Air tightness detection equipment based on engine oil mist separator

Abstract

The utility model discloses an engine oil mist separator-based air tightness detection device, which relates to the technical field of automobile engineering, and comprises a bearing plate and a detector installed at the top of the bearing plate, a positioning piece is installed on the surface of a bottom plate, the positioning piece is located at the bottom of the detector, and the positioning piece comprises a positioning block movably connected to the surface of the bottom plate. The two sets of positioning blocks are symmetrically arranged, springs are installed in the positioning blocks, one ends of the springs are fixedly connected with the positioning blocks, the other ends of the springs are fixedly connected with positioning rods, one ends of the positioning rods extend to the outer sides of the positioning blocks and are movably connected with the positioning blocks in a sleeving mode, and rubber balls are installed at the ends, away from the springs, of the positioning rods. The rubber balls are arranged at equal intervals. According to the air tightness detection equipment based on the engine oil mist separator provided by the utility model, the positioning piece is arranged, so that the problem that the equipment is damaged due to the fact that the equipment falls to the ground when being collided can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engineering, in particular to an air tightness detection device based on an engine oil mist separator. Background Art

[0002] When the engine is running at high speed, a large amount of oil mist will be generated. The oil mist separator uses the high exhaust temperature to condense the oil mist into liquid and separate it, thereby improving the efficiency and life of the engine. If the oil mist separator is not sealed enough, the oil mist cannot be processed in time and is deposited in the intake system to form carbon deposits, affecting the engine performance and life. Therefore, before the oil mist separator leaves the factory, it is necessary to use air tightness testing equipment to conduct strict air tightness testing on the oil mist separator to ensure the normal operation of the engine oil mist separator and the stability of engine performance.

[0003] Common oil mist separators include straight-cylindrical, built-in, and filter-type. At present, when a straight-cylindrical oil mist separator is connected to an air tightness test device, it is connected to the pneumatic system of the test device through the air inlet and outlet on the oil mist separator. However, in this process, the oil mist separator is directly placed on the surface of the air tightness test device. If the air tightness test device is subjected to a collision and vibrates, the oil mist separator will shake. In severe cases, the oil mist separator will fall to the ground, causing it to be damaged. Therefore, an air tightness test device based on an engine oil mist separator is urgently needed to solve the above problems. Utility Model Content

[0004] In view of the problem that when testing the sealing performance of the conventional oil mist separator, if the testing device is hit, the oil mist separator will be affected, and even the oil mist separator will fall and be damaged, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide an air tightness detection device based on the engine oil mist separator, which aims to solve the problem that when the oil mist separator is detecting the air tightness, if the detection device is hit, it will affect the oil mist separator and even cause the oil mist separator to fall and be damaged.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an air tightness detection device based on an engine oil mist separator, comprising a carrying plate, a detector installed on the top of the carrying plate, an air pump installed on the top of the detector, and a connecting pipe installed at the output end of the air pump. A bottom plate is installed on the surface of the carrying plate, and a positioning member is installed on the surface of the bottom plate. The positioning member is located at the bottom of the detector. The positioning member comprises a positioning block movably connected to the surface of the bottom plate. The positioning blocks are provided in two groups and are symmetrically arranged. A spring is installed inside the positioning block, one end of the spring is fixedly connected to the positioning block, and the other end of the spring is fixedly connected to a positioning rod, one end of the positioning rod extends to the outside of the positioning block and is movably sleeved therewith, and a rubber ball is installed at one end of the positioning rod and away from the end of the spring, and the rubber balls are arranged equidistantly.

[0007] As a preferred solution of the engine oil mist separator air tightness detection equipment described in the utility model, the surface of the positioning rod is movably sleeved with a sleeve, the sleeve is fixed inside the positioning block and close to one end of the spring, and a driving part is installed inside the base plate.

[0008] As a preferred solution of the engine oil mist separator air tightness detection equipment described in the utility model, the driving member includes a bidirectional screw and a sliding rod located inside the base plate, the sliding rod is fixedly connected to the base plate, one end of the bidirectional screw is rotatably connected to the base plate, and one end of the bidirectional screw extends to the outside of the base plate and is movably sleeved therewith.

[0009] As a preferred solution of the air tightness detection equipment based on the engine oil mist separator described in the utility model, wherein: the bottom of the positioning block is fixedly connected with a sliding cylinder, the sliding cylinder is provided with two groups, the sliding cylinder extends to the interior of the bottom plate and is connected to the sliding rod and the bidirectional screw, the sliding cylinder is movably sleeved with the sliding rod, and the sliding cylinder is threadedly connected with the bidirectional screw.

[0010] As a preferred solution of the air tightness detection equipment based on the engine oil mist separator described in the utility model, wherein: a positioning groove is opened on the surface of the base plate, the positioning groove is arranged in a circular shape, the positioning groove is located on the inner side of the bidirectional screw and the sliding rod, and a connecting piece is installed at one end of the connecting pipe and away from the end of the air pump.

[0011] As a preferred solution of the engine oil mist separator air tightness detection equipment described in the utility model, the connecting part includes a driving block located inside the connecting pipe, and the two ends of the driving block are respectively provided with a positive external thread and a negative external thread, the positive external thread is located at the top of the negative external thread, and the two are far away from each other.

[0012] As a preferred solution of the air tightness detection equipment based on the engine oil mist separator described in the utility model, wherein: a first sealing ring is installed on the inner side of the positive external thread and the negative external thread, a second sealing ring is installed on the inner side of the connecting pipe, the diameter of the second sealing ring is larger than that of the first sealing ring, and the internal diameters of the two are consistent.

[0013] Beneficial effects of the utility model:

[0014] 1. By providing a driving part and a positioning part, the problem of the equipment falling to the ground and being damaged due to a collision can be prevented. By positioning the oil mist separator, the hands of the staff can be freed to facilitate the connection between the oil mist separator and the connecting pipe. This method is not limited to circular oil mist separators, and can also be used to position oil mist separators of other shapes with similar specifications.

[0015] 2. By providing a connector, the oil mist separator can be quickly connected to the connecting pipe, avoiding damage to the connecting pipe caused by continuous rotation. The first sealing ring and the second sealing ring can increase its sealing performance, thereby facilitating the airtightness detection of the oil mist separator and further improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of the air tightness detection equipment based on the engine oil mist separator.

[0018] Figure 2 The utility model is a schematic diagram of the position relationship between the driving part and the positioning part of the engine oil mist separator air tightness detection device.

[0019] Figure 3 This is a diagram showing the structure of the positioning parts of the utility model based on the engine oil mist separator air tightness detection equipment.

[0020] Figure 4 This is a diagram showing the structure of the spring, sleeve, positioning rod and rubber ball of the utility model based on the air tightness detection equipment of the engine oil mist separator.

[0021] Figure 5 This is a cross-sectional view of the positioning block structure of the utility model based on the engine oil mist separator air tightness detection equipment.

[0022] Figure 6This is an exploded view of the connector structure of the utility model based on the engine oil mist separator air tightness detection equipment.

[0023] Description of reference numerals:

[0024] 1. Loading plate; 2. Detector; 3. Air pump; 31. Connecting pipe; 4. Bottom plate; 41. Positioning groove; 42. Driving member; 421. Bidirectional screw; 422. Sliding rod; 43. Positioning member; 431. Positioning block; 432. Spring; 433. Positioning rod; 434. Sleeve; 435. Rubber ball; 436. Sliding cylinder; 5. Connecting member; 51. Driving block; 52. Positive external thread; 53. Negative external thread; 54. First sealing ring; 55. Second sealing ring. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] Example 1

[0027] Reference Figure 1-5 , which is the first embodiment of the utility model, provides an air tightness detection device based on an engine oil mist separator, the air tightness detection device based on the engine oil mist separator comprises a bearing plate 1, a detector 2 installed on the top of the bearing plate 1, an air pump 3 installed on the top of the detector 2, and a connecting pipe 31 installed at the output end of the air pump 3, a bottom plate 4 is installed on the surface of the bearing plate 1, a positioning member 43 is installed on the surface of the bottom plate 4, the positioning member 43 is located at the bottom of the detector 2, a hydraulic cylinder is installed on the top of the bearing plate 1 and on one side of the detector 2, and a C-shaped plate is fixedly connected to the output end of the hydraulic cylinder for placing the connecting pipe 31 and the connecting member 5, and the height of the C-shaped plate can be appropriately adjusted according to the specifications of the oil mist separator to prevent the connecting pipe 31 from being entangled and other problems;

[0028] The positioning member 43 includes a positioning block 431 movably connected to the surface of the base plate 4. The positioning block 431 is provided with two groups and is symmetrically arranged. A spring 432 is installed inside the positioning block 431. One end of the spring 432 is fixedly connected to the positioning block 431. The other end of the spring 432 is fixedly connected to a positioning rod 433. One end of the positioning rod 433 extends to the outside of the positioning block 431 and is movably sleeved therewith. A rubber ball 435 is installed at one end of the positioning rod 433 and away from the end of the spring 432. The rubber balls 435 are arranged equidistantly. Under the action of the micro-touch structure of the rubber balls 435, the contact area between the rubber balls 435 and the surface of the oil mist separator is increased, and the friction force is increased, so that the position of the oil mist separator can be better guaranteed, and the oil mist separator can be prevented from sliding or shifting, thereby ensuring the correctness and reliability of the test data. The spring 432, the positioning rod 433, and the sleeve 434 are provided with multiple groups and are arranged equidistantly, so as to better position the oil mist separator.

[0029] The surface of the positioning rod 433 is movably sleeved with a sleeve 434, which is fixed inside the positioning block 431 and close to one end of the spring 432. A driving member 42 is installed inside the bottom plate 4. The sleeve 434 can ensure the stability of the positioning rod 433 when it moves. At the same time, since its diameter is consistent with the diameter of the spring 432, the spring 432 can be limited. A groove corresponding to the positioning rod 433 is opened inside the positioning block 431, and the diameter of the groove is consistent with the diameter of the spring 432, which can ensure that the spring 432 will not tilt during the deformation or recovery of the deformation, thereby avoiding the phenomenon that multiple groups of springs 432 are easily entangled during the extrusion process.

[0030] The driving member 42 includes a bidirectional screw 421 and a sliding rod 422 located inside the base plate 4. The sliding rod 422 is fixedly connected to the base plate 4. One end of the bidirectional screw 421 is rotatably connected to the base plate 4. One end of the bidirectional screw 421 extends to the outside of the base plate 4 and is movably connected to it, which can facilitate the driving of the bidirectional screw 421.

[0031] The bottom of the positioning block 431 is fixedly connected with a sliding cylinder 436, and the sliding cylinder 436 is provided with two groups. The sliding cylinder 436 extends to the interior of the bottom plate 4 and is connected to the sliding rod 422 and the bidirectional screw 421. The sliding cylinder 436 and the sliding rod 422 are movably sleeved, and the sliding cylinder 436 is threadedly connected to the bidirectional screw 421. A sliding groove is provided inside the bottom plate 4, and the bidirectional screw 421 and the sliding rod 422 are located inside the sliding groove, and the sliding groove extends to the top of the bottom plate 4. In addition, the sliding cylinder 436 is connected to the bidirectional screw 421 and the sliding rod 422 through the sliding groove, so as to facilitate the two groups of positioning blocks 431 to approach or move away from each other.

[0032] A positioning groove 41 is provided on the surface of the bottom plate 4. The positioning groove 41 is circular and located on the inner side of the bidirectional screw 421 and the sliding rod 422. A connecting piece 5 is installed at one end of the connecting pipe 31 and at the end away from the air pump 3. The positioning groove 41 has a large diameter, which can facilitate the placement of the oil mist separator, so as to facilitate the driving of the positioning piece 43 to position the oil mist separator.

[0033] During use, the oil mist separator is placed inside the positioning groove 41, and then the bidirectional screw 421 is rotated to drive the two sets of positioning blocks 431 to approach each other. During this process, the rubber ball 435 will preferentially contact the oil mist separator, and the bidirectional screw 421 is continuously rotated. After the rubber ball 435 contacts the oil mist diverter, it will transmit pressure to the positioning rod 433, and the positioning rod 433 will move along the inside of the sleeve 434 toward the spring 432, and squeeze the spring 432 to cause it to deform, until the oil mist separator is completely positioned to complete the operation, thereby preventing the equipment from falling to the ground and being damaged due to a collision. By positioning the oil mist separator, the hands of the staff can be freed to facilitate the connection between the oil mist separator and the connecting pipe 31, and this method is not limited to circular oil mist separators, and can also be used to position oil mist separators of other shapes with similar specifications.

[0034] Example 2

[0035] Reference Figure 1-6 , which is the second embodiment of the utility model, and this embodiment is different from the first embodiment in that:

[0036] The connecting member 5 includes a driving block 51 located inside the connecting tube 31. Both ends of the driving block 51 are provided with a positive external thread 52 and a negative external thread 53. The positive external thread 52 is located at the top of the negative external thread 53, and the two are far away from each other. The positive external thread 52 is connected to the connecting tube 31, and the negative external thread 53 is connected to the inlet and outlet of the oil mist separator. Through the setting of the positive external thread 52 and the negative external thread 53, the connecting tube 31 can be connected to the oil mist separator by rotating the driving block 51, thereby avoiding damage to the connecting tube 31 caused by directly rotating it, and this method is simple to operate.

[0037] A first sealing ring 54 is installed on the inner side of the positive external thread 52 and the negative external thread 53, and a second sealing ring 55 is installed on the inner side of the connecting pipe 31. The diameter of the second sealing ring 55 is larger than that of the first sealing ring 54, and the internal diameters of the two are consistent, which can increase the sealing performance after the oil mist separator is connected to the connecting pipe 31. The sealing ring can be installed on the inner side of the inlet and outlet of the oil mist separator to make it consistent with the internal diameter of the first sealing ring 54 to improve the sealing performance.

[0038] During use, the connecting pipe 31 is placed at the top of the inlet and outlet of the oil mist separator, and then the driving block 51 is placed between the two, and it is rotated so that the positive external thread 52 and the negative external thread 53 are connected to the connecting pipe 31 and the inlet and outlet threads of the oil mist separator in turn until they are locked. When they are locked, the first sealing ring 54 and the second sealing ring 55 fit tightly. Since the internal diameters of the two are the same, their sealing can be increased, thereby facilitating the airtightness detection of the oil mist separator, further improving the detection efficiency.

[0039] The remaining structures are the same as those of Example 1.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An air tightness detection device based on an engine oil mist separator, comprising a carrier plate (1), a detector (2) mounted on the top of the carrier plate (1), an air pump (3) mounted on the top of the detector (2), and a connecting pipe (31) mounted on the output end of the air pump (3), characterized in that: A bottom plate (4) is installed on the surface of the carrier plate (1), a positioning member (43) is installed on the surface of the bottom plate (4), and the positioning member (43) is located at the bottom of the detector (2); The positioning member (43) comprises a positioning block (431) movably connected to the surface of the bottom plate (4); the positioning block (431) is provided with two groups and is symmetrically arranged; a spring (432) is installed inside the positioning block (431); one end of the spring (432) is fixedly connected to the positioning block (431); the other end of the spring (432) is fixedly connected to a positioning rod (433); one end of the positioning rod (433) extends to the outside of the positioning block (431) and is movably sleeved therewith; a rubber ball (435) is installed at one end of the positioning rod (433) and away from the end of the spring (432); the rubber balls (435) are arranged equidistantly.

2. The air tightness detection device based on the engine oil mist separator according to claim 1 is characterized in that: A sleeve (434) is movably sleeved on the surface of the positioning rod (433), and the sleeve (434) is fixed inside the positioning block (431) and close to one end of the spring (432). A driving member (42) is installed inside the bottom plate (4).

3. The air tightness detection device based on the engine oil mist separator according to claim 2 is characterized in that: The driving member (42) comprises a bidirectional screw rod (421) and a sliding rod (422) located inside the base plate (4); the sliding rod (422) is fixedly connected to the base plate (4); one end of the bidirectional screw rod (421) is rotatably connected to the base plate (4); and one end of the bidirectional screw rod (421) extends to the outside of the base plate (4) and is movably sleeved thereon.

4. The air tightness detection device based on the engine oil mist separator according to claim 3 is characterized in that: The bottom of the positioning block (431) is fixedly connected with a sliding cylinder (436), and the sliding cylinder (436) is provided with two groups. The sliding cylinder (436) extends to the inside of the bottom plate (4) and is connected to the sliding rod (422) and the bidirectional screw (421). The sliding cylinder (436) is movably sleeved with the sliding rod (422), and the sliding cylinder (436) is threadedly connected with the bidirectional screw (421).

5. The air tightness detection device based on the engine oil mist separator according to claim 4 is characterized in that: A positioning groove (41) is provided on the surface of the bottom plate (4), and the positioning groove (41) is arranged in a circular shape. The positioning groove (41) is located on the inner side of the bidirectional screw rod (421) and the sliding rod (422). A connecting piece (5) is installed at one end of the connecting pipe (31) and at the end away from the air pump (3).

6. The air tightness detection device based on the engine oil mist separator according to claim 5 is characterized in that: The connecting member (5) comprises a driving block (51) located inside the connecting tube (31), and two ends of the driving block (51) are respectively provided with a positive external thread (52) and a negative external thread (53), and the positive external thread (52) is located at the top of the negative external thread (53), and the two are far away from each other.

7. The air tightness detection device based on the engine oil mist separator according to claim 6 is characterized in that: A first sealing ring (54) is installed on the inner side of the positive external thread (52) and the negative external thread (53), and a second sealing ring (55) is installed on the inner side of the connecting pipe (31). The diameter of the second sealing ring (55) is larger than that of the first sealing ring (54), and the inner diameters of the two are consistent.

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