CN112833006B - Intelligent gear pump with adjustable end face clearance - Google Patents

Intelligent gear pump with adjustable end face clearance Download PDF

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Publication number
CN112833006B
CN112833006B CN202110159485.9A CN202110159485A CN112833006B CN 112833006 B CN112833006 B CN 112833006B CN 202110159485 A CN202110159485 A CN 202110159485A CN 112833006 B CN112833006 B CN 112833006B
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China
Prior art keywords
piezoelectric ceramic
slide bearing
ceramic gasket
pump body
sliding bearing
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Active
Application number
CN202110159485.9A
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Chinese (zh)
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CN112833006A (en
Inventor
周洋
陈欣瑞
孙鑫垚
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Suzhou Profit Intelligent Technology Co.,Ltd.
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Zhengzhou University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0088—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/81—Sensor, e.g. electronic sensor for control or monitoring

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

The invention discloses an intelligent gear pump capable of adjusting end face clearance, belonging to the technical field of gear pumps; the intelligent control system is formed by connecting an ultrasonic probe and a piezoelectric ceramic gasket with data processing control equipment through a control circuit; the ultrasonic probe is connected in the sliding bearing, the sliding bearing is connected with the front end cover and the rear end cover through the piezoelectric ceramic gasket, and the ultrasonic probe is connected with external data processing control equipment through a control circuit and is connected with the piezoelectric ceramic gasket through the data processing control equipment. According to the invention, the pump body device is combined with the intelligent control system, and the axial distance between the thickness adjusting gear of the piezoelectric ceramic gasket and the sliding bearing shaft is changed, so that the accurate regulation and control of the end surface gap and the oil film thickness are realized.

Description

Intelligent gear pump with adjustable end face clearance
Technical Field
The invention relates to a gear pump, in particular to an intelligent gear pump capable of adjusting an end face gap, and belongs to the technical field of gear pumps.
Background
The gear pump has wide applicable industries and large range of conveying media, and plays an important role in numerous chemical and industrial fields. And has the advantages of firm structure, convenient installation, easy disassembly and the like.
During the operation of the gear pump, the leakage between the bearing and the end face of the gear accounts for more than 75% of the whole leakage amount, and the leakage can cause the reduction of the volumetric efficiency of the gear pump and reduce the service performance of the whole gear pump. The main reason for the end face leakage is that the gear and the bearing are abraded more rapidly if the end face gap is too small; and excessive end face clearance will exacerbate end face leakage. Therefore, it is necessary to monitor and control the end face clearance.
At present, the adjustment of the end surface clearance is passive, the size of the clearance and the thickness of an oil film in the clearance cannot be known, so that the leakage and abrasion loss cannot be accurately predicted according to the thickness of the oil film, and the performance of the gear pump in the service process cannot be evaluated.
Disclosure of Invention
The purpose of the invention is: the problem that the size of a gap and the thickness of an oil film in the gap cannot be known when the end face gap is adjusted in the prior art, and therefore leakage and abrasion loss cannot be accurately predicted according to the thickness of the oil film is solved.
In order to achieve the purpose, the invention adopts the following technical scheme: an intelligent gear pump capable of adjusting end face clearance comprises a pump body device and an intelligent control system, wherein the pump body device is composed of a pump body, a front end cover, a rear end cover, a driving shaft, a driven shaft, a driving wheel, a driven wheel and a sliding bearing, and the intelligent control system is composed of an ultrasonic probe and a piezoelectric ceramic gasket which are connected with a data processing control device through a control circuit; the upper end and the lower end of the pump body are respectively connected with the front end cover and the rear end cover, the upper end of the driving shaft is connected with the upper end of the front end cover in a penetrating manner, the lower end of the driving shaft is arranged in a pump body cavity of the pump body in parallel with the driven shaft, the driving wheel and the driven wheel are meshed and connected and are respectively matched and connected with the driving shaft and the driven shaft which are positioned in the middle of the pump body cavity, and the driving shaft and the driven shaft which are positioned in the pump body cavity are also matched and connected with the sliding bearing; the ultrasonic probe is connected in the sliding bearing, the sliding bearing is connected with the front end cover and the rear end cover through the piezoelectric ceramic gasket, the ultrasonic probe is connected with the outside through a control circuit, the data processing control equipment detects the distance between the transmission end faces, and the data processing control equipment is connected with the piezoelectric ceramic gasket to control the adjustment of the distance.
The data processing control equipment comprises an ultrasonic wave transmitting/receiving device, a computer and a voltage controller, wherein the ultrasonic wave probe is connected with the ultrasonic wave transmitting/receiving device through a control circuit, the piezoelectric ceramic gasket is connected with the voltage controller through a control circuit, and the computer is used as a calculation transmission medium and is respectively connected with the ultrasonic wave transmitting/receiving device and the voltage controller.
The end part of the sliding bearing is axially provided with an internal thread hole, the lower end of the ultrasonic probe is provided with an external thread which is matched and connected with the internal thread hole, and the ultrasonic probe is arranged in each sliding bearing and is at least provided with one and connected with the sliding bearing in a threaded matching way.
The end part of the sliding bearing is radially provided with a wire groove, the wire groove is vertically communicated with the internal thread hole, and a control circuit connected with the ultrasonic probe and the piezoelectric ceramic gasket is connected with external data processing control equipment through the wire groove.
The sliding bearings are provided with four, are located the action wheel with from the upper and lower both ends of driving shaft with all the cooperation is connected with one on the driven shaft the sliding bearing, four the sliding bearing is respectively including being located both ends about the action wheel and with first sliding bearing and the second sliding bearing that the driving shaft cooperation is connected, and be located both ends about the driven wheel and with third sliding bearing and fourth sliding bearing that the driven shaft cooperation is connected.
Be located same die cavity up end first slide bearing with third slide bearing and be located terminal surface under the same die cavity second slide bearing with excircle contact surface between the fourth slide bearing all sets up to vertical plane, and excircle contact surface is the plane connection of closely laminating.
The piezoelectric ceramic gaskets correspond to the four sliding bearings, the piezoelectric ceramic gaskets are annular and located on the same end face, and the piezoelectric ceramic gaskets correspond to the two sliding bearings on the same end face respectively.
The invention has the beneficial effects that: 1) according to the invention, the ultrasonic probe is adopted to acquire the clearance information of the end face, and the ultrasonic probe is connected in the sliding bearing in a built-in manner, so that the purpose of remote real-time online monitoring can be realized, the problem that the performance of the gear pump in the service process cannot be evaluated is solved, the oil film thickness between the gear and the sliding bearing can be calculated according to the ultrasonic probe, the clearance information can be controlled in time, the leakage and abrasion problems can be accurately predicted, measures can be taken in time, and the working performance of the gear pump can be improved.
2) The invention adopts the structural form that the piezoelectric ceramic gasket is matched with the ultrasonic probe for use, the piezoelectric ceramic gasket is connected on the contact surface of the sliding bearing and the end cover, and when the size of the gap and the thickness of the oil film are abnormally changed, the axial distance between the gear and the sliding bearing can be adjusted by changing the thickness of the piezoelectric ceramic gasket, so that the precise regulation and control of the end surface gap and the thickness of the oil film are realized, the noise is reduced, the abrasion is reduced, and the service life of the gear pump is prolonged.
3) The intelligent control system comprises the built-in ultrasonic probe, the piezoelectric ceramic gasket and the external data processing control equipment, the ultrasonic probe and the piezoelectric ceramic gasket can be used for a long time, the performance is stable, the purpose of monitoring and adjusting the clearance in real time on line can be achieved, the gear pump can be prevented from being frequently disassembled and assembled, the service life of the gear pump is prolonged, and the use and maintenance cost is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic structural diagram of the connection of the sliding bearing, the piezoelectric ceramic pad and the ultrasonic probe in FIG. 1;
fig. 3 is a schematic structural view of the ultrasonic probe in fig. 2 provided with two ultrasonic probes.
In the figure, 1-pump body, 2-front end cover, 3-rear end cover, 4-driving shaft, 5-driven shaft, 6-driving wheel, 7-driven wheel, 8-sliding bearing, 801-first sliding bearing, 802-second sliding bearing, 803-third sliding bearing, 804-fourth sliding bearing, 9-ultrasonic probe, 10-piezoelectric ceramic gasket, 11-internal threaded hole, 12-external thread, 13-wire groove and 14-vertical plane.
Detailed Description
The invention is further explained below with reference to the figures and the embodiments.
Example (b): as shown in fig. 1 and 2, the intelligent gear pump with adjustable end face clearance comprises a pump body device and an intelligent control system, wherein the pump body device comprises a pump body 1, a front end cover 2, a rear end cover 3, a driving shaft 4, a driven shaft 5, a driving wheel 6, a driven wheel 7 and a sliding bearing 8, and the intelligent control system comprises an ultrasonic probe 9 and a piezoelectric ceramic gasket 10 which are connected with a data processing control device through a control circuit; the upper end and the lower end of a pump body 1 are respectively connected with a front end cover 2 and a rear end cover 3, the upper end of a driving shaft 4 is connected with the upper end and the lower end of the front end cover 2 in parallel with a driven shaft 5 and is arranged in a pump body cavity of the pump body 1, a driving wheel 6 and a driven wheel 7 are meshed and connected with the driving shaft 4 and the driven shaft 5 which are positioned in the middle of the pump body cavity in a matching way and are respectively connected with the driving shaft 4 and the driven shaft 5, and the driving shaft 4 and the driven shaft 5 which are positioned in the pump body cavity are also connected with a sliding bearing 8 in a matching way; the ultrasonic probe 9 is connected in the sliding bearing 8, the sliding bearing 8 is connected with the front end cover 2 and the rear end cover 3 through the piezoelectric ceramic gasket 10, the ultrasonic probe 9 is connected with an external data processing control device through a control circuit to detect the distance between the transmission end faces, and the ultrasonic probe is connected with the piezoelectric ceramic gasket 10 through the data processing control device to control the adjustment of the distance.
The data processing control equipment comprises an ultrasonic wave transmitting/receiving device, a computer and a voltage controller, wherein the ultrasonic wave probe 9 is connected with the ultrasonic wave transmitting/receiving device through a control circuit, the piezoelectric ceramic gasket 10 is connected with the voltage controller through the control circuit, and the computer is used as a calculation transmission medium and is respectively connected with the ultrasonic wave transmitting/receiving device and the voltage controller.
The internal thread hole 11 has been attacked to slide bearing 8's tip axial, and the external screw thread 12 of being connected with the internal thread hole 11 cooperation is attacked to ultrasonic transducer 9's lower extreme, and ultrasonic transducer 9 sets up one at least and connects through screw-thread fit in every slide bearing 8's inside, and the thickness that ultrasonic transducer 9 measured when setting up two is average, and the data that obtain are more accurate.
The wire casing 13 has radially been seted up to slide bearing 8's tip, and wire casing 13 communicates with internal thread hole 11 is perpendicular, and the control scheme of being connected with ultrasonic transducer 9 and piezoceramics gasket 10 all is connected with outside data processing controlgear through wire casing 13.
Slide bearing 8 is provided with four, all the cooperation is connected with a slide bearing 8 on being located driving wheel 6 and driven driving shaft 4 and the driven shaft 5 at 7 upper and lower both ends of wheel, and four slide bearings 8 are respectively including being located driving wheel 6 upper and lower both ends and the first slide bearing 801 and the second slide bearing 802 of being connected with driving shaft 4 cooperation to and be located driven wheel 7 upper and lower both ends and the third slide bearing 803 and the fourth slide bearing 804 of being connected with driven shaft 5 cooperation.
The excircle contact surfaces between the first sliding bearing 801 and the third sliding bearing 803 which are positioned on the upper end surface of the same cavity and the second sliding bearing 802 and the fourth sliding bearing 804 which are positioned on the lower end surface of the same cavity are both arranged to be vertical planes 14, and the excircle contact surfaces are in plane close fit connection.
The number of the piezoelectric ceramic gaskets 10 corresponding to the sliding bearings 8 is four, the piezoelectric ceramic gaskets 10 are annular, and the two piezoelectric ceramic gaskets 10 located on the same end face are respectively arranged corresponding to the two sliding bearings 8 on the same end face.
The working principle is as follows: when the ultrasonic probe is used, the ultrasonic probe 9 is screwed into the internal thread hole 11 on the sliding bearing 8, the placing mode is shown in detail in figure 2, the piezoelectric ceramic gasket 10 is respectively clamped between the sliding bearing 8 and the front end cover 2 and the rear end cover 3, and the whole internal structure of the gear pump is shown in figure 1.
When the driving wheel 6 rotates, the driven wheel 7 is driven to rotate, and therefore the pumping pressure effect is achieved. At this time, the driven wheel 7 and the driving wheel 6 are worn away from the sliding bearing 8, which may increase the clearance between the driven wheel 7 and the driving wheel 6 and the sliding bearing 8, resulting in serious leakage.
The ultrasonic probe 3 placed in the sliding bearing 8 at this time returns the thickness information to the signal acquisition and control system by monitoring the change of the oil film thickness between the driven wheel 7, the driving wheel 6 and the sliding bearing 8.
The thickness of the oil film is calculated according to ultrasonic waves, a resonance model is adopted, and the thickness and the characteristics of the thickness layer can be calculated by measuring the ultrasonic resonance condition of the thickness layer. The resonance point is a minimum point in the ultrasonic reflection coefficient spectrogram.
The oil film thickness calculation formula is as follows: h = (c × m)/(2 × fm), wherein h is the oil film thickness, c is the speed of sound propagation in the medium, m is the resonance order of the sound wave, and fm is the frequency at which m resonances occur; in general, m is 1 in measurement, and the calculation is simple, and the corresponding frequency f1 is the minimum resonance frequency of the oil film. Since the attenuation of the sound wave increases sharply with increasing frequency, the attenuation of the sound wave is strong at too high a frequency, and the transducer frequency used for the measurement does not exceed 100MHz in general.
The ultrasonic wave transmitting/receiving device receives signals and controls voltage to drive the piezoelectric ceramic gasket 10 through the voltage controller, so that the piezoelectric ceramic gasket 10 generates an inverse piezoelectric effect, the piezoelectric ceramic generates deformation axial displacement, and the axial thickness is changed; when the piezoelectric ceramic gasket 10 generates axial displacement, the sliding bearing 8 is pushed so as to adjust the clearance between the sliding bearing 8 and the driven wheel 7 and the driving wheel 6 and the thickness of an oil film. Thus, the functions of oil film thickness monitoring and end surface abrasion clearance compensation for automatically adjusting the thickness of the oil film are realized.
According to the invention, the ultrasonic probe is adopted to acquire the gap information of the feedback end surface, the ultrasonic probe is connected in the sliding bearing in a built-in mode, and the oil film thickness between the gear and the sliding bearing is measured through the ultrasonic probe, so that the purpose of monitoring the size of the end surface gap and the oil film thickness on line is realized, the problem that the size of the gap and the thickness of the oil film in the gap cannot be known when the end surface gap is adjusted in the prior art, so that the leakage and abrasion amount cannot be accurately predicted according to the oil film thickness is solved, the gap and abrasion problems can be mastered in time, and the working performance of the gear pump is improved.
According to the invention, the piezoelectric ceramic gasket is connected to the contact surface of the sliding bearing and the end cover in a structural form of matching the piezoelectric ceramic gasket and the ultrasonic probe, and when the size of the gap and the thickness of the oil film are abnormally changed, the axial distance between the gear and the sliding bearing can be adjusted by changing the thickness of the piezoelectric ceramic gasket, so that the precise regulation and control of the end surface gap and the thickness of the oil film are realized, the noise is reduced, the abrasion is reduced, and the service life of the gear pump is prolonged.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (6)

1. An intelligent gear pump capable of adjusting end face clearance comprises a pump body device, wherein the pump body device consists of a pump body (1), a front end cover (2), a rear end cover (3), a driving shaft (4), a driven shaft (5), a driving wheel (6), a driven wheel (7) and a sliding bearing (8), the upper end and the lower end of the pump body (1) are respectively connected with the front end cover (2) and the rear end cover (3), the upper end of the driving shaft (4) is connected with the upper end and the lower end of the front end cover (2) in a penetrating way and is arranged in a pump body cavity of the pump body (1) in parallel with the driven shaft (5), the driving wheel (6) and the driven wheel (7) are meshed and connected and are respectively matched and connected with the driving shaft (4) and the driven shaft (5) which are positioned in the middle of the pump body cavity, and the driving shaft (4) and the driven shaft (5) which are positioned in the pump body cavity are also matched and connected with the sliding bearing (8); the method is characterized in that: the intelligent control system is formed by connecting an ultrasonic probe (9) and a piezoelectric ceramic gasket (10) with data processing control equipment through a control circuit;
the ultrasonic probe (9) is connected inside the sliding bearing (8), the sliding bearing (8) is connected with the front end cover (2) and the rear end cover (3) through the piezoelectric ceramic gasket (10), the ultrasonic probe (9) is connected with external data processing control equipment through a control circuit to detect and transmit an end surface gap, and the ultrasonic probe is connected with the piezoelectric ceramic gasket (10) through the data processing control equipment to control and adjust the size of the end surface gap;
the data processing control equipment comprises an ultrasonic wave transmitting/receiving device, a computer and a voltage controller, wherein the ultrasonic wave probe (9) is connected with the ultrasonic wave transmitting/receiving device through a control circuit, the piezoelectric ceramic gasket (10) is connected with the voltage controller through a control circuit, and the computer is used as a computer transmission medium and is respectively connected with the ultrasonic wave transmitting/receiving device and the voltage controller;
the ultrasonic wave transmitting/receiving device receives signals and controls voltage through the voltage controller to drive the piezoelectric ceramic gasket (10), the piezoelectric ceramic gasket (10) generates an inverse piezoelectric effect, the piezoelectric ceramic gasket generates deformation axial displacement to push the sliding bearing (8), and therefore end face gaps between the sliding bearing (8) and the driven wheel (7) and the driving wheel (6) are adjusted.
2. The intelligent gear pump with adjustable end face clearance of claim 1, wherein: the tip axial of slide bearing (8) is provided with internal thread hole (11), the lower extreme of ultrasonic transducer (9) be provided with external screw thread (12) that internal thread hole (11) cooperation is connected, the tip of slide bearing (8) radially is provided with wire casing (13), wire casing (13) with internal thread hole (11) communicate perpendicularly, with ultrasonic transducer (9) with the control scheme that piezoceramics gasket (10) are connected all passes through wire casing (13) and outside data processing controlgear connects.
3. The intelligent gear pump with adjustable end face clearance of claim 2, wherein: ultrasonic probe (9) are every the inside symmetry of slide bearing (8) is provided with two and through screw-thread fit connection, internal thread hole (11) with wire casing (13) all with ultrasonic probe (9) correspond and are provided with two.
4. The intelligent gear pump with adjustable end face clearance according to claim 1 or 2, characterized in that: slide bearing (8) are provided with four, are located action wheel (6) with from the upper and lower both ends of driving wheel (7) driving shaft (4) with all the cooperation is connected with one on driven shaft (5) slide bearing (8), four slide bearing (8) are respectively including being located from the upper and lower both ends of action wheel (6) and with first slide bearing (801) and second slide bearing (802) that driving shaft (4) cooperation is connected, and be located from the upper and lower both ends of driving wheel (7) and with third slide bearing (803) and fourth slide bearing (804) that driven shaft (5) cooperation is connected.
5. The intelligent gear pump with adjustable end face clearance of claim 4, wherein: be located same pump body die cavity up end first slide bearing (801) with third slide bearing (803) and be located same pump body die cavity down the terminal surface second slide bearing (802) with excircle contact surface between fourth slide bearing (804) all sets up to vertical plane (14), and is the inseparable laminating connection in plane between the excircle contact surface.
6. The intelligent gear pump with adjustable end face clearance of claim 4, wherein: piezoelectric ceramic gasket (10) correspond slide bearing (8) are provided with four, piezoelectric ceramic gasket (10) are ring shape, and are located two on the same terminal surface piezoelectric ceramic gasket (10) are corresponding to two on the same terminal surface respectively slide bearing (8) set up.
CN202110159485.9A 2021-02-05 2021-02-05 Intelligent gear pump with adjustable end face clearance Active CN112833006B (en)

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Application Number Priority Date Filing Date Title
CN202110159485.9A CN112833006B (en) 2021-02-05 2021-02-05 Intelligent gear pump with adjustable end face clearance

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Application Number Priority Date Filing Date Title
CN202110159485.9A CN112833006B (en) 2021-02-05 2021-02-05 Intelligent gear pump with adjustable end face clearance

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CN112833006B true CN112833006B (en) 2022-07-01

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03127092U (en) * 1990-03-30 1991-12-20
CN101458332A (en) * 2009-01-09 2009-06-17 华南师范大学 Ultrasonic ranging method and system thereof
CN101704364A (en) * 2009-11-19 2010-05-12 浙江大学 Real-time monitoring and automatic regulating system of automotive brake clearance
CN202083322U (en) * 2011-05-13 2011-12-21 宝山钢铁股份有限公司 Measurement device for thrust bearing clearances of phosphorus removal pump
CN112268530A (en) * 2020-11-18 2021-01-26 华南理工大学 Gear pump and end face clearance dynamic measurement test device and method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03127092U (en) * 1990-03-30 1991-12-20
CN101458332A (en) * 2009-01-09 2009-06-17 华南师范大学 Ultrasonic ranging method and system thereof
CN101704364A (en) * 2009-11-19 2010-05-12 浙江大学 Real-time monitoring and automatic regulating system of automotive brake clearance
CN202083322U (en) * 2011-05-13 2011-12-21 宝山钢铁股份有限公司 Measurement device for thrust bearing clearances of phosphorus removal pump
CN112268530A (en) * 2020-11-18 2021-01-26 华南理工大学 Gear pump and end face clearance dynamic measurement test device and method thereof

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