Pneumatic oil well pump

Abstract

The utility model belongs to the field of oil well pumps, and particularly relates to a pneumatic oil well pump which comprises a cylinder body, a piston rod, a pneumatic control valve and an energy storage tank, an oil storage cylinder barrel and an air storage cylinder barrel are respectively arranged on the cylinder body, an oil inlet connector and an oil outlet connector which are communicated with the oil storage cylinder barrel are respectively arranged on the cylinder body, and an oil pumping piston is arranged in the oil storage cylinder barrel. A pneumatic piston is arranged in the air storage cylinder barrel, the oil pumping piston and the pneumatic piston are arranged at the two ends of the piston rod in a linkage mode respectively, the pneumatic control valve is connected to the cylinder body and communicated with the air storage cylinder barrel, and the pneumatic control valve enables compressed air to drive the pneumatic piston to do reciprocating motion in the air storage cylinder barrel. The pneumatic piston enables the piston rod to drive the oil pumping piston to reciprocate in the oil storage cylinder barrel, and the energy storage tank is connected to the cylinder body; the pneumatic oil well pump adopts a piston type structural design, realizes suction and discharge of oil through reciprocating motion of the piston, and has the advantages of explosion prevention and corrosion resistance; and the air pressure is adjusted through the pneumatic control valve, so that oil with different concentrations can be sucked and discharged flexibly, and the applicability is wider.

Description

Technical Field

[0001] This utility model belongs to the field of oil pump technology, specifically relating to a pneumatic oil pump. Background Technology

[0002] Currently, pumps are the most commonly used equipment in oil extraction processes, but most of these pumps are electrically driven. While electric oil pumps can meet the requirements of most production processes, flammable gas volatilization or leakage is inevitable in oil refining, chemical, and explosion-proof industries. When electric oil pumps (motors, wiring, switches) generate electrical sparks, fires and explosions can easily occur, posing safety hazards to production. Therefore, electric oil pumps cannot meet the requirements for use in explosion-proof environments. Furthermore, most existing electric oil pumps have rated power. When pumping oils of different concentrations (gasoline, kerosene, diesel, engine oil, hydraulic oil), the load on the electric pump motor varies. Pumping higher concentration oils can easily cause the motor to burn out, resulting in poor applicability and flexibility of these electric oil pumps. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a pneumatic oil pump that can meet the requirements of explosion-proof applications and has wide applicability.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A pneumatic oil pump includes a cylinder body, a piston rod, a pneumatic control valve, and an energy storage tank disposed within the cylinder body. The cylinder body is respectively provided with an oil storage cylinder and a gas storage cylinder. The cylinder body is respectively provided with an oil inlet and an oil outlet connected to the oil storage cylinder. An oil-drawing piston is disposed within the oil storage cylinder, and a pneumatic piston is disposed within the gas storage cylinder. The oil-drawing piston and the pneumatic piston are respectively linked and disposed at both ends of the piston rod. The pneumatic control valve is connected to the cylinder body and communicates with the gas storage cylinder. The pneumatic control valve causes compressed gas to drive the pneumatic piston to reciprocate within the gas storage cylinder. The pneumatic piston causes the piston rod to drive the oil-drawing piston to reciprocate within the oil storage cylinder. The energy storage tank is connected to the cylinder body and is used to enhance the oil pressure at the oil outlet.

[0005] In some embodiments, a first oil storage chamber and a second oil storage chamber are formed on both sides of the oil-suction piston inside the oil storage cylinder. An oil outlet channel connected to the oil outlet port is provided inside the cylinder. A first oil outlet channel and a second oil outlet channel are respectively provided inside the cylinder and communicate with the first oil storage chamber and the second oil storage chamber. The first oil outlet channel and the second oil outlet channel are respectively connected to the oil outlet channel. A first oil outlet check valve and a second oil outlet check valve are respectively provided inside the first oil outlet channel and the second oil outlet channel. An oil inlet channel connected to the oil inlet port is provided inside the cylinder. A first oil inlet channel and a second oil inlet channel are respectively provided inside the cylinder and communicate with the first oil storage chamber and the second oil storage chamber. The first oil inlet channel and the second oil inlet channel are respectively connected to the oil inlet channel. A first oil inlet check valve and a second oil inlet check valve are respectively provided inside the first oil inlet channel and the second oil inlet channel.

[0006] In some embodiments, two sealing grooves are respectively provided on the peripheral wall of the oil sucker piston, and two sealing rings that seal with the oil storage cylinder are respectively provided in the two sealing grooves.

[0007] In some embodiments, the energy storage tank includes an energy storage cylinder, an end cap, an energy storage piston, and an energy storage spring. The energy storage cylinder is connected between the cylinder body and the end cap. The energy storage piston is disposed inside the energy storage cylinder. The energy storage spring is disposed between the end cap and the energy storage piston. An oil hole is provided inside the cylinder body, connecting the energy storage cylinder and the oil outlet channel. An energy storage oil chamber is formed inside the energy storage cylinder corresponding to the energy storage piston and the oil storage channel. An oil outlet is connected between the energy storage oil chamber and the oil outlet.

[0008] In some embodiments, the energy storage piston is provided with two O-rings that seal with the energy storage cylinder.

[0009] In some embodiments, multiple bolts are connected between the end cap and the cylinder body, and the multiple bolts are distributed in a ring array.

[0010] In some embodiments, a first air storage chamber and a second air storage chamber are formed on both sides of the pneumatic piston in the air storage cylinder, and a first vent hole and a second vent hole are respectively provided in the cylinder body, which are connected to the air hole of the pneumatic control valve and the first air storage chamber and the second air storage chamber.

[0011] In some embodiments, the pneumatic piston is provided with two sealing grooves, and two O-rings that seal with the gas storage cylinder are respectively provided in the two sealing grooves.

[0012] In some embodiments, the cylinder body includes a middle cylinder body, a left cylinder body, and a right cylinder body, the oil reservoir cylinder is sealed between the middle cylinder body and the left cylinder body, and the air reservoir cylinder is sealed between the middle cylinder body and the right cylinder body.

[0013] In some embodiments, the oil inlet and oil outlet are threadedly connected to the intermediate cylinder body, and the oil inlet and oil outlet are respectively provided with multiple anti-detachment grooves exposed outside the intermediate cylinder body.

[0014] The beneficial effects of this utility model are as follows: This pneumatic oil pump adopts a piston structure design, realizing the suction and discharge of oil through the reciprocating motion of the piston, and has the advantages of explosion-proof and corrosion-resistant. It eliminates the need for a power supply in the production site, avoiding the safety hazards caused by electrical sparks, thus meeting the requirements for use in explosion-proof environments. By adjusting the air pressure through a pneumatic control valve, it can flexibly handle the suction and discharge of oils of different concentrations, making it more applicable. Furthermore, the energy storage tank can store and pressurize the oil at the outlet, balancing the pulse fluctuations of the oil and improving the oil extraction efficiency, thereby ensuring stable and continuous oil discharge. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0016] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0017] Figure 2 This is a left view of an embodiment of the present utility model;

[0018] Figure 3 for Figure 2 Sectional view of AA;

[0019] Figure 4 for Figure 2 BB section view. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0022] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0024] like Figure 1-3 As shown, a pneumatic oil pump includes a cylinder body 1, a piston rod 2, a pneumatic control valve 3, and an energy storage tank 4 disposed within the cylinder body 1. The cylinder body 1 is respectively provided with an oil storage cylinder 5 and a gas storage cylinder 6. The cylinder body 1 is respectively provided with an oil inlet port 11 and an oil outlet port 12 connected to the oil storage cylinder 5. An oil-drawing piston 51 is disposed within the oil storage cylinder 5, and a pneumatic piston 61 is disposed within the gas storage cylinder 6. The oil-drawing piston 51 and the pneumatic piston 61 are respectively linked and disposed at both ends of the piston rod 2. The pneumatic control valve 3 is connected to the cylinder body 1 and communicates with the gas storage cylinder 6. The pneumatic control valve 3 causes compressed gas to drive the pneumatic piston 61 to reciprocate within the gas storage cylinder 6. The pneumatic piston 61 causes the piston rod 2 to drive the oil-drawing piston 51 to reciprocate within the oil storage cylinder 5. The energy storage tank 4 is connected to the cylinder body 1 and is used to enhance the oil pressure at the oil outlet 10. This pneumatic oil pump adopts a piston-type structure design, using the reciprocating motion of the piston to achieve oil suction and discharge. It features explosion-proof and corrosion-resistant advantages. It eliminates the need for a power supply in the production area, avoiding the safety hazards of electrical sparks and thus meeting the requirements for use in explosion-proof environments. The air pressure can be adjusted via a pneumatic control valve to flexibly handle the suction and discharge of oils of different concentrations, broadening its applicability. Furthermore, the energy storage tank can store and pressurize the oil at the outlet, balancing oil pulse fluctuations and improving oil extraction efficiency, thereby ensuring stable and continuous oil discharge.

[0025] like Figure 1 , 3As shown in Figure 4, a first oil storage chamber 52 and a second oil storage chamber 53 are formed on both sides of the oil-suction piston 51 in the oil storage cylinder 5. An oil outlet channel 100 connected to the oil outlet port 12 is provided inside the cylinder body 1. A first oil outlet channel 101 and a second oil outlet channel 102, respectively connected to the first oil storage chamber 52 and the second oil storage chamber 53, are also provided inside the cylinder body 1. The first oil outlet channel 101 and the second oil outlet channel 102 are respectively connected to the oil outlet channel 100. The first oil outlet channel 101 and the second oil outlet channel 102 are respectively provided with… A first oil outlet check valve 13 and a second oil outlet check valve 14 are provided. An oil inlet channel 103 connected to an oil inlet port 11 is provided within the cylinder body 1. A first oil inlet channel 104 and a second oil inlet channel 105 connected to a first oil storage chamber 52 and a second oil storage chamber 53 are respectively provided within the cylinder body 1. The first oil inlet channel 104 and the second oil inlet channel 105 are respectively connected to the oil inlet channel 103. A first oil inlet check valve 15 and a second oil inlet check valve 16 are respectively provided within the first oil inlet channel 104 and the second oil inlet channel 105. By the reciprocating motion of the oil-drawing piston within the oil storage cylinder, the first oil storage chamber and the second oil storage chamber are able to draw and discharge oil. The first oil inlet check valve and the second oil inlet check valve prevent backflow of the drawn oil, and the first oil outlet check valve and the second oil outlet check valve prevent backflow of the discharged oil, thereby enabling the pneumatic oil pump to draw and discharge oil stably and reliably. Two sealing grooves 511 are respectively provided on the peripheral wall of the oil sucker piston 51, and two sealing rings 54 are respectively provided in the two sealing grooves 511 to seal with the oil reservoir cylinder 5. The oil sucker piston seals with the oil reservoir cylinder through the two sealing rings, thereby improving the sealing performance between the oil sucker piston and the oil reservoir cylinder.

[0026] like Figure 3As shown, the energy storage tank 4 includes an energy storage cylinder 41, an end cap 42, an energy storage piston 43, and an energy storage spring 44. The energy storage cylinder 41 is connected between the cylinder body 1 and the end cap 42. The energy storage piston 43 is disposed inside the energy storage cylinder 41, and the energy storage spring 44 is disposed between the end cap 42 and the energy storage piston 43. An oil hole 106 is provided inside the cylinder body 1, connecting the energy storage cylinder 41 and the oil outlet channel 100. An energy storage oil chamber 400 is formed inside the energy storage cylinder 41 corresponding to the energy storage piston 43 and the oil storage channel 100. An oil outlet hole 401 is connected between the energy storage oil chamber 400 and the oil outlet 10. The energy storage piston compresses the energy storage spring, which can pressurize the oil inside the energy storage oil chamber, thereby enabling the energy storage tank to pressurize the oil in the oil outlet channel, balance the pulse fluctuations of the oil, improve the oil extraction efficiency, and thus ensure stable and continuous oil discharge. The energy storage piston 43 is equipped with two O-rings 44 that seal against the energy storage cylinder 41. The sealing performance between the energy storage piston and the energy storage cylinder is improved through these two O-rings. Multiple bolts 45 are connected between the end cap 42 and the cylinder body 1, arranged in a circular array. These bolts provide reinforcement and fixation, ensuring a more secure connection between the energy storage tank and the cylinder body.

[0027] like Figure 3 and 4 As shown, a first air storage chamber 62 and a second air storage chamber 63 are formed on both sides of the pneumatic piston 61 within the air storage cylinder 6. A first vent hole 107 and a second vent hole 108 are respectively provided within the cylinder body 1, connecting the air orifice of the pneumatic control valve 3 to the first air storage chamber 62 and the second air storage chamber 63. The air storage cylinder is connected to the pneumatic control valve through the first and second air storage chambers, thereby compressing gas to drive the pneumatic piston to reciprocate within the air storage cylinder. Two sealing grooves 611 are respectively provided on the pneumatic piston 61, and two O-rings 64 are respectively provided in the two sealing grooves 611 to seal against the air storage cylinder 6. The use of double O-rings in conjunction with the air storage cylinder improves the sealing performance between the pneumatic piston and the air storage cylinder.

[0028] like Figure 1 and 2As shown, the cylinder body 1 includes a middle cylinder body 1000, a left cylinder body 1001, and a right cylinder body 1002. An oil reservoir 5 is sealed between the middle cylinder body 1000 and the left cylinder body 1001, and an air reservoir 6 is sealed between the middle cylinder body 1000 and the right cylinder body 1002. The cylinder body is composed of the middle cylinder body, left cylinder body, and right cylinder body, facilitating assembly with the oil reservoir and air reservoir, making assembly more convenient. The oil inlet port 11 and oil outlet port 12 are threaded onto the middle cylinder body 1000, and each oil inlet port 11 and oil outlet port 12 has multiple anti-loosening grooves 1003 protruding from the middle cylinder body 1000. The oil inlet and oil outlet ports are threaded to the middle cylinder body, resulting in higher assembly efficiency, and the anti-loosening grooves prevent the oil pipes from loosening, ensuring a tighter connection between the oil inlet and oil outlet ports.

[0029] The working principle of this pneumatic oil pump is as follows: Figure 3 , 4 As shown, when compressed gas enters the first gas storage chamber 62 of the gas storage cylinder 6 through the pneumatic control valve 3 and the first vent 107, the compressed gas drives the pneumatic piston 61 to move to the left. The pneumatic piston 61 drives the oil sucker piston 51 to move to the left through the piston rod 2. The first oil inlet check valve 15 in the first oil inlet channel 104 opens, and the oil is sucked into the first oil storage chamber 52. The oil sucker piston 51 pushes out the oil in the second oil storage chamber 53. The second oil outlet check valve 14 in the second oil outlet channel 105 opens, and the oil in the second oil outlet channel 102 is discharged from the oil outlet port 12 through the oil outlet channel 100 and the energy storage tank 4. When compressed gas enters the second air storage chamber 63 of the air storage cylinder 6 through the pneumatic control valve 3 and the second vent 108, the compressed gas drives the pneumatic piston 61 to move to the right. The pneumatic piston 61 drives the oil sucker piston 51 to move to the right through the piston rod 2. The second oil inlet check valve 16 in the second oil inlet channel 105 opens, and the oil is sucked into the second oil storage chamber 53. The oil sucker piston 51 pushes out the oil in the first oil storage chamber 52. The first oil outlet check valve 13 in the first oil outlet channel 101 opens, and the oil in the first oil outlet channel 101 is discharged from the oil outlet port 12 through the oil outlet channel 100 and the energy storage tank 4.

[0030] The above description is only one embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model; the scope of protection of the present utility model is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the utility model are within the scope of protection of the present utility model patent.

Claims

1. A pneumatic oil pump, characterized in that: The system includes a cylinder body, a piston rod, a pneumatic control valve, and an energy storage tank disposed within the cylinder body. The cylinder body is equipped with an oil storage cylinder and a gas storage cylinder. The cylinder body also has an oil inlet and an oil outlet connected to the oil storage cylinder. An oil-pulling piston is disposed within the oil storage cylinder, and a pneumatic piston is disposed within the gas storage cylinder. The oil-pulling piston and the pneumatic piston are linked and disposed at both ends of the piston rod. The pneumatic control valve is connected to the cylinder body and communicates with the gas storage cylinder. The pneumatic control valve causes compressed gas to drive the pneumatic piston to reciprocate within the gas storage cylinder. The pneumatic piston causes the piston rod to drive the oil-pulling piston to reciprocate within the oil storage cylinder. The energy storage tank is connected to the cylinder body and is used to enhance the oil pressure at the oil outlet.

2. The pneumatic oil pump according to claim 1, characterized in that: The oil storage cylinder has a first oil storage chamber and a second oil storage chamber formed on both sides corresponding to the oil sucker piston. The cylinder body is provided with an oil outlet channel connected to the oil outlet port. The cylinder body also has a first oil outlet channel and a second oil outlet channel that communicate with the first and second oil storage chambers, respectively. The first and second oil outlet channels are respectively connected to the oil outlet channel. A first oil outlet check valve and a second oil outlet check valve are respectively installed in the first and second oil outlet channels. The cylinder body also has an oil inlet channel that communicates with the oil inlet port. The cylinder body also has a first oil inlet channel and a second oil inlet channel that communicate with the first and second oil storage chambers, respectively. The first and second oil inlet channels are respectively connected to the oil inlet channel. A first oil inlet check valve and a second oil inlet check valve are respectively installed in the first and second oil inlet channels.

3. The pneumatic oil pump according to claim 2, characterized in that: The oil extraction piston has two sealing grooves on its peripheral wall, and two sealing rings that seal with the oil storage cylinder are respectively installed in the two sealing grooves.

4. The pneumatic oil pump according to claim 2, characterized in that: The energy storage tank includes an energy storage cylinder, an end cap, an energy storage piston, and an energy storage spring. The energy storage cylinder is connected between the cylinder body and the end cap. The energy storage piston is disposed inside the energy storage cylinder. The energy storage spring is disposed between the end cap and the energy storage piston. An oil hole is provided inside the cylinder body, connecting the energy storage cylinder and the oil outlet channel. An energy storage oil chamber is formed inside the energy storage cylinder corresponding to the energy storage piston and the oil storage channel. An oil outlet is connected between the energy storage oil chamber and the oil outlet.

5. The pneumatic oil pump according to claim 4, characterized in that: The energy storage piston is provided with two O-rings that are sealed to the energy storage cylinder.

6. The pneumatic oil pump according to claim 4, characterized in that: The end cap and the cylinder are connected by multiple bolts, which are arranged in a ring array.

7. The pneumatic oil pump according to claim 1 or 2, characterized in that: The gas storage cylinder has a first gas storage chamber and a second gas storage chamber formed on both sides of the pneumatic piston. The cylinder body is provided with a first vent hole and a second vent hole that connect the air hole of the pneumatic control valve to the first gas storage chamber and the second gas storage chamber.

8. The pneumatic oil pump according to claim 7, characterized in that: The pneumatic piston is provided with two sealing grooves, and two O-rings that seal with the gas storage cylinder are respectively provided in the two sealing grooves.

9. The pneumatic oil pump according to claim 1, characterized in that: The cylinder body includes a middle cylinder body, a left cylinder body, and a right cylinder body. The oil reservoir cylinder is sealed between the middle cylinder body and the left cylinder body, and the air reservoir cylinder is sealed between the middle cylinder body and the right cylinder body.

10. The pneumatic oil pump according to claim 9, characterized in that: The oil inlet and oil outlet are threadedly connected to the intermediate cylinder body, and the oil inlet and oil outlet are respectively provided with multiple anti-detachment grooves exposed outside the intermediate cylinder body.

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