CN219242190U - Small-volume high-pressure plunger pump - Google Patents
Small-volume high-pressure plunger pump Download PDFInfo
- Publication number
- CN219242190U CN219242190U CN202320682613.2U CN202320682613U CN219242190U CN 219242190 U CN219242190 U CN 219242190U CN 202320682613 U CN202320682613 U CN 202320682613U CN 219242190 U CN219242190 U CN 219242190U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil outlet
- annular
- designed
- pump
- 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.)
- Active
Links
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to a small-volume high-pressure plunger pump which comprises a pump body, a plunger rod, a spring, a plunger head, an oil suction valve group and an oil outlet valve group, wherein the pump body is designed into a rectangular valve block, a front-back through pump cavity is transversely arranged in the middle of the pump body, an annular bulge is arranged at the outer side of one end of the pump cavity, the pump cavity is communicated with an intermediate hole of the annular bulge, the inner side of the opening of the other end of the pump cavity is provided with the oil suction valve group, the middle of the upper end of the pump body is provided with the oil outlet flow passage, the lower end of the oil outlet flow passage is communicated with the pump cavity, the upper end of the oil outlet flow passage is communicated with the upper end face of the pump body, the inner side of an outlet of the oil outlet flow passage is provided with the oil outlet valve group, one end of the plunger head is arranged at one end of the plunger rod, and the other end of the plunger rod is slidably and hermetically arranged in the intermediate hole of the annular bulge and the front hole of the pump cavity. The advantage is design benefit, and is rational in infrastructure compact, and oil absorption valves, play oil valves are all integrated inside the pump body, and is small, and the filter screen is direct to be installed in the oil suction port side simultaneously, reduces overall structure volume, convenient to install and use.
Description
Technical Field
The utility model relates to the field of high-pressure pumps, in particular to a small-volume high-pressure plunger pump.
Background
Plunger pumps are an important device of hydraulic systems. The plunger reciprocates in the cylinder body to change the volume of the sealed working cavity, so as to realize oil absorption and pressure oil. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow adjustment and the like, and is widely applied to occasions requiring high pressure, high flow and flow adjustment, such as hydraulic presses, engineering machinery and ships. However, when the prior plunger pumps are used, a plurality of radial plunger pumps are used in series, one eccentric shaft drives a plurality of high-pressure plunger pumps, so that the volume of the high-pressure plunger pumps cannot be excessively large, a plurality of installation and cooperation are not realized, no installation space position exists, and the high-pressure plunger pumps with smaller volume and enough pressure are required to be developed. Meanwhile, an oil inlet filter device needs to be designed on the oil suction side, and a large volume is occupied.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the small-volume high-pressure plunger pump which is ingenious in design, reasonable and compact in structure, small in volume and convenient to install and use.
The utility model provides a small-size high-pressure plunger pump, it includes the pump body, the plunger rod, a spring, the plunger head, oil absorption valves, go out the oil valves, the pump body design is rectangular valve piece, the pump chamber that link up around the horizontal design in the middle of the pump body, the annular bulge is designed in pump chamber one end outside, pump chamber and the bellied centre bore UNICOM of annular, oil absorption valves is installed to the other end oral area inboard of pump chamber, the oil outlet runner is designed in the middle of the pump body upper end, oil outlet runner lower extreme UNICOM pump chamber, oil outlet runner upper end UNICOM pump body upper end face, oil outlet valves is installed to the export inboard of oil outlet runner, the plunger head is installed to plunger rod one end, the plunger rod other end sliding seal installs the bellied centre bore of annular and the front portion downthehole of pump chamber, the spring housing is in the bellied outside of annular bulge, and spring one end top is in the plunger head inboard, the spring other end top is in the pump body outside, the outside oil inlet side design has the filter screen.
The annular bulge is designed into an annular conical column, and the annular conical column is designed into an outer thin root part with thick thickness; the spring is designed into a conical columnar spring, one end with a thick diameter is sleeved on the outer side of the root of the annular conical column and is propped against the outer side surface of the pump body, and one end with a thin diameter is sleeved on the outer side of the plunger rod and is propped against the inner side of the plunger head.
The inner diameter of the middle hole in the annular bulge is designed to be 6-16mm; the two sides of the pump body are respectively provided with a bolt hole, the two bolt holes are positioned on the two sides of the pump cavity and are parallel to the oil outlet flow passage, the inner side of the opening of the oil outlet flow passage is provided with an annular step, and the annular step is internally provided with a sealing ring.
The oil suction valve group comprises an oil suction valve body, an oil suction valve plate and a circular baffle with holes, wherein a first circular groove for installing the oil suction valve body of the oil suction valve group is arranged in the inlet and outlet side of the pump cavity, an inner thread is arranged in the circular groove, the oil suction valve body is designed into a cylinder, an outer thread is arranged on the outer side of the oil suction valve body, an oil inlet through hole is arranged in the middle of the oil suction valve body, a first annular groove is arranged in the oil outlet side of the oil inlet through hole, a second annular groove is also arranged on the outer side of the first annular groove, the inner diameter of the second annular groove is larger than that of the first annular groove, and the inner diameter of the first annular groove is larger than that of the oil inlet through hole; the oil suction valve block is slidably arranged in the first annular groove, the perforated circular baffle is arranged in the second annular groove and is blocked at the outer side of the first annular groove, the oil suction valve body is rotatably arranged in the first annular groove in a threaded fit manner, and the root end face of the first annular groove is in sealing fit with the oil suction valve block; a plurality of semicircular grooves are designed on the inner peripheral wall of the first annular groove, and the end parts of the semicircular grooves are correspondingly communicated with the round holes on the round baffle plates with holes.
The oil suction valve group further comprises an oil suction conical spring, an annular groove is formed in the inner side of the root end face of the first annular groove, the oil suction conical spring is supported and installed in the first annular groove, the thin end of the oil suction conical spring is propped against one side of the oil suction valve plate, and the other end of the oil suction conical spring is propped against the inner side of the perforated round baffle plate.
The oil inlet side end surface of the oil suction valve body is provided with a cross groove or a plum blossom groove.
The oil outlet valve block comprises an oil outlet valve body, an oil outlet valve block and a circular ring valve seat, a second circular groove for mounting the oil outlet valve body of the oil outlet valve block is designed on the inner side of an oil outlet flow channel outlet of the pump body, the oil outlet valve body is designed into a cylinder, a first circular groove is designed in the middle of the oil outlet valve body, a second circular groove is designed on the lower port portion of the first circular groove, the inner diameter of the second circular groove is larger than that of the first circular groove, the lower end of the second circular groove is communicated with the lower end face of the oil outlet valve body, a plurality of arc grooves are designed on the periphery of the upper end of the oil outlet valve body, the upper end of each arc groove is communicated with the upper end face of the oil outlet valve body, the bottom of each arc groove is communicated with the upper end of the corresponding first circular groove, the circular ring valve seat is mounted in the second circular groove, the inner diameter of the circular ring valve seat is smaller than that of the first circular groove, the oil outlet valve block is slidably mounted in the first circular groove, and the end face of the oil outlet valve block is in sealing fit with the upper end face of the circular ring valve seat.
The outside design of play oil valve body have the external screw thread, the second circular slot inboard design of the pump body has the internal screw thread, the play oil valve body passes through screw-thread fit and installs in the second circular slot of the pump body.
The oil outlet valve group further comprises an oil outlet conical spring, an annular bulge is arranged at the upper end of the annular valve seat and extends into the first circular groove for a certain distance, an annular clamping groove is formed between one circle of the annular bulge and the first circular groove, the oil outlet conical spring is positioned in the first circular groove, the thin end of the oil outlet conical spring is propped against the upper surface of the oil outlet valve plate, and the thick end of the oil outlet conical spring is propped against the bottom of the first circular groove; the lower end face of the oil outlet valve plate is in sealing fit with the upper end face of the annular bulge.
The filter screen design into the tubulose filter screen, tubulose filter screen cover is outside the oil feed side of oil absorption valves, the outside at the pump body is fixed through the clamp plate to tubulose filter screen a week, the clamp plate designs into the rectangular plate, open in the middle of the rectangular plate has the round hole, the rectangular plate four corners design has the mounting hole, the pump body outside corresponds the mounting hole design threaded hole, the rectangular plate passes through the round hole cover in the tubulose filter screen outside and the rectangular plate presses on the annular turn-over of a week of tubulose filter screen, the rectangular plate four corners passes the mounting hole through the screw and locks threaded hole on the pump body outside.
The utility model has the advantages of ingenious design, reasonable and compact structure, small volume, and convenient installation and use, and the oil suction valve group and the oil outlet valve group are integrated in the pump body, and meanwhile, the filter screen is directly arranged on the side surface of the oil suction port, so that the volume of the whole structure is reduced.
Drawings
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is a side view of the present utility model.
Fig. 3 is a cross-sectional view taken along direction AA in fig. 1.
Fig. 4 is a schematic view of the annular projection of the present utility model designed as an annular conical column.
Fig. 5 is a schematic side view of an application of the present utility model.
Fig. 6 is a schematic view of an application of the utility model from below.
Detailed Description
Referring to the accompanying drawings 1-6, the small-volume high-pressure plunger pump comprises a pump body 1, a plunger rod 2, a spring 3, a plunger head 4, an oil suction valve group 5 and an oil discharge valve group 6, wherein the pump body 1 is designed into a rectangular valve block, a front-back through pump cavity 11 is transversely designed in the middle of the pump body 1, an annular bulge 7 is designed at the outer side of one end of the pump cavity 11, the pump cavity 11 is communicated with a middle hole 71 of the annular bulge 7, the oil suction valve group 5 is installed at the inner side of the other end opening of the pump cavity 11, an oil discharge flow passage 12 is designed in the middle of the upper end of the pump body 1, the lower end of the oil discharge flow passage 12 is communicated with the pump cavity 11, the upper end of the oil discharge flow passage 12 is communicated with the upper end face of the pump body 1, the oil discharge valve group 6 is installed at the inner side of the outlet of the oil discharge flow passage 12, the plunger head 4 is installed at one end of the plunger rod 2, the other end of the plunger rod 2 is slidably and hermetically installed in the middle hole 71 of the annular bulge 7 and the front hole of the pump cavity 11, the spring 3 is sleeved at the outer side of the annular bulge 7, one end of the spring 3 is propped against the inner side of the plunger head 4, the other end of the spring 3 is propped against the outer side of the pump body 1, and the filter screen 8 is designed at the outer oil inlet side of the oil suction valve group 5.
The annular bulge 7 is designed into an annular conical column 70, and the annular conical column 70 is designed into an outer thin root part with thick thickness; the spring 3 is designed into a conical columnar spring 30, one end with a thick diameter of the conical columnar spring 30 is sleeved outside the root of the annular conical column and is propped against the outer side surface of the pump body 1, one end with a thin diameter of the conical columnar spring 30 is sleeved outside the plunger rod 2 and is propped against the inner side of the plunger head 4. The annular bulge is generally designed into a hollow cylinder shape and is designed into an annular conical column, when the middle hole 71 (also a part of a pump cavity matched with a plunger rod) is replaced by a large aperture, the outer annular cavity wall is necessarily thinned under the condition that the size of the pump body is not changed, when the aperture is 15-16mm, the aperture can only reach 35 Mpa, thus high pressure 70Mpa can not be realized, and once the pressure is too high, leakage occurs between the middle hole of the annular bulge and the plunger rod. The design designs the annular bulge 7 into an annular conical column, so that the wall thickness of the annular bulge is changed into a taper structure gradually thickened from the outer side to the inner side, and the traditional cylindrical spring is also changed into a corresponding conical columnar spring, thus the diameter of a plunger rod is increased to 15-16mm under the condition that the volume of a pump body is not increased, and the leakage problem can still be avoided when the high pressure of 70Mpa is still realized. The diameter of the plunger rod is increased, the flow is also increased, and under the condition of high pressure, quick high-pressure oiling can be realized, so that the efficiency is high.
The inner diameter of the middle hole 71 in the annular bulge 7 is designed to be 6-16mm; two sides of the pump body 1 are respectively provided with a bolt hole 13, the two bolt holes 13 are positioned at two sides of the pump cavity 11 and are parallel to the oil outlet flow passage 12, an annular step is arranged at the inner side of the opening part of the oil outlet flow passage 12, and a sealing ring 14 is arranged in the annular step. The inner diameter of the middle hole in the annular bulge 7 is designed to be 6-16mm, the flow is also changed from small to large, when the multistage radial plunger pump is assembled, a customer can install the plunger pump with the inner diameter of the middle hole according to the needs of the customer, the pump body is inconvenient to design, the replacement is convenient, the flow change is realized by replacing the plunger pumps with different pore diameters, the needs of more occasions are met, and the application range is wider. The annular bulge can be combined to design an annular conical column, so that the high-pressure large-flow operation can be met under the condition that the volume of the pump body is not changed, the application range of the utility model is further enlarged, and the application occasion is wider. When the sealing ring 14 is applied, the lower end of the valve body of the multistage radial plunger pump is in contact sealing fit when the pump body is installed and applied.
The oil suction valve group 5 comprises an oil suction valve body 51, an oil suction valve plate 52 and a circular baffle plate 53 with holes, a first circular groove 54 for installing the oil suction valve body 51 of the oil suction valve group 5 is designed in the inlet and outlet side of the pump cavity 11, an internal thread is designed in the inner side of the circular groove, the oil suction valve body 51 is designed into a cylinder, an external thread is designed in the outer side of the oil suction valve body 51, an oil inlet through hole 55 is designed in the middle of the oil suction valve body 51, a first annular groove 56 is designed in the oil outlet side of the oil inlet through hole 55, a second annular groove 57 is also designed in the outer side of the first annular groove 56, the inner diameter of the second annular groove 57 is larger than the first annular groove 56, and the inner diameter of the first annular groove 56 is larger than the oil inlet through hole 55; the oil suction valve plate 52 is slidably mounted in the first annular groove 56, the perforated circular baffle 53 is mounted in the second annular groove 57, the perforated circular baffle 53 is blocked outside the first annular groove 56, the oil suction valve body 51 is rotatably mounted in the first annular groove 54 through threaded fit, and the root end face of the first annular groove 56 is in sealing fit with the oil suction valve plate 52. A plurality of semicircular grooves 561 are designed on the inner peripheral wall of the first annular groove 56, and the ends of the semicircular grooves 561 are correspondingly communicated with the round holes on the round baffle plates 53 with holes.
The oil suction valve group 5 further comprises an oil suction conical spring 58, an annular groove is designed on the inner side of the root end face of the first annular groove 56, the oil suction conical spring 58 is supported and installed in the first annular groove 56, the thin end of the oil suction conical spring 58 is propped against one side of the oil suction valve plate 52, and the thick end of the oil suction conical spring 58 is propped against the inner side of the perforated circular baffle plate 53.
The oil inlet side end surface of the oil suction valve body 51 is provided with a cross-shaped groove or a plum blossom-shaped groove 59. The cross-shaped groove or plum blossom-shaped groove 59 is designed to facilitate the rotary installation of the oil absorbing valve body in the first circular groove.
The oil outlet valve block 6 comprises an oil outlet valve body 61, an oil outlet valve block 62 and a circular ring valve seat 63, a second circular groove 64 for mounting the oil outlet valve body 61 of the oil outlet valve block 6 is designed on the inner side of an outlet of the oil outlet flow channel 12 of the pump body 1, the oil outlet valve body 61 is designed into a cylinder, a first circular groove 65 is designed in the middle of the oil outlet valve body 61, a second circular groove 66 is designed at the lower port part of the first circular groove 65, the inner diameter of the second circular groove 66 is larger than that of the first circular groove 65, the lower end of the second circular groove 66 is communicated with the lower end face of the oil outlet valve body 61, a plurality of arc grooves 67 are designed on the periphery of the upper end of the oil outlet valve body 61, the upper end of the arc grooves 67 are communicated with the upper end face of the oil outlet valve body 61, the circular ring valve seat 63 is mounted in the second circular groove 66, the inner diameter of the circular ring valve seat 63 is smaller than that of the first circular groove 65, the oil outlet 62 is slidingly mounted in the first circular groove 65, and the end face of the oil outlet valve block 62 is matched with the circular ring valve seat 63.
The outer side of the oil outlet valve body 61 is provided with external threads, the inner side of the second circular groove 64 of the pump body 1 is provided with internal threads, and the oil outlet valve body 61 is installed in the second circular groove 64 of the pump body 1 through threaded fit.
The oil outlet valve group 6 further comprises an oil outlet conical spring 68, an annular protrusion 7 is arranged at the upper end of the annular valve seat 63, the annular protrusion 7 extends into the first circular groove 65 for a certain distance, an annular clamping groove is formed between the circumference of the annular protrusion 7 and the first circular groove 65, the oil outlet conical spring 68 is positioned in the first circular groove 65, the thin end of the oil outlet conical spring 68 is propped against the oil outlet valve plate 62, and the thick end of the oil outlet conical spring 68 is propped against the first circular groove 65; the lower end face of the oil outlet valve plate 62 is in sealing fit with the upper end face of the annular protrusion 7.
The filter screen 8 design into the tubulose filter screen 8, tubulose filter screen 8 cover is in the oil feed side outside of oil absorption valves 5, tubulose filter screen 8 a week is fixed in the outside of the pump body 1 through clamp plate 81, clamp plate 81 designs into the rectangular plate, open in the middle of the rectangular plate has the round hole, the rectangular plate four corners design has the mounting hole, the pump body 1 outside corresponds the mounting hole design and has the screw hole, the rectangular plate passes through the round hole cover in tub form filter screen 8 outside and the rectangular plate presses on the annular turn over of a week of tubulose filter screen 8, the rectangular plate four corners passes the mounting hole through the screw and locks threaded hole above the pump body 1 outside.
When the oil pump is used, the pump body and the annular bulge are integrally manufactured and formed, a middle circular groove is designed in the middle of a pump cavity in the pump body, a large circular groove is designed on the oil inlet side of the middle circular groove, a first circular groove is designed on the outer side of the large circular groove (used for internally installing an oil suction valve group), a small circular groove is designed on the other side of the middle circular groove, the inner diameter design of the small circular groove is identical to that of a middle hole in the annular bulge, the small circular groove is communicated with the middle circular groove and the large circular groove, the upper end of an oil outlet channel is designed as a second circular groove (used for internally installing the oil suction valve group), a filter screen is fixedly arranged on the outer side of the oil suction valve group and used for filtering foreign matters in hydraulic oil, and the like, a plunger rod is slidably inserted into the middle hole of the annular bulge, a spring is supported between a plunger head and the pump body and used for resetting the plunger rod, the pump body can be cooperatively arranged on the upper surface of a valve body 9 of the multistage radial plunger pump, the inner diameter of the small circular groove is fixed below the valve body 9 through a threaded hole, and the eccentric wheel is slidably abutted against the outer side of the plunger head so as to realize reciprocating motion; when the oil pump works, when the spring on the outer side of the plunger rod is extruded and compressed by the eccentric cam, the plunger rod is pushed into the pump cavity, the oil suction valve plate of the oil suction valve group is pressed and slides to the oil inlet side at the first annular groove under the action of the oil suction conical spring, the oil suction valve plate is in sealing fit with the root end face of the first annular groove, hydraulic oil in the pump cavity enters the oil outlet flow passage through the large circular groove and the middle circular groove, the oil outlet valve plate of the oil outlet valve group is pressed upwards, the force of the oil outlet conical spring is overcome, the oil outlet valve plate slides upwards, the oil outlet conical spring is extruded into a sheet shape, hydraulic oil in the oil outlet flow passage enters the first circular groove after passing through the circular ring valve seat, and the outlets on the outer side of the oil outlet valve group are communicated through the circular grooves on the periphery, so that oil outlet is completed; when oil is absorbed, the plunger rod is reset under the action of a spring, the plunger rod is extracted outwards from the pump cavity, at the moment, the oil pressure in the pump cavity is reduced, an oil outlet valve plate of the oil outlet valve group slides inwards and downwards to be in sealing contact with the upper end surface of the circular ring valve seat under the action of an oil outlet conical spring and the action of oil pressure at the outlet side, the oil outlet valve group is closed, meanwhile, the oil inlet oil pressure outside the oil inlet valve plate of the oil inlet valve group is higher than the oil pressure inside the pump cavity under the action of the pressure lowering action of the pump cavity, the supporting force of the oil absorption conical spring is overcome, the oil absorption valve plate is pushed inwards, the oil absorption conical spring is pressed into a sheet shape, hydraulic oil enters an oil inlet through a filter screen and then enters a first annular groove, and round holes with holes are communicated through semicircular grooves at the periphery, and finally the inside the pump cavity is filled, so that oil inlet is finished.
Claims (10)
1. The utility model provides a small-size high-pressure plunger pump, a serial communication port, it includes the pump body, the plunger rod, a spring, the plunger head, oil absorption valves, go out the oil valves, the pump body designs into the rectangle valve piece, transversely design the pump chamber that link up around in the middle of the pump body, the annular bulge is designed in pump chamber one end outside, pump chamber and the bellied centre bore UNICOM of annular, oil absorption valves is installed to the other end oral area inboard of pump chamber, the oil outlet runner is designed in the middle of the pump body upper end, oil outlet runner lower extreme UNICOM pump chamber, oil outlet runner upper end UNICOM pump body upper end terminal surface, oil outlet valves is installed to the export inboard of oil outlet runner, the plunger head is installed to plunger rod one end, the plunger rod other end sliding seal installs the bellied centre bore of annular and the anterior downthehole of pump chamber, the spring housing is in the annular bulge outside, and spring one end top is in the plunger inner side, the spring other end top is in the pump body outside, the outside oil inlet side of oil absorption valves designs the filter screen.
2. The small-volume high-pressure plunger pump according to claim 1, wherein the annular bulge is designed into an annular conical column, and the annular conical column is designed into an outer thin root part with a thick diameter; the spring is designed into a conical columnar spring, one end with a thick diameter is sleeved on the outer side of the root of the annular conical column and is propped against the outer side surface of the pump body, and one end with a thin diameter is sleeved on the outer side of the plunger rod and is propped against the inner side of the plunger head.
3. The small-volume high-pressure plunger pump according to claim 1 or 2, wherein the inner diameter of the middle hole inside the annular protrusion is designed to be 6-16mm; the two sides of the pump body are respectively provided with a bolt hole, the two bolt holes are positioned on the two sides of the pump cavity and are parallel to the oil outlet flow passage, the inner side of the opening of the oil outlet flow passage is provided with an annular step, and the annular step is internally provided with a sealing ring.
4. The small-volume high-pressure plunger pump according to claim 1, wherein the oil suction valve group comprises an oil suction valve body, an oil suction valve plate and a circular baffle plate with holes, a first circular groove for installing the oil suction valve body of the oil suction valve group is designed in the inlet and outlet side of the pump cavity, an internal thread is designed in the inner side of the circular groove, the oil suction valve body is designed into a cylinder, an external thread is designed in the outer side of the oil suction valve body, an oil inlet through hole is designed in the middle of the oil suction valve body, a first annular groove is designed in the oil outlet side of the oil inlet through hole, a second annular groove is also designed in the outer side of the first annular groove, the inner diameter of the second annular groove is larger than that of the first annular groove, and the inner diameter of the first annular groove is larger than the oil inlet through hole; the oil suction valve block is slidably arranged in the first annular groove, the perforated circular baffle is arranged in the second annular groove and is blocked at the outer side of the first annular groove, the oil suction valve body is rotatably arranged in the first annular groove in a threaded fit manner, and the root end face of the first annular groove is in sealing fit with the oil suction valve block; a plurality of semicircular grooves are designed on the inner peripheral wall of the first annular groove, and the end parts of the semicircular grooves are correspondingly communicated with the round holes on the round baffle plates with holes.
5. The small-volume high-pressure plunger pump according to claim 4, wherein the oil suction valve group further comprises an oil suction conical spring, an annular groove is designed on the inner side of the root end face of the first annular groove, the oil suction conical spring is supported and installed in the first annular groove, the thin end of the oil suction conical spring is propped against one side of the oil suction valve plate, and the other end of the oil suction conical spring is propped against the inner side of the perforated round baffle plate.
6. The small-volume high-pressure plunger pump according to claim 4, wherein the oil inlet side end surface of the oil suction valve body is provided with a cross-shaped groove or a quincuncial groove.
7. The small-volume high-pressure plunger pump according to claim 1, wherein the oil outlet valve block comprises an oil outlet valve body, an oil outlet valve block and a circular ring valve seat, a second circular groove for installing the oil outlet valve block of the oil outlet valve block is designed on the inner side of an oil outlet flow passage outlet of the pump body, the oil outlet valve body is designed into a cylinder, a first circular groove is designed in the middle of the oil outlet valve block, a second circular groove is designed at the lower port part of the first circular groove, the inner diameter of the second circular groove is larger than that of the first circular groove, the lower end of the second circular groove is communicated with the lower end face of the oil outlet valve block, a plurality of arc grooves are designed on the periphery of the upper end of the oil outlet valve block, the upper ends of the arc grooves are communicated with the upper end face of the oil outlet valve block, the circular ring valve seat is installed in the second circular groove, the inner diameter of the circular ring valve seat is smaller than that of the first circular groove, the oil outlet valve block is slidably installed in the first circular groove, and the end face of the oil outlet valve block is in sealing fit with the upper end face of the circular ring valve seat.
8. The small-volume high-pressure plunger pump according to claim 7, wherein the outer side of the oil outlet valve body is provided with external threads, the inner side of the second circular groove of the pump body is provided with internal threads, and the oil outlet valve body is installed in the second circular groove of the pump body through threaded fit.
9. The small-volume high-pressure plunger pump according to claim 7, wherein the oil outlet valve group further comprises an oil outlet conical spring, an annular bulge is arranged at the upper end of the annular valve seat and extends into the first circular groove for a certain distance, an annular clamping groove is formed between one circle of the annular bulge and the first circular groove, the oil outlet conical spring is positioned in the first circular groove, the thin end of the oil outlet conical spring is propped against the oil outlet valve plate, and the thick end of the oil outlet conical spring is propped against the bottom of the first circular groove; the lower end face of the oil outlet valve plate is in sealing fit with the upper end face of the annular bulge.
10. The small-size high-pressure plunger pump according to claim 1, wherein the filter screen is designed into a basin-shaped filter screen, the basin-shaped filter screen cover is arranged outside an oil inlet side of the oil suction valve group, one periphery of the basin-shaped filter screen is fixed on the outer side of the pump body through a pressing plate, the pressing plate is designed into a rectangular plate, a round hole is formed in the middle of the rectangular plate, mounting holes are formed in four corners of the rectangular plate, threaded holes are formed in the outer side of the pump body corresponding to the mounting holes, the rectangular plate is sleeved on the outer side of the basin-shaped filter screen through the round holes, the rectangular plate is pressed on a periphery annular flanging of the basin-shaped filter screen, and four corners of the rectangular plate are locked in the threaded holes in the outer side of the pump body through screws passing through the mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320682613.2U CN219242190U (en) | 2023-03-31 | 2023-03-31 | Small-volume high-pressure plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320682613.2U CN219242190U (en) | 2023-03-31 | 2023-03-31 | Small-volume high-pressure plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219242190U true CN219242190U (en) | 2023-06-23 |
Family
ID=86842939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320682613.2U Active CN219242190U (en) | 2023-03-31 | 2023-03-31 | Small-volume high-pressure plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219242190U (en) |
-
2023
- 2023-03-31 CN CN202320682613.2U patent/CN219242190U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105952633A (en) | Straight-through combination valve applied to high-pressure reciprocation plunger pump hydraulic end | |
| CN106015675B (en) | A kind of one-way pressure-regulating overflow valve with thrust bearing | |
| CN110131477B (en) | Multistage throttle labyrinth relief pressure valve | |
| CN219242190U (en) | Small-volume high-pressure plunger pump | |
| CN205806597U (en) | A kind of one-way pressure-regulating overflow valve of band thrust bearing | |
| CN211799193U (en) | Self-sealing oil absorption filter | |
| CN202039996U (en) | Fuel oil filter seat and fuel oil filter with same | |
| CN109340100B (en) | A kind of plunger pump | |
| CN116292164A (en) | Integrated high-pressure pump with changeable flow | |
| CN104088777A (en) | Metering pump with quantitatively-compressed diaphragm | |
| CN217348991U (en) | Suck-back pressing pump | |
| CN109611305A (en) | A kind of booster water pump | |
| CN205243586U (en) | Engine oil filter | |
| CN110486279B (en) | Annular vacuum pump | |
| CN209115300U (en) | A kind of high pressure cylinder body and pressure-air compression set | |
| CN218407715U (en) | Reciprocating pneumatic pump and fluid supercharging device | |
| CN219993854U (en) | Foot pump for mechanical operating table | |
| CN114148937B (en) | Novel hydraulic cylinder | |
| CN113217355A (en) | Diaphragm pump pressure relief structure and diaphragm pump | |
| CN209294158U (en) | A kind of check valve and hydraulic tool for hydraulic tool | |
| CN208252290U (en) | A kind of squeezer of integrated high pressure plunger-type fuel pump driving | |
| CN110529459A (en) | A kind of Quick cylinder | |
| CN111852811A (en) | Small-size domestic suction pump | |
| CN209041585U (en) | A kind of split type delivery valve | |
| CN218325225U (en) | Two-stage hydrogen medium diaphragm compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |