CN201628608U - Pressure generator - Google Patents

Pressure generator Download PDF

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Publication number
CN201628608U
CN201628608U CN2010201026595U CN201020102659U CN201628608U CN 201628608 U CN201628608 U CN 201628608U CN 2010201026595 U CN2010201026595 U CN 2010201026595U CN 201020102659 U CN201020102659 U CN 201020102659U CN 201628608 U CN201628608 U CN 201628608U
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CN
China
Prior art keywords
syringe
slide block
pressure
screw mandrel
pressure generator
Prior art date
Application number
CN2010201026595U
Other languages
Chinese (zh)
Inventor
张世忠
王学化
李玉滨
文廷辉
高建辉
潘海鹏
Original Assignee
青岛众瑞智能仪器有限公司
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Publication date
Application filed by 青岛众瑞智能仪器有限公司 filed Critical 青岛众瑞智能仪器有限公司
Priority to CN2010201026595U priority Critical patent/CN201628608U/en
Application granted granted Critical
Publication of CN201628608U publication Critical patent/CN201628608U/en

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Abstract

The utility model discloses a pressure generator, which can solve the problems in the prior art that the pressure output accuracy is low, and the manufacture cost is higher. The pressure generator adopts the technical scheme that a fixing device, a pressure regulation actuator, a transmission system and a sealed cavity are included, and the sealed cavity adopts an injector. The sealed cavity adopts the common injector to generate pressure rather than the original corrugated pipe sealed cavity structure, so that accurate and stable pressure can be generated, and the product cost is lowered at the same time.

Description

Pressure generator
Technical field
The utility model belongs to the metering and measuring equipment field, specifically, relates to a kind of pressure generator that can produce accurate pressure, is used for the measurement and calibration of pressure tool instrument.
Background technology
The used pressure generator of pressure measurement checkout equipment generally adopts motor movement to regulate the structure of annular seal space pressure by kinematic train now, motor shaft, kinematic train, annular seal space three center remain on the same axis, the power that motor produces, be delivered in the annular seal space by kinematic train, cause that the annular seal space volume changes, and then produce needed pressure.Owing to have foozle and rigging error, always there are certain deviation in motor shaft, kinematic train, annular seal space three center aspect right alignment, cause the motion of motor to be interfered, and have consumed motor power, produce big noise, influenced the accuracy of pressure generator output pressure.Structures such as annular seal space sylphon seal chamber commonly used, processing and manufacturing cost height; Kinematic train is used lead screw transmission usually, costs an arm and a leg; Increased the cost of pressure generator.
The utility model content
The utility model provides a kind of pressure generator, can solve the not high and manufacturing cost problem of higher of output pressure accuracy that prior art exists.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of pressure generator comprises stationary installation, pressure adjusting actuator, kinematic train and annular seal space, and described annular seal space adopts syringe.Adopt common syringe to replace original sylphon seal cavity configuration, reduced the processing and manufacturing cost as the annular seal space that produces pressure.
In the technical solution of the utility model, also have following technical characterictic:
Described stationary installation comprises fixed head, and the two ends of fixed head are provided with motor cabinet and track base;
Described pressure is regulated actuator and is adopted stepper motor, and stepper motor is fixed on the described motor cabinet;
Described kinematic train comprises screw mandrel, guide rail, slide block, described slide block is connected with wire rod thread, described guide rail passes described slide block, and the guide rail two ends are connected with track base with motor cabinet respectively, and described screw mandrel two ends are connected with track base with the motor shaft of described stepper motor respectively;
Described syringe, screw mandrel and guide rail are arranged in parallel, and syringe is positioned at the top of screw mandrel, and the piston of described syringe is fixedlyed connected with described slide block, and with described slide block movement, the syringe of syringe is connected on the described motor cabinet;
Stepper motor move through the straight-line displacement that screw mandrel is converted into slide block, the piston motion that drives syringe produces required pressure.
Further, described fixed head both sides are equipped with flute profile light idol, relative set light barrier on the described slide block.
Further, the syringe outside of described syringe is provided with syringe folder and syringe tray, and described syringe is fixedly connected on the described motor cabinet by this syringe folder, syringe tray.
Further, described guide rail is provided with two, and the junction of described slide block and guide rail is provided with linear ball bearing.
Further, be provided with shaft coupling between described screw mandrel and the described motor shaft.
Further, described screw mandrel and track base junction are provided with ball bearing.
Further, described syringe is the syringe-type syringe.
The syringe of syringe is fastened on the syringe tray, and syringe tray and motor cabinet tighten together, and motor cabinet and track base all are fastened on the fixed head, becomes as a whole; Two flute profile light idols are installed on the fixed head, a light barrier is installed on the correspondence position of slide block.The threaded engagement that moves through screw mandrel and slide block of motor is converted into the straight-line displacement campaign of slide block, drives the piston linear motion of syringe, can produce required pressure.Flute profile light even summation light barrier is used for determining the initial position and the final position of ram travel.
The utility model is used for the pressure measurement checkout equipment, the external pressure tool instrument of out splice going splice while of syringe and the pressure inductor in the pressure measurement checkout equipment.In the pressure measurement checkout equipment after the set pressure, processor sends a signal to stepper motor, and stepper motor rotates, and makes the piston of syringe do rectilinear motion by shaft coupling, screw mandrel, slide block, change the interior gaseous tension of syringe of syringe, and then export different pressure.
Compared with prior art, advantage of the present utility model and good effect are:
The utility model provides a kind of pressure measurement checkout equipment used pressure generator, can produce precise and stable pressure, has reduced cost of products simultaneously.
1, the output pressure accuracy improves: the syringe-type syringe as annular seal space is positioned at the screw mandrel top, with screw mandrel be parallel relation; Only need to guarantee certain machining precision, motor shaft, screw mandrel are remained on the same axis, the action of stepper motor can be delivered to the precise and stable pressure of generation on the syringe by screw mandrel, slide block, the flexibility characteristics of syringe itself requires to reduce to the depth of parallelism of injection ram and kinematic train, thereby has reduced the manufacturing accuracy requirement; Motor shaft, kinematic train, the annular seal space three center of comparing traditional pressure generator remain on the structure on the same axis, have reduced the cooperation deviation of kinematic train.
2, cost is low: adopt the syringe-type syringe as the annular seal space that produces pressure, need mach annular seal space with respect to sylphon seal chamber or other, cost is very cheap; The threaded engagement of utilizing screw mandrel and slide block is compared with leading screw commonly used the straight-line displacement for slide block of the conversion of motion of stepper motor with the cooperation of slide block, also greatly reduce cost.
3, flute profile light can be responded to the shift position of slide block by chance, defines the stroke of slide block, avoids having improved the self-protection function of pressure generator because of slide block exceeds stroke damage equipment.
Description of drawings
Fig. 1 is the sectional view of the utility model pressure generator;
Fig. 2 is the A-A cut-open view of Fig. 1;
Symbol among the figure and explanation thereof:
1, stepper motor; 1-1, motor shaft; 2, shaft coupling; 3, screw mandrel; 4, slide block; 5, ball bearing; 6, linear ball bearing; 7, syringe-type syringe; 7-1, piston; 7-2, syringe; 7-3, out splice going splice; 8, motor cabinet; 9, fixed head; 10, track base; 11, guide rail; 12, syringe tray; 13, syringe folder; 14, flute profile light idol; 15, light barrier.
Embodiment
Below in conjunction with the drawings and specific embodiments structure composition of the present utility model is described in further detail with principle of work.
Consult Fig. 1, Fig. 2, pressure generator comprises stepper motor 1, shaft coupling 2, screw mandrel 3, slide block 4, ball bearing 5, two linear ball bearings 6, syringe-type syringe 7, motor cabinet 8, fixed head 9, track base 10, two guide rails 11, syringe tray 12, two 13, two flute profile light idols 14 of syringe folder, light barrier 15.
Stepper motor 1 usefulness screw is fastened on the motor cabinet 8, and motor shaft 1-1 is fixedlyed connected with screw mandrel 3 one ends by shaft coupling 2; Screw mandrel 3 passes slide block 4, and 4 of screw mandrel 3 and slide blocks are threaded engagement, and screw mandrel 3 other ends are connected by ball bearing 5 and track base 10; Two guide rails 11 all put linear ball bearing 6 and cooperate with slide block 4, and slide block 4 can slide flexibly along guide rail 11, and guide rail 11 two ends are connected with track base 10 with motor cabinet 8 respectively; Syringe 7 is positioned at screw mandrel 3 tops, is parallel to screw mandrel 3, and the piston 7-1 and the slide block 4 of syringe 7 tighten together, and the syringe 7-2 of syringe 7 utilizes two syringe folders 13 to be fixed on the syringe tray 12; Syringe tray 12 tightens together with motor cabinet 8, and motor cabinet 8 and track base 10 all are fastened on the fixed head 9; Two flute profile light idol 14 also is installed on the fixed head 9, on the correspondence position of slide block 4, cooperates a light barrier 15 is installed, be used for positioning sliding block 4 positions.
The threaded engagement that moves through screw mandrel 3 and slide block 4 of stepper motor 1 is converted into the straight-line displacement campaign of slide block 4, drives the piston 7-1 rectilinear motion of syringe 7, can produce required pressure.Shaft coupling 2 can use spring coupling, can self-regulation motor axle 1-1 and the fine difference of screw mandrel 3 on right alignment.Flute profile light idol 14 can be responded to the position of light barrier 15, is used for determining the initial position and the final position of slide block 4 strokes.
The utility model is used for the pressure measurement checkout equipment, the out splice going splice 7-3 of syringe 7 is the pressure inductor in external pressure tool instrument and the pressure measurement checkout equipment simultaneously, and flute profile light idol 14 and stepper motor 1 all are connected with processor in the pressure measurement checkout equipment.After the set pressure, processor sends a signal to stepper motor 1 in the pressure measurement checkout equipment, and stepper motor 1 rotates, and is converted into the rectilinear motion of piston 7-1 by shaft coupling 2, screw mandrel 3, slide block 4, gas compression or expand and produce different pressure in the syringe 7-2.This pressure is delivered on external the pressure tool instrument and the pressure inductor in the pressure measurement checkout equipment by out splice going splice 7-3, the pressure signal transmission that pressure inductor obtains is in processor, processor makes the pressure of setting consistent with the actual pressure that produces according to the action of the pressure signal control step motor 1 that obtains.
During slide block 4 rectilinear motions, be installed in the also movement therewith of light barrier 15 on the slide block 4; When light barrier 15 moved to flute profile light idol 14 positions, flute profile light idol 14 produced signal and sends on the processor, and processor will stop the motion of stepper motor 1 or make stepper motor 1 counter motion, avoids damage equipment.
In the utility model, improve traditional motor shaft, kinematic train, annular seal space three center and remained on the structure on the same axis, to be put in the screw mandrel top as the syringe-type syringe of annular seal space, only need motor shaft, screw mandrel to remain on the same axis, reduced the cooperation deviation of kinematic train.Use syringe-type syringe and screw mandrel, reduced cost of products.Utilize flute profile light idol to limit the stroke range of slide block, help protection equipment.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection domain of the present utility model.

Claims (8)

1. a pressure generator comprises stationary installation, pressure adjusting actuator, kinematic train and annular seal space, and it is characterized in that: described annular seal space adopts syringe.
2. pressure generator according to claim 1 is characterized in that:
Described stationary installation comprises fixed head, and the two ends of fixed head are provided with motor cabinet and track base;
Described pressure is regulated actuator and is adopted stepper motor, and stepper motor is fixed on the described motor cabinet;
Described kinematic train comprises screw mandrel, guide rail, slide block, described slide block is connected with wire rod thread, described guide rail passes described slide block, and the guide rail two ends are connected with track base with motor cabinet respectively, and described screw mandrel two ends are connected with track base with the motor shaft of described stepper motor respectively;
Described syringe, screw mandrel and guide rail are arranged in parallel, and syringe is positioned at the top of screw mandrel, and the piston of described syringe is fixedlyed connected with described slide block, and with described slide block movement, the syringe of syringe is connected on the described motor cabinet;
Stepper motor move through the straight-line displacement that screw mandrel is converted into slide block, the piston motion that drives syringe produces required pressure.
3. pressure generator according to claim 2 is characterized in that: described fixed head both sides are equipped with flute profile light idol, relative set light barrier on the described slide block.
4. pressure generator according to claim 2 is characterized in that: the syringe outside of described syringe is provided with syringe folder and syringe tray, and described syringe is fixedly connected on the described motor cabinet by this syringe folder, syringe tray.
5. pressure generator according to claim 2 is characterized in that: described guide rail is provided with two, and the junction of described slide block and guide rail is provided with linear ball bearing.
6. pressure generator according to claim 2 is characterized in that: be provided with shaft coupling between described screw mandrel and the described motor shaft.
7. pressure generator according to claim 2 is characterized in that: described screw mandrel and track base junction are provided with ball bearing.
8. according to the described pressure generator of above-mentioned arbitrary claim, it is characterized in that: described syringe is the syringe-type syringe.
CN2010201026595U 2010-01-21 2010-01-21 Pressure generator CN201628608U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201026595U CN201628608U (en) 2010-01-21 2010-01-21 Pressure generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201026595U CN201628608U (en) 2010-01-21 2010-01-21 Pressure generator

Publications (1)

Publication Number Publication Date
CN201628608U true CN201628608U (en) 2010-11-10

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CN2010201026595U CN201628608U (en) 2010-01-21 2010-01-21 Pressure generator

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CN (1) CN201628608U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102968135A (en) * 2012-10-26 2013-03-13 北京众驰伟业科技发展有限公司 Microsample injection control system
CN103063479A (en) * 2012-12-28 2013-04-24 深圳市锦瑞电子有限公司 A conjoined injector and a blood cell analyzer having the conjoined injector
CN103913270A (en) * 2013-01-05 2014-07-09 上海朝辉压力仪器有限公司 Calibration device and operation method thereof
CN104062068A (en) * 2014-06-18 2014-09-24 中北大学 Step pressure generation method based on high-energy pulse laser device
CN105865608A (en) * 2016-06-13 2016-08-17 陕西理工学院 Full-automatic quadrangle calibration system for weighing sensors

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102968135A (en) * 2012-10-26 2013-03-13 北京众驰伟业科技发展有限公司 Microsample injection control system
CN103063479A (en) * 2012-12-28 2013-04-24 深圳市锦瑞电子有限公司 A conjoined injector and a blood cell analyzer having the conjoined injector
CN103063479B (en) * 2012-12-28 2015-09-23 深圳市锦瑞电子有限公司 Conjuncted syringe and there is the cellanalyzer of this syringe
CN103913270A (en) * 2013-01-05 2014-07-09 上海朝辉压力仪器有限公司 Calibration device and operation method thereof
CN104062068A (en) * 2014-06-18 2014-09-24 中北大学 Step pressure generation method based on high-energy pulse laser device
CN105865608A (en) * 2016-06-13 2016-08-17 陕西理工学院 Full-automatic quadrangle calibration system for weighing sensors

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Granted publication date: 20101110

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