Valve service life testing machine

Abstract

The utility model discloses a valve service life testing machine, and belongs to the technical field of valve testing. Comprising a rack and a servo motor, a driving rod is arranged below the servo motor, a screwing mechanism is arranged outside the driving rod, the screwing mechanism comprises a rotating cylinder, the inner wall of the rotating cylinder is slidably connected with the driving rod, the inner wall of the rotating cylinder is fixedly connected with a rotating transverse rod, two long open grooves are formed in the rotating cylinder, and the rotating transverse rod is fixedly connected with the rotating transverse rod. The outer surface of the rotating transverse rod is in sliding connection with the inner wall of the long open groove, opening and closing of the valve can be achieved through cooperation of a servo motor, a driving rod and a screwing mechanism, and through cooperation of a three-way air inlet communicating pipe, a high-pressure electromagnetic valve, a low-pressure electromagnetic valve, an air outlet communicating pipe and an outlet electromagnetic valve, the valve can be opened and closed. Pressure testing and recording of the valve can be achieved, the automation degree is high, and it is avoided that workers need to carry out many steps to affect the testing of the valve.

Description

Technical Field

[0001] The utility model relates to the technical field of valve testing, in particular to a valve life testing machine. Background Art

[0002] Valves are mechanical products that withstand internal pressure, so they must have sufficient strength and rigidity to ensure long-term use without cracking or deformation. During the production and design process, valve life tests are required to obtain data on the number of normal opening and closing times and the pressure that the valve can withstand during normal use. Since valve life tests generally take a long time, special equipment is required for testing.

[0003] At present, the degree of automation is low when testing the life of valves, and most steps require manual participation. Manual participation will result in a high error rate, which will affect the efficiency of valve life testing and cause a high scrap rate. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the existing technology has a low degree of automation and most steps require manual participation, which will result in a high error rate, thereby affecting the detection efficiency of the valve life and causing a high scrap rate. A valve life testing machine is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A valve life tester comprises a frame and a servo motor, a driving rod is arranged below the servo motor, a screwing mechanism is arranged outside the driving rod, the screwing mechanism comprises a rotating cylinder, the inner wall of the rotating cylinder is slidably connected to the driving rod, a rotating cross bar is fixedly connected to the inner wall of the rotating cylinder, two long slots are arranged inside the rotating cylinder, the outer surface of the rotating cross bar is slidably connected to the inner wall of the long slots, an extended curved rod is fixedly connected to the inner wall of the rotating cylinder, two threaded sleeves are threadedly connected to the outer surface of the extended curved rod, a lower mounting plate is fixedly connected to the bottom surface of the column, The lower mounting plate is fixedly connected to the frame, and a placing table is installed on the upper surface of the lower mounting plate, and a valve body to be tested is placed above the placing table. The air inlet end of the valve body to be tested is connected with a three-way air inlet connecting pipe, and one end of the three-way air inlet connecting pipe away from the valve body to be tested is respectively connected with a high-pressure solenoid valve and a low-pressure solenoid valve, an inlet pressure sensor is installed on the inner wall of the three-way air inlet connecting pipe, the air outlet end of the valve body to be tested is connected with an air outlet connecting pipe, an outlet pressure sensor is installed on the inner wall of the air outlet connecting pipe, and the air outlet end of the air outlet connecting pipe is connected with an outlet solenoid valve.

[0007] Preferably, a connecting block is connected to the outer surface of the servo motor, and the outer surface of the connecting block is connected to the driving rod.

[0008] Preferably, a column is provided inside the frame, an upper mounting plate is fixedly connected to the upper surface of the column, the upper mounting plate is fixedly connected to the frame, and the servo motor is installed inside the upper mounting plate.

[0009] Preferably, a reinforcing plate is fixedly connected to the outer surface of the column, and the outer surface of the reinforcing plate is fixedly connected to the upper mounting plate.

[0010] Preferably, a touch screen integrated machine is installed on the inner wall of the rack, and a cabinet door is installed on the inner wall of the rack.

[0011] Compared with the prior art, the utility model provides a valve life tester, which has the following beneficial effects:

[0012] 1. The utility model can realize the opening and closing of the valve by using the cooperation between the servo motor, the driving rod and the twisting mechanism, and can realize the pressure test and recording of the valve by using the cooperation between the three-way air inlet connecting pipe, the high-pressure solenoid valve, the low-pressure solenoid valve, the air outlet connecting pipe and the outlet solenoid valve. The automation degree is high, which avoids the need for workers to perform more steps to affect the test of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the back structure of the utility model;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the utility model column, upper mounting plate, reinforcing plate, servo motor, lower mounting plate and placement table;

[0016] Figure 4 For this utility model Figure 3 A in the enlarged view;

[0017] Figure 5 This is a working principle diagram of the utility model.

[0018] In the figure:

[0019] 1. Frame; 2. Column; 3. Upper mounting plate; 4. Reinforcement plate; 5. Servo motor; 6. Connection block; 7. Driving rod; 8. Twisting mechanism; 801. Rotating cylinder; 802. Extending bent rod; 803. Threaded sleeve; 804. Long slot; 9. Rotating cross bar; 10. Lower mounting plate; 11. Placement table; 12. Valve body to be tested; 13. Three-way air inlet connecting pipe; 14. High-pressure solenoid valve; 15. Low-pressure solenoid valve; 16. Import pressure sensor; 17. Air outlet connecting pipe; 18. Export solenoid valve; 19. Export pressure sensor; 20. Touch screen all-in-one machine; 21. Cabinet door. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-5 A valve life testing machine includes a frame 1 and a servo motor 5. The frame 1 is made of stainless steel and welded as a whole. A driving rod 7 is arranged below the servo motor 5. A twisting mechanism 8 is arranged outside the driving rod 7. The twisting mechanism 8 includes a rotating cylinder 801. A groove matching the driving rod 7 is provided inside the rotating cylinder 801, which can facilitate the sliding of the rotating cylinder 801 outside the driving rod 7.

[0022] The inner wall of the rotating cylinder 801 is slidably connected to the driving rod 7 , and a rotating cross bar 9 is fixedly connected to the inner wall of the rotating cylinder 801 . By using the rotating cross bar 9 , the rotating cylinder 801 can be driven to rotate when the driving rod 7 rotates.

[0023] Two long slots 804 are provided inside the rotating cylinder 801 , and the outer surface of the rotating cross bar 9 is slidably connected to the inner wall of the long slots 804 . The provision of the long slots 804 can facilitate the sliding of the rotating cross bar 9 .

[0024] An extended curved rod 802 is fixedly connected to the inner wall of the rotating cylinder 801, and two threaded sleeves 803 are threadedly connected to the outer surface of the extended curved rod 802. By rotating the threaded sleeves 803, the two threaded sleeves 803 can be better contacted with the valve switch to be tested, so that the threaded sleeves 803 can better open and close the valve to be tested.

[0025] A lower mounting plate 10 is fixedly connected to the bottom surface of the column 2, and the lower mounting plate 10 is fixedly connected to the frame 1. A placing table 11 is installed on the upper surface of the lower mounting plate 10. By using the lower mounting plate 10, the placing table 11 can be supported. A valve body 12 to be tested is placed above the placing table 11. By using the placing table 11, the valve body 12 to be tested can be conveniently placed.

[0026] The air inlet end of the valve body 12 to be tested is connected to a three-way air inlet connecting pipe 13, and one end of the three-way air inlet connecting pipe 13 away from the valve body 12 to be tested is respectively connected to a high-pressure solenoid valve 14 and a low-pressure solenoid valve 15, the two inlet ends of the three-way air inlet connecting pipe 13 are respectively connected to the high-pressure solenoid valve 14 and the low-pressure solenoid valve 15, and the outlet end is connected to the three-way air inlet connecting pipe 13, the high-pressure solenoid valve 14 and the low-pressure solenoid valve 15 respectively control the entry of high-pressure and low-pressure gases, and the external air pressure is 10-15Mpa.

[0027] An inlet pressure sensor 16 is installed on the inner wall of the three-way air intake connecting pipe 13 . By using the inlet pressure sensor 16 , the air injection state of the three-way air intake connecting pipe 13 to the valve body 12 to be tested can be observed.

[0028] The air outlet end of the valve body 12 to be tested is connected to an air outlet connecting pipe 17 , and both the three-way air inlet connecting pipe 13 and the air outlet connecting pipe 17 are made of stainless steel.

[0029] An outlet pressure sensor 19 is installed on the inner wall of the outlet connecting pipe 17, and the outlet end of the outlet connecting pipe 17 is connected to an outlet solenoid valve 18. By using the outlet solenoid valve 18, gas exposure can be avoided, so that the outlet pressure sensor 19 can accurately detect the air pressure value leaked from the valve body 12 to be tested. The inlet pressure sensor 16 and the outlet pressure sensor 19 use high-pressure sensors 15Mpa with an accuracy of 0.5%.

[0030] The outer surface of the servo motor 5 is connected to a connecting block 6, and the outer surface of the connecting block 6 is connected to the driving rod 7. By using the connecting block 6, the output end of the servo motor 5 can be connected to the driving rod 7. The connecting block 6 is connected to the servo motor 5 and the connecting block 6 through the through hole and the connecting rod respectively, which is convenient for early installation and later disassembly.

[0031] A column 2 is provided inside the frame 1, and an upper mounting plate 3 is fixedly connected to the upper surface of the column 2. The upper mounting plate 3 is fixedly connected to the frame 1, and the servo motor 5 is installed inside the upper mounting plate 3. The upper mounting plate 3 is used to reinforce the frame 1, so that the servo motor 5 can be installed more firmly.

[0032] A reinforcing plate 4 is fixedly connected to the outer surface of the column 2 , and the outer surface of the reinforcing plate 4 is fixedly connected to the upper mounting plate 3 . By using the reinforcing plate 4 , the connection between the column 2 and the upper mounting plate 3 can be strengthened.

[0033] A touch screen all-in-one machine 20 is installed on the inner wall of the rack 1. By using the touch screen all-in-one machine 20, various detection components can be controlled. This is an existing mature technology. A cabinet door 21 is installed on the inner wall of the rack 1. By using the cabinet door 21, the rack 1 can be protected. The entire device should be connected to a power supply with a voltage of AC220V / 50HZ; 50W.

[0034] Working principle: When the valve needs to be tested, first open the cabinet door 21, place the valve on the placement table 11, slide the rotating cylinder 801 to make the threaded sleeve 803 extend into the interior of the valve switch to be tested, and connect the three-way air inlet connecting pipe 13 and the air outlet connecting pipe 17 to the valve to be tested respectively. Start the servo motor 5, which can drive the connecting block 6, the driving rod 7 and the rotating cross bar 9 to rotate, and then drive the long slot 804, the rotating cylinder 801, the extended curved rod 802 and the two long slots 804 to rotate, so that the valve to be tested can be automatically closed. By starting the high-pressure solenoid valve 14, high-pressure gas can be passed into the interior of the valve body 12 to be tested, and the value displayed by the outlet pressure sensor 19 can be observed to determine whether it is qualified. Close the high-pressure solenoid valve 14 and start the low-pressure solenoid valve 15, so that low-pressure gas can be passed into the interior of the three-way air inlet connecting pipe 13, and the value displayed by the outlet pressure sensor 19 can be observed to determine whether it is qualified. After the test is completed, reversely start the servo motor 5 and open the outlet solenoid valve 18 to exhaust, and a test can be completed.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0037] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A valve life tester, comprising a frame (1), a column (2) and a servo motor (5), characterized in that: A driving rod (7) is arranged below the servo motor (5), and a screwing mechanism (8) is arranged outside the driving rod (7), and the screwing mechanism (8) includes a rotating cylinder (801), the inner wall of the rotating cylinder (801) is slidably connected to the driving rod (7), the inner wall of the rotating cylinder (801) is fixedly connected to a rotating cross bar (9), the interior of the rotating cylinder (801) is provided with two long slots (804), the outer surface of the rotating cross bar (9) is slidably connected to the inner wall of the long slot (804), the inner wall of the rotating cylinder (801) is fixedly connected to an extended curved rod (802), the outer surface of the extended curved rod (802) is threadedly connected to two threaded sleeves (803), the bottom surface of the column (2) is fixedly connected to a lower mounting plate (10), and the lower mounting plate (10 ) is fixedly connected to the frame (1), a placing table (11) is installed on the upper surface of the lower mounting plate (10), a valve body (12) to be tested is placed above the placing table (11), an air inlet end of the valve body (12) to be tested is connected to a three-way air inlet connecting pipe (13), one end of the three-way air inlet connecting pipe (13) away from the valve body (12) to be tested is respectively connected to a high-pressure solenoid valve (14) and a low-pressure solenoid valve (15), an inlet pressure sensor (16) is installed on the inner wall of the three-way air inlet connecting pipe (13), an air outlet end of the valve body (12) to be tested is connected to an air outlet connecting pipe (17), an outlet pressure sensor (19) is installed on the inner wall of the air outlet connecting pipe (17), and an outlet end of the air outlet connecting pipe (17) is connected to an outlet solenoid valve (18).

2. A valve life tester according to claim 1, characterized in that: The outer surface of the servo motor (5) is connected to a connecting block (6), and the outer surface of the connecting block (6) is connected to a driving rod (7).

3. A valve life tester according to claim 1, characterized in that: A column (2) is provided inside the frame (1); an upper mounting plate (3) is fixedly connected to the upper surface of the column (2); the upper mounting plate (3) is fixedly connected to the frame (1); and the servo motor (5) is mounted inside the upper mounting plate (3).

4. A valve life tester according to claim 3, characterized in that: The outer surface of the column (2) is fixedly connected to a reinforcing plate (4), and the outer surface of the reinforcing plate (4) is fixedly connected to the upper mounting plate (3).

5. A valve life tester according to claim 1, characterized in that: A touch screen integrated machine (20) is installed on the inner wall of the frame (1), and a cabinet door (21) is installed on the inner wall of the frame (1).

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