CN219867357U - Suction-assisted control valve and lubricating pump with same - Google Patents
Suction-assisted control valve and lubricating pump with same Download PDFInfo
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- CN219867357U CN219867357U CN202320860225.9U CN202320860225U CN219867357U CN 219867357 U CN219867357 U CN 219867357U CN 202320860225 U CN202320860225 U CN 202320860225U CN 219867357 U CN219867357 U CN 219867357U
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- Prior art keywords
- valve
- oil
- piston
- oil tank
- suction
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- 230000001050 lubricating effect Effects 0.000 title abstract description 6
- 238000007789 sealing Methods 0.000 claims description 16
- 238000005461 lubrication Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 239000004519 grease Substances 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The suction-assisting type control valve is characterized by comprising a piston, a valve seat, a valve core and a resetting piece, wherein the valve seat is axially hollow to form a valve cavity and is arranged in a mounting cavity of the piston, and the lower end of the valve seat forms a valve port; the valve core can be axially and hermetically arranged in the valve cavity of the valve seat, the bottom of the valve core is provided with a plug capable of opening and closing the valve port of the valve seat, the valve core is axially provided with an oil through groove, a transverse oil inlet hole is formed near the plug in the oil through groove, and an oil outlet hole is formed near the upper end of the valve core. The utility model also discloses a lubricating pump. The auxiliary suction control valve is matched with the oil drain hole to play a role in protecting the oil tank; when oil is pumped, the piston can be quickly reset, and a good sucking assisting effect can be achieved.
Description
Technical Field
The utility model relates to a valve assembly, in particular to a valve assembly applied to a lubricating pump oil tank, and also relates to a lubricating pump.
Background
In the existing lubrication technology, a centralized lubrication system mostly consists of a lubrication pump, a pipeline and a distributor. In operation, as the lubricant pump is operated at regular intervals to supply oil to the pipeline and the distributor, the grease capacity in the oil tank of the lubricant pump is gradually reduced, and when the grease is about to run out, the grease needs to be added into the oil tank through the oiling machine.
At present, a common lubricating pump basically comprises a pump body, an oil tank, a piston and a pressure spring, wherein the oil tank is reversely arranged on the pump body, and the top of the oil tank is provided with an oil drain hole; the piston is arranged in the oil tank to play a role in assisting suction, the outer wall of the piston is in contact with the inner wall of the oil tank and can move up and down relative to the inner wall of the oil tank, the pressure spring is arranged in the oil tank, the upper end face of the pressure spring is propped against the inner wall of the oil tank, and the lower end face of the pressure spring is propped against the upper end face of the piston. The oil tank is characterized in that a safety oil drain hole is formed in the upper end of the oil tank, close to the top, and is used for overflowing after oil is filled up, and meanwhile, the oil tank is also used for balancing internal and external air pressure. The safety oil drain hole is located at the lower position of the piston when the piston is located at the top. When the oil is added, the piston moves upwards to exceed the safety oil drain hole, so that the oil overflows to protect the oil tank from damage caused by excessive oil filling. However, when pumping oil, the safety oil drain hole is closed manually, the piston can be reset, and then the sucking assisting effect can be achieved, so that the safety oil drain hole is simple in arrangement, but has the defects and needs to be improved.
Disclosure of Invention
The first technical problem to be solved by the present utility model is to provide a suction-assisted control valve with a piston capable of automatically resetting.
A second technical problem to be solved by the present utility model is to provide a lubrication pump with an automatically resettable piston, aiming at the above state of the art.
The technical scheme adopted by the utility model for solving the first technical problem is as follows: a suction-assisting control valve is characterized by comprising
A piston axially hollow to form a mounting cavity;
the valve seat is axially hollow to form a valve cavity and is arranged in the mounting cavity of the piston, and the lower end of the valve seat forms a valve port;
the valve core is axially provided with an oil through groove, a transverse oil inlet hole is formed near the plug, and an oil outlet hole is formed near the upper end of the valve core; and
the reset piece always forces the valve core to move upwards so as to enable the valve core to close the valve port of the valve seat.
The reset element is preferably of the following structure: the valve core upwards extends out of the valve cavity and the upper end of the valve core is provided with a clamp spring, the reset piece is a reset spring, the reset spring is sleeved on the outer side of the upper end of the valve core and the upper end of the reset spring abuts against the clamp spring, and the lower end of the reset spring abuts against the step part in the valve seat.
Further, the valve port of the valve seat is flaring, correspondingly, a sealing ring is arranged on the periphery of the plug, and the sealing ring can be in sealing fit with the valve port of the valve seat.
In order to facilitate the installation, the valve seat comprises a wide section and a narrow section positioned at the upper end of the wide section, the narrow section is assembled in the installation cavity of the piston from bottom to top, the wide section is protruded on the lower end face of the valve seat, and the valve port is formed on the wide section.
Further, the piston includes a main body portion and a sleeve portion extending axially upward from an outer periphery of the main body portion.
Further, the outer circumference of the sleeve portion has an annular groove. A sealing rubber ring can be arranged in the annular groove.
The utility model solves the second technical problem by adopting the technical proposal that: a lubrication pump, characterized by comprising
A pump body;
the oil tank is inversely arranged on the pump body, and the top of the oil tank is provided with an oil drain hole;
the auxiliary suction control valve is arranged in the oil tank, the outer wall of the piston is contacted with the inner wall of the oil tank, the top of the valve core can prop against the inner wall of the top of the oil tank so as to drive the valve core to move downwards, and thus, the valve port is opened; and
the pressure spring is arranged in the oil tank, the upper end face of the pressure spring abuts against the inner wall of the oil tank, and the lower end face of the pressure spring abuts against the upper end face of the piston.
Preferably, the oil drain hole is formed in the top edge of the oil tank, an end cover is sleeved on the outer side of the top of the oil tank, the end cover is provided with a surrounding wall portion extending in the circumferential direction, and an oil drain groove corresponding to the oil drain hole is formed in the inner side of the surrounding wall portion.
Further, the top of the oil tank is provided with a through hole, and a bracket which can be abutted against the top of the valve core is arranged in the through hole.
Compared with the prior art, the utility model has the advantages that: after the oil is added to a certain degree, the top of the valve core is stressed, the valve port of the valve seat is opened, redundant grease can enter from the valve port, enter into the upper cavity of the piston along the oil through groove and are discharged from the oil drain hole, and the oil tank is protected; when oil is pumped, the oil has a sealing effect, so that the air can be blocked, the upper cavity and the lower cavity of the piston are always in a sealing state, the piston can automatically reset, and still a good sucking assisting effect can be achieved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is an enlarged cross-sectional view of the suction-assisted control valve of fig. 2.
Fig. 4 is an enlarged view of the valve cartridge of fig. 3.
Fig. 5 is an enlarged view of the valve seat of fig. 3.
Fig. 6 is an enlarged view of another view of the end cap of fig. 2.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 and 2, the lubrication pump in this embodiment includes a pump body 6, an oil tank 7, a suction-assisting control valve 10, a pressure spring 8 and an end cover 9, the pump body 6 can generate power, the oil tank 7 is reversely arranged on the top of the pump body 6 and has an oil drain hole 71, and grease for lubrication can be contained in the oil tank 7; the suction-assisting control valve 8 is arranged in the oil tank 7, the pressure spring 8 is arranged in the oil tank 7, the upper end face of the pressure spring abuts against the inner wall of the oil tank 7, and the lower end face of the pressure spring abuts against the upper end face of the piston 1.
As shown in fig. 6, the oil drain hole 71 is formed in the top of the oil tank 7, and an end cap 9 is provided on the outer side of the top of the oil tank 7, the end cap 9 has a peripheral wall portion 91 extending in the axial direction of the outer periphery, and an oil drain groove 92 corresponding to the oil drain hole 71 is formed inside the peripheral wall portion 91. The top of the oil tank 7 is provided with a through hole 72, and a bracket 73 which can be abutted against the top of the valve core 3 is arranged in the through hole 72.
As shown in fig. 3, 4 and 5, the suction-assisted control valve in this embodiment includes a piston 1, a valve seat 2, a valve core 3 and a reset element 4, where the piston 1 is hollow in the axial direction to form a mounting cavity; the outer wall of the piston 1 is in contact with the inner wall of the oil tank 7.
The valve seat 2 is hollow in the axial direction to form a valve cavity and is arranged in the mounting cavity of the piston 1, and the lower end of the valve seat 2 forms a valve port 24.
The valve core 3 is arranged in the valve cavity of the valve seat 2 in an axially sealing and movable way, and the bottom is provided with a plug 31 capable of opening and closing the valve port 24, the valve core 3 is axially provided with an oil through groove 32, a transverse oil inlet hole 33 is formed near the plug 31 in the oil through groove 32, and an oil outlet hole 34 is formed near the upper end of the valve core 3.
The return element 4 always forces the valve element 3 upwards so that the valve element 3 closes the valve opening 24 of the valve seat 2. The valve core 3 extends upwards out of the valve cavity and is provided with a clamp spring 41 at the upper end, the reset piece 4 in the embodiment is a reset spring, the reset spring is sleeved outside the upper end of the valve core 3 and abuts against the clamp spring 41 at the upper end, and the lower end abuts against the step part 23 in the valve seat 2.
The valve port 24 of the valve seat 2 is in a flaring shape, correspondingly, the periphery of the plug 31 is provided with a sealing ring 5, and the sealing ring 5 can be in sealing fit with the valve port 24 of the valve seat 2.
The valve seat 2 in this embodiment includes a wide section 22 and a narrow section 21 located at the upper end of the wide section 22, the narrow section 21 is assembled in the installation cavity of the piston 1 from bottom to top through screw-thread fit, the wide section 22 protrudes from the lower end face of the valve seat 2, and the valve port 24 is formed on the wide section 22. The piston 1 includes a main body 11 and a sleeve 12 extending axially upward from the outer periphery of the main body 11. The outer circumference of the sleeve portion 12 has an annular groove, and a sealing rubber ring can be sleeved on the annular groove.
When the oil is filled, the piston gradually rises along with the oil liquid level, after the oil is filled to a certain extent, the top of the valve core is stressed by the support, the valve core moves downwards relative to the piston, the valve port of the valve seat is opened, and redundant oil can enter from the valve port, enter into the upper cavity of the piston along the oil through groove and are discharged from the oil drain hole, so that the oil tank is protected; meanwhile, when oil is pumped, the oil also has a sealing effect, so that the upper cavity and the lower cavity of the piston are always in a sealing state, the oil drain hole is not required to be pressed by fingers, the piston can automatically reset, the piston still has a good sucking assisting effect, and therefore, the normal sucking assisting function is not influenced by oiling at any time.
Claims (9)
1. A suction-assisting control valve is characterized by comprising
A piston (1) axially hollow to form a mounting cavity;
a valve seat (2) axially hollow to form a valve cavity and arranged in the installation cavity of the piston (1), wherein the lower end of the valve seat (2) forms a valve port (24);
the valve core (3) can be axially and hermetically arranged in the valve cavity of the valve seat (2), the bottom of the valve core is provided with a plug (31) capable of opening and closing the valve port (24), the valve core (3) is axially provided with an oil through groove (32), a transverse oil inlet hole (33) is formed near the plug (31) in the oil through groove (32), and an oil outlet hole (34) is formed near the upper end of the valve core (3); and
and the reset piece (4) always forces the valve core (3) to move upwards so as to enable the valve core (3) to close the valve port (24) of the valve seat (2).
2. The suction-assisted control valve according to claim 1, characterized in that the valve core (3) extends upwards out of the valve cavity and is provided with a clamp spring (41) at the upper end, the reset piece (4) is a reset spring, the reset spring is sleeved outside the upper end of the valve core (3) and is abutted against the clamp spring (41) at the upper end, and the lower end is abutted against the step part (23) in the valve seat (2).
3. The suction-assisted control valve according to claim 1, characterized in that the valve port (24) of the valve seat (2) is flared, and correspondingly, a sealing ring (5) is arranged on the periphery of the plug (31), and the sealing ring (5) can be in sealing fit with the valve port (24) of the valve seat (2).
4. A suction-assisted control valve according to claim 1, characterized in that the valve seat (2) comprises a wide section (22) and a narrow section (21) at the upper end of the wide section (22), the narrow section (21) is assembled in the mounting cavity of the piston (1) from bottom to top, the wide section (22) protrudes from the lower end face of the valve seat (2), and the valve port (24) is formed on the wide section (22).
5. A suction-assisted control valve according to claim 1, characterized in that the piston (1) comprises a main body part (11) and a sleeve part (12) extending axially upwards from the outer periphery of the main body part (11).
6. A suction-assisted control valve according to claim 1, characterized in that the outer circumference of the sleeve part (12) has an annular groove.
7. A lubrication pump having a suction-assisted control valve according to any one of claims 1 to 6, comprising
A pump body (6);
an oil tank (7) which is arranged on the pump body (6) in an inverted manner and is provided with an oil drain hole (71) at the top;
the auxiliary suction control valve (10) is arranged in the oil tank (7), the outer wall of the piston (1) is in contact with the inner wall of the oil tank (7), the top of the valve core (3) can prop against the inner wall of the top of the oil tank (7) so as to drive the valve core (3) to move downwards, and thus the valve port (24) is opened; and
and the pressure spring (8) is arranged in the oil tank (7) and the upper end surface of the pressure spring is propped against the inner wall of the oil tank (7), and the lower end surface of the pressure spring is propped against the upper end surface of the piston (1).
8. The lubrication pump according to claim 7, wherein the oil drain hole (71) is formed in a top edge of the oil tank (7), an end cover (9) is sleeved on an outer side of the top of the oil tank (7), the end cover (9) is provided with a surrounding wall portion (91) extending in an outer circumferential axial direction, and an oil drain groove (92) corresponding to the oil drain hole (71) is formed in an inner side of the surrounding wall portion (91).
9. The lubrication pump according to claim 8, characterized in that the top of the oil tank (7) is provided with a through hole (72), and a bracket (73) which can be abutted against the top of the valve core (3) is arranged in the through hole (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320860225.9U CN219867357U (en) | 2023-04-17 | 2023-04-17 | Suction-assisted control valve and lubricating pump with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320860225.9U CN219867357U (en) | 2023-04-17 | 2023-04-17 | Suction-assisted control valve and lubricating pump with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219867357U true CN219867357U (en) | 2023-10-20 |
Family
ID=88325395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320860225.9U Active CN219867357U (en) | 2023-04-17 | 2023-04-17 | Suction-assisted control valve and lubricating pump with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219867357U (en) |
-
2023
- 2023-04-17 CN CN202320860225.9U patent/CN219867357U/en active Active
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