CN209901575U

CN209901575U - Spraying auxiliary assembly of oil drill pipe joint

Info

Publication number: CN209901575U
Application number: CN201920277757.3U
Authority: CN
Inventors: 张蕾; 康正芳; 张华明
Original assignee: Yancheng Guohuan Ruibao Technology Co Ltd
Current assignee: Yancheng Guohuan Ruibao Technology Co Ltd
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-01-07
Anticipated expiration: 2029-03-05

Abstract

The utility model relates to the technical field of oil drilling, in particular to a spraying auxiliary device of an oil drill rod joint, which is convenient for users to spray the oil drill rod joint, is convenient to adapt to the requirements of users with different heights and reduces the use limitation; the pollution to air in the spraying process is reduced, the air quality is improved, and the environmental protection is improved; the spray gun is positioned above the top plate, and the left front side, the left rear side, the right front side and the right rear side of the bottom end of the top plate are respectively connected with the top ends of the four groups of supporting legs; the middle part of the bottom end of the rotary disc is connected with the top end of the rotary shaft, and the middle part of the top end of the top plate is provided with a placing groove; still include bottom plate, purifying box, connecting pipe, backup pad, four supporting legs of group, water pump, inlet tube, drain pipe, intake pipe, collection fill and blast pipe, the top of bottom plate is connected with the bottom of purifying box.

Description

Spraying auxiliary assembly of oil drill pipe joint

Technical Field

The utility model relates to a technical field of oil drilling especially relates to a spraying auxiliary assembly of oil drill pipe joint.

Background

As is well known, a spray coating auxiliary device for an oil drill pipe joint is an auxiliary device for spray coating the oil drill pipe joint, and is widely used in the field of oil drilling; the spraying auxiliary equipment of the existing oil drill rod joint comprises a spray gun, a top plate and four groups of supporting legs, wherein the spray gun is positioned above the top plate, and the left front side, the left rear side, the right front side and the right rear side of the bottom end of the top plate are respectively connected with the top ends of the four groups of supporting legs; when the spraying auxiliary equipment of the existing oil drill pipe joint is used, firstly, the oil drill pipe joint is placed at the top end of a top plate, then a spray gun is connected with an external control device and is opened, and then a user holds the spray gun by hand to spray the circumferential outer wall of the oil drill pipe joint; the spraying auxiliary equipment of the existing oil drill rod joint is used for discovering that the oil drill rod joint is relatively free at the top end of a spray gun, so that a user is inconvenient to spray the oil drill rod joint, and the requirements of users with different heights are difficult to adapt, so that the use limitation is high; and the spraying process produces air pollution, influences air quality, leads to the feature of environmental protection relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a spraying device which is convenient for users to spray the oil drill pipe joint, and is convenient for adapting to the requirements of users with different heights, and reduces the use limitation; and the pollution of the spraying process to the air is reduced, the air quality is improved, and the environmental protection performance is improved.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint, including spray gun, roof and four groups of landing legs, the spray gun is located the top of roof, the left front side, the left rear side, the right front side and the right rear side of roof bottom are connected with the top of four groups of landing legs respectively; the middle part of the bottom end of the rotary disc is connected with the top end of the rotary shaft, a placing groove is formed in the middle part of the top end of the top plate, a ball bearing is arranged in the placing groove, the bottom end of the lead screw is connected with the middle part of the top end of the rotary disc, the lower nut is sleeved on the lead screw in a threaded manner, a first through hole which penetrates through the lower part and the upper part is formed in the middle part of the lower conical block, the top end of the lead screw penetrates through the first through hole and extends out of the outside of the top end of the lower conical block, the bottom end of the lower conical block is in contact with the top end of the lower nut, a second through hole which penetrates through the upper part and the lower part is formed in the middle part of the upper conical block, the top end of the lead screw penetrates through the second through hole and extends out of the outside; the device also comprises a bottom plate, a purification box, a connecting pipe, a supporting plate, four groups of supporting legs, a water pump, a water inlet pipe, a water drain pipe, an air inlet pipe, a collecting hopper, an air collecting hopper and an exhaust pipe, wherein the top end of the bottom plate is connected with the bottom end of the purification box, a cavity is arranged inside the purification box, an exhaust port is arranged at the top end of the purification box and is communicated with the cavity, the left output end of the connecting pipe penetrates through the lower side of the right end of the purification box and extends into the cavity, a valve is arranged on the connecting pipe and is positioned at the right side of the purification box, the left front side, the left rear side, the right front side and the right rear side of the bottom end of the supporting plate are respectively connected with the top ends of the four groups of supporting legs, the bottom ends of the four groups of supporting legs are all connected with the top end of the bottom plate, the bottom, the top output of water pump is connected with the bottom input of drain pipe, the left end of drain pipe is sealed, the left end of drain pipe passes the first half region of purifying box right-hand member and stretches into the inside to the cavity, and the left end and the cavity left side wall of drain pipe are connected, the bottom that is located the inside drain pipe of cavity is provided with the multiunit hole for water spraying, the inside middle part of cavity transversely is provided with the grid board, and the top of grid board is provided with globular filler, globular filler is located the downside of multiunit hole for water spraying, the left end input of intake pipe is connected with the right part output of collecting the fill, the right part output of intake pipe passes the downside of purifying box left end and stretches into the inside to the cavity, the bottom input of gas collection fill and the gas vent intercommunication of purifying box, the top output of gas collection fill is connected with the bottom input of.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint, still include the fixed plate, including a motor, an end cap, a controller, and a cover plate, the delivery box and row's material pipe, the right-hand member of fixed plate is connected with the left end of purifying box, the left side on fixed plate top is connected with the bottom of motor, the bottom of delivery box is connected with the right side on fixed plate top, the inside of delivery box is provided with the working chamber, the top of delivery box is provided with puts in the mouth, and put in the mouth and communicate with each other with the working chamber, the right-hand member of motor transversely is provided with the transmission shaft, be provided with helical blade on the transmission shaft, and helical blade is located the working chamber, the left part input of arranging the material pipe passes the downside of delivery box right-hand member and stretches into and communicates with each other with the inside.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint still includes workbin and material pipe, and the right-hand member of workbin is connected with the left end of purifying box, and the inside of workbin is provided with the inner chamber, and the top of workbin is provided with the upper shed, and the bottom of workbin is provided with the under shed to upper shed and under shed all communicate with each other with the inner chamber, and the under shed department intercommunication is provided with the hopper, and the bottom output of hopper is connected with the top input of material pipe, and the bottom output of material pipe communicates with the input of delivery box.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint still includes four group's connecting rods, and the top of four group's connecting rods is connected with left front side, left rear side, right front side and the right rear side of workbin bottom respectively, and the bottom of four group's connecting rods is connected with left front side, left rear side, right front side and the right rear side on fixed plate top respectively.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint, the left front side of bottom plate bottom, left rear side, right front side and right rear side all are provided with the universal wheel.

The utility model discloses a spraying auxiliary assembly that oil drill pipe connects still includes threaded rod and screwed pipe, and the top of threaded rod is connected with the right side of bottom plate bottom, and the bottom of threaded rod is inserted and spiral shell dress to the inside top of screwed pipe.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint still includes four groups and transfers steady lead screw, and the bottom of four groups's landing legs all is provided with the thread groove to inside the top of four groups's steady lead screw of group inserted respectively and spiral shell dress to four groups thread groove's bottom.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint, the bottom of four groups of steady lead screws of transferring all is provided with the non slipping spur.

Compared with the prior art, the beneficial effects of the utility model are that: the lower nut and the lower conical block are sequentially arranged on the lead screw, the lower nut is rotated to a proper height, the petroleum drill rod joint is sleeved on the lead screw, the top end of the lower conical block is inserted into the petroleum drill rod joint, then the upper conical block and the upper nut are sequentially arranged, the bottom end of the upper conical block is inserted into the petroleum drill rod joint, the upper nut is rotated to enable the bottom end of the upper nut to be tightly attached to the top end of the upper conical block to fix the petroleum drill rod joint, the rotary table is rotated, the spray gun is connected with an external control device, the spray gun is opened, the circumferential outer wall of the petroleum drill rod joint is conveniently sprayed, and the use limitation is reduced; through opening the valve and through closing the valve after injecting appropriate amount of water in the cavity of connecting pipe to the purifying box, open the water pump, water passes through the inlet tube in proper order, water pump and drain pipe are sprayed to spherical packing by the multiunit hole for water spraying of drain pipe on, open the air pump, waste gas loops through to collect to fight and the intake pipe enters into to the cavity of purifying box in, and waste gas is carried to spherical packing and is adsorbed the purification by the water on the spherical packing in the inside of cavity from bottom to top, the air after the absorption is in proper order through the air collecting fill, air pump and blast pipe discharge to the external world, water top-down on the spherical packing falls to the bottom of cavity and accomplishes the water circuit circulation, it is outer to reduce the waste gas that the spraying process produced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a partially enlarged view of the portion A in FIG. 1;

in the drawings, the reference numbers: 1. a spray gun; 2. a top plate; 3. a support leg; 4. a turntable; 5. a rotating shaft; 6. a ball bearing; 7. a lead screw; 8. a lower nut; 9. a lower conical block; 10. an upper conical block; 11. screwing a nut; 12. a base plate; 13. a purification box; 14. a connecting pipe; 15. a valve; 16. a support plate; 17. supporting legs; 18. a water pump; 19. a water inlet pipe; 20. a drain pipe; 21. a grid plate; 22. a spherical filler; 23. an air inlet pipe; 24. a collecting hopper; 25. a gas collecting hopper; 26. an exhaust pipe; 27. an air pump; 28. a fixing plate; 29. a motor; 30. a delivery box; 31. a discharge pipe; 32. a material box; 33. a material pipe; 34. a connecting rod; 35. a universal wheel; 36. a threaded rod; 37. a threaded pipe; 38. and (5) adjusting and stabilizing the screw rod.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 2, the auxiliary spraying device for the oil drill pipe joint of the present invention comprises a spray gun 1, a top plate 2 and four groups of legs 3, wherein the spray gun 1 is located above the top plate 2, and the left front side, the left rear side, the right front side and the right rear side of the bottom end of the top plate 2 are respectively connected with the top ends of the four groups of legs 3; the rotary table further comprises a rotary table 4, a rotating shaft 5, a screw 7, a lower nut 8, a lower conical block 9, an upper conical block 10 and an upper nut 11, the middle part of the bottom end of the rotary table 4 is connected with the top end of the rotating shaft 5, the middle part of the top end of the top plate 2 is provided with a placing groove, a ball bearing 6 is arranged in the placing groove, the bottom end of the screw 7 is connected with the middle part of the top end of the rotary table 4, the lower nut 8 is sleeved on the screw 7 in a threaded manner, the middle part of the lower conical block 9 is provided with, the top end of the screw rod 7 passes through the first through hole and extends out of the top end of the lower conical block 9, the bottom end of the lower conical block 9 is contacted with the top end of the lower nut 8, the middle part of the upper conical block 10 is provided with a second through hole which penetrates up and down, the top end of the screw rod 7 penetrates through the second through hole and extends out of the outside of the top end of the upper conical block 10, the upper nut 11 is sleeved on the screw rod 7 in a threaded mode, and the upper nut 11 is located above the upper conical block 10; the device also comprises a bottom plate 12, a purifying box 13, a connecting pipe 14, a supporting plate 16, four groups of supporting legs 17, a water pump 18, a water inlet pipe 19, a water outlet pipe 20, an air inlet pipe 23, a collecting hopper 24, an air collecting hopper 25 and an exhaust pipe 26, wherein the top end of the bottom plate 12 is connected with the bottom end of the purifying box 13, a cavity is arranged inside the purifying box 13, an exhaust port is arranged at the top end of the purifying box 13 and communicated with the cavity, the left output end of the connecting pipe 14 penetrates through the lower side of the right end of the purifying box 13 and extends into the cavity, a valve 15 is arranged on the connecting pipe 14 and is positioned at the right side of the purifying box 13, the left front side, the left rear side, the right front side and the right rear side of the bottom end of the supporting plate 16 are respectively connected with the top ends of the four groups of supporting legs 17, the bottom ends of the four groups of supporting legs 17 are all, the right output end of the water inlet pipe 19 penetrates through the right end of the purification box 13 and is connected with the left input end of the water pump 18, the top output end of the water pump 18 is connected with the bottom input end of the water discharge pipe 20, the left end of the water discharge pipe 20 is closed, the left end of the water discharge pipe 20 penetrates through the upper half area of the right end of the purification box 13 and extends into the cavity, the left end of the water discharge pipe 20 is connected with the left side wall of the cavity, a plurality of groups of water spray holes are arranged at the bottom end of the water discharge pipe 20 positioned in the cavity, a grid plate 21 is transversely arranged in the middle of the interior of the cavity, spherical fillers 22 are arranged at the top end of the grid plate 21, the spherical fillers 22 are positioned at the lower sides of the plurality of groups of water spray holes, the left input end of the air inlet pipe 23 is connected with the right output end of the collection hopper 24, the right output end of, the top output end of the air collecting hopper 25 is connected with the bottom input end of the exhaust pipe 26, and an air pump 27 is arranged inside the exhaust pipe 26; the lower nut and the lower conical block are sequentially arranged on the lead screw, the lower nut is rotated to a proper height, the petroleum drill rod joint is sleeved on the lead screw, the top end of the lower conical block is inserted into the petroleum drill rod joint, then the upper conical block and the upper nut are sequentially arranged, the bottom end of the upper conical block is inserted into the petroleum drill rod joint, the upper nut is rotated to enable the bottom end of the upper nut to be tightly attached to the top end of the upper conical block to fix the petroleum drill rod joint, the rotary table is rotated, the spray gun is connected with an external control device, the spray gun is opened, the circumferential outer wall of the petroleum drill rod joint is conveniently sprayed, and the use limitation is reduced; through opening the valve and through closing the valve after injecting appropriate amount of water in the cavity of connecting pipe to the purifying box, open the water pump, water passes through the inlet tube in proper order, water pump and drain pipe are sprayed to spherical packing by the multiunit hole for water spraying of drain pipe on, open the air pump, waste gas loops through to collect to fight and the intake pipe enters into to the cavity of purifying box in, and waste gas is carried to spherical packing and is adsorbed the purification by the water on the spherical packing in the inside of cavity from bottom to top, the air after the absorption is in proper order through the air collecting fill, air pump and blast pipe discharge to the external world, water top-down on the spherical packing falls to the bottom of cavity and accomplishes the water circuit circulation, it is outer to reduce the waste gas that the spraying process produced.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint, still include fixed plate 28, motor 29, delivery box 30 and row material pipe 31, the right-hand member of fixed plate 28 is connected with the left end of purifying box 13, the left side on fixed plate 28 top is connected with the bottom of motor 29, the bottom of delivery box 30 is connected with the right side on fixed plate 28 top, the inside of delivery box 30 is provided with the working chamber, the top of delivery box 30 is provided with puts in the mouth, and put in the mouth and communicate with each other with the working chamber, the right-hand member of motor 29 transversely is provided with the transmission shaft, be provided with helical blade on the transmission shaft, and helical blade is located the working chamber, the left part input of row material pipe 31 passes the downside of delivery box 30 right-hand member and stretches into and communicates with the inside of working chamber, and the right part output of row material pipe 31 passes the left end of purifying box 13 and stretches; through dropping into the foamer in the mouth into, open the motor, the motor drives transmission shaft and helical blade from the left hand right side and carries the foamer and put in to the inside of cavity through arranging the material pipe in the work intracavity, and the foamer mixes through the disturbance gassing with the water in the cavity, and the increase improves the absorption effect to spraying waste gas, improves the practicality.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint, still include workbin 32 and material pipe 33, the right-hand member of workbin 32 is connected with the left end of purifying box 13, the inside of workbin 32 is provided with the inner chamber, the top of workbin 32 is provided with the upper shed, the bottom of workbin 32 is provided with the under shed, and upper shed and under shed all communicate with the inner chamber, the under shed intercommunication is provided with the hopper, and the bottom output of hopper is connected with the top input of material pipe 33, the bottom output of material pipe 33 communicates with the input of delivery box 30; put into the foamer through the upper shed to the inside of inner chamber, conveniently store a quantitative foamer, some foamers pass through hopper and material pipe and carry to the inside of the working chamber of delivery box, conveniently to the working intracavity feed of delivery box, improve the convenience.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint still includes four groups of connecting rods 34, the top of four groups of connecting rods 34 is connected with the left front side, the left rear side, the right front side and the right rear side of workbin 32 bottom respectively, the bottom of four groups of connecting rods 34 is connected with the left front side, the left rear side, the right front side and the right rear side of fixed plate 28 top respectively; through setting up four groups of connecting rods, improve the bearing structure stability of fixed plate, improve and use the reliability.

The utility model relates to a spraying auxiliary device of an oil drill rod joint, the left front side, the left back side, the right front side and the right back side of the bottom end of a bottom plate 12 are all provided with universal wheels 35; through setting up four groups of universal wheels, conveniently remove bottom plate and purifying box etc. and be connected wholly, improve the adaptability.

The utility model discloses a spraying auxiliary assembly of oil drill pipe joint still includes threaded rod 36 and screwed pipe 37, the top of threaded rod 36 is connected with the right side of bottom plate 12 bottom, the bottom of threaded rod 36 inserts and spiral shell dress to the inside top of screwed pipe 37; break away from with ground through rotatory screwed pipe to two sets of universal wheels that are located the right side, conveniently connect wholly to bottom plate and purifying box etc. and carry on spacingly, improve the practicality.

The utility model discloses a spraying auxiliary device of oil drill pipe joint, also include four groups of steady lead screws 38 of adjusting, the bottom of four groups of landing legs 3 all is provided with the thread groove, and the top of four groups of steady lead screws 38 of adjusting is inserted respectively and spiral shell dress to the inside bottom of four groups of thread grooves; through the stable lead screw of rotatory four groups of regulations, conveniently adjust the holistic stability of connection such as roof and four groups of landing legs, improve the reliability of using.

In the auxiliary spraying equipment for the oil drill pipe joint, the bottom ends of the four groups of stabilizing screw rods 38 are provided with anti-skid blocks; through setting up four sets of non slipping spur, reduce four sets and adjust the emergence of the circumstances of steady lead screw subaerial slip, improve stability.

The utility model relates to a spraying auxiliary device of oil drill pipe joint, when it works, at first install lower nut and lower toper piece on the lead screw and rotate lower nut to suitable height in proper order, suit oil drill pipe joint on the lead screw and make the top of lower toper piece insert the inside of oil drill pipe joint, then install toper piece and upper nut in proper order and make the bottom of upper toper piece insert the inside of oil drill pipe joint, and rotate upper nut and make the bottom of upper nut and the top of upper toper piece paste tightly and fix oil drill pipe joint, the rotary table is rotated and the spray gun is connected with external controlling means and the spray gun is opened, the circumference outer wall of oil drill pipe joint is sprayed, then open the valve and close the valve after injecting right amount water into the cavity of purifying box through the connecting pipe, open the water pump, water passes through the inlet tube in proper order, water pump and drain pipe spray water to spherical packing by the multiunit hole of drain pipe, after that drop into the foamer in the mouth to putting in, open the motor, the motor drives transmission shaft and helical blade from the left hand right side and carries the foamer and put in to the inside of cavity through arranging the material pipe in the working chamber, the foamer mixes through the disturbance gassing with the water in the cavity, increase and spraying waste gas's area of contact, the absorption effect to spraying waste gas is improved, open the air pump, waste gas loops through to collect to fight and the intake pipe gets into to the purifying box in the cavity, and waste gas is carried to globular filler and is adsorbed the purification by the water on the globular filler from bottom to top in the inside of cavity, the air after the absorption is in proper order through the air collecting fill, air pump and blast pipe discharge to the external world, water top-down on the globular filler falls to the.

The installation mode, the connection mode or the arrangement mode of the spraying auxiliary equipment for the oil drill rod joint of the utility model are common mechanical modes, and the spraying auxiliary equipment can be implemented as long as the beneficial effects can be achieved; the foaming agent is a biodegradable environment-friendly foaming agent; the utility model discloses a spraying auxiliary assembly's of oil drill pipe joint water pump, air pump and motor are purchase on the market, and this industry technical staff only need according to its subsidiary specification install and operate can.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The spraying auxiliary equipment for the petroleum drill rod joint comprises a spray gun (1), a top plate (2) and four groups of supporting legs (3), wherein the spray gun (1) is positioned above the top plate (2), and the left front side, the left rear side, the right front side and the right rear side of the bottom end of the top plate (2) are respectively connected with the top ends of the four groups of supporting legs (3); the device is characterized by further comprising a rotary table (4), a rotary shaft (5), a screw rod (7), a lower nut (8), a lower conical block (9), an upper conical block (10) and an upper nut (11), wherein the middle part of the bottom end of the rotary table (4) is connected with the top end of the rotary shaft (5), the middle part of the top end of a top plate (2) is provided with a placing groove, a ball bearing (6) is arranged in the placing groove, the bottom end of the screw rod (7) is connected with the middle part of the top end of the rotary table (4), the lower nut (8) is sleeved on the screw rod (7) in a threaded manner, the middle part of the lower conical block (9) is provided with a first through hole which penetrates up and down, the top end of the screw rod (7) penetrates through the first through hole and extends out of the top end of the lower conical block (9), the bottom end of the lower conical block (9) is contacted with the top end of the lower nut (8), the middle part of the upper conical block (10) is provided with a second through, the upper nut (11) is sleeved on the screw rod (7) in a threaded manner, and the upper nut (11) is positioned above the upper conical block (10); the device also comprises a bottom plate (12), a purification box (13), a connecting pipe (14), a supporting plate (16), four groups of supporting legs (17), a water pump (18), a water inlet pipe (19), a water outlet pipe (20), an air inlet pipe (23), a collecting hopper (24), an air collecting hopper (25) and an air outlet pipe (26), wherein the top end of the bottom plate (12) is connected with the bottom end of the purification box (13), a cavity is arranged inside the purification box (13), an air outlet is formed in the top end of the purification box (13) and communicated with the cavity, the left output end of the connecting pipe (14) penetrates through the lower side of the right end of the purification box (13) and extends into the cavity, a valve (15) is arranged on the connecting pipe (14), the valve (15) is positioned on the right side of the purification box (13), the left front side, the left rear side, the right front side and the right rear side of the bottom end, the bottom ends of the four groups of supporting legs (17) are all connected with the top end of the bottom plate (12), the bottom ends of the water pumps (18) are connected with the top end of the supporting plate (16), the bottom input end of the water inlet pipe (19) extends into the bottom of the cavity, the right output end of the water inlet pipe (19) penetrates through the right end of the purifying box (13) and is connected with the left input end of the water pump (18), the top output end of the water pump (18) is connected with the bottom input end of the water drainage pipe (20), the left end of the water drainage pipe (20) is sealed, the left end of the water drainage pipe (20) penetrates through the upper half area of the right end of the purifying box (13) and extends into the cavity, the left end of the water drainage pipe (20) is connected with the left side wall of the cavity, the bottom end of the water drainage pipe (20) positioned in the cavity is provided with a plurality of groups of water spray holes, spherical filler (22) are located the downside of multiunit hole for water spraying, the left part input of intake pipe (23) is connected with the right part output of collecting fill (24), the right part output of intake pipe (23) passes the downside of purifying box (13) left end and stretches into the inside to the cavity, the bottom input of air collecting fill (25) and the gas vent intercommunication of purifying box (13), the top output of air collecting fill (25) is connected with the bottom input of blast pipe (26), the inside of blast pipe (26) is provided with air pump (27).

2. The auxiliary spraying equipment for the oil drill pipe joint as claimed in claim 1, further comprising a fixed plate (28), a motor (29), a conveying box (30) and a discharging pipe (31), wherein the right end of the fixed plate (28) is connected with the left end of the purifying box (13), the left side of the top end of the fixed plate (28) is connected with the bottom end of the motor (29), the bottom end of the conveying box (30) is connected with the right side of the top end of the fixed plate (28), a working chamber is arranged inside the conveying box (30), a feeding port is arranged at the top end of the conveying box (30) and communicated with the working chamber, a transmission shaft is transversely arranged at the right end of the motor (29), helical blades are arranged on the transmission shaft and positioned in the working chamber, the left input end of the discharging pipe (31) penetrates through the lower side of the right end of the conveying box (30) and extends into and communicates with the inside of the working chamber, and the right output end of the discharge pipe (31) passes through the left end of the purification box (13) and extends into the chamber.

3. The auxiliary spraying equipment for the oil drill pipe joint as claimed in claim 2, further comprising a material box (32) and a material pipe (33), wherein the right end of the material box (32) is connected with the left end of the purifying box (13), an inner cavity is arranged inside the material box (32), an upper opening is arranged at the top end of the material box (32), a lower opening is arranged at the bottom end of the material box (32), the upper opening and the lower opening are communicated with the inner cavity, the lower opening is communicated with the material box, the bottom output end of the material box is connected with the top input end of the material pipe (33), and the bottom output end of the material pipe (33) is communicated with the feeding opening of the conveying box (30).

4. The auxiliary spraying apparatus for the oil drill pipe joint as claimed in claim 3, further comprising four sets of connecting rods (34), wherein the top ends of the four sets of connecting rods (34) are connected to the front left side, the rear left side, the front right side and the rear right side of the bottom end of the hopper (32), respectively, and the bottom ends of the four sets of connecting rods (34) are connected to the front left side, the rear left side, the front right side and the rear right side of the top end of the fixing plate (28), respectively.

5. The auxiliary spraying apparatus for the oil drill joint as claimed in claim 4, wherein universal wheels (35) are provided on the left front side, the left rear side, the right front side and the right rear side of the bottom end of the base plate (12).

6. The spray coating auxiliary equipment of the oil drill joint as claimed in claim 5, further comprising a threaded rod (36) and a threaded pipe (37), wherein the top end of the threaded rod (36) is connected with the right side of the bottom end of the base plate (12), and the bottom end of the threaded rod (36) is inserted and screwed into the inside of the top end of the threaded pipe (37).

7. The auxiliary spraying equipment for the oil drill pipe joint as claimed in claim 6, further comprising four sets of stabilizing lead screws (38), wherein the bottom ends of the four sets of supporting legs (3) are provided with thread grooves, and the top ends of the four sets of stabilizing lead screws (38) are respectively inserted into and screwed into the bottom ends of the four sets of thread grooves.

8. The auxiliary spraying equipment for the oil drill pipe joint as claimed in claim 7, wherein the bottom ends of the four groups of the stabilizing screw rods (38) are provided with anti-skid blocks.