A sucker rod wax scraping device

Abstract

The present application relates to the technical field of sucker rod cleaning, and discloses a sucker rod wax scraping device, which comprises a shell, is used for being connected with a wellhead oil pipe, and a sucker rod is moved on the axis of the oil pipe and the shell; a righting assembly is movably installed on the shell and is circumferentially provided with a plurality of groups; a wax scraping assembly is further correspondingly arranged on the top of the shell of the righting assembly; the sucker rod is movably contacted with the righting assembly and the wax scraping assembly in sequence; and a wax collecting assembly comprises a collecting piece and a material distributing piece, the collecting piece is arranged at the bottom opening of the shell, and the material distributing piece is fixed at both ends with the righting assembly and the collecting piece. The present application solves the problems of unsatisfactory wax cleaning effect of the existing sucker rod cleaning device and inconvenient collection of waste wax.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sucker rod cleaning, in particular to a sucker rod wax scraping device. BACKGROUND

[0002] In the process of oilfield exploitation, the sucker rod wax cleaning operation is the core link to ensure the stable operation of downhole equipment and maintain efficient oil production. Timely removal of oil and wax on the surface of the sucker rod can effectively reduce the friction loss of the rod and pipe, prolong the service life of the equipment, and is crucial to improving the overall economic benefit of the oilfield.

[0003] At present, two kinds of sucker rod wax cleaning technologies widely used in domestic and foreign oilfields have significant defects. First, the steel wire or belt winding wax scraping method cannot pass through the winding structure due to the sucker rod centralizer, resulting in serious oil and wax residue, and high labor intensity and safety risk. Second, the wellhead rubber core wax scraper cannot continuously complete the wax scraping operation after being extruded by the large-diameter coupling or centralizer due to rapid decay of elasticity. More importantly, the above two methods do not have an effective waste wax collection device, and the waste wax is randomly scattered during the operation, not only polluting the operation site environment, but also increasing the subsequent cleaning cost, and because the waste wax cannot be collected and treated, resources are wasted. In addition, due to incomplete wax cleaning, it is often necessary to use a boiler truck to steam the wax for a second time, further increasing energy consumption and generating waste oil and water, and significantly increasing the comprehensive cost of oilfield workover operations. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is that the existing sucker rod cleaning device has unsatisfactory wax cleaning effect and waste wax is not easy to collect.

[0005] The above technical problems are solved by the following technical solutions: the present application provides a sucker rod wax scraping device, which comprises a shell for connecting with the wellhead tubing, and a sucker rod moving on the axis of the tubing and the shell; a centralizing assembly movably installed on the shell and circumferentially provided with a plurality of groups, and a wax scraping assembly corresponding to the top of the centralizing assembly and provided on the shell; the sucker rod is in movable contact with the centralizing assembly and the wax scraping assembly in sequence; a wax collecting assembly comprising a collecting member and a material uniformizing member, the collecting member being provided at the opening at the bottom of the shell, and the material uniformizing member being fixed at both ends with the centralizing assembly and the collecting member.

[0006] In a preferred embodiment of the oil pumping rod wax scraping device: the righting assembly comprises an adjusting seat and a righting frame fixedly connected thereto, the adjusting seat comprises a bottom plate, a vertical beam and a sliding block, the sliding block is fixedly connected to one side of the bottom plate, the vertical beam is fixedly connected to the top of the bottom plate vertically, the side wall thereof is further fixedly connected to the sliding block, and the top of the vertical beam is further fixedly connected to a pressing plate; the bottom end of the righting frame is hingedly fixed to the top of the sliding block, an auxiliary wheel is rotatably connected to the side of the top of the righting frame away from the vertical beam, and a rotating groove is further formed in the side of the top of the righting frame close to the vertical beam; an internal fastener is rotatably connected in the rotating groove, the internal fastener comprises a circular seat, the circular seat is rotatable in the rotating groove, an abutting groove is formed in the side wall of the circular seat, and a first spring is fixedly connected between the pressing plate and the abutting groove.

[0007] In a preferred embodiment of the oil pumping rod wax scraping device: the wax scraping assembly comprises a base piece and an auxiliary piece connected to the top of the base piece, the base piece comprises a cross beam and a transversal plate and a first scraping plate fixedly connected to the two ends of the cross beam; second springs are fixedly connected to the two ends of the side of the transversal plate close to the cross beam in a symmetrical manner, a stabilizing block is fixedly connected to the bottom of the end of the cross beam close to the first scraping plate, and a first inclined surface is further formed in the end of the cross beam.

[0008] In a preferred embodiment of the oil pumping rod wax scraping device: a first arc-shaped toothed scraping plate is fixedly connected to the top of the end of the first scraping plate away from the cross beam, vertical plates are further fixedly connected to the two sides of the first arc-shaped toothed scraping plate in a symmetrical manner, an installation plate is further fixedly connected to the end of the vertical plate away from the first arc-shaped toothed scraping plate, and a third spring is fixedly connected to the inner wall of the installation plate; a sliding hole is further formed in the vertical plate.

[0009] In a preferred embodiment of the oil pumping rod wax scraping device: the auxiliary piece comprises a second scraping plate and a second arc-shaped toothed scraping plate fixedly connected to the top of the second scraping plate, and a butt joint clamping block is fixedly connected to the bottom of the second scraping plate; the inner diameter of the inner ring of the first arc-shaped toothed scraping plate is smaller than the inner diameter of the inner ring of the second arc-shaped toothed scraping plate, and a second inclined surface is formed in the bottom of the second arc-shaped toothed scraping plate; the butt joint clamping block comprises a plug-in sliding block and a base connected to the two ends of the plug-in sliding block, and the plug-in sliding block can be slidably plugged into the sliding hole.

[0010] In a preferred embodiment of the oil pumping rod wax scraping device: a centering sliding slot is symmetrically formed in the butt joint clamping block, a partition plate is fixedly arranged between the centering sliding slots, and a sliding rod is fixedly connected to the centering sliding slots in a symmetrical manner along the length direction thereof; a centering block is further slidably arranged in the centering sliding slot, the centering block is slidably sleeved on the sliding rod, a fourth spring is fixedly connected between the partition plate and the centering block, and the fourth spring is sleeved on the sliding rod; the side of the centering block away from the second arc-shaped toothed scraping plate is fixedly connected to the third spring.

[0011] In the preferred embodiment of the wax scraping device for sucker rod, the collecting member comprises a supporting plate, a central cylinder and a plurality of fan-shaped plates, the supporting plate is provided with a hole in the middle, the central cylinder is coaxially fixedly connected to the middle of the top end of the supporting plate, the fan-shaped plates are fixedly connected to the top edge of the supporting plate in a circumferentially equidistant and vertical manner, and the fan-shaped plates are arranged to form a discharging gap therebetween; a plurality of groups of sliding sleeves are fixedly connected to the top of the supporting plate at positions corresponding to the discharging gap, and the sliding sleeves are provided with limiting sliding channels; the material uniformizing member comprises a floating member and a control member, the floating member comprises a plug rod and a cross plug plate fixedly connected to the top end of the plug rod, the cross plug plate is fixedly connected to two symmetrical toggle plates at both ends, the plug rod is slidingly inserted into the sliding sleeve, a fifth spring is fixedly connected between the plug rod and the supporting plate, and the cross plug plate is slidingly inserted into the limiting sliding channel.

[0012] In the preferred embodiment of the wax scraping device for sucker rod, the control member is slidingly sleeved outside the sliding sleeve, and comprises an outer sleeve and connecting seats and sealing rings fixedly connected to both ends of the outer sleeve, the outer sleeve is provided with an outward sliding channel, the cross plug plate is slidingly arranged in the outward sliding channel, the connecting seat is provided with a through hole, the sliding sleeve can pass through the through hole, and the sealing ring is in contact connection with the bottom of the cross plug plate; the connecting seat is rotatably connected to a hinge rod, and the other end of the hinge rod is rotatably connected to the central cylinder.

[0013] In the preferred embodiment of the wax scraping device for sucker rod, the shell comprises a main shell and first and second connecting discs fixedly connected to the top and bottom of the main shell, the main shell is open at both ends, the inner wall of the bottom end of the main shell is fixedly connected to a boss, and a sixth spring is fixedly connected between the supporting plate and the boss; the outer wall of the main shell is further fixedly sleeved with an outer connecting ring, a plurality of groups of blowdown holes are further formed in the main shell between the outer connecting ring and the second connecting disc, the positions of the blowdown holes correspond to the discharging gap, and the outer wall of the main shell at the bottom of the blowdown hole is further fixedly sleeved with a dirt collecting disc; the top of the outer connecting ring is further rotatably inserted with an adjusting screw rod, and the adjusting screw rod is threadedly inserted into the bottom plate.

[0014] In the preferred embodiment of the wax scraping device for sucker rod, the outer wall of the main shell at the top of the outer connecting ring is circumferentially fixedly provided with a plurality of groups of mounting convex strips, the mounting convex strips are provided with adjusting sliding grooves, the side groove walls of the adjusting sliding grooves are provided with pressing holes and height adjusting holes, a sliding block is slidingly clamped in the adjusting sliding groove, a seventh spring is further fixedly connected between the sliding block and the groove wall at the bottom of the adjusting sliding groove, and the first spring passes through the pressing hole; the top of the pressing hole is further fixedly connected with a sliding rail plate, and the stabilizing block is slidingly inserted into the sliding rail plate; the outer wall of the first connecting disc is fixedly connected with a plurality of groups of spring seats, the cross beam is slidingly arranged to pass through the spring seats and the main shell, and the second spring is fixedly connected with the spring seat.

[0015] The beneficial effects of the present application are as follows:

[0016] The oil pumping rod is stably lifted by the righting assembly, collision with the oil pipe wall is avoided, and the wax scraping assembly can scrape off the oil and wax attached to the outer wall of the oil pumping rod during lifting, in the application, the wax scraping assembly comprises a base piece and an auxiliary piece, the base piece is a main wax scraping component, when the pipe diameter of the oil pumping rod to be cleaned becomes thick, the auxiliary piece works with the base piece to avoid cleaning dead angles on the outer wall of the oil pumping rod.

[0017] The oil pumping rod is long-term worked in the well and is easily deformed or worn by various forces. When the oil pumping rod is bent and deformed, if the righting assembly is clamped at the original height, the oil pumping rod cannot be kept in a straight line to pass through the wax scraping assembly, which affects the wax scraping effect and may damage the wax scraping assembly, at this time, the height of the righting assembly needs to be adjusted according to the bending degree to ensure that the oil pumping rod can be effectively righted. In addition, after the oil pumping rod is worn, the diameter becomes small, the original clamping height of the righting assembly will cause the gap to be too large, the righting effect is reduced, and the height of the righting assembly should be reduced to make the righting assembly closely adhere to the oil pumping rod again to ensure that the oil pumping rod is stable during wax scraping

[0018] During the oil and wax cleaning process, the collecting piece collects the oil and wax falling from the upper part, and with the height adjustment of the righting assembly or the change of the clamping angle of the righting assembly, the material uniformizing piece can level the oil and wax in the collecting piece to ensure that more oil and wax can be stored in the collecting piece. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, but not limit the present application. Among them:

[0020] Figure 1 A sectional view of the oil pumping rod wax scraping device is shown;

[0021] Figure 2 A connection diagram of the righting assembly and the wax collecting assembly of the oil pumping rod wax scraping device is shown;

[0022] Figure 3 A structure diagram of the righting assembly of the oil pumping rod wax scraping device is shown;

[0023] Figure 4 A structure diagram of the base piece of the oil pumping rod wax scraping device is shown;

[0024] Figure 5 A connection diagram of the base piece and the auxiliary piece of the oil pumping rod wax scraping device is shown;

[0025] Figure 6 A partial structure diagram of the auxiliary piece of the oil pumping rod wax scraping device is shown;

[0026] Figure 7 A sectional view of the auxiliary piece of the oil pumping rod wax scraping device is shown;

[0027] Figure 8 A first arc-shaped tooth scraper and a second arc-shaped tooth scraper of the sucker rod wax scraping device are shown in the connection diagram;

[0028] Figure 9 A first arc-shaped tooth scraper and a second arc-shaped tooth scraper of the sucker rod wax scraping device are shown in the inner diameter change diagram;

[0029] Figure 10 A wax collecting assembly structure of the sucker rod wax scraping device is shown in the diagram;

[0030] Figure 11 A wax collecting assembly structure of the sucker rod wax scraping device is shown in the diagram;

[0031] Figure 12 A wax collecting assembly structure of the sucker rod wax scraping device is shown in the diagram. DETAILED DESCRIPTION

[0032] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0033] The terms used in the present application are those general terms currently widely used in the art in consideration of the functions regarding the present application, but the terms can be changed according to the intention of those skilled in the art, precedents, or new technology in the art. In addition, specific terms can be selected by the applicant, and in this case, the detailed meaning thereof will be described in the detailed description of the present application. Therefore, the terms used in the specification should not be understood as mere names, but based on the meaning of the terms and the overall description of the present application.

[0034] REFERENCE Figures 1-12 The present embodiment provides a sucker rod A wax scraping device, which comprises a shell 100 for connecting with a wellhead pipe, and a sucker rod A is moved on the axis of the pipe and the shell 100.

[0035] The shell 100 is preferably a tubular hollow structure, and the material thereof is Q235 carbon steel. The shell 100 supports and protects the mechanism of the device. The top of the shell 100 is connected with a pumping unit lifting system. The pumping unit is the core power equipment for lifting the sucker rod A, and its lifting system includes a motor, a speed reducer, a crank connecting rod mechanism, and a steel wire rope and other components. The motor drives the speed reducer to make the crank connecting rod mechanism operate, drive the steel wire rope to move up and down, and then pull the sucker rod A to move on the axis of the shell 100.

[0036] The centralizer assembly 200 is movably installed on the shell 100, and a plurality of groups are circumferentially arranged. The shell 100 at the top of the centralizer assembly 200 is also provided with a wax scraping assembly 300 corresponding thereto. The sucker rod A is movably contacted with the centralizer assembly 200 and the wax scraping assembly 300 in sequence.

[0037] In the embodiment, the righting assembly 200 is preferably provided with three groups, each group of righting assembly 200 is equal in distance, arranged in the shape of a triangular clamp jaw, and the wax scraping assembly 300 is also correspondingly provided with three groups, located directly above the righting assembly 200, and the sucker rod A is located on the clamping center of the righting assembly 200 and the wax scraping assembly 300.

[0038] The wax collecting assembly 400 includes a collecting piece 401 and a uniforming piece 402, the collecting piece 401 is arranged at the opening at the bottom of the shell 100, and the uniforming piece 402 is fixed at both ends with the righting assembly 200 and the collecting piece 401.

[0039] The collecting piece 401 functions to receive the liquid or solid oil wax falling from above, the uniforming piece 402 is controlled by the righting assembly 200, the righting assembly 200 can drive the uniforming piece 402 to float up and down, when the solid oil wax is cleaned and falls by the wax scraping assembly 300, it will not be neatly connected in the collecting piece 401, at this time, the uniforming piece 402 floating up and down can gradually smooth the oil wax, and improve the effective utilization rate of the collecting piece 401.

[0040] As an optional embodiment, the righting assembly 200 includes an adjusting seat 201 and a righting frame 202 fixedly connected therewith, the adjusting seat 201 includes a bottom plate 201a, a vertical beam 201b and a sliding block 201c, the sliding block 201c is fixedly connected on one side of the bottom plate 201a, the vertical beam 201b is fixedly connected perpendicularly on the top of the bottom plate 201a, the side wall thereof is further fixedly connected with the sliding block 201c, and the top of the vertical beam 201b is further fixedly connected with a pressing plate 201d.

[0041] Among them, the bottom plate 201a and the vertical beam 201b are located outside the shell 100, the vertical beam 201b is close to the outer wall of the shell 100, the sliding block 201c is embedded in the inner cavity of the shell 100 and moves up and down in the shell 100, the bottom plate 201a, the vertical beam 201b and the sliding block 201c form a T-shaped structure, the bottom plate 201a and the sliding block 201c are horizontal ends of the T-shaped structure, and the vertical beam 201b is a vertical end, which holds the pressing plate 201d high.

[0042] The bottom end of the righting frame 202 is hingedly fixed with the top of the sliding block 201c through a bolt, the top of the righting frame 202 is rotatably connected with an auxiliary wheel 202a on the side away from the vertical beam 201b, the auxiliary wheel 202a is made of alloy steel as a whole, a rubber pad is fixed on the wheel surface of the auxiliary wheel 202a to increase the friction between the auxiliary wheel 202a and the central sucker rod A, and a rotating groove 202b is further formed on the side of the top of the righting frame 202 close to the vertical beam 201b, the rotating groove 202b is a semicircular groove.

[0043] The inner built-in fastener 202c is rotatably connected in the rotating groove 202b, and the inner built-in fastener 202c comprises a circular ring seat 202c-1 which is rotatably matched in the rotating groove 202b, and the side wall of the circular ring seat 202c-1 is provided with an abutting groove 202c-2, and the first spring T1 is fixedly connected between the pressing plate 201d and the abutting groove 202c-2.

[0044] Preferably, the circular ring seat 202c-1 adopts a cylindrical structure, and the two ends of the circular ring seat 202c-1 are rotatably inserted into the two ends of the rotating groove 202b.

[0045] The wax scraping assembly 300 comprises a base piece 301 and an auxiliary piece 302 connected to the top of the base piece 301, the base piece 301 comprises a cross beam 301a and a transverse plate 301b and a first scraping plate 301c fixedly connected at the two ends of the cross beam 301a, and the first scraping plate 301c preferably adopts a fan-shaped plate structure.

[0046] The second spring T2 is fixedly connected to the two ends of the side of the transverse plate 301b close to the cross beam 301a in a symmetrical manner, the stable block 301a-1 is fixedly connected to the bottom of the end of the cross beam 301a close to the first scraping plate 301c, and the first inclined surface X1 is further formed at the end of the cross beam 301a.

[0047] The first arc-shaped tooth scraping plate 301c-1 is fixedly connected to the top of the end of the first scraping plate 301c away from the cross beam 301a, the vertical plates 301c-2 are fixedly connected to the two sides of the first arc-shaped tooth scraping plate 301c-1 in a symmetrical manner, the mounting plate 301c-3 is fixedly connected to the end of the vertical plate 301c-2 away from the first arc-shaped tooth scraping plate 301c-1, and the third spring T3 is fixedly connected to the inner wall of the mounting plate 301c-3; the sliding hole 301c-2a is further formed in the vertical plate 301c-2.

[0048] Referring to Figure 5 Preferably, the three groups of first scraping plates 301c are in close contact with each other to form a complete circular ring, the arc-shaped groove is formed at the position close to the circular shape of the first scraping plate 301c, the diameter of the oil extraction rod A is commonly 16mm, 19mm, 22mm, 25mm, etc., the inner diameter of the arc-shaped groove and the first arc-shaped tooth scraping plate 301c-1 in the embodiment is preferably 16mm, which is convenient for close contact with the outer wall of the oil extraction rod A and scraping off the oil wax.

[0049] The auxiliary piece 302 comprises a second scraping plate 302a and a second arc-shaped tooth scraping plate 302b fixed to the top of the second scraping plate 302a, and the butt joint clamping block 302c is fixedly connected to the bottom of the second scraping plate 302a.

[0050] The inner diameter of the inner ring of the first arc-shaped tooth scraper 301c-1 is smaller than the inner diameter of the inner ring of the second arc-shaped tooth scraper 302b, the second arc-shaped tooth scraper 302b is provided with a second inclined surface X2 at the bottom, the size of the second scraper 302a is smaller than that of the first scraper 301c, and the inner diameter of the second arc-shaped tooth scraper 302b is preferably 22 mm. When the diameter of the sucker rod A is 16 mm or 19 mm, wax removal is performed through the first arc-shaped tooth scraper 301c-1, and when the diameter of the sucker rod A is 22 mm or 25 mm, wax removal is performed through the second arc-shaped tooth scraper 302b.

[0051] It should be noted that when the diameter of the sucker rod A is slightly larger than the inner diameter of the arc-shaped scraper of the first arc-shaped tooth scraper 301c-1 or the second arc-shaped tooth scraper 302b, a small gap will be formed between the first arc-shaped tooth scraper 301c-1, but the small gap is smaller than the overall area of the outer wall of the sucker rod A, and does not affect the overall wax scraping effect.

[0052] The docking block 302c includes a plug-in sliding block 302c-1 and a base 302c-2 connected at both ends, the plug-in sliding block 302c-1 can be slidably inserted into the sliding hole 301c-2a, and there is a gap between the plug-in sliding block 302c-1 and the second scraper 302a, which facilitates the passage of the plate wall of the upper edge of the sliding hole 301c-2a.

[0053] The docking block 302c is symmetrically provided with a center sliding slot 302c-3, the center sliding slot 302c-3 is fixed with a partition plate 302c-3a, and the center sliding slot 302c-3 is fixedly connected with a sliding rod 302c-3b along the length direction.

[0054] The center sliding slot 302c-3 is also slidably provided with a center block 302c-4, the center block 302c-4 is slidably sleeved on the sliding rod 302c-3b, the partition plate 302c-3a and the center block 302c-4 are fixedly connected with a fourth spring T4, and the fourth spring T4 is sleeved on the sliding rod 302c-3b.

[0055] The side of the center block 302c-4 away from the second arc-shaped tooth scraper 302b is fixedly connected with the third spring T3.

[0056] During use, when the diameter of the sucker rod A increases, the three groups of first scrapers 301c move outward synchronously, the third spring T3 pushes the center block 302c-4, thereby maintaining the sliding of the docking block 302c in the sliding hole 301c-2a, and achieving the purpose of maintaining the three groups of second scrapers 302a.

[0057] Further, in the process of moving the first scraper 301c, the gap between the two adjacent groups of first scrapers 301c becomes larger, at this time, in order to maintain the stability of the second scraper 302a, the centering block 302c-4 will move synchronously in the centering sliding groove 302c-3, the distance between the centering blocks 302c-4 will increase, ensuring that the third spring T3 always vertically pushes the butt joint block 302c, ensuring that the second scraper 302a is located in the middle position of the gap between the first scrapers 301c.

[0058] Further, in the process of lifting the sucker rod A, the connector at the connection between the two interconnected sucker rods A has an outer diameter larger than the sucker rod A itself, which needs to be ensured to pass through the circular scraping area formed by the first arc-shaped tooth scraper 301c-1 and the second arc-shaped tooth scraper 302b, in this process, the connector will be extruded by sliding contact with the first slope X1 and the second slope X2, pushing the first arc-shaped tooth scraper 301c-1 and the second arc-shaped tooth scraper 302b to expand outward, until the connector passes through, after the connector passes through, the first arc-shaped tooth scraper 301c-1 and the second arc-shaped tooth scraper 302b will quickly reset under the action of the spring, clamping the outer wall of the sucker rod A, and continuing to scrape off the oil wax.

[0059] The collecting piece 401 includes a supporting plate 401a, a center cylinder 401b, and a fan-shaped plate 401c, the supporting plate 401a has a hole in the middle, the center cylinder 401b is coaxially fixedly connected to the top middle part of the supporting plate 401a, and the fan-shaped plates 401c are fixedly connected to the top edge of the supporting plate 401a in a circumferential equidistant and vertical manner, and the discharge gaps B are formed between the fan-shaped plates 401c.

[0060] In use, even though the discharge gaps B are formed between the fan-shaped plates 401c, the discharge gaps B are filled by the inner wall of the shell 100, forming a barrel-shaped storage space.

[0061] A plurality of groups of sliding sleeves 401a-1 are fixedly connected to the top of the supporting plate 401a at positions corresponding to the discharge gaps B, and a limiting sliding channel 401a-1a is formed in each sliding sleeve 401a-1.

[0062] The material uniformizing piece 402 includes a floating piece 402a and a control piece 402b, the floating piece 402a includes a plug rod 402a-1 and a transverse plug plate 402a-2 fixedly connected to the top end of the plug rod 402a-1, the transverse plug plate 402a-2 is fixedly connected with a toggle plate 402a-3 at both ends in a symmetrical manner, the plug rod 402a-1 is slidingly inserted into the sliding sleeve 401a-1, and the fifth spring T5 is fixedly connected between the plug rod 402a-1 and the supporting plate 401a, and the transverse plug plate 402a-2 is slidingly inserted into the limiting sliding channel 401a-1a.

[0063] The control member 402b is sleeved on the sliding sleeve 401a-1, which comprises an outer sleeve 402b-1 and connecting seats 402b-2 and a sealing ring 402b-3 fixed at both ends of the outer sleeve 402b-1, the outer sleeve 402b-1 is provided with an outward sliding channel 402b-1a, the cross plate 402a-2 slides in the outward sliding channel 402b-1a, the connecting seat 402b-2 is provided with a through hole 402b-2a, the sliding sleeve 401a-1 can pass through the through hole 402b-2a, and the top of the sealing ring 402b-3 is in contact with the bottom of the cross plate 402a-2.

[0064] The connecting seat 402b-2 is rotationally connected with a hinge rod 402b-4, and the other end of the hinge rod 402b-4 is rotationally connected with the centralizer 202.

[0065] The shell 100 comprises a main shell 101 and first and second connecting discs 101a and 101b fixed at the top and bottom of the main shell 101, the main shell 101 is open at both ends, the inner wall of the bottom end of the main shell 101 is fixedly connected with a boss 101c, and the sixth spring T6 is fixedly connected between the cross plate 401a and the boss 101c.

[0066] It should be explained that when the centralizer assembly 200 is in the highest position and the collecting member 401 is in the idle state, the fifth spring T5 lifts the floating member 402a, at this time, the upper end surface of the cross plate 402a-2 is pressed against the top inner wall of the outward sliding channel 402b-1a.

[0067] In use, when the collecting member 401 is in the idle state, its weight is light, and the sixth spring T6 lifts the collecting member 401 upward, after the oil wax is scraped off, gradually falls on the cross plate 401a, the weight gradually increases, and the cross plate 401a slowly descends, in the descending process, the cross plate 401a will pull down the toggle plate 402a-3 on the floating member 402a through the fifth spring T5, the toggle plate 402a-3 will press the internal solid oil wax downward or agitate the mixed oil wax, and the internal space is leveled, when the oil wax in the collecting member 401 is removed, the collecting member 401 is lifted again.

[0068] Further, when it is necessary to change the clamping height of the centralizer assembly 200, the adjusting seat 201 drives the centralizer 202 to move up and down, in this process, the toggle plate 402a-3 also levels the internal oil wax.

[0069] In summary, the floating member 402a is lifted by the fifth spring T5 without force, the control member 402b is directly fixed with the centralizer 202 through the hinge rod 402b-4, when the height or clamping angle of the centralizer 202 changes and downward pressure is given to the control member 402b, the control member 402b will push the floating member 402a to move downward to agitate and level the oil wax.

[0070] The outer wall of the main shell 101 is also fixedly sleeved with an outer connecting ring 101d. A plurality of groups of blow-off holes 101e are formed in the main shell 101 between the outer connecting ring 101d and the second connecting disc 101b, and the blow-off holes 101e are located in correspondence with the discharge gap B.

[0071] The outer wall of the main shell 101 at the bottom of the blow-off hole 101e is also fixedly sleeved with a blow-off disc 101e-1. When the collecting member 401 is full of oil wax, the supporting plate 401a moves downward, the discharge gap B moves to a height corresponding to the blow-off hole 101e, and the staff pushes the oil wax of the collecting member 401 out through the dredging rod.

[0072] The outer connecting ring 101d is also rotatably inserted with an adjusting screw 101d-1 at the top. The adjusting screw 101d-1 is threadedly inserted into the bottom plate 201a. By rotating the adjusting screw 101d-1, the bottom plate 201a connected therewith can be raised or lowered.

[0073] The outer connecting ring 101d is also fixedly sleeved with a plurality of groups of mounting convex strips 101f on the main shell 101 at the top. The mounting convex strips 101f are internally provided with adjusting sliding grooves 101f-1. The side groove walls of the adjusting sliding grooves 101f-1 are provided with pressing holes 101f-1a and height-adjusting holes 101f-1b. A sliding block 201c is slidingly connected in the adjusting sliding groove 101f-1. A seventh spring T7 is fixedly connected between the sliding block 201c and the bottom groove wall of the adjusting sliding groove 101f-1. A first spring T1 passes through the pressing hole 101f-1a.

[0074] When the height of the righting assembly 200 is adjusted, the sliding block 201c slides up and down in the adjusting sliding groove 101f-1. The seventh spring T7 can maintain the balance of the righting assembly 200. In the process of height adjustment, the second spring T2 slides in the height-adjusting hole 101f-1b.

[0075] The top of the pressing hole 101f-1a is also fixedly connected with a sliding rail plate 101f-2. A stabilizing block 301a-1 is slidingly inserted into the sliding rail plate 101f-2. The sliding rail plate 101f-2 provides stable support for the cross beam 301a in the base member 301.

[0076] The outer wall of the first connecting disc 101a is fixedly connected with a plurality of groups of spring seats 101a-1. The cross beam 301a slides through the spring seat 101a-1 and the main shell 101. The second spring T2 is fixedly connected with the spring seat 101a-1. The pressing plate 201d applies pressure to the auxiliary wheel 202a through the second spring T2, so that the auxiliary wheel 202a synchronously clamps the middle oil rod A.

[0077] Finally, it should be noted that the above detailed description of the method and device is only an embodiment, and those skilled in the art can modify the embodiment in different ways without departing from the scope of the present application.

Claims

1. A sucker rod wax scraping device, characterized in that: include, The housing (100) is used to connect to the wellhead tubing, and the sucker rod (A) moves along the axis of the tubing and the housing (100); The straightening component (200) is movably mounted on the housing (100) and has several sets arranged circumferentially. The housing (100) at the top of the straightening component (200) is also provided with a wax scraping component (300). The sucker rod (A) is in movable contact with the straightening component (200) and the wax scraping component (300) in sequence. The wax scraping assembly (300) includes a base component (301) and an auxiliary component (302) connected to its top. The base component (301) includes a crossbeam (301a) and a cross plate (301b) fixedly connected to its two ends and a first scraper (301c). The auxiliary component (302) includes a second scraper (302a) and a second arc-shaped toothed scraper (302b) fixedly connected to its top. A docking block (302c) is fixedly connected to the bottom of the second scraper (302a). The wax collection assembly (400) includes a collecting component (401) and a uniform component (402). The collecting component (401) is disposed at the bottom opening of the outer shell (100), and the two ends of the uniform component (402) are fixed to the straightening assembly (200) and the collecting component (401) respectively. The collecting component (401) includes a tray (401a), a central cylinder (401b), and a fan-shaped plate (401c). The tray (401a) has an opening in the middle. The central cylinder (401b) is coaxially fixedly connected to the middle of the top of the tray (401a). The fan-shaped plates (401c) are circumferentially and vertically fixedly connected to the top edge of the tray (401a). A discharge gap (B) is formed between the fan-shaped plates (401c). The material leveling component (402) includes a floating component (402a) and a control component (402b). The control component (402b) is slidably sleeved on the outside of the sliding sleeve (401a-1). It includes an outer sleeve (402b-1) and connecting seats (402b-2) and sealing rings (402b-3) fixed at both ends. The straightening assembly (200) includes an adjusting seat (201) and a straightening frame (202) fixedly connected thereto. The adjusting seat (201) includes a base plate (201a), a vertical beam (201b), and a sliding block (201c). The sliding block (201c) is fixedly connected to one side of the base plate (201a). The vertical beam (201b) is vertically fixedly connected to the top of the base plate (201a), and its sidewall is also fixedly connected to the sliding block (201c). A pressure plate (201d) is also fixedly connected to the top of the vertical beam (201b). The bottom end of the straightening frame (202) is hinged to the top of the sliding block (201c). An auxiliary wheel (202a) is rotatably connected to the side of the top of the straightening frame (202) away from the vertical beam (201b). A rotating groove (202b) is also provided on the side of the top of the straightening frame (202) close to the vertical beam (201b). An internal fastener (202c) is rotatably connected within the rotating groove (202b). The internal fastener (202c) includes a circular seat (202c-1), which rotates within the rotating groove (202b). An abutment groove (202c-2) is provided on the side wall of the circular seat (202c-1). A first spring (T1) is fixedly connected between the pressure plate (201d) and the abutment groove (202c-2). A number of sliding sleeves (401a-1) are fixedly connected to the top of the tray (401a) at the position corresponding to the discharge gap (B), and a limit slide (401a-1a) is provided on the sliding sleeve (401a-1). The floating component (402a) includes a rod (402a-1) and a horizontal plate (402a-2) fixedly connected to its top end. The horizontal plate (402a-2) has a lever plate (402a-3) symmetrically fixedly connected to both ends. The rod (402a-1) is slidably inserted into the sliding sleeve (401a-1) and a fifth spring (T5) is fixedly connected between it and the support plate (401a). The horizontal plate (402a-2) is slidably inserted into the limiting slide (401a-1a). The outer sleeve (402b-1) is provided with an extension slide (402b-1a), the horizontal insert plate (402a-2) slides in the extension slide (402b-1a), the connecting seat (402b-2) is provided with a through hole (402b-2a), the sliding sleeve (401a-1) can fit through the through hole (402b-2a), and the top of the sealing ring (402b-3) is in contact with the bottom of the horizontal insert plate (402a-2). A hinge rod (402b-4) is rotatably connected to the connecting seat (402b-2), and the other end of the hinge rod (402b-4) is rotatably connected to the straightening frame (202).

2. The sucker rod wax scraping device according to claim 1, characterized in that: The two ends of the cross plate (301b) near the cross beam (301a) are symmetrically fixed with second springs (T2), and the bottom of the cross beam (301a) near the first scraper (301c) is fixed with a stabilizing block (301a-1), and the end of the cross beam (301a) at this end is also provided with a first inclined surface (X1).

3. The sucker rod wax scraping device according to claim 2, characterized in that: The top of the first scraper (301c) away from the crossbeam (301a) is fixedly connected to a first arc-shaped toothed scraper (301c-1). Vertical plates (301c-2) are also fixedly connected symmetrically on both sides of the first arc-shaped toothed scraper (301c-1). The end of the vertical plate (301c-2) away from the first arc-shaped toothed scraper (301c-1) is also fixedly connected to a mounting plate (301c-3). A third spring (T3) is fixedly connected to the inner wall of the mounting plate (301c-3). The upright plate (301c-2) is also provided with a sliding hole (301c-2a).

4. The sucker rod wax scraping device according to claim 3, characterized in that: The inner diameter of the inner ring of the first arc-shaped toothed scraper (301c-1) is smaller than the inner diameter of the inner ring of the second arc-shaped toothed scraper (302b), and the bottom of the second arc-shaped toothed scraper (302b) is provided with a second inclined surface (X2). The docking block (302c) includes a plug-in slider (302c-1) and a base (302c-2) connected to its two ends. The plug-in slider (302c-1) can be slidably inserted into the sliding hole (301c-2a).

5. The sucker rod wax scraping device according to claim 4, characterized in that: The docking block (302c) is symmetrically provided with a central sliding joint (302c-3), and a partition plate (302c-3a) is fixed between the central sliding joints (302c-3). A sliding rod (302c-3b) is symmetrically fixedly connected within the central sliding joint (302c-3) along its length direction. A centering block (302c-4) is also slidably disposed inside the centering sliding joint (302c-3). The centering block (302c-4) is slidably sleeved on the outside of the sliding rod (302c-3b). A fourth spring (T4) is fixedly connected between the partition plate (302c-3a) and the centering block (302c-4). The fourth spring (T4) is sleeved on the outside of the sliding rod (302c-3b). The side of the centering block (302c-4) away from the second arc-shaped toothed scraper (302b) is fixedly connected to the third spring (T3).

6. The sucker rod wax scraping device according to any one of claims 2 to 5, characterized in that: The outer casing (100) includes a main casing (101) and a first connecting plate (101a) and a second connecting plate (101b) fixed at its top and bottom. The main casing (101) has openings at both ends. A boss (101c) is fixedly connected to the inner wall of the bottom end of the main casing (101). A sixth spring (T6) is fixedly connected between the support plate (401a) and the boss (101c). The outer wall of the main housing (101) is also fixedly fitted with an outer ring (101d). The main housing (101) between the outer ring (101d) and the second connecting plate (101b) is also provided with a number of drain holes (101e). The position of the drain holes (101e) corresponds to the discharge gap (B). A sludge receiving tray (101e-1) is also fixedly sleeved on the outer wall of the main housing (101) located at the bottom of the drain hole (101e). An adjusting screw (101d-1) is rotatably inserted into the top of the outer ring (101d), and the adjusting screw (101d-1) is threaded into the bottom plate (201a).

7. The sucker rod wax scraping device according to claim 6, characterized in that: The main housing (101) at the top of the outer ring (101d) is circumferentially fixed with several sets of mounting protrusions (101f). An adjustment groove (101f-1) is provided in the mounting protrusion (101f). The side wall of the adjustment groove (101f-1) is provided with a pressure hole (101f-1a) and a height adjustment hole (101f-1b). The sliding block (201c) is slidably engaged in the adjustment groove (101f-1). A seventh spring (T7) is also fixedly connected between the sliding block (201c) and the bottom wall of the adjustment groove (101f-1). The first spring (T1) passes through the pressure hole (101f-1a). The top of the pressure hole (101f-1a) is also fixedly connected to a slide rail plate (101f-2), and the stabilizing block (301a-1) is slidably inserted into the slide rail plate (101f-2); The outer wall of the first connecting plate (101a) is fixedly connected with several sets of spring seats (101a-1), the crossbeam (301a) slides through the spring seats (101a-1) and the main housing (101), and the second spring (T2) is fixedly connected to the spring seats (101a-1).

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