Double-outlet oil pump

Abstract

The utility model relates to the field of liquid variable-capacity machinery, and provides a double-outlet oil pump which comprises a pump body and a power unit, a pump cover is arranged on the pump body in a sealing mode, a conveying cavity and a filtering cavity are arranged in the pump body, and a first output pipe, a second output pipe and a suction pipe are arranged on the conveying cavity. An oil supply cavity is formed between the filter cavity and the inner cavity of the pump body; the power unit comprises a first gear pair and a second gear pair, the center shaft of one gear in the first gear pair and the center shaft of one gear in the second gear pair are coaxially arranged, and the center shafts penetrate through the conveying cavity and the pump cover. The inside of the conveying cavity is divided into two independent spaces so that two gear pairs can be placed, one gear is arranged on the same center shaft, and the purpose of synchronously driving the first gear pair and the second gear pair to rotate is achieved. Then, one suction oil way supplies oil through the first pumping chamber; and the other oil supply channel supplies oil through the oil supply cavity and the second pumping chamber, so that two relatively independent oil supply channels are formed, and the use flexibility and practicability are improved.

Description

Technical Field

[0001] The utility model relates to the field of liquid variable capacity machinery, in particular to a double-outlet oil pump. Background Art

[0002] The oil pump is a light and compact pump, which is divided into three categories: in-line, distributed and single-body. The oil pump needs a power source to operate, and the camshaft at the bottom is driven by the engine crankshaft gear. The amount, pressure and time of oil pumping must be very precise and automatically adjusted according to the load. The oil pump is a component with fine processing and complex manufacturing process.

[0003] The development of oil pumps is also changing with each passing day. In some environments with small usage or installation space, if multiple oil pumps are used to supply oil to different equipment respectively, a larger space will be needed, resulting in the inability to install other equipment in a smaller space, or other equipment cannot be installed; at the same time, it also increases the cost of use. Utility Model Content

[0004] The utility model aims to provide a double-outlet oil pump, aiming to improve the problem that the existing oil pump cannot supply oil to a plurality of devices at the same time.

[0005] To achieve the above purpose, the utility model adopts the following technical solution: a double-outlet oil pump, comprising:

[0006] A pump body, a pump cover is sealed on the top opening of which, a delivery cavity and a filter cavity are arranged inside the pump body, a first output pipe and a second output pipe connected to the pump body, and a suction pipe connected to the filter cavity are arranged on the delivery cavity; an oil supply cavity is formed between the filter cavity and the inner cavity of the pump body; and

[0007] A power unit, comprising a first gear pair and a second gear pair, wherein the central axes of one of the first gear pair and the second gear pair are coaxially arranged, the central axis passes through the delivery chamber and the pump cover, and the delivery chamber is provided with a first pumping chamber for installing the first gear pair and a second pumping chamber for installing the second gear pair;

[0008] The oil outlet of the suction pipe is arranged in the oil suction area of ​​the first pumping chamber, and the first output pipe is arranged in the discharge area of ​​the first pumping chamber;

[0009] The pump body is provided with a first oil inlet pipe connected to the oil supply chamber and a second oil inlet pipe connected to the oil suction area of ​​the second pumping chamber. The oil inlet of the second output pipe is arranged in the discharge area of ​​the second pumping chamber.

[0010] Preferably, a plurality of windows are circumferentially spaced apart on the side wall of the filter cavity, and a filter net is disposed on the window.

[0011] Preferably, the pump body is provided with an oil drain pipe communicating with the oil supply chamber and a sealing plug for sealing, blocking or opening the oil drain pipe.

[0012] Preferably, the pump body is provided with a bottom opening opposite to the top opening, and the pump body is provided with a bottom cover sealingly covering the bottom opening; the oil drain pipe is arranged on the bottom cover.

[0013] Preferably, the pump body is provided with a pressure relief pipeline connected to the filter chamber.

[0014] Preferably, the first output pipe is provided with a return pipe connected to the filter cavity.

[0015] Preferably, a reflux chamber is provided in the filter chamber, and at least one flow hole communicating with the filter chamber is provided on the reflux chamber, and the output port of the reflux pipe is provided in the reflux chamber.

[0016] Preferably, a flange structure is provided on the end surface of the top opening of the pump body.

[0017] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0018] 1. Two independent spaces are separated in the delivery chamber to place two sets of gear pairs, and one of the gears is set on the same central axis to achieve the purpose of synchronously driving the first gear pair and the second gear pair to rotate. Then, one suction oil path is supplied through the first pumping chamber; the other is supplied through the oil supply chamber and the second pumping chamber, thus forming two relatively independent oil supply paths, which improves the flexibility and practicality of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the double-outlet oil pump described in the utility model;

[0020] Figure 2 It is a structural schematic diagram of the double-outlet oil pump of the utility model from the bottom opening perspective;

[0021] Figure 3 It is a cross-sectional view of the double-outlet oil pump described in the utility model;

[0022] Figure 4 It is a cross-sectional view of the double-outlet oil pump of the utility model at the position of the first pumping chamber;

[0023] Figure 5 It is a cross-sectional view of the double-outlet oil pump of the utility model at the position of the second pumping chamber;

[0024] Description of reference numerals:

[0025] 10. Pump body; 101. Pump cover; 102. Delivery chamber; 103. Filter chamber; 104. First output pipe; 105. Second output pipe; 106. Suction pipe; 107. Oil supply chamber; 108. First oil inlet pipe; 109. Second oil inlet pipe; 110. Oil drain pipe; 111. Bottom cover; 112. Pressure relief pipeline; 113. Flange structure;

[0026] 1021, first pumping chamber; 1022, second pumping chamber;

[0027] 1031, filter;

[0028] 1041, reflux pipe; 1042, reflux chamber; 1043, flow hole;

[0029] 20. Power unit; 201. First gear pair; 202. Second gear pair; 203. Center axis. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] In addition, it should be noted that the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] When an element is referred to as being “fixed to” or “disposed on” or “provided on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0033] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0034] Example

[0035] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the present embodiment provides a double-outlet oil pump, including a pump body 10 and a power unit 20, a pump cover 101 is sealed on the top opening of the pump body 10, a delivery chamber 102 and a filter chamber 103 are arranged in the pump body 10, the delivery chamber 102 is provided with a first output pipe 104 and a second output pipe 105 connected to the outside of the pump body 10, and a suction pipe 106 connected to the filter chamber 103; an oil supply chamber 107 is formed between the filter chamber 103 and the inner cavity of the pump body; the power unit 20 includes a first gear pair 201 and a second gear pair 202, the central axis 203 of one of the gears in the first gear pair 201 and the second gear pair 202 is coaxially arranged, the central axis 203 passes through the delivery chamber 102 and the pump cover 101, and the central axis 203 is provided with a bearing and a sealing gasket to maintain the sealing of the inner cavity of the pump body 10.

[0036] The delivery chamber 102 is provided with a first pumping chamber 1021 for installing the first gear pair 201 and a second pumping chamber 1022 for installing the second gear pair 202; the oil outlet of the suction pipe 106 is arranged in the oil suction area of ​​the first pumping chamber 1021, and the first output pipe 104 is arranged in the discharge area of ​​the first pumping chamber 1021; the pump body 10 is provided with a first oil inlet pipe 108 connected to the oil supply chamber 107, and a second oil inlet pipe 109 connected to the oil suction area of ​​the second pumping chamber 1022, and the oil inlet of the second output pipe 105 is arranged in the discharge area of ​​the second pumping chamber 1022.

[0037] Specifically, a filter cover is installed in the pump body 10, and the pump body 10 is divided into an oil supply chamber 107 and a filter chamber 103, and then a delivery chamber 102 is separated in the pump body 10, and the delivery chamber 102 is further divided into a first pumping chamber 1021 and a second pumping chamber 1022. When the first gear pair 201 and the second gear pair 202 are synchronously driven to rotate by the central shaft 203, the first oil inlet pipe 108 sucks the fluid medium (which can be engine oil or lubricating oil, etc.) from the oil supply chamber 107 into the second pumping chamber 1022, and then the fluid medium is output through the second output pipe 105 after the second gear pair 202 is pressurized. At the same time, the first pumping chamber 1021 sucks the fluid medium through the suction pipe 106, and the suction pipe 106 is located in the filter chamber 103, and after the first gear pair 201 is pressurized, the fluid medium is output through the first output pipe 104. In this way, two delivery pipelines are formed, which can supply oil to two devices at the same time, thereby improving practicality.

[0038] The fluid medium in the pump body 10 is transported from the outside to the oil supply chamber 107 through the first oil inlet pipe 108, and then flows into the filter chamber 103 after being filtered. For example, it is filtered through the filter screen 1031 to isolate impurities to avoid damage to the gear pair, thereby improving practicality and safety.

[0039] like Figure 3 As shown, in this embodiment, a plurality of windows are arranged at intervals on the circumference of the side wall of the filter chamber 103, and a filter screen 1031 is arranged on the window. The filter screen 1031 can be an oil pump filter screen, which can filter out impurities in the oil, so as to ensure the stable operation of the dual-outlet oil pump and improve the service life.

[0040] like Figure 1 As shown, in this embodiment, the pump body 10 is provided with an oil drain pipe 110 connected to the oil supply chamber 107 and a sealing plug for sealing or opening the oil drain pipe 110. The setting of the oil drain pipe 110 can release the fluid medium in the inner cavity of the pump body 10 for cleaning or to avoid oil accumulation, thereby improving practicality.

[0041] like Figure 1 As shown, in this embodiment, the pump body 10 is provided with a bottom opening opposite to the top opening, and the pump body 10 is provided with a bottom cover 111 sealingly covering the bottom opening; the oil drain pipe 110 is provided on the bottom cover 111. The bottom of the pump body 10 can be disassembled, so that after the fluid medium in the pump body 10 is discharged, the bottom cover 111 is disassembled, and the oil supply cavity 107 can be cleaned, and the filter cavity 103 can be disassembled for cleaning, that is, the interior of the pump body 10 can be cleaned, so that the pump body 10 can be cleaned and the practicality is improved.

[0042] like Figure 1 and Figure 3 As shown, in this embodiment, the pump body 10 is provided with a pressure relief pipe 112 connected to the filter chamber 103. The pressure relief pipe 112 is in a closed state under normal circumstances and can be closed by a sealing plug or a valve. If the pressure in the pump body 10 increases and becomes dangerous, the pressure relief pipe 112 can be opened to release the fluid medium for pressure relief, which has good practicality.

[0043] like Figure 3 As shown, in this embodiment, a return pipe 1041 connected to the filter chamber 103 is provided on the first output pipe 104. During use, there may be fluid medium left on the output pipe, or there may be excess fluid medium due to a large supply amount. The setting of the return pipe 1041 can allow the fluid medium to flow back into the filter chamber 103, thereby reducing the consumption of the fluid medium and improving practicality.

[0044] like Figure 3As shown, in this embodiment, a reflux chamber 1042 is provided in the filter chamber 103, and at least one flow hole 1043 communicating with the filter chamber 103 is provided on the reflux chamber 1042, and the output port of the reflux pipe 1041 is provided in the reflux chamber 1042. The provision of the reflux chamber 1042 facilitates the reflux of the fluid medium, and avoids the fluid medium in the filter chamber 103 being unable to reflux due to high pressure, and the reflux effect can be smoothly performed through the reflux chamber 1042.

[0045] like Figure 5 As shown, in this embodiment, a flange structure 113 is provided on the end face of the top opening of the pump body 10, that is, an outwardly expanding annular mounting surface is provided on the end face, and threaded holes are arranged at intervals on the annular mounting surface, so as to achieve the purpose of installing the double-outlet oil pump by means of flange end face butt locking, thereby achieving a stable installation effect.

[0046] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A double-outlet oil pump, characterized in that: include: A pump body, a pump cover is sealed on the top opening of which, a delivery cavity and a filter cavity are arranged inside the pump body, a first output pipe and a second output pipe connected to the pump body, and a suction pipe connected to the filter cavity are arranged on the delivery cavity; an oil supply cavity is formed between the filter cavity and the inner cavity of the pump body; and A power unit, comprising a first gear pair and a second gear pair, wherein the central axes of one of the first gear pair and the second gear pair are coaxially arranged, the central axis passes through the delivery chamber and the pump cover, and the delivery chamber is provided with a first pumping chamber for installing the first gear pair and a second pumping chamber for installing the second gear pair; The oil outlet of the suction pipe is arranged in the oil suction area of ​​the first pumping chamber, and the first output pipe is arranged in the discharge area of ​​the first pumping chamber; The pump body is provided with a first oil inlet pipe connected to the oil supply chamber and a second oil inlet pipe connected to the oil suction area of ​​the second pumping chamber. The oil inlet of the second output pipe is arranged in the discharge area of ​​the second pumping chamber.

2. The dual-outlet oil pump according to claim 1, characterized in that: A plurality of windows are arranged at intervals on the circumference of the side wall of the filter cavity, and a filter net is arranged on the window.

3. The dual-outlet oil pump according to claim 1, characterized in that: The pump body is provided with an oil drain pipe communicated with the oil supply cavity and a sealing plug for sealing, blocking or opening the oil drain pipe.

4. The dual-outlet oil pump according to claim 3, characterized in that: The pump body is provided with a bottom opening opposite to the top opening, and the pump body is provided with a bottom cover sealingly covering the bottom opening; the oil drain pipe is arranged on the bottom cover.

5. The dual-outlet oil pump according to claim 1, characterized in that: The pump body is provided with a pressure relief pipeline connected to the filter cavity.

6. The dual-outlet oil pump according to claim 1, characterized in that: The first output pipe is provided with a return pipe connected to the filter cavity.

7. The dual-outlet oil pump according to claim 6, characterized in that: A reflux chamber is arranged in the filter chamber, and at least one flow hole communicating with the filter chamber is arranged on the reflux chamber. The output port of the reflux pipe is arranged in the reflux chamber.

8. The dual-outlet oil pump according to claim 1, characterized in that: The end surface of the top opening of the pump body is provided with a flange structure.

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