CN216077465U - Piston pump capable of lubricating - Google Patents
Piston pump capable of lubricating Download PDFInfo
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- CN216077465U CN216077465U CN202122214803.5U CN202122214803U CN216077465U CN 216077465 U CN216077465 U CN 216077465U CN 202122214803 U CN202122214803 U CN 202122214803U CN 216077465 U CN216077465 U CN 216077465U
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- lubricating
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Abstract
The utility model discloses a piston pump capable of being lubricated, which comprises a motor assembly, a piston pump shell, a piston rod and a one-way valve, wherein the piston shell is internally hollow to form a piston cavity; the outer wall of the piston compression part is also provided with a lubricating groove along the circumferential direction, the lubricating groove and the inner wall of the piston cavity are provided with a closed oil storage bin, and lubricating oil is filled in the oil storage bin. The lubricating groove is arranged and forms an oil storage bin with the inner wall of the piston cavity, so that lubricating oil can continuously seep out during the reciprocating motion of the piston rod, the piston cavity and the piston sealing ring are continuously lubricated, the reciprocating operation of the piston pump is ensured to be smooth, the abrasion is reduced, and the service life of the piston pump is prolonged.
Description
Technical Field
The utility model belongs to the technical field of piston pump lubrication, and particularly relates to a piston pump capable of being lubricated.
Background
The piston pump is a mechanical device with wide application range and large use amount, and is widely applied to automatic throwing devices such as washing machines, dish washing machines and the like in petroleum, chemical engineering, energy and human daily life.
When current piston pump was applied to in the household electrical appliances, most lubricating arrangement can not make the inside abundant lubrication that obtains of piston pump, therefore the piston pump is after long-time operation, causes easily and produces the gap with wearing and tearing between parts such as piston cavity to produce to reveal and lead to the liquid in the corresponding household electrical appliances to put in the flow not accurate enough, influence the use, still influence equipment life simultaneously.
Disclosure of Invention
Aiming at the defect that a piston pump applied to household appliances in the prior art has no lubricating structure, the utility model provides the piston pump capable of lubricating, and the structure can ensure that lubricating grease continuously seeps out of a piston in the operation process, so that a sealing ring and a piston cavity are lubricated, the piston pump is ensured to smoothly run back and forth, the abrasion is reduced, and the service life of the piston pump is prolonged.
The utility model aims to be realized by the following technical scheme:
a piston pump capable of being lubricated comprises a motor assembly, a piston pump shell, a piston rod and a one-way valve, wherein the piston shell is arranged in a hollow mode to form a piston cavity, the piston rod is installed in the piston cavity, the piston rod comprises a connecting driving part connected with the motor assembly and a piston compression part used for driving the one-way valve, the piston compression part is columnar, two sealing grooves are formed in the outer wall of the piston compression part along the circumferential direction of the piston compression part, piston sealing rings are sleeved in the sealing grooves, and the outer walls of the piston sealing rings are tightly attached to the inner wall of the piston cavity; the outer wall of the piston compression part is also provided with a lubricating groove along the circumferential direction, the lubricating groove and the inner wall of the piston cavity are provided with a closed oil storage bin, and lubricating oil is filled in the oil storage bin.
In the scheme, the piston rod drives the lubricating grooves to move together in the reciprocating motion process, and when the piston rod moves in a first one-way mode, lubricating oil in the lubricating grooves seeps out and is firstly adhered to the inner wall of the piston cavity, so that the lubrication of the piston cavity is realized; along with the return movement of the piston rod, the lubricating oil adhered to the inner wall of the piston cavity is transferred to the piston sealing ring again, so that the lubrication of the piston sealing ring is realized, the lubricating oil continuously seeps out during the reciprocating motion process of the piston rod, and the piston cavity and the piston sealing ring are continuously lubricated, the smooth reciprocating operation of the piston pump is ensured, the abrasion is reduced, and the service life of the piston pump is prolonged.
Preferably, a plurality of reinforcing ribs are further provided inside the lubrication groove. Set up the strengthening rib, support the piston rod on the one hand, guarantee the motion intensity of piston rod, on the other hand can make lubricating oil evenly distributed in the oil storage storehouse to make piston cavity inner wall and piston seal's lubrication more even, guarantee simultaneously before lubricating oil has used up that piston cavity inner wall homoenergetic is lubricated simultaneously.
Preferably, the piston sealing ring is a Y-shaped sealing ring, the Y-shaped sealing ring comprises a lip portion and a back portion, and the back portions of the two Y-shaped sealing rings are arranged adjacently.
In the above arrangement, the sealing effect and the service life of the Y-shaped sealing ring are both higher than those of the O-shaped sealing ring, and the unidirectional sealing effect is ensured on the side with high opposite pressure of the lip part of the Y-shaped sealing ring in the movement process of the piston, so that the Y-shaped sealing ring is installed back to back, the sealing effect on two sides of the sealing groove is ensured, and the lubricating oil is prevented from being leaked and firmly and reliably adhered to the piston sealing ring, so that the piston sealing ring keeps good sealing effect.
Preferably, the connection driving part is provided with a driving connection hole, the motor assembly is connected with a cam, and the cam is inserted into the driving connection hole. The arrangement is adopted, so that the motor assembly drives the piston rod to reciprocate.
Preferably, the check valve is arranged at one end of the piston pump housing close to the piston compression part, and comprises a check valve for liquid inlet and a check valve for liquid discharge which are arranged in parallel, and the two check valves are both positioned on the cavity wall of the piston cavity. The one-way valve for liquid inlet and the one-way valve for liquid discharge are arranged to realize the function of only pumping liquid or only delivering liquid when the piston pump moves.
Preferably, the check valves comprise a support frame, the middle part of the support frame is connected with an umbrella-shaped check valve core in a sliding mode, an O-shaped ring is embedded in the outer wall of the support frame along the circumferential direction of the support frame, and the umbrella-shaped check valve cores of the two check valves are arranged in a reverse mode. The above arrangement realizes the function that the inlet one-way valve and the outlet one-way valve can only discharge liquid in one way.
Preferably, one end of the piston pump shell, which is close to the connecting driving part, is provided with a stop wheel cover, the outer wall of the one-way valve is coated with a piston pump cover, and the piston pump cover is connected with the piston pump shell through screws. And arranging the stop wheel cover and the piston pump cover to form a complete piston pump.
Compared with the prior art, the utility model has the following beneficial effects:
the outer wall of the piston compression part is provided with the lubricating groove, and the lubricating groove and the inner wall of the piston cavity form the oil storage bin, so that lubricating oil can continuously seep out during the reciprocating motion process of the piston rod, and the piston cavity and the piston sealing ring are continuously lubricated, the reciprocating motion of the piston pump is ensured to be smooth, the abrasion is reduced, and the service life of the piston pump is prolonged; through set up the strengthening rib in the lubrication groove, guarantee the motion intensity of piston rod on the one hand, on the other hand can make lubricating oil evenly distributed in the oil storage storehouse to make piston cavity inner wall more even with the lubrication of piston seal circle, guarantee simultaneously before lubricating oil has used up that piston cavity inner wall homoenergetic is lubricated simultaneously.
Drawings
FIG. 1 is a perspective view of the present invention;
figure 2 is a front view of the present invention,
FIG. 3 is a cross-sectional view of the utility model A-A;
FIG. 4 is a front cross-sectional view of the present invention;
FIG. 5 is a schematic view of the piston rod of the present invention;
FIG. 6 is an exploded view of the present invention;
the labels in the figure are: 1-a piston pump shell, 11-a piston cavity, 2-a piston rod, 21-a connecting driving part, 22-a piston compression part, 23-a sealing groove, 24-a lubricating groove, 25-a reinforcing rib, 26-a driving connecting hole, 3-an oil storage bin, 4-a piston sealing ring, 5-a one-way valve, 51-a supporting frame, 52-an umbrella-shaped one-way valve core, 53-an O-shaped ring, 6-a cam, 7-a stop wheel cover, 8-a piston pump cover and 9-a motor component.
Detailed Description
The utility model will be further described with reference to examples of embodiments shown in the drawings to which:
in this embodiment, referring to fig. 1 to 6, a piston pump capable of lubricating includes a motor assembly 9, a piston pump housing 1, a piston rod 2 and a check valve 5, the piston housing is hollow to form a piston cavity 11, the piston cavity 11 is columnar, the piston rod 2 is installed in the piston cavity 11, the piston rod 2 includes a connection driving portion 21 connected to the motor assembly 9 and a piston compression portion 22 for driving the check valve 5, the piston compression portion 22 is columnar, the connection driving portion 21 is plate-shaped, and a cylindrical hole is formed in a middle portion of one end of the piston compression portion 22 away from the connection driving portion 21; the outer wall of the piston compression part 22 is provided with two sealing grooves 23 along the circumferential direction, a piston sealing ring 4 is sleeved in each sealing groove 23, the outer wall of each piston sealing ring 4 is tightly attached to the inner wall of the piston cavity 11, each piston sealing ring 4 is a Y-shaped sealing ring, each Y-shaped sealing ring comprises a lip part and a back part, and the back parts of the two Y-shaped sealing rings are arranged adjacently; the outer wall of the piston compression part 22 is provided with a lubricating groove 24 along the circumferential direction, the lubricating groove 24 and the inner wall of the piston cavity 11 form a closed oil storage bin 3, lubricating oil is filled in the oil storage bin 3, and a plurality of reinforcing ribs 25 are further arranged in the lubricating groove 24.
The connecting and driving part 21 is provided with a driving connecting hole 26, the motor assembly 9 is connected with a cam 6, and the cam 6 is inserted into the driving connecting hole 26; the check valve 5 is positioned at one end of the piston pump shell 1 close to the piston compression part 22, and comprises a check valve 5 for liquid inlet and a check valve 5 for liquid discharge which are arranged in parallel, and the two check valves 5 are positioned on the cavity wall of the piston cavity 11; the check valve 5 comprises a support frame 51, an umbrella-shaped check valve core 52 is connected to the middle part of the support frame 51 in a sliding manner, an O-shaped ring 53 is embedded in the outer wall of the support frame 51 along the circumferential direction, and the umbrella-shaped check valve core 52 of the check valve 5 for liquid inlet and the umbrella-shaped check valve core 52 of the check valve 5 for liquid discharge are reversely arranged; piston pump shell 1 is close to and connects drive division 21 one end and is equipped with only wheel lid 7, and only wheel lid 7 seals the piston cavity 11 and is close to the one end of connecting drive division 21, and the cladding of 5 outer walls of check valve has piston pump cover 8, and piston pump cover 8 passes through bolted connection with piston pump shell 1.
The working process of the utility model is as follows: when the motor assembly 9 is started, the motor drives the cam 6 to operate, the cam 6 acts on the driving connecting hole 26 connected with the driving part 21 and drives the piston rod 2 to do reciprocating linear motion, the piston rod 2 drives the lubricating grooves 24 to move together in the linear motion process, and when the piston rod moves in a first one-way mode, lubricating oil in the lubricating grooves 24 seeps out and is firstly adhered to the inner wall of the piston cavity 11, so that the lubrication of the piston cavity 11 is realized; along with the return movement of the piston rod 2, the lubricating oil adhered to the inner wall of the piston cavity 11 is transferred to the piston sealing ring 4, so that the lubrication of the piston sealing ring 4 is realized, and therefore, the lubricating oil continuously seeps out in the reciprocating motion process of the piston rod 2, and the piston cavity 11 and the piston sealing ring 4 are continuously lubricated, the smooth reciprocating operation of the piston pump is ensured, the abrasion is reduced, and the service life of the piston pump is prolonged; when the piston rod 2 is pulled, the outlet one-way valve 552 is closed, the inlet one-way valve 551 is opened, so that a liquid pumping function is realized, and when the piston rod 2 is compressed, the inlet one-way valve 551 is closed, the outlet one-way valve 552 is opened, so that a liquid conveying function is realized.
It is to be understood that in the claims, the specification of the present invention, all "including … …" are to be interpreted in an open-ended sense, i.e., in a sense equivalent to "including at least … …", and not in a closed sense, i.e., in a sense not to be interpreted as "including only … …". The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art should cover the changes, modifications, additions and substitutions within the spirit of the present invention.
Claims (7)
1. The piston pump capable of being lubricated is characterized by comprising a motor assembly (9), a piston pump shell (1), a piston rod (2) and a one-way valve (5), wherein the piston pump shell is internally and hollow and is used for forming a piston cavity (11), the piston rod (2) is installed in the piston cavity (11), the piston rod (2) comprises a connecting driving part (21) connected with the motor assembly (9) and a piston compression part (22) used for driving the one-way valve (5), the piston compression part (22) is columnar, two sealing grooves (23) are formed in the outer wall of the piston compression part (22) along the circumferential direction of the piston compression part, piston sealing rings (4) are sleeved in the sealing grooves (23), and the outer walls of the piston sealing rings (4) are tightly attached to the inner wall of the piston cavity (11); the outer wall of the piston compression part (22) is also provided with a lubricating groove (24) along the circumferential direction, a closed oil storage bin (3) is formed by the lubricating groove (24) and the inner wall of the piston cavity (11), and lubricating oil is filled in the oil storage bin (3).
2. A lubricatable piston pump according to claim 1, characterised in that the lubrication grooves (24) are provided with ribs (25) inside.
3. A lubricatable piston pump according to claim 1 or 2, characterised in that the piston ring (4) is a Y-ring comprising a lip portion and a back portion, the back portions of the two Y-rings being arranged adjacent to each other.
4. A lubricatable piston pump according to claim 1, wherein the connecting and driving portion (21) is provided with a driving connection hole (26), the motor assembly (9) is connected with the cam (6), and the cam (6) is inserted into the driving connection hole (26).
5. A lubricatable piston pump according to claim 1, characterised in that the non return valve (5) is located at the piston pump housing (1) near the piston compression (22) and comprises a non return valve (5) for inlet and a non return valve (5) for discharge arranged side by side and both non return valves (5) are located at the wall of the piston chamber (11).
6. The lubricatable piston pump according to claim 5, wherein the check valve (5) comprises a support frame (51), an umbrella-shaped check valve core (52) is slidably connected to the middle of the support frame (51), an O-shaped ring (53) is embedded in the outer wall of the support frame (51) along the circumferential direction of the support frame, and the umbrella-shaped check valve cores (52) of the two check valves (5) are arranged in opposite directions.
7. A lubricated piston pump according to claim 1, wherein, the piston pump shell (1) is provided with a scotch block (7) near one end connected with the driving part (21), the outer wall of the one-way valve (5) is coated with a piston pump cover (8), and the piston pump cover (8) is connected with the piston pump shell (1) through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122214803.5U CN216077465U (en) | 2021-09-13 | 2021-09-13 | Piston pump capable of lubricating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122214803.5U CN216077465U (en) | 2021-09-13 | 2021-09-13 | Piston pump capable of lubricating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216077465U true CN216077465U (en) | 2022-03-18 |
Family
ID=80676226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122214803.5U Active CN216077465U (en) | 2021-09-13 | 2021-09-13 | Piston pump capable of lubricating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216077465U (en) |
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2021
- 2021-09-13 CN CN202122214803.5U patent/CN216077465U/en active Active
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