Graphite collecting device with self-cleaning function for gear pump

Abstract

The invention discloses a graphite collecting device with a self-cleaning function for a gear pump, and relates to the technical field of gear pump graphite collection, the collecting device is used for collecting graphite powder separated out in the gear pump running-in period, the collecting device comprises a workbench, an air supply fan, a driving motor and a collecting mechanism, the air supply fan is fixedly connected with the workbench, and the driving motor is fixedly connected with the workbench; an air outlet of the air supply fan communicates with an inlet of the gear pump, the driving motor is fixedly connected with the workbench, the output end of the driving motor is in transmission connection with a driving shaft of the gear pump, and the collecting mechanism is fixedly connected with the workbench and communicates with an outlet of the gear pump; graphite powder separated out in the running-in process is flushed out of an inner cavity of the gear pump through impact force of airflow provided by the air supply fan, the inner cavity of the gear pump is self-cleaned, and the flushed-out graphite powder finally flows into the collecting mechanism to be collected.

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 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. When collecting graphite, existing collection devices generally use the same air volume for impact. 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 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 period of the gear pump, the collecting device includes a workbench, an air supply fan, a driving motor and a collecting mechanism, the air supply fan is tightly connected to the workbench, the air outlet of the air supply fan is connected to the inlet of the gear pump, the driving motor is tightly connected to the workbench, the output end of the driving motor is transmission-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] 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. As the running-in time of the gear pump increases, the amount of graphite powder precipitated will first gradually increase, and finally gradually decrease until it tends to zero, that is, the amount of precipitated graphite powder is a constantly 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 drive motor to the driving shaft of the gear pump. The drive 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 airflow into the inner cavity of the gear pump. The impact force of the high-speed airflow is used to flush the graphite powder precipitated during the running-in process out of the inner cavity of the gear pump, and the inner cavity of the gear pump is self-cleaned. 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, and the adjusting mechanism is used to adjust the air volume. A detection mechanism is provided at the inlet of the collecting mechanism, and the detection mechanism is used to detect the amount 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 airflow to the inner cavity of the gear pump with a fixed air volume, and the amount of graphite powder precipitated during the running-in period is unstable. Using the same air volume for impact will result in an increase in the amount of graphite powder precipitated. Since the air flow has a certain resistance to the air flow in the inner cavity of the gear pump when passing through it, the wind force of the air flow will gradually decrease, and the smaller wind force cannot completely impact the graphite powder into the collection mechanism, and some graphite powder will remain in the pipeline. The amount of precipitated graphite powder is detected in real time by the detection mechanism. When the amount of graphite powder increases, the control system controls the regulating mechanism to increase the air volume accordingly to ensure that the precipitated graphite powder can completely flow into the collection mechanism.

[0009] Furthermore, the collecting mechanism includes a connecting tube and a collecting box, the connecting tube is connected to the outlet of the gear pump, the collecting box is connected to the connecting tube, the collecting box is firmly connected to the workbench, and the detecting mechanism is located in the connecting tube.

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

[0011] Furthermore, 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 tightly connected to the inner wall of the connecting tube. The front plate and the rear plate are arranged in sequence in the connecting tube along the movement direction of the airflow. 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 graphite powder precipitated from the gear pump. The rotating motor is tightly connected to the rear plate, and the output end of the rotating motor is transmission-connected to the movable component.

[0012] The front plate and the rear plate are fixed in the connecting pipe to provide an installation basis for the rotating motor and the movable component. The rotating motor is used to output power, thereby driving the movable component to continuously rotate in the gap between the front plate and the rear plate. When the airflow 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 determined.

[0013] Further, the movable component includes a fan-shaped blade, a rotating shaft, a transmission shaft, a support spring and a pressure sensor, the fan-shaped blade is tightly connected to the rotating shaft, a plurality of filter holes are provided on the fan-shaped blade, the transmission shaft is rotationally connected to the rear plate, the transmission shaft is transmission-connected to the output end of the rotating motor, the rotating shaft is transmission-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 tightly 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 tightly connected to the rotating shaft, and 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 transmission shaft is used to transmit the torque of the rotating motor to the rotating shaft, thereby driving the rotating shaft to rotate around the front plate, and then driving the fan-shaped blades fixed on the rotating shaft to rotate. The front plate, the rear plate and the fan-shaped blades are a quarter of a circle, and 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, and the fan-shaped blades will be affected by the wind, so that the fan-shaped blades tend to deviate to one side of the guide groove. 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; and when the graphite powder When the powder adheres to the fan-shaped blades, it will block the filter holes, increasing the windward area of ​​the fan-shaped blades, 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 supporting 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 will be 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 changes on the pressure sensor through the control system; the greater the pressure on the pressure sensor, the more graphite powder is precipitated.

[0016] Furthermore, a scraper and a collection chamber are provided on one side of the front plate near the fan-shaped blades;

[0017] When cleaning: the scraper contacts the fan-shaped blades.

[0018] When the fan-shaped blades with graphite powder attached rotate to the front plate, they will be scraped off by the scraper and fall into the collection chamber. That is, as the fan-shaped blades continue to rotate, the attached graphite powder will be continuously scraped off, thus achieving uninterrupted detection of the amount of graphite powder.

[0019] Furthermore, the regulating mechanism includes a ventilation pipe and a regulating motor, one end of the ventilation pipe is connected to the air outlet of the air supply fan, the other end of the ventilation pipe is connected to the inlet of the gear pump, the regulating motor is tightly connected to the ventilation pipe, the output end of the regulating motor is provided with a transmission gear, the regulating motor is electrically connected to the control system, an active cavity is provided in the ventilation pipe, a rotating ring, movable blades and a fixed ring are arranged in sequence in the active cavity, the rotating ring is rotatably connected to the inner wall of the active cavity, the movable blades are slidably connected to the rotating ring, several groups of movable blades are arranged along the circumference of the rotating ring, and the fixed ring is tightly connected to the inner wall of the active cavity.

[0020] A number of movable blades arranged along the circumference of the rotating ring form a circular channel. The adjusting motor is used to drive the rotating ring to rotate, and then drive the movable blades to slide along the rotating ring, so that the cross-section of the circular channel composed of the several movable blades increases or decreases, and the fixed ring is used to guide the movement of the movable blades. In the initial state, the circular channel composed of the several movable blades is in a semi-open state. When the control system detects that the pressure on the pressure sensor increases, the adjusting motor starts to drive the rotating ring to rotate, thereby driving the movable blades to expand outward, so that the cross-section of the circular channel composed of the several movable blades increases, thereby increasing the air intake, that is, the air intake is automatically adjusted according to the precipitation amount of 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] Furthermore, a tooth surface and an arc groove are provided on the rotating ring, a guide column is provided on the movable blade, the tooth surface is transmission-connected to the transmission gear, the guide column is slidingly connected to the arc groove, a slide groove is provided on the fixed ring, and the movable blade is slidingly connected to the slide groove.

[0022] The tooth surface is used to mesh with the transmission gear to transmit the power of the regulating motor to the rotating ring. The guide column cooperates with the arc groove so that the movable blade can move along the arc groove to achieve expansion and contraction. The slide groove is used to provide guidance for the movable blade.

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

[0024] The streamlined guide block can guide the airflow to prevent it from directly impacting the front panel, thereby improving the airflow's permeability.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. By connecting the air outlet of the air supply fan to the inlet of the gear pump, the impact force of the high-speed airflow is used to flush the graphite powder precipitated during the running-in process out of the inner cavity of the gear pump, so as to self-clean the inner cavity of the gear pump.

[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; and when the graphite powder adheres to the fan-shaped blades, the filter holes will be blocked, 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, so that the guide block slides 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 to drive 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 precipitation amount of graphite powder, 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 It is a 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 a rotating shaft and a transmission shaft;

[0035] Figure 7 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] Fig. 9It is a partial cross-sectional view of the adjustment mechanism;

[0038] Fig.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-collection mechanism, 51-connecting pipe, 52-collection box, 6-adjustment mechanism, 61-ventilation pipe, 611-active chamber, 62-adjustment motor, 63-transmission gear, 64-rotating ring, 641-tooth surface, 642-arc groove, 65-active blade, 651-guide column, 66-fixed ring, 661-slide, 7-detection mechanism, 71-front plate, 711-scraper, 712-collection 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

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

[0042] 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. As the running-in time of the gear pump increases, the amount of graphite powder precipitated will first gradually increase, and finally gradually decrease until it tends to zero, that is, the amount of precipitated graphite powder is a constantly changing process; the workbench 2 is used to provide a stable working environment for each mechanism. When the gear pump 1 is run-in, the gear pump 1 is first fixed on the workbench 2, and the output end of the drive motor 4 is connected to the driving shaft of the gear pump 1. The drive motor 4 outputs a torque to drive the gear pump 1 to operate at a fixed speed. The air outlet of the air supply fan 3 is connected to the inlet of the gear pump 1, which is used to inject a high-speed airflow into the inner cavity of the gear pump 1. The impact force of the high-speed airflow is used to flush the graphite powder precipitated during the running-in process out of the inner cavity of the gear pump 1, and the inner cavity of the gear pump 1 is self-cleaned. The flushed graphite powder finally flows into the collecting mechanism 5 for collection.

[0043] An adjusting mechanism 6 is provided at the air outlet of the air supply fan 3 for adjusting the air volume. A detection mechanism 7 is provided at the inlet of the collecting mechanism 5 for detecting the amount of graphite powder. The detection mechanism 7 is externally connected to a control system for controlling the action of the adjusting mechanism 6.

[0044] The air supply fan 3 outputs high-speed airflow to the inner cavity of the gear pump 1 with a fixed air volume, and the amount of graphite powder precipitated during the running-in period is unstable. Using the same air volume for impact will result in an increase in the amount of graphite powder precipitated. Since the inner cavity has a certain resistance to the airflow when the airflow passes through the inner cavity of the gear pump 1, the wind force of the airflow will gradually decrease, and the smaller wind force cannot completely impact the graphite powder into the collecting mechanism 5, and some graphite powder will remain in the pipeline. The amount of precipitated graphite powder is detected in real time by the detection mechanism 7. When the amount of graphite powder increases, the control system controls the regulating mechanism 6 to increase the air volume accordingly to ensure that the precipitated graphite powder can completely flow into the collecting mechanism 5.

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

[0046] The connecting pipe 51 is used to connect the outlet of the gear pump 1 with the collecting box 52. When the graphite powder is flushed out of the gear pump 1 by the airflow, it will flow through the connecting pipe 51 and finally flow into the collecting box 52 for collection. By arranging the detection mechanism 7 on the side of the connecting pipe 51 close to the outlet of the gear pump 1, the amount of the outflowing graphite powder can be 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 tightly connected to the inner wall of the connecting pipe 51. The front plate 71 and the rear plate 72 are arranged in sequence in the connecting pipe 51 along the movement direction 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 rotatably connected to the front plate 71. The movable component 73 is used to capture the graphite powder precipitated from the gear pump 1. The rotating motor 74 is tightly connected to the rear plate 72, and the output end of the rotating motor 74 is transmission-connected to the movable component 73.

[0048] The front plate 71 and the rear plate 72 are fixed in the connecting tube 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, thereby driving the movable component 73 to continuously rotate in the gap between the front plate 71 and the rear plate 72. When the airflow carrying 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 determined.

[0049] The movable component 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. 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 tightly 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 tightly 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 transmission shaft 733 is used to transmit 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 then driving the fan-shaped blades 731 fixed on the rotating shaft 732 to rotate. The front plate 71, the rear plate 72 and the fan-shaped blades 731 are a quarter of a circle, and the fan-shaped blades 731 can be completely retracted into the gap between the front plate 71 and the rear plate 72. When the fan-shaped blades 731 rotate out of the gap between the front plate 71 and the rear plate 72, the graphite powder will be intercepted by the fan-shaped blades 731, and the fan-shaped blades 731 will be affected by the wind, so that the fan-shaped blades 731 tend to deviate to one side of the guide groove 7331. Because the fan-shaped blades 731 are provided with filter holes, most of the airflow will flow through the fan-shaped blades 731 through the filter holes. At this time, the impact force of the airflow on the fan-shaped blades 731 is not sufficient to push Support spring 734; when graphite powder adheres to fan-shaped blade 731, it will block the filter holes, so that the windward area of ​​fan-shaped blade 731 increases, and the impact force of airflow on fan-shaped blade 731 will increase, causing guide block 7321 to slide to one side along guide groove 7331, and support spring 734 is compressed, thereby transmitting a pressure to pressure sensor 735. The more graphite powder adheres to fan-shaped blade 731, the more blocked filter holes there are, and the larger the windward area of ​​fan-shaped blade 731, the greater the impact force of airflow on fan-shaped blade 731 will be, and the greater the pressure on pressure sensor 735 will be. By detecting the pressure change on pressure sensor 735 through the control system, the amount of graphite powder can be determined; the greater the pressure on pressure sensor 735, the more graphite powder is precipitated.

[0052] 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;

[0053] During cleaning: the scraper 711 abuts against the fan-shaped blade 731 .

[0054] When the fan-shaped blade 731 with graphite powder attached 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 fan-shaped blade 731 continues to rotate, the attached graphite powder will be continuously scraped off, thereby achieving uninterrupted detection of the amount of graphite powder.

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

[0056] A number of movable blades 65 arranged along the circumference of the rotating ring 64 form a circular channel. 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 composed of the several 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 composed of the several movable blades 65 is in a semi-open state. When the control system detects that the pressure on the pressure sensor 735 increases, the adjusting motor 62 starts, drives the rotating ring 64 to rotate, thereby driving the movable blades 65 to expand outward, so that the cross-section of the circular channel composed of the several movable blades 65 increases, thereby increasing the air intake, that is, the air intake is automatically adjusted according to the precipitation amount of graphite powder, so that the precipitated graphite powder can completely flow into the collecting 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 groove 642, the movable blade 65 is provided with a guide column 651, the tooth surface 641 is transmission-connected with the transmission gear 63, the guide column 651 is slidingly connected with the arc groove 642, the fixed ring 66 is provided with a slide groove 661, and the movable blade 65 is slidingly connected with the slide groove 661.

[0058] The tooth surface 641 is used to mesh with the transmission gear 63, thereby transmitting the power of the adjustment motor 62 to the rotating ring 64. The guide column 651 cooperates with the arc groove 642, so that the movable blade 65 can move along the arc groove 642 to achieve expansion and contraction. The slide groove 661 is used to provide guidance for the movable blade 65.

[0059] 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.

[0060] The streamlined guide block 75 can guide the airflow to prevent the airflow from directly impacting the front plate 71, thereby improving the permeability of the airflow.

[0061] The working principle of the present invention is as follows: when the gear pump 1 is run-in, the gear pump 1 is first fixed on the workbench 2, the driving motor 4 outputs torque, drives the gear pump 1 to run at a fixed speed, and the air supply fan 3 injects high-speed airflow into the inner cavity of the gear pump 1, and uses the impact force of the high-speed airflow to flush the graphite powder precipitated during the running-in process out of the inner cavity of the gear pump 1, so as to self-clean the inner cavity of the gear pump 1; when the amount of graphite powder is detected, the rotating motor 74 drives the fan-shaped blade 731 fixed on the rotating shaft 732 to rotate, and when the fan-shaped blade 731 rotates to the outside of the gap between the front plate 71 and the rear plate 72, the graphite powder will be intercepted by the fan-shaped blade 731, and because the fan-shaped blade 731 is provided with a filter hole, most of the airflow will flow through the fan-shaped blade 731 through the filter hole, and at this time, the impact force of the airflow on the fan-shaped blade 731 is not enough to push the support spring 734; and when the graphite powder adheres to the fan-shaped blade 731, it will block the filter hole, so that the fan-shaped blade 731 As the frontal area increases, the impact force of the airflow on the fan-shaped blade 731 will increase, causing the guide block 7321 to slide to one side along the guide groove 7331, and the support spring 734 is compressed, thereby transmitting a pressure to the pressure sensor 735. The more graphite powder attached to the fan-shaped blade 731, the more blocked filter holes there are. The larger the frontal area of ​​the fan-shaped blade 731, the greater the impact force of the airflow on the fan-shaped blade 731, and the greater the pressure on the pressure sensor 735. The control system detects the pressure change on the pressure sensor 735 to determine the amount of graphite powder. The greater the pressure on the pressure sensor 735, the greater the amount of graphite powder precipitated. The control system then starts the adjustment motor 62 to rotate the corresponding angle to drive the rotating ring 64 to rotate, and then drives the movable blade 65 to slide along the rotating ring 64, so that the cross-section of the circular channel composed of several movable blades 65 increases or decreases, thereby adjusting the air intake.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

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 drive motor (4) and a collecting 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 collecting mechanism (5) is tightly connected to the workbench (2); and the collecting mechanism (5) is connected to the outlet of the gear pump (1).

2. The graphite collecting device with self-cleaning function for a gear pump according to claim 1, characterized in that: 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 detection mechanism (7), and the detection mechanism (7) is used to detect the amount 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).

3. The graphite collecting device with self-cleaning function for a gear pump according to claim 2, characterized in that: The collecting mechanism (5) comprises a connecting pipe (51) and a collecting box (52); 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).

4. The graphite collecting device with self-cleaning function for a gear pump according to claim 3, characterized in that: The detection mechanism (7) comprises 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 arranged in sequence in the connecting pipe (51) along the moving direction 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); and the output end of the rotating motor (74) is transmission-connected to the movable component (73).

5. The graphite collecting device with self-cleaning function for a gear pump according to claim 4, characterized in that: The movable assembly (73) comprises 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 tightly 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 tightly connected to the rotating shaft (732), and the other end of the support spring (734) is in contact with the detection end of the pressure sensor (735); During detection: the guide block (7321) is slidably connected to the guide groove (7331).

6. The graphite collecting device with self-cleaning function for a gear pump according to claim 5, 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).

7. The graphite collecting device with self-cleaning function for a gear pump according to claim 6, characterized in that: The regulating mechanism (6) comprises 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); 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); a transmission gear (63) is provided at the output end of the regulating motor (62); the regulating motor (62) is electrically connected to a 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 arranged in sequence 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 in a circumferential direction of the rotating ring (64); and the fixed ring (66) is tightly connected to the inner wall of the active cavity (611).

8. The graphite collecting device with self-cleaning function for a gear pump according to claim 7, characterized in that: 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 column (651); the tooth surface (641) is transmission-connected to the transmission gear (63); the guide column (651) is slidably connected to the arc-shaped groove (642); the fixed ring (66) is provided with a slide groove (661); the movable blade (65) is slidably connected to the slide groove (661).

9. The graphite collecting device with self-cleaning function for a gear pump according to claim 5, 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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