CN105179196A - Constant-pressure liquid injection device - Google Patents
Constant-pressure liquid injection device Download PDFInfo
- Publication number
- CN105179196A CN105179196A CN201510679211.7A CN201510679211A CN105179196A CN 105179196 A CN105179196 A CN 105179196A CN 201510679211 A CN201510679211 A CN 201510679211A CN 105179196 A CN105179196 A CN 105179196A
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- pump
- push rod
- constant voltage
- motor
- topping
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Abstract
The invention discloses and provides a constant-pressure liquid injection device which is simple in structure, convenient to use and long in service life, and can be utilized for conveying a cleaning solution to a biochemical analyzer at a constant speed with a high degree of accuracy. The constant-pressure liquid injection device comprises a shell (1) as well as a motor (2), a gear transmission mechanism, a gear rack transmission mechanism and a liquid inject pump (3) which are separately arranged in the shell (1); the output end of the motor (2) is connected with the liquid injection pump (3) through the gear transmission mechanism and the gear rack transmission mechanism in sequence. The constant-pressure liquid injection device is applicable to the field of internal injection for full-automatic biochemical analyzers.
Description
Technical field
The present invention relates to a kind of constant voltage priming device.
Background technique
In automatic clinical chemistry analyzer, automatic injector all can be adopted to carry out the cleaning solution used required for supply analysis instrument.Automatic injector in the past depends merely on the push rod driving that motor connects injector, in the process of injection, injector often can not inject cleaning solution with speed that is constant, that be applicable in ANALYZER, make precision when injecting uncontrollable, simultaneously, because the output shaft of motor and the push rod of injector directly contact, when after use a period of time, how gap is there is afterwards in the contacting point of push rod and inject cartriage due to rubbed, its operating error can be made so larger and uncontrollable, thus have a strong impact on injection precision and the working life of injector.
Summary of the invention
Technical problem to be solved by this invention overcomes the deficiencies in the prior art, provide a kind of structure simple, reasonable in design, easy to use can with highi degree of accuracy and the constant speed constant voltage priming device to Biochemical Analyzer transport cleaning liquid.
The technical solution adopted in the present invention is: the present invention includes housing and be separately positioned on motor, gear drive, rack and pinion drive mechanism and the topping-up pump in described housing, the output terminal of described motor is connected with described topping-up pump by described gear drive and described rack and pinion drive mechanism successively.
Described rack and pinion drive mechanism comprises rotating shaft and tooth bar, described rotating shaft is vertically arranged on the side of described motor, described rotating shaft is provided with and turns tooth, described tooth bar is meshed with the described tooth that turns, the end of described tooth bar is connected with the input end of described topping-up pump, and the input end of described topping-up pump can through the length direction to-and-fro motion of the drive of described end along described topping-up pump.
Described gear drive comprises canine tooth wheel disc and driving wheel, and described canine tooth wheel disc level is fixedly mounted on the top of described rotating shaft, and described driving wheel fixed cover is located on the output terminal of described motor, and described canine tooth wheel disc intermeshes with described driving wheel and is connected.
Described topping-up pump comprises the cylindrical circular pump housing and fluid push rod, fluid injection chamber is provided with along its length in the described pump housing, described fluid injection chamber and described fluid push rod suitable, described fluid push rod is arranged in described fluid injection chamber, and the tail end of described fluid push rod is connected with the end of described tooth bar.
Also Seal cage is provided with in the described pump housing, described Seal cage is arranged on the end in described fluid injection chamber, T-shaped stuffing box gland, fixed cover and seal washer is disposed with in described Seal cage, described T-shaped stuffing box gland, described fixed cover and described seal washer to be set in all successively on described fluid push rod and to be slidably matched with described fluid push rod, also screw thread is provided with strengthening sleeve in described Seal cage, the lower end surface of the alar part of described T-shaped stuffing box gland is withstood at the top of described strengthening sleeve, and described fixed cover and described seal washer are all arranged on the inside of described strengthening sleeve.
Also liquid outlet is provided with in the described pump housing, described liquid outlet is arranged on the head end in described fluid injection chamber and is connected with external infusion mouth, the maximum diameter of described liquid outlet is less than the diameter in described fluid injection chamber, and described transfusion mouth is connected with the infusion connecting tube on the sidewall being arranged on described housing.
Described motor is constant speed motor.
The invention has the beneficial effects as follows: in the present invention, canine tooth wheel disc is driven with constant speed motor owing to have employed, gearwheel dribbling is moved and rotating shaft is turned tooth, turn cingulum carry-over bar, finally promote cleaning solution by the fluid push rod of rack drives topping-up pump with constant speed, bulk velocity is determined by constant speed motor, and middle kinetic energy loss is little, thus can realize the Liquid transfer of constant speed;
Again owing to being provided with the T-shaped stuffing box gland, fixed cover and the seal washer that are set in fluid push rod periphery successively in the Seal cage of topping-up pump, be provided with strengthening sleeve again to withstand the alar part of T-shaped stuffing box gland, so when fluid push rod carries out work, can ensure to ensure that the pressure in fluid injection chamber remains unchanged while cleaning solution does not leak, thus make the precision of fluid injection higher.
Accompanying drawing explanation
Fig. 1 is schematic perspective view of the present invention;
Fig. 2 is internal structure schematic diagram of the present invention;
Fig. 3 is internal structure schematic diagram of the present invention;
Fig. 4 is internal structure planing surface schematic diagram of the present invention;
Fig. 5 is the enlarged diagram of A in Fig. 4.
Embodiment
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, the present invention includes housing 1 and be separately positioned on motor 2, gear drive, rack and pinion drive mechanism and the topping-up pump 3 in described housing 1, the output terminal of described motor 2 is connected with described topping-up pump 3 by described gear drive and described rack and pinion drive mechanism successively.
Described gear drive comprises canine tooth wheel disc 41 and driving wheel 45, described canine tooth wheel disc 41 level is fixedly mounted on the top of described rotating shaft 42, described driving wheel 45 fixed cover is located on the output terminal of described motor 2, and described canine tooth wheel disc 41 intermeshes with described driving wheel 45 and is connected.Described rack and pinion drive mechanism comprises rotating shaft 42 and tooth bar 43, described rotating shaft 42 is vertically arranged on the side of described motor 2, described rotating shaft 42 is provided with and turns tooth 44, the teeth portion of described tooth bar 43 is intermeshed be connected with the described tooth 44 that turns, the end 431 of described tooth bar 43 is connected with the input end of described topping-up pump 3, the band action through described end 431 of the input end of described topping-up pump 3, along the to-and-fro motion on the length direction of described topping-up pump 3, can carry out auto-compensation motion.
Described topping-up pump 3 comprises the cylindrical circular pump housing 31 and fluid push rod 32, fluid injection chamber 311 is provided with along its length in the described pump housing 31, described fluid injection chamber 311 is suitable with described fluid push rod 32, described fluid push rod 32 is arranged in described fluid injection chamber 311, and the tail end of described fluid push rod 32 is connected with the end 431 of described tooth bar 43.
Seal cage 313 is also provided with in the described pump housing 31, described Seal cage 313 is arranged on the end in described fluid injection chamber 311, T-shaped stuffing box gland 61 is disposed with in described Seal cage 313, fixed cover 62 and seal washer 63, described T-shaped stuffing box gland 61, described fixed cover 62 and described seal washer 63 to be set in all successively on described fluid push rod 32 and to be slidably matched with described fluid push rod 32, also screw thread is provided with strengthening sleeve 64 in described Seal cage 313, the lower end surface of the alar part of described T-shaped stuffing box gland 61 is withstood at the top of described strengthening sleeve 64, described fixed cover 62 and described seal washer 63 are all arranged on the inside of described strengthening sleeve 64.Described T-shaped stuffing box gland 61, described fixed cover 62 and described seal washer 63 are all elastic material, so can play certain buffer function at work, to improve overall injection precision.
Liquid outlet 312 is also provided with in the described pump housing 31, described liquid outlet 312 is arranged on the head end in described fluid injection chamber 311 and is connected with external infusion mouth 51, the maximum diameter of described liquid outlet 312 is less than the diameter in described fluid injection chamber 311, and described transfusion mouth 51 is connected with the infusion connecting tube 52 on the sidewall being arranged on described housing 1.
Described motor 2 is constant speed motor.
Working principle:
Time static, described fluid push rod 32 entirety coordinates completely and is placed in described fluid injection chamber 311, automatic clinical chemistry analyzer controls described constant speed motor 2 and starts, and then drive described driving wheel 45 to rotate to drive described canine tooth wheel disc 41 with the constant speed counterclockwise set, simultaneously, describedly turn tooth 44 also along with described rotating shaft 42 is with the rotational speed same with described canine tooth wheel disc 41, and then drive described tooth bar 43 to move right with constant velocity level, and then drive described fluid push rod 32 to move right with constant velocity level, now inside, described fluid injection chamber 311 is similar to by described fluid push rod 32 and vacuumizes action, build-up of pressure is poor, so make described External infusion liquid feedway by described safety check to delivery injection liquid in described fluid injection chamber 311.When the tip motions of described fluid push rod 32 is to the low order end in described fluid injection chamber 311, described parenteral solution is filled in described fluid injection chamber 311, described constant speed motor 2 stops, then clockwise constant revolution is made, then described fluid push rod 32 is driven with constant speed to left movement, and then carried to described liquid outlet 312 with constant speed by described parenteral solution, and then described parenteral solution is made to be injected to the inner suitable position of described automatic clinical chemistry analyzer with constant speed by described external infusion mouth 51.
The present invention is applicable to automatic clinical chemistry analyzer internal injection field.
Claims (7)
1. a constant voltage priming device, it is characterized in that: described constant voltage priming device comprises housing (1) and is separately positioned on motor (2), gear drive, rack and pinion drive mechanism and the topping-up pump (3) in described housing (1), the output terminal of described motor (2) is connected with described topping-up pump (3) by described gear drive and described rack and pinion drive mechanism successively.
2. constant voltage priming device according to claim 1, it is characterized in that: described rack and pinion drive mechanism comprises rotating shaft (42) and tooth bar (43), described rotating shaft (42) is vertically arranged on the side of described motor (2), described rotating shaft (42) is provided with and turns tooth (44), described tooth bar (43) is meshed with the described tooth (44) that turns, the end (431) of described tooth bar (43) is connected with the input end of described topping-up pump (3), the input end of described topping-up pump (3) can through the length direction to-and-fro motion of the drive of described end (431) along described topping-up pump (3).
3. constant voltage priming device according to claim 2, it is characterized in that: described gear drive comprises canine tooth wheel disc (41) and driving wheel (45), described canine tooth wheel disc (41) level is fixedly mounted on the top of described rotating shaft (42), described driving wheel (45) fixed cover is located on the output terminal of described motor (2), and described canine tooth wheel disc (41) is intermeshed with described driving wheel (45) and is connected.
4. constant voltage priming device according to claim 2, it is characterized in that: described topping-up pump (3) comprises the cylindrical circular pump housing (31) and fluid push rod (32), fluid injection chamber (311) is provided with along its length in the described pump housing (31), described fluid injection chamber (311) is suitable with described fluid push rod (32), described fluid push rod (32) is arranged in described fluid injection chamber (311), and the tail end of described fluid push rod (32) is connected with the end (431) of described tooth bar (43).
5. constant voltage priming device according to claim 4, it is characterized in that: in the described pump housing (31), be also provided with Seal cage (313), described Seal cage (313) is arranged on the end of described fluid injection chamber (311), T-shaped stuffing box gland (61) is disposed with in described Seal cage (313), fixed cover (62) and seal washer (63), described T-shaped stuffing box gland (61), described fixed cover (62) and described seal washer (63) are set in described fluid push rod (32) all successively and go up and be slidably matched with described fluid push rod (32), also screw thread is provided with strengthening sleeve (64) in described Seal cage (313), the lower end surface of the alar part of described T-shaped stuffing box gland (61) is withstood at the top of described strengthening sleeve (64), described fixed cover (62) and described seal washer (63) are all arranged on the inside of described strengthening sleeve (64).
6. constant voltage priming device according to claim 4, it is characterized in that: in the described pump housing (31), be also provided with liquid outlet (312), described liquid outlet (312) is arranged on the head end of described fluid injection chamber (311) and is connected with external infusion mouth (51), the maximum diameter of described liquid outlet (312) is less than the diameter of described fluid injection chamber (311), and described transfusion mouth (51) is connected with the infusion connecting tube (52) on the sidewall being arranged on described housing (1).
7. constant voltage priming device according to claim 1, is characterized in that: described motor (2) is constant speed motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510679211.7A CN105179196A (en) | 2015-10-20 | 2015-10-20 | Constant-pressure liquid injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510679211.7A CN105179196A (en) | 2015-10-20 | 2015-10-20 | Constant-pressure liquid injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105179196A true CN105179196A (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510679211.7A Pending CN105179196A (en) | 2015-10-20 | 2015-10-20 | Constant-pressure liquid injection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105179196A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673384A (en) * | 2016-02-03 | 2016-06-15 | 龙木信息科技（杭州）有限公司 | Single-pipe and double-cavity injection pump mechanism with double motors |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1909540A1 (en) * | 1969-02-26 | 1970-09-17 | Dibbern Dr Rer Nat Hans Werner | Microdosing device |
| CN2139179Y (en) * | 1992-05-21 | 1993-07-28 | 北京市西城区新开通用试验厂 | High-pressure plunger pump with numerically controlled power driver |
| CN2585236Y (en) * | 2002-08-29 | 2003-11-05 | 江西特康科技有限公司 | Plunger-type syringe sealing structure of haemocytes analyzer |
| CN201621047U (en) * | 2010-01-18 | 2010-11-03 | 大庆森恩浦机械制造有限公司 | Straight line driving pump |
| CN202176472U (en) * | 2011-07-22 | 2012-03-28 | 苏州海力电器有限公司 | Power device used for water pump |
| WO2012084033A1 (en) * | 2010-12-22 | 2012-06-28 | Henri Lescher | Micropump assembly |
| CN203925928U (en) * | 2014-06-24 | 2014-11-05 | 史曙光 | A kind of mechanical compression is measured, automatic stop gas-filled pump system |
| CN205047382U (en) * | 2015-10-20 | 2016-02-24 | 珠海森龙生物科技有限公司 | Constant voltage priming device |
-
2015
- 2015-10-20 CN CN201510679211.7A patent/CN105179196A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1909540A1 (en) * | 1969-02-26 | 1970-09-17 | Dibbern Dr Rer Nat Hans Werner | Microdosing device |
| CN2139179Y (en) * | 1992-05-21 | 1993-07-28 | 北京市西城区新开通用试验厂 | High-pressure plunger pump with numerically controlled power driver |
| CN2585236Y (en) * | 2002-08-29 | 2003-11-05 | 江西特康科技有限公司 | Plunger-type syringe sealing structure of haemocytes analyzer |
| CN201621047U (en) * | 2010-01-18 | 2010-11-03 | 大庆森恩浦机械制造有限公司 | Straight line driving pump |
| WO2012084033A1 (en) * | 2010-12-22 | 2012-06-28 | Henri Lescher | Micropump assembly |
| CN202176472U (en) * | 2011-07-22 | 2012-03-28 | 苏州海力电器有限公司 | Power device used for water pump |
| CN203925928U (en) * | 2014-06-24 | 2014-11-05 | 史曙光 | A kind of mechanical compression is measured, automatic stop gas-filled pump system |
| CN205047382U (en) * | 2015-10-20 | 2016-02-24 | 珠海森龙生物科技有限公司 | Constant voltage priming device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673384A (en) * | 2016-02-03 | 2016-06-15 | 龙木信息科技（杭州）有限公司 | Single-pipe and double-cavity injection pump mechanism with double motors |
| CN105673384B (en) * | 2016-02-03 | 2017-11-07 | 杭州科雷智能印刷科技有限责任公司 | A kind of bi-motor single-tube double-cavity injects pump machanism |
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Application publication date: 20151223 |
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