Leak detection tool for electronic endoscope hose
Technical Field
The invention relates to the technical field of endoscope detection, in particular to a leak detection tool for an electronic endoscope hose.
Background
Medical electronic flexible endoscopes are known in the industry as waterproof medical instruments, and in order to improve yield in the manufacturing process, a plurality of sealing tests are generally performed on the endoscopes when the endoscopes are made into semi-finished products and finished products, wherein precise electronic devices and precise mechanical structures are concentrated on an insertion part of the endoscope, and a tight leak detection test is necessary.
But the important junction of endoscope hose, inner structure is complicated, and semi-manufactured goods junction leak hunting is difficult to realize to the leak hunting point has the withstand voltage seepage requirement of specific pressure value, so the endoscope leak hunting just can all leak hunting after the finished product equipment more, need dismantle the mirror body and check for the leak hunting point, and efficiency is very low, and current leak hunting device is when leaking to the endoscope hose, and the sealing of endoscope hose junction is relatively poor, and the gas leakage is difficult to discover, influences the test result to the endoscope hose.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an electronic endoscope hose leakage detection tool, foam is sprayed to the joint of the endoscope hose through the spraying assembly, the joint is ensured to be sealed, and further the side leakage is carried out on the endoscope hose, so that the problem in the background art is solved.
The technical scheme includes that the electronic endoscope hose leakage detection tool comprises a frame, wherein two ends of the frame are fixedly connected with an air inlet connector and an expansion plug respectively, an endoscope hose is connected between the air inlet connector and the expansion plug, an air inlet valve is connected to the air inlet connector, the expansion plug is used for plugging one end of the endoscope hose, air enters the endoscope hose from the air inlet connector, and a foam spraying assembly is used for spraying foam at the joint of the endoscope hose, the air inlet connector and the expansion plug.
As a preferable technical scheme of the invention, the foam spraying assembly comprises a connecting frame, wherein two ends of the connecting frame are symmetrically and fixedly connected with a pair of annular frames, one end of each annular frame is provided with an opening, an annular sliding hole is formed in each annular frame, a sliding block capable of moving in a reciprocating manner is connected to the annular sliding hole in a sliding manner, a spraying pipe is fixedly connected to the sliding block, and foam is uniformly sprayed to the joint of the endoscope hose through the spraying pipe when the sliding block slides from one end to the other end of the annular sliding hole.
As a preferable technical scheme of the invention, the foam compression tank is arranged on the connecting frame and is connected with the spraying pipe through the connecting pipe.
According to the preferred technical scheme, the connecting frame is connected with a pair of moving blocks in a sliding mode, the moving blocks are rotatably connected with a rotating disc, a connecting rod is rotatably connected between the rotating disc and the sliding block, a driving mechanism is arranged in the center of the connecting frame and used for driving the moving blocks to slide in a reciprocating mode, and the sliding block can be driven to slide from one end of the annular sliding hole to the other end of the annular sliding hole after each moving of the moving blocks.
The rotating disc is coaxially connected with a rotating piece, a rack matched with the rotating piece is fixedly connected to a connecting frame, the rotating piece comprises an outer gear ring, the outer gear ring is meshed with the rack, a ratchet wheel is rotatably connected inside the outer gear ring and is coaxially and fixedly connected with the rotating disc, a pawl is connected to the inner wall of the outer gear ring, and an elastic piece is fixedly connected between the pawl and the inner wall of the outer gear ring.
The driving mechanism comprises a pair of coaxially rotating rollers, a guide frame and a moving block, wherein the rotating rollers are coaxially rotated, the surfaces of the rotating rollers are provided with a pair of spiral grooves with opposite directions, the guide frame is fixedly connected with the connecting frame, the guide frame is connected with the guide block in a sliding mode, and the guide block is fixedly connected with the moving block through a fixing rod.
As an optimal technical scheme, the connecting frame is provided with a driving motor for driving the rotating roller to rotate, the guide block is connected with an arc-shaped block which is in sliding fit with the spiral groove, and the rotating roller drives the guide block to slide back and forth on the guide frame when rotating.
As a preferable technical scheme of the invention, the air inlet valve is connected with a hollow screw, the surface of the screw is movably connected with a sliding sleeve, the screw is connected with an expansion head for blocking an inner hole of an endoscope hose, and the screw is connected with a butterfly nut for driving the sliding sleeve to move.
The beneficial effects of the invention are as follows:
1. According to the invention, the endoscope hose is connected between the expansion plug and the air inlet connector, air is injected into the endoscope hose through the air bag air inlet mechanism, and after the air is pressurized to a certain value, the expansion head expands, so that the tightness of two ends of the endoscope hose is ensured, and the purpose of leak testing the endoscope hose is achieved.
2. The foam spraying assembly is arranged to spray foam at the joint of the endoscope hose, the expansion plug and the air inlet joint, so that the sealing condition of the joint of the endoscope hose can be conveniently observed, and the driving mechanism is arranged to drive the spraying pipe to reciprocate, so that the comprehensive spraying of the periphery of the endoscope hose is realized.
Drawings
Fig. 1 is a schematic structural diagram of a leak detection tool for an electronic endoscope hose.
Fig. 2 is a schematic structural view of a foam spraying assembly according to the present invention.
Fig. 3 is a schematic structural diagram of a driving mechanism according to the present invention.
Fig. 4 is a schematic structural view of a rotating member according to the present invention.
Fig. 5 is a schematic structural diagram of an air inlet joint according to the present invention.
The device comprises a frame 1, a foam spraying assembly 2, a connecting frame 21, a driving mechanism 22, a rotating roller 221, a guide frame 222, a guide frame 223, a guide block 224, an arc-shaped block 225, a spiral groove 23, a moving block 24, a rotating piece 241, an outer gear ring 242, a ratchet wheel 243, a pawl 244, an elastic piece 26, a fixed rod 27, a rotating disc 28, a rack 29, an annular frame 210, an annular sliding hole 211, an opening 212, a sliding block 213, a spraying pipe 214, a connecting pipe 215, a foam compression tank 216, a driving motor 217, a connecting rod 3, an air inlet joint 31, an air inlet valve 32, a screw rod 33, a nut 34, an expansion head 35, a sliding sleeve 4, an expansion plug 5, an air inlet mechanism 51, a pressure gauge 6 and an endoscope hose.
Detailed Description
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.
The embodiment discloses a leakage detection tool for an electronic endoscope hose, as shown in fig. 1-5, comprising a frame 1, wherein an air inlet connector 3 and an expansion plug 4 are fixedly connected to two ends of the frame 1 respectively, an endoscope hose 6 is connected between the air inlet connector 3 and the expansion plug 4, an air inlet valve 31 is connected to the air inlet connector 3, one end of the endoscope hose 6 can be blocked after the expansion plug 4 is inflated, air enters the endoscope hose 6 from the air inlet connector 3, an air bag air inlet mechanism 5 is connected to the air inlet connector 3 and is used for inflating the endoscope hose 6, a pressure gauge 51 is connected to the air bag air inlet mechanism 5, the air bag air inlet mechanism 5 continuously pressurizes the endoscope hose 6 for 0-40Kpa, the pressure is maintained for a period of time, and the pressure change is observed through the pressure gauge 51.
As shown in fig. 2-4, the foam spraying component 2 is used for spraying foam to the joint of the endoscope hose 6, the air inlet joint 3 and the expansion plug 4, and observing whether air leakage exists at the joint; the foam spraying assembly 2 comprises a connecting frame 21, the connecting frame 21 is fixedly connected with a frame 1, two ends of the connecting frame 21 are symmetrically and fixedly connected with a pair of annular frames 29, the annular frames 29 are sleeved on the periphery of the joint of two ends of an endoscope hose 6, one end of each annular frame 29 is provided with an opening 211 for facilitating installation of the annular frame 29, an annular sliding hole 210 is arranged on each annular frame 29, a sliding block 212 capable of reciprocating is connected to the annular sliding hole 210 in a sliding mode, a spraying pipe 213 is fixedly connected to the sliding block 212, a spraying hole is arranged on the spraying pipe 213, the spraying hole always faces the joint of the endoscope hose 6, a foam compression tank 215 is mounted on the connecting frame 21, the foam compression tank 215 is connected with the spraying pipe 213 through a connecting pipe 214, a valve is connected to the foam compression tank 215, foam can be sprayed out of the spraying pipe 213 automatically, when the sliding block 212 slides from one end of the annular sliding hole 210 to the other end, the foam is uniformly sprayed on the joint of the endoscope hose 6 through the spraying pipe 213, a pair of moving blocks 23 are connected to the sliding block 23 in a sliding mode, a rotating disc 27 is connected to the sliding block 23 in a sliding mode, a large friction force exists between the rotating disc 27 and the sliding block 23, the rotating disc 27 is connected to the sliding block 23, one end is connected to the sliding block 21 in a sliding mode, and the sliding rod is connected to the sliding block 21 in a sliding mode, and a large friction force is arranged at one end, and the sliding block 21 is connected to the sliding rod 22.
As shown in fig. 2 and 4, the rotating member 24 is coaxially connected to the rotating disc 27, and the rack 28 matched with the rotating member 24 is fixedly connected to the connecting frame 21; the rotary member 24 includes an outer ring gear 241, the outer ring gear 241 being engaged with the rack 28; the ratchet wheel 242, the ratchet wheel 242 is rotatably connected inside the outer gear ring 241, the ratchet wheel 242 is fixedly connected with the rotating disk 27 coaxially, the pawl 243 is connected to the inner wall of the outer gear ring 241, and an elastic piece 244 is fixedly connected between the pawl 243 and the inner wall of the outer gear ring 241; when the moving block 23 moves towards the direction far away from the annular frame 29, the sliding block 212 is driven to slide from one end of the annular sliding hole 210 to the central position, the rack 28 drives the outer gear ring 241 to rotate, at the moment, the outer gear ring 241 drives the ratchet 242 to rotate when rotating, the ratchet 242 drives the rotating disc 27 to rotate when rotating, so that the connecting point of the connecting rod 217 and the rotating disc 27 can rotate from the left side to the right side.
As shown in FIG. 3, the driving mechanism 22 comprises a pair of coaxially rotating rollers 221, two rotating rollers 221 respectively correspond to two moving blocks 23, a guide frame 222 fixedly connected with the connecting frame 21, a guide block 223 fixedly connected with the guide frame 222 through a fixing rod 26, an arc block 224 in sliding fit with the spiral grooves 225 connected with the guide block 223, and a driving motor 216 arranged on the connecting frame 21 and used for driving the rotating rollers 221 to rotate, wherein the driving motor 216 drives the two rotating rollers 221 to rotate simultaneously through gears, and the rotating rollers 221 drive the guide block 223 to slide back and forth on the guide frame 222 and further drive the moving block 23 to slide on the connecting frame 21 when the arc block 224 can slide from the tail end of one of the spiral grooves 225 to the head end of the other spiral groove 225.
As shown in fig. 5, a hollow screw rod 32 is connected to the air inlet valve 31, a sliding sleeve 35 is movably connected to the surface of the screw rod 32, an expansion head 34 for blocking the inner hole of the endoscope hose 6 is connected to the screw rod 32, a butterfly nut 33 is connected to the screw rod 32 for driving the sliding sleeve 35 to move, the sliding sleeve 35 is used for filling fibers at the position of the expansion head 34, and the expansion head 34 expands after being inflated to block the inner hole of the endoscope hose 6.
The working principle is that two ends of an endoscope hose 6 are respectively arranged on an expansion head 34 and an expansion plug 4, the two ends of the endoscope hose 6 are respectively plugged and sealed after the expansion head 34 and the expansion plug 4 are inflated, then the air bag air inlet mechanism 5 is used for continuously pressurizing the pressure of 0-40Kpa to the endoscope hose 6, foam is uniformly sprayed on the peripheral surface of the joint of the two ends of the endoscope hose 6 through the foam spraying assembly 2, in the spraying process, a valve on a foam compression tank 215 is opened, a driving motor 216 is started to drive a moving block 23 to reciprocate, and then a sliding block 212 is driven to slide from one end to the other end of an annular sliding hole 210, in the sliding process, foam is uniformly sprayed on the peripheral surface of the joint of the two ends of the endoscope hose 6 through a spraying pipe 213, the influence of air leakage on the test result of the joint of the two ends of the endoscope hose 6 is avoided, and the change of a pressure gauge 51 is observed on the premise of ensuring the sealing of the joint of the two ends of the endoscope hose 6.
It should finally be noted that in the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.