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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- 239000012530 fluid Substances 0.000 claims abstract description 103
- 238000007789 sealing Methods 0.000 claims abstract description 87
- 210000004907 gland Anatomy 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000012856 packing Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 238000005213 imbibition Methods 0.000 abstract description 5
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 14
- 238000003825 pressing Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000005253 cladding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
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 measuring pump especially indicates a single plunger type measuring pump.
Background
The sealed working cavity of the pump head assembly (hydraulic end) of the single-plunger metering pump is sealed by an inlet check valve, an outlet check valve and a packing gland which compresses packing and a pressure ring. One end of the plunger extends into the sealed working cavity, when the liquid sucking and liquid pressing device is used, the volume of the sealed working cavity is changed through the reciprocating motion of the plunger, so that liquid sucking and liquid pressing are realized, the reciprocating motion of the plunger is one time, and liquid sucking and liquid discharging are respectively one time, so that one cycle is completed. During the reciprocating of the pump, the liquid is continuously sucked and discharged in a pressure and quantitative manner. During the liquid suction process, the plunger moves towards the direction of withdrawing from the sealed working chamber, so that the liquid in the sealed working chamber is easily carried out to the outside of the sealed working chamber by the plunger, and the leakage of the single-plunger metering pump is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can prevent that the fluid in the working chamber is taken out to the outside single plunger type measuring pump of working chamber and pump head subassembly by the plunger at the imbibition in-process.
In order to achieve the above object, the utility model provides a pump head subassembly of single plunger type measuring pump, include:
the pump head is provided with a longitudinally-through fluid channel, and the upper end and the lower end of the fluid channel are provided with one-way valves;
the stuffing box and the pump head are arranged vertically, the stuffing box is provided with a transversely through working cavity, and the working cavity is communicated with the fluid channel;
the plunger piston can be inserted in the working cavity in a sliding and sealing manner; wherein,
and a backflow channel communicated with the working cavity and the fluid channel is formed in the side wall of the stuffing box, and a check valve capable of preventing fluid from flowing into the working cavity from the fluid channel is arranged on the backflow channel.
The pump head assembly of a single plunger metering pump as described above, wherein the return passageway is located inside a bottom side wall of the stuffing box.
The pump head assembly of a single plunger metering pump as described above, wherein the check valve at the lower end of the fluid passageway is an inlet check valve and the check valve at the upper end of the fluid passageway is an outlet check valve.
The pump head assembly of the single-plunger metering pump comprises a stuffing box, wherein a containing groove is formed in the inner wall of one side, away from the pump head, of the stuffing box, a sealing assembly is arranged in the containing groove, one end of the sealing assembly abuts against the inner wall of the end portion, close to the pump head, of the containing groove, the sealing assembly is in close fit contact with the outer wall of the plunger, and a through hole capable of communicating the backflow channel with the working cavity is formed in the sealing assembly.
The pump head assembly of the single-plunger metering pump comprises a first sealing element and a first pressing ring, one end of the first sealing element abuts against the inner wall of the end portion, close to the pump head, of the accommodating groove, the first pressing ring is pressed on the other end of the first sealing element, and a through hole capable of communicating the backflow channel with the working cavity is formed in the side wall of the first pressing ring.
The pump head assembly of a single plunger metering pump as described above, wherein said first seal is a plurality of serially inserted Y-seals, the sealing lips of each of said plurality of Y-seals facing said pump head.
The pump head assembly of the single plunger type metering pump as described above, wherein the sealing assembly further includes a second sealing member and a second pressing ring, one end of the second sealing member abuts against the first pressing ring, the second sealing member and the first sealing member are respectively located at two ends of the first pressing ring, and the second pressing ring is press-fitted to the other end of the second sealing member.
A pump head assembly for a single plunger metering pump as described above, wherein the second seal is a packing.
The pump head assembly of the single-plunger metering pump comprises a first compression ring, a first plunger, a second plunger, a stuffing box, a second compression ring and a stuffing cover, wherein the stuffing box is arranged at the end part of the first plunger, the stuffing cover is arranged at the end part of the second plunger, and the stuffing cover is pressed against the second compression ring.
A pump head assembly for a single plunger metering pump as described above, wherein the outer wall of said plunger is coated with a smooth plated surface.
A pump head assembly for a single plunger metering pump as described above, wherein the smooth plated surface has a roughness of no more than 0.025 microns.
The utility model also provides a single plunger type measuring pump, wherein, single plunger type measuring pump includes as above the pump head subassembly of single plunger type measuring pump, just single plunger type measuring pump still includes pump body subassembly, pump head connecting piece, flow control subassembly, motor and drive assembly, the pump head subassembly of single plunger type measuring pump passes through the pump head connecting piece with pump body subassembly connects, the motor passes through drive assembly with pump body subassembly connects, flow control subassembly with pump body subassembly connects.
Compared with the prior art, the utility model has the advantages as follows:
1. the utility model provides a single plunger type measuring pump and pump head subassembly thereof is through setting up backflow channel on the inner wall at the stuffing box, can make the fluid that gets into in the gap between plunger and the stuffing box flow into during backflow channel when reacing backflow channel, and when the imbibition, because the pressure in the fluid passage reduces, can be with the fluid among the backflow channel in the fluid suction flow path, simultaneously can prevent effectively that the fluid from flowing back to the gap between plunger and the stuffing box along backflow channel through set up the check valve on backflow channel in, prevent that the fluid from leaking from the gap between plunger and the stuffing box.
2. The utility model provides a single plunger type measuring pump and pump head subassembly thereof supports tip inner wall and the first clamping ring that leans on the storage tank respectively through the both ends that make first sealing member, install first sealing member in the storage tank with the mode of compressed, establish first sealing member into a plurality of Y type sealing members of pegging graft in order simultaneously, can be through the interference magnitude of the seal lip of a plurality of Y type sealing members and the pressure that the tip inner wall of first clamping ring and storage tank was applyed a plurality of Y type sealing members, make a plurality of Y type sealing members along radial expansion, produce from the tight effect through elastic deformation, plug up and the gap between storage tank inner wall and the plunger, further promote sealed effect, prevent fluid leakage.
3. The utility model provides a single plunger type measuring pump and pump head subassembly thereof can reduce the roughness on plunger surface through covering at the plunger surface and establishing smooth cladding material surface to reduce the plunger reciprocating motion in-process to the wearing and tearing of first sealing member and second sealing member, guaranteed the life of first sealing member and sealing member, reduced the utility model discloses a use cost.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic structural diagram of a pump head assembly of a single-plunger metering pump provided by the present invention;
fig. 2 is a schematic structural view of a seal assembly of a pump head assembly of the single-plunger metering pump provided by the present invention;
fig. 3 is a front view of the single plunger metering pump provided by the present invention;
fig. 4 is a top view of the single plunger metering pump provided by the present invention;
fig. 5 is a side view of the single plunger metering pump provided by the present invention.
The reference numbers illustrate:
1 Pump head Assembly
11 Pump head
111 fluid channel
12 inlet check valve
13 outlet check valve
14 stuffing box
141 return channel
142 check valve
15 plunger
16 seal assembly
161 first seal
162 first press ring
163 second seal
164 second pressure ring
17 packing gland
2 Pump body assembly
3 Pump head connecting piece
4 electric machine
5 Transmission assembly
6 flow regulating assembly
Detailed Description
In order to clearly understand the technical solution, purpose and effect of the present invention, the detailed embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a pump head assembly of a single plunger type metering pump, which comprises a pump head 11, a stuffing box 14 and a plunger 15, wherein a fluid passage 111 running through in the pump head 11 in the longitudinal direction is provided, the upper end and the lower end of the fluid passage 111 are both provided with a check valve, fluid enters the fluid passage 111 from the lower end of the fluid passage 111 through the check valve, and flows out from the fluid passage 111 through the check valve from the upper end of the fluid passage 111; the stuffing box 14 and the pump head 11 are arranged vertically, the stuffing box 14 is provided with a transversely through working cavity, the working cavity is communicated with the fluid channel 111, and fluid enters the fluid channel 111 and the inside of the working cavity through a one-way valve at the lower end of the fluid channel 111; the plunger 15 can be inserted in the working chamber in a sliding and sealing manner, when the plunger 15 slides in the direction far away from the pump head 11, the volume of the working chamber is increased, the pressure intensity in the fluid passage 111 and the working chamber is reduced, and fluid is sucked into the fluid passage 111 and the working chamber through the one-way valve at the lower end of the fluid passage 111 to finish liquid suction; when the plunger 15 slides towards the pump head 11, the volume of the working chamber is reduced, the pressure in the fluid channel 111 and the working chamber is increased, and the fluid is pressed out of the fluid channel 111 from the one-way valve at the upper end of the fluid channel 111 to discharge the fluid; wherein, the sidewall of the stuffing box 14 is provided with a backflow channel 141 communicated with the working chamber and the fluid channel 111, when the plunger 15 reciprocates, the fluid entering the gap between the plunger 15 and the stuffing box 14 flows into the backflow channel 141 when reaching the backflow channel 141, when the plunger 15 moves away from the pump head 11, the volume of the working chamber is increased, the pressure in the working chamber and the fluid channel 111 is reduced, the fluid in the backflow channel 141 is sucked into the fluid channel 111, the backflow channel 141 is provided with a check valve capable of preventing the fluid from flowing into the working chamber from the fluid channel 111, when the pressure in the working chamber and the fluid channel 111 is increased, the fluid is prevented from being pressed into the backflow channel 141 from the fluid channel 111, thereby preventing the fluid from leaking from the gap between the plunger 15 and the stuffing box 14.
Further, as shown in fig. 1, the present invention provides a pump head assembly of a single plunger type metering pump, wherein the return channel 141 is located inside the bottom side wall of the stuffing box 14. During the movement of the plunger 15, the fluid enters the annular gap between the plunger 15 and the stuffing box 14, and the fluid flows downwards under the influence of gravity, so that the backflow channel 141 is arranged inside the bottom side wall of the stuffing box 14, and the fluid entering the gap between the plunger 15 and the stuffing box 14 can be effectively ensured to flow into the backflow channel 141.
Further, as shown in fig. 1, the present invention provides a pump head assembly of a single plunger type metering pump, wherein the check valve at the lower end of the fluid passage 111 is an inlet check valve 12, and the check valve at the upper end of the fluid passage 111 is an outlet check valve 13. The inlet check valve 12 is arranged below the fluid channel 111, after the fluid enters the fluid channel 111 from the inlet check valve 12, acting force can be applied to the inlet check valve 12 through the gravity action of the fluid to close the inlet check valve 12, meanwhile, in the liquid discharging process, when the pressure in the working cavity and the fluid channel 111 is increased, the acting force applied to the check valve by the fluid to close the check valve is increased, and the fluid can be effectively prevented from leaking from the inlet check valve 12.
Further, as shown in fig. 1, the present invention provides a pump head assembly of a single plunger type metering pump, wherein a containing groove is formed on an inner wall of a side of the stuffing box 14 away from the pump head 11, that is, the inner wall of the side of the stuffing box 14 away from the pump head 11 expands radially outward, a step and a containing groove are formed on the inner wall of the stuffing box 14, a sealing assembly 16 is disposed in the containing groove, one end of the sealing assembly 16 abuts against an inner wall of an end portion of the containing groove close to the pump head 11, that is, one end of the sealing assembly 16 abuts against the step, and the sealing assembly 16 is in close contact with an outer wall of the plunger 15 and an inner wall of the containing groove, so as to seal a gap between the plunger 15 and the stuffing box 14, thereby improving the sealing performance of the present invention, a through, fluid entering the gap between the seal assembly 16 and the plunger 15 may pass through the through-hole into the return passage 141.
Further, as shown in fig. 1 and 2, the utility model provides a pump head assembly of single plunger type metering pump, wherein, seal assembly 16 includes first sealing member 161 and first clamping ring 162, the one end of first sealing member 161 supports to lean on the tip inner wall that the storage tank is close to pump head 11, namely the one end of first sealing member 161 supports to lean on the step, first clamping ring 162 pressure equipment is in the other end of first sealing member 161, exert pressure to first sealing member 161 through first clamping ring 162, thereby compress tightly first sealing member 161 in the gap between plunger 15 and stuffing box 14, be equipped with the through-hole that can communicate return channel 141 and working chamber on the lateral wall of first clamping ring 162, the fluid that gets into in the gap between seal assembly 16 and plunger 15 can get into return channel 141 through the through-hole.
Preferably, as shown in fig. 2, the present invention provides a pump head assembly for a single plunger metering pump, wherein the first sealing member 161 is a plurality of Y-shaped sealing members inserted in sequence, wherein the Y-shaped sealing members are conventional structures, which are not described again, the sealing lips of the plurality of Y-shaped sealing members face the pump head 11, since the first sealing member 161 is compressively mounted in the receiving groove, that is, the plurality of Y-shaped sealing members are compressively mounted in the receiving groove, as can be seen from the drawings, when the plurality of Y-shaped seals are compressed, the sealing lip of each Y-shaped seal expands radially toward the plunger 15 and the inner wall of the receiving groove, form from the tight effect through elastic deformation, fill up the gap between plunger 15 and the storage tank as far as, also fill up the gap between plunger 15 and packing box 14 exactly, improved greatly the utility model discloses a sealing performance.
As preferred, as shown in fig. 1 and 2, the utility model provides a pump head assembly of single plunger type measuring pump, wherein, the inside and outside both sides of first clamping ring 162 all are equipped with the annular groove in the position department that corresponds the through-hole that communicates return channel and working chamber, when first clamping ring 162 is installed in the storage tank, form a cushion chamber respectively in the inside and outside both sides of first clamping ring 162 for fluid in the gap between plunger 15 and packing box 14 can get into the inboard cushion chamber of first clamping ring 162 from the cushion chamber in the first clamping ring 162 outside through the through-hole on first clamping ring 162, or get into the cushion chamber in the first clamping ring 162 outside from the inboard cushion chamber of first clamping ring 162, and finally flow into in return channel 141. By providing a buffer chamber, a space is provided for buffering and temporarily storing the fluid when the fluid is more introduced into the gap between the plunger 15 and the stuffing box 14, thereby preventing the fluid from leaking when the fluid is more.
Further, as shown in fig. 1 and 2, the utility model provides a pump head assembly of single plunger type metering pump, wherein, seal assembly 16 still includes second sealing member 163 and second clamping ring 164, and the one end of second sealing member 163 is supported and is leaned on first clamping ring 162, and second sealing member 163 and first sealing member 161 are located the both ends of first clamping ring 162 respectively, and second clamping ring 164 is press-fitted in the other end of second sealing member 163, and that is first sealing member 161, first clamping ring 162, second sealing member 163, second clamping ring 164 oppress each other in order and lean on installing in the storage tank. Can increase the one deck through setting up second sealing member 163 and second clamping ring 164 and seal between plunger 15 and stuffing box 14, can further improve the utility model discloses a sealing performance.
Preferably, as shown in fig. 1, the present invention provides a pump head assembly of a single plunger metering pump, wherein the second seal 163 is a packing. The second sealing element 163 may also be any other type of sealing element capable of sealing, and the present invention is not limited thereto.
Further, as shown in fig. 1, the utility model provides a pump head subassembly of single plunger type measuring pump, wherein, the pump head subassembly of single plunger type measuring pump still includes gland 17, and gland 17 lid is located the tip that gland 14 keeps away from pump head 11, and gland 17 top supports second clamping ring 164, is equipped with the horizontal through-hole that can supply plunger 15 to pass on gland 17, closely the pressure equipment in the storage tank with seal assembly 16 through gland 17 promptly.
Preferably, the utility model provides a pump head subassembly of single plunger type measuring pump, wherein, the outer wall of plunger 15 coats and is equipped with the smooth coating surface, and the smooth coating surface can be for cladding material that can improve object surface smoothness such as ceramic coating or metallic coating.
Preferably, the present invention provides a pump head assembly for a single plunger metering pump, wherein the smooth plated surface has a roughness of no greater than 0.025 microns. When the roughness on smooth cladding material surface is not more than 0.025 micron, can effectively reduce the friction between plunger 15 and first sealing member 161, the second sealing member 163 to guarantee first sealing member 161, the life of second sealing member 163, reduce the utility model discloses a use cost.
As shown in fig. 3-5, the utility model also provides a single plunger type measuring pump, wherein, single plunger type measuring pump includes as above the pump head subassembly 1 of single plunger type measuring pump, and single plunger type measuring pump still includes pump body subassembly 2, pump head connecting piece 3, flow control subassembly 6, motor 4 and drive assembly 5, and the pump head subassembly 1 of single plunger type measuring pump passes through pump head connecting piece 3 and is connected with pump body subassembly 2, and motor 4 passes through drive assembly 5 and is connected with pump body subassembly 2, and flow control subassembly 6 is connected with pump body subassembly 2.
The utility model provides a single plunger type measuring pump and pump head subassembly thereof is when using, imbibition in-process, plunger 15 is to keeping away from the direction motion of pump head 11, the volume grow of working chamber, the pressure in working chamber and fluid passage 111 reduces, import check valve 12 is opened, fluid is inhaled in fluid passage 111 and the working chamber, in the flowing back process, plunger 15 is to the direction motion that is close to pump head 11, the volume of working chamber diminishes, the pressure in working chamber and fluid passage 111 increases, export check valve 13 opens, fluid is extruded to fluid passage 111 outside from export check valve 13; when the plunger 15 completes one-time liquid suction and liquid discharge, fluid is remained in a gap between the plunger 15 and the stuffing box 14 (or the sealing assembly 16), the fluid can flow into the return channel 141 (through a through hole on the sealing assembly 16) through the self gravity, and the fluid in the return channel 141 can be sucked into the fluid channel 111 at the next liquid suction.
Compared with the prior art, the utility model has the advantages as follows:
1. the utility model provides a single plunger type measuring pump and pump head subassembly thereof is through setting up backflow channel on the inner wall at the stuffing box, can make the fluid that gets into in the gap between plunger and the stuffing box flow into during backflow channel when reacing backflow channel, and when the imbibition, because the pressure in the fluid passage reduces, can be with the fluid among the backflow channel in the fluid suction flow path, simultaneously can prevent effectively that the fluid from flowing back to the gap between plunger and the stuffing box along backflow channel through set up the check valve on backflow channel in, prevent that the fluid from leaking from the gap between plunger and the stuffing box.
2. The utility model provides a single plunger type measuring pump and pump head subassembly thereof supports tip inner wall and the first clamping ring that leans on the storage tank respectively through the both ends that make first sealing member, install first sealing member in the storage tank with the mode of compressed, establish first sealing member into a plurality of Y type sealing members of pegging graft in order simultaneously, can be through the interference magnitude of the seal lip of a plurality of Y type sealing members and the pressure that the tip inner wall of first clamping ring and storage tank was applyed a plurality of Y type sealing members, make a plurality of Y type sealing members along radial expansion, produce from the tight effect through elastic deformation, plug up and the gap between storage tank inner wall and the plunger, further promote sealed effect, prevent fluid leakage.
3. The utility model provides a single plunger type measuring pump and pump head subassembly thereof can reduce the roughness on plunger surface through covering at the plunger surface and establishing smooth cladding material surface to reduce the plunger reciprocating motion in-process to the wearing and tearing of first sealing member and second sealing member, guaranteed the life of first sealing member and sealing member, reduced the utility model discloses a use cost.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (12)
1. A pump head assembly for a single plunger metering pump, comprising:
the pump head is provided with a longitudinally-through fluid channel, and the upper end and the lower end of the fluid channel are provided with one-way valves;
the stuffing box and the pump head are arranged vertically, the stuffing box is provided with a transversely through working cavity, and the working cavity is communicated with the fluid channel;
the plunger piston can be inserted in the working cavity in a sliding and sealing manner; it is characterized in that the preparation method is characterized in that,
and a backflow channel communicated with the working cavity and the fluid channel is formed in the side wall of the stuffing box, and a check valve capable of preventing fluid from flowing into the working cavity from the fluid channel is arranged on the backflow channel.
2. A pump head assembly for a single plunger metering pump as set forth in claim 1, wherein said return passageway is located internally of a bottom side wall of said stuffing box.
3. A pump head assembly for a single plunger metering pump as set forth in claim 1, wherein the one-way valve at the lower end of said fluid passageway is an inlet one-way valve and the one-way valve at the upper end of said fluid passageway is an outlet one-way valve.
4. A pump head assembly for a single plunger metering pump according to claim 1, wherein a receiving groove is formed in an inner wall of the stuffing box on a side away from the pump head, a sealing assembly is disposed in the receiving groove, one end of the sealing assembly abuts against an inner wall of an end portion of the receiving groove close to the pump head, the sealing assembly is in close fitting contact with an outer wall of the plunger, and a through hole capable of communicating the return channel with the working chamber is formed in the sealing assembly.
5. A pump head assembly for a single plunger metering pump according to claim 4, wherein the sealing assembly comprises a first sealing member and a first compression ring, one end of the first sealing member abuts against the inner wall of the end portion of the accommodating groove close to the pump head, the first compression ring is press-fitted to the other end of the first sealing member, and a through hole capable of communicating the return channel and the working chamber is formed in a side wall of the first compression ring.
6. A pump head assembly for a single plunger metering pump according to claim 5, wherein the first seal is a plurality of serially interposed Y-seals, the sealing lips of each of the plurality of Y-seals facing the pump head.
7. A pump head assembly for a single plunger metering pump according to claim 5, wherein the seal assembly further comprises a second seal and a second compression ring, one end of the second seal abuts against the first compression ring, and the second seal and the first seal are respectively located at two ends of the first compression ring, and the second compression ring is press-fitted to the other end of the second seal.
8. A pump head assembly for a single plunger metering pump as set forth in claim 7, wherein said second seal is a packing.
9. A pump head assembly for a single plunger metering pump according to claim 7, wherein the pump head assembly for a single plunger metering pump further comprises a gland cover, the gland cover is disposed at an end of the gland box remote from the pump head, the gland cover abuts against the second compression ring, and the gland cover is provided with a transverse through hole through which the plunger can pass.
10. A pump head assembly for a single plunger metering pump as set forth in claim 1, wherein the outer wall of the plunger is coated with a smooth plated surface.
11. A pump head assembly for a single plunger metering pump according to claim 10, wherein the smooth plated surface has a roughness of no more than 0.025 microns.
12. A single plunger metering pump, characterized in that it comprises a pump head assembly of the single plunger metering pump according to any one of claims 1 to 11, and further comprises a pump body assembly, a pump head connector, a flow regulating assembly, a motor and a transmission assembly, the pump head assembly of the single plunger metering pump being connected to the pump body assembly through the pump head connector, the motor being connected to the pump body assembly through the transmission assembly, and the flow regulating assembly being connected to the pump body 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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- 2015-03-31 CN CN201520188630.6U patent/CN204627970U/en active Active
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| 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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