Oil drain and suction pump

• US 20100254838A1
• Filed: 09/28/2007
• Published: 10/07/2010
• Est. Priority Date: 09/28/2007
• Status: Active Grant

• Current Assignee: Chuan Jiing Enterprise Co., Ltd
• Original Assignee: Chuan Jiing Enterprise Co., Ltd
• Inventors: Tseng, Tien-Tsai
• Granted Patent: US 8,240,433 B2
• Time in Patent Office: Days
• US Class Current: 417/437
• CPC Class Codes: F04B 23/021 the pump being immersed in the reservoir
• CPC Class Codes: F04B 23/025 the pump being located directly adjacent the reservoir
• CPC Class Codes: F04B 9/14 Pumps characterised by muscle-power operation hand-held spraying or dispensing apparatus using pumps or bulbs B05B11/00

Abstract

A pump providing oil suction and oil drain functions includes a barrel and a lid; a first passage is disposed on a bottom of the barrel; the lid contains a second passage, a third passage, and a fourth passage; a regulating member is disposed on the lid to connect the third passage through the second passage and to allow air to flow in sequence from an oil storage space, the third passage, the second passage, a pipe, the first passage, a ventilation pipe, and the fourth passage into the ambient air for producing suction in oil suction operation; and to connect the fourth passage through the third passage for the ambient air to flow in sequence through the second passage, the pipe, the first passage, the ventilation pipe, the fourth passage, and the third passage to enter into the oil storage space for producing pressure during the oil drain operation.

Claims

1. An oil suction and oil drain pump comprising:

a barrel containing an oil storage space, a first passage being disposed on a bottom of the barrel, and the first passage being provided with a leading in hole and a leading out hole;

a lid closing upon a top of the barrel, a pipe being disposed in the oil storage space of the barrel, a lower end of the pipe being disposed on a bottom of the barrel and connecting through the leading in hole of the first passage, an upper end of the pipe being connected to the lid, a pull rod being disposed in the pipe, one end of the pull rod in the tube being connected to a compression portion to compress air flowing through the pipe, the pull rod penetrating through and extending out of the lid, the lid being provided with a second passage, the second passage containing a first air inlet and a first air outlet, the first air outlet connecting through the pipe via an opening on a top of the pipe, the lid containing a third passage, the third passage being provided with a first through hole and a second through hole, the second through hole connecting through the oil storage space, a fourth passage being disposed on the lid, the fourth passage being provided with a second air inlet and a second air outlet, the second air inlet connecting through the leading out hole of the first passage via a ventilation pipe disposed in the oil storage space to allow air to flow in sequence through the second passage, the pipe, the first passage, the ventilation pipe to the fourth passage; and

a regulating member disposed on the lid to allow in oil suction operation the third passage connecting through the second passage and the fourth passage connecting through the ambient air to allow air in the oil storage space to be drained from the second air outlet of the fourth passage for producing suction;

or to allow in oil drain operation the fourth passage connecting through the third passage and the first air inlet of the second passage connecting through ambient air for the air to enter through the second through hole of the third passage into the oil storage space for producing pressure to drain the oil.

2. The pump as claimed in claim 1, wherein the regulating member is disposed to the top of the lid to permit mobile regulation;

the regulating member is provided with an air duct;

in oil suction operation, the third passage is connected through the second passage through the air duct;

or in oil drain operation, the fourth passage is connected through the third passage through the air duct.

3. The pump as claimed in claim 2, wherein the second passage, the third passage, and the fourth passage are laterally disposed on the lid;

the first passage is laterally disposed on the bottom of the barrel;

the first air outlet of the second passage connects through the pipe via a first perforation disposed on the lid;

a second through hole of the third passage connects through the oil storage space via a second perforation disposed on the lid; and

the fourth passage connects through the ventilation pipe via a third perforation disposed on the lid.

4. The pump as claimed in claim 2, wherein a leak-proof structure is disposed at openings respectively of the first air inlet of the second passage, the first through hole of the third passage, and the second air outlet of the fourth passage;

the leak-proof structure being assembled with the regulating member to prevent airflow to escape from where between the leak-proof structure and the regulating member when the regulating member is executing alternative switch for regulating.

5. The pump as claimed in claim 2, wherein a one-way valve is provided in the ventilation pipe that connects through the first passage and the fourth passage to restrict air to only flow from the first passage towards the fourth passage.

6. The pump as claimed in claim 1, wherein an oil pipe for the oil to flow through is disposed to and penetrate through the lid.

7. The pump as claimed in claim 1, wherein a lever is disposed on the top of the regulating member to facilitate operation of the regulating member.

8. The pump as claimed in claim 1, wherein an oil pouring orifice is further disposed to the lid.

9. An oil suction and oil drain pump comprising:

a barrel containing an oil storage space;

a lid closing upon a top of the barrel, a pipe and a ventilation pipe being externally disposed to the barrel, the pipe containing a pull rod, one end of the pull rod in the pipe being connected to a compression portion to compress the air flowing through the pipe, and another end of the pull rod extending upward to expose out of the pipe, and a lower end of the ventilation pipe extending to connect through the pipe, and an upper end of the ventilation pipe extending to reach the lid;

a first airway located on the lid and extending to penetrate the lid, the first airway containing a first air inlet and a first air outlet, the first air inlet connecting through the upper end of the ventilation pipe, and the first air outlet being located on one side of the lid;

a second airway located on the lid and containing a first through hole and a second through hole, the first through hole being located on one side of the lid, and the second through hole connecting through the oil storage space;

a third airway located on the lid and extending to penetrate the lid, the third airway containing a second air inlet and a second air outlet, the second air inlet being located on one side of the lid, and the second air inlet, the first through hole, and the first air outlet being arranged side by side;

an air duct having one end connected through the second air outlet of the third airway, another end being connected through the pipe at where close to an upper end of the pipe, the third airway, the air duct, the pipe, the ventilation pipe, and the first airway being connected through in sequence for air circulation; and

a regulating member disposed on the lid to execute alternative switch of relatively connecting through the first air outlet of the first airway, the first through hole of the second airway, and the second air inlet of the third airway;

the regulating member is switched to allow the first through hole of the second airway to connect through the second air inlet of the third airway while connecting the first air outlet of the first airway through the ambient air for the air in the oil storage space to be drained out of the first air outlet of the first airway for producing suction during the oil suction operation; and

the regulating member is switched to connect the first air outlet through the first through hole of the second airway while connecting the ambient air through the second air inlet of the third airway for the air to enter through the second through hole of the second airway into the air storage space for producing pressure during oil drain operation.

10. A pump as claimed in claim 9, wherein the regulating member is disposed with an air duct;

the first through hole of the second airway connects through the second air inlet via the air duct in oil suction operation; and

the first air outlet of the first airway connects through the first through hole of the second airway via the air duct in oil drain operation.

11. The pump as claimed in claim 10, wherein a leak-proof structure is disposed at openings respectively of the first air outlet of the first airway, the first through hole of the second airway, and the second air inlet of the third airway;

the leak-proof structure being assembled with the regulating member to prevent airflow to escape from where between the leak-proof structure and the regulating member when the regulating member is executing alternative switch for regulating.

12. The pump as claimed in claim 10, wherein a one-way valve is provided in the ventilation pipe to restrict the air to flow only from the pipe towards the first airway.

13. The pump as claimed in claim 9, wherein an oil pipe for oil circulation is disposed to and penetrating through the lid.

14. The pump as claimed in claim 9, wherein an oil pouring orifice is further disposed to the lid.