Sealing detection device for fuel filter

Abstract

The utility model discloses a fuel filter sealing detection device, which relates to the technical field of detection devices and comprises a detection pool, a threaded rod is fixed at one end of the top in the detection pool, a sliding rod is fixed at the other end of the top in the detection pool, an internal thread adjusting cylinder is in threaded connection with the threaded rod, and an air pipe is arranged at one end of the bottom in the detection pool. A blocking rod is arranged at the other end of the bottom in the detection pool, rotating mechanisms are connected to the gas pipe and the blocking rod, and the gas pipe and one rotating mechanism are matched with the blocking rod, the other rotating mechanism, a threaded rod, a sliding rod, a fixing frame and an internal thread adjusting cylinder for use, so that the gas detection device can rotate in gas detection after the fuel filter is clamped; therefore, detection personnel can penetrate through all positions of the filtering filter paper and the end cover through rotation, the problem of detection blind areas caused by shielding is avoided, and operation is easy and convenient.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a fuel filter sealing detection device. Background Technology

[0002] After the fuel filter is manufactured, samples are taken for sealing tests. There are two main types of filter sealing tests: one is gas testing, which uses gas to detect changes in gas pressure to determine if there is a problem with insufficient sealing; the other is oil testing, which involves immersing the filter in an oil bath, filling one end with gas and sealing the other end, and observing whether there are tiny bubbles in the oil bath to determine if there is a problem with insufficient sealing. This method is mainly for testing the sealant between the paper core and the end cap.

[0003] In the process of implementing this solution, the inventors discovered the following problems in the existing technology that have not been well resolved: When implementing the second method, only one side can generally be observed. Due to the obstruction of the pool wall and the fasteners, it is difficult to observe the lower half, which makes it difficult to detect tiny air bubbles in the blind area, resulting in inaccurate sealing detection. Utility Model Content

[0004] The main purpose of this invention is to provide a fuel filter sealing detection device, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A fuel filter seal testing device includes a testing chamber. A threaded rod is fixed to one end of the top of the testing chamber, and a sliding rod is fixed to the other end of the top of the testing chamber. An internally threaded adjusting cylinder is threaded onto the threaded rod. An air pipe is provided at one end of the bottom of the testing chamber, and a plug rod is provided at the other end of the bottom of the testing chamber. A rotating mechanism is connected to both the air pipe and the plug rod. The rotating mechanism includes a turntable. A sealed bearing is installed inside the turntable. A sleeve is fixed to one side wall of the turntable. An annular plug plate is fixed to the end of the sleeve away from the turntable. Fixing frames are fixed to both ends of the outer wall of the plug rod away from the rotating mechanism. Two sliding double sleeves are fixed to one fixing frame away from the plug rod, and a sliding single sleeve is fixed to the other fixing frame away from the plug rod. A sliding tube is fixed to the inner wall of the testing chamber at the end of the plug rod away from the air pipe.

[0007] Preferably, the air tube and the plug rod are respectively bonded to a sealing bearing that matches the position after passing through it, and the air tube and the plug rod are respectively rotatably connected to the turntable through the sealing bearing.

[0008] Preferably, a sealing ring is bonded to the side of the annular plug plate away from the sleeve.

[0009] Preferably, the end of the plug rod away from the rotating mechanism and the fixed frame is inserted into the inside of the slide tube and slidably connected thereto.

[0010] Preferably, the sliding double sleeves are both sleeved on the outer wall of the threaded rod, and the internal thread adjusting cylinder is located between the sliding double sleeves, with the two side walls of the internal thread adjusting cylinder respectively contacting the side of the sliding double sleeve that is closest to it.

[0011] Preferably, the sliding single sleeve is fitted onto the outer wall of the slide rod and slidably connected to it.

[0012] Preferably, a tube frame is fixedly mounted on the outer wall of the end of the trachea away from the rotating mechanism, and the end of the tube frame away from the trachea is mounted on the detection pool.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The air tube, along with one of the rotating mechanisms, a plug rod, another rotating mechanism, a threaded rod, a sliding rod, a fixing bracket, and an internal threaded adjusting cylinder, can rotate during gas detection after the fuel filter is clamped. This allows the testing personnel to rotate through the entire area of ​​the filter paper and end cap, avoiding blind spots caused by obstruction. The operation is simple and convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the fuel filter sealing detection device of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between one of the rotating mechanisms of the fuel filter sealing detection device of this utility model and the air pipe after the explosion.

[0017] Figure 3 This is a schematic diagram of the connection structure between the other rotating mechanism and the plug rod after the explosion of the fuel filter sealing detection device of this utility model.

[0018] Figure 4 This is an enlarged structural diagram of point A of the fuel filter sealing detection device of this utility model.

[0019] In the diagram: 1. Detection pool; 2. Air pipe; 21. Pipe rack; 3. Plug rod; 31. Slide tube; 4. Rotating mechanism; 41. Turntable; 42. Sealed bearing; 43. Sleeve; 44. Annular plug plate; 45. Sealing ring; 5. Threaded rod; 6. Slide rod; 7. Fixing frame; 81. Sliding single sleeve; 82. Sliding double sleeve; 9. Internal threaded adjusting cylinder. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figure 1-4 As shown, the fuel filter sealing test device includes a test chamber 1. A threaded rod 5 is fixed at one end of the top of the test chamber 1, and a sliding rod 6 is fixed at the other end of the top of the test chamber 1. An internal threaded adjusting cylinder 9 is threadedly connected to the threaded rod 5. An air pipe 2 is provided at one end of the bottom of the test chamber 1, and a plug rod 3 is provided at the other end of the bottom of the test chamber 1. A rotating mechanism 4 is connected to both the air pipe 2 and the plug rod 3. The rotating mechanism 4 includes a turntable 41. A sealed bearing 42 is installed inside the turntable 41. A sleeve 43 is fixed to one side wall of the turntable 41. An annular plug plate 44 is fixed to the end of the sleeve 43 away from the turntable 41. Fixing brackets 7 are fixed to both ends of the outer wall of the plug rod 3 away from the rotating mechanism 4. Two sliding double sleeves 82 are fixed to one end of the fixing bracket 7 away from the plug rod 3, and a sliding single sleeve 81 is fixed to the other end of the fixing bracket 7 away from the plug rod 3. A sliding tube 31 is fixed to the inner wall of the test chamber 1 at the end of the plug rod 3 away from the air pipe 2.

[0022] Specifically, the air tube 2 and the plug rod 3 are respectively bonded to the sealing bearing 42 that matches the position. The air tube 2 and the plug rod 3 are rotatably connected to the turntable 41 through the sealing bearing 42, so that the stability of the air tube 2 and the plug rod 3 will not be affected when the turntable 41 rotates.

[0023] Specifically, sealing rings 45 are bonded to the side of the annular plug plate 44 away from the sleeve 43 to ensure a tight seal when the end cap is fitted.

[0024] Specifically, the end of the blocking rod 3 away from the rotating mechanism 4 and the fixed frame 7 is inserted into the inside of the slide tube 31 and slidably connected thereto, so that the movement of the blocking rod 3 is horizontal.

[0025] Specifically, the sliding double sleeves 82 are both sleeved on the outer wall of the threaded rod 5, and the internal thread adjusting cylinder 9 is located between the sliding double sleeves 82. The two side walls of the internal thread adjusting cylinder 9 are respectively in contact with the side of the sliding double sleeves 82 that are close to each other. When the internal thread adjusting cylinder 9 rotates, it can resist the sliding double sleeves 82 to move, thereby driving the blocking rod 3 to move.

[0026] Specifically, the sliding single sleeve 81 is fitted onto the outer wall of the slide rod 6 and slidably connected to it, making the movement of the blocking rod 3 more horizontal.

[0027] Specifically, a tube frame 21 is fixedly mounted on the outer wall of the end of the air tube 2 away from the rotating mechanism 4. The end of the tube frame 21 away from the air tube 2 is installed on the detection pool 1 to fix the air tube 2 and keep it stable during operation.

[0028] Working principle: Align the two ends of the filter end cap with the annular blocking plates 44 of the rotating mechanisms 4 at both ends. After rotation, the internal thread adjusting cylinder 9 squeezes and slides the double sleeve 82, and pushes the fixed frame 7 towards the position of the air pipe 2, so that the blocking rod 3 and the rotating mechanism 4 at that position move together until the sealing rings 45 of the two rotating mechanisms 4 fit against the end cap end face, ensuring tight contact. The port of the air pipe 2 is connected to the air pipe, and air is injected into the air pipe 2 through the pump body and the air pipe. The gas enters the filter through the air pipe 2. The two turntables 41 are rotated every few seconds using an interval method. Since the turntables 41, the air pipe 2, and the blocking rod 3 are rotatably connected by the sealed bearings 42, the rotation of the rotating mechanism 4 will not affect the air pipe 2 and the blocking rod 3. The rotation of the turntables 41 drives the sleeve 43, the annular blocking plate 44, and the sealing ring 45 to rotate, thereby driving the filter to rotate. This allows for observation of different positions of the filter by rotation, avoiding the problem of blind spots.

[0029] The circuits, electronic components, and control modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the tightness of a fuel filter, comprising a detection tank (1), characterized in that: The detection pool (1) is fixed with a threaded rod (5) at one end of the top, and is fixed with a sliding rod (6) at the other end of the top, a threaded rod (5) is threadedly connected with an internal thread adjusting cylinder (9), one end of the bottom of the detection pool (1) is provided with a gas pipe (2), the other end of the bottom of the detection pool (1) is provided with a plug rod (3), the gas pipe (2) and the plug rod (3) are connected with a rotating mechanism (4), the rotating mechanism (4) comprises a turntable (41), the inside of the turntable (41) is provided with a sealed bearing (42), one side wall of the turntable (41) is fixed with a sleeve (43), the end of the sleeve (43) away from the turntable (41) is fixed with an annular plug plate (44), the outer wall of the plug rod (3) away from the rotating mechanism (4) is fixed with a fixed frame (7) at both ends, one end of the fixed frame (7) away from the plug rod (3) is fixed with two sliding double sleeves (82), the other end of the fixed frame (7) away from the plug rod (3) is fixed with a sliding single sleeve (81), the inner wall of the detection pool (1) at the end away from the gas pipe (2) of the plug rod (3) is fixed with a sliding pipe (31).

2. The fuel filter seal detection apparatus of claim 1, wherein: The gas pipe (2) and the plug rod (3) are respectively penetrated and bonded with the matched sealed bearings (42), and the gas pipe (2) and the plug rod (3) are respectively rotatably connected with the turntable (41) through the sealed bearings (42).

3. The fuel filter seal detection apparatus of claim 1, wherein: The annular plug plate (44) is bonded with a sealing ring (45) on the side away from the sleeve (43).

4. The fuel filter seal detection apparatus of claim 1, wherein: The end of the plug rod (3) away from the rotating mechanism (4) and the fixed frame (7) is inserted into the inside of the sliding pipe (31) and is slidably connected with the sliding pipe (31).

5. The fuel filter seal detection apparatus of claim 1, wherein: The sliding double sleeves (82) are sleeved on the outer wall of the threaded rod (5), and the internal thread adjusting cylinder (9) is located between the sliding double sleeves (82), and the two side walls of the internal thread adjusting cylinder (9) are respectively in contact with the side of the sliding double sleeves (82) close to each other.

6. The fuel filter seal detection apparatus of claim 1, wherein: The sliding single sleeve (81) is sleeved on the outer wall of the sliding rod (6) and is slidably connected with the sliding rod (6).

7. The fuel filter seal detection apparatus of claim 1, wherein: The outer wall of the end of the gas pipe (2) away from the rotating mechanism (4) is fixedly sleeved with a pipe frame (21), and the end of the pipe frame (21) away from the gas pipe (2) is mounted on the detection pool (1).

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