LU502355B1

LU502355B1 - Split-body scraper pump capable of aiding motor operation

Info

Publication number: LU502355B1
Application number: LU502355A
Authority: LU
Inventors: Chuanjin Li; Yaobang Chen; Junzhong Xu; Wenbin Ji; Xiao Huang
Original assignee: Jiangsu Jinhu Fuel Feed Pump Co Ltd
Priority date: 2021-08-03
Filing date: 2021-08-06
Publication date: 2022-12-28
Also published as: ZA202202614B; CN113819055A; WO2022110892A2; WO2022110892A3

Abstract

The invention relates to the technical field of split-type vane pumps, and discloses a split-type vane pump capable of assisting in operation of motors including a first pump body, a second pump body, an installing plate and a motor, wherein the motor is connected with the installing plate, the first pump body is connected with the second pump body, a transmission mechanism is arranged between the first pump body and the second pump body, a protection mechanism and a clamping mechanism are arranged on the out wall of the first pump body and the second pump body, the first pump body and the second pump body form a main pump body, the transmission mechanism includes a rotary shaft, an oil outlet, an oil inlet, a installing block, a pump vane, a clamping block, a sliding groove and a sealing strip. The split-type vane pump capable of assisting in operation of motors provided by the invention can transport liquid, compared with ordinary vane pumps, the vane pump provided by the invention has advantages such as, capability to replace the inside vanes, capability to facilitate the daily disassembly and maintenance to the vane pump, and capability to protect the inside and to avoid excessive inside pressure.

Description

BL-5521 LU502355 SPLIT-BODY SCRAPER PUMP CAPABLE OF AIDING MOTOR

OPERATION

TECHNICAL FIELD OF THE INVENTION The invention relates to the technical field of split-type vane pumps, in particular to a split-type vane pump capable of assisting in operation of motors.

DESCRIPTION OF THE PRIOR ART A vane pump is a pump in which vanes in the rotor slot touch the pump housing (stator ring), and press the absorbed liquid from the oil inlet side to the oil outlet side. When the rotor of the vane pump rotates, the tip of the vane tightly rubs on the inside surface of the stator under the action of centrifugal force and pressure oil. In this way, the working volume formed by two vanes and the inside surfaces of the rotor and the stator, firstly becomes large from small absorbing oil, and then becomes small form large discharging oil, and completes oil absorption and oil discharge once to the vanes’ one rotation. After the existing vane pump 1s used, people do not facilitate replacing the inside vanes of the vane pump, and a lot of tedious time 1s required for disassembly and assembly during daily maintenance, which affects the normal use efficiency of the vane pump. In addition, the inside liquid cannot be observed during the use of the vane pump, and its change 1s not easily seen after happened.

SUMMARY OF THE INVENTION (1) Technical problems to be solved Aimed at the defects of the prior art, the invention provides a split-type vane pump capable of assisting in operation of motors, which has capability to replace the inside vanes, facilitate the daily disassembly and maintenance to the vane pump, further protect its inside from excessive inside pressure, and use the power of oil for generating electricity, and other advantages, so as to solve the problems in the used existing vane pump, such as inconvenience for replacement to the inside vanes of the vane pump, a lot of tedious time required for disassembly and assembly during daily maintenance, influence on the normal use efficiency of the vane pump, in addition, incapability to protect the vane pump’s inside during using it, and excessive inside pressure to cause damage to its parts.

BL-5521 LU502355 (2) Technical solution The present invention provides the following technical solutions: a split-type vane pump capable of assisting in operation of motors comprising a first pump body, a second pump body, an installing plate and a motor, wherein said motor is connected with said installing plate, said first pump body is connected with said second pump body, a transmission mechanism and a power mechanism are arranged between said first pump body and said second pump body, a protection mechanism and a clamping mechanism are arranged on the out wall of said first pump body and said second pump body, and said first pump body and said second pump body form a main pump body.

The split-type vane pump capable of assisting in operation of motors provided by the invention can transport liquid, compared with ordinary vane pumps, the vane pump provided by the invention has advantages such as, capability to replace the inside vanes, capability to facilitate the daily disassembly and maintenance to the vane pump, capability to protect the inside and to avoid excessive inside pressure, and use the power of oil for generating electricity, so as to solve the problems in the used existing vane pump, such as inconvenience for replacement to the inside vanes of the vane pump, a lot of tedious time required for disassembly and assembly during daily maintenance, influence on the normal use efficiency of the vane pump, in addition, incapability to protect the vane pump's inside during using it, and excessive inside pressure to cause damage to its parts.

In a possible embodiment, the transmission mechanism includes a rotary shaft, an oil outlet, an oil inlet, a installing block, a pump vane, a clamping block, a sliding groove and a sealing strip, the rotary shaft passes through the second pump body and is connected with the second pump body and the first pump body, the oil outlet and the oil inlets are both connected with the main pump body, the sliding groove is arranged in the second pump body, the installing block is located in the sliding groove and connected with the second pump body and the first pump body, the clamping block is connected with the pump vane, and the clamping block is connected with the installing block, the sealing strip is connected with the first pump body and the second pump body.

Facilitate the transmission of liquid in the pump body by setting the transmission mechanism, and the replacement to the inside vanes, thus has capability to transport inside liquid according to different vanes thereby ensuring the stable use of the vane pump, and further prevent the reversal of the motor from causing back-flow of the inside liquid

BL-5521 LU502355 thereby ensuring the stable transmission of liquid under the action of the vane pump.

In a possible embodiment, the rotary shaft can rotate relative to the first pump body and the second pump body.

In a possible embodiment, the installing block has a position-limiting groove, the pump vane is located in the position-limiting groove and touches the installing block, and the pump vane can move relative to the installing block, the first pump body and the second pump body are both provided with a installing groove, the sealing strip is located in the installing groove and touches the first pump body and the second pump body.

A clamping block can be easily fixed by arranging the position-limiting groove, so that the vane pump can be replaced and clamped, which facilitates replacement to the inside pump vane.

In a possible embodiment, the shape of the pump vane 1s quadrilateral or triangular.

Setting the shape of the pump vane to be quadrangle facilitates transmission of liquid, and when the motor does not rotate, the liquid 1s in a non-flowing state.

Setting the shape of the pump vane to be triangular enables the liquid to flow at all times, and the flow of liquid can be accelerated during the startup of the motor, thereby ensuring the rapid flow of liquid.

In a possible embodiment, the protection mechanism includes an oil inlet pipe, a safety valve, a switch valve, and an oil outlet pipe, the oil inlet pipe is connected with the oil inlet, the safety valve is connected with the oil inlet pipe, the switch valve is connected with the safety valve, and the oil outlet pipe is connected with the oil outlet.

Facilitate the detection and judgment to the pressure of liquid transported inside the pump body by setting the protection mechanism, thereby ensuring the stability of liquid transported inside the pump body, thus has capability to protect the inside components so as to keep the inside liquid pressure not too high, and further ensure the stable operation of the inside pump.

In a possible embodiment, the oil inlet pipe leads to the oil inlet, the oil outlet pipe leads to the oil outlet, the oil inlet pipe, safety valve and switch valve are arranged leading to the oil outlet pipe, and the safety valve can adjust the safety pressure.

An oil inlet pipe can be connected with an oil outlet pipe by arranging a safety valve, when the inside pressure exceeds a preset value, which facilitates release of pressure so as to protect the pump body.

BL-5521 LU502355 In a possible embodiment, the clamping mechanism includes a first fixing plate, a second fixing plate, a position-limiting rod, a connecting frame and a position-limiting block, the first fixing plate is connected with the first pump body, the second fixing plate is connected with the second pump body, the position-limiting rod is connected with the first fixing plate and the second fixing plate, the connecting frame is connected with the position-limiting block, and the position-limiting block is connected with the position-limiting rod. Facilitate fixation of the first pump body with the second pump body by setting the clamping mechanism, thus has capability to quickly disassemble and assemble the first pump body and the second pump body so as to facilitate daily maintenance to the vane pump and replacement to the inside vanes, and clamp the seal between the first pump body and the second pump body so as to further ensure the normal operation of the vane pump. In a possible embodiment, the position-limiting rod is provided with a clamping groove, the position-limiting block is clamped with the clamping groove, and the position-limiting rod can move relative to the first fixing plate and the second fixing plate. The first fixing plate and the second fixing plate can be restricted by arranging the position-limiting rod, which ensures the connection between the first pump body and the second pump body, further the stability during transmission of liquid. In a possible embodiment, the power mechanism includes a rotor, a plunger and a connecting plate, the rotor is located in the motor and connected with the rotary shaft, and the plunger is located in the rotor, in addition, the plunger can move relative to the rotor, and the connecting plate is connected with the plunger. The power mechanism can facilitate the motor to drive the pump vane while rotating, thereby converting the power of the motor into the power of the pump vane. In addition, when the plunger reaches the limit position, the inside liquid can push the rotor to generate electricity, thereby reducing the electricity loss of the motor. Compared with the prior art, the invention provides a split-type vane pump capable of assisting in operation of motors, which has the following beneficial effects:

1. The invention can facilitate the transmission of liquid in the pump body by setting the transmission mechanism, and the replacement to the inside vanes, thus has capability to transport inside liquid according to different vanes thereby ensuring the stable use of the vane pump, and further prevent the reversal of the motor from causing back-flow of the

BL-5521 LU502355 inside liquid thereby ensuring the stable transmission of liquid under the action of the vane pump.

2. The invention can facilitate the detection and judgment to the pressure of liquid transported inside the pump body by setting the protection mechanism, thereby ensuring 5 the stability of liquid transported inside the pump body, thus has capability to protect the inside components so as to keep the inside liquid pressure not too high, and further ensure the stable operation of the inside pump.

3. The invention can facilitate fixation of the first pump body with the second pump body by setting the clamping mechanism, thus has capability to quickly disassemble and assemble the first pump body and the second pump body so as to facilitate daily maintenance to the vane pump and replacement to the inside vanes, and clamp the seal between the first pump body and the second pump body so as to further ensure the normal operation of the vane pump. It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG 1 is an overall schematic diagram of the split-type vane pump capable of assisting in operation of motors according to the invention. FIG2 is a back view of the split-type vane pump capable of assisting in operation of motors according to the invention. FIG3 is an inside schematic diagram of the motor of the split-type vane pump capable of assisting in operation of motors according to the invention. FIG4 is a schematic diagram of the transmission mechanism of the split-type vane pump capable of assisting in operation of motors according to the invention. FIGS is a schematic diagram of the pump vane of the split-type vane pump capable of assisting in operation of motors according to the invention. FIG.6 is a positional schematic diagram of position-limiting rod of the split-type vane pump capable of assisting in operation of motors according to the invention. Wherein, 1-first pump body, 2-second pump body, 4-motor, 21-rotary shaft, 22-oil outlet, 23-oil inlet, 24-installing block, 25-pump vane, 26-clamping block, 27-sliding groove, 28-sealing strip, 31-oil inlet pipe, 32-safety valve, 33-switch valve, 34-oil outlet pipe, 41-first fixing plate, 42-second fixing plate, 43-position-limiting rod, 44-connecting

BL-5521 LU502355 frame, 45 position-limiting block, 51-rotor, 52-plunger, 53-connecting board.

DETAILED DESCRIPTION OF THE INVENTION The technical solution in the embodiments of the invention will be clearly and completely described below in combination with the figures in the embodiments of the invention. Obviously, the described embodiment is only a part of the embodiments of the invention, rather than all the embodiments.

The examples of the embodiments are shown in the figures, throughout which the same or similar reference numeral indicates the same or similar element or the element having the same or similar function. The embodiment described below with reference to the figures is exemplary, and intended to explain the invention, but should not be construed as a limitation on the invention.

In the description of the invention, it should be understood that the orientation or position terms such as "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", " "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" based on the orientation or position relationship shown in the figures, only facilitate description to the invention and simplification to the description, do not indicate or imply a certainty for the appointed device or element to have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be construed as a limitation on the invention.

In the invention, unless otherwise clearly defined and limited, the terms such as "installation", "connection", "interconnection ", "fixation" should be construed broadly. For example, it may be a fixed connection, a detachable connection, or an integration; it may be a mechanical connection or an electrical connection; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be an internal passage between two components or an interaction between two elements. A person skilled in the art can understand the specific meaning of the above-mentioned terms in the invention according to specific circumstances.

Example 1: As shown in FIGs 1-5 and FIG 7, the invention provides a split-type vane pump capable of assisting in operation of motors including a first pump body 1, a second pump body 2, an installing plate 3 and a motor 4, wherein the motor 4 is connected with the

BL-5521 LU502355 installing plate 3, the first pump body 1 is connected with the second pump body 2, a transmission mechanism 1s arranged between the first pump body 1 and the second pump body 2, a protection mechanism and a clamping mechanism are arranged on the out wall of the first pump body 1 and the second pump body 2, and the first pump body 1 and the second pump body 2 form a main pump body.

The split-type vane pump capable of assisting in operation of motors provided by the invention can transport liquid, compared with ordinary vane pumps, the vane pump provided by the invention has advantages such as, capability to replace the inside vanes, capability to facilitate the daily disassembly and maintenance to the vane pump, capability to protect the inside and to avoid excessive inside pressure, so as to solve the problems in the used existing vane pump, such as inconvenience for replacement to the inside vanes of the vane pump, a lot of tedious time required for disassembly and assembly during daily maintenance, influence on the normal use efficiency of the vane pump, in addition, incapability to protect the vane pump’s inside during using it, and excessive inside pressure to cause damage to its parts.

In a possible embodiment, the transmission mechanism includes a rotary shaft 21, an oil outlet 22, an oil inlet 23, a installing block 24, a pump vane 25, a clamping block 26, a sliding groove 27 and a sealing strip 28, the rotary shaft 21 passes through the second pump body 2 and is connected with the second pump body 2 and the first pump body 1, the oil outlet 22 and the oil inlets 23 are both connected with the main pump body, the sliding groove 27 is arranged in the second pump body 2, the installing block 24 is located in the sliding groove 27 and connected with the second pump body 2 and the first pump body 1, the clamping block 26 is connected with the pump vane 25, and the clamping block 26 is connected with the installing block 24, the sealing strip is connected with the first pump body 1 and the second pump body 2.

Facilitate the transmission of liquid in the pump body by setting the transmission mechanism, and the replacement to the inside vanes, thus has capability to transport inside liquid according to different vanes thereby ensuring the stable use of the vane pump, and further prevent the reversal of the motor 4 from causing back-flow of the inside liquid thereby ensuring the stable transmission of liquid under the action of the vane pump.

In a possible embodiment, a rotary shaft 21 can rotate relative to the first pump body 1 and the second pump body 2.

BL-5521 LU502355 In a possible embodiment, an installing block 24 has a position-limiting groove, pump vanes 25 are located in the position-limiting groove and touch the installing block 24, and the pump vanes 25 can move relative to the installing block 24, both the first pump body 1 and second pump body 2 are provided with an installing groove, and a sealing strip 28 1s located in the installing groove and touches the first pump body 1 and the second pump body 2.

A clamping block 26 can be easily fixed by arranging the position-limiting groove, so that the vane pump can be replaced and clamped, which facilitates replacement to the inside pump vane 25.

In a possible embodiment, the shape of the pump vane 25 1s quadrilateral.

Setting the shape of the pump vane 25 to be quadrangle facilitates transmission of liquid, and when the motor 4 does not rotate, the liquid is in a non-flowing state.

In a possible embodiment, the protection mechanism includes an oil inlet pipe 31, a safety valve 32, a switch valve 33, and an oil outlet pipe 34, the oil inlet pipe 31 is connected with the oil inlet 23, the safety valve 32 1s connected with the oil inlet pipe 31, the switch valve 33 is connected with the safety valve 32, and the oil outlet pipe 34 1s connected with the oil outlet 22.

In a possible embodiment, the oil inlet pipe 31 leads to the oil inlet 23, the oil outlet pipe 34 leads to the oil outlet 22, the oil inlet pipe 31, safety valve 32 and switch valve 33 are arranged leading to the oil outlet pipe 34, and the safety valve 32 can adjust the safety pressure.

An oil inlet pipe 31 can be connected with an oil outlet pipe 34 by arranging a safety valve 32, when the inside pressure exceeds a preset value, which facilitates release of pressure so as to protect the pump body.

In a possible embodiment, the clamping mechanism includes a first fixing plate 41, a second fixing plate 42, a position-limiting rod 43, a connecting frame 44 and a position-limiting block 45, the first fixing plate 41 is connected with the first pump body 1,

BL-5521 LU502355 the second fixing plate 42 is connected with the second pump body 2, the position-limiting rod 43 is connected with the first fixing plate 41 and the second fixing plate 42, the connecting frame 44 is connected with the position-limiting block 45, and the position-limiting block 45 is connected with the position-limiting rod 43.

Facilitate fixation of the first pump body 1 with the second pump body 2 by setting the clamping mechanism, thus has capability to quickly disassemble and assemble the first pump body 1 and the second pump body 2 so as to facilitate daily maintenance to the pump vane 25 and replacement to the inside vanes, and clamp the seal between the first pump body 1 and the second pump body 2 so as to further ensure the normal operation of the vane pump.

In a possible embodiment, a position-limiting rod 43 is provided with a clamping groove, a position-limiting block 45 is clamped with the clamping groove, and the position-limiting rod 43 can move relative to a first fixing plate 41 and a second fixing plate 42.

The first fixing plate 41 and the second fixing plate 42 can be restricted by arranging the position-limiting rod 43, which ensures the connection between the first pump body 1 and the second pump body 2, further the stability during transmission of liquid.

A power mechanism includes a rotor 51, a plunger 52 and a connecting plate 53. The rotor 51 is located in the motor 4 and connected with the rotary shaft 21, and the plunger 52 is located in the rotor 51. In addition, the plunger 52 can move relative to the rotor 51, and the connecting plate 53 is connected with the plunger 52.

The power mechanism can facilitate the motor 4 to drive the pump vane 25 while rotating, thereby converting the power of the motor 4 into the power of the pump vane 25. In addition, when the plunger 52 reaches the limit position, the inside liquid can push the rotor 51 to generate electricity, thereby reducing the electricity loss of the motor 4.

Example 2: As shown in FIGs 1-4 and 6-7, the invention provides a split-type vane pump capable of assisting in operation of motors including a first pump body 1, a second pump body 2, an installing plate 3 and a motor 4, wherein the motor 4 is connected with the installing plate 3, the first pump body 1 is connected with the second pump body 2, a transmission mechanism is arranged between the first pump body 1 and the second pump body 2, a protection mechanism and a clamping mechanism are arranged on the out wall of the first

BL-5521 LU502355 pump body 1 and the second pump body 2, and the first pump body 1 and the second pump body 2 form a main pump body.

The split-type vane pump capable of assisting in operation of motors provided by the invention can transport liquid, compared with ordinary vane pumps, the vane pump provided by the invention has advantages such as, capability to replace the inside vanes, capability to facilitate the daily disassembly and maintenance to the vane pump, capability to protect the inside and to avoid excessive inside pressure, and use the power of oil for generating electricity, so as to solve the problems in the used existing vane pump, such as inconvenience for replacement to the inside vanes of the vane pump, a lot of tedious time required for disassembly and assembly during daily maintenance, influence on the normal use efficiency of the vane pump, in addition, incapability to protect the vane pump’s inside during using it, and excessive inside pressure to cause damage to its parts.

In a possible embodiment, the transmission mechanism includes a rotary shaft 21, an oil outlet 22, an oil inlet 23, a installing block 24, a pump vane 25, a clamping block 26, a sliding groove 27 and a sealing strip 28, the rotary shaft 21 passes through the second pump body 2 and is connected with the second pump body 2 and the first pump body 1, the oil outlet 22 and the oil inlets 23 are both connected with the main pump body, the sliding groove 27 is arranged in the second pump body 2, the installing block 24 is located in the sliding groove 27 and connected with the second pump body 2 and the first pump body 1, the clamping block 26 is connected with the pump vane 25, and the clamping block 26 is connected with the installing block 24, the sealing strip is connected with the first pump body 1 and the second pump body 2. Facilitate the transmission of liquid in the pump body by setting the transmission mechanism, and the replacement to the inside vanes, thus has capability to transport inside liquid according to different vanes thereby ensuring the stable use of the vane pump, and further prevent the reversal of the motor 4 from causing back-flow of the inside liquid thereby ensuring the stable transmission of liquid under the action of the vane pump.

In a possible embodiment, a rotary shaft 21 can rotate relative to the first pump body 1 and the second pump body 2. In a possible embodiment, an installing block 24 has a position-limiting groove, pump vanes 25 are located in the position-limiting groove and touch the installing block 24, and the pump vanes 25 can move relative to the installing block 24, both the first pump body 1

BL-5521 LU502355 and second pump body 2 are provided with an installing groove, and a sealing strip 28 1s located in the installing groove and touches the first pump body 1 and the second pump body 2. A clamping block 26 can be easily fixed by arranging the position-limiting groove, so that the vane pump can be replaced and clamped, which facilitates replacement to the inside pump vane 25.

In a possible embodiment, the shape of the pump vane 25 is triangular.

Setting the shape of the pump vane 25 to be triangular enables the liquid to flow at all times, and the flow of liquid can be accelerated during the startup of the motor 4, thereby ensuring the rapid flow of liquid.

In a possible embodiment, the clamping mechanism includes a first fixing plate 41, a second fixing plate 42, a position-limiting rod 43, a connecting frame 44 and a position-limiting block 45, the first fixing plate 41 is connected with the first pump body 1, the second fixing plate 42 is connected with the second pump body 2, the position-limiting rod 43 is connected with the first fixing plate 41 and the second fixing plate 42, the

BL-5521 LU502355 connecting frame 44 is connected with the position-limiting block 45, and the position-limiting block 45 is connected with the position-limiting rod 43. Facilitate fixation of the first pump body 1 with the second pump body 2 by setting the clamping mechanism, thus has capability to quickly disassemble and assemble the first pump body 1 and the second pump body 2 so as to facilitate daily maintenance to the pump vane 25 and replacement to the inside vanes, and clamp the seal between the first pump body 1 and the second pump body 2 so as to further ensure the normal operation of the vane pump.

In a possible embodiment, a position-limiting rod 43 is provided with a clamping groove, a position-limiting block 45 is clamped with the clamping groove, and the position-limiting rod 43 can move relative to a first fixing plate 41 and a second fixing plate 42. The first fixing plate 41 and the second fixing plate 42 can be restricted by arranging the position-limiting rod 43, which ensures the connection between the first pump body 1 and the second pump body 2, further the stability during transmission of liquid.

A power mechanism includes a rotor 51, a plunger 52 and a connecting plate 53. The rotor 51 is located in the motor 4 and connected with the rotary shaft 21, and the plunger 52 is located in the rotor 51. In addition, the plunger 52 can move relative to the rotor 51, and the connecting plate 53 1s connected with the plunger 52. The power mechanism can facilitate the motor 4 to drive the pump vane 25 while rotating, thereby converting the power of the motor 4 into the power of the pump vane 25. In addition, when the plunger 52 reaches the limit position, the inside liquid can push the rotor 51 to generate electricity, thereby reducing the electricity loss of the motor 4. In addition, the invention also provides a working principle of a split-type vane pump capable of assisting in operation of motors.

When using the pump, the motor 4 rotates driving the rotary shaft 21 to rotate, the rotary shaft 21 rotates driving the rotor 51 to rotate, and the rotor 51 drives the plunger 52 to rotate.

While the motor 4 is rotating, it drives the pump vane 25 to rotate so as to draw liquid into the motor 4. The liquid enters the motor 4 and pushes the plunger 52 to move.

When the plunger 52 moves to the limit position, oil pushes the pump vane 25 to rotate, which can assist in driving the rotor 51 to rotate and generate electricity, thereby saving the power consumed by the motor 4. While the motor 4 is rotating, the pump vane 25 is driven to rotate to transport the liquid, thereby transporting

BL-5521 LU502355 the liquid from the oil inlet 23 to the oil outlet 22. While using the vane pump, the liquid will enter the safety valve 32 through the oil inlet pipe 31, due to the preset pressure of the safety valve 32, when the inside liquid exceeds the preset pressure, the liquid will flow from the oil outlet pipe 34 to the oil outlet 22 after the switch valve 33 is arranged. When disassembling, we clamp the first pump body 1 and the second pump body 2, and separate the first pump body 1 and the second pump body 2 after pulling out the position-limiting block 45, so that we can easily replacement and maintain the inside pump vane 25. Although the embodiments of the invention have been shown and described, for a person skilled in the art, it will be understood that various changes, amendments, alternatives and modifications can be made to these embodiments without departing from the principle and essence of the invention, the scope of the invention is defined by the appended claims and their equivalents.

It should be noted that the embodiments of the invention and the features in the embodiments can be combined with each other if there is no conflict.

The technical solution in the embodiments of the invention will be clearly and completely described below in combination with the figures in the embodiments of the invention. Obviously, the described embodiment is only a part of the embodiments of the invention, rather than all the embodiments. The following description actually only illustrative to at least one exemplary embodiment, never serves as any limitation on the invention and its application or use. Based on the embodiments of the invention, all other embodiments obtained by a person skilled in the art without creative work shall fall within the protection scope of the invention.

Claims

BL-5521 LU502355 CLAIMS

1.A split-type vane pump capable of assisting in operation of motors comprising a first pump body (1), a second pump body (2), an installing plate (3) and a motor (4), wherein said motor (4) is connected with said installing plate (3), said first pump body (1) is connected with said second pump body (2), a transmission mechanism and a power mechanism are arranged between said first pump body (1) and said second pump body (2), a protection mechanism and a clamping mechanism are arranged on the out wall of said first pump body (1) and said second pump body (2), and said first pump body (1) and said second pump body (2) form a main pump body.

2.The split-type vane pump capable of assisting in operation of motors according to claim1, wherein said transmission mechanism includes a rotary shaft (21), an oil outlet (22), an oil inlet (23), a installing block (24), a pump vane (25), a clamping block (26), a sliding groove (27) and a sealing strip (28), said rotary shaft (21) passes through said second pump body (2) and is connected with said second pump body (2) and said first pump body (1), said oil outlet (22) and said oil inlets (23) are both connected with said main pump body, said sliding groove (27) is arranged in said second pump body (2), said installing block (24) is located in said sliding groove (27) and connected with said second pump body (2) and said first pump body (1), said clamping block (26) is connected with said pump vane (25), and said clamping block (26) is connected with said installing block (24), said sealing strip is connected with said first pump body (1) and said second pump body (2).

3.The split-type vane pump capable of assisting in operation of motors according to claim 2, wherein said rotary shaft (21) can rotate relative to said first pump body (1) and said second pump body (2).

4 The split-type vane pump capable of assisting in operation of motors according to claim 2, wherein said installing block (24) has a position-limiting groove, said pump vane (25) is located in said position-limiting groove and touches said installing block (24), and said pump vane (25) can move relative to said installing block (24), said first pump body (1) and said second pump body (2) are both provided with a installing groove, said sealing strip (28) is located in said installing groove and touches the first pump body and said second pump body (2).

BL-5521 LU502355

5.The split-type vane pump capable of assisting in operation of motors according to claim 2, wherein the shape of said pump vane (25) is quadrilateral or triangular.

6.The split-type vane pump capable of assisting in operation of motors according to claim 2, wherein said protection mechanism includes an oil inlet pipe (31), a safety valve (32), a switch valve (33), and an oil outlet pipe (34), said oil inlet pipe (31) is connected with said oil inlet (23), said safety valve (32) is connected with said oil inlet pipe (31), said switch valve (33) is connected with said safety valve (32), and said oil outlet pipe (34) is connected with said oil outlet (22).

7. The split-type vane pump capable of assisting in operation of motors according to claim 6, wherein said oil inlet pipe (31) leads to said oil inlet (23), said oil outlet pipe (34) leads to said oil outlet (22), said oil inlet pipe (31), safety valve (32) and switch valve (33) are arranged leading to said oil outlet pipe (34), and said safety valve (32) can adjust the safety pressure.

8.The split-type vane pump capable of assisting in operation of motors according to claim 1, wherein said clamping mechanism includes a first fixing plate (41), a second fixing plate (42), a position-limiting rod (43), a connecting frame (44) and a position-limiting block (45), said first fixing plate (41) is connected with said first pump body (1), said second fixing plate (42) is connected with said second pump body (2), said position-limiting rod (43) is connected with said first fixing plate (41) and said second fixing plate (42), said connecting frame (44) is connected with said position-limiting block (45), and said position-limiting block (45) is connected with said position-limiting rod (43).

9.The split-type vane pump capable of assisting in operation of motors according to claim 8, wherein said position-limiting rod (43) is provided with a clamping groove, said position-limiting block (45) is clamped with said clamping groove, and said position-limiting rod (43) can move relative to said first fixing plate (41) and said second fixing plate (42).

10.The split-type vane pump capable of assisting in operation of motors according to claim 2, wherein said power mechanism includes a rotor (51), a plunger (52) and a

BL-5521 LU502355 connecting plate (53), said rotor (51) is located in said motor (4) and connected with said rotary shaft (21), and said plunger (52) is located in said rotor (51), in addition, said plunger (52) can move relative to said rotor (51), and said connecting plate (53) is connected with said plunger (52).