Air tightness detection device for inner water pipe

Abstract

The utility model discloses an air tightness detection device for an inner water pipe. The air tightness detection device comprises a water pipe fixing frame, a plurality of plugs, a compressed air control valve and a pressure transmitter, the water pipe fixing frame comprises a pipe head fixing clamp, a pipe tail fixing clamp and a middle fixing clamp. The middle fixing clamp is located between the pipe head fixing clamp and the pipe tail fixing clamp. The plurality of telescopic plugs are divided into two groups, one plug is provided with a compressed air input channel, and an input port of the compressed air input channel is positioned on the peripheral surface of the plug; the plug facing the pipe head fixing clamp is used for stretching into and sealing a water outlet hole located in the pipe head of the inner water pipe, and the plug facing the pipe tail fixing clamp is used for stretching into and sealing a water inlet located in the pipe tail of the inner water pipe. The input port of the compressed air input channel is communicated with the output end of the compressed air control valve so as to input compressed air; and the detection end of the pressure transmitter is communicated with the output end of the compressed air control valve. The inner water pipe is prevented from being damaged due to shaking in the detection process, and the working efficiency of detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pipe detection, in particular to an air tightness detection device for an inner water pipe. Background Art

[0002] The inner water pipe used for the dishwasher spray arm is a built-in water supply pipe. The inner water pipe is made of an injection-molded upper inner water pipe piece and a lower inner water pipe piece welded together. The middle part of the inner water pipe is bent 90°. Two water outlet holes are provided on the side of the pipe head of the inner water pipe, and the open bottom surface of the pipe tail of the inner water pipe is the water inlet.

[0003] If the two water outlets are sealed manually using a jig, and then another jig inserted into the water inlet is manually held and compressed air is input into the inner water pipe to detect whether the inner water pipe is leaking, the inner water pipe is prone to shaking during inflation, which can easily cause the inner water pipe to hit nearby objects and be damaged, and the detection efficiency is low. Utility Model Content

[0004] In view of the above-mentioned shortcomings, the purpose of the present invention is to provide an airtightness detection device for inner water pipes, so as to solve the problems that the inner water pipes are easily shaken and damaged during the detection process, and the detection efficiency is low.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] An air tightness detection device for an internal water pipe comprises a water pipe fixing frame, a plurality of plugs, a compressed air control valve and a pressure transmitter;

[0007] The water pipe fixing bracket includes a pipe head fixing clamp, a pipe tail fixing clamp and a middle fixing clamp; the pipe head fixing clamp, the middle fixing clamp, the pipe tail fixing clamp, the pressure transmitter, the compressed air control valve and a plurality of plugs are respectively installed on the top surface of the operating table, and the middle fixing clamp is located between the pipe head fixing clamp and the pipe tail fixing clamp;

[0008] The plug is retractable, and the plurality of plugs are divided into two groups, and the two groups of plugs are respectively arranged toward the pipe head fixing clamp and the pipe tail fixing clamp; one of the plugs is provided with a compressed air input channel, the input port of the compressed air input channel is located on the outer peripheral surface of the plug, and the output port of the compressed air input channel is located at one end of the plug facing the pipe head fixing clamp or the pipe tail fixing clamp;

[0009] The plug facing the pipe head fixing clamp is used to extend into and seal the water outlet of the pipe head located at the inner water pipe, and the plug facing the pipe tail fixing clamp is used to extend into and seal the water inlet located at the pipe tail of the inner water pipe;

[0010] The input port of the compressed air input channel is connected to the output end of the compressed air control valve to input compressed air into the inner water pipe to be detected; the detection end of the pressure transmitter is connected to the output end of the compressed air control valve.

[0011] Furthermore, a plurality of drivers are included;

[0012] The plurality of drivers are divided into two groups, and the two groups of drivers are respectively installed close to the tube head fixing clamp and the tube tail fixing clamp;

[0013] The plug is installed at the output end of the corresponding driver.

[0014] Furthermore, it also includes a start switch and a plurality of solenoid valves;

[0015] The plurality of solenoid valves are arranged adjacent to each other, and the plurality of solenoid valves are electrically connected to the start switch respectively;

[0016] The plurality of solenoid valves are electrically connected to the plurality of drivers in a one-to-one correspondence.

[0017] Furthermore, it also includes a touch screen display and a signal display;

[0018] The touch screen display and the signal display are respectively mounted on the operating table;

[0019] The signal display is equipped with two signal lights representing qualified information and unqualified information;

[0020] The start switch, the signal display, the compressed air control valve, the pressure transmitter, the plurality of solenoid valves and the plurality of drivers are respectively connected to the touch screen display screen signal.

[0021] Furthermore, it also includes a power box;

[0022] The power box is installed under the operating table. The power box is equipped with a power supply for providing electric power to the touch display screen, the signal display, the compressed air control valve, the pressure transmitter, multiple solenoid valves and multiple drivers, as well as an air source device for providing compressed air to the compressed air control valve.

[0023] Furthermore, it also includes a barometer;

[0024] The pressure gauge is installed on the top surface of the operating table, and is used to display the pressure value of the air source delivered by the power box to the compressed air control valve.

[0025] Furthermore, the water pipe fixing frame further includes a bend fixing clamp;

[0026] The bend fixing clamp is installed on the top surface of the operating table; the bend fixing clamp is located between the pipe tail fixing clamp and the middle fixing clamp;

[0027] The bent portion fixing clamp is used to clamp the bent portion of the inner water pipe.

[0028] Furthermore, two inspection stations are provided on the top surface of the operating table, the power box and the touch screen are common facilities of the two inspection stations, and the remaining components of the two inspection stations are configured in the same manner.

[0029] The beneficial effects of the technical solution of the present utility model are as follows: the air tightness detection device for inner water pipes, the pipe head, middle part and pipe tail of the inner water pipe are fixed to the top surface of the operating table by the pipe head fixing clamp, the middle part fixing clamp and the pipe tail fixing clamp respectively, and compressed air is input into the inner water pipe through the compressed air control valve and the compressed air input channel located at one of the plugs, which can prevent the inner water pipe from shaking during the detection process and improve the detection work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of an embodiment of the air tightness detection device for an inner water pipe of the present utility model;

[0031] Figure 2 for Figure 1 An enlarged view of part A;

[0032] Figure 3 for Figure 1 An enlarged view of part B;

[0033] Among them: water pipe fixing frame 1; driver 2; compressed air control valve 3; pressure transmitter 4; solenoid valve 5; barometer 6; touch screen 7; signal display 8; start switch 9; inner water pipe 10; pipe head fixing clamp 11; pipe tail fixing clamp 12; plug 21; power box 101; compressed air input channel 210. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 The technical solution of the utility model is further illustrated through specific implementation methods.

[0035] The accompanying drawings are for illustrative purposes only and are not to be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings.

[0036] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted" and "connected" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium, which can be said to be the internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood by those skilled in the art in specific circumstances.

[0037] An air tightness detection device for an internal water pipe comprises a water pipe fixing frame 1, a plurality of plugs 21, a compressed air control valve 3 and a pressure transmitter 4;

[0038] The water pipe fixing bracket 1 includes a pipe head fixing clamp 11, a pipe tail fixing clamp 12, and a middle fixing clamp 13; the pipe head fixing clamp 11, the middle fixing clamp 13, the pipe tail fixing clamp 12, the pressure transmitter 4, the compressed air control valve 3, and a plurality of plugs 21 are respectively installed on the top surface of the operating table 100, and the middle fixing clamp 13 is located between the pipe head fixing clamp 11 and the pipe tail fixing clamp 12;

[0039] The plug 21 is retractable, and the plurality of plugs 21 are divided into two groups, with the two groups of plugs 21 being respectively arranged toward the pipe head fixing clamp 11 and the pipe tail fixing clamp 12; one of the plugs 21 is provided with a compressed air input channel 210, the input port of the compressed air input channel 210 being located on the outer peripheral surface of the plug 21, and the output port of the compressed air input channel 210 being located at one end of the plug 21 facing the pipe head fixing clamp 11 or the pipe tail fixing clamp 12;

[0040] The plug 21 facing the pipe head fixing clamp 11 is used to extend into and seal the water outlet at the pipe head of the inner water pipe 10, and the plug 21 facing the pipe tail fixing clamp 12 is used to extend into and seal the water inlet at the pipe tail of the inner water pipe 10;

[0041] The input port of the compressed air input channel 210 is connected to the output end of the compressed air control valve 3 to input compressed air to the inner water pipe 10 to be detected; the detection end of the pressure transmitter 4 is connected to the output end of the compressed air control valve 3.

[0042] Figure 1This is a structural schematic diagram of the air tightness detection device for inner water pipes of the present invention. The operating table 100 in the figure is provided with two detection stations for detecting the air tightness of the inner water pipe 10. The inner water pipe 10 is a built-in water pipe for the spray arm of a dishwasher. The inner water pipe 10 is welded by two injection-molded parts of an upper inner water pipe sheet and a lower inner water pipe sheet. The middle part of the inner water pipe 10 is bent at 90°. Two water outlets are provided on the side of the pipe head of the inner water pipe 10, and the open bottom surface of the pipe tail of the inner water pipe 10 is a water inlet.

[0043] When in use, the pipe head clamp of the inner water pipe 10 is mounted on the pipe head fixing clamp 11, so that the two water outlet holes of the inner water pipe 10 are respectively facing the corresponding plugs 21, and the middle part and the tail of the inner water pipe 10 are respectively clamped on the middle fixing clamp 13 and the tail fixing clamp 12, so that the water inlet of the tail of the inner water pipe 10 is facing the corresponding plug 21, and then each plug 21 is pushed to make each plug 21 extend into and seal the water inlet and the two water outlet holes of the inner water pipe 10, and then the compressed air control valve 3 is started, and compressed air is input into the inner water pipe 10 through the compressed air input channel 210 located at one of the plugs 21. When the compressed air in the inner water pipe 10 reaches After the set detection pressure is reached, stop inputting compressed air into the inner water pipe 10 and maintain the pressure for a period of time. When the pressure transmitter 4 detects that the pressure reduction value of the compressed air during the pressure maintenance period is less than the set process threshold, it is considered that the air tightness of the inner water pipe 10 being tested is qualified; conversely, when the pressure transmitter 4 detects that the pressure reduction value of the compressed air during the pressure maintenance period is greater than the set process threshold, it is considered that the air tightness of the inner water pipe 10 being tested is unqualified. After completing the air tightness test of one inner water pipe 10, push each plug 21 back and reset it, and then take out the inner water pipe 10 that has completed the test, and continue to perform air tightness test on the next inner water pipe 10.

[0044] During the above process, the head, middle and tail of the inner water pipe 10 are fixed to the top surface of the operating table 100 by the head fixing clamp 11, the middle fixing clamp 13 and the tail fixing clamp 12 respectively, which can prevent the inner water pipe 10 from shaking during the detection process; then, compressed air is input into the inner water pipe 10 through the compressed air control valve 3 and the compressed air input channel 210 located at one of the plugs 21, without the need for manual operation, which can improve the work efficiency of the detection.

[0045] Furthermore, it also includes a plurality of drivers 2;

[0046] The multiple drivers 2 are divided into two groups, and the two groups of drivers 2 are installed close to the pipe head fixing clamp 11 and the pipe tail fixing clamp 12 respectively;

[0047] The plug 21 is installed at the corresponding output end of the driver 2 .

[0048] like Figure 1-3As shown, a corresponding plug 21 is installed at the output end of each driver 2. By controlling the opening and closing of the driver 2, the extension and retraction of the corresponding plug 21 can be controlled, which can improve the convenience of the detection operation.

[0049] It should be noted that Figure 1 The two plugs 21 for sealing the two water outlets of the inner water pipe 10 are driven by two drivers 2 respectively. In actual applications, one driver 2 can also be used to drive the two plugs 21 to move synchronously.

[0050] The driver 2 is preferably a telescopic cylinder.

[0051] Furthermore, it also includes a start switch 9 and a plurality of solenoid valves 5;

[0052] The plurality of solenoid valves 5 are arranged adjacent to each other, and the plurality of solenoid valves 5 are electrically connected to the start switch 9 respectively;

[0053] The plurality of solenoid valves 5 are electrically connected to the plurality of drivers 2 in a one-to-one correspondence.

[0054] like Figure 1 and Figure 2 As shown, the start switch 9 can control multiple drivers 2 to start synchronously through multiple solenoid valves 5, which can improve the working efficiency of detection.

[0055] Furthermore, it also includes a touch screen display 7 and a signal display 8;

[0056] The touch screen display 7 and the signal display 8 are respectively mounted on the operating table 100;

[0057] The signal display 8 is equipped with two signal lights representing qualified information and unqualified information;

[0058] The start switch 9 , the signal display 8 , the compressed air control valve 3 , the pressure transmitter 4 , the plurality of solenoid valves 5 and the plurality of drivers 2 are respectively connected to the touch screen 7 for signal transmission.

[0059] like Figure 1 and Figure 2 As shown, the start interval time of the solenoid valve 5, the driver 2 and the compressed air control valve 3 after the start switch 9 is turned on can be set through the touch screen 7, and the status information corresponding to each component can be displayed. After receiving the model feedback from the pressure transmitter 4, the touch screen 7 sends a qualified or unqualified information to the signal display 8, so that the signal display 8 lights up the corresponding signal light, providing a visual indication for the detection work.

[0060] Furthermore, it also includes a power box 101;

[0061] The power box 101 is installed below the operating table 100. The power box 101 is equipped with a power supply for providing electric power to the touch screen 7, the signal display 8, the compressed air control valve 3, the pressure transmitter 4, multiple solenoid valves 5 and multiple drivers 2, as well as an air source device for providing compressed air to the compressed air control valve 3.

[0062] like Figure 1 As shown, a power box 101 is installed below the operating table 100 to provide power and / or air source for corresponding components, which can improve the convenience of use of the air tightness detection device for inner water pipes.

[0063] Furthermore, a barometer 6 is included;

[0064] The barometer 6 is mounted on the top surface of the operating table 100 , and is used to display the pressure value of the air source delivered by the power box 101 to the compressed air control valve 3 .

[0065] like Figure 1 and Figure 3 As shown, the pressure gauge 6 can be used to see whether the pressure of the compressed air delivered to the compressed air control valve 3 meets the requirements of the detection standard, so as to ensure the validity of the detection result.

[0066] Furthermore, the water pipe fixing frame 1 further includes a bend fixing clamp 14;

[0067] The bend fixing clamp 14 is installed on the top surface of the operating table 100; the bend fixing clamp 14 is located between the pipe tail fixing clamp 12 and the middle fixing clamp 13;

[0068] The bend fixing clamp 14 is used to clamp the bend portion of the inner water pipe 10 .

[0069] like Figure 1 and Figure 3 As shown, the middle portion and the curved portion of the inner water pipe 10 are fixed by the middle portion fixing clamp 13 and the curved portion fixing clamp 14 , which can improve the installation stability of the inner water pipe 10 during the inspection process.

[0070] Furthermore, two inspection stations are provided on the top surface of the operating table 100 , the power box 101 and the touch screen 7 are common facilities of the two inspection stations, and the remaining components of the two inspection stations are configured in the same manner.

[0071] like Figure 1 As shown, the air tightness detection device for inner water pipes provided with two detection stations has higher detection efficiency.

[0072] In summary, if Figure 1-3In the embodiment of the utility model shown, the air tightness detection device for the inner water pipe, the pipe head, middle part and pipe tail of the inner water pipe 10 are respectively fixed to the top surface of the operating table 100 by the pipe head fixing clamp 11, the middle part fixing clamp 13 and the pipe tail fixing clamp 12, and compressed air is input into the inner water pipe 10 through the compressed air control valve 3 and the compressed air input channel 210 located at one of the plugs 21, which can prevent the inner water pipe 10 from shaking during the detection process and improve the detection work efficiency.

[0073] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. An air tightness detection device for an inner water pipe, characterized in that: Includes water pipe fixing bracket, multiple plugs, compressed air control valve and pressure transmitter; The water pipe fixing bracket includes a pipe head fixing clamp, a pipe tail fixing clamp and a middle fixing clamp; the pipe head fixing clamp, the middle fixing clamp, the pipe tail fixing clamp, the pressure transmitter, the compressed air control valve and a plurality of plugs are respectively installed on the top surface of the operating table, and the middle fixing clamp is located between the pipe head fixing clamp and the pipe tail fixing clamp; The plug is retractable, and the plurality of plugs are divided into two groups, and the two groups of plugs are respectively arranged toward the pipe head fixing clamp and the pipe tail fixing clamp; one of the plugs is provided with a compressed air input channel, the input port of the compressed air input channel is located on the outer peripheral surface of the plug, and the output port of the compressed air input channel is located at one end of the plug facing the pipe head fixing clamp or the pipe tail fixing clamp; The plug facing the pipe head fixing clamp is used to extend into and seal the water outlet of the pipe head located at the inner water pipe, and the plug facing the pipe tail fixing clamp is used to extend into and seal the water inlet located at the pipe tail of the inner water pipe; The input port of the compressed air input channel is connected to the output end of the compressed air control valve to input compressed air into the inner water pipe to be detected; the detection end of the pressure transmitter is connected to the output end of the compressed air control valve.

2. The air tightness detection device for inner water pipes according to claim 1, characterized in that: Also included are multiple drives; The plurality of drivers are divided into two groups, and the two groups of drivers are respectively installed close to the tube head fixing clamp and the tube tail fixing clamp; The plug is installed at the output end of the corresponding driver.

3. The air tightness detection device for an inner water pipe according to claim 2, characterized in that: Also included are a start switch and multiple solenoid valves; The plurality of solenoid valves are arranged adjacent to each other, and the plurality of solenoid valves are electrically connected to the start switch respectively; The plurality of solenoid valves are electrically connected to the plurality of drivers in a one-to-one correspondence.

4. The air tightness detection device for inner water pipes according to claim 3, characterized in that: Also includes a touch screen display and signal display; The touch screen display and the signal display are respectively mounted on the operating table; The signal display is equipped with two signal lights representing qualified information and unqualified information; The start switch, the signal display, the compressed air control valve, the pressure transmitter, the plurality of solenoid valves and the plurality of drivers are respectively connected to the touch screen display screen signal.

5. The air tightness detection device for inner water pipes according to claim 4, characterized in that: Also includes power box; The power box is installed under the operating table. The power box is equipped with a power supply for providing electric power to the touch display screen, the signal display, the compressed air control valve, the pressure transmitter, multiple solenoid valves and multiple drivers, as well as an air source device for providing compressed air to the compressed air control valve.

6. The air tightness detection device for inner water pipes according to claim 5, characterized in that: Also includes a barometer; The pressure gauge is installed on the top surface of the operating table, and is used to display the pressure value of the air source delivered by the power box to the compressed air control valve.

7. The air tightness detection device for an inner water pipe according to claim 1, characterized in that: The water pipe fixing frame also includes a bend fixing clamp; The bend fixing clamp is installed on the top surface of the operating table; the bend fixing clamp is located between the pipe tail fixing clamp and the middle fixing clamp; The bent portion fixing clamp is used for clamping the bent portion of the inner water pipe.

8. The air tightness detection device for an inner water pipe according to claim 5, characterized in that: Two inspection stations are provided on the top surface of the operating table. The power box and the touch screen are common facilities of the two inspection stations, and the remaining components of the two inspection stations are configured in the same manner.

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