CN118565785A - Detection equipment for small-caliber stainless steel pipe fitting - Google Patents

Abstract

The application relates to the technical field of detection equipment, in particular to detection equipment for a small-caliber stainless steel pipe fitting. Including the test box, the inside rotation of test box is connected with a test section of thick bamboo, sets up the opening on the test section of thick bamboo, and the both ends sliding connection of test section of thick bamboo has a push tube, and push tube inner is connected with the sealing plug, and first through-hole is seted up at the sealing plug center, and the equal sealing sliding connection of push tube outer end has a test tube, and one of them test tube is connected with the pressure pump, and another test tube is connected with pressure sensor, is provided with the drive assembly who drives the push tube and remove on the test box. According to the application, the two pushing pipes are driven to move towards the direction of closing the pipe fitting by the driving component, so that the sealing plugs can be plugged at the two ends of the pipe fitting, and after the test is finished, the sealing plugs can be separated from the pipe fitting only by driving the two pushing pipes to move towards the direction away from the pipe fitting by the driving component, so that the automatic loading and unloading of the stainless steel pipe fitting is realized, and the test efficiency of the stainless steel pipe fitting is improved.

Description

Detection equipment for small-caliber stainless steel pipe fitting

Technical Field

The invention relates to the technical field of detection equipment, in particular to detection equipment for a small-caliber stainless steel pipe fitting.

Background

The small-caliber stainless steel pipe is a pipe made of stainless steel with a relatively small pipe diameter, and plays roles of connection, steering, branching and the like in various pipeline systems so as to realize smooth transportation of fluid. The pipe fitting is widely applied to the fields of petrochemical industry, medicine and health, food and beverage, machine manufacturing and the like, and meets the pipeline connection requirements under different working conditions.

In order to ensure stable operation of a pipeline system, dangerous situations such as pipe fitting breakage, leakage and the like caused by overhigh pressure in the use process are prevented, so that the small-caliber stainless steel pipe fitting needs to be subjected to pressure resistance test, in the related technology, when the stainless steel pipe fitting is subjected to pressure resistance test, a worker is required to manually seal the stainless steel pipe fitting on a testing device, the worker still needs to manually detach after the test is completed, the disassembly and assembly process is time-consuming and labor-consuming, the labor intensity of the worker is increased, the testing efficiency of the stainless steel pipe fitting is also influenced, and the test of the stainless steel pipe fitting in a large batch is not facilitated.

Therefore, how to realize automatic loading and unloading of the stainless steel pipe fitting and improve the testing efficiency of the stainless steel pipe fitting are the problems to be solved by the technicians in the field at present.

Disclosure of Invention

The invention provides detection equipment for a small-caliber stainless steel pipe fitting, which aims to realize automatic loading and unloading of the stainless steel pipe fitting and improve the test efficiency of the stainless steel pipe fitting.

The technical scheme of the invention is as follows:

The invention provides detection equipment for small-caliber stainless steel pipe fittings, which comprises a test box, wherein a test barrel is rotationally connected to the inside of the test box, an opening for receiving the pipe fittings is formed in the test barrel, push pipes are slidably connected to the inside of two ends of the test barrel, sealing plugs are fixedly connected to one ends of the push pipes positioned in the test barrel, a first through hole communicated with the push pipes is formed in the center of each sealing plug, test pipes are hermetically and slidably connected to one ends of the push pipes, far away from the test barrel, of the test pipes, a pressure pump is connected to one end of the other test pipe, far away from the push pipes, of the test pipes, and a driving assembly for driving the push pipes to move is arranged on the test box.

Through adopting above-mentioned technical scheme, place the pipe fitting through the opening inside the test section of thick bamboo, rethread drive assembly drive two push away the pipe and move to the direction of drawing close the pipe fitting just can make the sealing plug shutoff at the both ends of pipe fitting, rethread force pump is with the test liquid with the pressure of settlement through test tube and push away pipe and sealing plug carry to the pipe fitting inside, rethread force sensor detects the inside pressure variation of pipe fitting, can judge whether the withstand voltage test of pipe fitting is qualified, after accomplishing the test, only need two again through drive assembly drive push away the pipe to keeping away from the direction removal of pipe fitting just can make the sealing plug leave the pipe fitting, thereby realized the automatic handling to stainless steel pipe fitting, improved the test efficiency to stainless steel pipe fitting.

Further, the inner side surface of the test tube is provided with a driving groove corresponding to the push tube, two ends of the driving groove are straight line parts consistent with the length direction of the push tube, the straight line parts deviate 180 degrees along the circumferential direction of the push tube, curve parts are smoothly and excessively connected between the straight line parts, the outer side surface of the push tube is fixedly connected with a driving column corresponding to the driving groove, and the driving column is slidably inserted into the driving groove.

Through adopting above-mentioned technical scheme, when drive assembly drive push away the pipe and remove, the drive post in push away the pipe outside will pass through the curved portion of drive groove drives the test section of thick bamboo rotates 180, when the drive post is located be close to the test section of thick bamboo the inside of straight line portion, the last opening of test section of thick bamboo will be oriented the upper end of test box, namely when drive assembly drive two push away the pipe and make the sealing plug shutoff at the both ends of pipe fitting the opening will be up, drive assembly drive two push away the pipe and make the sealing plug leave when pipe fitting, the opening will be down, thereby make the pipe fitting falls automatically under the action of gravity inside the test section of thick bamboo. Therefore, the disassembly and the removal of the pipe fitting can be automatically completed in the working process through ingenious structural design.

Further, the drive assembly comprises a stepping motor, the stepping motor is fixedly arranged on the test box, a screw is connected to the stepping motor in a transmission mode, thread grooves are formed in two end portions of the screw, a pushing plate in threaded connection with the thread grooves is arranged on the screw, and the pushing plate is correspondingly fixedly connected with the pushing pipe.

Through adopting above-mentioned technical scheme, utilize step motor to drive when the screw rod rotates, the screw thread groove of seting up of screw rod both ends portion will drive in step the push pedal removes, thereby has realized the push pipe is synchronous to be close to each other or the direction removal that keeps away from each other, and then realizes to the automatic installation and the dismantlement of pipe fitting.

Further, the top fixedly connected with of test box is equipped with the hopper, correspond on the test box the hopper sliding connection that prepares the hopper has first charge-in board and second charge-in board, first charge-in board with second charge-in board parallel arrangement, first charge-in board with distance between the second charge-in board is D, the diameter of pipe fitting is D, satisfies D < D < 2D, first charge-in board with the second charge-in board runs through the outer tip fixedly connected with connecting plate of test box, first charge-in board to the extreme position of test box outer slip seted up with the first charge-in channel of preparing the hopper alignment, the second charge-in board to the second charge-in channel of alignment with the opening has been seted up to the extreme position of test box inner slip, be connected with electric putter between the connecting plate with the test box.

Through adopting above-mentioned technical scheme, can promote through electric putter the connecting plate drives simultaneously first feed plate with the second feed plate removes, works as first feed plate to when the test box slides to extreme position outward, the inside one of material bucket will be equipped with the pipe fitting will pass through first feed channel, get into first feed plate with between the second feed plate, works as the second feed plate to when the test box slides to extreme position, first feed plate with one between the second feed plate the pipe fitting will pass through second feed channel gets into to the opening inside, and this design can realize the automatic feeding of pipe fitting.

Further, the bottom fixedly connected with of the backup hopper two limit plates that symmetry set up, correspond on the limit plate first feed plate with the slot has been seted up to the second feed plate, first feed plate with the second feed plate passes through dodge the slot with limit plate sliding connection.

Through adopting above-mentioned technical scheme, utilize the limiting plate to be in the automatic feed in-process of pipe fitting is spacing to the pipe fitting, can guarantee accuracy and reliability when the pipe fitting passes through first feed channel with second feed channel.

Further, a discharging channel is formed in the lower portion of the testing cylinder and penetrates through two side faces of the testing cylinder, a discharging plate is connected to the inside of the testing cylinder in a rotating mode corresponding to the discharging channel, a driving motor is fixedly connected to one end, away from the pressure pump, of the testing cylinder, and an output shaft of the driving motor penetrates through the rotating center of the discharging plate and is fixedly connected with the discharging plate.

Through adopting above-mentioned technical scheme, utilize driving motor can drive the flitch rotates, works as the flitch rotates to first direction, follow the inside pipe fitting that falls out of test cylinder will be followed under the action of gravity the flitch to the play flow path that corresponds first direction, works as the flitch rotates to the second direction, follow the inside pipe fitting that falls out of test cylinder will be followed under the action of gravity the flitch to correspond the flow path of second direction falls out, can be effectual like this to the involution pipe fitting and disqualified the pipe fitting distinguish.

Furthermore, the collecting boxes are arranged outside the test boxes corresponding to the discharging channels.

Through adopting above-mentioned technical scheme, through collect the box can follow the pipe fitting that the discharge channel falls out is collected, and the staff only need clear up on time and shift can.

Further, the detection equipment for the small-caliber stainless steel pipe fitting further comprises a mounting box, the top of the mounting box is connected with a mounting cover, the test box is fixedly mounted on the mounting cover, and the collection box is slidably mounted on the mounting box.

Through adopting above-mentioned technical scheme, utilize the mounting box to with the testing box with collect the box and install, both can increase the testing box with collect the stability of box in the course of the work, can protect the pipe fitting of accomplishing the detection again.

Further, the detection equipment for the small-caliber stainless steel pipe fitting further comprises a controller, wherein the controller is respectively and electrically connected with the pressure pump, the pressure sensor, the stepping motor, the electric push rod and the driving motor.

Through adopting above-mentioned technical scheme, utilize the controller can be right the force pump, pressure sensor step motor electric putter the driving motor carries out automatic control, can accomplish the detection to the pipe fitting voluntarily, has reduced staff's intensity of labour, has improved the automation and intelligent degree of pipe fitting detection.

Further, the input end of the pressure pump is connected with a water tank, and the bottom of the test box is communicated with the water tank.

Through adopting above-mentioned technical scheme, utilize the water tank can store the test solution that is used for the test, the inside test solution that persists of pipe fitting after the completion test simultaneously will flow into the bottom of test box, through the intercommunication between the bottom of test box and the water tank, can be convenient retrieve the test solution to the water tank inside again and carry out the circulation test.

The beneficial effects are achieved:

1. according to the application, the two pushing pipes are driven to move towards the direction of closing the pipe fitting by the driving component, so that the sealing plugs can be plugged at the two ends of the pipe fitting, then the pressure pump is used for conveying test liquid into the pipe fitting through the test tube, the pushing pipes and the sealing plugs at set pressure, then the pressure sensor is used for detecting the pressure change in the pipe fitting, and then whether the pressure resistance test of the pipe fitting is qualified can be judged.

2. According to the application, through the matched transmission of the driving column and the driving groove, when the driving component drives the push pipes to move, the test cylinder is driven to turn over, when the driving component drives the two push pipes to enable the sealing plugs to be plugged at two ends of the pipe fitting, the opening faces upwards, and when the driving component drives the two push pipes to enable the sealing plugs to leave the pipe fitting, the opening faces downwards, so that the pipe fitting automatically falls out of the test cylinder under the action of gravity. In this way, the pipe fitting can be automatically assembled and disassembled in the working process through the ingenious structural design.

3. According to the application, the controller can be used for automatically controlling the pressure pump, the pressure sensor, the stepping motor, the electric push rod and the driving motor through program setting, so that the pipe fitting detection can be automatically completed, the labor intensity of workers is reduced, and the automation and the intelligent degree of pipe fitting detection are improved.

Drawings

Fig. 1 is a schematic overall structure of one embodiment of the present invention.

Fig. 2 is a schematic diagram of the internal structure of one embodiment of the present invention.

Fig. 3 is a schematic exploded view of one embodiment of the present invention.

Fig. 4 is a schematic cross-sectional structure of one embodiment of the present invention.

FIG. 5 is a schematic view of the cross-sectional structure of the A-A direction in FIG. 4.

FIG. 6 is an enlarged schematic view of the structure of the portion I in FIG. 5.

FIG. 7 is a schematic view showing a sectional structure in the direction B-B in FIG. 4.

Fig. 8 is an enlarged schematic view of the structure of the part ii in fig. 7.

Fig. 9 is an enlarged schematic view of the structure of the third part in fig. 7.

Detailed Description

In order to facilitate understanding of the invention by those skilled in the art, a specific embodiment of the invention is described below with reference to the accompanying drawings.

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying 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 thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It will be understood that when an element is referred to as being "mounted" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

The invention provides detection equipment for a small-caliber stainless steel pipe fitting.

As shown in fig. 1 and 2, an embodiment of the present invention includes a test box 100, the test box 100 is manufactured by adopting a steel plate through a bending and welding process, the inside of the test box 100 is rotatably connected with a test tube 200, two ends of the test tube 200 extend out of two ends of the test box 100, an opening 201 is formed on an outer surface of the test tube 200 located inside the test box 100, a pipe 300 can enter the inside of the test tube 200 through the opening 201, the test tube 200 receives the pipe 300, two ends of the test tube 200 are both slidingly connected with a push tube 400, one end of the push tube 400 located inside the test tube 200 is fixedly connected with a sealing plug 500, the sealing plug 500 is made of a rubber material, a first through hole 501 is formed in the center of the sealing plug 500, the first through hole 501 is communicated with the push tube 400, one end of the push tube 400 away from the test tube 200 is hermetically slidingly connected with a test tube 600, one end of the test tube 600 away from the push tube 400 is connected with a pressure pump 700, one end of the other test tube 600 away from the push tube 400 is connected with a pressure sensor 800, a driving assembly 900 is arranged on the test box 100, and the driving assembly 900 is capable of driving the two push tubes 900 to move through the driving assembly.

As shown in fig. 2 and 3, in a specific embodiment of the present application, the driving assembly 900 includes a stepper motor 901, the stepper motor 901 is fixedly installed on the test box 100, an output shaft of the stepper motor 901 is in transmission connection with a screw 902 through a gear transmission manner, two ends of the screw 902 are provided with threaded grooves 903, two push plates 904 in threaded connection with the threaded grooves 903 are correspondingly provided on the screw 902, and the two push plates 904 are respectively and fixedly connected with the two push pipes 400. When the stepping motor 901 is utilized to drive the screw 902 to rotate, the thread grooves 903 formed at the two ends of the screw 902 synchronously drive the push plate 904 to move, so that the push pipes 400 synchronously move towards or away from each other, and the automatic installation and the disassembly of the pipe fitting 300 are realized.

As shown in fig. 5 and 6, in a specific embodiment of the present application, the inner side of the test tube 200 corresponds to the push tube 400 and is provided with the driving groove 201, two ends of the driving groove 201 are straight line portions 2011 consistent with the length direction of the push tube 400, the straight line portions 2011 deviate by 180 ° along the circumferential direction of the push tube 400, curve portions 2012 are smoothly and excessively connected between the straight line portions 2011, the outer side of the push tube 400 corresponds to the driving groove 201 and is fixedly connected with the driving post 401, and the driving post 401 is slidably inserted into the driving groove 201. When the driving assembly 900 drives the push tube 400 to move, the driving column 401 at the outer side of the push tube 400 drives the test cylinder 200 to rotate 180 ° through the curved portion 2012 of the driving groove 201, when the driving column 401 is located in the linear portion 2011 close to the test cylinder 200, the opening 201 on the test cylinder 200 faces the upper end of the test box 100, that is, when the driving assembly 900 drives the two push tubes 400 to seal the sealing plugs 500 at two ends of the pipe fitting 300, the opening 201 faces upwards, and when the driving assembly 900 drives the two push tubes 400 to separate the sealing plugs 500 from the pipe fitting 300, the opening 201 faces downwards, so that the pipe fitting 300 automatically falls out of the interior of the test cylinder 200 under the action of gravity. Thus, the disassembly and the removal of the pipe fitting 300 can be automatically completed in the working process through the ingenious structural design.

As shown in fig. 7 and 8, in a specific embodiment of the present application, a preparation hopper 101 is fixedly connected to the top of a test box 100, a first feeding plate 102 and a second feeding plate 103 are slidably connected to the test box 100 corresponding to the preparation hopper 101, the first feeding plate 102 and the second feeding plate 103 are arranged in parallel, a distance between the first feeding plate 102 and the second feeding plate 103 is D, a diameter of a pipe 300 is D, D < 2D is satisfied, a connecting plate 104 is fixedly connected to an outer end portion of the first feeding plate 102 and the second feeding plate 103 penetrating through the test box 100, a first feeding channel 105 aligned with the preparation hopper 101 is provided at a limit position where the first feeding plate 102 slides out of the test box 100, a second feeding channel 106 aligned with an opening 201 is provided at a limit position where the second feeding plate 103 slides into the test box 100, and an electric push rod 107 is connected between the connecting plate 104 and the test box 100. The connecting plate 104 can be pushed by the electric push rod 107 to drive the first feeding plate 102 and the second feeding plate 103 to move at the same time, when the first feeding plate 102 slides out of the test box 100 to the limit position, a pipe 300 in the material preparation bucket 101 enters between the first feeding plate 102 and the second feeding plate 103 through the first feeding channel 105, and when the second feeding plate 103 slides into the test box 100 to the limit position, a pipe 300 between the first feeding plate 102 and the second feeding plate 103 enters into the opening 201 through the second feeding channel 106.

As shown in fig. 8, in a specific embodiment of the present application, two symmetrically arranged limiting plates 108 are fixedly connected to the bottom of the material preparation bucket 101, and avoidance grooves 109 are formed on the limiting plates 108 corresponding to the first feeding plate 102 and the second feeding plate 103, and the first feeding plate 102 and the second feeding plate 103 are slidably connected to the limiting plates 108 through the avoidance grooves 109. The accuracy and reliability of the pipe 300 passing through the first and second feed passages 105 and 106 can be ensured by limiting the pipe 300 by the limiting plate 108 during the automatic feeding of the pipe 300.

As shown in fig. 7 and 9, in a specific embodiment of the present application, a discharging channel 301 is formed below the testing cylinder 200 on the testing box 100, the discharging channel 301 penetrates through two sides of the testing box 100, a discharging plate 302 is rotatably connected to the interior of the testing box 100 corresponding to the discharging channel 301, one end, away from the pressure pump 700, of the testing box 100 is fixedly connected with a driving motor 303, and an output shaft of the driving motor 303 penetrates through a rotation center of the discharging plate 302 and is fixedly connected with the discharging plate 302. When the discharge plate 302 rotates in the first direction, the pipe 300 falling from the inside of the test cylinder 200 falls along the discharge plate 302 to the discharge channel 301 corresponding to the first direction under the action of gravity, and when the discharge plate 302 rotates in the second direction, the pipe 300 falling from the inside of the test cylinder 200 falls along the discharge plate 302 to the discharge channel 301 corresponding to the second direction under the action of gravity, so that the qualified pipe 300 and the unqualified pipe 300 can be effectively distinguished.

As shown in fig. 3 and 7, in a specific embodiment of the present application, the collection box 304 is disposed on the exterior of the test cartridge 100 corresponding to the discharge channel 301. The pipe fitting 300 falling out of the discharging channel 301 can be collected through the collecting box 304, and the staff only needs to clean and transfer on time.

In a specific embodiment of the present application, as shown in fig. 3 and 7, a detection apparatus for small-caliber stainless steel pipe fittings further includes a mounting box 110, a mounting cover 111 is connected to the top of the mounting box 110, the test box 100 is fixedly mounted on the mounting cover 111, and the collection box 304 is slidably mounted on the mounting box 110. The mounting box 110 is used for mounting the test box 100 and the collection box 304, so that the stability of the test box 100 and the collection box 304 in the working process can be increased, and the pipe fitting 300 for completing detection can be protected.

As shown in fig. 3 and 4, in a specific embodiment of the present application, a detection apparatus for a small-caliber stainless steel pipe further includes a controller 120, where the controller 120 is electrically connected to the pressure pump 700, the pressure sensor 800, the stepper motor 901, the electric push rod 107, and the driving motor 303, respectively. The controller 120 can automatically control the pressure pump 700, the pressure sensor 800, the stepping motor 901, the electric push rod 107 and the driving motor 303 through a set program, so that the pipe fitting 300 is automatically assembled, disassembled, inspected and classified, the labor intensity of workers is reduced, and the degree of automation and intellectualization of the pipe fitting 300 inspection is improved.

As shown in fig. 3 and 4, in a specific embodiment of the present application, a water tank 701 is connected to an input end of a pressure pump 700, and a bottom of the test cartridge 100 is in communication with the water tank 701. The water tank 701 can be used for storing the test liquid for testing, meanwhile, the test liquid reserved in the pipe fitting 300 after the test is finished can flow into the bottom of the test box 100, and the test liquid can be conveniently and rapidly recycled to the water tank 701 for the circulation test through the communication between the bottom of the test box 100 and the water tank 701.

The working principle of the invention is as follows:

When the push pipe 400 moves towards the direction of the pipe fitting 300, the sealing plugs 500 can be blocked at the two ends of the pipe fitting 300, the pressure pump 700 is used for conveying test liquid to the inside of the pipe fitting 300 through the test pipe 600, the push pipe 400 and the sealing plugs 500 at set pressure, the pressure sensor 800 is used for detecting pressure change in the pipe fitting 300, whether the pressure resistance test of the pipe fitting 300 is qualified or not can be judged, after the test is finished, the sealing plugs 500 can be separated from the pipe fitting 300 only by driving the two push pipes 400 to move towards the direction far away from the pipe fitting 300 through the driving assembly 900, so that the automatic assembly and disassembly of the stainless steel pipe fitting are realized, and the test efficiency of the stainless steel pipe fitting is improved.

Meanwhile, when the driving assembly 900 drives the push tube 400 to move, the driving column 401 at the outer side of the push tube 400 drives the test cylinder 200 to turn 180 ° through the curved part 2012 of the driving groove 201, when the driving column 401 is located inside the straight line part 2011 close to the test cylinder 200, the opening 201 on the test cylinder 200 faces the upper end of the test box 100, that is, when the driving assembly 900 drives the two push tubes 400 to enable the sealing plugs 500 to be blocked at two ends of the pipe fitting 300, the opening 201 faces upwards, and when the driving assembly 900 drives the two push tubes 400 to enable the sealing plugs 500 to be separated from the pipe fitting 300, the opening 201 faces downwards, so that the pipe fitting 300 automatically falls out of the inside of the test cylinder 200 under the action of gravity. Thus, the disassembly and the removal of the pipe fitting 300 can be automatically completed in the working process through the ingenious structural design.

The embodiments of the present invention described above do not limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention as set forth in the appended claims.

Claims (10)

1. Detection equipment for small-bore stainless steel pipe fitting, its characterized in that: including test box (100), the inside rotation of test box (100) is connected with test tube (200), set up on test tube (200) and be used for accepting opening (201) of pipe fitting (300), the inside equal sliding connection in both ends of test tube (200) has ejector sleeve (400), ejector sleeve (400) are located the inside equal fixedly connected with sealing plug (500) of one end of test tube (200), sealing plug (500) center set up with first through-hole (501) of ejector sleeve (400) intercommunication, ejector sleeve (400) keep away from the equal sealing sliding connection of one end of test tube (200) has test tube (600), and one of them test tube (600) is kept away from the one end of ejector sleeve (400) is connected with pressure pump (700), and the other one end that test tube (600) kept away from ejector sleeve (400) is connected with pressure sensor (800), be provided with the drive on test box (100) ejector sleeve (400) removal drive assembly (900).

2. The detection apparatus for small-caliber stainless steel pipe fittings as claimed in claim 1, wherein: the inner side of the test barrel (200) corresponds to the push tube (400) and is provided with a driving groove (201), two end parts of the driving groove (201) are linear parts (2011) consistent with the length direction of the push tube (400), the linear parts (2011) deviate 180 degrees along the circumferential direction of the push tube (400), curve parts (2012) are smoothly and excessively connected between the linear parts (2011), the outer side of the push tube (400) corresponds to the driving groove (201) and is fixedly connected with a driving column (401), and the driving column (401) is slidably inserted into the driving groove (201).

3. The detection apparatus for small-caliber stainless steel pipe fittings as claimed in claim 1, wherein: the driving assembly (900) comprises a stepping motor (901), the stepping motor (901) is fixedly arranged on the test box (100), a screw (902) is connected to the stepping motor (901) in a transmission mode, screw grooves (903) are formed in two end portions of the screw (902), a push plate (904) in threaded connection with the screw grooves (903) is arranged on the screw (902), and the push plate (904) is correspondingly fixedly connected with the push pipe (400).

4. A small-caliber stainless steel pipe fitting detection apparatus according to claim 3, wherein: the top fixedly connected with of test box (100) is equipped with hopper (101), correspond on test box (100) hopper (101) sliding connection has first feed plate (102) and second feed plate (103), first feed plate (102) with second feed plate (103) parallel arrangement, first feed plate (102) with distance between second feed plate (103) is D, the diameter of pipe fitting (300) is D, satisfies D < 2D, first feed plate (102) with second feed plate (103) run through outer end fixedly connected with connecting plate (104) of test box (100), first feed plate (102) to extreme position that test box (100) outside slided is offered with first feed channel (105) of being aligned with hopper (101), second feed plate (103) to extreme position that test box (100) slided is offered and is aligned with second feed channel (106) of opening (201), between connecting plate (107) and test box (100).

5. The detection apparatus for small-caliber stainless steel pipe fittings as claimed in claim 5, wherein: the bottom of the material preparation hopper (101) is fixedly connected with two symmetrically-arranged limiting plates (108), the limiting plates (108) are correspondingly provided with avoidance grooves (109) on the first feeding plates (102) and the second feeding plates (103), and the first feeding plates (102) and the second feeding plates (103) are in sliding connection with the limiting plates (108) through the avoidance grooves (109).

6. The detection apparatus for small-caliber stainless steel pipe fittings as claimed in claim 4, wherein: the test box (100) is located below the test cylinder (200) and is provided with a discharge channel (301), the discharge channel (301) penetrates through two side surfaces of the test box (100), the discharge channel (301) is correspondingly connected with a discharge plate (302) in a rotating mode in the test box (100), one end, away from the pressure pump (700), of the test box (100) is fixedly connected with a driving motor (303), and an output shaft of the driving motor (303) penetrates through the rotation center of the discharge plate (302) and is fixedly connected with the discharge plate (302).

7. The detection apparatus for small-caliber stainless steel pipe fittings as claimed in claim 6, wherein: and collecting boxes (304) are respectively arranged outside the test boxes (100) corresponding to the discharging channels (301).

8. The detection apparatus for small-caliber stainless steel pipe fittings as claimed in claim 7, wherein: still include install bin (110), install the top of bin (110) and be connected with installation lid (111), test box (100) fixed mounting is in on installation lid (111), collection box (304) slidable mounting is in on install bin (110).

9. The detection apparatus for small-caliber stainless steel pipe fittings as claimed in claim 6, wherein: the device also comprises a controller (120), wherein the controller (120) is respectively electrically connected with the pressure pump (700), the pressure sensor (800), the stepping motor (901), the electric push rod (107) and the driving motor (303).

10. The detection apparatus for small-caliber stainless steel pipe fittings as claimed in any one of claims 1 to 9, wherein: the input end of the pressure pump (700) is connected with a water tank (701), and the bottom of the test box (100) is communicated with the water tank (701).