Cast iron pipe fitting air tightness detection device

Abstract

The invention discloses an air tightness detection device for a cast iron pipe fitting, relates to the technical field of casting detection, and solves the technical problems that a tiny leakage point is difficult to accurately detect and an observation blind area exists at the position of the leakage point of the cast iron pipe fitting is difficult to observe in real time. A detection mechanism is arranged in the water tank, a filtering mechanism is arranged at the bottom end of the detection mechanism, and a lifting mechanism is arranged at the bottom end of the filtering mechanism. Through cooperation of the mechanisms, air tightness detection can be carried out on cast iron pipe fittings of different specifications, whether leakage points exist in the pipe fittings or not can be observed more clearly by blowing dyeing powder into the pipe fittings, the situation that some leakage points are difficult to find due to too small pore diameters is avoided, the dyeing powder entering detection water can be adsorbed, the water is kept clear, and the detection efficiency is improved. The detected cast iron pipe fitting can be conveniently separated from the water tank, meanwhile, color absorption paper in the filtering mechanism can be conveniently replaced, and the purification effect on detected water in the water tank is kept.

Description

Technical Field

[0001] The invention relates to the technical field of casting detection, and in particular to an air tightness detection device for a cast iron pipe fitting. Background Art

[0002] Cast iron pipes, especially ductile iron pipes, have an important link in ensuring the safe and stable operation of the pipeline system. Cast iron pipes are widely used in water supply and drainage, gas and other fields. Their air tightness is directly related to the sealing and operating efficiency of the system. Therefore, air tightness testing is an indispensable step in the process of pipeline installation, maintenance or modification. Common methods for air tightness testing of cast iron pipes include bubble method, smear method, chemical gas tracer leak detection method, etc. Among them, the bubble method is the most commonly used method for air tightness testing of cast iron pipes. It is simple to operate and can directly observe the leakage site, but it may be difficult to accurately detect complex structures or small leaks;

[0003] After searching, a cast iron pipe air tightness tester was disclosed in a Chinese patent, with the publication number CN217637834U. The position of the pipe is adjusted appropriately by adjusting the height of the pad. A perforated latex sealing plate, a disc latex sealing plate, and a square latex sealing plate are placed at the contact point between the pipe mouth and the pad. After the pipe is placed, the upper air cylinder drives the pressure frame to press the pipe downward, and then the water tank support cylinder is used to lift the water tank filled with water upward so that the pipe is completely immersed in water. Then compressed air is passed into the pipe, and whether the pipe is leaking is determined by observing whether there are bubbles overflowing from the water;

[0004] However, the above-mentioned device still has some shortcomings when in use. When performing air tightness detection on cast iron pipe fittings, it is difficult to accurately detect tiny leaks. At the same time, the placement angle of the cast iron pipe fittings cannot be adjusted during the detection process of the cast iron pipe fittings. It is difficult to observe the position of the leak point of the cast iron pipe fittings in real time, and there is an observation blind spot. Summary of the invention

[0005] The purpose of the present invention is to provide a cast iron pipe fitting air tightness detection device to solve the following technical problems:

[0006] When performing air tightness testing on cast iron pipe fittings, there is also the problem of difficulty in accurately detecting tiny leaks. At the same time, the placement angle of the cast iron pipe fittings cannot be adjusted during the testing process, making it difficult to observe the location of the leaks in the cast iron pipe fittings in real time, resulting in blind spots in observation.

[0007] The object of the present invention can be achieved by the following technical solution: A cast iron pipe air tightness detection device comprises a base, a top end of the base is fixedly connected to a water tank, and a detection mechanism is arranged inside the water tank;

[0008] The detection mechanism comprises a detection box, a plurality of hydraulic rods are arranged through one side of the detection box, and the sides of the plurality of hydraulic rods are rotatably connected with chucks, a detection member is arranged on the other side of the detection box, and a support member is arranged at the inner bottom end of the detection box;

[0009] The detection component includes a turntable, a first transmission wheel is fixedly connected to the side surface of the turntable, a second transmission wheel is arranged at the front end of the first transmission wheel, a first motor is threadedly connected to the side surface of the second transmission wheel through a flange, a plurality of the first transmission wheels and the outer walls of the second transmission wheels are sleeved with a transmission belt, a plurality of the first transmission wheels are rotatably connected to an air nozzle inside, a sleeve is sleeved on one side of the outer wall of the air nozzle, a storage tank is threadedly connected to the bottom end of the sleeve, the turntable is rotatably connected to the top end of the other side of the detection box, the first motor is fixed to one side of the top end of the front surface of the detection box, the second transmission wheel is locked to the outer wall of the output shaft of the first motor through a coupling, the other side of the air nozzle is arranged through the center of the other side of the turntable, and one side of the outer wall of the air nozzle is communicated with the sleeve.

[0010] As a further solution of the present invention, a plurality of rubber sealing rings are evenly processed inside the side surfaces of the chuck and the turntable, and the inner diameter specifications of the rubber sealing rings increase from the inside to the outside.

[0011] As a further solution of the present invention, the air outlet of the air nozzle is arranged at the center of the other side of the turntable, and the air inlet of the air nozzle is connected to the external air source through a connecting pipe.

[0012] As a further solution of the present invention, the interior of the storage tank is filled with dyeing powder.

[0013] As a further scheme of the present invention, the supporting member includes a support, a transmission housing is fixedly connected to the inner side of the support, a transmission rod is penetrated through the inner top end of the transmission housing, the front end of the transmission rod is locked on the output shaft of the second motor through a coupling, a plurality of worms are evenly distributed on the outer wall of the transmission rod, the bottom end of the worm is meshedly connected with a turbine, the side of the turbine is fixedly connected with a screw, two limit rods are fixedly connected to the side of the support, the outer wall of the limit rod is slidably connected with a threaded block, the support is fixed to the bottom end of one side of the inner wall of the detection box, the rear end of the transmission rod is rotatably connected to the back side of the inner wall of the detection box, the second motor is threadedly connected to the bottom end of one side of the front surface of the detection box through a flange, the plurality of worms are all arranged on the inner top end of the transmission housing, the turbine is rotatably connected to the inner bottom end of the transmission housing, the other side of the screw is rotatably connected to the bottom end of the other side of the inner wall of the detection box, the other side of the limit rod is also fixed to the bottom end of the other side of the inner wall of the detection box, and the inner bottom end of the threaded block is threadedly connected to the outer wall of the screw.

[0014] As a further solution of the present invention, the supporting member also includes an outer shell, a pneumatic push rod is fixedly connected to the center of the inner bottom end of the outer shell, a wedge block is fixedly connected to the top of the pneumatic push rod, a vertical rod is fixedly connected to the top of the wedge block, two support rods are rotatably connected to the inner top of the outer shell, the tops of the vertical rod and the two support rods are rotatably connected to balls, the bottom ends of the two support rods are rotatably connected to pulleys, the outer shell is fixed to the top of the threaded block, the top of the outer wall of the vertical rod is slidably connected to the inner center of the top of the outer shell, and the bottom end of the pulley is attached to the top of the outer wall of the wedge block.

[0015] As a further scheme of the present invention, a filtering mechanism is provided at the bottom end of the detection mechanism, and the filtering mechanism includes a sliding frame, a cross bar fixedly connected to the internal center of the sliding frame, a slide plate 1 is slidably connected to one side of the interior of the sliding frame, and a slide plate 2 is slidably connected to the other side of the interior of the sliding frame, a handle is fixedly connected to the outer centers of the slide plates 1 and 2, the inner bottom ends of the slide plates 1 and 2 are fixedly connected to a grid plate, a pressing plate is provided at the top of the grid plate, the top front end and the top rear end of the other side of the slide plate 1 are fixedly connected to a rack 1, and the bottom front end and the bottom rear end of the other side of the slide plate 2 are fixedly connected to a rack 2, the front end and the rear end of the cross bar are rotatably connected to a gear, the sliding frame is fixedly connected to the bottom end of the detection box, the pressing plate is clamped at the inner top ends of the slide plates 1 and 2, and the top and bottom ends of the gear are respectively meshed with the bottom end of the rack 1 and the top end of the rack 2.

[0016] As a further solution of the present invention, a layer of color absorbing paper is arranged on the top of the grid plate, and the pressing plate is pressed on the top of the color absorbing paper.

[0017] As a further solution of the present invention, a lifting mechanism is provided at the bottom end of the filtering mechanism, and the lifting mechanism includes a bottom plate, and two buckle plates are slidably connected to the outer side of the top end of the bottom plate, and the top ends of the two buckle plates are fixedly connected to a slot plate, and the inner front ends of the two slot plates are threadedly connected to a threaded rod, and a reduction box is provided on the side of the threaded rod, and a third motor is provided at the rear end of the other side of the reduction box, and the inner rear ends of the two slot plates are sleeved with a light rod, and the center of the outer wall of the threaded rod is sleeved with a support pipe, and the top front and rear ends of the two slot plates are respectively The top ends of the plurality of support rods are rotatably connected to sliders, the top ends of the plurality of sliders are slidably connected to slide rails, the outer top ends of the slide rails are fixedly connected to a bottom frame, the bottom plate is fixedly connected to the inner bottom end of the water tank, the other side of the threaded rod is rotatably connected to the inner bottom end of one side of the water tank, the bottom ends of the reduction box and the third motor are fixedly connected to the other side of the inner bottom end of the water tank, the light rod is fixedly connected to the rear end of the bottom of the inner wall of the water tank, the bottom end of the support pipe is fixedly connected to the front end of the bottom of the inner wall of the water tank, and the bottom frame is fixedly connected to the bottom end of the sliding frame.

[0018] As a further solution of the present invention, both sides of the outer wall of the threaded rod are respectively processed with mutually symmetrical threads, and the front ends of the two groove plates are respectively processed with thread grooves matching the threaded rod.

[0019] Beneficial effects of the present invention:

[0020] (1) Through the cooperation of the water tank and the detection mechanism, the cast iron pipe fitting can be clamped to the inner side of the turntable and the clamping plate when the air tightness of the cast iron pipe fitting is tested, and the turntable can be driven to rotate by the first transmission wheel, thereby driving the supported cast iron pipe fitting to rotate, which is convenient for observing the cast iron pipe fitting, and there is no blind spot for observation;

[0021] (2) By cooperating with the air nozzle and the storage tank in the detection component, compressed air can be blown into the interior of the cast iron pipe fitting, and the dyeing powder filled in the storage tank can be blown into the interior of the cast iron pipe fitting at the same time as the compressed air is blown. By observing whether the test water in the water tank generates bubbles or dyeing, the air tightness of the cast iron pipe fitting can be detected, and tiny leaks can be detected, thereby improving the detection accuracy;

[0022] (3) Through the cooperation of the filtering mechanism and the color-absorbing paper, the dye powder that escapes into the test water can be adsorbed onto the color-absorbing paper, thereby purifying the test water in the water tank and keeping the water clear, which is convenient for the air tightness test of the cast iron pipe fittings. At the same time, the color-absorbing paper can be replaced conveniently and quickly to maintain the adsorption effect of the filtering mechanism on the dye powder in the test water;

[0023] (4) By setting up a lifting mechanism, the detection mechanism and the filter mechanism can be pushed out from the inside of the water tank, which is convenient for separating the cast iron pipes to be tested from the test water, and the adsorption paper in the filter mechanism can be replaced conveniently and quickly.

[0024] (5) Through the cooperation of the above-mentioned mechanisms, the air tightness test of cast iron pipe fittings of different specifications can be carried out. By blowing dye powder into the cast iron pipe fittings, it is possible to more clearly observe whether there are leaks in the cast iron pipe fittings, thereby avoiding some leaks that are difficult to find due to the small aperture. At the same time, it is convenient to mark the leaks, and it is also possible to adsorb the dye powder that enters the test water, so that the test water remains clear. The detection mechanism and the filter mechanism are raised from the top of the water tank, which is convenient for separating the tested cast iron pipe fittings from the water tank. At the same time, it is convenient to replace the color-absorbing paper in the filter mechanism to maintain the purification effect of the test water in the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the connection structure of a cast iron pipe air tightness detection device of the present invention;

[0026] Figure 2 The present invention Figure 1 Another schematic diagram of the axonometric connection structure of the detection mechanism, the filtering mechanism and the lifting mechanism;

[0027] Figure 3 The present invention Figure 1 Schematic diagram of the connection structure of the detection mechanism;

[0028] Figure 4 The present invention Figure 3 Schematic diagram of the connection structure of the detection components;

[0029] Figure 5 The present invention Figure 3 Another isometric connection structure schematic diagram;

[0030] Figure 6 The present invention Figure 5 Schematic diagram of the connection structure of the middle support member;

[0031] Figure 7 The present invention Figure 5 A schematic diagram of the partial side section connection structure of the middle support member;

[0032] Figure 8 The present invention Figure 5 A schematic diagram of a partially enlarged connection structure of a middle support member;

[0033] Fig. 9 The present invention Figure 2 Another isometric connection structure diagram of the filter mechanism;

[0034] Fig.10 The present invention Fig. 9 A partially enlarged schematic diagram of the connection structure of the filter mechanism with the sliding frame hidden;

[0035] Fig.11 The present invention Figure 2 Another schematic diagram of the axonometric connection structure of the middle lifting mechanism;

[0036] Fig.12 The present invention Fig.11 Another axonometric connection structure diagram.

[0037] In the figure: 1, base; 2, water tank; 3, detection mechanism; 301, detection box; 302, hydraulic rod; 303, chuck; 304, detection member; 3041, turntable; 3042, first transmission wheel; 3043, second transmission wheel; 3044, first motor; 3045, transmission belt; 3046, air nozzle; 3047, sleeve; 3048, storage tank; 305, support member; 3051, support; 3052, transmission shell; 3053, transmission rod; 3054, second motor; 3055, worm; 3056, turbine; 3057, screw rod; 3058, limit rod; 3059, threaded block; 30510, shell; 30511 , pneumatic ejector; 30512, wedge block; 30513, vertical rod; 30514, support rod; 30515, ball; 30516, pulley; 4, filtering mechanism; 401, sliding frame; 402, cross bar; 403, slide plate one; 404, slide plate two; 405, handle; 406, grid plate; 407, pressure plate; 408, rack one; 409, rack two; 410, gear; 5, lifting mechanism; 501, bottom plate; 502, buckle plate; 503, groove plate; 504, threaded rod; 505, reduction box; 506, third motor; 507, bare rod; 508, support tube; 509, support rod; 510, slider; 511, slide rail; 512, bottom frame. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of 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 are within the scope of protection of the present invention.

[0039] Embodiment 1

[0040] See also Figure 1-Figure 8 As shown, the present invention is a cast iron pipe fitting air tightness detection device, comprising a base 1, the base 1 is used to fix a water tank 2, the top of the base 1 is fixedly connected with a water tank 2, the water tank 2 is used to hold detection water, and a water inlet and a water outlet are respectively opened on one side of the bottom end of the front surface of the water tank 2, the water inlet is used to add detection water to the inside of the water tank 2, and the water outlet is used to discharge the detection water inside the water tank 2, and a detection mechanism 3 is arranged inside the water tank 2, and the detection mechanism 3 is used to perform air tightness detection on the cast iron pipe fitting;

[0041] The detection mechanism 3 includes a detection box 301, which is used to support the hydraulic rod 302, the detection member 304 and the support member 305. A plurality of hydraulic rods 302 are arranged on one side of the detection box 301, and the hydraulic rods 302 are used to drive the chuck 303 to move and apply pressure to the chuck 303. The sides of the plurality of hydraulic rods 302 are rotatably connected with the chuck 303, and the chuck 303 is used to block the side of the cast iron pipe fitting to be tested for air tightness, and to clamp the cast iron pipe fitting by cooperating with the detection member 304. A detection member 304 is arranged on the other side of the detection box 301, and the detection member 304 is used to support the other side of the cast iron pipe fitting, and can drive the cast iron pipe fitting to rotate, and blow compressed air into the inside thereof, so as to detect the air tightness of the cast iron pipe fitting. A support member 305 is arranged on the bottom end of the inner part of the detection box 301, and the support member 305 is used to support the bottom end of the cast iron pipe fitting.

[0042] The detection component 304 includes a rotating disk 3041, a first transmission wheel 3042 is fixedly connected to the side of the rotating disk 3041, the first transmission wheel 3042 is used to drive the rotating disk 3041 to rotate, a second transmission wheel 3043 is arranged at the front end of the first transmission wheel 3042, the second transmission wheel 3043 is used to drive the transmission belt 3045 to rotate, a first motor 3044 is threadedly connected to the side of the second transmission wheel 3043 through a flange, the first motor 3044 is set as a waterproof motor, the first motor 3044 is used to drive the second transmission wheel 3043 to rotate, the outer walls of the plurality of first transmission wheels 3042 and the second transmission wheels 3043 are sleeved with a transmission belt 3045, the transmission belt 3045 is used to drive the plurality of first transmission wheels 3042 to rotate synchronously, the internal rotation of the plurality of first transmission wheels 3042 is connected with an air nozzle 3046, the air nozzle 3046 is used to blow compressed air into the interior of the cast iron pipe fitting, the air nozzle A sleeve 3047 is sleeved on one side of the outer wall of 3046, and the sleeve 3047 is used to connect the storage tank 3048 with the air nozzle 3046. The bottom end of the sleeve 3047 is threadedly connected to the storage tank 3048, and the storage tank 3048 is used to store dyeing powder, and when the air nozzle 3046 blows compressed air into the cast iron pipe fitting, the dyeing powder can be blown into the cast iron pipe fitting together. The turntable 3041 is rotatably connected to the top of the other side of the detection box 301. The turntable 3041 is used to block the other side of the cast iron pipe fitting and can drive the cast iron pipe fitting to rotate. The first motor 3044 is fixedly connected to one side of the top of the front surface of the detection box 301, and the second transmission wheel 3043 is locked to the outer wall of the output shaft of the first motor 3044 through a coupling. The other side of the air nozzle 3046 is arranged at the center of the other side of the turntable 3041, and one side of the outer wall of the air nozzle 3046 is connected to the sleeve 3047.

[0043] In this embodiment, preferably, a plurality of rubber sealing rings are evenly processed inside the sides of the chuck 303 and the turntable 3041, and the inner diameter specifications of the rubber sealing rings increase from the inside to the outside. By processing rubber sealing rings inside the sides of the chuck 303 and the turntable 3041, the sealing performance of the chuck 303 and the turntable 3041 to the cast iron pipe fittings can be enhanced.

[0044] In this embodiment, preferably, the air outlet of the air nozzle 3046 is arranged at the center of the other side of the turntable 3041, and the air inlet of the air nozzle 3046 is connected with the external air source through a connecting pipe. Through the operation of the air nozzle 3046, compressed air can be blown into the interior of the cast iron pipe fitting, and the dyeing powder can be blown into the interior of the cast iron pipe fitting, which is convenient for detecting the air tightness of the cast iron pipe fitting and observing whether there is a leak.

[0045] In this embodiment, preferably, the interior of the storage tank 3048 is filled with dyeing powder. By filling the interior of the storage tank 3048 with dyeing powder, when the air nozzle 3046 blows compressed air into the interior of the cast iron pipe fitting, the dyeing powder can be blown into the interior of the cast iron pipe fitting. When the leakage point of the cast iron pipe fitting is small, the test water can be dyed by the dyeing powder, thereby facilitating marking the leakage point of the cast iron pipe fitting.

[0046] In this embodiment, preferably, the support member 305 includes a support 3051, and a transmission shell 3052 is fixedly connected to the inner side of the support 3051. The transmission shell 3052 is used to support the transmission rod 3053, the worm 3055 and the turbine 3056. The inner top of the transmission shell 3052 is penetrated by a transmission rod 3053, and the transmission rod 3053 is used to drive the worm 3055 to rotate. The front end of the transmission rod 3053 is locked on the output shaft of the second motor 3054 through a coupling. The second motor 3054 is used to drive the transmission rod 3053 to rotate. The outer wall of the transmission rod 3053 is evenly distributed with a plurality of worms 3055, the worms 3055 are used to drive the turbine 3056 to rotate, the bottom end of the worm 3055 is meshedly connected with the turbine 3056, the turbine 3056 is used to drive the screw rod 3057 to rotate, the side of the turbine 3056 is fixed with a screw rod 3057, the screw rod 3057 is used to drive the threaded block 3059 to move, and the side of the support 3051 is fixed with two limit rods 3058, the limit rods 3058 are used to limit the motion trajectory of the threaded block 3059, and can enhance The threaded block 3059 supports the outer shell 30510. The outer wall of the limit rod 3058 is slidably connected with the threaded block 3059. The threaded block 3059 is used to support the outer shell 30510 and can drive the outer shell 30510 to move. The support 3051 is fixed to the bottom end of one side of the inner wall of the detection box 301. The support 3051 is used to fix the transmission shell 3052. The rear end of the transmission rod 3053 is rotatably connected to the back side of the inner wall of the detection box 301. The second motor 3054 is threadedly connected to the front surface of the detection box 301 through a flange. At the bottom end of one side, the second motor 3054 is configured as a waterproof servo motor, which can drive the transmission rod 3053 to rotate in the forward direction or the reverse direction. Multiple worm gears 3055 are arranged on the inner top end of the transmission shell 3052, and the turbine 3056 is rotatably connected to the inner bottom end of the transmission shell 3052. The other side of the screw rod 3057 is rotatably connected to the bottom end of the other side of the inner wall of the detection box 301. The other side of the limit rod 3058 is also fixedly connected to the bottom end of the other side of the inner wall of the detection box 301. The inner bottom end of the threaded block 3059 is threadedly connected to the outer wall of the screw rod 3057.

[0047] In this embodiment, preferably, the support member 305 also includes a shell 30510, and a pneumatic push rod 30511 is fixedly connected to the center of the inner bottom end of the shell 30510, and the pneumatic push rod 30511 is used to drive the wedge block 30512 to rise and fall, and the top of the pneumatic push rod 30511 is fixedly connected to the wedge block 30512, and the wedge block 30512 is used to drive the pulley 30516 to move, and the top of the wedge block 30512 is fixedly connected to the vertical rod 30513, and the vertical rod 30513 is used to support the ball 30515 fixedly connected to the top thereof, and can drive the ball 30515 at the center to move, and the top of the shell 30510 is rotatably connected to two support rods 30514, and the two support rods 30514 are used to drive the ball 30515 fixedly connected to the top thereof. 0515 is moved, and the two support rods 30514 are symmetrically arranged with the vertical rod 30513 as the central axis. The top ends of the vertical rod 30513 and the two support rods 30514 are rotatably connected with balls 30515, and the balls 30515 are used to support the bottom end of the outer wall of the cast iron pipe fitting. The bottom ends of the two support rods 30514 are rotatably connected with pulleys 30516, and the pulleys 30516 are used to drive the two support rods 30514 to move. The outer shell 30510 is fixedly connected to the top of the threaded block 3059. The outer shell 30510 is used to support the two support rods 30514. The top end of the outer wall of the vertical rod 30513 is slidably connected to the inner center of the top end of the outer shell 30510, and the bottom end of the pulley 30516 is attached to the top end of the outer wall of the wedge block 30512.

[0048] In summary, when it is necessary to perform air tightness test on the cast iron pipe fitting, the cast iron pipe fitting is placed on the top of the supporting member 305, and then the hydraulic rod 302 is controlled to start working, driving the chuck 303 to clamp one side of the cast iron pipe fitting, and through the continuous operation of the hydraulic rod 302, the cast iron pipe fitting will be pushed to move continuously to the other side of the testing box 301 until the other side of the cast iron pipe fitting is buckled into the side inner part of the turntable 3041. Through the operation of the hydraulic rod 302, pressure can be applied to the chuck 303, so that the chuck 303 can clamp the cast iron pipe fitting to be tested through the mutual cooperation with the turntable 3041, and both ends of the cast iron pipe fitting are blocked to avoid leakage during the testing process, and then the air nozzle 3046 in the testing member 304 is connected to the The connecting pipe is connected to the external air source, so that compressed air can be blown into the interior of the cast iron pipe fitting through the air nozzle 3046. When the cast iron pipe fitting enters the water tank 2 and the water tank 2 is filled with water, while the air nozzle 3046 blows compressed air into the cast iron pipe fitting, when the compressed air passes through the sleeve 3047, it will drive the dyeing powder filled in the storage tank 3048 to be blown into the interior of the cast iron pipe fitting. If there is a leak in the cast iron pipe fitting, bubbles will be generated inside the water tank 2, and the surrounding test water will be dyed, which is convenient for detecting smaller leaks, thereby determining the location of the leak in the cast iron pipe fitting. On the contrary, if no bubbles are generated inside the water tank 2, it proves that there is no leak in the cast iron pipe fitting, so the cast iron pipe fitting can be checked. The air tightness of the cast iron pipe fittings can be tested. While compressed air is blown into the cast iron pipe fittings, the second transmission wheel 3043 can be driven to rotate through the operation of the first motor 3044. When the second transmission wheel 3043 rotates, the transmission belt 3045 sleeved on the outer wall thereof can drive multiple first transmission wheels 3042 to rotate simultaneously. When the first transmission wheel 3042 rotates, the turntable 3041 can be driven to rotate, thereby driving the cast iron pipe fittings fixed on the turntable 3041 and the inner side of the chuck 303 to rotate slowly, so as to facilitate observation of the cast iron pipe fittings. When performing air tightness tests on different cast iron pipe fittings, due to the different specifications of the cast iron pipe fittings, it is necessary to adjust the position of the threaded block 3059 in the support member 305, so as to better observe the cast iron pipe fittings. The bottom end of the outer wall is supported, and the second motor 3054 is connected to the external power supply through the connecting line. The operation of the second motor 3054 can drive the transmission rod 3053 to rotate, thereby driving the worm 3055 processed on its outer wall to rotate. When the worm 3055 rotates, the turbine 3056 meshing with the bottom end thereof can be synchronously driven to rotate at the same time, thereby driving the screw rod 3057 to rotate through the turbine 3056. When the screw rod 3057 rotates, the movement trajectory of the threaded block 3059 can be limited by the operation of the limit rod 3058, so that the threaded block 3059 maintains a linear motion, thereby driving the threaded block 3059 to move, and adjusting the position of the threaded block 3059. Then, through the operation of the pneumatic ejector 30511,It can drive the wedge block 30512 and the vertical rod 30513 to move upward. When the wedge block 30512 moves, it will drive the pulley 30516 attached to the top of its side to expand outward, so that the top of the support rod 30514 shrinks inward and the ball 30515 is attached to the bottom of the outer wall of the cast iron pipe fitting, so that cast iron pipe fittings of different specifications can be supported and the stability of the cast iron pipe fittings can be maintained when the cast iron pipe fittings are tested.

[0049] Embodiment 2

[0050] See also Figure 1-Figure 2 and Figure 9-10 As shown, on the basis of the first embodiment, a filtering mechanism 4 is provided at the bottom end of the detection mechanism 3, and the filtering mechanism 4 is used to adsorb the dye powder entering the detection water, thereby purifying the detection water and maintaining the clarity of the detection water, so as to facilitate the detection of the air tightness of the cast iron pipe fittings. The filtering mechanism 4 includes a sliding frame 401, and a cross bar 402 is fixedly connected to the inner center of the sliding frame 401, and the cross bar 402 is used to support the gear 410. A slide plate 403 is slidably connected to one side of the inner side of the sliding frame 401, and the sliding frame The other side of the interior of 401 is slidably connected with a slide plate 2 404, and the slide plates 1 403 and 404 are used to fix the grid plate 406 and can clamp the pressure plate 407. The outer centers of the slide plates 1 403 and 404 are fixed with handles 405, and the handles 405 are used to drive the slide plates 1 403 or 404 to slide. The inner bottom ends of the slide plates 1 403 and 404 are fixed with grid plates 406, and the grid plates 406 are used to support the color absorbing paper. A pressing plate 407 is provided at the top of 406, and the pressing plate 407 is used to clamp the color absorbing paper. The top front end and the top rear end of the other side of the slide plate 1 403 are fixedly connected with a rack 1 408, and the bottom front end and the bottom rear end of the other side of the slide plate 2 404 are fixedly connected with a rack 2 409. When the rack 1 408 slides, it will drive the gear 410 to rotate, thereby driving the rack 2 409 to slide in the opposite direction through the gear 410, or when the rack 2 409 slides, it will drive the gear 410 to rotate, thereby driving The movable rack 408 slides in opposite directions, and the front and rear ends of the cross bar 402 are rotatably connected to the gear 410. The sliding frame 401 is fixed to the bottom end of the detection box 301. The sliding frame 401 is used to fix the cross bar 402 and can limit the movement trajectory of the slide plate 403 and the slide plate 404. The pressure plate 407 is clamped on the inner top of the slide plate 403 and the slide plate 404. The top and bottom ends of the gear 410 are respectively meshed with the bottom end of the rack 1 408 and the top end of the rack 2 409.

[0051] In this embodiment, preferably, a layer of color-absorbing paper is provided on the top of the grid plate 406, and the pressing plate 407 is pressed on the top of the color-absorbing paper. The color-absorbing paper is used to absorb the dyeing powder that escapes into the test water, thereby purifying the test water and keeping the test water inside the water tank 2 clear.

[0052] In summary, when the cast iron pipe fittings are tested for air tightness, the dye powder that enters the water along with the compressed air can be adsorbed onto the color-absorbing paper in the filter mechanism 4, thereby filtering the test water in the water tank 2 to keep it clear, which is convenient for the subsequent air tightness testing of the remaining cast iron pipe fittings. When the color-absorbing paper has been used to a certain extent, the adsorption effect on the dye powder decreases. At this time, the color-absorbing paper needs to be replaced, and the slide plate 1 403 or the slide plate 2 404 is pulled by the handle 405, which can drive the rack 1 408 or the rack 2 409 to slide toward one side of the pulled slide plate 1 403 or the slide plate 2 404 at the same time. When one of the racks moves, such as when the rack 1 408 slides to one side, it will drive the gear 410 meshing with its bottom end to rotate at the same time, and when the gear 410 rotates, it will drive the rack 2 409 to slide to the other side, so as to prevent the gear 410 from rotating. And drive slide plate 2 404 to slide in the opposite direction of pulling slide plate 1 403 at the same time, so that slide plate 1 403 and slide plate 2 404 can slide out from the side of slide frame 401 at the same time, and then take out the pressing plate 407 connected to the inner side of the top of slide plate 1 403 and slide plate 2 404, and replace the color absorbing paper. After laying the new color absorbing paper on the top of grid plate 406, press plate 407 is again connected to the top of slide plate 1 403 and slide plate 2 404, and press plate 407 is pressed to the top of the color absorbing paper, and slide plate 1 403 is pushed toward the inside of slide frame 401, and through the cooperation of rack 1 408, rack 2 409 and gear 410, slide plate 1 403 and slide plate 2 404 can be slidably connected to the inner side of slide frame 401 again, thereby completing the replacement of color absorbing paper, which is convenient for maintaining the filtering effect of filtering mechanism 4 on the detected water in water tank 2.

[0053] Embodiment 3

[0054] See also Figure 1-Figure 2 and Figure 11-Figure 12As shown, on the basis of the first and second embodiments, a lifting mechanism 5 is provided at the bottom end of the filtering mechanism 4, and the lifting mechanism 5 is used to drive the detection mechanism 3 and the filtering mechanism 4 to be lifted and lowered as a whole at the internal top end of the water tank 2, so that the cast iron pipe fittings placed in the detection mechanism 3 can be separated from the water tank 2, or it is convenient to replace the color-absorbing paper in the filtering mechanism 4, and the lifting mechanism 5 includes a bottom plate 501, and two buckle plates 502 are slidably connected to the outer side of the top end of the bottom plate 501, and the buckle plates 502 are used to support the groove plates 503, and the top ends of the two buckle plates 502 are fixedly connected to the groove plates 503, and the groove plates 503 are used to drive the bottom ends of the support rods 509 The two slot plates 503 are connected to the front ends of the two slot plates 503 with threaded rods 504, which are used to drive the slot plates 503 to move. A reduction gearbox 505 is provided on the side of the threaded rod 504, which is used to drive the threaded rod 504 to rotate. A third motor 506 is provided at the rear end of the other side of the reduction gearbox 505, which is set as a waterproof servo motor. The third motor 506 is used to provide power to the reduction gearbox 505, so as to drive the threaded rod 504 to rotate in the positive direction or the reverse direction through the reduction gearbox 505. The rear ends of the two slot plates 503 are sleeved. There is a light rod 507, which is used to limit the movement trajectory of the slot plate 503. A support tube 508 is sleeved at the center of the outer wall of the threaded rod 504, and the support tube 508 is used to support the center of the threaded rod 504. The front and rear ends of the tops of the two slot plates 503 are rotatably connected with support rods 509, and the support rods 509 are used to drive the slider 510 to move and can prop the slider 510 upward. The tops of multiple support rods 509 are rotatably connected with sliders 510, and the sliders 510 are used to support the slide rails 511. The tops of multiple sliders 510 are slidably connected with slide rails 511, and the slide rails 511 are used to align the bottom The bottom end of the support pipe 508 is fixed to the front end of the bottom of the inner wall of the water tank 2, and the bottom frame 512 is fixed to the bottom end of the slide frame 401.

[0055] In this embodiment, preferably, symmetrical threads are processed on both sides of the outer wall of the threaded rod 504, and thread grooves matching the threaded rod 504 are processed inside the front ends of the two groove plates 503. When the threaded rod 504 rotates, the two groove plates 503 threadedly connected to its outer wall will be driven to slide in opposite directions, thereby driving the bottom end of the support rod 509 to close, thereby adjusting the support height of the support rod 509.

[0056] In summary, when it is necessary to lift the detection mechanism 3 from the water tank 2, or when it is necessary to replace the color-absorbing paper in the filter mechanism 4, the third motor 506 can provide power to the reduction box 505, thereby driving the threaded rod 504 to rotate through the reduction box 505. During the rotation of the threaded rod 504, the two groove plates 503 threadedly connected to its outer wall will be driven to slide in opposite directions, thereby driving the bottom end of the support rod 509 to retract inwardly. When the bottom end of the support rod 509 retracts inwardly, the top end of the support rod 509 will be propped up, thereby driving the slider 510 to slide at the bottom end of the slide rail 511 through the support rod 509, and the slide rail 511 can be propped up. In the process of the slide rail 511 being propped up upward, the bottom frame 512 will be driven to move upward at the same time, thereby the detection mechanism 3 and the filter mechanism 4 can be pushed out from the inner top of the water tank 2, which is convenient for separating the detection mechanism 3 from the detection water in the water tank 2 and for replacing the color-absorbing paper in the filter mechanism 4.

[0057] Embodiment 4

[0058] See also Figure 1-Figure 12As shown, the present embodiment is obtained by combining the first embodiment, the second embodiment and the third embodiment. When inspecting the cast iron pipe fitting, the position of the threaded block 3059 in the support member 305 is adjusted to a suitable position according to the length specification of the cast iron pipe fitting, so as to support the bottom end of the outer wall of the cast iron pipe fitting and improve the stability when inspecting the cast iron pipe fitting. At the same time, the pneumatic push rod 30511 is connected to the external air source through the connecting pipe. Through the operation of the pneumatic push rod 30511, the wedge block 30512 can be pushed upward. In the process of the wedge block 30512 moving upward, the pulley 30516 attached to the top of its outer wall will be driven to expand outward, thereby driving the top of the support rod 30514 to shrink inward until the ball 30514 fixed to the top of the support rod 30514 is pressed against the outer wall of the support rod 30514. 0515 is attached to the bottom end of the outer wall of the cast iron pipe fitting. When the wedge block 30512 moves upward, the vertical rod 30513 will also drive the ball 30515 fixed on its top to move and fit it to the outer wall of the cast iron pipe fitting. Through the cooperation between the three balls 30515, cast iron pipe fittings with different outer diameters can be supported, and the cast iron pipe fittings can be rotated on the inside, which is convenient for air tightness detection of the cast iron pipe fittings. After adjusting the supporting member 305, the chuck 303 can be driven to slide sideways through the operation of the hydraulic rod 302, so that the cast iron pipe fitting is clamped to the inner side of the chuck 303 and the turntable 3041. Through the cooperation between the air nozzle 3046 and the storage tank 3048 in the detection member 304, the air nozzle 3046 can be rotated. 046 is connected to the external air source through a connecting pipe. When the air nozzle 3046 blows compressed air into the inside of the cast iron pipe fitting, the dyeing powder filled in the storage tank 3048 will be blown into the inside of the cast iron pipe fitting together, so that the air tightness of the cast iron pipe fitting can be detected by observing whether the test water in the water tank 2 generates bubbles or whether the test water is dyed. By blowing the dyeing powder into the inside of the cast iron pipe fitting, it is possible to more clearly observe whether there are leaks in the cast iron pipe fitting, avoid some leaks that are difficult to find due to the small aperture, and at the same time facilitate marking the leaks. The first motor 3044, the second transmission wheel 3043 and the transmission belt 3045 work in coordination, so that the first transmission wheel 3042 can be driven to rotate, so that The turntable 3041 is driven to rotate simultaneously by the first transmission wheel 3042, thereby driving the cast iron pipe fittings clamped on the inner side of the turntable 3041 and the clamping plate 303 to rotate synchronously, which is convenient for observing the leakage point. By setting the filtering mechanism 4, the dyeing powder entering the test water can be adsorbed, so that the test water remains clear, which is convenient for testing the air tightness of the cast iron pipe fittings. When it is necessary to lift the detection mechanism 3, the third motor 506 in the lifting mechanism 5 can be used to drive the threaded rod 504 to rotate through the reduction box 505, thereby driving the bottom end of the support rod 509 to retract inward, so that the overall height of the support rod 509 is increased, and the detection mechanism 3 and the filtering mechanism 4 can be lifted from the top of the inner part of the water tank 2, so as to separate the tested cast iron pipe fittings from the water tank 2.At the same time, it is convenient to replace the color-absorbing paper in the filter mechanism 4 to maintain the purification effect of the test water in the water tank 2.

[0059] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of application of the present invention.

Claims

1. A cast iron pipe air tightness detection device, comprising a base (1), the top of which is fixedly connected to a water tank (2), characterized in that: A detection mechanism (3) is provided inside the water tank (2); The detection mechanism (3) comprises a detection box (301), a plurality of hydraulic rods (302) are arranged through one side of the detection box (301), the sides of the plurality of hydraulic rods (302) are rotatably connected with a clamping plate (303), a detection component (304) is arranged on the other side of the detection box (301), and a support component (305) is arranged at the inner bottom end of the detection box (301); The detection component (304) comprises a rotating disk (3041), a first transmission wheel (3042) is fixedly connected to the side of the rotating disk (3041), a second transmission wheel (3043) is arranged at the front end of the first transmission wheel (3042), a first motor (3044) is threadedly connected to the side of the second transmission wheel (3043) via a flange, a transmission belt (3045) is sleeved on the outer walls of the plurality of first transmission wheels (3042) and the second transmission wheels (3043), an air nozzle (3046) is rotatably connected to the inner sides of the plurality of first transmission wheels (3042), and the outer sides of the air nozzle (3046) are A sleeve (3047) is sleeved on one side of the wall, and a storage tank (3048) is threadedly connected to the bottom end of the sleeve (3047). The turntable (3041) is rotatably connected to the top of the other side of the detection box (301). The first motor (3044) is fixed to one side of the top of the front surface of the detection box (301). The second transmission wheel (3043) is locked to the outer wall of the output shaft of the first motor (3044) through a coupling. The other side of the air nozzle (3046) is arranged through the center of the other side of the turntable (3041), and one side of the outer wall of the air nozzle (3046) is connected to the sleeve (3047).

2. A cast iron pipe air tightness detection device according to claim 1, characterized in that: A plurality of rubber sealing rings are evenly processed inside the side surfaces of the chuck (303) and the rotating disk (3041), and the inner diameter specifications of the rubber sealing rings increase from the inside to the outside.

3. The air tightness detection device for cast iron pipe fittings according to claim 1, characterized in that: The air outlet of the air nozzle (3046) is arranged at the center of the other side of the turntable (3041), and the air inlet of the air nozzle (3046) is connected to an external air source through a connecting pipe.

4. The air tightness detection device for cast iron pipe fittings according to claim 1, characterized in that: The storage tank (3048) is filled with dyeing powder.

5. The air tightness detection device for cast iron pipe fittings according to claim 1, characterized in that: The support member (305) comprises a support (3051), the inner side of which is fixedly connected to a transmission housing (3052), the inner top end of which is penetrated by a transmission rod (3053), the front end of which is locked on the output shaft of the second motor (3054) through a coupling, a plurality of worms (3055) are evenly distributed on the outer wall of the transmission rod (3053), the bottom end of which is meshingly connected to a turbine (3056), the side of which is fixedly connected to a lead screw (3057), the side of which is fixedly connected to two limit rods (3058), the outer wall of which is slidably connected to a threaded block (3059), and the support (3051) is provided with a plurality of screws (3055) disposed on the outer wall of the transmission rod (3053). 051) is fixedly connected to the bottom end of one side of the inner wall of the detection box (301), the rear end of the transmission rod (3053) is rotatably connected to the back side of the inner wall of the detection box (301), the second motor (3054) is threadedly connected to the bottom end of one side of the front surface of the detection box (301) through a flange, the plurality of worms (3055) are all arranged at the inner top end of the transmission housing (3052), the turbine (3056) is rotatably connected to the inner bottom end of the transmission housing (3052), the other side of the lead screw (3057) is rotatably connected to the bottom end of the other side of the inner wall of the detection box (301), the other side of the limit rod (3058) is also fixedly connected to the bottom end of the other side of the inner wall of the detection box (301), and the inner bottom end of the threaded block (3059) is threadedly connected to the outer wall of the lead screw (3057).

6. A cast iron pipe air tightness detection device according to claim 5, characterized in that: The support member (305) further comprises a shell (30510), wherein a pneumatic push rod (30511) is fixedly connected at the center of the inner bottom end of the shell (30510), a wedge block (30512) is fixedly connected to the top end of the pneumatic push rod (30511), a vertical rod (30513) is fixedly connected to the top end of the wedge block (30512), and two support rods (30514) are rotatably connected to the top end of the shell (30510), wherein the vertical rod (30513) and The top ends of the two support rods (30514) are rotatably connected to balls (30515), the bottom ends of the two support rods (30514) are rotatably connected to pulleys (30516), the outer shell (30510) is fixed to the top of the threaded block (3059), the top end of the outer wall of the vertical rod (30513) is slidably connected to the inner center of the top end of the outer shell (30510), and the bottom end of the pulley (30516) is attached to the top end of the outer wall of the wedge block (30512).

7. The air tightness detection device for cast iron pipe fittings according to claim 1, characterized in that: A filtering mechanism (4) is provided at the bottom end of the detection mechanism (3), and the filtering mechanism (4) comprises a sliding frame (401), a cross bar (402) is fixedly connected at the inner center of the sliding frame (401), a sliding plate 1 (403) is slidably connected to one side of the inner part of the sliding frame (401), and a sliding plate 2 (404) is slidably connected to the other side of the inner part of the sliding frame (401), a handle (405) is fixedly connected at the outer center of the sliding plate 1 (403) and the sliding plate 2 (404), and a mesh plate (406) is fixedly connected to the inner bottom end of the sliding plate 1 (403) and the sliding plate 2 (404), and the top of the mesh plate (406) is provided with There is a pressure plate (407), the top front end and the top rear end of the other side of the slide plate one (403) are fixedly connected to a rack one (408), the bottom front end and the bottom rear end of the other side of the slide plate two (404) are fixedly connected to a rack two (409), the front end and the rear end of the cross bar (402) are rotatably connected to a gear (410), the slide frame (401) is fixedly connected to the bottom end of the detection box (301), the pressure plate (407) is clamped on the inner top end of the slide plate one (403) and the slide plate two (404), and the top and bottom ends of the gear (410) are respectively meshed with the bottom end of the rack one (408) and the top end of the rack two (409).

8. The air tightness detection device for cast iron pipe fittings according to claim 7, characterized in that: A layer of color absorbing paper is arranged on the top of the grid plate (406), and the pressing plate (407) is pressed on the top of the color absorbing paper.

9. The air tightness detection device for cast iron pipe fittings according to claim 1, characterized in that: A lifting mechanism (5) is provided at the bottom end of the filtering mechanism (4), and the lifting mechanism (5) comprises a bottom plate (501), two buckle plates (502) are slidably connected to the outer side of the top end of the bottom plate (501), the top ends of the two buckle plates (502) are fixedly connected to a slot plate (503), the inner front ends of the two slot plates (503) are threadedly connected to a threaded rod (504), a reduction box (505) is provided on the side of the threaded rod (504), and a third motor (506) is provided at the rear end of the other side of the reduction box (505), a smooth rod (507) is sleeved at the inner rear ends of the two slot plates (503), a support tube (508) is sleeved at the center of the outer wall of the threaded rod (504), and the top front ends and rear ends of the two slot plates (503) are rotatably connected to A support rod (509), the top ends of the plurality of support rods (509) are rotatably connected to a slider (510), the top ends of the plurality of sliders (510) are slidably connected to a slide rail (511), the outer top end of the slide rail (511) is fixedly connected to a bottom frame (512), the bottom plate (501) is fixedly connected to the inner bottom end of the water tank (2), the other side of the threaded rod (504) is rotatably connected to the inner bottom end of one side of the water tank (2), the bottom ends of the reduction box (505) and the third motor (506) are fixedly connected to the other side of the inner bottom end of the water tank (2), the bare rod (507) is fixedly connected to the rear end of the bottom of the inner wall of the water tank (2), the bottom end of the support pipe (508) is fixedly connected to the front end of the bottom of the inner wall of the water tank (2), and the bottom frame (512) is fixedly connected to the bottom end of the slide frame (401).

10. A cast iron pipe air tightness detection device according to claim 9, characterized in that: The outer walls of the threaded rod (504) are respectively processed with mutually symmetrical threads on both sides, and the front ends of the two groove plates (503) are respectively processed with thread grooves matching the threaded rod (504).

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