阅读说明：本技术 一种旋转刮蜡扶正器 (Rotatory wax centralizer of scraping ) 是由 陆华飞 李荣明 孙昌平 李晓彬 于 2019-10-30 设计创作，主要内容包括：本发明涉及一种旋转刮蜡扶正器,包括一螺杆；一接箍；一换向齿组,换向齿组套设在螺杆上,换向齿组包括第一换向齿、第二换向齿；一尼龙玻纤扶正体,尼龙玻纤扶正体包括套设在在螺杆上的套体以及分别置于套体两侧的锯齿b,套体两侧的锯齿b分别与第一换向齿、第二换向齿上的锯齿a相互配合,套体与两侧的锯齿b为一体式成型结构且套体与两侧的锯齿b齐平设置,套体的外壁上设有多个等间距设置的凸条,凸条的高度由一侧锯齿b向另一侧锯齿b逐步递增,相邻两个凸条的高度延伸方向呈错开设置,凸条的延伸方向随着套体的转动方向设置。本发明具有,保证结构强度、提高刮蜡效果、防止偏磨的优点。(The invention relates to a rotary wax scraping centralizer, which comprises a screw rod; a coupling; the reversing tooth group is sleeved on the screw rod and comprises a first reversing tooth and a second reversing tooth; the utility model provides a nylon glass fiber body of righting, nylon glass fiber body of righting establishes the cover body on the screw rod and arranges the sawtooth b of set body both sides in respectively including the cover, the sawtooth b of set body both sides respectively with first switching-over tooth, sawtooth a on the second switching-over tooth mutually supports, the cover body flushes the setting with the sawtooth b formula molding structure as an organic whole of both sides and the sawtooth b of set body and both sides, be equipped with the sand grip that a plurality of equidistant settings on the outer wall of the cover body, the height of sand grip is progressively increased progressively by one side sawtooth b to opposite side sawtooth b, the high extending direction of two adjacent sand grips is the setting of staggering, the extending direction of sand grip sets up along. The invention has the advantages of ensuring the structural strength, improving the wax scraping effect and preventing eccentric wear.)

1. The utility model provides a rotatory wax centralizer of scraping which characterized in that: comprises that

A screw;

the coupling is arranged at one end of the screw and is fixedly connected with the screw;

the reversing tooth group is sleeved on the screw rod and comprises a first reversing tooth and a second reversing tooth, the first reversing tooth is fixedly connected with the coupling, the second reversing tooth is fixed with one end of the locking nut and is fixed on the screw rod through the locking nut, and saw teeth a of the first reversing tooth and the second reversing tooth are oppositely arranged;

the utility model provides a nylon glass fiber body of righting, nylon glass fiber body of righting establishes the cover body on the screw rod and arranges the sawtooth b of set body both sides in respectively including the cover, the sawtooth b of set body both sides mutually supports with sawtooth a on first switching-over tooth, the second switching-over tooth respectively, the cover body flushes the setting with the sawtooth b formula forming structure as an organic whole of both sides and the cover body sawtooth b of both sides, be equipped with the sand grip that a plurality of equidistant settings on the outer wall of the cover body, the height of sand grip progressively increases progressively by one side sawtooth b to opposite side sawtooth b, and the high extending direction of two adjacent sand grips is the setting of staggering, the extending direction of sand grip sets up along with the rotation direction of the cover.

2. The rotary paraffin scraping centralizer of claim 1, wherein: the sawteeth a and b are in straight sawteeth shape, and the tooth angle is 60 degrees.

3. The rotary paraffin scraping centralizer of claim 2, wherein: the specific manufacturing process of the nylon glass fiber centralizing body comprises the following specific steps:

A. selecting raw materials: selecting 60-70 parts by weight of nylon 6, 40-55 parts by weight of long glass fiber, 12-18 parts by weight of polypropylene, 3-8 parts by weight of silane coupling agent, 10-12 parts by weight of reinforcing filler and 1-3 parts by weight of heat stabilizer;

B. mixing raw materials: drying nylon at 85-95 ℃ for 7-8 hours, mixing the nylon and polypropylene, pouring the mixture into a mixing roll, charging nitrogen, starting the mixing roll at 230-240 ℃ for mixing for 50-60min to obtain a mixture a; after the pressure of the mixing roll is relieved, adding a silane coupling agent, a reinforcing filler and a heat stabilizer into the mixing roll to mix with the mixture a, then filling nitrogen, starting the mixing roll at the temperature of 230 ℃ and 240 ℃ to mix for 1-1.5h to obtain a mixture b;

C. adding the mixture b into a double-screw extruder for extrusion, adding long glass fiber into a glass fiber inlet of the double-screw extruder, melting, extruding, cooling and granulating at the screw rotating speed of 180-;

D. molding: and D, placing the nylon glass fiber material prepared in the step C into an injection molding machine for injection molding to prepare the nylon glass fiber centralizing body.

The technical field is as follows:

the invention belongs to the field of oil field mechanical oil extraction, and particularly relates to a rotary paraffin scraping centralizer.

Background art:

the centralizer belongs to sucker rod righting equipment, is connected with the one end of sucker rod, is applicable to the oil well of different grade type eccentric wear, and rotatory wax centralizer of scraping is along with the sucker rod about automatic, about rotatory rightly from top to bottom the sucker rod righting, because the spiral is right, the body of righting is surface contact with the sucker rod, area of contact is great, has prevented better with the eccentric wear of sucker rod, the specially adapted inclined shaft.

The existing centralizer is usually made of plastic materials, the centralizer autorotation is carried out under the action of the sucker rod, the resistance force borne by an oil well pump plunger during the down stroke moves downwards on the sucker rod, a rod column at the lower part of the sucker rod bears larger variable load, and the sucker rod is broken in an eccentric wear mode or even penetrates through an oil pipe due to the lower structural strength of the existing centralizer, so that the oil pipe is lost; but also the centralizing body rubs with the inner wall of the oil pipe to play a role in scraping wax, but the prior centralizing body has certain impact on the surface of the centralizing body under the action of oil flow, the surface abrasion is larger, the friction force is smaller and smaller, and therefore, the wax scraping effect of the inner wall of the oil pipe is poorer and poorer. Therefore, it is necessary to provide a rotary paraffin removal centralizer which ensures structural strength, improves paraffin removal effect and prevents eccentric wear.

The invention content is as follows:

the invention aims to overcome the defects and provide a rotary paraffin scraping centralizer, which ensures the structural strength, improves the paraffin scraping effect and prevents eccentric wear.

The purpose of the invention is realized by the following technical scheme: a rotary wax scraping centralizer comprises

A screw;

the coupling is arranged at one end of the screw and is fixedly connected with the screw;

the reversing tooth group is sleeved on the screw rod and comprises a first reversing tooth and a second reversing tooth, the first reversing tooth is fixedly connected with the coupling, the second reversing tooth is fixed with one end of the locking nut and is fixed on the screw rod through the locking nut, and the first reversing tooth and the sawtooth a of the second reversing tooth are oppositely arranged;

the utility model provides a nylon glass fiber body of righting, nylon glass fiber body of righting establishes the cover body on the screw rod and arranges the sawtooth b of set body both sides in respectively including the cover, the sawtooth b of set body both sides respectively with first switching-over tooth, sawtooth a on the second switching-over tooth mutually supports, the cover body flushes the setting with the sawtooth b formula molding structure as an organic whole of both sides and the sawtooth b of set body and both sides, be equipped with the sand grip that a plurality of equidistant settings on the outer wall of the cover body, the height of sand grip is progressively increased progressively by one side sawtooth b to opposite side sawtooth b, the high extending direction of two adjacent sand grips is the setting of staggering, the extending direction of sand grip sets up along.

The invention is further improved in that: the sawteeth a and b are in straight sawteeth shape, and the tooth angle is 60 degrees.

The invention is further improved in that: the specific manufacturing process of the nylon glass fiber centralizing body comprises the following specific steps:

A. selecting raw materials: selecting 60-70 parts by weight of nylon 6, 40-55 parts by weight of long glass fiber, 12-18 parts by weight of polypropylene, 3-8 parts by weight of silane coupling agent, 10-12 parts by weight of reinforcing filler and 1-3 parts by weight of heat stabilizer;

B. mixing raw materials: drying nylon at 85-95 ℃ for 7-8 hours, mixing the nylon and polypropylene, pouring the mixture into a mixing roll, charging nitrogen, starting the mixing roll at 230-240 ℃ for mixing for 50-60min to obtain a mixture a; after the pressure of the mixing roll is relieved, adding a silane coupling agent, a reinforcing filler and a heat stabilizer into the mixing roll to mix with the mixture a, then filling nitrogen, starting the mixing roll at the temperature of 230 ℃ and 240 ℃ to mix for 1-1.5h to obtain a mixture b;

C. adding the mixture b into a double-screw extruder for extrusion, adding long glass fiber into a glass fiber inlet of the double-screw extruder, melting, extruding, cooling and granulating at the screw rotating speed of 180-;

D. molding: and D, placing the nylon glass fiber material prepared in the step C into an injection molding machine for injection molding to prepare the nylon glass fiber centralizing body.

Compared with the prior art, the invention has the following advantages: the nylon fiber centralizing body is improved in structure and material, so that the structural strength is ensured, the wax scraping effect is improved, and eccentric wear is prevented.

Description of the drawings:

FIG. 1 is a schematic structural view of a rotary paraffin scraping centralizer according to the present invention.

Reference numbers in the figures: 1-screw rod, 2-coupling, 3-first reversing tooth, 4-second reversing tooth, 5-locknut, 6-sawtooth a, 7-nylon glass fiber centralizing body, 71-sleeve body, 72-sawtooth b and 73-convex strip.

The specific implementation mode is as follows:

for the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

FIG. 1 shows an embodiment of a rotary wax scraping centralizer of the invention, comprising

A screw 1;

the coupling 2 is arranged at one end of the screw and is fixedly connected with the screw 1;

the reversing tooth group is sleeved on the screw rod 1 and comprises a first reversing tooth 3 and a second reversing tooth 4, the first reversing tooth 3 is fixedly connected with the coupling 2, the second reversing tooth 4 is fixed with one end of the locking nut 5, the second reversing tooth 4 is fixed on the screw rod 1 through the locking nut 5, and the saw teeth a6 of the first reversing tooth 3 and the second reversing tooth 4 are arranged in opposite directions;

the utility model provides a nylon glass fiber body 7 of righting, nylon glass fiber body 7 of righting is including the cover body 71 of establishing on screw rod 1 and arrange the sawtooth b72 of cover body 71 both sides respectively in including the cover, the sawtooth b72 of cover body 71 both sides respectively with first switching-over tooth 3, sawtooth a6 on the second switching-over tooth 4 mutually supports, cover body 71 and the sawtooth b72 formula forming structure as an organic whole of both sides and cover body 71 flush the setting with the sawtooth b72 of both sides, be equipped with the sand grip 73 of a plurality of equidistant settings on the outer wall of cover body 71, the height of sand grip 73 is progressively increased progressively by one side sawtooth b72 to opposite side sawtooth b72, the high extending direction of two adjacent sand grips 73 is the setting of staggering, the extending direction of sand grip 73 sets up along with the.

The nylon fiber centralizing body 7 is improved in structure and material, so that the structural strength is ensured, the wax scraping effect is improved, and eccentric wear is prevented.

Further, the saw teeth a6 and b72 are straight saw teeth and have a tooth angle of 60 °.

The rotatory wax centralizer of scraping is connected on the sucker rod, the external diameter of glass fiber body 7 of righting will force the external diameter of coupling 2 big, play the effect of righting, make the sucker rod coupling avoid with the sucker rod contact eccentric wear, the height of sand grip 73 on the glass fiber body 7 of righting progressively increases progressively, and the high extending direction of two adjacent sand grips 73 is the setting of staggering, along with the up-and-down reciprocating motion of sucker rod, the body 7 of righting is autogiration on screw rod 1, utilize straight sawtooth form sawtooth a6 and sawtooth b72 and two adjacent clearance groove type structures between sand grip 73 to make the body of righting rotatory, play the effect of scraping the wax along with the up-and-down fluctuation motion of sucker rod.

The extending direction of the convex strip 73 is arranged along with the rotating direction of the sleeve body 71, so that the variable load borne by the lower sucker rod column during the downward stroke is reduced, eccentric wear is avoided, the tooth angle between the sawteeth a6 and b72 is 60 degrees, the meshing force between the sawteeth a6 and b72 is ensured, the stability is improved, and the strength of the centralizing body is ensured.

Further, the specific manufacturing process of the nylon glass fiber centralizing body 7 comprises the following specific steps:

A. selecting raw materials: selecting 60-70 parts by weight of nylon 6, 40-55 parts by weight of long glass fiber, 12-18 parts by weight of polypropylene, 3-8 parts by weight of silane coupling agent, 10-12 parts by weight of reinforcing filler and 1-3 parts by weight of heat stabilizer;

B. mixing raw materials: drying nylon at 85-95 ℃ for 7-8 hours, mixing the nylon and polypropylene, pouring the mixture into a mixing roll, charging nitrogen, starting the mixing roll at 230-240 ℃ for mixing for 50-60min to obtain a mixture a; after the pressure of the mixing roll is relieved, adding a silane coupling agent, a reinforcing filler and a heat stabilizer into the mixing roll to mix with the mixture a, then filling nitrogen, starting the mixing roll at the temperature of 230 ℃ and 240 ℃ to mix for 1-1.5h to obtain a mixture b;

C. adding the mixture b into a double-screw extruder for extrusion, adding long glass fiber into a glass fiber inlet of the double-screw extruder, melting, extruding, cooling and granulating at the screw rotating speed of 180-;

D. molding: and D, placing the nylon glass fiber material prepared in the step C into an injection molding machine for injection molding to prepare the nylon glass fiber centralizing body.

The glass fiber straightening body manufactured by adopting the steps has the structural tensile strength of 198MPa, the bending strength of 290MPa, the notch impact strength of 18MPa, the wear resistance degree of 40-50% higher than that of the traditional straightening body, overcomes eccentric wear, realizes uniform wax scraping, reduces the wear degree and prolongs the service life.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.