Steel cylinder airtightness inspection device

Abstract

The invention relates to the technical field of steel cylinder detection, and discloses a steel cylinder airtightness detection device which comprises a detection seat, a guide cylinder fixedly mounted on one side of the upper end of the detection seat, an L-shaped frame mounted in the guide cylinder, an air pressure detection mechanism arranged at the upper end of the L-shaped frame, and a rotating shaft rotatably mounted on the detection seat. The bottom of the rotating shaft penetrates through the inspection seat and is provided with a lifting mechanism used for driving the air pressure inspection mechanism to work, a rotating cylinder is rotatably installed at the upper end of the rotating shaft, a rotating round block is fixedly installed at the upper end of the rotating cylinder, an inspection shaft is fixedly installed on the rotating round block, and an inspection table is fixedly installed at the upper end of the inspection shaft. A plurality of pool barrels are arranged at the edge of the upper end of the inspection table, steel cylinders to be inspected are placed in the pool barrels, and a rotating mechanism used for driving the rotating table to move is further arranged on the inspection base. According to the invention, the time loss caused by shutdown for loading and unloading the steel cylinders during each inspection is avoided, and the requirement of continuous airtight inspection of large-batch steel cylinders is met.

Description

Technical Field

[0001] The invention relates to the technical field of steel cylinder detection, and in particular to a steel cylinder air tightness inspection device. Background Art

[0002] In practical applications, there are high requirements for the sealing of steel cylinders. The general method for testing the sealing of steel cylinders is to inject pressurized air into the sealing area of ​​the product, and then immerse the entire steel cylinder in a large water pool. By observing whether there are bubbles coming out, it can be judged whether it is sealed or not. If bubbles come out, it is judged that the airtightness of the steel cylinder is not good.

[0003] The existing inspection device usually includes a water pool, and a gas filling pipe is connected to the water pool. When inspecting a steel cylinder, the steel cylinder is placed in the water pool and connected to the gas filling pipe, and high-pressure gas is filled into the steel cylinder. After the inspection of a steel cylinder is completed, the steel cylinder is taken out and a new steel cylinder is put in. The above operation method is cumbersome, and a lot of time is wasted in taking and placing the steel cylinder, which cannot meet the needs of air tightness inspection of large quantities of steel cylinders. Therefore, further improvement is needed. Summary of the invention

[0004] The object of the present invention is to provide a gas-tightness testing device for a steel cylinder to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A gas-tightness inspection device for steel cylinders comprises an inspection seat, a guide cylinder is fixedly mounted on one side of the upper end of the inspection seat, an L-shaped frame is mounted inside the guide cylinder, an air pressure inspection mechanism is arranged on the upper end of the L-shaped frame, a rotating shaft is rotatably mounted on the inspection seat, a lifting mechanism for driving the air pressure inspection mechanism to work is arranged at the bottom of the rotating shaft passing through the inspection seat, a rotating cylinder is rotatably mounted on the upper end of the rotating shaft, a rotating round block is fixedly mounted on the upper end of the rotating cylinder, an inspection shaft is fixedly mounted on the rotating round block, an inspection table is fixedly mounted on the upper end of the inspection shaft, a plurality of water tanks are arranged on the upper edge of the inspection table, steel cylinders to be inspected are placed inside the water tanks, and a rotating mechanism for driving the inspection table to move is also arranged on the inspection seat.

[0006] As an improved solution of the present invention: support legs are installed at the four corners of the bottom of the inspection seat.

[0007] As an improved solution of the present invention: the lifting mechanism includes a plurality of connecting frames fixed at the bottom of the rotating shaft, a connecting ring cylinder with a hollow structure is connected to the outside of the connecting frame, an upper flat groove is provided on one side of the bottom of the connecting ring cylinder, and a lower flat groove is provided on the other side, a transition inclined groove is connected between the upper flat groove and the lower flat groove, and the lifting mechanism also includes abutment assembly.

[0008] As an improved solution of the present invention: the abutment assembly includes an abutment frame symmetrically fixed at the bottom of the inspection seat, a swing frame is rotatably installed between the bottom of the abutment frame, an abutment ball is arranged at one end of the swing frame, the abutment ball is in contact and cooperate with the bottom of the connecting ring tube, and the other end of the swing frame away from the abutment ball is in contact with a lifting ball, and the lifting ball is fixed at the bottom position of the L-shaped frame.

[0009] As an improved solution of the present invention: the air pressure testing mechanism includes an air duct fixed on an L-shaped frame, a pressure gauge is installed on the air duct, a pressure valve is installed at the bottom of the air duct, an air pressure tube is installed at one end of the air duct away from the pressure valve, a control valve is connected to the air pressure tube, the control valve is installed on an air pressure tank, the air pressure tank is fixed on the testing seat, and the air pressure testing mechanism also includes a control component.

[0010] As an improved solution of the present invention: the control assembly includes a control box installed on an L-shaped frame, a control line is installed on the control box, and the control line is electrically connected to a control valve.

[0011] As an improved solution of the present invention: the rotating mechanism includes a plurality of rotating frames fixed on the outer wall of the rotating round block, a rotating groove is provided on the rotating frame, a rotating ring is fixedly installed on the rotating frame away from the outer wall of the rotating round block, and the same number of limiting arc blocks as the rotating frame are fixedly installed at the bottom edge of the rotating circle. The rotating mechanism also includes a rotating assembly.

[0012] As an improved solution of the present invention: the rotating assembly includes an inspection motor fixed at the bottom of the inspection seat, the output end of the inspection motor is connected to a transmission shaft rotatably arranged on the inspection seat, a transmission frame is fixedly installed on the transmission shaft, a transmission column is fixedly installed at the end of the transmission frame, the transmission column is slidably matched with the rotating groove, a transmission fan block is fixedly installed at one end of the transmission frame away from the transmission column, and the transmission fan block is rotationally contacted with the limit arc block.

[0013] As an improved solution of the present invention: the pool bucket is made of transparent material and is filled with water.

[0014] As an improved solution of the present invention: a driving gear is also installed on the transmission shaft, and a driven gear fixed on the rotating shaft is meshed on the outer side of the driving gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the rotation mechanism and the coordination between multiple water tanks, the time loss caused by stopping the machine to load and unload the cylinders during each inspection is avoided, meeting the needs of continuous airtightness inspection of large quantities of cylinders; 2. Through the cooperation of the lifting mechanism and the airtightness inspection mechanism, the automatic airtightness inspection of the cylinder is realized, which greatly improves the inspection efficiency, has strong practicality and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the present invention; Figure 3 It is a bottom view structural schematic diagram of the present invention; Figure 4 It is a structural schematic diagram of the lifting mechanism in the present invention; Figure 5 It is a structural schematic diagram of the airtightness inspection mechanism in the present invention; Figure 6 It is a schematic diagram of the top view of the rotating mechanism in the present invention; Figure 7 It is a front view structural schematic diagram of the rotating mechanism in the present invention; Figure 8 It is a bottom view structural schematic diagram of the rotating mechanism in the present invention; Fig. 9 It is a schematic diagram of the structure of the connecting ring cylinder in the present invention.

[0017] In the figure: 1. inspection seat; 2. support leg; 3. air pressure tank; 4. inspection table; 5. pool bucket; 6. guide cylinder; 7. L-shaped frame; 8. lifting ball; 9. abutment frame; 10. swing frame; 11. abutment ball; 12. connecting ring cylinder; 13. connecting frame; 14. upper flat groove; 15. transition inclined groove; 16. lower flat groove; 17. air pressure pipe; 18. control valve; 19. control line; 20. control box; 21. air pressure gauge; 22. air guide pipe; 23. pressure valve; 24. transmission column; 25. rotating circle; 26. rotating circle; 27. inspection shaft; 28. rotating frame; 29. ​​rotating groove; 30. limit arc block; 31. transmission frame; 32. transmission fan block; 33. driving gear; 34. transmission shaft; 35. driven gear; 36. rotating shaft; 37. rotating cylinder; 38. inspection motor. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Example

[0022] See also Figures 1 to 9 In an embodiment of the present invention, a gas-tightness inspection device for a steel cylinder comprises an inspection seat 1, a guide cylinder 6 is fixedly mounted on one side of the upper end of the inspection seat 1, an L-shaped frame 7 is mounted inside the guide cylinder 6, an air pressure inspection mechanism is arranged on the upper end of the L-shaped frame 7, and a rapid air-tightness inspection of the steel cylinder is realized by introducing gas into the steel cylinder by using a water sinking method, a rotating shaft 36 is rotatably mounted on the inspection seat 1, a lifting mechanism for driving the gas pressure inspection mechanism to work is arranged at the bottom of the rotating shaft 36 passing through the inspection seat 1, a rotating cylinder 37 is rotatably mounted on the upper end of the rotating shaft 36, a rotating round block 26 is fixedly mounted on the upper end of the rotating cylinder 37, an inspection shaft 27 is fixedly mounted on the rotating round block 26, an inspection table 4 is fixedly mounted on the upper end of the inspection table 4, a plurality of water tanks 5 are arranged at the edge position of the upper end of the inspection table 4, a steel cylinder to be inspected is placed inside the water tank 5, and a rotating mechanism for driving the movement of the inspection table 4 is also arranged on the inspection seat 1, and the rotating mechanism is used to realize the horizontal 90° intermittent rotation of the steel cylinder to be inspected placed inside the water tank 5.

[0023] In order to achieve support and positioning of the entire testing device, support legs 2 are installed at the four corners of the bottom of the testing seat 1.

[0024] In order to meet the needs of continuous air tightness detection of the cylinder on the inspection table 4 in a rotating state, in this embodiment, the lifting mechanism includes a plurality of connecting frames 13 fixed at the bottom of the rotating shaft 36, and the outer side of the connecting frame 13 is connected to a connecting ring tube 12 with a hollow structure. An upper flat groove 14 is provided on one side of the bottom of the connecting ring tube 12, and a lower flat groove 16 is provided on the other side. A transition inclined groove 15 is connected between the upper flat groove 14 and the lower flat groove 16, and the lifting mechanism also includes a butt assembly.

[0025] Among them, the abutment assembly includes an abutment frame 9 symmetrically fixed at the bottom of the inspection seat 1, and a swing frame 10 is rotatably installed between the bottom of the abutment frame 9. An abutment ball 11 is arranged at one end of the swing frame 10. The abutment ball 11 contacts and cooperates with the bottom of the connecting ring tube 12. The other end of the swing frame 10 away from the abutment ball 11 contacts with a lifting ball 8, and the lifting ball 8 is fixed at the bottom position of the L-shaped frame 7.

[0026] The working principle of the above-mentioned lifting mechanism is: during the rotation of the connecting ring tube 12, the lower flat groove 16 and the upper flat groove 14 arranged at its bottom position will continuously contact the abutment ball 11. When the lower flat groove 16 moves to the position of the abutment ball 11, the swing frame 10 will rotate at a certain angle under the limiting action of the abutment frame 9. Then, with the cooperation of the lifting ball 8, the L-shaped frame 7 will move downward, and finally drive the air pressure testing mechanism to fill a certain pressure of high-pressure gas into the corresponding position of the cylinder, which will prepare for the subsequent air tightness test of the cylinder.

[0027] In order to quickly perform air tightness detection on the steel cylinder, the water sinking method is adopted in this embodiment, and the specific configuration is as follows: the air pressure inspection mechanism includes an air guide tube 22 fixed on the L-shaped frame 7, and a pressure gauge 21 is installed on the air guide tube 22. A pressure valve 23 is installed at the bottom of the air guide tube 22, and an air pressure tube 17 is installed at one end of the air guide tube 22 away from the pressure valve 23. A control valve 18 is connected to the air pressure tube 17, and the control valve 18 is installed on the air pressure tank 3. The air pressure tank 3 is fixed on the inspection seat 1, and the air pressure inspection mechanism also includes a control component.

[0028] The control assembly includes a control box 20 installed on the L-shaped frame 7 , a control line 19 is installed on the control box 20 , and the control line 19 is electrically connected to a control valve 18 .

[0029] The working principle of the above-mentioned air pressure testing mechanism is as follows: after the steel cylinder reaches the corresponding position, the L-shaped frame 7 will move downward, and finally the pressure valve 23 will be connected with the air inlet port provided on the steel cylinder. Then, under the action of the control box 20 and the control valve 18, the high-pressure gas inside the air pressure tank 3 will be introduced into the steel cylinder through the air pressure pipe 17, finally ensuring that a certain pressure of gas can be stored inside the steel cylinder.

[0030] In order to realize intermittent rotation of the inspection table 4, in this embodiment, the rotation mechanism includes a plurality of rotating frames 28 fixed on the outer wall of the rotating block 26, and a rotating groove 29 is provided on the rotating frame 28. The rotating frame 28 is fixedly installed with a rotating circle 25 away from the outer wall of the rotating block 26, and the bottom edge of the rotating circle 25 is fixedly installed with the same number of limiting arc blocks 30 as the rotating frame 28. The rotation mechanism also includes a rotating component.

[0031] Among them, the rotating assembly includes an inspection motor 38 fixed at the bottom of the inspection seat 1, the output end of the inspection motor 38 is connected to a transmission shaft 34 rotatably arranged on the inspection seat 1, a transmission frame 31 is fixedly installed on the transmission shaft 34, a transmission column 24 is fixedly installed at the end of the transmission frame 31, the transmission column 24 is slidably matched with the rotating groove 29, and a transmission fan block 32 is fixedly installed at one end of the transmission frame 31 away from the transmission column 24, and the transmission fan block 32 is rotatably contacted with the limit arc block 30.

[0032] The working principle of the above-mentioned rotating mechanism is: start the inspection motor 38 to rotate the transmission shaft 34, thereby driving the transmission frame 31 to rotate synchronously, and the transmission fan block 32 and the transmission column 24 set on the transmission frame 31 will also rotate synchronously. When the transmission column 24 moves to the internal position of two mutually perpendicular rotation grooves 29, it will drive the entire rotating circle 26 to rotate synchronously by 90°, and then under the action of the inspection shaft 27, the entire inspection table 4 will rotate synchronously by 90° intermittently. After that, the transmission frame 31 continues to rotate, which will cause the transmission fan block 32 to move to the position of the limit arc block 30. At this time, the entire inspection table 4 does not rotate, thereby ultimately ensuring the intermittent rotation of the cylinder placed on the inspection table 4.

[0033] In order to conduct an effective water sinking method air tightness test on the steel cylinder, in this embodiment, the water pool bucket 5 is made of a transparent material and is filled with water. This ensures that the staff can more clearly judge from the outside of the water pool bucket 5 whether the steel cylinder inside the water pool bucket 5 will produce bubbles, thereby judging whether the air tightness of the steel cylinder is good. Example

[0034] In addition, in order to further reduce the motor cost of the entire inspection device, so that the rotating mechanism can drive the lifting mechanism to work together while moving, the present invention also provides another embodiment, which is different from the above embodiment in that a driving gear 33 is also installed on the transmission shaft 34, and a driven gear 35 fixed on the rotating shaft 36 is meshed on the outer side of the driving gear 33, and the size specifications of the driving gear 33 and the driven gear 35 are consistent, so that it can be ensured that when the transmission shaft 34 rotates one circle, the rotating shaft 36 will also rotate the same number of circles. At this time, the consistency of the descent of the L-shaped frame 7 and the movement time of the cylinder can be ensured.

[0035] In summary, see Figure 1 , the staff stands in the front position of the entire inspection seat 1, and then starts the inspection motor 38. After that, with the cooperation of the rotating mechanism, the entire inspection table 4 rotates 90° counterclockwise in the horizontal position. When the cylinder just moves to the lower side of the pressure valve 23, the cylinder will stop for a while. At this time, under the action of the lifting mechanism, the entire L-shaped frame 7 will move down, and with the cooperation of the air pressure detection mechanism, gas is filled into the cylinder at this position. After the gas is filled, the inspection table 4 continues to rotate. Since the above process is completed automatically, the staff does not need to take additional actions. They only need to observe whether the cylinder in front of them generates bubbles inside the water tank bucket 5 after rotating three quarters of a circle. If bubbles are generated, the cylinder will be marked. If no bubbles are generated, the cylinder will be removed, and then the new cylinder to be tested will continue to repeat the inspection operation in the next step.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas-tightness testing device for a steel cylinder, comprising a testing seat (1), characterized in that: A guide cylinder (6) is fixedly mounted on one side of the upper end of the inspection seat (1), an L-shaped frame (7) is mounted inside the guide cylinder (6), and an air pressure inspection mechanism is arranged on the upper end of the L-shaped frame (7). A rotating shaft (36) is rotatably mounted on the inspection seat (1), and a lifting mechanism for driving the air pressure inspection mechanism is arranged at the bottom of the rotating shaft (36) passing through the inspection seat (1). A rotating cylinder (37) is rotatably mounted on the upper end of the rotating shaft (36), a rotating round block (26) is fixedly mounted on the upper end of the rotating cylinder (37), and an inspection shaft (27) is fixedly mounted on the rotating round block (26). An inspection table (4) is fixedly mounted on the upper end of the inspection table (4), and a plurality of water tanks (5) are arranged at the upper edge of the inspection table (4), and steel cylinders to be inspected are placed inside the water tanks (5). The inspection seat (1) is also provided with a rotating mechanism for driving the inspection table (4) to move.

2. A gas-tightness testing device for steel cylinders according to claim 1, characterized in that: Support legs (2) are installed at the four corners of the bottom of the inspection seat (1).

3. A gas-tightness testing device for steel cylinders according to claim 2, characterized in that: The lifting mechanism comprises a plurality of connecting frames (13) fixed at the bottom of the rotating shaft (36); a connecting ring tube (12) with a hollow structure is connected to the outside of the connecting frame (13); an upper flat groove (14) is provided on one side of the bottom of the connecting ring tube (12); and a lower flat groove (16) is provided on the other side; a transition inclined groove (15) is provided between the upper flat groove (14) and the lower flat groove (16); and the lifting mechanism further comprises an abutment assembly.

4. A gas-tightness testing device for steel cylinders according to claim 3, characterized in that: The abutment assembly comprises an abutment frame (9) symmetrically fixed to the bottom of the inspection seat (1), a swing frame (10) is rotatably mounted between the bottom of the abutment frame (9), an abutment ball (11) is arranged at one end of the swing frame (10), the abutment ball (11) and the bottom of the connecting ring tube (12) are in contact with each other, and the other end of the swing frame (10) away from the abutment ball (11) is in contact with a lifting ball (8), and the lifting ball (8) is fixed at the bottom position of the L-shaped frame (7).

5. A gas-tightness testing device for steel cylinders according to claim 4, characterized in that: The air pressure testing mechanism comprises an air guide tube (22) fixed on the L-shaped frame (7), a pressure gauge (21) being installed on the air guide tube (22), a pressure valve (23) being installed at the bottom of the air guide tube (22), an air pressure tube (17) being installed at one end of the air guide tube (22) away from the pressure valve (23), a control valve (18) being connected to the air pressure tube (17), the control valve (18) being installed on an air pressure tank (3), and the air pressure tank (3) being fixed on the testing seat (1). The air pressure testing mechanism also comprises a control component.

6. A gas-tightness testing device for steel cylinders according to claim 5, characterized in that: The control assembly comprises a control box (20) mounted on an L-shaped frame (7), a control line (19) being mounted on the control box (20), and the control line (19) being electrically connected to a control valve (18).

7. A gas-tightness testing device for a steel cylinder according to claim 6, characterized in that: The rotating mechanism comprises a plurality of rotating frames (28) fixed to the outer wall of the rotating circular block (26), the rotating frames (28) being provided with rotating grooves (29), the rotating frames (28) being fixedly mounted with a rotating ring (25) away from the outer wall of the rotating circular block (26), the bottom edge of the rotating ring (25) being fixedly mounted with the same number of limiting arc blocks (30) as the rotating frames (28), and the rotating mechanism further comprising a rotating assembly.

8. A gas-tightness testing device for steel cylinders according to claim 7, characterized in that: The rotating assembly comprises an inspection motor (38) fixed to the bottom of the inspection seat (1), the output end of the inspection motor (38) is connected to a transmission shaft (34) rotatably arranged on the inspection seat (1), a transmission frame (31) is fixedly mounted on the transmission shaft (34), a transmission column (24) is fixedly mounted on the end of the transmission frame (31), the transmission column (24) is slidably engaged with the rotating groove (29), a transmission fan block (32) is fixedly mounted on one end of the transmission frame (31) away from the transmission column (24), and the transmission fan block (32) is rotatably engaged with the limit arc block (30).

9. A gas-tightness testing device for steel cylinders according to claim 8, characterized in that: The water pool bucket (5) is made of a transparent material and is filled with water.

10. A gas-tightness testing device for steel cylinders according to claim 9, characterized in that: A driving gear (33) is also mounted on the transmission shaft (34), and a driven gear (35) fixed on the rotating shaft (36) is meshed on the outer side of the driving gear (33).

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