Testing device for oil outlet valve matching part sealing performance detection

Abstract

The utility model relates to the technical field of delivery valve matching part detection, and discloses a test device for delivery valve matching part sealing detection, which comprises a detection table and a connecting plate, the top end of the detection table and the bottom end of the connecting plate are fixedly provided with mounting assemblies, and the side wall of a rotating plate is rotatably connected with a clamping plate. Each clamping plate penetrates through the corresponding adjacent through hole and then abuts against the outer wall of the corresponding sealing ring, and each sliding sleeve is slidably connected with the outer wall of the corresponding adjacent rotating plate. The threaded rods on the two bases are rotated to enable the sliding blocks to move in the direction away from the assembling blocks, so that the mounting cylinder is driven to rotate, in the rotating process of the mounting cylinder, the sliding sleeves are matched with the rotating plates, the rotating plates drive the clamping plates to get close to the interiors of the through holes, and therefore the sealing rings are pressed, and the sealing effect is improved. The sealing ring and the side wall of the delivery valve matching part are more tightly attached, the sealing ring and the sealing groove are in a complete sealing state, the sealing performance of the detection position is enhanced, and the accuracy of the detection result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil outlet valve pair detection, in particular to a test device for detecting the sealing performance of an oil outlet valve pair. Background Art

[0002] The oil delivery valve assembly is an important component in the diesel engine fuel injection system. Its function is to deliver the high-pressure diesel provided by the plunger assembly to the injector assembly. When the plunger assembly stops supplying, the high-pressure oil pipe is isolated from the cavity at the upper end of the plunger to prevent the oil in the high-pressure oil pipe from flowing back into the plunger assembly, thereby ensuring the normal operation of the diesel engine. Therefore, it is very necessary to test the sealing performance of the oil delivery valve assembly.

[0003] For example, a test device for detecting the sealing performance of an oil outlet valve pair with announcement number CN201749012U, ..., a first sealing ring is arranged between the pressure head and the sliding plate, a gas collecting cavity is arranged at the side end of the pressure head, the gas collecting cavity is connected to the gas collecting pipe and the second through hole, the gas collecting pipe is connected to the gas leakage detection device, a second sealing ring is arranged on the lower surface of the pressure head, a groove is arranged at the upper part of the base, a lower gasket is arranged at the lower part of the groove, one end of the ventilation pipe is connected to the third through hole, and the other end is connected to the ventilation equipment. The device can detect the sealing performance between the oil outlet valve body and the oil outlet valve seat.

[0004] In the above patent, the two ends of the oil outlet valve pair are placed in the corresponding grooves respectively, and then after pressurization, it is observed whether bubbles are generated in the water container, so as to accurately judge whether the oil outlet valve pair meets the technical requirements. However, only a sealing ring is simply set in the groove to seal the two ends of the oil outlet valve pair, and the sealing effect is not good. During the pressurized detection process, the poor sealing effect at the detection point will affect the detection result.

[0005] Therefore, we proposed a test device for detecting the sealing performance of oil outlet valve components in order to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to provide a test device for detecting the sealing performance of an oil outlet valve pair, so as to solve the problem proposed in the above-mentioned background technology that the sealing effect is not good and the detection result is affected by simply setting a sealing ring inside a groove to seal the two ends of the oil outlet valve pair.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a test device for detecting the sealing performance of an oil outlet valve pair, comprising a test platform and a connecting plate, wherein the top of the test platform and the bottom of the connecting plate are fixedly mounted with mounting components, each of the mounting components comprises a base, the inner wall of each base is embedded with a mounting cylinder rotatably connected, the side wall of the mounting cylinder is provided with three through holes at equal angles, the inner wall of the mounting cylinder is provided with an annular groove, the inner wall of the annular groove is sealingly and slidably connected with a sealing ring, the inner bottom wall of the mounting cylinder is provided with a sealing groove, and the top of the base is rotatably connected with an assembly Block, the side wall of the assembly block is threadedly connected with a threaded rod, the side wall of the threaded rod is threadedly connected with a slider, the slider is fixedly connected to the side wall of the mounting tube, the side wall of the mounting tube is fixedly connected with three fixed blocks at equal angles, each side wall of the fixed block is rotatably connected with a sliding sleeve, the top of the base is rotatably connected with three rotating shafts at equal angles, each side wall of the rotating shaft is fixedly connected with a rotating plate, the side wall of the rotating plate is rotatably connected with a clamping plate, each clamping plate penetrates through adjacent through holes and then contacts with the outer wall of the sealing ring, and each sliding sleeve is slidably connected to the outer wall of the adjacent rotating plate.

[0008] Preferably, the bottom end of the connecting plate and the top end of the detection table are fixedly connected with a plurality of connecting rods, each of the connecting rods is fixedly connected to an adjacent base, the mounting cylinder is a cylinder with one end closed, a plurality of the through holes and the annular groove are at the same horizontal position, a gasket is fixedly connected to the bottom wall of the mounting cylinder, and each of the clamping plates is an arc-shaped structure and is slidably connected to the inner wall of the through hole.

[0009] Preferably, a plurality of support rods are symmetrically fixedly connected to the top of the detection platform, the plurality of support rods are commonly fixedly connected to a top plate, and a hydraulic push rod is fixedly connected to the top of the top plate.

[0010] Preferably, the movable end of the hydraulic push rod passes through the top plate and is fixedly connected to a connecting plate, and each of the support rods passes through and is slidably connected to a side wall of the connecting plate.

[0011] Preferably, an air storage box and a liquid storage box are symmetrically fixedly connected to the top of the base, and each side wall of the air storage box is fixedly connected to an air outlet pipe, one end of the air outlet pipe passes through the corresponding base and the installation tube in sequence and then extends to the inside of the sealing groove.

[0012] Preferably, the air outlet pipe is rotatably connected to the bottom wall of the mounting tube, the side wall of the air storage box is fixedly connected with a connecting pipe, the connecting pipe is fixedly connected to the liquid storage box, and both the air outlet pipe and the connecting pipe are installed with a one-way valve.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By rotating the threaded rods on the two bases, the slider moves in the direction away from the assembly block, thereby driving the installation cylinder to rotate. During the rotation of the installation cylinder, the cooperation between the sliding sleeve and the rotating plate allows the rotating plate to drive the clamping plate to approach the inside of the through hole, thereby pressing the sealing ring, making the sealing ring and the side wall of the oil outlet valve pair more closely fit, and making the sealing ring and the sealing groove in a completely sealed state, solving the problem that the sealing effect is not good and the test results are affected by simply setting a sealing ring inside the groove to seal the two ends of the oil outlet valve pair. The sealing effect is enhanced and the accuracy of the test results is improved.

[0015] 2. During the pressurization process, if the sealing performance of the oil outlet valve pair is unqualified, the pressure in the sealing groove will increase, causing the gas in the sealing groove to enter the gas storage box along the corresponding gas outlet pipe. The internal pressure of the gas storage box is constant, so that after the excess gas enters the gas storage box, the alkaline gas inside the gas storage box will enter the liquid storage box through the connecting pipe. The alkaline gas will directly turn red when it encounters phenolphthalein. According to the reddening range of the phenolphthalein solution, it can be accurately judged whether the oil outlet valve pair meets the technical requirements. The operation is simple and convenient, and the sealing performance of the oil outlet valve pair can be effectively and quickly tested, thereby improving the practicality of the device. After the test is completed, hydrochloric acid can be added to the liquid storage box to make the phenolphthalein colorless, so as to facilitate repeated use of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the installation component in the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the installation tube in the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the installation assembly in the utility model in a top view direction;

[0020] Figure 5 It is a three-dimensional appearance schematic diagram of the utility model.

[0021] In the figure: 1. test table; 2. support rod; 3. top plate; 4. hydraulic push rod; 5. connecting plate; 6. installation assembly; 61. base; 62. connecting rod; 63. installation cylinder; 64. through hole; 65. annular groove; 66. gasket; 67. sealing groove; 68. assembly block; 69. threaded rod; 610. slider; 611. fixed block; 612. sliding sleeve; 613. rotating shaft; 614. rotating plate; 615. clamping plate; 616. sealing ring; 7. air storage box; 8. liquid storage box; 9. air outlet pipe; 10. connecting pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1: Please refer to Figure 1-3 A test device for detecting the sealing performance of an oil outlet valve pair comprises a test platform 1 and a connecting plate 5. The top of the test platform 1 and the bottom of the connecting plate 5 are fixedly mounted with mounting components 6. Each mounting component 6 comprises a base 61. The inner wall of each base 61 is embedded with a mounting cylinder 63 which is rotatably connected. The side wall of the mounting cylinder 63 is provided with three through holes 64 at equal angles. The inner side wall of the mounting cylinder 63 is provided with an annular groove 65. The inner wall of the annular groove 65 is sealed and slidably connected with a sealing ring 616. The inner bottom wall of the mounting cylinder 63 is provided with a sealing groove 67. The top of the base 61 is rotatably connected with an assembly block 68. The side wall of the assembly block 68 is threadedly connected with a threaded rod 6 9. The side wall of the threaded rod 69 is threadedly connected with a slider 610, and the slider 610 is fixedly connected to the side wall of the mounting tube 63. The side wall of the mounting tube 63 is fixedly connected with three fixed blocks 611 at equal angles. The side wall of each fixed block 611 is rotatably connected with a sliding sleeve 612. The top of the base 61 is rotatably connected with three rotating shafts 613 at equal angles. The side wall of each rotating shaft 613 is fixedly connected with a rotating plate 614. The side wall of the rotating plate 614 is rotatably connected with a clamping plate 615. Each clamping plate 615 penetrates the adjacent through hole 64 and then contacts with the outer wall of the sealing ring 616. Each sliding sleeve 612 is slidably connected to the outer wall of the adjacent rotating plate 614.

[0024] A plurality of connecting rods 62 are fixedly connected to the bottom end of the connecting plate 5 and the top end of the testing platform 1, and each connecting rod 62 is fixedly connected to the adjacent base 61. The mounting cylinder 63 is a cylinder with one end closed, and a plurality of through holes 64 and the annular groove 65 are at the same horizontal position. A gasket 66 is fixedly connected to the inner bottom wall of the mounting cylinder 63. Each clamping plate 615 is an arc-shaped structure and is slidably connected to the inner wall of the through hole 64. The contact surface between the arc-shaped clamping plate 615 and the sealing ring 616 is larger, thereby improving the clamping effect of the sealing ring 616 to improve the sealing performance.

[0025] A plurality of support rods 2 are symmetrically fixedly connected to the top of the testing platform 1, and the plurality of support rods 2 are commonly fixedly connected to a top plate 3, and a hydraulic push rod 4 is fixedly connected to the top of the top plate 3; the movable end of the hydraulic push rod 4 passes through the top plate 3 and is fixedly connected to a connecting plate 5, and each support rod 2 is slidably connected to the side wall of the connecting plate 5, and the connecting plate 5 and the mounting assembly 6 above are driven to move up and down by the hydraulic push rod 4.

[0026] In this embodiment, when in use, first place one end of the oil outlet valve pair in the lower mounting tube 63, then start the hydraulic push rod 4, so that the connecting plate 5 drives the upper mounting tube 63 to descend, until the upper end of the oil outlet valve pair contacts the gasket 66 inside the upper mounting tube 63, close the hydraulic push rod 4, and then rotate the threaded rods 69 on the two bases 61 to move the slider 610 in a direction away from the assembly block 68, thereby driving the mounting tube 63 to rotate, wherein the assembly block 68 is connected to the top of the base 61 by rotation. During the rotation of the installation cylinder 63, the sliding sleeve 612 slides along the rotating plate 614. Through the cooperation between the sliding sleeve 612 and the rotating plate 614, the rotating plate 614 drives the clamping plate 615 to approach the inside of the through hole 64, thereby pressing the sealing ring 616, making the sealing ring 616 and the side wall of the oil outlet valve pair more closely fit, and making the sealing ring 616 and the sealing groove 67 in a completely sealed state, thereby improving the sealing effect of the detection end of the oil outlet valve pair to ensure the accuracy of the detection result.

[0027] Embodiment 2: This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 4 The top of the base 61 is symmetrically fixedly connected with an air storage box 7 and a liquid storage box 8. The side wall of each air storage box 7 is fixedly connected with an air outlet pipe 9. One end of the air outlet pipe 9 passes through the corresponding base 61 and the installation tube 63 in sequence and then extends to the inside of the sealing groove 67; the air storage box 7 contains alkaline gas, and the liquid storage box 8 contains phenolphthalein solution.

[0028] The air outlet pipe 9 is rotatably connected to the bottom wall of the mounting tube 63, and a connecting pipe 10 is fixedly connected to the side wall of the air storage box 7. The connecting pipe 10 is fixedly connected to the liquid storage box 8. Check valves are installed inside the air outlet pipe 9 and the connecting pipe 10. The setting of the check valve allows the gas to only enter the air storage box 7 along the air outlet pipe 9 through the sealing groove 67, and then enter the liquid storage box 8 through the connecting pipe 10.

[0029] In this embodiment: after the sealing operation is completed at the detection positions at both ends of the oil outlet valve pair, the hydraulic push rod 4 is started again to drive the connecting plate 5 to move downward, the oil outlet valve pair is pressurized, and then the oil outlet valve pair is inspected by observing whether the phenolphthalein solution inside the two liquid storage boxes 8 turns red; during the pressurization process, if the sealing performance of the oil outlet valve pair is unqualified, the pressure in the sealing groove 67 will increase, so that the gas in the sealing groove 67 enters the gas storage box 7 along the corresponding gas outlet pipe 9, and the internal pressure of the gas storage box 7 is constant, so that the excess gas enters the gas storage box 7. After that, the alkaline gas inside the gas storage box 7 will enter the liquid storage box 8 through the connecting pipe 10. The alkaline gas will directly turn red when encountering phenolphthalein. According to the red range of the phenolphthalein solution, it can be accurately judged whether the oil outlet valve pair meets the technical requirements; on the contrary, if the phenolphthalein solution changes color, it means that the sealing performance of the oil outlet valve pair is qualified; the operation is simple and convenient, and the sealing performance of the oil outlet valve pair can be effectively and quickly tested, thereby improving the practicality of the device; after the test is completed, hydrochloric acid can be added to the liquid storage box 8 to make the phenolphthalein colorless, so as to facilitate repeated use of the test.

[0030] Working principle: First, place one end of the oil outlet valve pair in the lower mounting cylinder 63, start the hydraulic push rod 4, and make the connecting plate 5 drive the upper mounting cylinder 63 to descend until the upper end of the oil outlet valve pair contacts the gasket 66 inside the upper mounting cylinder 63, close the hydraulic push rod 4, and then rotate the threaded rod 69 on the two bases 61 to move the slider 610 in the direction away from the assembly block 68, thereby driving the mounting cylinder 63 to rotate. During the rotation of the mounting cylinder 63, the rotating plate 614 drives the clamping plate 615 to approach the inside of the through hole 64 through the cooperation of the sliding sleeve 612 and the rotating plate 614, thereby pressing the sealing ring 616, so that the sealing ring 616 and the oil outlet are in contact. The side walls of the valve pair are more closely fitted, so that the sealing ring 616 and the sealing groove 67 are in a completely sealed state; then the hydraulic push rod 4 is started to pressurize the oil outlet valve pair; during the pressurization process, if the sealing performance of the oil outlet valve pair is unqualified, the pressure in the sealing groove 67 will increase, so that the gas in the sealing groove 67 enters the air storage box 7 along the corresponding air outlet pipe 9, and the pressure inside the air storage box 7 is constant, so that after the excess gas enters the air storage box 7, the alkaline gas inside the air storage box 7 will enter the liquid storage box 8 through the connecting pipe 10, and the alkaline gas will directly turn red when it encounters phenolphthalein. According to the reddening range of the phenolphthalein solution, it can be accurately judged whether the oil outlet valve pair meets the technical requirements.

[0031] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A test device for detecting the sealing performance of an oil outlet valve assembly, comprising a test bench (1) and a connecting plate (5), characterized in that: The top of the detection platform (1) and the bottom of the connecting plate (5) are both fixedly mounted with mounting components (6), each of the mounting components (6) comprising a base (61), the inner wall of each base (61) being embedded with a mounting tube (63) rotatably connected thereto, the side wall of the mounting tube (63) being provided with three through holes (64) at equal angles, the inner side wall of the mounting tube (63) being provided with an annular groove (65), the inner wall of the annular groove (65) being sealingly and slidably connected with a sealing ring (616), the inner bottom wall of the mounting tube (63) being provided with a sealing groove (67), the top of the base (61) being rotatably connected with an assembly block (68), the side wall of the assembly block (68) being threadedly connected with a threaded rod (69), the side wall of the threaded rod (69) being threaded A slider (610) is connected, the slider (610) is fixedly connected to the side wall of the installation cylinder (63), the side wall of the installation cylinder (63) is fixedly connected with three fixed blocks (611) at equal angles, the side wall of each fixed block (611) is rotatably connected with a sliding sleeve (612), the top of the base (61) is rotatably connected with three rotating shafts (613), the side wall of each rotating shaft (613) is fixedly connected with a rotating plate (614), the side wall of the rotating plate (614) is rotatably connected with a clamping plate (615), each clamping plate (615) penetrates the adjacent through hole (64) and contacts with the outer wall of the sealing ring (616), and each sliding sleeve (612) is slidably connected to the outer wall of the adjacent rotating plate (614).

2. A test device for detecting the sealing performance of an oil outlet valve pair according to claim 1, characterized in that: The bottom end of the connecting plate (5) and the top end of the detection platform (1) are fixedly connected with a plurality of connecting rods (62), each of the connecting rods (62) is fixedly connected to an adjacent base (61), the mounting tube (63) is a cylinder with one end closed, the plurality of through holes (64) and the annular groove (65) are at the same horizontal position, a gasket (66) is fixedly connected to the inner bottom wall of the mounting tube (63), and each of the clamping plates (615) is an arc-shaped structure and is slidably connected to the inner wall of the through hole (64).

3. A test device for detecting the sealing performance of an oil outlet valve pair according to claim 1, characterized in that: The top of the detection platform (1) is symmetrically and fixedly connected to a plurality of support rods (2), the plurality of support rods (2) are commonly and fixedly connected to a top plate (3), and the top of the top plate (3) is fixedly connected to a hydraulic push rod (4).

4. A test device for detecting the sealing performance of an oil outlet valve pair according to claim 3, characterized in that: The movable end of the hydraulic push rod (4) passes through the top plate (3) and is fixedly connected to a connecting plate (5), and each of the support rods (2) passes through and is slidably connected to a side wall of the connecting plate (5).

5. The test device for detecting the sealing performance of the oil outlet valve assembly according to claim 1, characterized in that: The top of the base (61) is symmetrically fixedly connected to an air storage box (7) and a liquid storage box (8), and the side wall of each air storage box (7) is fixedly connected to an air outlet pipe (9), one end of the air outlet pipe (9) sequentially passes through the corresponding base (61) and the installation tube (63) and then extends to the inside of the sealing groove (67).

6. A test device for detecting the sealing performance of an oil outlet valve pair according to claim 5, characterized in that: The air outlet pipe (9) is rotatably connected to the bottom wall of the mounting tube (63); a connecting pipe (10) is fixedly connected to the side wall of the air storage box (7); the connecting pipe (10) is fixedly connected to the liquid storage box (8); and one-way valves are installed inside the air outlet pipe (9) and the connecting pipe (10).

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