CN221017120U - Oil pipe external screw thread sealing grease smearing tool - Google Patents

Abstract

The utility model relates to an oil pipe external thread sealing grease smearing tool, which comprises a grease smearing head, a grease smearing shell, a grease storage bin and a grease pushing rod, wherein the grease pushing mechanism is provided with a gear, a screw rod and a grease pushing cylinder provided with the grease pushing rod, one end of the screw rod penetrates through a fixing block in a fixing mechanism to be in threaded connection with a threaded hole in the gear, and the other end of the screw rod is fixedly connected with the grease pushing rod; the front end of the grease coating shell is sequentially connected with the grease coating head provided with a valve and the cleaning head provided with a cleaning rod, and the rear end of the grease coating shell is sequentially connected with Chu Zhicang provided with a grease injection nozzle and a grease pushing cylinder; the fixing mechanism is also provided with a retention plate and a support rod, the support rod is connected between the cleaning head and the fat storage bin, the retention block is fixedly connected with one support rod, one end of the retention plate is fixedly connected with the retention block, and the other end of the retention plate is in sliding connection with the gear. In order to spread the sealing grease more uniformly, a cleaning head is arranged, so that the use effect is better.

Description

Oil pipe external screw thread sealing grease smearing tool

Technical Field

The utility model relates to a smearing device for oil pipe threads, in particular to an oil pipe external thread sealing grease smearing tool.

Background

Before the oil field workover operation is carried out on the tubing string, sealing grease needs to be smeared on the external thread of the oil pipe, so that the tightness of the tubing string and the lubrication of the thread after connection are ensured, the abrasion among the threads of the oil pipe is reduced, and the service life of the oil pipe is prolonged.

The most common practice at present is: the manual brush is used for dipping some sealing grease and smearing the sealing grease on the external thread of the oil pipe, but the working efficiency of the sealing grease smearing mode is low, and meanwhile, too many defects such as uneven smearing, dripping and waste of the sealing grease, inconvenient operation, low working efficiency and the like are also accompanied.

In order to solve the above problems, several patent technologies related to the same have been presented: the oil pipe sealing grease smearing tool disclosed in publication No. CN109939904A is characterized in that the left end of an outer cylinder is connected with a grease smearing head, the outer part of the left end of the grease smearing head is sleeved with a grease smearing head outer sleeve, an annular gap is reserved between the middle part of the grease smearing head outer sleeve and the grease smearing head, a sealing grease channel is formed in the grease smearing head, a piston is arranged in the outer cylinder, an inner sleeve is arranged in the piston, a spring is arranged between the piston and a rear cover, the rear cover is connected with a push rod, and the left end of the push rod is connected with the inner sleeve.

The device can solve the problem that the existing oil pipe thread sealing grease is smeared with the manual brush at low efficiency.

However, in practical use, the following technical problems exist: (1) When the device is used for smearing sealing grease on the external thread of the oil pipe, the external thread section of the oil pipe is firstly placed in the grease smearing head, then a switch on the grease smearing shell is turned on, and finally the push rod is pushed to move forwards. In the process of smearing the external thread of the oil supply pipe, the switch is in a non-closed state, and meanwhile, the push rod is always pushing sealing grease forward until the oil supply pipe is stopped from supplying the sealing grease to the external thread of the oil supply pipe after the oil smearing head rotates one circle. In the painting engineering, the push rod cannot be guaranteed to advance at a constant speed all the time, so that the grease coating head cannot be guaranteed to uniformly paint sealing grease on the external thread of the oil pipe, too much grease is coated, the external thread and the internal thread are easy to overflow after being meshed, the sealing grease falls into a well, parts such as an oil well nozzle, a water distributor of the well and the like are easy to be blocked, too little grease coating can cause the external thread and the internal thread of the oil pipe to be meshed loosely, gaps are reserved, and therefore oil and water can enter the oil pipe from the gaps, and crude oil in the oil pipe is polluted; (2) Because the smearing head can not smear evenly, the follow-up problem caused by the fact that the sealing of the threaded section of the oil pipe is not tight still exists.

An oil pipe thread sealing grease smearing device disclosed in application number CN201220363946.0 comprises a sealing grease rotary smearing device and a sealing grease injector; the sealing grease rotary applicator comprises a cylindrical shell, a supporting plate arranged at the left end, a righting plate arranged at the middle right part, a circular arc handle arranged at the upper middle part of the shell, a rotating shaft penetrating through the supporting plate and the righting plate, an L-shaped handle or a miniature motor connected with a key groove at the left end of the rotating shaft, a rotary righting rod fixedly connected with the right end of the rotating shaft, grease coating barrels with grooves at the two ends and grooves in the middle part fixedly connected with the rotary righting rod, grease discharging holes uniformly distributed in rows and brushes corresponding to the grease discharging holes are arranged on the peripheral surface of the grooves in the middle part of the grease coating barrel, the grooves at the two ends of the grease coating barrel are in dynamic sealing fit with the shell, and a grease inlet hole is formed in the shell corresponding to the middle part of the grooves at the two ends; the sealing grease injector comprises a grease outlet storage cylinder in threaded connection with the shell, a push disc with a push rod, a spiral spring and a pressing cap, wherein the push disc is arranged in the grease storage cylinder, the spiral spring is arranged between the push disc and the bottom of the grease storage cylinder and sleeved on the push rod, and the pressing cap is in threaded connection with the grease storage cylinder; the push rod passes through the center of the press cap, and the end part is provided with a handle.

The device is time-saving and labor-saving in use, and is simple and quick in operation; reduces the labor intensity and improves the working efficiency. The oil pipe thread sealing grease smearing device improves the workover quality and effectively prolongs the service life of the oil pipe thread. The oil pipe thread sealing grease smearing device ensures that the sealing grease is used in a closed environment, and simultaneously saves the consumption of the sealing grease and reduces the expenditure of material cost.

However, the whole scheme of above-mentioned patent technique is L shape, and the space occupies more than great, and stability is poor when painting, receives staff's manipulation's influence, and the swing phenomenon can appear in equipment when painting, leads to sealing grease to paint unevenly.

The utility model discloses a sealing grease applicator with the application number CN201420429277.1, which relates to a device for uniformly applying thread sealing grease and screw thread oil of an oil pipe, a drill rod and the like, and the utility model is realized in the following way: the sealing grease applicator comprises an oil storage tank, a main body and a handle, wherein the handle is arranged outside the main body; the oil storage tank is connected with the main body through ladder threads, and the oil storage tank can rotate into the main body through the ladder threads.

The beneficial effects of said utility model are: the sealing grease is uniformly coated, so that the sealing grease is saved, and the operation is quick, convenient and light; the coating requirements of threads with different types and specifications are met through the replacement of the coating head; through the adjustment of oil storage tank volume, can satisfy different user's requirements.

However, the overflow amount of the sealing grease from the smearing head in the technology is not controlled, the phenomenon of more overflow or less overflow can occur, the hairbrush strips which are alternately distributed can meet the requirement of even smearing according to the fact that the smearing head rotates to a certain speed, the technology has a certain requirement on the method of smearing workers, and the technology is used for smearing inner threads and is not suitable for smearing the sealing grease of outer threads.

Therefore, it is necessary to develop a grease application tool for the external thread of the oil pipe.

Disclosure of Invention

The utility model aims to provide an oil pipe external thread sealing grease smearing tool, which aims to solve the problem of uneven smearing of the oil pipe external thread sealing grease in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an oil pipe external screw thread sealing grease smearing tool, includes fat liquoring head, fat liquoring shell, stores up fat storehouse and pushes away fat pole, wherein: the fat pushing mechanism is provided with a gear, a screw rod and a fat pushing cylinder provided with a fat pushing rod, one end of the screw rod penetrates through a fixing block in the fixing mechanism to be in threaded connection with a threaded hole in the gear, and the other end of the screw rod is fixedly connected with the fat pushing rod; the front end of the grease coating shell is sequentially connected with the grease coating head provided with a valve and the cleaning head provided with a cleaning rod, and the rear end of the grease coating shell is sequentially connected with Chu Zhicang provided with a grease injection nozzle and a grease pushing cylinder; the fixing mechanism is also provided with a retention plate and a support rod, the support rod is connected between the cleaning head and the fat storage bin, the retention block is fixedly connected with one support rod, one end of the retention plate is fixedly connected with the retention block, and the other end of the retention plate is in sliding connection with the gear.

Preferably, the cleaning head is further provided with an assembly ring, a cleaning head sliding block and a fat receiving box, the lower end of the assembly ring is provided with the cleaning head sliding block, the upper end of the assembly ring is provided with a cleaning head body, and a cleaning rod and the fat receiving box are arranged in the cleaning head body; the cleaning head sliding block is a T-shaped block or a dovetail block, and the cleaning head is in sliding connection with the grease coating head through the cleaning head sliding block.

Preferably, the front end face of the grease coating head is provided with a grease coating head sliding groove which is a T-shaped groove matched with the cleaning head sliding block or a dovetail groove and is arranged in the front end face of the grease coating head at the periphery of the grease flowing channel.

Preferably, the fat flow channel is formed by a circle of fat flow holes or fat flow grooves arranged in the front end body of the fat coating head, and the outer diameter formed by the fat flow holes or the fat flow grooves is consistent with the aperture of the central hole of the fat coating head; the front end body of the fat coating head formed by the fat flow channel enclosure is in line with the aperture of the center hole of the oil pipe to be coated.

Preferably, the cleaning rod is provided with external threads and can be installed in a threaded hole in the cleaning head body, the lower end of the cleaning rod is provided with a cleaning tooth body, and the cleaning tooth body is a conical rubber tip or a conical brush head matched with the external thread tooth of the oil pipe.

Preferably, the fat receiving box is mounted on the opposite side of the cleaning rod through a mounting hole in the cleaning head, and the fat receiving opening is formed in the upper end of the fat receiving box, is a bucket-shaped opening or a conical opening, and has an upper port diameter larger than that of the mounting hole in the cleaning head body.

Preferably: the support rods are L-shaped rod bodies, the two support rods are correspondingly fixed on two sides of the cleaning head and the fat storage bin, and one ends of the two support rods are fixedly connected with the cleaning head or the fat storage bin through screws; the grease pushing rod is an L-shaped rod body, and the downward rod body is directly and fixedly connected with the screw rod; the grease pushing rod can be fixedly connected with the screw rod through a connecting rod.

Preferably, the retention plate is an arc plate and is provided with two retention plates, one end of each retention plate is fixedly connected with the corresponding retention block, and the other end of each retention plate is connected in a gear chute in the end face of the rear end of the gear through a retention plate sliding block.

Preferably, the gear chute is a circular chute arranged at the periphery of the threaded hole, and the radian of the retention plate is consistent with that of the gear chute; the sliding block of the retention plate is a T-shaped block or a dovetail block, and the gear sliding groove is a T-shaped groove or a dovetail groove which is consistent with the sliding block of the retention plate.

Preferably: the gear ring is arranged in the outer wall of the rear end of the greasing shell, and a one-way valve or a screwed plug or a threaded cover is arranged in the greasing nozzle; the fixing block is provided with a limiting hole, and the screw rod can pass through the limiting hole.

Compared with the prior art, the utility model has the beneficial effects that: in the utility model, the gear is driven to rotate by the gear ring on the grease coating shell, the screw rod is driven to move forwards or backwards by the rotation of the gear, and the grease pushing rod is driven to move forwards or backwards at a constant speed while the screw rod does not rotate, so that the sealing grease can be uniformly pushed out of the external thread section of the oil pipe, and all adverse effects caused by too much coating of the sealing grease are avoided.

(2) In order to uniformly coat the sealing grease, the cleaning head is arranged, and the excessive sealing grease can be scraped by the cleaning tooth body through the cleaning tooth body arranged at the lower end of the cleaning rod in the cleaning head after the sealing grease is coated on the external thread of the oil pipe by the grease coating head, and the cleaning head is manually rotated to withdraw from the tool.

The utility model can smear the sealing grease on the external thread of the oil pipe more uniformly, and can recycle and utilize the redundant sealing grease scraped by the cleaning tooth body, thereby having better use effect.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a cleaning head according to the present utility model;

FIG. 3 is a schematic view of the structure of the present utility model with the cleaning head removed;

FIG. 4 is a schematic view of the connection structure of the gear and the retainer plate of the present utility model;

FIG. 5 is a cross-sectional view of FIG. 3;

FIG. 6 is a schematic view of the construction of the first embodiment of the grease nipple of FIGS. 1 and 5;

fig. 7 is a schematic view of a second embodiment of the grease nipple of fig. 1 and 5.

In the figure:

A greasing head 1 and a greasing head chute 11;

A fat coating shell 2, a fat storage bin 3 and a fat pushing rod 4;

The connecting rod 5, the screw rod 51, the gear 52, the gear ring 53 and the threaded hole 54;

The fixing block, the limiting hole 61, the fixing plate 62, the T-shaped block 63, the T-shaped groove 64 and the supporting rod 65;

Cleaning head 7, assembly ring 71, cleaning head slider 72, grease receiving box 73, cleaning rod 74, wire hole 75, cleaning tooth 76, grease receiving opening 77, mounting hole 78, grease receiving box 73;

Valve 8, grease filling nozzle 9.

Detailed Description

The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present utility model. The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1-7, an oil pipe external thread sealing grease smearing tool comprises a grease smearing head 1, a grease smearing shell 2, a grease storage bin 3 and a grease pushing rod 4, wherein the grease pushing mechanism is provided with a gear 52, a screw rod 51 and a grease pushing cylinder provided with the grease pushing rod 4, one end of the screw rod 51 penetrates through a fixing block in a fixing mechanism 6 to be in threaded connection with a threaded hole 54 in the gear 52, and the other end of the screw rod 51 is fixedly connected with the grease pushing rod 4; the grease coating head 1 is provided with a grease flow channel, the outer wall of the grease coating shell 2 is provided with a gear ring 53 meshed with the gear 52, the front end of the grease coating shell 2 is sequentially connected with the grease coating head 1 provided with a valve 8 and a cleaning head 7 provided with a cleaning rod 74, and the rear end is sequentially connected with a grease storage bin 3 provided with a grease filling nozzle 9 and a grease pushing barrel; the fixing mechanism 6 is also provided with a retention plate 62 and a support rod 65, the support rod 65 is connected between the cleaning head 7 and the fat storage bin 3, the retention block is fixedly connected with one support rod 65, one end of the retention plate 62 is fixedly connected with the retention block, and the other end is in sliding connection with the gear 52.

In the present utility model, the screw 51 is supported by the support rod 65 and the retainer block, is connected to the screw hole 54 in the gear 52, and is connected at the other end to the fat-pushing rod 4 mounted in the fat-pushing cylinder. When the grease coating shell 2 provided with the gear ring 53 is rotated, the gear ring 53 drives the gear 52 to rotate, so that the grease pushing rod 4 can be driven to move forwards or backwards in the grease pushing cylinder, sealing grease in the grease pushing cylinder is pushed into the grease coating head 1, and the sealing grease is extruded into the cleaning head 7 through the grease flow channel through the grease coating head 1 and coated outside the external thread section of the oil pipe.

After the thread section of the oil pipe is smeared, the cleaning head 7 is rotated, the tool is withdrawn from the oil pipe, and in the withdrawal process, the cleaning rod 74 cleans redundant sealing grease along with the cleaning head, and the cleaned sealing grease drops into the cleaning head 7.

On the basis of the first embodiment, the present utility model also has the following embodiments: one preferred embodiment is: the cleaning head 7 is also provided with an assembly ring 71, a cleaning head sliding block 72 and a grease receiving box 73, the lower end of the assembly ring 71 is provided with the cleaning head sliding block 72, the upper end of the assembly ring 71 is provided with a cleaning head body, and a cleaning rod 74 and the grease receiving box 73 are arranged in the cleaning head body; the cleaning head slider 72 is a T-block or a dovetail block, and the cleaning head 7 is slidably connected to the grease head 1 via the cleaning head slider 72.

One preferred embodiment is: the front end face of the grease coating head 1 is provided with a grease coating head chute 11, and the grease coating head chute 11 is a T-shaped groove or a dovetail groove matched with the cleaning head slider 72 and is arranged in the front end face of the grease coating head 1 at the periphery of the grease flow channel.

One preferred embodiment is: the fat flow channel is formed by a circle of fat flow holes or fat flow grooves arranged in the front end body of the fat coating head 1, and the outer diameter formed by the fat flow holes or the fat flow grooves is consistent with the aperture of the central hole of the fat coating head 1; the front end body of the greasing head 1 formed by the grease flow passage enclosure is in accordance with the aperture of the center hole of the smeared oil pipe. When the grease housing 2 is rotated and the grease pushing rod 4 is pushed forward, the sealing grease extruded from the grease flow passage in the grease head 1 can be just coated into the external thread of the oil pipe.

One preferred embodiment is: the cleaning rod 74 is provided with external threads and can be installed in a threaded hole 75 in the body of the cleaning head 7, the lower end of the cleaning rod 74 is provided with a cleaning tooth body 76, and the cleaning tooth body 76 is a conical glue tip or a conical brush head matched with the external thread profile of the oil pipe. The extra sealing grease can be scraped and brushed off, so that the hidden trouble that the underground tool is blocked easily because the excessive sealing grease smeared in the external thread of the oil pipe is prevented from overflowing and falling into the well after being meshed with the internal thread in the oil pipe coupling; if the sealing grease is smeared too little, the problem that the engagement of the internal thread and the external thread in the oil pipe and the oil pipe coupling is not tight can exist, and gaps are left, so that oil and water enter the joint of the oil pipe column from the gaps, and damage is caused to the oil pipe column. After the oil pipe external thread is finished, the cleaning rod 74 in the cleaning head 7 is manually rotated downwards to enable the cleaning tooth body 76 to be contacted with the oil pipe external thread and meshed together. In the process of rotating and exiting the tool, the sealing grease on the external thread of the oil pipe can be uniformly smeared once, and adverse effects caused by uneven smearing of the sealing grease on the external thread of the oil pipe, such as pipe column corrosion, breaking and disengaging caused by poor sealing performance of the oil pipe column, are avoided.

One preferred embodiment is: the grease receiving box 73 is arranged opposite to the cleaning rod 74 through a mounting hole 78 in the cleaning head 7, a grease receiving opening 77 is arranged at the upper end of the grease receiving box 73, the grease receiving opening 77 is a bucket-shaped opening or a conical opening, and the diameter of the upper opening is larger than that of the mounting hole 78 in the cleaning head 7 body. The grease receiving box 73 is arranged in the body of the cleaning head 7 opposite to the cleaning rod 74, and can effectively receive the sealing grease scraped by the cleaning teeth 76 at the lower end of the cleaning rod 74. When the tool is rotated to enable the external thread of the oil pipe to completely leave the cleaning head 7, the excessive sealing grease can easily fall into the grease receiving port 77 and then into the grease receiving box 73 after being smeared and scraped by the cleaning tooth body 76, so that the excessive sealing grease can be recycled.

One preferred embodiment is: the support rods 65 are L-shaped rod bodies, the two support rods 65 are correspondingly fixed on two sides of the cleaning head 7 and the fat storage bin 3, and one ends of the two support rods 65 are fixedly connected with the cleaning head 7 or the fat storage bin 3 through screws; the grease pushing rod 4 is an L-shaped rod body, and the downward rod body is directly and fixedly connected with the screw rod 51; the grease pushing rod 4 can also be fixedly connected with the screw rod 51 through the connecting rod 5. The fixed connection may be a welded or screw connection.

When the grease housing 2 is rotated so that the gear ring 53 drives the gear 52 to rotate, the threaded hole 54 in the gear 52 drives the screw 51 to rotate forward or backward in compliance with the rotation direction of the gear 52, forcing the grease pushing rod 4 to advance forward or withdraw backward in the grease pushing cylinder.

One preferred embodiment is: the retaining plate 62 is an arc-shaped plate and is provided with two pieces, one end of the retaining plate 62 is fixedly connected with the retaining block, and the other end of the retaining plate is connected in a gear chute 64 in the rear end face of the gear 52 through a retaining plate sliding block 63.

One preferred embodiment is: the gear chute 64 is a circular chute arranged at the periphery of the threaded hole 54, and the radian of the retention plate 62 is consistent with that of the gear chute 64; the retainer plate slider 63 is a T-shaped block or a dovetail block, and the gear runner 64 is a T-shaped slot or a dovetail slot that coincides with the retainer plate slider 63.

One preferred embodiment is: the gear ring 53 is arranged in the outer wall of the rear end of the greasing shell 2, and a one-way valve or a screwed plug or a threaded cover is arranged in the greasing nozzle 9; the retaining block is provided with a limiting hole 61, and the screw rod 51 can pass through the limiting hole 61; the outer wall of the greasing shell 2 is provided with an anti-slip belt, which is convenient to rotate.

The grease is conveniently injected when the one-way valve is arranged in the grease injection nozzle 9, and the screw plug or the screw cap can be unscrewed when the screw plug or the screw cap is arranged, so that the grease is injected into the grease pushing cylinder.

When in use, the valve 8 is closed, sealing grease is added from the grease filling nozzle 9 in Chu Zhicang, the valve 8 is turned 90 degrees to open, and the external thread end of the oil pipe is inserted into the cleaning head 7 and is propped against the front end of the grease filling head 1.

The grease coating shell 2 is screwed by hand, and when the grease coating shell 2 rotates, the gear ring 53 and the gear 52 on the grease coating shell 2 are driven to rotate; because one end of the retention plate 62 is fixed on the retention block, and the other end is movably connected with the gear 52, the gear 52 only drives the screw 51 to rotate in the threaded hole 54, and the screw 51 advances or retreats along with the rotation direction of the gear 52, so that sealing grease can be smeared on the oil pipe or grease can be injected into the grease pushing cylinder.

The limiting hole 61 in the retention block limits the screw rod 51 to rotate only in the retention block, and simultaneously, the screw rod 51 moves leftwards to drive the connecting rod 5 to move, so as to drive the grease pushing rod 4 to move at a constant speed, and sealing grease in the grease pushing bin 3 is extruded out of the external thread of the oil pipe at a constant speed through the grease flow channel in the grease coating head 1.

After the oil pipe external thread is coated, the cleaning rod 74 on the cleaning head 7 is manually rotated, and the cleaning rod 74 moves downwards, so that the gum tip or the brush of the cleaning tooth 76 is just meshed with the oil pipe external thread. When the grease coating head 1 is rotated to be far away from the external thread of the oil pipe, the grease on the external thread of the oil pipe can be uniformly coated, and adverse effects caused by uneven coating of the grease on the external thread of the oil pipe are avoided. Meanwhile, the redundant sealing grease can easily fall into the grease receiving port 77 and then fall into the grease receiving box 73, so that the redundant sealing grease can be recycled and utilized, and the use effect is good.

The embodiments described above are only exemplary embodiments, but the present utility model is not limited to these embodiments, and modifications may be made by those skilled in the art without departing from the spirit and scope of the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and concept of the present utility model should be included in the scope of the present utility model. Therefore, the scope of protection is not limited to the description above.

Claims (10)

1. The utility model provides an oil pipe external screw thread sealing grease smearing tool, includes fat liquoring head, fat liquoring shell, stores up fat storehouse and pushes away fat pole, characterized by: the fat pushing mechanism is provided with a gear, a screw rod and a fat pushing cylinder provided with a fat pushing rod, one end of the screw rod penetrates through a fixing block in the fixing mechanism to be in threaded connection with a threaded hole in the gear, and the other end of the screw rod is fixedly connected with the fat pushing rod; the front end of the grease coating shell is sequentially connected with the grease coating head provided with a valve and the cleaning head provided with a cleaning rod, and the rear end of the grease coating shell is sequentially connected with Chu Zhicang provided with a grease injection nozzle and a grease pushing cylinder; the fixing mechanism is also provided with a retention plate and a support rod, the support rod is connected between the cleaning head and the fat storage bin, the retention block is fixedly connected with one support rod, one end of the retention plate is fixedly connected with the retention block, and the other end of the retention plate is in sliding connection with the gear.

2. The oil pipe external thread sealing grease smearing tool as recited in claim 1, wherein the cleaning head is further provided with an assembly ring, a cleaning head sliding block and a grease receiving box, the lower end of the assembly ring is provided with the cleaning head sliding block, the upper end of the assembly ring is provided with a cleaning head body, and the cleaning head body is internally provided with a cleaning rod and the grease receiving box; the cleaning head sliding block is a T-shaped block or a dovetail block, and the cleaning head is in sliding connection with the grease coating head through the cleaning head sliding block.

3. An oil pipe external thread sealing grease applying tool as claimed in claim 2, wherein the front end face of the grease applying head is provided with a grease applying head sliding groove which is a T-shaped groove matched with the cleaning head sliding block or a dovetail groove and is arranged in the front end face of the grease applying head at the periphery of the grease flowing channel.

4. A tube external thread sealing grease applicator as claimed in claim 3, wherein said grease flow passage is formed by a ring of grease holes or grooves formed in the front body of the grease head, the outer diameter of said holes or grooves corresponding to the diameter of the central hole of the grease head; the front end body of the fat coating head formed by the fat flow channel enclosure is in line with the aperture of the center hole of the oil pipe to be coated.

5. The oil pipe external thread sealing grease smearing tool as recited in claim 2, wherein the cleaning rod is provided with external threads and can be installed in a threaded hole in the cleaning head body, the lower end of the cleaning rod is a cleaning tooth body, and the cleaning tooth body is a conical glue tip or a conical brush head matched with the tooth shape of the external threads of the oil pipe.

6. An oil pipe external thread sealing grease applying tool as claimed in claim 5, wherein the grease receiving box is mounted opposite the cleaning rod through a mounting hole in the cleaning head, and the upper end of the grease receiving box is provided with a grease receiving opening which is a bucket-shaped opening or a conical opening and has an upper port diameter larger than the aperture of the mounting hole in the cleaning head body.

7. An oil tube external thread sealing grease applicator as recited in claim 1, wherein: the support rods are L-shaped rod bodies, the two support rods are correspondingly fixed on two sides of the cleaning head and the fat storage bin, and one ends of the two support rods are fixedly connected with the cleaning head or the fat storage bin through screws; the grease pushing rod is an L-shaped rod body, and the downward rod body is directly and fixedly connected with the screw rod; the grease pushing rod can be fixedly connected with the screw rod through a connecting rod.

8. The oil pipe external thread sealing grease smearing tool according to claim 1, wherein the retaining plate is an arc-shaped plate and is provided with two retaining plates, one end of each retaining plate is fixedly connected with the corresponding retaining block, and the other end of each retaining plate is connected in a gear chute in the end face of the rear end of the gear through a retaining plate sliding block.

9. The oil pipe external thread sealing grease applying tool according to claim 8, wherein the gear chute is a circular chute arranged at the periphery of the threaded hole, and the radian of the retention plate is in accordance with the radian of the gear chute; the sliding block of the retention plate is a T-shaped block or a dovetail block, and the gear sliding groove is a T-shaped groove or a dovetail groove which is consistent with the sliding block of the retention plate.

10. An oil tube external thread sealing grease applicator as recited in claim 1, wherein: the gear ring is arranged in the outer wall of the rear end of the greasing shell, and a one-way valve or a screwed plug or a threaded cover is arranged in the greasing nozzle; the fixing block is provided with a limiting hole, and the screw rod can pass through the limiting hole.