CN203655594U - Stepless adjusting device for metering pump stroke - Google Patents
Stepless adjusting device for metering pump stroke Download PDFInfo
- Publication number
- CN203655594U CN203655594U CN201320707993.7U CN201320707993U CN203655594U CN 203655594 U CN203655594 U CN 203655594U CN 201320707993 U CN201320707993 U CN 201320707993U CN 203655594 U CN203655594 U CN 203655594U
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- CN
- China
- Prior art keywords
- metering pump
- rocking arm
- drive rod
- rod
- travel range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Reciprocating Pumps (AREA)
Abstract
The utility model relates to a stepless adjusting device for metering pump stroke. The stepless adjusting device comprises a stroke drive rod (10) of which one end is connected with a plunger of a metering pump, wherein the other end of the stroke drive rod (10) is connected with a rocker arm (9); one end of the rocker arm (9), away from the stroke drive rod (10), is connected with a push rod (2) which is in parallel with the stroke drive rod (10) and performs reverse reciprocating motion relative to the stroke drive rod (10); a through groove (9-1) is formed in the middle of the rocker arm (9) along an axial centre line, and a movable fulcrum part (9-2) is arranged in the through groove (9-1). By adopting the device provided by the utility model, the stoke of a drive mechanism of a submerged metering pump can be adjusted in a stepless mode, so that the output flow of the pump can be precisely adjusted within a certain range, the efficiency of the device is greatly improved, and the vulcanization of the device is more complete.
Description
Technical field
The utility model belongs to Reciprocating Metering Pump technical field, is specifically related to a kind of Metering Pump Stroke stepless regulator.
Background technique
Flow can step-less adjustment be one of key property of Reciprocating Metering Pump, and the Flow-rate adjustment of metering pump generally has two kinds of modes, the one, and the pump speed of change metering pump, the 2nd, the plunger stroke of change metering pump.Wherein, the mode that changes plunger stroke is used more extensive.In the structure of change plunger stroke, conventional form is the composite structure that eccentric shaft mechanism, linkage mechanism and offset controlling mechanism form, and the major defect of this structure is: member processing process complexity, output flow is unstable and adjust loaded down with trivial details.
In nuclear chemical industry engineering, defeated for some special feed liquids, need a kind of flow to export steadily, measure accurate small flow metering pump; Meanwhile, require metering pump can, according to the difference of every batch of feed concentration and operating conditions, carry out fine adjustment to pump feed flow at any time.Existing metering pump cannot meet above-mentioned usage requirement.
Model utility content
For the defect existing in prior art, the purpose of this utility model is to provide a kind of simple in structure, is convenient to regulate in real time online and regulate Metering Pump Stroke stepless regulator accurately.
For reaching above object, the technical solution adopted in the utility model is: a kind of Metering Pump Stroke stepless regulator, comprise the travel range drive rod being connected with the plunger of metering pump, the other end of travel range drive rod is connected with rocking arm, and one end away from travel range drive rod of rocking arm is connected with and is parallel to travel range drive rod and makes reverse reciprocating push rod with respect to travel range drive rod; The middle part of rocking arm vertically center line has the groove running through, and is provided with movably fulcrum in groove.
Further, described controlling device also comprises rocking arm fulcrum controlling mechanism, described rocking arm fulcrum controlling mechanism comprises and is located at the regulating handle of metering pump frame outside and is located at the screw rod that frame is inner and be connected with regulating handle, and screw rod stretches into part in frame and is sleeved on respect to screw rod and does in heterodromous screw sleeve; Screw sleeve outer circumferential face one side connects a support, and the respective side of screw sleeve outer circumferential face upper bracket is connected with slide block; The fulcrum of rocking arm is the bearing pin that is connected to described support lower side, and the longitudinal center line of bearing pin is vertical with the longitudinal center line of screw rod.
Further, the slide block on screw sleeve is located at the slide rail that is arranged in metering pump frame, the axial centre line parallel of the track of slide rail and screw rod.
Further, described push rod contacts with an eccentric cam profile away from one end of rocking arm, and eccentric cam is sleeved on by motor-driven rotating shaft.
Further, the end of rocking arm is connected by the concentric shafts of moving with rocking arm respectively with travel range drive rod, push rod end.
Adopt the device that provides of the utility model can step-less adjustment liquid under the stroke of metering pump driving mechanism, make the output flow of pump can carry out within the specific limits accurate adjustment.In nuclear chemical industry engineering, while carrying the metering pump of radioactivity feed liquid to be used in conjunction with by above-mentioned stroke stepless regulator and to vulcanization bed, can realize continuously, steadily carrying and the accurate adjusting of reduction of feed volume of radioactivity feed liquid, make sulfuration more complete, greatly improve the working efficiency of equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of mode of execution of a kind of Metering Pump Stroke stepless regulator of providing of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
As shown in Figure 1, a kind of Metering Pump Stroke stepless regulator provided by the utility model, comprise the travel range drive rod 10 being connected with the plunger (not shown) of metering pump, the other end of travel range drive rod 10 is connected with rocking arm 9, and one end away from travel range drive rod 10 of rocking arm 9 is connected with and is parallel to travel range drive rod 10 and makes reverse reciprocating push rod 2 with respect to travel range drive rod 10; The middle part of rocking arm 9 vertically center line has the groove 9-1 running through, and is provided with movably fulcrum 9-2 in groove 9-1, and the shape and structure of the shape and structure of fulcrum 9-2 and groove 9-1 adapts.
For ease of the position of the fulcrum 9-2 of adjusting rock arm 9, the utility model also comprises rocking arm fulcrum controlling mechanism.
In the embodiment shown in fig. 1, described rocking arm fulcrum controlling mechanism comprises and is located at the regulating handle 8 of metering pump frame 0 outside and is located at the screw rod 5 that frame 0 is inner and be connected with regulating handle 8, and screw rod 5 stretches into part in frame 0 and is sleeved on respect to screw rod 5 and does in heterodromous screw sleeve 4; Screw sleeve 4 outer circumferential face one sides connect a support 3, and the respective side of screw sleeve 4 outer circumferential face upper brackets 3 is connected with slide block 6; The fulcrum 9-2 of rocking arm 9 is the bearing pin that is connected to described support 3 lower side, and the free end of bearing pin is through groove 9-1 and adopt cotter pin to fix, and the longitudinal center line of bearing pin is vertical with the longitudinal center line of screw rod 5.
The utility model one preferred embodiment in, the slide block 6 on screw sleeve 4 is located at the slide rail 7 that is arranged in metering pump frame 0, the axial centre line parallel of the track of slide rail 7 and screw rod 5.
The utility model one preferred embodiment in, described push rod 2 can contact with eccentric cam 1 profile away from one end of rocking arm 10, eccentric cam 1 is sleeved on by motor-driven rotating shaft 11, drives push rod 2 to-and-fro motion like this by the rotation of eccentric cam 1.
In the utility model, the end of rocking arm 9 can be respectively by being connected with concentric shafts 12-1, the 12-2 of rocking arm 9 motions with the end of travel range drive rod 10, push rod 2.
Adopt this device to regulate the detailed process of Metering Pump Stroke as follows:
First make screw rod 5 rotations advance or retreat by regulating handle 8, the 4 direction reversing motions of advancing or retreating along screw rod 5 of drive screw cover, thereby drive the slide block 6 on screw sleeve 4 to move left and right along the track of slide rail 7, drive support 3 to move left and right simultaneously, the position of fulcrum 9-2 is changed, changed the size of L1 and L2, thereby the movement range that connects the travel range drive rod 10 of metering pump plunger changes because of the change of L1 and L2 size, even if change has occurred the flow of metering pump.
Power transmission principle is: the motor that connects metering pump rotates according to the rotating speed drive shaft 11 setting by retarder, drives eccentric cam 1 to rotate; There is upper and lower to-and-fro motion in push rod 2, thereby drive rocking arm 9 to swing take fulcrum 9-2 as axle under the rotation of eccentric cam 1, the Size dependence of the amplitude of swing and L1 and L2.There is upper and lower to-and-fro motion in travel range drive rod 10, thereby the plunger action of driven pump is gone out medium transport under the drive of rocking arm 9.
Above-described embodiment just illustrates of the present utility model, and the utility model also can be implemented with other special type or other particular form, and does not depart from main idea of the present utility model or substantive characteristics.Therefore, the mode of execution of description all should be considered as illustrative but not determinate from the viewpoint of any.Scope of the present utility model should illustrate by the claim of adding, and anyly also should be included in scope of the present utility model with the intention of claim and the variation of scope equivalence.
Claims (5)
1. a Metering Pump Stroke stepless regulator, comprise the travel range drive rod (10) that one end is connected with the plunger of metering pump, it is characterized in that, the other end of travel range drive rod (10) is connected with rocking arm (9), and one end away from travel range drive rod (10) of rocking arm (9) is connected with and is parallel to travel range drive rod (10) and makes reverse reciprocating push rod (2) with respect to travel range drive rod (10); The middle part of rocking arm (9) vertically center line has the groove (9-1) running through, and is provided with movably fulcrum (9-2) in groove (9-1).
2. a kind of Metering Pump Stroke stepless regulator according to claim 1, it is characterized in that, described controlling device also comprises rocking arm fulcrum controlling mechanism, described rocking arm fulcrum controlling mechanism comprises and is located at the outside regulating handle (8) of metering pump frame (0) and is located at the screw rod (5) that frame (0) is inner and be connected with regulating handle (8), and screw rod (5) stretches into the interior part of frame (0) and is sleeved on respect to screw rod (5) and does in heterodromous screw sleeve (4); Screw sleeve (4) outer circumferential face one side connects a support (3), and the respective side of screw sleeve (4) outer circumferential face upper bracket (3) is connected with slide block (6); The fulcrum (9-2) of rocking arm (9) is for being connected to the bearing pin of described support (3) lower side, and the longitudinal center line of bearing pin is vertical with the longitudinal center line of screw rod (5).
3. a kind of Metering Pump Stroke stepless regulator according to claim 2, it is characterized in that, slide block (6) on screw sleeve (4) is located at the slide rail (7) that is arranged in metering pump frame (0), the axial centre line parallel of the track of slide rail (7) and screw rod (5).
4. a kind of Metering Pump Stroke stepless regulator according to claim 1, it is characterized in that, described push rod (2) contacts with an eccentric cam (1) profile away from one end of rocking arm (9), and eccentric cam (1) is sleeved on by motor-driven rotating shaft (11).
5. a kind of Metering Pump Stroke stepless regulator according to claim 1, it is characterized in that, the end of rocking arm (9) is connected by the concentric shafts (12-1,12-2) of moving with rocking arm (9) respectively with the end of travel range drive rod (10), push rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320707993.7U CN203655594U (en) | 2013-11-11 | 2013-11-11 | Stepless adjusting device for metering pump stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320707993.7U CN203655594U (en) | 2013-11-11 | 2013-11-11 | Stepless adjusting device for metering pump stroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655594U true CN203655594U (en) | 2014-06-18 |
Family
ID=50921987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320707993.7U Expired - Fee Related CN203655594U (en) | 2013-11-11 | 2013-11-11 | Stepless adjusting device for metering pump stroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655594U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591007A (en) * | 2013-11-11 | 2014-02-19 | 中国核电工程有限公司 | Metering pump stroke stepless regulation device |
| CN107433711A (en) * | 2016-05-25 | 2017-12-05 | 苏州英士力精密科技有限公司 | A kind of shaped device of high-accuracy plastic carrier product |
-
2013
- 2013-11-11 CN CN201320707993.7U patent/CN203655594U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591007A (en) * | 2013-11-11 | 2014-02-19 | 中国核电工程有限公司 | Metering pump stroke stepless regulation device |
| CN103591007B (en) * | 2013-11-11 | 2016-08-17 | 中国核电工程有限公司 | A kind of Metering Pump Stroke stepless regulator |
| CN107433711A (en) * | 2016-05-25 | 2017-12-05 | 苏州英士力精密科技有限公司 | A kind of shaped device of high-accuracy plastic carrier product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20201111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |