CN201187426Y - Differential constant displacement pump - Google Patents
Differential constant displacement pump Download PDFInfo
- Publication number
- CN201187426Y CN201187426Y CNU2007201949851U CN200720194985U CN201187426Y CN 201187426 Y CN201187426 Y CN 201187426Y CN U2007201949851 U CNU2007201949851 U CN U2007201949851U CN 200720194985 U CN200720194985 U CN 200720194985U CN 201187426 Y CN201187426 Y CN 201187426Y
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- CN
- China
- Prior art keywords
- differential
- pump housing
- active piston
- constant flow
- pump
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- Expired - Fee Related
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Abstract
The utility model relates to the constant rate pump technical field, in particular to a differential constant rate pump, which comprises a PLC control apparatus, a pressure fluid pipeline and a control apparatus thereof, and is characterized in that a pump body, a feeding-side end closure, a discharge-side end closure, an active piston and a differential sleeve are provided, wherein, the feeding-side end closure is arranged on a feeding-side of the pump body, the discharge-side end closure is arranged on a discharge-side of the pump body, and the active piston and the differential sleeve are arranged inside the pump body and form a sliding fit with the pump body; the active piston and the differential sleeve form a differential device; a material inlet and a discharge hole which are arranged on the pump body are connected with a backward joint lever of the active piston and the differential sleeve; the pressure fluid pipeline is connected with a material feeding end and an exhaust end of the pump body; the PLC control apparatus is connected with the control apparatus of the pressure fluid pipeline. The differential constant rate pump has the advantages of fewer parts, simple mechanism, low failure rate, convenient maintenance and lower cost.
Description
Technical field
The utility model relates to the metering pump technical field, particularly a kind of differential constant flow pump.
Background technique
Present employed metering pump, metering pump of a great variety, its specific embodiments adopts motor and driving mechanism with slurry pressurization back output mostly, the metering method of output generally adopts volume measurement or metering instrument, adopts the input of the metering pump of volume measurement output generally all to adopt one-way valve control; Adopt the output of the metering pump of metering instrument output to need measuring instrument to be installed at output terminal.No matter adopt which kind of metering method, all have some defectives basically: component are many, mechanism is complicated, rate of fault is high, maintenance is inconvenient, cost is higher etc.Therefore wish that some component of exploitation are few, mechanism is simple, rate of fault is low, metering pump easy to maintenance, lower-cost.
Summary of the invention
The purpose of this utility model provides that a kind of component are few, mechanism is simple, rate of fault is low, metering pump easy to maintenance, lower-cost.
Differential constant flow pump of the present utility model, comprise the PLC control gear, pressure fluid pipeline and control gear thereof, it is characterized in that having a pump housing, be located at the feed side end cap of this pump housing feed side, be located at the discharge side end cap of this pump housing discharge side, be located at active piston and differential sleeve that the work of the pump housing therewith in this pump housing is slidingly matched, this active piston and differential sleeve constitute a differential attachment, be located at material inlet and discharge port on this pump housing, the connecting rod of swinging to that connects described active piston and differential sleeve, described pressure fluid pipeline is connected with exhaust end with the material feeding end of the pump housing, and described PLC control gear is connected with the control gear of pressure fluid pipeline.
Described active piston is provided with two seal rings.
Two seal rings are respectively arranged inside and outside the described differential sleeve.
A described end of swinging to connecting rod is connected with described active piston by nut.
Described feed side end cap is connected with the described pump housing by bolt with the discharge side end cap.
Described active piston is connected with the electromagnetism-gas-driving valve of described control gear by pipeline, and this electromagnetism-gas-driving valve is connected with described PLC control gear.
The described pump housing is the metallic material pump housing, the rigid plastics pump housing or the rubber pump housing.
Described active piston is the metallic material active piston, and the described connecting rod of swinging to is that metallic material is swung to connecting rod.
Described pressure fluid is pressurized gas or hydraulic fluid.
Differential constant flow pump of the present utility model is under original state, and active piston is at material feeding end, and differential sleeve leans on active piston.When outside material entered in the pump by material feeding mouth, differential sleeve just moved along connecting rod toward exhaust end, until being connected pole spacing.Until this moment, differential sleeve is blocked discharge port always, has been full of quantitative slurry in the pump chamber.Material feeding end at pump feeds pressurized air then, and when active piston was compressed air push, active piston was pushed with material and differential sleeve, arrives discharge port until material, and this moment, differential sleeve arrived the exhaust end of pump, and discharge port is also opened simultaneously.Because active piston continues to be compressed air push, material is discharged from the pump housing, leans on differential sleeve until active piston.So far, pump is finished once output.Stop material feeding end then and feed pressurized air, feed pressurized air, promote differential sleeve, connecting rod, and drive active piston and get back to material feeding end, finish a circulation from exhaust end.
The utility model has the advantages that: component are few, mechanism is simple, rate of fault is low, easy to maintenance, cost is lower.
Description of drawings
Fig. 1 is a structural representation block diagram of the present utility model.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
As shown in Figure 1, differential constant flow pump of the present utility model, comprise the PLC control gear, pressure fluid pipeline and control gear thereof, it is characterized in that having a pump housing 1, be located at the feed side end cap 7 of this pump housing 1 feed side, be located at the discharge side end cap 2 of this pump housing 1 discharge side, be located at active piston 5 and differential sleeve 3 that 1 work of the pump housing therewith in this pump housing 1 is slidingly matched, this active piston 5 constitutes a differential attachment with differential sleeve 3, be located at material inlet 8 and discharge port 9 on this pump housing 1, what connect described active piston 5 and differential sleeve 3 swings to connecting rod 4, described pressure fluid pipeline is connected with exhaust end with the material feeding end of the pump housing, and described PLC control gear is connected with the control gear of pressure fluid pipeline.
Described active piston 5 is provided with two seal rings.
Two seal rings are respectively arranged inside and outside the described differential sleeve 3.
A described end of swinging to connecting rod 4 is connected with described active piston 5 by nut 6.
Described feed side end cap 2 is connected with the described pump housing 1 by bolt with discharge side end cap 7.
Described active piston 5 is connected with the electromagnetism-gas-driving valve of described control gear by pipeline, and this electromagnetism-gas-driving valve is connected with described PLC control gear.
The described pump housing 1 is the metallic material pump housing, the rigid plastics pump housing or the rubber pump housing.
Described active piston 5 is the metallic material active piston, and the described connecting rod 4 of swinging to is swung to connecting rod for metallic material.
Described pressure fluid is pressurized gas or hydraulic fluid
Differential constant flow pump of the present utility model is under original state, and active piston is at material feeding end, and differential sleeve leans on active piston.When outside material entered in the pump by material feeding mouth, differential sleeve just moved along connecting rod toward exhaust end, until being connected pole spacing.Until this moment, differential sleeve is blocked discharge port always, has been full of quantitative slurry in the pump chamber.Material feeding end at pump feeds pressurized air then, and when active piston was compressed air push, active piston was pushed with material and differential sleeve, arrives discharge port until material, and this moment, differential sleeve arrived the exhaust end of pump, and discharge port is also opened simultaneously.Because active piston continues to be compressed air push, material is discharged from the pump housing, leans on differential sleeve until active piston.So far, pump is finished once output.Stop material feeding end then and feed pressurized air, feed pressurized air, promote differential sleeve, connecting rod, and drive active piston and get back to material feeding end, finish a circulation from exhaust end.
Claims (9)
1, a kind of differential constant flow pump, comprise the PLC control gear, pressure fluid pipeline and control gear thereof, it is characterized in that having a pump housing, be located at the feed side end cap of this pump housing feed side, be located at the discharge side end cap of this pump housing discharge side, be located at active piston and differential sleeve that the work of the pump housing therewith in this pump housing is slidingly matched, this active piston and differential sleeve constitute a differential attachment, be located at material inlet and discharge port on this pump housing, the connecting rod of swinging to that connects described active piston and differential sleeve, described pressure fluid pipeline is connected with exhaust end with the material feeding end of the pump housing, and described PLC control gear is connected with the control gear of pressure fluid pipeline.
2, differential constant flow pump according to claim 1 is characterized in that described active piston is provided with two seal rings.
3, differential constant flow pump according to claim 1 is characterized in that inside and outside the described differential sleeve two seal rings being arranged respectively.
4, differential constant flow pump according to claim 1 is characterized in that a described end of swinging to connecting rod is connected with described active piston by nut.
5, differential constant flow pump according to claim 1 is characterized in that described feed side end cap is connected with the described pump housing by bolt with the discharge side end cap.
6, differential constant flow pump according to claim 1 is characterized in that described active piston is connected with the electromagnetism-gas-driving valve of described control gear by pipeline, and this electromagnetism-gas-driving valve is connected with described PLC control gear.
7, differential constant flow pump according to claim 1 is characterized in that the described pump housing is the metallic material pump housing, the rigid plastics pump housing or the rubber pump housing.
8, differential constant flow pump according to claim 1 is characterized in that described active piston is the metallic material active piston, and the described connecting rod of swinging to is a metallic material side direction connecting rod.
9, differential constant flow pump according to claim 1 is characterized in that described pressure fluid is pressurized gas or hydraulic fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201949851U CN201187426Y (en) | 2007-11-15 | 2007-11-15 | Differential constant displacement pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201949851U CN201187426Y (en) | 2007-11-15 | 2007-11-15 | Differential constant displacement pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201187426Y true CN201187426Y (en) | 2009-01-28 |
Family
ID=40310447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201949851U Expired - Fee Related CN201187426Y (en) | 2007-11-15 | 2007-11-15 | Differential constant displacement pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201187426Y (en) |
-
2007
- 2007-11-15 CN CNU2007201949851U patent/CN201187426Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 Termination date: 20101115 |