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CN-224231167-U - Sealing performance testing device for fuel pump of electronic fuel injection engine

CN224231167UCN 224231167 UCN224231167 UCN 224231167UCN-224231167-U

Abstract

The utility model relates to the technical field of tightness testing devices, in particular to a tightness testing device for a fuel pump of an electronic injection engine, which is characterized in that air is discharged into a condensing mechanism by starting an air supply mechanism, impurities and water vapor in the air are discharged through the condensing mechanism, the dried air is discharged into the air supply mechanism to be heated, the heated air is discharged into the fuel pump of the electronic injection engine to be detected, and the practicability of equipment is improved.

Inventors

  • LIU CHENGFENG

Assignees

  • 大连万方船舶技术有限公司

Dates

Publication Date
20260512
Application Date
20250515

Claims (7)

  1. 1. The tightness testing device for the fuel pump of the electronic fuel injection engine comprises a supporting mechanism (01) and is characterized by further comprising a moving mechanism (02), a fixing mechanism (03), an exhaust mechanism (04), a condensing mechanism (05) and a gas supply mechanism (06), wherein the moving mechanism (02) is installed in the supporting mechanism (01), the fixing mechanism (03) is installed on the moving mechanism (02), the exhaust mechanism (04) is installed on the supporting mechanism (01), the condensing mechanism (05) and the gas supply mechanism (06) are both installed on the supporting mechanism (01), the gas supply mechanism (06) is located on the left side of the condensing mechanism (05), and the gas supply mechanism (06) is connected with the supporting mechanism (01).
  2. 2. The fuel pump tightness testing device of an electronic fuel injection engine according to claim 1, wherein the supporting mechanism (01) comprises a supporting seat (11), a detecting cavity (12), a sealing door (13) and a sensor (14), the detecting cavity (12) is arranged at the top end of the supporting seat (11), the sealing door (13) is arranged on the left side wall of the detecting cavity (12), and the top end of the sensor (14) is arranged on the inner wall of the top end of the detecting cavity (12).
  3. 3. The fuel pump tightness testing device of an electronic fuel injection engine according to claim 2, wherein the moving mechanism (02) comprises two groups of sliding grooves (21), two groups of screw rods (22), two groups of sliding blocks (23), two groups of transmission shafts (24), a transmission belt (25) and a motor (26), the bottom ends of the two groups of sliding grooves (21) are respectively arranged at the bottom ends of the inner walls of the detection cavity (12), the two groups of sliding grooves (21) are respectively arranged in the two groups of sliding grooves (21), the inner parts of the two groups of sliding blocks (23) are respectively and slidably arranged on the two groups of screw rods (22), the outer parts of the two groups of sliding blocks (23) are respectively and slidably arranged on the inner walls of the two groups of sliding grooves (21), the inner rings of the two groups of transmission shafts (24) are respectively arranged at the right parts of the two groups of screw rods (22), the transmission belt (25) is sleeved on the two groups of transmission shafts (24), and the output end of the motor (26) is connected with the right end of one screw rod (22).
  4. 4. A fuel pump tightness testing device for an electronic fuel injection engine according to claim 3, characterized in that the fixing mechanism (03) comprises a supporting plate (31), two groups of electric cylinders (32) and two groups of fixing plates (33), wherein the bottom end of the supporting plate (31) is arranged on the two groups of sliding blocks (23), the top end of the supporting plate (31) is provided with a mounting plate, the fixing ends of the two groups of electric cylinders (32) are respectively arranged on a baffle plate at the top end of the supporting plate (31), and the two groups of fixing plates (33) are respectively arranged on the moving ends of the two groups of electric cylinders (32).
  5. 5. The fuel pump tightness test device for an electronic fuel injection engine according to claim 2, wherein the exhaust mechanism (04) comprises an exhaust pipe (41), a valve (42) and a vacuum pump (43), the input end of the exhaust pipe (41) is connected with the top end of the detection cavity (12), the valve (42) is arranged on the exhaust pipe (41), and the output end of the exhaust pipe (41) is connected with the input end of the vacuum pump (43).
  6. 6. The fuel pump tightness testing device for an electronic fuel injection engine according to claim 1, wherein the condensing mechanism (05) comprises a drying pipe (51), a heat exchanger (52), a circulating pump (53), a refrigerating box (54), a filter plate (55), a baffle plate (56), a liquid discharge pipe (57) and a collecting barrel (58), the heat exchanger (52) is arranged on the outer wall of the drying pipe (51), the output end of the heat exchanger (52) is connected with the input end of the circulating pump (53), the output end of the circulating pump (53) is connected with the input end of the refrigerating box (54), the output end of the refrigerating box (54) is connected with the input end of the heat exchanger (52), the filter plate (55) and the baffle plate (56) are arranged on the inner wall of the drying pipe (51), the filter plate (55) is arranged on the right side of the baffle plate (56), the input end of the liquid discharge pipe (57) is arranged on the outer wall of the drying pipe (51), the liquid discharge pipe (57) is arranged below the baffle plate (56), and the output end of the liquid discharge pipe (57) is connected with the input end of the collecting barrel (58).
  7. 7. The fuel pump tightness test device for an electronic fuel injection engine according to claim 6, wherein the air supply mechanism (06) comprises a first pipeline (61), a heating box (62), an air pump (63), a second pipeline (64), a joint (65) and a bracket (66), the input end of the first pipeline (61) is connected with the output end of the drying pipe (51), the output end of the first pipeline (61) is connected with the input end of the heating box (62), the output end of the heating box (62) is connected with the input end of the air pump (63), the output end of the air pump (63) is connected with the input end of the second pipeline (64), the output end of the second pipeline (64) is connected with the input end of the joint (65), the output end of the joint (65) is connected with the input end of the electronic fuel injection engine, the joint (65) is positioned in the detection cavity (12), and the bottom ends of the heating box (62) and the air pump (63) are all installed at the top end of the bracket (66).

Description

Sealing performance testing device for fuel pump of electronic fuel injection engine Technical Field The utility model relates to the technical field of tightness testing devices, in particular to a tightness testing device for a fuel pump of an electronic fuel injection engine. Background The fuel pump is a power source for gasoline from a fuel tank to a combustion chamber of an engine, is usually arranged in the fuel tank and is integrated with a fuel level sensor and a pressure regulator, the operating principle of the fuel pump is that a rotor in a pump shell is driven to rotate at high speed after a direct current motor is electrified, a tangent plane at the lower end of a rotor shaft is combined with an inner hole tangent plane of an impeller, the impeller is driven to rotate together in the same direction by the rotor shaft when the rotor rotates, vacuum low pressure is caused at an oil inlet part in the high-speed rotation process of the impeller, and then fuel after filtration treatment is sucked from an oil inlet of a pump cover, and the sucked fuel enters the pump shell to be extruded through an oil outlet after being pressurized by the impeller of the fuel pump, so that fuel with certain pressure is provided for a fuel system. In the prior art represented by the tightness testing device disclosed in the patent application number CN202323618005.4, the main structure of the tightness testing device comprises a detection cavity, a sealing door, a vacuum interface, a handle, a limiting chute, a rubber pad, a detection sealing plate and the like, and tightness testing is realized through the cooperation of the structures of the detection cavity, the sealing door, the vacuum interface, the handle, the limiting chute, the rubber pad, the detection sealing plate and the like. The temperature of the fuel pump of the electronic injection engine is higher when the fuel pump is used, the traditional air tightness testing device influences the testing result when testing the fuel pump of the electronic injection engine, and the traditional air tightness testing device discharges air into the fuel pump of the electronic injection engine, so that more water vapor components are contained in the air in a humid environment, and the subsequent use of the fuel pump of the electronic injection engine is influenced. Disclosure of utility model In order to solve the technical problems, the utility model provides the fuel pump tightness testing device of the electronic injection engine, which is used for exhausting air into the condensing mechanism by starting the air supply mechanism, exhausting impurities and water vapor in the air by the condensing mechanism, exhausting the dried air into the air supply mechanism for heating, exhausting the heated air into the fuel pump of the electronic injection engine for detection, and improving the practicability of equipment. The utility model discloses a tightness testing device for a fuel pump of an electronic injection engine, which comprises a supporting mechanism, and further comprises a moving mechanism, a fixing mechanism, an exhaust mechanism, a condensing mechanism and an air supply mechanism, wherein the moving mechanism is arranged in the supporting mechanism, the fixing mechanism is arranged on the moving mechanism, the exhaust mechanism is arranged on the supporting mechanism, the condensing mechanism and the air supply mechanism are arranged on the supporting mechanism, the air supply mechanism is positioned on the left side of the condensing mechanism, the air supply mechanism is connected with the supporting mechanism, the fixing mechanism is moved by starting the moving mechanism through opening the supporting mechanism, the fixing mechanism is moved out of the supporting mechanism, a worker places the fuel pump of the electronic injection engine on the fixing mechanism, the fixing mechanism is used for fixing the fuel pump of the electronic injection engine, the worker is used for connecting the air supply mechanism with the input end of the electronic injection engine, the output end of the electronic injection engine is sealed, the supporting mechanism is in a sealed state, the air in the supporting mechanism is discharged through starting the exhaust mechanism, the air supply mechanism is discharged into the condensing mechanism, impurities in the air and water are discharged through starting the air supply mechanism, the air pump is heated, and the dried air is discharged into a practical device after the fuel pump is heated, and the air pump is heated, and the tightness is improved. Preferably, the supporting mechanism comprises a supporting seat, a detecting cavity, a sealing door and a sensor, wherein the detecting cavity is arranged at the top end of the supporting seat, the sealing door is arranged on the left side wall of the detecting cavity, the top end of the sensor is arranged on the inner wall of the top end of the detecting cavity, the suppor