Rotor pump with pressure relief protection function

Abstract

The invention discloses a rotor pump with a pressure relief protection function, and relates to the technical field of rotor pumps. The rotor pump comprises a rotor pump body, an oil inlet pipe and an oil outlet pipe are fixedly installed at the oil inlet end and the oil outlet end of the rotor pump body correspondingly, assembling pipes are fixedly installed at the ends, away from each other, of the oil inlet pipe and the oil outlet pipe correspondingly, steering pipes are rotationally installed at one ends of the assembling pipes correspondingly, and external connecting pipes are rotationally installed at one ends of the steering pipes correspondingly; and pipeline supports are fixedly mounted at the bottoms of the external connection pipes correspondingly, and pressure sensors are fixedly mounted at the tops of the pipeline supports correspondingly. By arranging the control motor, when the pressure sensing film senses the pressure of oil conveyed in the external connecting pipe, the area with the largest oil can be distinguished, then the electromagnetic pressure release valve is driven by the control motor to rotate to the position corresponding to the area with the largest oil pressure, and the electromagnetic pressure release valve can conduct targeted pressure release on the oil; and the timeliness and effectiveness of pressure relief are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of rotor pumps, and in particular to a rotor pump with a pressure relief protection function. Background Art

[0002] The rotor pump is also called a three-blade pump. The rotor pump achieves the purpose of conveying fluids by means of the periodic transformation of multiple fixed-volume conveying units in the working chamber. It can be used to convey oil. The oil inlet and outlet of the rotor pump are connected to the inner cavity of the pump body. During the oil delivery process, the oil inlet and outlet of the rotor pump may face different pressure conditions. An instantaneous oil stop at the oil inlet will not cause too much pressure. However, if the upstream cannot obtain partial pressure or the partial pressure is interrupted, the pressure at the oil inlet end of the rotor pump will gradually increase. The existing rotor pump pressure increase mainly acts on the core equipment and connecting pipes in the pump.

[0003] Existing rotor pumps generally achieve the purpose of pressure relief by diverting the transported fluid through the provision of a pressure relief pipe. However, due to the fixed position of the pressure relief pipe, it is usually impossible to carry out targeted pressure relief in the area with the highest pressure in the pipe, and it is impossible to automatically adjust the pressure relief flow according to the pressure, resulting in the pressure relief effect not reaching an ideal state. For this reason, a rotor pump with a pressure relief protection function is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that due to the fixed position of the pressure relief pipe, it is usually impossible to carry out targeted pressure relief in the area with the highest pressure in the pipe, and the pressure relief flow cannot be automatically adjusted according to the pressure, resulting in the pressure relief effect not reaching an ideal state. The present invention provides a rotor pump with a pressure relief protection function.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A rotor pump with a pressure relief protection function comprises a rotor pump body, wherein an oil inlet pipe and an oil outlet pipe are fixedly installed at the oil inlet end and the oil outlet end of the rotor pump body respectively, an assembly pipe is fixedly installed at one end of the oil inlet pipe and the oil outlet pipe which are away from each other, a steering pipe is rotatably installed at one end of the assembly pipe, an external pipe is rotatably installed at one end of the steering pipe, a pipe bracket is fixedly installed at the bottom of the external pipe, a pressure sensor is fixedly installed at the top of the pipe bracket, a pressure sensing membrane is fixedly installed on the inner wall of the external pipe, an electromagnetic pressure relief valve and an emergency pressure relief pipe which are connected to the inside of the steering pipe are fixedly installed on the side wall of the steering pipe, a steering gear ring is fixedly sleeved on the steering pipe, a control motor is fixedly installed at the bottom of the assembly pipe, a control gear meshed with the steering gear ring is fixedly sleeved on the output shaft of the control motor, and an emergency pressure relief assembly for emergency pressure relief when the pressure relief performance of the electromagnetic pressure relief valve is insufficient is arranged inside the emergency pressure relief pipe.

[0007] Furthermore, the emergency pressure relief assembly includes a honeycomb pressure relief pipe fixedly installed inside the emergency pressure relief pipe, the honeycomb pressure relief pipe is provided with a plurality of evenly distributed pressure relief holes, a retaining frame is fixedly installed inside the end of the emergency pressure relief pipe away from the steering pipe, a plurality of evenly distributed return spring rods are fixedly installed on the side of the retaining frame facing the honeycomb pressure relief pipe, and sealing plug covers are fixedly installed on the telescopic ends of the return spring rods, and the plurality of sealing plug covers are respectively matched with the plurality of pressure relief holes.

[0008] Furthermore, pressure relief boxes are provided on both sides of the rotor pump body, the steering tube, the electromagnetic pressure relief valve and the emergency pressure relief pipe located on the same side are all located inside the pressure relief box, and clearance holes are opened on both sides of the pressure relief box. The assembly tube and the external tube respectively pass through the two clearance holes and extend to the outside of the pressure relief box, and box brackets are fixedly installed on both sides of the pressure relief box.

[0009] Furthermore, an expansion box is slidably sleeved on the bottom of the pressure relief box, and the expansion box is connected to the interior of the pressure relief box. A vertically arranged expansion hydraulic rod is fixedly installed on one side of the pressure relief box, and the expansion hydraulic rod faces downward and is fixedly connected to the expansion box. A return pipe connected to the interior of the expansion box is fixedly installed on one side of the expansion box.

[0010] Furthermore, a pipeline shock-absorbing base is fixedly installed at the bottom of the pipeline support, a pipeline hanging rack is fixedly installed at the bottom of the pipeline shock-absorbing base, and the pipeline hanging rack is fixedly installed inside the pressure relief box.

[0011] Furthermore, the assembly tube and the external tube are both provided with rubber shock-absorbing rings, and the rubber shock-absorbing rings located on the same side are fixedly installed inside the clearance hole.

[0012] Furthermore, a gear sealing sleeve is rotatably sleeved on the steering tube, the steering gear ring and the control motor are both located inside the gear sealing sleeve, a motor sealing sleeve is fixedly mounted on one side of the gear sealing sleeve, the control motor is located inside the motor sealing sleeve, and a plurality of positioning brackets are fixedly mounted on the circumferential side of the assembly tube, and one end of the positioning brackets is fixedly mounted on the side wall of the gear sealing sleeve.

[0013] Furthermore, a pump body shock absorbing bracket is fixedly installed on the bottom of the rotor pump body.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention sets an electromagnetic pressure relief valve so that when the pressure sensing membrane detects that the oil pressure at the oil inlet or oil outlet is too high during oil delivery, the electromagnetic pressure relief valve will open, so that the electromagnetic pressure relief valve will divert the oil being delivered, so that part of the oil will be leaked from the electromagnetic pressure relief valve, thereby reducing the oil pressure in the steering pipe, playing a role of pressure relief, and ensuring that the oil inlet end of the rotor pump body will not have excessive oil pressure to affect the normal operation of the internal components of the rotor pump body;

[0016] 2. The present invention sets a control motor so that when the pressure sensing membrane senses the oil pressure transported in the external pipe, it can identify the area with the largest oil pressure, and then drive the electromagnetic pressure relief valve to rotate to the position corresponding to the area with the largest oil pressure through the control motor, so that the electromagnetic pressure relief valve can perform targeted pressure relief on the oil, thereby ensuring the timeliness and effectiveness of the pressure relief;

[0017] 3. The present invention sets an emergency pressure relief assembly so that when the oil pressure is too high and the electromagnetic pressure relief valve is difficult to effectively relieve pressure, the gradually pressurized oil will exert pressure on the sealing plug cover inside the emergency pressure relief pipe, thereby pushing the sealing plug cover away from each pressure relief hole, compressing the reset spring rod and connecting the pressure relief holes, so that the emergency pressure relief pipe can perform emergency diversion of the oil, thereby increasing the pressure relief intensity and speed, and as the oil pressure increases, the sealing plug cover opened on one side of the honeycomb pressure relief pipe will also gradually increase, realizing automatic emergency pressure relief and automatic increase in diversion flow rate;

[0018] 4. The present invention provides a pressure relief box, so that when the electromagnetic pressure relief valve and the emergency pressure relief pipe relieve pressure on the rotor pump body, the diverted oil will flow into the two pressure relief boxes through the electromagnetic pressure relief valve and the emergency pressure relief pipe respectively, so as to realize automatic recovery of the oil. Moreover, the provision of the pressure relief box makes it unnecessary to connect one end of the electromagnetic pressure relief valve and the emergency pressure relief pipe to other oil pipelines, thereby facilitating the steering of the steering tube and preventing the external oil pipeline from hindering the rotation of the steering tube.

[0019] 5. The present invention sets an expansion box so that when the oil pressure at the oil inlet or outlet is too high, the diversion volume of the electromagnetic pressure relief valve and the emergency pressure relief pipe will also increase, and the diverted oil will be recovered to other pipelines through the return pipe on one side of the bottom of the expansion box. When the diversion of the oil is too large, resulting in the return pipe being unable to discharge the diverted oil in time, the expansion hydraulic rod will drive the expansion box to slide downward along the pressure relief box, thereby expanding the pressure relief box and the expansion box, increasing the temporary storage volume of the oil, and preventing the excessive diversion of the oil from causing a sharp increase in the oil pressure inside the pressure relief box and the box bracket;

[0020] 6. The present invention provides a pipeline shock-absorbing base, so that the external pipes at both ends of the rotor pump body are fixed to the pipe hanging frame through the pipe bracket and the pipeline shock-absorbing base, and then hung inside the two pressure relief boxes through the pipe hanging frame. When the rotor pump body is conveying oil, the pipeline shock-absorbing base at the bottom of the pipe bracket can reduce the vibration of the assembly pipe, steering pipe, external pipe and other pipes caused by conveying oil, thereby ensuring the stability of oil conveying and preventing the abnormal increase of oil pressure due to severe vibration;

[0021] 7. The present invention provides a rubber damping ring so that the assembly pipes and the external pipes at both ends of the rotor pump body are fixed in the clearance holes on the pressure relief box through the rubber damping rings. The rubber damping rings can, on the one hand, buffer the vibration of the assembly pipe and the external pipe when the oil is transported on the entire pipeline, thereby reducing the impact of the oil transport vibration on the pressure relief box. On the other hand, the rubber damping rings can increase the sealing between the clearance holes and the assembly pipe and the external pipe, thereby preventing the oil inside the pressure relief box from overflowing.

[0022] 8. The present invention provides a gear sealing sleeve and a motor sealing sleeve so that the positioning bracket can play a sealing role to prevent the oil or other fluids temporarily stored in the pressure relief box from directly contacting the steering gear ring and the control gear, thereby affecting the precision of the meshing transmission of the steering gear ring and the control gear. The motor sealing sleeve can protect the control motor to prevent high-temperature fluids such as oil from directly contacting the control motor and affecting the normal operation of the control motor. The motor sealing sleeve can cooperate with an external cooling circulation pipeline to cool and insulate the control motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0024] Figure 2 is a schematic diagram of a three-dimensional structure from a second viewing angle of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the rotor pump body and the external pipe of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the assembly pipe and the external pipe of the present invention;

[0027] Figure 5 This is a schematic diagram of the internal three-dimensional structure of the external tube of the present invention;

[0028] Figure 6 It is a schematic diagram of the internal three-dimensional structure of the gear sealing sleeve and the motor sealing sleeve of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the interior of the emergency pressure relief pipe of the present invention from a first-person perspective;

[0030] Figure 8is a schematic diagram of the third-dimensional structure of the interior of the emergency pressure relief pipe of the present invention from a second viewing angle;

[0031] 1. The oil pump body is provided with a plurality of pressure relief valves, and a plurality of pressure relief valves are provided. The plurality of pressure relief valves are provided with a plurality of pressure relief valves, and a plurality of pressure relief valves are provided. The plurality of pressure relief valves are provided with a plurality of pressure relief valves, and a plurality of pressure relief valves are provided. The plurality of pressure relief valves are provided with a plurality of pressure relief valves, and a plurality of pressure relief valves are provided. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] like Figures 1 to 8As shown, a rotor pump with pressure relief protection function includes a rotor pump body 1, as shown in Figure 3 As shown, the oil inlet end and the oil outlet end of the rotor pump body 1 are respectively fixedly installed with an oil inlet pipe 2 and an oil outlet pipe 3, and the ends of the oil inlet pipe 2 and the oil outlet pipe 3 that are away from each other are fixedly installed with an assembly pipe 4, as shown in FIG. Figure 4 As shown, a steering tube 5 is rotatably mounted on one end of the assembly tube 4, an external tube 6 is rotatably mounted on one end of the steering tube 5, a pipe bracket 7 is fixedly mounted on the bottom of the external tube 6, and a pressure sensor 8 is fixedly mounted on the top of the pipe bracket 7, as shown in FIG. Figure 5 As shown, a pressure sensing membrane 9 is fixedly mounted on the inner wall of the external pipe 6. In this embodiment, the pressure sensing membrane 9 is electrically connected to the pressure sensor 8. Figure 4 As shown, an electromagnetic pressure relief valve 13 and an emergency pressure relief pipe 14 connected to the interior of the steering tube 5 are fixedly installed on the side wall of the steering tube 5. Figure 6 As shown, a steering gear ring 10 is fixedly sleeved on the steering tube 5, a control motor 11 is fixedly installed at the bottom of the assembly tube 4, and an output shaft of the control motor 11 is fixedly sleeved with a control gear 12 meshing with the steering gear ring 10. In this embodiment, the control motor 11 adopts a servo motor, and an emergency pressure relief component for emergency pressure relief when the pressure relief performance of the electromagnetic pressure relief valve 13 is insufficient is arranged inside the emergency pressure relief pipe 14; specifically, when the rotor pump with pressure relief protection function is in use, the outer The oil delivery pipeline of the rotor pump body 1 is connected to the two external pipes 6 respectively, and the rotor pump body 1 is started to deliver oil. The oil is pumped into the steering pipe 5 through one of the external pipes 6, and then delivered to the rotor pump body 1 through the steering pipe 5, the assembly pipe 4 and the oil inlet pipe 2, and finally delivered to the oil delivery pipeline through the oil outlet pipe 3, the assembly pipe 4, the steering pipe 5 and the external pipe 6 on the other side to realize the delivery of oil. By setting the electromagnetic pressure relief valve 13, when the oil is delivered, the oil will be respectively discharged at the external pipes at the oil inlet end and the oil outlet end. The oil is transported inside the external pipe 6, and the pressure sensing membrane 9 monitors the oil pressure transported at both ends. When the oil pressure at the oil inlet end or the oil outlet end is too high, the electromagnetic pressure relief valve 13 will be opened, so that the electromagnetic pressure relief valve 13 will divert the oil being transported, so that part of the oil is leaked from the electromagnetic pressure relief valve 13, thereby reducing the oil pressure in the steering pipe 5, playing a role of pressure relief, and ensuring that the oil inlet end of the rotor pump body 1 will not have excessive oil pressure and affect the normal operation of the internal components of the rotor pump body 1. By setting the control motor 11, when the pressure sensing membrane 9 senses the oil pressure transported in the external pipe 6, it will sense the difference in oil pressure at various places, thereby identifying the area with the largest oil, and then the control motor 11 drives the control gear 12 to rotate, and then drives the steering pipe 5 to rotate between the assembly pipe 4 and the external pipe 6 through the steering gear ring 10, thereby driving the electromagnetic pressure relief valve 13 to rotate to the position corresponding to the area with the maximum oil pressure, so that the electromagnetic pressure relief valve 13 can perform targeted pressure relief on the oil, ensuring the timeliness and effectiveness of the pressure relief.

[0037] like Figure 7 As shown, the emergency pressure relief assembly includes a honeycomb pressure relief pipe 15 fixedly installed inside the emergency pressure relief pipe 14, and a plurality of evenly distributed pressure relief holes 1501 are opened inside the honeycomb pressure relief pipe 15, such as Figure 8 As shown, a retaining frame 16 is fixedly installed inside the end of the emergency pressure relief pipe 14 away from the steering pipe 5, and a plurality of evenly distributed return spring rods 17 are fixedly installed on the side of the retaining frame 16 facing the honeycomb pressure relief pipe 15, and a sealing plug cover 18 is fixedly installed on the telescopic end of the return spring rod 17, and the plurality of sealing plug covers 18 are respectively adapted to the plurality of pressure relief holes 1501; specifically, by setting an emergency pressure relief component, when the oil pressure at the oil inlet end or the oil outlet end of the rotor pump body 1 is too large, and the electromagnetic pressure relief valve 13 is difficult to effectively reduce the oil pressure by oil diversion When the oil is under pressure, the gradually pressurized oil inside the external pipe 6 will exert pressure on the sealing plug cover 18 inside the emergency pressure relief pipe 14, thereby pushing the sealing plug cover 18 out of the pressure relief holes 1501, compressing the return spring rod 17 and connecting the pressure relief holes 1501, so that the emergency pressure relief pipe 14 can urgently divert the oil, thereby increasing the pressure relief intensity and speed, and as the oil pressure increases, the sealing plug cover 18 opened on one side of the honeycomb pressure relief pipe 15 will also gradually increase, realizing automatic emergency pressure relief and automatic increase in diversion flow.

[0038] like Figure 1 As shown, pressure relief boxes 19 are provided on both sides of the rotor pump body 1, and the steering tube 5, the electromagnetic pressure relief valve 13 and the emergency pressure relief pipe 14 located on the same side are all located inside the pressure relief box 19, and clearance holes are opened on both sides of the pressure relief box 19. The assembly pipe 4 and the external pipe 6 respectively pass through the two clearance holes and extend to the outside of the pressure relief box 19, and box brackets 20 are fixedly installed on both sides of the pressure relief box 19; specifically, by setting the pressure relief box 19, when the electromagnetic pressure relief valve 13 and the emergency pressure relief pipe 14 relieve pressure on the rotor pump body 1, the diverted oil will flow into the two pressure relief boxes 19 through the electromagnetic pressure relief valve 13 and the emergency pressure relief pipe 14 respectively, so as to realize automatic recovery of the oil, and the setting of the pressure relief box 19 makes it unnecessary to connect one end of the electromagnetic pressure relief valve 13 and the emergency pressure relief pipe 14 to other oil pipelines, thereby facilitating the steering of the steering tube 5 and preventing the external oil pipeline from hindering the rotation of the steering tube 5.

[0039] like Figure 1As shown, the bottom of the pressure relief box 19 is slidably sleeved with an expansion box 21, the expansion box 21 is connected to the inside of the pressure relief box 19, and a vertical expansion hydraulic rod 22 is fixedly installed on one side of the pressure relief box 19, the expansion hydraulic rod 22 faces downward and is fixedly connected to the expansion box 21, and a return pipe 23 connected to the inside of the expansion box 21 is fixedly installed on one side of the expansion box 21; specifically, by setting the expansion box 21, when the oil pressure at the oil inlet end or the oil outlet end is too large, the electromagnetic pressure relief valve 13 and the emergency The diversion volume of the pressure relief pipe 14 will also increase, and the diverted oil will be recovered to other pipelines through the return pipe 23 on the bottom side of the expansion box 21. When the diversion of the oil is too large, causing the return pipe 23 to be unable to discharge the diverted oil in time, the expansion hydraulic rod 22 will drive the expansion box 21 to slide downward along the pressure relief box 19, thereby expanding the pressure relief box 19 and the expansion box 21, increasing the temporary storage volume of the oil, and preventing excessive diversion of the oil from causing a sharp increase in the oil pressure inside the pressure relief box 19 and the box bracket 20.

[0040] like Figure 3 As shown, a pipe shock-absorbing base 24 is fixedly installed at the bottom of the pipe support 7. In the present embodiment, the pipe shock-absorbing base 24 is made of elastic materials such as elastic rubber. A pipe hanging frame 25 is fixedly installed at the bottom of the pipe shock-absorbing base 24. The pipe hanging frame 25 is fixedly installed inside the pressure relief box 19. Specifically, by setting the pipe shock-absorbing base 24, the external pipes 6 at both ends of the rotor pump body 1 are fixed to the pipe hanging frame 25 through the pipe support 7 and the pipe shock-absorbing base 24, and then hung inside the two pressure relief boxes 19 through the pipe hanging frame 25. When the rotor pump body 1 is conveying oil, the pipe shock-absorbing base 24 at the bottom of the pipe support 7 will cause vibration of the assembly pipe 4, the steering pipe 5, the external pipe 6 and other pipes due to conveying oil, thereby ensuring the stability of oil conveying and preventing the abnormal increase of oil pressure due to severe vibration.

[0041] like Figure 1 As shown, both the assembly tube 4 and the external tube 6 are provided with rubber damping rings 26, and the rubber damping rings 26 on the same side are fixedly installed inside the clearance hole. In the present embodiment, the rubber damping ring 26 is a folding sealing ring made of elastic rubber, and part of the rubber damping ring 26 is fixedly installed between the clearance hole and the assembly tube 4 or the external tube 6, and the other part of the rubber damping ring 26 is fixedly installed on the outer wall of the pressure relief box 19 to cover the clearance hole. Specifically, by arranging the rubber damping ring 26, the assembly tube 4 and the external tube 6 at both ends of the rotor pump body 1 are fixed in the clearance hole on the pressure relief box 19 through the rubber damping ring 26, so that the rubber damping ring 26 can, on the one hand, buffer the vibration of the assembly tube 4 and the external tube 6 during the transportation of oil, thereby reducing the influence of the oil transportation vibration on the pressure relief box 19, and on the other hand, can increase the sealing between the clearance hole and the assembly tube 4 and the external tube 6 to prevent the oil inside the pressure relief box 19 from overflowing.

[0042] like Figure 6 As shown, a gear sealing sleeve 27 is rotatably sleeved on the steering tube 5, the steering gear ring 10 and the control gear 12 are both located inside the gear sealing sleeve 27, a motor sealing sleeve 28 is fixedly installed on one side of the gear sealing sleeve 27, and the control motor 11 is located inside the motor sealing sleeve 28, and a plurality of positioning brackets 29 are fixedly installed on the circumferential side of the assembly tube 4, and one end of the positioning brackets 29 is fixedly installed on the side wall of the gear sealing sleeve 27. In this embodiment, a cooling circulation pipeline can be set on one side of the pressure relief box 19 and extend to the inside of the pressure relief box 19 to cool down the control motor 11, so as to avoid the rotor pump body 1 transmitting high-temperature liquid and causing the control motor 11 to heat up rapidly, thereby affecting the control motor 11. Precise drive; specifically, by arranging the gear sealing sleeve 27 and the motor sealing sleeve 28, the positioning bracket 29 can protect the steering gear ring 10 and the control gear 12 inside, play a sealing role, and prevent the oil or other fluids temporarily stored in the pressure relief box 19 from directly contacting the steering gear ring 10 and the control gear 12, thereby affecting the precision of the meshing transmission of the steering gear ring 10 and the control gear 12. The motor sealing sleeve 28 can protect the control motor 11 to prevent high-temperature fluids such as oil from directly contacting the control motor 11 and affecting the normal operation of the control motor 11. The motor sealing sleeve 28 can cooperate with the external cooling circulation pipeline to cool and insulate the control motor 11.

[0043] like Figure 2 As shown, a pump body shock-absorbing bracket 30 is fixedly installed at the bottom of the rotor pump body 1. In the present embodiment, the base of the pump body shock-absorbing bracket 30 is made of elastic materials such as elastic rubber. Specifically, by setting the pump body shock-absorbing bracket 30, the pump body shock-absorbing bracket 30 can play a role in buffering and shock-absorbing the rotor pump body 1 itself, thereby preventing the rotor pump body 1 from vibrating too much when conveying oil, thereby affecting the stability of oil conveying, and even causing an abnormal increase in the oil pressure inside the rotor pump body 1.

[0044] In summary: before use: connect the oil pipeline of the external rotor pump body 1 to the two external pipes 6 respectively, and start the rotor pump body 1 to start oil delivery. The oil is pumped into the steering pipe 5 through one of the external pipes 6, and then transported to the rotor pump body 1 through the steering pipe 5, the assembly pipe 4 and the oil inlet pipe 2, and finally transported to the oil pipeline through the oil outlet pipe 3, the assembly pipe 4, the steering pipe 5 and the external pipe 6 on the other side to realize the oil delivery;

[0045] When in use: When transporting oil, the oil will be transported inside the external pipe 6 at the oil inlet and outlet ends respectively, and the pressure sensing membrane 9 will monitor the oil pressure transported at both ends. When the oil pressure at the oil inlet or outlet end is too high, the electromagnetic pressure relief valve 13 will open, so that the electromagnetic pressure relief valve 13 will divert the oil being transported, so that part of the oil will leak out from the electromagnetic pressure relief valve 13, thereby reducing the oil pressure in the steering pipe 5 and playing a role in pressure relief. When the pressure sensing membrane 9 senses the oil pressure transported in the external pipe 6 , it will sense the difference in oil pressure at various locations, thereby identifying the area with the largest oil volume, and then drive the control gear 12 to rotate through the control motor 11, and then drive the steering tube 5 to rotate between the assembly tube 4 and the external tube 6 through the steering gear ring 10, thereby driving the electromagnetic pressure relief valve 13 to rotate to the position corresponding to the area with the largest oil pressure, so that the electromagnetic pressure relief valve 13 can perform targeted pressure relief on the oil, ensuring the timeliness and effectiveness of the pressure relief. When the oil pressure at the oil inlet or outlet end of the rotor pump body 1 is too high, and the electromagnetic pressure relief valve 13 is difficult to When the oil pressure is effectively reduced by oil diversion, the gradually pressurized oil in the external pipe 6 will exert pressure on the sealing plug cover 18 in the emergency pressure relief pipe 14, thereby pushing the sealing plug cover 18 out of each pressure relief hole 1501, compressing the return spring rod 17 and connecting the pressure relief holes 1501, so that the emergency pressure relief pipe 14 can perform emergency diversion of the oil, thereby increasing the pressure relief degree and speed, and as the oil pressure increases, the sealing plug cover 18 opened on one side of the honeycomb pressure relief pipe 15 will also gradually increase, realizing automatic tightening. With the automatic increase of emergency pressure relief and diversion flow, the diverted oil will flow into the two pressure relief tanks 19 through the electromagnetic pressure relief valve 13 and the emergency pressure relief pipe 14 respectively. When the diversion of the oil is too large, resulting in the inability of the return pipe 23 to discharge the diverted oil in time, the expansion hydraulic rod 22 will drive the expansion tank 21 to slide downward along the pressure relief tank 19, thereby expanding the pressure relief tank 19 and the expansion tank 21, increasing the temporary storage capacity of the oil, and preventing the excessive diversion of the oil from causing a sharp increase in the oil pressure inside the pressure relief tank 19 and the box bracket 20.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A rotor pump with pressure relief protection function, characterized in that: The invention comprises a rotor pump body (1), wherein an oil inlet pipe (2) and an oil outlet pipe (3) are fixedly mounted on the oil inlet end and the oil outlet end of the rotor pump body (1), respectively; an assembly pipe (4) is fixedly mounted on the ends of the oil inlet pipe (2) and the oil outlet pipe (3) which are away from each other; a steering pipe (5) is rotatably mounted on one end of the assembly pipe (4); an external pipe (6) is rotatably mounted on one end of the steering pipe (5); a pipe bracket (7) is fixedly mounted on the bottom of the external pipe (6); a pressure sensor (8) is fixedly mounted on the top of the pipe bracket (7); and a pressure sensor (9) is fixedly mounted on the inner wall of the external pipe (6). The steering tube (5) is provided with a film (9), an electromagnetic pressure relief valve (13) and an emergency pressure relief pipe (14) which are connected to the inside of the steering tube (5) are fixedly mounted on the side wall of the steering tube (5), a steering gear ring (10) is fixedly sleeved on the steering tube (5), a control motor (11) is fixedly mounted on the bottom of the assembly tube (4), an output shaft of the control motor (11) is fixedly sleeved with a control gear (12) which meshes with the steering gear ring (10), and an emergency pressure relief component for emergency pressure relief when the pressure relief performance of the electromagnetic pressure relief valve (13) is insufficient is arranged inside the emergency pressure relief pipe (14).

2. A rotor pump with pressure relief protection function according to claim 1, characterized in that: The emergency pressure relief assembly comprises a honeycomb pressure relief pipe (15) fixedly installed inside the emergency pressure relief pipe (14), the honeycomb pressure relief pipe (15) is provided with a plurality of evenly distributed pressure relief holes (1501), a retaining frame (16) is fixedly installed inside one end of the emergency pressure relief pipe (14) away from the steering pipe (5), a plurality of evenly distributed return spring rods (17) are fixedly installed on the side of the retaining frame (16) facing the honeycomb pressure relief pipe (15), a sealing plug cover (18) is fixedly installed at the telescopic end of the return spring rod (17), and the plurality of sealing plug covers (18) are respectively adapted to the plurality of pressure relief holes (1501).

3. A rotor pump with pressure relief protection function according to claim 1, characterized in that: Pressure relief boxes (19) are provided on both sides of the rotor pump body (1); the steering tube (5), the electromagnetic pressure relief valve (13) and the emergency pressure relief pipe (14) located on the same side are all located inside the pressure relief box (19); clearance holes are provided on both sides of the pressure relief box (19); the assembly tube (4) and the external tube (6) respectively penetrate the two clearance holes and extend to the outside of the pressure relief box (19); box brackets (20) are fixedly installed on both sides of the pressure relief box (19).

4. A rotor pump with pressure relief protection function according to claim 3, characterized in that: The bottom of the pressure relief box (19) is slidably sleeved with an expansion box (21), the expansion box (21) is connected to the interior of the pressure relief box (19), one side of the pressure relief box (19) is fixedly mounted with a vertically arranged expansion hydraulic rod (22), the expansion hydraulic rod (22) faces downward and is fixedly connected to the expansion box (21), and one side of the expansion box (21) is fixedly mounted with a return pipe (23) connected to the interior of the expansion box (21).

5. The rotor pump with pressure relief protection function according to claim 3, characterized in that: A pipeline shock-absorbing base (24) is fixedly mounted on the bottom of the pipeline support (7), a pipeline hanging frame (25) is fixedly mounted on the bottom of the pipeline shock-absorbing base (24), and the pipeline hanging frame (25) is fixedly mounted inside the pressure relief box (19).

6. A rotor pump with pressure relief protection function according to claim 3, characterized in that: The assembly tube (4) and the external tube (6) are both provided with rubber shock absorbing rings (26), and the rubber shock absorbing rings (26) located on the same side are fixedly installed inside the clearance hole.

7. The rotor pump with pressure relief protection function according to claim 1, characterized in that: The steering tube (5) is rotatably sleeved with a gear sealing sleeve (27); the steering gear ring (10) and the control gear (12) are both located inside the gear sealing sleeve (27); a motor sealing sleeve (28) is fixedly mounted on one side of the gear sealing sleeve (27); the control motor (11) is located inside the motor sealing sleeve (28); a plurality of positioning brackets (29) are fixedly mounted on the circumference of the assembly tube (4); one end of each positioning bracket (29) is fixedly mounted on the side wall of the gear sealing sleeve (27).

8. The rotor pump with pressure relief protection function according to claim 1, characterized in that: A pump body shock-absorbing bracket (30) is fixedly mounted on the bottom of the rotor pump body (1).

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