A graphite collection device with self-cleaning function for a gear pump

Abstract

The present invention discloses a graphite collection device with self-cleaning function for a gear pump, which relates to the technical field of graphite collection of gear pumps. The collection device is used to collect the graphite powder precipitated during the running-in period of the gear pump. The collection device includes a workbench, a gas supply fan, a driving motor and a collection mechanism. The gas supply fan is fixedly connected to the workbench, and the air outlet of the gas supply fan is communicated with the inlet of the gear pump. The driving motor is fixedly connected to the workbench, and the output end of the driving motor is in transmission connection with the driving shaft of the gear pump. The collection mechanism is fixedly connected to the workbench and is communicated with the outlet of the gear pump. The impact force of the air flow provided by the gas supply fan is used to flush out the graphite powder precipitated during the running-in process from the inner cavity of the gear pump, so as to self-clean the inner cavity of the gear pump. The flushed graphite powder finally flows into the collection mechanism for collection.

Description

Technical Field

[0001] The invention relates to the technical field of graphite collection for gear pumps, in particular to a graphite collection device with a self-cleaning function for gear pumps. Background Art

[0002] The working principle of the gear pump is to change the working volume through the meshing and rotation of the gears, thereby realizing the suction and discharge of liquid. In order to ensure the sealing of the gear pump, corresponding packing is often installed on the gear shaft to prevent liquid leakage.

[0003] Gear pumps generally use graphite as packing seals, but the strength of graphite is relatively low. During the running-in process, the driving shaft of the gear pump will continuously rub against the graphite seal during rotation, thereby continuously precipitating a certain amount of graphite powder. Existing collection devices generally use the same air volume for impact when collecting graphite. However, when the amount of graphite powder precipitation increases, the inner cavity of the gear pump has a certain resistance to the airflow, and the wind force of the airflow will gradually decrease. The smaller wind force cannot completely remove the graphite powder, resulting in the inability to completely remove the precipitated graphite powder. Summary of the Invention

[0004] The object of the present invention is to provide a graphite collecting device with a self-cleaning function for a gear pump, so as to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a collecting device is used to collect graphite powder precipitated during the running-in of the gear pump, and the collecting device includes a workbench, an air supply fan, a drive motor and a collecting mechanism. The air supply fan is tightly connected to the workbench, and the air outlet of the air supply fan is connected to the inlet of the gear pump. The drive motor is tightly connected to the workbench, and the output end of the drive motor is connected to the driving shaft of the gear pump. The collecting mechanism is tightly connected to the workbench, and the collecting mechanism is connected to the outlet of the gear pump.

[0006] Generally, graphite is used as packing seal for gear pumps. However, the strength of graphite is relatively low. During the running-in process, the driving shaft of the gear pump will continuously rub against the graphite seal during rotation, resulting in the continuous precipitation of a certain amount of graphite powder. As the running-in time of the gear pump increases, the precipitation amount of graphite powder will first gradually increase and finally gradually decrease until it tends to zero, that is, the quantity of the precipitated graphite powder is a continuously changing process. The workbench is used to provide a stable working environment for each mechanism. When running in the gear pump, first fix the gear pump on the workbench and connect the output end of the driving motor to the driving shaft of the gear pump. The driving motor outputs torque to drive the gear pump to operate at a fixed speed. The air outlet of the air supply fan is connected to the inlet of the gear pump to inject high-speed air flow into the inner cavity of the gear pump, and use the impact force of the high-speed air flow to flush out the graphite powder precipitated during the running-in process from the inner cavity of the gear pump, so as to self-clean the inner cavity of the gear pump. The flushed graphite powder finally flows into the collection mechanism for collection.

[0007] Furthermore, an adjusting mechanism is provided at the air outlet of the air supply fan. The adjusting mechanism is used to adjust the air volume. A detection mechanism is provided at the inlet of the collection mechanism. The detection mechanism is used to detect the quantity of graphite powder. The detection mechanism is externally connected to a control system, and the control system is used to control the action of the adjusting mechanism.

[0008] The air supply fan outputs high-speed air flow to the inner cavity of the gear pump at a fixed air volume. However, the quantity of graphite powder precipitated during the running-in period is unstable. Using the same air volume for impact will result in that when the precipitation amount of graphite powder increases, since the inner cavity has a certain resistance to the air flow when the air flow passes through the inner cavity of the gear pump, the wind force of the air flow will gradually decrease, and the smaller wind force cannot completely flush the graphite powder into the collection mechanism, and some graphite powder will remain in the pipeline. By detecting the quantity of the precipitated graphite powder in real time through the detection mechanism, when the quantity of graphite powder increases, the control system controls the adjusting mechanism to correspondingly increase the air volume to ensure that the precipitated graphite powder can completely flow into the collection mechanism.

[0009] Furthermore, the collection mechanism includes a connecting pipe and a collection box. The connecting pipe is connected to the outlet of the gear pump, the collection box is connected to the connecting pipe, and the collection box is firmly connected to the workbench. The detection mechanism is located in the connecting pipe.

[0010] The connecting pipe is used to connect the outlet of the gear pump and the collection box. When the graphite powder is flushed out of the gear pump by the air flow, it will flow through the connecting pipe and finally flow into the collection box for collection. By arranging the detection mechanism on one side of the connecting pipe close to the outlet of the gear pump, the quantity of the flowing-out graphite powder is detected in real time.

[0011] Further, the detection mechanism includes a front plate, a rear plate, a movable component, and a rotating motor. The front plate and the rear plate are fixedly connected to the inner wall of the connecting pipe. The front plate and the rear plate are arranged in the connecting pipe in sequence along the direction of air flow. The front plate and the rear plate are fan-shaped. The movable component is located between the front plate and the rear plate. The movable component is rotatably connected to the front plate. The movable component is used to capture the graphite powder precipitated by the gear pump. The rotating motor is fixedly connected to the rear plate. The output end of the rotating motor is drivingly connected to the movable component.

[0012] The front plate and the rear plate are fixed in the connecting pipe to provide an installation foundation for the rotating motor and the movable component. The rotating motor is used to output power to drive the movable component to continuously rotate in the gap between the front plate and the rear plate. When the air flow carrying graphite powder flows through the movable component, the graphite powder will be intercepted by the movable component. By detecting the amount of graphite powder intercepted on the movable component, the amount of graphite powder precipitated at a certain moment can be judged.

[0013] Further, the movable component includes fan-shaped blades, a rotating shaft, a transmission shaft, a support spring, and a pressure sensor. The fan-shaped blades are fixedly connected to the rotating shaft. A number of filter holes are provided on the fan-shaped blades. The transmission shaft is rotatably connected to the rear plate. The transmission shaft is drivingly connected to the output end of the rotating motor. The rotating shaft is drivingly connected to the transmission shaft. A guide block is provided on the rotating shaft. A guide groove is provided on the transmission shaft. The guide block is inserted into the guide groove. The pressure sensor is fixedly connected to the inner wall of the guide groove. The pressure sensor is electrically connected to the control system. One end of the support spring is fixedly connected to the rotating shaft. The other end of the support spring abuts against the detection end of the pressure sensor;

[0014] During detection: The guide block is slidably connected to the guide groove.

[0015] The drive shaft is used to transfer the torque of the rotating motor to the rotating shaft, thereby driving the rotating shaft to rotate around the front plate, and further driving the sector blades fixed on the rotating shaft to rotate. The front plate, rear plate and sector blades are one-fourth of a circle, and the sector blades can be completely retracted into the gap between the front plate and the rear plate. When the sector blades rotate outside the gap between the front plate and the rear plate, the graphite powder will be intercepted by the sector blades. And the sector blades will be affected by the wind force, making the sector blades tend to shift towards the guide groove side. Also, because there are filter holes on the sector blades, most of the air flow will pass through the filter holes and flow through the sector blades. At this time, the impact force of the air flow on the sector blades is not enough to push the support spring; when the graphite powder adheres to the sector blades, it will block the filter holes, increasing the windward area of the sector blades, and the impact force of the air flow on the sector blades will increase, causing the guide block to slide along the guide groove to one side, and the support spring is compressed by force, thereby transmitting a pressure to the pressure sensor. And the more graphite powder adheres to the sector blades, the more filter holes are blocked, the larger the windward area of the sector blades, the greater the impact force of the air flow on the sector blades, and the greater the pressure received by the pressure sensor. By detecting the change in the pressure received by the pressure sensor through the control system, the amount of graphite powder can be judged; the greater the pressure received by the pressure sensor indicates the more graphite powder precipitated.

[0016] Further, a scraper and a collection chamber are provided on one side of the front plate close to the sector blades;

[0017] During cleaning: the scraper abuts against the sector blades.

[0018] When the sector blades attached with graphite powder rotate to the front plate, they will be scraped off by the scraper and fall into the collection chamber. That is, as the sector blades rotate continuously, the attached graphite powder will be continuously scraped off, realizing the continuous detection of the amount of graphite powder.

[0019] Further, the adjusting mechanism includes an air pipe and an adjusting motor. One end of the air pipe is connected to the air outlet of the air supply fan, and the other end of the air pipe is connected to the inlet of the gear pump. The adjusting motor is fixedly connected to the air pipe. A transmission gear is provided at the output end of the adjusting motor. The adjusting motor is electrically connected to the control system. An activity chamber is provided in the air pipe. A rotating ring, movable blades and a fixed ring are arranged in sequence in the activity chamber. The rotating ring is rotatably connected to the inner wall of the activity chamber. The movable blades are slidably connected to the rotating ring. A plurality of groups of movable blades are arranged along the circumference of the rotating ring. The fixed ring is fixedly connected to the inner wall of the activity chamber.

[0020] A number of movable blades arranged circumferentially along the rotating ring form a circular channel. The adjustment motor is used to drive the rotation of the rotating ring, and then drive the movable blades to slide along the rotating ring, so that the cross-section of the circular channel formed by the number of movable blades increases or decreases. The fixed ring is used to guide the movement of the movable blades; in the initial state, the circular channel formed by the number of movable blades is in a semi-open state. When the control system detects an increase in the pressure received by the pressure sensor, the adjustment motor starts and drives the rotation of the rotating ring, thereby driving the movable blades to expand outwards, so that the cross-section of the circular channel formed by the number of movable blades increases, thereby increasing the air intake volume. That is, the air intake volume is automatically adjusted according to the precipitation amount of the graphite powder, so that the precipitated graphite powder can completely flow into the collection mechanism, thereby improving the cleaning effect of the graphite powder.

[0021] Further, the rotating ring is provided with a tooth surface and an arc-shaped groove. The movable blade is provided with a guide post. The tooth surface is in transmission connection with the transmission gear, the guide post is slidably connected with the arc-shaped groove, and the fixed ring is provided with a chute, and the movable blade is slidably connected with the chute.

[0022] The tooth surface is used to engage the transmission gear, so as to transmit the power of the adjustment motor to the rotating ring. The guide post and the arc-shaped groove cooperate to enable the movable blade to move along the arc-shaped groove, so as to realize expansion and contraction. The chute is used to guide the movable blade.

[0023] Further, a flow guide block is provided on one side of the front plate located on the air inlet surface, and the flow guide block is streamlined.

[0024] The streamlined flow guide block can guide the air flow, avoid the air flow directly impacting on the front plate, and improve the air flow passability.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. By connecting the air outlet of the air supply fan to the inlet of the gear pump, the graphite powder precipitated during the running-in process is flushed out of the inner cavity of the gear pump by the impact force of the high-speed air flow, and the inner cavity of the gear pump is self-cleaned.

[0027] 2. By setting the front plate, the rear plate and the fan-shaped blades to a quarter of a circle, the fan-shaped blades can be completely retracted into the gap between the front plate and the rear plate. When the fan-shaped blades rotate out of the gap between the front plate and the rear plate, the graphite powder will be intercepted by the fan-shaped blades. Because the fan-shaped blades are provided with filter holes, most of the airflow will flow through the fan-shaped blades through the filter holes. At this time, the impact force of the airflow on the fan-shaped blades is not enough to push the support spring; when the graphite powder adheres to the fan-shaped blades, it will block the filter holes, so that the windward area of the fan-shaped blades increases, and the impact force of the airflow on the fan-shaped blades will increase, causing the guide block to slide to one side along the guide groove, and the support spring is compressed, thereby transmitting a pressure to the pressure sensor. The more graphite powder adheres to the fan-shaped blades, the more filter holes are blocked, the larger the windward area of the fan-shaped blades, the greater the impact force of the airflow on the fan-shaped blades, and the greater the pressure on the pressure sensor. The amount of graphite powder can be determined by detecting the pressure change on the pressure sensor through the control system; the greater the pressure on the pressure sensor, the more graphite powder is precipitated.

[0028] 3. When the control system detects that the pressure on the pressure sensor increases, the regulating motor starts, driving the rotating ring to rotate, thereby driving the movable blades to expand outward, so that the cross-section of the circular channel composed of several movable blades increases, thereby increasing the air intake volume, that is, the air intake volume is automatically adjusted according to the amount of graphite powder precipitated, so that the precipitated graphite powder can completely flow into the collection mechanism, thereby improving the cleaning effect of the graphite powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a partial cross-sectional view of the present invention;

[0031] Figure 3 Schematic diagram of the detection mechanism of the present invention;

[0032] Figure 4 It is a partial cross-sectional view of the detection mechanism;

[0033] Figure 5 for Figure 4 A local enlarged view of point A;

[0034] Figure 6 is a schematic diagram of the rotating shaft and the transmission shaft;

[0035] Figure 7 It is a partial cross-sectional view of the front plate;

[0036] Figure 8 It is a schematic diagram of the adjustment mechanism of the present invention;

[0037] Figure 9It is a partial cross-sectional view of the adjustment mechanism;

[0038] Figure 10 This is the coordination diagram of the rotating ring, movable blades and fixed ring.

[0039] In the figure: 1-gear pump, 2-workbench, 3-air supply fan, 4-drive motor, 5-collecting mechanism, 51-connecting pipe, 52-collecting box, 6-adjusting mechanism, 61-ventilation pipe, 611-active chamber, 62-adjusting motor, 63-transmission gear, 64-rotating ring, 641-tooth surface, 642-arc groove, 65-active blade, 651-guide column, 66-fixing ring, 661-slide, 7-detection mechanism, 71-front plate, 711-scraper, 712-collecting chamber, 72-rear plate, 73-active component, 731-fan-shaped blade, 732-rotating shaft, 7321-guide block, 733-transmission shaft, 7331-guide groove, 734-support spring, 735-pressure sensor, 74-rotating motor, 75-guide block. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] Example: Figures 1-10 As shown, the present invention provides a technical solution for a graphite collection device with a self-cleaning function for a gear pump, the collection device is used to collect graphite powder precipitated during the running-in period of the gear pump 1, the collection device includes a workbench 2, an air supply fan 3, a drive motor 4 and a collection mechanism 5, the air supply fan 3 is tightly connected to the workbench 2, the air outlet of the air supply fan 3 is connected to the inlet of the gear pump 1, the drive motor 4 is tightly connected to the workbench 2, the output end of the drive motor 4 is connected to the driving shaft of the gear pump 1, the collection mechanism 5 is tightly connected to the workbench 2, and the collection mechanism 5 is connected to the outlet of the gear pump 1.

[0042] Generally, graphite is used as packing seal for gear pumps. However, the strength of graphite is relatively low. During the running-in process, the driving shaft of the gear pump will continuously rub against the graphite seal during rotation, thus continuously precipitating a certain amount of graphite powder. As the running-in time of the gear pump increases, the precipitation amount of graphite powder will first gradually increase and finally gradually decrease until it tends to zero, that is, the quantity of precipitated graphite powder is a continuously changing process; The workbench 2 is used to provide a stable working environment for each mechanism. When running in the gear pump 1, first fix the gear pump 1 on the workbench 2 and connect the output end of the driving motor 4 to the driving shaft of the gear pump 1. The driving motor 4 outputs torque to drive the gear pump 1 to rotate at a fixed speed. The air outlet of the air supply fan 3 is connected to the inlet of the gear pump 1 to inject high-speed air flow into the inner cavity of the gear pump 1. The impact force of the high-speed air flow is used to flush out the precipitated graphite powder from the inner cavity of the gear pump 1 during the running-in process, so as to self-clean the inner cavity of the gear pump 1. The flushed graphite powder finally flows into the collection mechanism 5 for collection.

[0043] An adjusting mechanism 6 is provided at the air outlet of the air supply fan 3. The adjusting mechanism 6 is used to adjust the air volume. A detection mechanism 7 is provided at the inlet of the collection mechanism 5. The detection mechanism 7 is used to detect the quantity of graphite powder. The detection mechanism 7 is externally connected to a control system, and the control system is used to control the action of the adjusting mechanism 6.

[0044] The air supply fan 3 outputs high-speed air flow to the inner cavity of the gear pump 1 at a fixed air volume. During the running-in period, the quantity of precipitated graphite powder is unstable. Using the same air volume for impact will result in that when the precipitation amount of graphite powder increases, due to the fact that there is a certain resistance in the inner cavity to the air flow when the air flow passes through the inner cavity of the gear pump 1, the wind force of the air flow will gradually decrease, and the smaller wind force cannot completely flush the graphite powder into the collection mechanism 5, and some graphite powder will remain in the pipeline. By detecting the quantity of precipitated graphite powder in real time through the detection mechanism 7, when the quantity of graphite powder increases, the control system controls the adjusting mechanism 6 to correspondingly increase the air volume to ensure that the precipitated graphite powder can completely flow into the collection mechanism 5.

[0045] The collection mechanism 5 includes a connecting pipe 51 and a collection box 52. The connecting pipe 51 is connected to the outlet of the gear pump 1, the collection box 52 is connected to the connecting pipe 51, and the collection box 52 is fixedly connected to the workbench 2. The detection mechanism 7 is located in the connecting pipe 51.

[0046] The connecting pipe 51 is used to connect the outlet of the gear pump 1 and the collection box 52. When the graphite powder is flushed out of the gear pump 1 by the air flow, it will flow through the connecting pipe 51 and finally flow into the collection box 52 for collection. By arranging the detection mechanism 7 on one side of the connecting pipe 51 close to the outlet of the gear pump 1, the quantity of the flowing-out graphite powder is detected in real time.

[0047] The detection mechanism 7 includes a front plate 71, a rear plate 72, a movable component 73 and a rotating motor 74. The front plate 71 and the rear plate 72 are fixedly connected to the inner wall of the connecting pipe 51. The front plate 71 and the rear plate 72 are arranged in the connecting pipe 51 in sequence along the direction of air flow movement. The front plate 71 and the rear plate 72 are fan-shaped. The movable component 73 is located between the front plate 71 and the rear plate 72. The movable component 73 is rotatably connected to the front plate 71. The movable component 73 is used to capture the graphite powder precipitated by the gear pump 1. The rotating motor 74 is fixedly connected to the rear plate 72. The output end of the rotating motor 74 is drivingly connected to the movable component 73.

[0048] The front plate 71 and the rear plate 72 are fixed in the connecting pipe 51 to provide an installation basis for the rotating motor 74 and the movable component 73. The rotating motor 74 is used to output power, so as to drive the movable component 73 to continuously rotate at the gap between the front plate 71 and the rear plate 72. When the air flow carrying the graphite powder flows through the movable component 73, the graphite powder will be intercepted by the movable component 73. By detecting the amount of graphite powder intercepted on the movable component 73, the amount of graphite powder precipitated at a certain moment can be judged.

[0049] The movable component 73 includes fan-shaped blades 731, a rotating shaft 732, a transmission shaft 733, a support spring 734 and a pressure sensor 735. The fan-shaped blades 731 are fixedly connected to the rotating shaft 732. A number of filter holes are provided on the fan-shaped blades 731. The transmission shaft 733 is rotatably connected to the rear plate 72. The transmission shaft 733 is drivingly connected to the output end of the rotating motor 74. The rotating shaft 732 is drivingly connected to the transmission shaft 733. A guide block 7321 is provided on the rotating shaft 732. A guide groove 7331 is provided on the transmission shaft 733. The guide block 7321 is inserted into the guide groove 7331. The pressure sensor 735 is fixedly connected to the inner wall of the guide groove 7331. The pressure sensor 735 is electrically connected to the control system. One end of the support spring 734 is fixedly connected to the rotating shaft 732. The other end of the support spring 734 abuts against the detection end of the pressure sensor 735;

[0050] During detection: The guide block 7321 is slidably connected to the guide groove 7331.

[0051] The drive shaft 733 is used to transfer the torque of the rotating motor 74 to the rotating shaft 732, thereby driving the rotating shaft 732 to rotate around the front plate 71, and further driving the sector blade 731 fixed on the rotating shaft 732 to rotate. The front plate 71, the rear plate 72 and the sector blade 731 are one-fourth of a circle. The sector blade 731 can be completely retracted into the gap between the front plate 71 and the rear plate 72. When the sector blade 731 rotates outside the gap between the front plate 71 and the rear plate 72, the graphite powder will be intercepted by the sector blade 731. And the sector blade 731 will be affected by the wind force, causing the sector blade 731 to tend to deflect towards the side of the guide groove 7331. Also, because the sector blade 731 is provided with filter holes, most of the air flow will flow through the sector blade 731 through the filter holes. At this time, the impact force of the air flow on the sector blade 731 is not enough to push the support spring 734; when the graphite powder adheres to the sector blade 731, it will block the filter holes, increasing the windward area of the sector blade 731. The impact force of the air flow on the sector blade 731 will increase, causing the guide block 7321 to slide along the guide groove 7331 to one side, and the support spring 734 is compressed by the force, thereby transmitting a pressure to the pressure sensor 735. And the more graphite powder adheres to the sector blade 731, the more filter holes will be blocked, the larger the windward area of the sector blade 731, the greater the impact force of the air flow on the sector blade 731, and the greater the pressure received by the pressure sensor 735. By detecting the change in the pressure received by the pressure sensor 735 through the control system, the amount of graphite powder can be judged; the greater the pressure received by the pressure sensor 735 indicates the more graphite powder precipitated.

[0052] On one side of the front plate 71 close to the sector blade 731, a scraper 711 and a collection chamber 712 are provided;

[0053] During cleaning: the scraper 711 abuts against the sector blade 731.

[0054] When the sector blade 731 attached with graphite powder rotates to the front plate 71, it will be scraped off by the scraper 711 and fall into the collection chamber 712. That is, as the sector blade 731 rotates continuously, the attached graphite powder will be continuously scraped off, thus realizing the continuous detection of the amount of graphite powder.

[0055] The adjusting mechanism 6 includes an air vent pipe 61 and an adjusting motor 62. One end of the air vent pipe 61 is connected to the air outlet of the air supply fan 3, and the other end of the air vent pipe 61 is connected to the inlet of the gear pump 1. The adjusting motor 62 is fixedly connected to the air vent pipe 61. A transmission gear 63 is provided at the output end of the adjusting motor 62. The adjusting motor 62 is electrically connected to the control system. An activity cavity 611 is provided in the air vent pipe 61. A rotating ring 64, movable blades 65 and a fixed ring 66 are arranged in sequence in the activity cavity 611. The rotating ring 64 is rotatably connected to the inner wall of the activity cavity 611. The movable blades 65 are slidably connected to the rotating ring 64. A plurality of groups of movable blades 65 are arranged along the circumferential direction of the rotating ring 64. The fixed ring 66 is fixedly connected to the inner wall of the activity cavity 611.

[0056] A circular channel is formed by a plurality of movable blades 65 arranged along the circumferential direction of the rotating ring 64. The adjusting motor 62 is used to drive the rotating ring 64 to rotate, and then drive the movable blades 65 to slide along the rotating ring 64, so that the cross-section of the circular channel formed by the plurality of movable blades 65 increases or decreases. The fixed ring 66 is used to guide the movement of the movable blades 65. In the initial state, the circular channel formed by the plurality of movable blades 65 is in a semi-open state. When the control system detects that the pressure received by the pressure sensor 735 increases, the adjusting motor 62 is started to drive the rotating ring 64 to rotate, thereby driving the movable blades 65 to expand outwards, so that the cross-section of the circular channel formed by the plurality of movable blades 65 increases, thereby increasing the air intake volume. That is, the air intake volume is automatically adjusted according to the precipitation amount of the graphite powder, so that the precipitated graphite powder can completely flow into the collection mechanism 5, thereby improving the cleaning effect of the graphite powder.

[0057] The rotating ring 64 is provided with a tooth surface 641 and an arc-shaped groove 642. The movable blade 65 is provided with a guide post 651. The tooth surface 641 is in transmission connection with the transmission gear 63. The guide post 651 is slidably connected to the arc-shaped groove 642. The fixed ring 66 is provided with a chute 661. The movable blade 65 is slidably connected to the chute 661.

[0058] The tooth surface 641 is used to engage with the transmission gear 63, so as to transmit the power of the adjusting motor 62 to the rotating ring 64. The guide post 651 cooperates with the arc-shaped groove 642, so that the movable blade 65 can move along the arc-shaped groove 642, thereby realizing expansion and contraction. The chute 661 is used to guide the movable blade 65.

[0059] A flow guide block 75 is provided on one side of the front plate 71 located on the air inlet surface. The flow guide block 75 is streamlined.

[0060] The streamlined flow guide block 75 can guide the air flow, avoid the air flow directly impacting on the front plate 71, and improve the air flow passability.

[0061] Working principle of the present invention: When running in the gear pump 1, first fix the gear pump 1 on the workbench 2, the driving motor 4 outputs torque to drive the gear pump 1 to operate at a fixed speed, and the air supply fan 3 injects high-speed air flow into the inner cavity of the gear pump 1. The impact force of the high-speed air flow is used to flush out the graphite powder precipitated during the running-in process from the inner cavity of the gear pump 1, so as to self-clean the inner cavity of the gear pump 1; when detecting the quantity of graphite powder, the rotating motor 74 drives the sector blade 731 fixed on the rotating shaft 732 to rotate. When the sector blade 731 rotates outside the gap between the front plate 71 and the rear plate 72, the graphite powder will be intercepted by the sector blade 731. And because there are filter holes on the sector blade 731, most of the air flow will flow through the sector blade 731 through the filter holes. At this time, the impact force of the air flow on the sector blade 731 is not enough to push the support spring 734; when the graphite powder adheres to the sector blade 731, it will block the filter holes, increasing the windward area of the sector blade 731, and the impact force of the air flow on the sector blade 731 will increase, causing the guide block 7321 to slide along the guide groove 7331 to one side, and the support spring 734 is compressed by force, thereby transmitting a pressure to the pressure sensor 735. Moreover, the more graphite powder adheres to the sector blade 731, the more filter holes are blocked, the larger the windward area of the sector blade 731, the greater the impact force of the air flow on the sector blade 731, and the greater the pressure received by the pressure sensor 735. By detecting the change in the pressure received by the pressure sensor 735 through the control system, the quantity of graphite powder can be judged; the greater the pressure received by the pressure sensor 735 indicates that the quantity of precipitated graphite powder is more; then, the control system starts the regulating motor 62 to rotate a corresponding angle, which drives the rotating ring 64 to rotate, and further drives the movable blade 65 to slide along the rotating ring 64, so that the cross-sectional area of the circular channel formed by several movable blades 65 increases or decreases, thereby adjusting the air intake volume.

[0062] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A graphite collecting device with a self-cleaning function for a gear pump, the collecting device being used to collect graphite powder precipitated during the running-in period of the gear pump (1), characterized in that: The collecting device comprises a workbench (2), an air supply fan (3), a driving motor (4) and a collecting mechanism (5); the air supply fan (3) is firmly connected to the workbench (2); the air outlet of the air supply fan (3) is communicated with the inlet of the gear pump (1); the driving motor (4) is firmly connected to the workbench (2); the output end of the driving motor (4) is in driving connection with the driving shaft of the gear pump (1); the collecting mechanism (5) is firmly connected to the workbench (2); and the collecting mechanism (5) is communicated with the outlet of the gear pump (1); The air outlet of the air supply fan (3) is provided with an adjusting mechanism (6), and the adjusting mechanism (6) is used to adjust the air volume. The inlet of the collecting mechanism (5) is provided with a detecting mechanism (7), and the detecting mechanism (7) is used to detect the amount of graphite powder. The detecting mechanism (7) is externally connected to a control system, and the control system is used to control the action of the adjusting mechanism (6); The collecting mechanism (5) comprises a connecting pipe (51) and a collecting box (52), wherein the connecting pipe (51) is in communication with the outlet of the gear pump (1), the collecting box (52) is in communication with the connecting pipe (51), the collecting box (52) is firmly connected to the workbench (2), and the detecting mechanism (7) is located in the connecting pipe (51); The detection mechanism (7) includes a front plate (71), a rear plate (72), a movable component (73) and a rotating motor (74). The front plate (71) and the rear plate (72) are tightly connected to the inner wall of the connecting pipe (51). The front plate (71) and the rear plate (72) are sequentially arranged in the connecting pipe (51) along the direction of movement of the airflow. The front plate (71) and the rear plate (72) are fan-shaped. The movable component (73) is located between the front plate (71) and the rear plate (72). The movable component (73) is rotationally connected to the front plate (71). The movable component (73) is used to capture graphite powder precipitated from the gear pump (1). The rotating motor (74) is tightly connected to the rear plate (72). The output end of the rotating motor (74) is transmission-connected to the movable component (73).

2. The graphite collecting device with self-cleaning function for a gear pump according to claim 1, characterized in that: The movable assembly (73) includes a fan-shaped blade (731), a rotating shaft (732), a transmission shaft (733), a support spring (734) and a pressure sensor (735). The fan-shaped blade (731) is tightly connected to the rotating shaft (732). A plurality of filter holes are provided on the fan-shaped blade (731). The transmission shaft (733) is rotationally connected to the rear plate (72). The transmission shaft (733) is transmission-connected to the output end of the rotating motor (74). The rotating shaft (732) is transmission-connected to the transmission shaft (733). The rotating shaft (732) is provided with a guide block (7321), the transmission shaft (733) is provided with a guide groove (7331), the guide block (7321) is inserted into the guide groove (7331), the pressure sensor (735) is fastened to the inner wall of the guide groove (7331), the pressure sensor (735) is electrically connected to the control system, one end of the support spring (734) is fastened to the rotating shaft (732), and the other end of the support spring (734) abuts against the detection end of the pressure sensor (735); During detection: the guide block (7321) is slidably connected to the guide groove (7331).

3. The graphite collecting device with self-cleaning function for a gear pump according to claim 2, characterized in that: A scraper (711) and a collection chamber (712) are provided on one side of the front plate (71) close to the fan-shaped blades (731); During cleaning: the scraper (711) abuts against the fan-shaped blade (731).

4. The graphite collecting device with self-cleaning function for a gear pump according to claim 3, characterized in that: The regulating mechanism (6) includes a vent pipe (61) and a regulating motor (62), one end of the vent pipe (61) is communicated with the air outlet of the air supply fan (3), and the other end of the vent pipe (61) is communicated with the inlet of the gear pump (1), the regulating motor (62) is tightly connected to the vent pipe (61), the output end of the regulating motor (62) is provided with a transmission gear (63), and the regulating motor (62) is electrically connected to the control system, an active cavity (611) is provided in the vent pipe (61), a rotating ring (64), a movable blade (65) and a fixed ring (66) are sequentially arranged in the active cavity (611), the rotating ring (64) is rotatably connected to the inner wall of the active cavity (611), the movable blade (65) is slidably connected to the rotating ring (64), a plurality of movable blades (65) are arranged along the circumference of the rotating ring (64), and the fixed ring (66) is tightly connected to the inner wall of the active cavity (611).

5. The graphite collecting device with self-cleaning function for a gear pump according to claim 4, characterized in that: The rotating ring (64) is provided with a tooth surface (641) and an arc groove (642), the movable blade (65) is provided with a guide column (651), the tooth surface (641) is in transmission connection with the transmission gear (63), the guide column (651) is in sliding connection with the arc groove (642), the fixed ring (66) is provided with a slide groove (661), and the movable blade (65) is in sliding connection with the slide groove (661).

6. The graphite collecting device with self-cleaning function for a gear pump according to claim 2, characterized in that: A guide block (75) is provided on one side of the front plate (71) located on the air inlet surface, and the guide block (75) is streamlined.

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