CN204627970U - Single-plunger type metering pump and pump head component thereof - Google Patents
Single-plunger type metering pump and pump head component thereof Download PDFInfo
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- CN204627970U CN204627970U CN201520188630.6U CN201520188630U CN204627970U CN 204627970 U CN204627970 U CN 204627970U CN 201520188630 U CN201520188630 U CN 201520188630U CN 204627970 U CN204627970 U CN 204627970U
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Abstract
The utility model provides a kind of pump head component of single-plunger type metering pump, comprises pump head, stuffing box and plunger, and pump head has longitudinally through fluid passage, and the two ends up and down of fluid passage are equipped with one-way valve; Stuffing box and pump head are mutually vertical, and stuffing box has the active chamber that lateral direction penetrating is connected with fluid passage; The slidable sealing of plunger is plugged in described active chamber, the sidewall of stuffing box offers the return flow line be connected with active chamber and fluid passage, and return flow line is provided with the safety check that fluid can be stoped from fluid passage to flow into active chamber.The utility model additionally provides a kind of single-plunger type metering pump, comprises pump head component as above.The utility model is by arranging return flow line, the fluid entered in the gap between plunger and stuffing box is made to flow in return flow line, and can the fluid in return flow line be sucked in fluid passage when imbibition, effectively can prevent reverse flow of fluids by arranging safety check on return flow line, anti-fluid is leaked simultaneously.
Description
Technical field
The utility model relates to a kind of metering pump, refers in particular to a kind of single-plunger type metering pump.
Background technique
Filler and pressure ring compression by import one-way valve, Outlet check valves, and are realized sealing by Gland by the pressurization working lumen of the pump head component (fluid end) of single-plunger type metering pump.One end of plunger is stretched in pressurization working lumen, during use, by plunger reciprocates, makes the volume of pressurization working lumen change to realize imbibition, hydraulic fluid, and once, imbibition and discharge opeing respectively once, complete and once circulate plunger reciprocates.Pressure, quantitative suction liquid is had continuously in the back and forth middle formation of pump.Wherein, in the process of carrying out imbibition, plunger, to the direction motion exiting pressurization working lumen, now easily causes the liquid in pressurization working lumen can be taken out of to pressurization working lumen outside by plunger, thus causes single-plunger type metering pump to leak.
Model utility content
The purpose of this utility model is to provide and a kind ofly can prevents the fluid in active chamber from imbibition process, being taken out of single-plunger type metering pump to active chamber outside and pump head component thereof by plunger.
For achieving the above object, the utility model provides a kind of pump head component of single-plunger type metering pump, comprising:
Pump head, described pump head has longitudinally through fluid passage, and the two ends up and down of described fluid passage are equipped with one-way valve;
Stuffing box, described stuffing box is arranged with described pump head is mutually vertical, and described stuffing box has the active chamber of lateral direction penetrating, and described active chamber is connected with described fluid passage;
Plunger, the slidable sealing of described plunger is plugged in described active chamber; Wherein,
The sidewall of described stuffing box offers the return flow line be connected with described active chamber and described fluid passage, described return flow line is provided with fluid can be stoped to flow into the safety check of described active chamber from described fluid passage.
The pump head component of single-plunger type metering pump as above, wherein, described return flow line is positioned at the inside of the bottom sidewall of described stuffing box.
The pump head component of single-plunger type metering pump as above, wherein, the one-way valve of the lower end of described fluid passage is import one-way valve, and the one-way valve of the upper end of described fluid passage is Outlet check valves.
The pump head component of single-plunger type metering pump as above, wherein, the inwall of described stuffing box away from the side of described pump head is formed with containing groove, black box is provided with in described containing groove, one end of described black box is against the inner wall of end of described containing groove near described pump head, and described black box fits tightly with the outer wall of described plunger and contacts, described black box is provided with the through hole that can be communicated with described return flow line and described active chamber.
The pump head component of single-plunger type metering pump as above, wherein, described black box comprises the first Sealing and the first pressure ring, one end of described first Sealing is against the inner wall of end of described containing groove near described pump head, described first pressure ring press-fits the other end in described first Sealing, and the sidewall of described first pressure ring is provided with the through hole that can be communicated with described return flow line and described active chamber.
The pump head component of single-plunger type metering pump as above, wherein, described first Sealing is the Y type Sealing of multiple grafting in turn, and the sealing lip of multiple described Y type Sealing is all towards described pump head.
The pump head component of single-plunger type metering pump as above, wherein, described black box also comprises the second Sealing and the second pressure ring, one end of described second Sealing is resisted against on described first pressure ring, and described second Sealing and described first Sealing lay respectively at the two ends of described first pressure ring, described second pressure ring press-fits the other end in described second Sealing.
The pump head component of single-plunger type metering pump as above, wherein, described second Sealing is packing.
The pump head component of single-plunger type metering pump as above, wherein, the pump head component of described single-plunger type metering pump also comprises Gland, described Gland is covered on the end of described stuffing box away from described pump head, and the second pressure ring described in described Gland contact, described Gland is provided with the cross through hole that can pass for described plunger.
The pump head component of single-plunger type metering pump as above, wherein, the outer wall of described plunger is covered with smooth plating layer surface.
The pump head component of single-plunger type metering pump as above, wherein, the roughness on described smooth plating layer surface is not more than 0.025 micron.
The utility model additionally provides a kind of single-plunger type metering pump, wherein, described single-plunger type metering pump comprises the pump head component of single-plunger type metering pump as above, and described single-plunger type metering pump also comprises pump assembly, pump head link, Flow-rate adjustment assembly, motor and transmitting assemblies, the pump head component of described single-plunger type metering pump is connected with described pump assembly by described pump head link, described motor is connected with described pump assembly by described transmitting assemblies, and described Flow-rate adjustment assembly is connected with described pump assembly.
Compared with prior art, advantage of the present utility model is as follows:
1, the single-plunger type metering pump that the utility model provides and pump head component thereof by arranging return flow line on the inwall of stuffing box, the fluid entered in the gap between plunger and stuffing box can be made to flow into when arriving return flow line in return flow line, and when imbibition, because the pressure in fluid passage reduces, can the fluid in return flow line be sucked in fluid passage, can effectively anti-fluid flow back in the gap between plunger and stuffing box along return flow line by arranging safety check on return flow line simultaneously, anti-fluid is from the slot leakage between plunger and stuffing box.
2, the single-plunger type metering pump that the utility model provides and pump head component thereof are by making the two ends of the first Sealing respectively against inner wall of end and first pressure ring of containing groove, by the first Sealing to be installed in containing groove by the mode compressed, first Sealing is set to the Y type Sealing of multiple grafting in turn simultaneously, can by the magnitude of interference of sealing lip of multiple Y type Sealing and the inner wall of end of the first pressure ring and containing groove to multiple Y type Sealing applied pressure, multiple Y type Sealing is radially expanded, self-tightening effect is produced by resiliently deformable, block and gap between containing groove inwall and plunger, further lift-off seal effect, anti-fluid is leaked.
3, the single-plunger type metering pump that provides of the utility model and pump head component thereof are by covering smooth plating layer surface at plunger surface, the roughness of plunger surface can be reduced, thus the wearing and tearing reduced to the first Sealing and the second Sealing in plunger reciprocates process, ensure that the first Sealing and working life of Sealing, reduce user cost of the present utility model.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the structural representation of the pump head component of the single-plunger type metering pump that the utility model provides;
Fig. 2 is the seal component architecture schematic diagram of the pump head component of the single-plunger type metering pump that the utility model provides;
Fig. 3 is the plan view of the single-plunger type metering pump that the utility model provides;
Fig. 4 is the plan view of the single-plunger type metering pump that the utility model provides;
Fig. 5 is the side view of the single-plunger type metering pump that the utility model provides.
Drawing reference numeral illustrates:
1 pump head component
11 pump heads
111 fluid passages
12 import one-way valves
13 Outlet check valves
14 stuffing boxes
141 return flow lines
142 safety check
15 plungers
16 black boies
161 first Sealings
162 first pressure rings
163 second Sealings
164 second pressure rings
17 Glands
2 pump assemblies
3 pump head links
4 motors
5 transmitting assembliess
6 Flow-rate adjustment assemblies
Embodiment
In order to have clearer understanding to the technical solution of the utility model, object and effect, existing accompanying drawings embodiment of the present utility model.
As shown in Figure 1, the utility model provides a kind of pump head component of single-plunger type metering pump, comprise pump head 11, stuffing box 14 and plunger 15, the inside of pump head 11 has longitudinally through fluid passage 111, the two ends up and down of fluid passage 111 are equipped with one-way valve, it is inner that fluid enters fluid passage 111 from the lower end of fluid passage 111 by one-way valve, and flow out from inside, fluid passage 111 from the upper end of fluid passage 111 through one-way valve, stuffing box 14 is arranged with pump head 11 is mutually vertical, and stuffing box 14 has the active chamber of lateral direction penetrating, and active chamber is connected with fluid passage 111, and fluid enters the inside of fluid passage 111 and active chamber by the one-way valve of lower end, fluid passage 111, the slidable sealing of plunger 15 is plugged in active chamber, when plunger 15 slides to the direction away from pump head 11, the volume of active chamber increases, pressure in fluid passage 111 and active chamber reduces, fluid is inhaled in fluid passage 111 and active chamber by the one-way valve of lower end, fluid passage 111, completes imbibition, plunger 15 to when sliding near the direction of pump head 11, the smaller volume of active chamber, the pressure in fluid passage 111 and active chamber increases, and it is outside that fluid is pressed out to fluid passage 111 from the one-way valve of upper end, fluid passage 111, completes discharge opeing, wherein, the sidewall of stuffing box 14 offers the return flow line 141 be connected with active chamber and fluid passage 111, in plunger 15 reciprocatory movement, enter fluid in the gap between plunger 15 and stuffing box 14 when arriving return flow line 141, can flow in return flow line 141, when plunger 15 moves to the direction away from pump head 11, volume due to active chamber becomes large, pressure in active chamber and fluid passage 111 reduces, will suck in fluid passage 111 by the fluid in return flow line 141, return flow line 141 is provided with fluid can be stoped to flow into the safety check of active chamber from fluid passage 111, can pressure in active chamber and fluid passage 111 when increasing, anti-fluid is pressed into return flow line 141 from fluid passage 111, thus anti-fluid is from the slot leakage between plunger 15 and stuffing box 14.
Further, as shown in Figure 1, the pump head component of the single-plunger type metering pump that the utility model provides, wherein, return flow line 141 is positioned at the inside of the bottom sidewall of stuffing box 14.In the process that plunger 15 moves, fluid can enter in the gap of the annular between plunger 15 and stuffing box 14, and these fluids can be flowed downward by the impact of gravity, so return flow line 141 to be arranged on the inside of the bottom sidewall of stuffing box 14, effectively can ensure that the fluid entered in the gap between plunger 15 and stuffing box 14 can flow in return flow line 141.
Further, as shown in Figure 1, the pump head component of the single-plunger type metering pump that the utility model provides, wherein, the one-way valve of the lower end of fluid passage 111 is import one-way valve 12, and the one-way valve of the upper end of fluid passage 111 is Outlet check valves 13.Import one-way valve 12 is located at the below of fluid passage 111, after fluid enters the inside of fluid passage 111 from import one-way valve 12, can apply active force to import one-way valve 12 by the Action of Gravity Field of fluid self makes import one-way valve 12 close, simultaneously, in discharge opeing process, during pressure increase in active chamber and fluid passage 111, fluid is applied to the active force that one-way valve makes it close and also can increases thereupon, can effectively anti-fluid leak from import one-way valve 12.
Further, as shown in Figure 1, the pump head component of the single-plunger type metering pump that the utility model provides, wherein, the inwall of stuffing box 14 away from the side of pump head 11 is formed with containing groove, namely stuffing box 14 radially extends out at the inwall of the side away from pump head 11, the inwall of stuffing box 14 forms step and containing groove, black box 16 is provided with in containing groove, one end of black box 16 is against the inner wall of end of containing groove near pump head 11, namely one end of black box 16 is resisted against on step, and black box 16 fits tightly with the outer wall of plunger 15 and contacts, now black box 16 respectively with the outer wall of plunger 15, the inwall of containing groove fits tightly contact, can gap between sealed plunger 15 and stuffing box 14, thus improve sealability of the present utility model, black box 16 is provided with the through hole that can be communicated with return flow line 141 and active chamber, the fluid entered in the gap between black box 16 and plunger 15 can be entered in return flow line 141 by through hole.
Further, as shown in Figures 1 and 2, the pump head component of the single-plunger type metering pump that the utility model provides, wherein, black box 16 comprises the first Sealing 161 and the first pressure ring 162, one end of first Sealing 161 is against the inner wall of end of containing groove near pump head 11, namely one end of the first Sealing 161 is resisted against on step, first pressure ring 162 press-fits the other end in the first Sealing 161, by the first pressure ring 162, pressure is applied to the first Sealing 161, thus the first Sealing 161 is pressed in the gap between plunger 15 and stuffing box 14, the sidewall of the first pressure ring 162 is provided with the through hole that can be communicated with return flow line 141 and active chamber, the fluid entered in the gap between black box 16 and plunger 15 can be entered in return flow line 141 by through hole.
As preferably, as shown in Figure 2, the pump head component of the single-plunger type metering pump that the utility model provides, wherein, first Sealing 161 is the Y type Sealing of multiple grafting in turn, wherein, Y type Sealing is existing structure, this repeats no more again, the sealing lip of multiple Y type Sealing is all towards pump head 11, because the first Sealing 161 is to be installed in containing groove by the mode compressed, namely multiple Y type Sealing is to be installed in containing groove by the mode compressed, as can be seen from the figure, when multiple Y type Sealing is compressed, the sealing lip of each Y type Sealing can radially be expanded towards the inwall of plunger 15 and containing groove, self-tightening effect is formed by elastic strain, gap between plunger 15 and containing groove is filled up as much as possible, namely the gap between plunger 15 and stuffing box 14 is filled up, substantially increase sealability of the present utility model.
As preferably, as shown in Figures 1 and 2, the pump head component of the single-plunger type metering pump that the utility model provides, wherein, the inside and outside both sides of the first pressure ring 162, the position being communicated with the through hole of return flow line and active chamber in correspondence is equipped with annular groove, when the first pressure ring 162 is installed in containing groove, inside and outside the first pressure ring 162, both sides form a buffer cavity respectively, make the fluid in the gap between plunger 15 and stuffing box 14 can enter buffer cavity inside the first pressure ring 162 by the through hole on the first pressure ring 162 from the buffer cavity outside the first pressure ring 162, or enter to the buffer cavity outside the first pressure ring 162 from the buffer cavity inside the first pressure ring 162, and finally flow in return flow line 141.By arranging buffer cavity, when entering the fluid in the gap between plunger 15 and stuffing box 14 and be more, a space can be provided for fluid cushion and temporarily deposit, thus avoiding occurring when fluid is more the situation that fluid leaks.
Further, as shown in Figures 1 and 2, the pump head component of the single-plunger type metering pump that the utility model provides, wherein, black box 16 also comprises the second Sealing 163 and the second pressure ring 164, one end of second Sealing 163 is resisted against on the first pressure ring 162, and the second Sealing 163 and the first Sealing 161 lay respectively at the two ends of the first pressure ring 162, second pressure ring 164 press-fits the other end in the second Sealing 163, namely the first Sealing 161, first pressure ring 162, second Sealing 163, second pressure ring 164 in turn mutually compressing against be installed in containing groove.One deck sealing can be increased by arranging the second Sealing 163 and the second pressure ring 164 between plunger 15 and stuffing box 14, sealability of the present utility model can be improved further.
As preferably, as shown in Figure 1, the pump head component of the single-plunger type metering pump that the utility model provides, wherein, the second Sealing 163 is packing.Wherein, the second Sealing 163 can also adopt other any type of Sealings that can play seal action, and the utility model is not as limit.
Further, as shown in Figure 1, the pump head component of the single-plunger type metering pump that the utility model provides, wherein, the pump head component of single-plunger type metering pump also comprises Gland 17, and Gland 17 is covered on the end of stuffing box 14 away from pump head 11, and Gland 17 contact second pressure ring 164, Gland 17 is provided with the cross through hole that can pass for plunger 15, is namely closely press-fited in containing groove by black box 16 by Gland 17.
As preferably, the pump head component of the single-plunger type metering pump that the utility model provides, wherein, the outer wall of plunger 15 is covered with smooth plating layer surface, and the coating of body surface smoothness can be improved for ceramic plated layer or the coat of metal etc. in smooth plating layer surface.
As preferably, the pump head component of the bright single-plunger type metering pump provided of this law, wherein, the roughness on smooth plating layer surface is not more than 0.025 micron.When the roughness on smooth plating layer surface is not more than 0.025 micron, effectively can reduce the friction between plunger 15 and the first Sealing 161, second Sealing 163, thus ensure the working life of the first Sealing 161, second Sealing 163, reduce user cost of the present utility model.
As shown in Fig. 3 ~ Fig. 5, the utility model additionally provides a kind of single-plunger type metering pump, wherein, single-plunger type metering pump comprises the pump head component 1 of single-plunger type metering pump as above, and single-plunger type metering pump also comprises pump assembly 2, pump head link 3, Flow-rate adjustment assembly 6, motor 4 and transmitting assemblies 5, the pump head component 1 of single-plunger type metering pump is connected with pump assembly 2 by pump head link 3, motor 4 is connected with pump assembly 2 by transmitting assemblies 5, and Flow-rate adjustment assembly 6 is connected with pump assembly 2.
The single-plunger type metering pump that the utility model provides and pump head component thereof are in use, in imbibition process, plunger 15 moves to the direction away from pump head 11, the volume of active chamber becomes large, pressure in active chamber and fluid passage 111 reduces, import one-way valve 12 is opened, fluid is inhaled in fluid passage 111 and active chamber, in discharge opeing process, plunger 15 moves near the direction of pump head 11, the volume of active chamber diminishes, pressure in active chamber and fluid passage 111 increases, Outlet check valves 13 is opened, it is outside that fluid is pressed out to fluid passage 111 from Outlet check valves 13, wherein, when plunger 15 completes an imbibition discharge opeing, enter in the gap between plunger 15 and stuffing box 14 (or black box 16) and can fluid be remained, fluid flows in return flow line 141 by the Action of Gravity Field meeting (through hole through on black box 16) of self, when upper once imbibition, the fluid in return flow line 141 can be inhaled in fluid passage 111.
Compared with prior art, advantage of the present utility model is as follows:
1, the single-plunger type metering pump that the utility model provides and pump head component thereof by arranging return flow line on the inwall of stuffing box, the fluid entered in the gap between plunger and stuffing box can be made to flow into when arriving return flow line in return flow line, and when imbibition, because the pressure in fluid passage reduces, can the fluid in return flow line be sucked in fluid passage, can effectively anti-fluid flow back in the gap between plunger and stuffing box along return flow line by arranging safety check on return flow line simultaneously, anti-fluid is from the slot leakage between plunger and stuffing box.
2, the single-plunger type metering pump that the utility model provides and pump head component thereof are by making the two ends of the first Sealing respectively against inner wall of end and first pressure ring of containing groove, by the first Sealing to be installed in containing groove by the mode compressed, first Sealing is set to the Y type Sealing of multiple grafting in turn simultaneously, can by the magnitude of interference of sealing lip of multiple Y type Sealing and the inner wall of end of the first pressure ring and containing groove to multiple Y type Sealing applied pressure, multiple Y type Sealing is radially expanded, self-tightening effect is produced by resiliently deformable, block and gap between containing groove inwall and plunger, further lift-off seal effect, anti-fluid is leaked.
3, the single-plunger type metering pump that provides of the utility model and pump head component thereof are by covering smooth plating layer surface at plunger surface, the roughness of plunger surface can be reduced, thus the wearing and tearing reduced to the first Sealing and the second Sealing in plunger reciprocates process, ensure that the first Sealing and working life of Sealing, reduce user cost of the present utility model.
The foregoing is only the schematic embodiment of the utility model, and be not used to limit scope of the present utility model.Any those of ordinary skill in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (12)
1. a pump head component for single-plunger type metering pump, comprising:
Pump head, described pump head has longitudinally through fluid passage, and the two ends up and down of described fluid passage are equipped with one-way valve;
Stuffing box, described stuffing box is arranged with described pump head is mutually vertical, and described stuffing box has the active chamber of lateral direction penetrating, and described active chamber is connected with described fluid passage;
Plunger, the slidable sealing of described plunger is plugged in described active chamber; It is characterized in that,
The sidewall of described stuffing box offers the return flow line be connected with described active chamber and described fluid passage, described return flow line is provided with fluid can be stoped to flow into the safety check of described active chamber from described fluid passage.
2. the pump head component of single-plunger type metering pump according to claim 1, is characterized in that, described return flow line is positioned at the inside of the bottom sidewall of described stuffing box.
3. the pump head component of single-plunger type metering pump according to claim 1, is characterized in that, the one-way valve of the lower end of described fluid passage is import one-way valve, and the one-way valve of the upper end of described fluid passage is Outlet check valves.
4. the pump head component of single-plunger type metering pump according to claim 1, it is characterized in that, the inwall of described stuffing box away from the side of described pump head is formed with containing groove, black box is provided with in described containing groove, one end of described black box is against the inner wall of end of described containing groove near described pump head, and described black box fits tightly with the outer wall of described plunger and contacts, described black box is provided with the through hole that can be communicated with described return flow line and described active chamber.
5. the pump head component of single-plunger type metering pump according to claim 4, it is characterized in that, described black box comprises the first Sealing and the first pressure ring, one end of described first Sealing is against the inner wall of end of described containing groove near described pump head, described first pressure ring press-fits the other end in described first Sealing, and the sidewall of described first pressure ring is provided with the through hole that can be communicated with described return flow line and described active chamber.
6. the pump head component of single-plunger type metering pump according to claim 5, is characterized in that, described first Sealing is the Y type Sealing of multiple grafting in turn, and the sealing lip of multiple described Y type Sealing is all towards described pump head.
7. the pump head component of single-plunger type metering pump according to claim 5, it is characterized in that, described black box also comprises the second Sealing and the second pressure ring, one end of described second Sealing is resisted against on described first pressure ring, and described second Sealing and described first Sealing lay respectively at the two ends of described first pressure ring, described second pressure ring press-fits the other end in described second Sealing.
8. the pump head component of single-plunger type metering pump according to claim 7, is characterized in that, described second Sealing is packing.
9. the pump head component of single-plunger type metering pump according to claim 7, it is characterized in that, the pump head component of described single-plunger type metering pump also comprises Gland, described Gland is covered on the end of described stuffing box away from described pump head, and the second pressure ring described in described Gland contact, described Gland is provided with the cross through hole that can pass for described plunger.
10. the pump head component of single-plunger type metering pump according to claim 1, is characterized in that, the outer wall of described plunger is covered with smooth plating layer surface.
The pump head component of 11. single-plunger type metering pumps according to claim 10, is characterized in that, the roughness on described smooth plating layer surface is not more than 0.025 micron.
12. 1 kinds of single-plunger type metering pumps, it is characterized in that, described single-plunger type metering pump comprises the pump head component of the single-plunger type metering pump as described in any one of claim 1-11, and described single-plunger type metering pump also comprises pump assembly, pump head link, Flow-rate adjustment assembly, motor and transmitting assemblies, the pump head component of described single-plunger type metering pump is connected with described pump assembly by described pump head link, described motor is connected with described pump assembly by described transmitting assemblies, and described Flow-rate adjustment assembly is connected with described pump assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188630.6U CN204627970U (en) | 2015-03-31 | 2015-03-31 | Single-plunger type metering pump and pump head component thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520188630.6U CN204627970U (en) | 2015-03-31 | 2015-03-31 | Single-plunger type metering pump and pump head component thereof |
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| Publication Number | Publication Date |
|---|---|
| CN204627970U true CN204627970U (en) | 2015-09-09 |
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| CN201520188630.6U Active CN204627970U (en) | 2015-03-31 | 2015-03-31 | Single-plunger type metering pump and pump head component thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747432A (en) * | 2015-03-31 | 2015-07-01 | 中国石油大学(北京) | Single-plunger metering pump and pump head assembly thereof |
| CN107965436A (en) * | 2017-08-16 | 2018-04-27 | 常州信息职业技术学院 | Air compressor |
| CN108266368A (en) * | 2018-01-30 | 2018-07-10 | 浙江大农实业股份有限公司 | 100KW grade high-pressure plunger pumps with self-cleaning function |
| CN108278189A (en) * | 2018-03-20 | 2018-07-13 | 浙江力高泵业科技有限公司 | A kind of No leakage plunger type metering pump |
| CN108571603A (en) * | 2017-07-12 | 2018-09-25 | 杭州南方赛珀工业设备有限公司 | It is a kind of to fix hinged check valve |
| CN109219715A (en) * | 2016-06-06 | 2019-01-15 | 爱尔铃克铃尔股份公司 | Piston apparatus and pumping unit |
| CN114829770A (en) * | 2019-12-20 | 2022-07-29 | 微射流国际公司 | High pressure pump structure |
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2015
- 2015-03-31 CN CN201520188630.6U patent/CN204627970U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747432A (en) * | 2015-03-31 | 2015-07-01 | 中国石油大学(北京) | Single-plunger metering pump and pump head assembly thereof |
| CN109219715A (en) * | 2016-06-06 | 2019-01-15 | 爱尔铃克铃尔股份公司 | Piston apparatus and pumping unit |
| CN109219715B (en) * | 2016-06-06 | 2022-05-13 | 爱尔铃克铃尔股份公司 | Piston device and pump apparatus |
| US11840995B2 (en) | 2016-06-06 | 2023-12-12 | Elringklinger Ag | Piston device and pump device |
| CN108571603A (en) * | 2017-07-12 | 2018-09-25 | 杭州南方赛珀工业设备有限公司 | It is a kind of to fix hinged check valve |
| CN108571603B (en) * | 2017-07-12 | 2024-01-09 | 杭州南方赛珀工业设备有限公司 | Fixed articulated check valve |
| CN107965436A (en) * | 2017-08-16 | 2018-04-27 | 常州信息职业技术学院 | Air compressor |
| CN108266368A (en) * | 2018-01-30 | 2018-07-10 | 浙江大农实业股份有限公司 | 100KW grade high-pressure plunger pumps with self-cleaning function |
| CN108278189A (en) * | 2018-03-20 | 2018-07-13 | 浙江力高泵业科技有限公司 | A kind of No leakage plunger type metering pump |
| CN114829770A (en) * | 2019-12-20 | 2022-07-29 | 微射流国际公司 | High pressure pump structure |
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