CN203347963U - Split fuel pump - Google Patents

Abstract

The utility model belongs to the technical field of aviation fuel systems, and in particular relates to a split fuel pump, which includes a pump body and a pump core installed in the pump body, and a residual oil chamber for communication is formed between the pump body and the pump core. A ventilation assembly is arranged above the outside of the pump core, and an oil discharge assembly is arranged below. The utility model has a simple structure, and only needs to add a ventilation assembly and an oil discharge assembly to the common split fuel pump. The oil pump has the advantages of simple structure, convenient use and good oil discharge effect. When replacing the pump core, the remaining oil in the pump core can be removed to avoid fuel pollution to surrounding components and the environment. Reduced maintenance workload and maintenance time.

Description

A split type fuel pump

technical field

The utility model belongs to the technical field of aviation fuel systems, in particular to a split fuel pump. the

Background technique

During the process of removing the pump core of an ordinary split fuel pump, when the pump core is taken out, the residual fuel in the pump core and the pump body will flow out. However, the outflowing fuel oil is difficult to collect, and it is easy to pollute the surrounding components and the environment. After the pump core is taken out, the contaminated components need to be cleaned, which increases the maintenance work and maintenance time. the

Contents of the invention

The purpose of this utility model is: to propose a split type oil supply pump with oil discharge capability, so that when the pump core is replaced, the remaining oil in the pump core can be removed for use, and the surrounding parts and environment can be avoided from being polluted by fuel oil. the

The technical solution of the present invention is: a split type fuel pump, including a pump body 1 and a pump core 2 installed in the pump body 1, a residual oil chamber 3 for communication between the pump body 1 and the pump core 2, and the pump core 2 Including the motor 4 and the impeller 5, the pump body 1 is provided with a self-sealing valve 6, an outer sealing ring 7 and several inner sealing rings 8 are arranged between the pump body 1 and the pump core 2, and a The vent assembly 9 is provided with an oil discharge assembly 10 below, and the vent assembly 9 and the oil discharge assembly 10 communicate with the remaining oil chamber 3 . the

The ventilation assembly 9 includes a ventilation nozzle 11, a ventilation plug cap 12 and a ventilation channel 13, and a ventilation gasket 14 is arranged between the ventilation nozzle 11 and the ventilation channel 13, and the oil discharge assembly 10 includes an oil discharge nozzle 15 , The oil discharge plug cap 16 and the oil discharge channel 17, an oil discharge gasket 18 is arranged between the oil discharge joint 15 and the oil discharge channel 17. the

The utility model has the advantages that: the utility model has a simple structure, and only needs to add a ventilation assembly and an oil discharge assembly to the common split fuel pump. The oil pump has the advantages of simple structure, convenient use and good oil discharge effect. When replacing the pump core, the residual oil in the pump core can be removed to prevent the fuel from polluting the surrounding components and the environment. Reduced maintenance workload and maintenance time. the

Description of drawings

Fig. 1 is the structural representation (installation state) of the utility model;

Fig. 2 is a schematic structural diagram of the utility model (oil discharge state);

Figure 3 is a partial enlarged view of the connection of the ventilation nozzle;

Figure 4 is a partially enlarged view of the joint of the oil discharge nozzle. the

Among them, 1-pump body, 2-pump core, 3-excess oil chamber, 4-motor, 5-impeller, 6-self-sealing valve, 7-outer sealing ring, 8-inner sealing ring, 9-breather assembly, 10 - Oil drain assembly, 11- Vent nozzle, 12- Vent cap, 13- Vent channel, 14- Vent gasket, 15- Oil drain joint, 16- Oil drain cap, 17- Oil drain channel, 18- Oil discharge gasket, 19-exhaust impeller, 1a-exhaust port, 1b-pump outlet, 1c-pump inlet, 1d-exhaust one-way valve, 1e-pump outlet one-way valve. the

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings, please refer to Fig. 1 to Fig. 4 . the

As shown in Figures 1 and 2, a split fuel pump includes a pump body 1 and a pump core 2 installed in the pump body 1, and a residual oil chamber 3 communicating with the pump body 1 and the pump core 2 is formed. The core 2 includes a motor 4 and an impeller 5. The pump body 1 is provided with a self-sealing valve 6. An outer sealing ring 7 and several inner sealing rings 8 are arranged between the pump body 1 and the pump core 2, above the outer side of the pump core 2. A ventilation assembly 9 is provided, and an oil discharge assembly 10 is provided below, and the ventilation assembly 9 and the oil discharge assembly 10 communicate with the residual oil chamber 3 . the

As shown in Fig. 1 and Fig. 3 and Fig. 4, the ventilation assembly 9 includes a ventilation nozzle 11, a ventilation cap 12 and a ventilation channel 13, and a ventilation gasket 14 is arranged between the ventilation nozzle 11 and the ventilation channel 13, so that The oil discharge assembly 10 includes an oil discharge connector 15 , an oil discharge cap 16 and an oil discharge channel 17 , and an oil discharge gasket 18 is arranged between the oil discharge connector 15 and the oil discharge channel 17 . the

As shown in Figure 1, in the installation state, the self-sealing valve 6 is in the open state, and when the motor 4 is powered on, it drives the exhaust impeller 19 and the impeller 5 to rotate, so that the fuel passes through the pump inlet 1c, and after being pressurized by the impeller 5, it passes through the pump outlet 1b transport out. If gas remains at the pump inlet 1c, the gas in the pump inlet 1c pushes the exhaust one-way valve 1d through the suction of the exhaust impeller 19 and is discharged through the exhaust port 1a. the

As shown in Figure 2, in the state of oil discharge, pull out the pump core 2 to the required position, at this time the self-sealing valve 6 on the pump body 1 is in a closed state, and the outer sealing ring 7 on the pump core 2 is in a sealed state in the pump body 1 At the same time, the exhaust one-way valve 1d in the exhaust port 1a is in the closed state, and the pump outlet one-way valve 1e in the pump outlet 1b is in the closed state; Connect the hose to the oil discharge nozzle 15 of the oil discharge assembly 10; connect the other end of the hose to the oil pumping device; operate the oil pumping device to drain the The remaining oil is drawn out. the

Claims (2)

1. a split type fuel pump, comprise the pump housing [1] and be installed on the pump core [2] in the pump housing [1], form the excess oil chamber [3] of linking up between the pump housing [1] and pump core [2], pump core [2] comprises motor [4] and impeller [5], be provided with self-styled valve [6] on the pump housing [1], be provided with exterior seal ring [7] and several inner seal rings [8] between the pump housing [1] and pump core [2], it is characterized in that, be provided with ventilation assembly [9] in the top in the outside of pump core [2], below is provided with oil extraction assembly [10], and described ventilation assembly [9] and oil extraction assembly [10] are linked up with excess oil chamber [3].

2. a kind of split type fuel pump according to claim 1, it is characterized in that, described ventilation assembly [9] comprises that ventilation connects mouth [11], ventilation blocking cap [12] and venting channels [13], connect between mouth [11] and venting channels [13] and be provided with ventilation sealing gasket [14] in ventilation, described oil extraction assembly [10] comprises that oil extraction connects mouth [15], oil extraction blocking cap [16] and oil drain passage [17], connects between mouth [15] and oil drain passage [17] and is provided with oil extraction sealing gasket [18] in oil extraction.

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