A switching valve air tightness detection device

Abstract

The present invention discloses a switching valve air tightness detection device, which belongs to the field of mechanical equipment technology. It mainly includes a bearing plate, a pressurizing mechanism, a bearing mechanism and a mixed detection mechanism. A first driver is arranged on the bearing plate. The pressurizing mechanism includes a slide plate slidably connected to the bearing plate and a pressurizing tube arranged on the slide plate. The bearing mechanism includes a bearing platform, a fixed disk, a driven gear arranged on the fixed disk, a second driver installed on the bearing platform, a driving gear arranged on the output end of the second driver and a fixed shaft. A first stepped hole is arranged on the fixed disk corresponding to the valve seat of the switching valve, and a positioning block is arranged at one end of the fixed shaft extending into the fixed disk. The mixed detection mechanism includes a frame installed on the bearing platform, a slider, an air connection pipe arranged on the slider, a liquid pipe arranged on the slider and a third driver installed on the slider. A switching valve air tightness detection device of the present invention can efficiently and effectively perform air tightness detection on the switching valve.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and in particular to an air tightness detection device for a switching valve. Background Art

[0002] The switching valve changes the connection flow path by the relative rotation of the rotor. Figure 7 As shown, the switching valve 600 includes a valve head 610, a valve seat 620 disposed at one end of the valve head, a rotor 630 rotatable relative to the valve head 610, and a rotating shaft 640 received in the valve seat 620 and fixed to the rotor 630. The valve head 610 is provided with a common interface 611 and a plurality of reversing interfaces 612, and the rotor 630 is provided with a groove 631. The rotor 630 is relatively rotated to make the groove 631 communicate with the target reversing interface 612, thereby switching the fluid flow path. Since this switching valve has a large number of reversing interfaces 612, it is difficult for the existing air tightness detection device to effectively and efficiently detect it.

[0003] Therefore, it is necessary to provide a switching valve air tightness detection device to solve the above problems. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a switching valve air tightness detection device, which can efficiently and effectively perform air tightness detection on the switching valve.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a switching valve air tightness detection device; including a bearing plate, a pressurizing mechanism, a bearing mechanism and a mixed detection mechanism, the bearing plate is provided with a first driver for driving the pressurizing mechanism to move, the pressurizing mechanism includes a slide plate slidably connected to the bearing plate and a pressurizing tube installed on the slide plate, the bearing mechanism includes a bearing platform connected to the bearing plate, a fixed disk rotatably arranged on the bearing platform corresponding to the pressurizing tube, a driven gear arranged on the fixed disk, a second driver installed on the bearing platform, a driving gear arranged on the output end of the second driver and transmission-connected to the driven gear, and a fixed shaft fixed relative to the bearing platform, the fixed disk is provided with a first stepped hole at one end facing the pressurizing tube, a positioning block is provided on the end of the fixed shaft extending into the first stepped hole, the mixed detection mechanism includes a frame installed on the bearing platform, a slider slidably arranged on the frame, an air receiving pipe arranged on the slider, a liquid pipe arranged on the slider adjacent to the air receiving pipe, and a third driver installed on the frame for driving the slider to move.

[0006] Furthermore, the supporting plate is provided with a guide rail facing the supporting mechanism and for the slide plate to be slidably connected thereto, and the supporting plate is provided with a first screw rod rotatably arranged along the length direction of the guide rail, and the first driver and the first screw rod realize torque transmission through a pulley, and the slide plate is installed with a first screw rod nut which is matched with the first screw rod.

[0007] Furthermore, one end of the pressurizing pipe facing away from the supporting mechanism is connected to an external gas pressurizing system.

[0008] Furthermore, a cavity is opened on one end face of the supporting platform corresponding to the pressure mechanism, and the fixed plate, driven gear and driving gear are all accommodated in the cavity. The supporting mechanism also includes a transmission gear rotatably arranged in the cavity and meshing between the driven gear and the driving gear.

[0009] Furthermore, the bearing mechanism also includes a cover plate detachably mounted on the upper end surface of the bearing platform.

[0010] Furthermore, a slide rail is installed on the side of the frame facing the fixed disk for the slider to be slidably connected thereto, and the mixed detection mechanism also includes a second screw rod rotatably arranged on the frame, and the slider is provided with a second screw rod nut that is matched and sleeved on the second screw rod, and the third drive is connected to the second screw rod through a pulley transmission.

[0011] Furthermore, one end of the air connection pipe facing away from the supporting mechanism is connected to an external air pressure monitoring system.

[0012] Furthermore, two liquid pipes are provided, and one end of the liquid pipe facing away from the supporting mechanism is connected to an external liquid supply system.

[0013] Furthermore, a base is provided at the bottom end of the carrying plate, and a fixing seat connected to the fixing shaft is installed on the base corresponding to the fixing shaft.

[0014] Furthermore, the switching valve air tightness detection device also includes an absolute value encoder fixedly mounted on the fixing seat, and the absolute value encoder is rotatably provided with an encoder connecting shaft fixedly connected to the fixing disk.

[0015] The beneficial technical effects of the present invention are as follows: a switching valve air tightness detection device of the present invention, wherein a pressurizing tube for pressurizing the switching valve is provided on a sliding plate, a fixed disk is rotatably provided along the axial direction of the pressurizing tube in the bearing mechanism, a first stepped hole is provided in the fixed disk for circumferentially fixing a valve seat portion of the switching valve, and a fixed shaft is also provided in the bearing mechanism which extends into the fixed disk and is circumferentially fixed to a rotating shaft of the switching valve, so that the valve head portion of the switching valve can be driven to rotate relative to the rotor by a second driver in the bearing mechanism to switch different reversing interfaces to be connected with a common interface, and a slidable air connection pipe in the mixing detection mechanism is connected to a reversing pipe on the switching valve which is connected with the common interface. The interface is coaxial, so that the air connecting pipe can be moved and extended into the target reversing interface. The mixing detection mechanism is also provided with a liquid pipe coaxial with the reversing interface corresponding to the air connecting pipe and the adjacent reversing interface. In this way, when the air connecting pipe is docked in the target reversing interface and the air tightness is detected by the air method, the liquid pipe can simultaneously inject liquid into the adjacent reversing interface, thereby detecting the adjacent reversing interface by the water immersion method. In this way, if the compressed gas in the flow channel of the switching valve injected from the pressurizing pipe leaks into the adjacent reversing interface, the air tightness of the switching valve can be directly judged by the bubbles, which not only can effectively detect the air tightness of the switching valve, but also has a high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] In the figure: Figure 1 It is a schematic diagram of the overall structure of a switching valve air tightness detection device of the present invention;

[0018] Figure 2 for Figure 1 The structural diagram after the cover plate and the mixed detection mechanism are omitted;

[0019] Figure 3 It is a schematic diagram of the internal structure of a pressurized tube in a switching valve air tightness detection device of the present invention;

[0020] Figure 4 It is a schematic diagram of the internal structure of a bearing mechanism in a switching valve air tightness detection device of the present invention;

[0021] Figure 5 It is a cross-sectional view of a mixing detection mechanism in a switching valve air tightness detection device of the present invention;

[0022] Figure 6 It is a structural schematic diagram of a fixed disk in a switching valve air tightness detection device of the present invention;

[0023] Figure 7 It is a structural schematic diagram of an existing switching valve;

[0024] In the figure:

[0025] 100, bearing plate; 110, guide rail; 120, bearing seat; 130, first screw rod; 140, first driver; 150, base; 160, fixing seat.

[0026] 200, pressurizing mechanism; 210, slide plate; 211, first screw nut; 212, first slide hole; 220, pressurizing tube; 221, first air nozzle; 222, first elastic member; 223, first fastener.

[0027] Carrying mechanism; 310, carrying platform; 311, cavity; 312, cover plate; 320, fixed plate; 321, first step hole; 322, pin hole; 323, second step hole; 330, bearing; 340, driven gear; 350, second driver; 351, reduction gear box; 360, driving gear; 370, transmission gear; 380, fixed shaft.

[0028] 400, mixed detection mechanism; 410, frame; 411, slide rail; 420, slider; 421, second slide hole; 422, second screw nut; 430, air pipe; 431, second air nozzle; 432, second elastic member; 433, second fastener; 440, liquid pipe; 450, second screw; 460, third driver.

[0029] 500, absolute encoder; 510, encoder connecting shaft.

[0030] 600, switching valve; 610, valve head; 611, common interface; 612, switching interface; 620, valve seat; 630, rotor; 631, groove; 640, rotating shaft; 641, slot. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0032] like Figure 1The present invention provides a switching valve air tightness detection device, which is used to perform air tightness detection on a switching valve 600. The switching valve air tightness detection device of the present invention includes a carrier plate 100, a pressurizing mechanism 200 movably installed on the carrier plate 100, a carrier mechanism 300 corresponding to the lower portion of the pressurizing mechanism 200, and a mixed detection mechanism 400 installed on the carrier mechanism 300. During detection, the switching valve 600 is placed at a corresponding position on the carrier platform 310, and the switching valve 600 is simulatedly pressurized by the pressurizing mechanism 200, and then the switching valve 600 is detected for leakage by the mixed detection mechanism 400.

[0033] like Figure 7 As shown, the switching valve air tightness detection device of the present invention has a switching valve 600 to be detected, which includes a valve head 610, a valve seat 620, a rotor 630 and a rotating shaft 640. The valve head 610 is fixedly installed at one end of the valve seat 620. The bottom of the valve seat 620 is provided with a pin hole for circumferential fixing. The outer end surface of the valve head 610 is provided with a common interface 611 along its axial direction. The valve head 610 is provided with a plurality of reversing interfaces 612 at the same end surface position as the common interface 611 along the circumference of the valve head 610, and the central axis of the reversing interface 612 forms an angle ɑ with the central axis of the common interface 611. In this embodiment, ɑ=45°, the rotor 630 movably abuts against the inner end face of the valve head 610, and a groove 631 is radially provided on the abutting end face of the rotor 630, and the groove 631 is always connected to the common interface 611, and the shaft 640 is fixedly connected to one end of the rotor 630, and the end of the shaft 640 extending to the outside of the valve seat 620 is radially provided with a slot 641, and the position of the liquid-passing groove 810 is changed by rotating the rotor relative to the stator valve core 900, so that the common interface 611 is connected to the target reversing interface 612, thereby realizing the fluid flow channel switching function.

[0034] In order to enable the slide plate 210 to achieve linear movement, two parallel guide rails 110 are fixedly installed on the carrier plate 100, and a first screw rod 130 flush with the guide rail 110 is also movably installed on the carrier plate 100. Specifically, two spaced apart bearing seats 120 for the first screw rod 130 to pass through are fixedly installed on the carrier plate 100 along the length direction of the guide rail 110, so that the first screw rod 130 has rotational motion; a base 150 that plays a stabilizing role is fixedly installed on the bottom of the carrier plate 100, and a fixing seat 160 is fixedly installed on the base 150.

[0035] A first driver 140 is installed on the supporting plate 100 at the back side corresponding to the first screw rod 130. In order to enable the first driver 140 to drive the first screw rod 130 to rotate, the output end of the first driver 140 is transmission-connected with the end of the first screw rod 130 in the same direction. In the present embodiment, the first driver 140 is a motor, and the output end of the first driver 140 and the end of the first screw rod 130 in the same direction are both provided with synchronous pulleys, and the two synchronous pulleys are transmission-connected via a synchronous belt.

[0036] The pressurizing mechanism 200 includes a slide plate 210 and a pressurizing pipe 220 movably disposed on the slide plate 210 .

[0037] The slide plate 210 is slidably mounted on the two guide rails 110 through a slider. In order to enable the first driver 140 to accurately control the position of the slide plate 210, a first screw nut 211 which is sleeved on the first screw rod 130 and corresponds to the first screw rod 130 is fixedly mounted on the side of the slide plate 210 facing the first screw rod 130. When the first screw rod 130 rotates, the circumferential motion can be converted into linear motion through the first screw nut 211, driving the first screw nut 211 and the slide plate 210 fixedly connected thereto to slide along the guide rail 110. At the same time, refer to Figure 2 and 3 As shown, a first sliding hole 212 is opened on the slide plate 210 along the length direction of the guide rail 110 .

[0038] The pressurized tube 220 is a tubular structure with two ends connected. The pressurized tube 220 can be slidably inserted into the first sliding hole 212. More specifically, the pressurized tube 220 is integrally connected with a first air nozzle 221 that can be inserted into the common interface 611 at one end facing the supporting mechanism 300, that is, the outer diameter of the first air nozzle 221 is smaller than the inner diameter of the common interface 611, so that the first air nozzle 221 can be inserted into and abut against the step surface in the common interface 611 through its end face, thereby temporarily achieving a tight docking with the common interface 611. A first elastic member 222 is sleeved on the pressurized tube 220, which abuts between the first air nozzle 221 and the sliding plate 210. A first fastener 223 is installed on 20 at the end facing away from the first air nozzle 221, which is against the slide plate 210, so that the pressurizing tube 220 can rebound in the direction away from the supporting mechanism 300, thereby protecting the pressurizing tube 220 from overtravel, and the end of the pressurizing tube 220 facing away from the first air nozzle 221 is connected to the output end of an external gas pressurization system (such as an air pump), so that compressed gas for air tightness detection can be delivered to the switching valve 600 through the pressurizing tube 220. In this embodiment, the first elastic member 222 is a sleeve-shaped structure made of elastic material, and the first fastener 223 is a nut screwed onto the pressurizing tube 220.

[0039] refer to Figure 2As shown, the carrying mechanism 300 includes a carrying platform 310 , a fixing plate 320 , a driven gear 340 , a second driver 350 and a driving gear 360 .

[0040] The support platform 310 is fixedly connected to the support plate 100 by fasteners and is located below the pressurizing mechanism 200. Figure 2 The upper end of the carrier 310 is provided with a cavity 311, and the fixed plate 320 is rotatably accommodated in the cavity 311 and corresponds to the lower part of the pressurized tube 220. Figure 4 More specifically, a bearing 330 is fixedly installed in the cavity 311 and at a position coaxial with the fixed disk 320, and the fixed disk 320 is inserted and fixed in the inner ring of the bearing 330; in order to enable the second driver 350 to drive the fixed disk 320 to rotate, the driven gear 340 is fixedly sleeved on the fixed disk 320 and accommodated in the cavity 311, and the second driver 350 is fixedly installed with a reduction box 351 for matching the rotation speed on its output end. The second driver 350 is fixedly installed at the bottom of the carrier 310 through the reduction box 351, and the output shaft of the reduction box 351 extends into the cavity 311, so that the driving gear 360 is fixedly sleeved on the reduction box 35 1 and is located in the cavity 311 at a position flush with the driven gear 340. In a specific embodiment, in order to allow the second driver 350 to be away from the fixed disk 320, thereby allowing the remaining components to be installed below the fixed disk 320, the carrying mechanism 300 also includes a transmission gear 370 rotatably arranged in the cavity 311 and located between the driven gear 340 and the driving gear 360, and the transmission gear 370 is in contact and meshing with both the driven gear 340 and the driving gear 360; in order to isolate the outside world and keep the cavity 311 clean, the carrying mechanism 300 also includes a cover plate 312 detachably mounted on the upper end surface of the carrying platform 310.

[0041] refer to Figure 6 As shown, in a specific embodiment, the fixed disk 320 is roughly a cylindrical structure with two ends through, and the fixed disk 320 has an end facing the pressurizing mechanism 200 and corresponds to the valve seat 620 of the switching valve 600, and is provided with a first step hole 321 in which the valve seat 620 can be received, that is, the inner diameter of the first step hole 321 is slightly larger than the outer diameter of the valve seat 620, and in order to enable the switching valve 600 to be circumferentially fixed on the fixed disk 320, a pin hole 322 is provided on the step plane at the bottom of the first step hole 321, so that the switching valve 600 can be circumferentially fixed by a key connection, and a second step hole 323 is provided on the end of the fixed disk 320 that is away from the first step hole 321, and a bearing is fixedly installed in the second step hole 323, so that the components inserted in the second step hole 323 can rotate relative to the fixed disk 320.

[0042] In order to be able to switch the flow channel of the switching valve 600 placed in the fixed disk 320, the supporting mechanism 300 also includes a fixed shaft 380 arranged axially along the fixed disk 320, and one end of the fixed shaft 380 is integrally connected with a positioning block 390 corresponding to the slot 641 of the rotating shaft 640 on the switching valve 600, and when the positioning block 390 is inserted into the slot 641 of the rotating shaft 640 on the switching valve 600, the groove 631 on the rotor 630 faces the mixing detection mechanism 400, and the fixed shaft 380 has one end of the positioning block 390 which is rotatably inserted into the second step hole 323 on the fixed disk 320, so that the positioning block 390 extends into the first step hole 321, and the other end of the fixed shaft 380 is fixedly mounted on the fixed seat 160.

[0043] A switching valve air tightness detection device of the present invention also includes an absolute value encoder 500 fixedly mounted on a fixed seat 160, and a cylindrical encoder connecting shaft 510 is rotatably provided on the absolute value encoder 500. The connecting end of the encoder connecting shaft 510 is fixedly connected to a fixed disk 320 by a fastener to achieve circumferential fixation, so that the rotation of the fixed disk 320 can be regulated by the absolute value encoder 500, thereby reducing the transmission error of the second driver 350 to the fixed disk 320.

[0044] refer to Figure 1 As shown, the mixing detection mechanism 400 includes a frame 410 , a slider 420 , an air connection pipe 430 , a liquid pipe 440 , a second screw rod 450 and a third driver 460 .

[0045] The frame 410 is fixedly installed on the support platform 310 at a position adjacent to the fixed disk 320. A slide rail 411 is fixedly installed on the side of the frame 410 facing the fixed disk 320. Specifically, the slide rail 411 is inclined. In the present embodiment, the angle between the slide rail 411 and the end face of the support platform 310 is 90°-ɑ=45°, so that the movable parts on the slide rail 411 can smoothly enter the target reversing interface 612 along the slide rail 411.

[0046] Also refer to Figure 5 As shown, the slider 420 is slidably mounted on the slide rail 411 , a second slide hole 421 is opened on the slider 420 along the length direction of the slide rail 411 , and a second lead screw nut 422 corresponding to the second lead screw 450 is installed on the slider 420 along the length direction of the slide rail 411 .

[0047] The air connection pipe 430 is a tubular structure with two ends connected. The air connection pipe 430 can be slidably arranged in the second sliding hole 421. More specifically, the air connection pipe 430 is integrally connected with a second air nozzle 431 with an outer diameter smaller than the reversing interface 612 on the valve head 610 at one end facing downward. In this way, the second air nozzle 431 can extend into the reversing interface 612 and the end face of the second air nozzle 431 abuts against the step surface inside the reversing interface 612, thereby temporarily achieving a tight connection with the reversing interface 612. A second elastic member 432 is sleeved and abuts against the second air nozzle 431 and the slider 420. A second fastener 433 is installed on the air connecting pipe 430 at the end facing away from the second air nozzle 431 and abuts against the slider 420. In this way, the air connecting pipe 430 can rebound in the direction of the second fastener 433 to protect the air connecting pipe 430 from overtravel. The end of the air connecting pipe 430 facing away from the second air nozzle 431 is connected to an external air pressure monitoring system for monitoring the air pressure in the flow channel of the switching valve 600.

[0048] The liquid pipe 440 is fixedly installed on the slider 420 along the length direction of the air connecting pipe 430, and the upper end of the liquid pipe 440 is connected to the external liquid supply system. In this embodiment, the liquid pipe 440 is provided with two reversing interfaces 612 corresponding to the air connecting pipe 430 respectively, and the two adjacent reversing interfaces 612 are coaxial. In this way, when the air connecting pipe 430 is moved and inserted into the target reversing interface 612, the two side liquid pipes 440 will also enter into the two reversing interfaces 612 beside the target reversing interface 612, and the two side reversing interfaces 612 will be tested for air tightness through water intrusion to improve the detection efficiency.

[0049] The second screw rod 450 is rotatably mounted on the frame 410 and passes through a second screw rod nut that cooperates with it on the slider 4200. The second driver 460 is fixedly mounted on the frame 410 and is transmission-connected to the second screw rod 450. In this embodiment, the third driver 460 is a motor, and a synchronous pulley is provided on the output end of the third driver 460 and the end in the same direction as the second screw rod 450. The two synchronous pulleys are transmission-connected via a synchronous belt.

[0050] The working process of a switching valve air tightness detection device of the present invention is described below in conjunction with the accompanying drawings:

[0051] The switching valve 600 to be tested is inserted into the first stepped hole 321 of the fixed disk 320 with the valve seat 620 facing downward, and the position of the rotating shaft 640 is adjusted so that the upper slot 641 cooperates with the positioning block 390 at the top of the fixed shaft 380. Then, the fixed disk 320 is driven to rotate by the second driver 350. Since the valve head 610 of the switching valve 600 is circumferentially fixed to the fixed disk 320, and the rotor 630 and the rotating shaft 640 are circumferentially fixed to the fixed shaft 380, the valve head 610 rotates relative to the rotor 630 until the target reversing interface 612 faces the air connecting pipe 430 in the mixing detection mechanism 400, and the groove 631 on the rotor 630 is always connected with the common interface 611 and a reversing interface 612 facing the air connecting pipe 430.

[0052] Then the first driver 140 and the third driver 460 operate, respectively driving the slide plate 210 to move downward so that the pressurized pipe 220 extends into the common interface 611 of the switching valve 600 and docks with the common interface 611, and the slider 420 moves along the slide rail 411 to drive the air pipe 430 to approach and extend into the target reversing interface 612 and dock with the target reversing interface 612, and at the same time, the two liquid pipes 440 also enter the two reversing interfaces 612 adjacent to the target reversing interface 612.

[0053] Then the gas boosting system starts to input compressed gas (such as compressed air) into the switching valve 600 through the pressurizing pipe 220. Since the common interface 611 is connected to the reversing interface 612 connected to the gas connecting pipe 430, the compressed gas will pass through the gas connecting pipe 430 and the air pressure monitoring system connected to the tail end of the gas connecting pipe 430. At the same time, the liquid supply system injects a certain amount of liquid medium (such as distilled water) into the target reversing interface 612 and its two adjacent reversing interfaces 612 through the liquid pipe 440. When the air pressure in the flow channel of the switching valve 600 reaches a preset value, the gas boosting system and the switch valve at the tail end of the gas connecting pipe 430 are closed, and the air pressure is kept for a period of time. The monitoring system obtains the change in air pressure value, thereby detecting whether the air tightness of the reversing interface 612 at the target position is qualified, and if bubbles appear in two adjacent reversing interfaces 612, the leakage position can be quickly known, and the detection efficiency is effectively improved; then the first driver 140 and the third driver 460 are started to make the pressurized pipe 220 and the air connecting pipe 430 separate from the switching valve 600, and then the second driver 350 is started to drive the switching valve 600 and its valve head 610 part continue to rotate relative to the rotor 630, so that the next reversing interface 612 is aligned with the air connecting pipe 430, and the above process is repeated to perform air tightness detection on the reversing interfaces 612 one by one.

[0054] Therefore, the switching valve air tightness detection device of the present invention has at least the following beneficial effects:

[0055] A pressurizing tube 220 for pressurizing the switching valve 600 is provided on the slide plate 210 movably arranged on the carrier plate 100, and a fixed disk 320 is rotatably arranged along the axial direction of the pressurizing tube 220 in the carrier mechanism 300, and a first stepped hole 321 is provided in the fixed disk 320 for circumferentially fixing the valve seat 620 part of the switching valve 600, and a fixed shaft 380 is also provided in the carrier mechanism 300, which extends into the fixed disk 320 and is circumferentially fixed to the rotating shaft 640 of the switching valve 600, so that the valve head 610 part of the switching valve 600 can be driven to rotate relative to the rotor 630 by the second driver 350 in the carrier mechanism 300, so as to switch different reversing interfaces 612 to be connected with the common interface 611, and the slidable air connection pipe 430 in the mixing detection mechanism 400 is connected to the common interface 611 on the switching valve 600. The reversing interface 612 is coaxial, so that the air connecting pipe 430 can be moved and extended into the target reversing interface 612. The mixing detection mechanism 400 is also provided with a reversing interface 612 corresponding to the air connecting pipe 430 and a liquid pipe 440 coaxial with its adjacent reversing interface 612. In this way, when the air connecting pipe 430 is docked in the target reversing interface 612 and the air tightness is detected by the air method, the liquid pipe 440 can simultaneously inject liquid into the adjacent reversing interface 612, thereby detecting the adjacent reversing interface 612 by the water immersion method. In this way, if the compressed gas in the flow channel of the switching valve 600 injected from the pressurizing pipe 220 leaks into the adjacent reversing interface 612, the air tightness of the switching valve 600 can be directly judged by the bubbles, which not only can effectively detect the air tightness of the switching valve 600, but also has a high detection efficiency.

[0056] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the scope of the present invention through the above description. The technical scope of this invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A switching valve air tightness detection device, characterized in that: The invention comprises a bearing plate (100), a pressurizing mechanism (200), a bearing mechanism (300) and a mixing detection mechanism (400), wherein the bearing plate (100) is provided with a first driver (140) for driving the pressurizing mechanism (200) to move, the pressurizing mechanism (200) comprises a slide plate (210) slidably connected to the bearing plate (100) and a pressurizing tube (220) mounted on the slide plate (210), and the bearing mechanism (300) comprises a bearing platform (310) connected to the bearing plate (100), a fixed disk (320) rotatably arranged on the bearing platform (310) and corresponding to the pressurizing tube (220), a driven gear (340) arranged on the fixed disk (320), a second driver (350) mounted on the bearing platform (310), and a driven gear (340) arranged on the second driver (350). A driving gear (360) is provided on the output end and is transmission-connected to the driven gear (340), and a fixed shaft (380) fixed relative to the support platform (310); a first stepped hole (321) is provided at one end of the fixed plate (320) facing the pressurized tube (220); a positioning block (390) is provided at one end of the fixed shaft (380) extending into the first stepped hole (321); and the mixing detection mechanism (400) comprises a frame (410) mounted on the support platform (310), a slider (420) slidably mounted on the frame (410), an air connection pipe (430) mounted on the slider (420), a liquid pipe (440) disposed on the slider (420) adjacent to the air connection pipe (430), and a third driver (460) mounted on the frame (410) for driving the slider (420) to move.

2. A switching valve air tightness detection device according to claim 1, characterized in that: The bearing plate (100) is provided with a guide rail (110) facing the bearing mechanism (300) and for the slide plate (210) to be slidably connected thereto; a first screw rod (130) is rotatably provided on the bearing plate (100) along the length direction of the guide rail (110); the first driver (140) and the first screw rod (130) realize torque transmission via a pulley; and a first screw rod nut (211) which is fitted on the first screw rod (130) is installed on the slide plate (210).

3. The switching valve air tightness detection device according to claim 1, characterized in that: The end of the pressurizing pipe (220) facing away from the supporting mechanism (300) is connected to an external gas pressurizing system.

4. The switching valve air tightness detection device according to claim 1, characterized in that: A cavity (311) is provided on one end surface of the support platform (310) corresponding to the pressure mechanism (200), and the fixed plate (320), the driven gear (340) and the driving gear (360) are all accommodated in the cavity (311). The support mechanism (300) further includes a transmission gear (370) rotatably arranged in the cavity (311) and meshing between the driven gear (340) and the driving gear (360).

5. The switching valve air tightness detection device according to claim 1, characterized in that: The carrying mechanism (300) further comprises a cover plate (312) detachably mounted on the upper end surface of the carrying platform (310).

6. The switching valve air tightness detection device according to claim 1, characterized in that: A slide rail (411) is installed on one side of the frame (410) facing the fixed disk (320) for the slider (420) to be slidably connected thereto. The mixing detection mechanism (400) further comprises a second screw rod (450) rotatably arranged on the frame (410). The slider (420) is provided with a second screw rod nut (422) which is matched and sleeved on the second screw rod (450). The third driver (460) is connected to the second screw rod (450) through a pulley transmission.

7. The switching valve air tightness detection device according to claim 1, characterized in that: One end of the air connection pipe (430) facing away from the supporting mechanism (300) is connected to an external air pressure monitoring system.

8. The switching valve air tightness detection device according to claim 1, characterized in that: Two liquid pipes (440) are provided, and one end of the liquid pipe (440) facing away from the supporting mechanism (300) is connected to an external liquid supply system.

9. The switching valve air tightness detection device according to claim 1, characterized in that: A base (150) is provided at the bottom end of the carrying plate (100), and a fixing seat (160) connected to the fixing shaft (380) is installed on the base (150) corresponding to the fixing shaft (380).

10. The switching valve air tightness detection device according to claim 9, characterized in that: The switching valve air tightness detection device further comprises an absolute value encoder (500) fixedly mounted on the fixing seat (160), and an encoder connecting shaft (510) fixedly connected to the fixing disk (320) is rotatably provided on the absolute value encoder (500).

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