CN109854930B - Quantitative oil-gas lubrication pump - Google Patents
Quantitative oil-gas lubrication pump Download PDFInfo
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- CN109854930B CN109854930B CN201910021223.9A CN201910021223A CN109854930B CN 109854930 B CN109854930 B CN 109854930B CN 201910021223 A CN201910021223 A CN 201910021223A CN 109854930 B CN109854930 B CN 109854930B
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- 238000005461 lubrication Methods 0.000 title claims abstract description 47
- 239000003921 oil Substances 0.000 claims abstract description 387
- 239000010687 lubricating oil Substances 0.000 claims abstract description 83
- 238000007789 sealing Methods 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 238000005086 pumping Methods 0.000 claims abstract description 25
- 230000000903 blocking effect Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 25
- 230000008569 process Effects 0.000 description 22
- 230000001050 lubricating effect Effects 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000009347 mechanical transmission Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The application discloses ration oil gas lubrication pump has solved lubricating oil and has received the low temperature influence, causes pneumatic lubrication pump suction or the dead problem of card. The quantitative oil-gas lubrication pump comprises a pump body with an oil inlet cavity, an oil pumping mechanism and a non-return mechanism, wherein the oil pumping mechanism and the non-return mechanism are arranged in the pump body, the oil pumping mechanism comprises a piston which slides in the pump body in a sealing manner, a plunger rod arranged on the piston and an oil conveying sleeve for conveying lubricating oil to an external mechanism, the oil conveying sleeve is arranged in the pump body in a sealing manner and forms the oil inlet cavity with the piston, one end of the plunger rod is arranged on the piston, the other end of the plunger rod is arranged in the oil conveying channel in a penetrating manner in a sealing manner, and the non-return mechanism is arranged on an oil outlet end of the oil conveying sleeve and has a unidirectional non-return effect and is used for preventing lubricating oil in the oil outlet channel from returning to the oil inlet cavity. The pump can be normally used under the low-temperature high-cold condition, and the performance reliability of the pump body is improved, so that the purpose of reducing the failure rate is achieved.
Description
Technical Field
The invention relates to lubricating equipment, in particular to a quantitative oil-gas lubricating pump.
Background
The quantitative oil-gas lubrication pump uses compressed gas and utilizes an electromagnetic valve to drive a piston to reciprocate in a cylinder body, and simultaneously drives a pressure oil plunger which is connected with a pneumatic piston and has a certain effective area difference to synchronously reciprocate, and outputs a fixed dose of lubricating oil or lubricating grease to a pump body through the movement of an oil cylinder piston, so that the lubricating oil or lubricating grease forms a continuous fine moving oil film under the drive of the compressed gas, thereby realizing the equipment for lubricating mechanical parts.
As shown in fig. 1 and 2, the conventional pneumatic lubrication pump includes a pump body 101 with a pump oil cavity 201 formed therein, and a piston 202 sliding in the pump body in a sealing manner, wherein an oil passage and an oil suction hole 102 communicating with the oil passage are formed in the pump body, an oil inlet 203 communicating the oil passage with the pump oil cavity in the pump body is formed between the oil passage and the pump oil cavity in the pump body, a duplex check valve 103 is further mounted in the oil passage, one end of the duplex check valve is an oil inlet 204, the other end is an oil outlet 205 with a conduction direction opposite to that of the oil inlet, the oil suction hole in the pump body is communicated with the oil inlet of the duplex check valve, and an inner cavity of the duplex check valve is communicated with the oil inlet in the pump body.
When the pneumatic lubrication pump works, an external air source drives the oil cylinder piston 202 to reciprocate, the volume of the oil pumping cavity is changed in the reciprocating process of the oil cylinder piston, when the volume of the oil pumping cavity is increased by the piston, negative pressure is formed at the oil suction hole and the oil outlet end of the duplex check valve, on one hand, lubricating oil is sucked into the oil pumping cavity, and on the other hand, a steel ball at the oil outlet end of the duplex check valve is sucked, so that the steel ball seals the oil outlet end, and the phenomenon of lubricating oil backflow in the oil suction process is avoided; when the volume of the oil cavity of the piston descending pump is reduced, lubricating oil bursts into the duplex check valve from the oil cavity of the pump under the pushing of the piston, at the moment, oil pressure can push a steel ball at the oil inlet end of the duplex check valve to prop against a channel at the oil inlet end, so that the lubricating oil is prevented from reversing back to the oil storage barrel, and on the other hand, the oil pressure can push the steel ball at the oil outlet end of the duplex check valve open, so that the lubricating oil can enter the oil duct, and the lubricating oil is conveyed to a mechanical transmission part needing lubrication.
However, when the pneumatic lubrication pump is used in a severe cold region, because the lubricating oil is affected by low temperature, the fluidity of the lubricating oil is poor, the viscosity and the resistance are increased, and the double check valve is easy to block, so that the pneumatic lubrication pump is air-out or blocked, the performance of the pneumatic lubrication pump is easy to be affected by environmental conditions, thereby causing high failure occurrence, having larger limitation on the viscosity range and the temperature adaptability of the lubricating oil, and being unfavorable for coping with the environmental conditions of large-temperature difference use.
Disclosure of Invention
In view of this, in order to solve the problem that lubricating oil is affected by low temperature, causing the air suction or the seizure of the oil-gas lubrication pump, the embodiment of the application provides a quantitative oil-gas lubrication pump.
The embodiment of the application provides a quantitative oil-gas lubrication pump, which comprises a pump body with an oil inlet cavity, an oil pumping mechanism and a non-return mechanism, wherein the oil pumping mechanism and the non-return mechanism are arranged in the pump body, and an oil suction hole communicated with the oil inlet cavity is formed in the side wall of the pump body; the oil pumping mechanism comprises a pneumatic piston which is hermetically slid in the pump body, a metering plunger rod which is arranged on the piston and an oil conveying sleeve which is used for conveying lubricating oil to an external mechanism; the oil conveying sleeve is arranged in the pump body in a sealing manner and forms the oil inlet cavity with the piston, an oil conveying passage is formed in the oil conveying sleeve, an oil inlet hole for communicating the oil conveying passage with the oil inlet cavity is formed in the side wall of the oil conveying sleeve, and an oil outlet passage communicated with the oil conveying passage is formed in the pump body; one end of the metering plunger rod is arranged on the piston, and the other end of the metering plunger rod is hermetically penetrated in the oil conveying channel; the non-return mechanism is arranged on the oil outlet end of the oil conveying sleeve and has a one-way non-return function and is used for preventing lubricating oil in the oil outlet channel from reversing back to the oil inlet cavity.
Further, the quantitative oil-gas lubrication pump also comprises a blocking component which is arranged on the pump body and used for preventing the piston from falling off, wherein the blocking component comprises a cover plate which is embedded in the inner cavity of the pump body in a sealing way and is respectively positioned at two sides of the piston with the oil conveying sleeve, a caulking groove which is arranged on the side wall of the inner cavity of the pump body and is positioned at one side of the cover plate far away from the piston, and a retainer ring for hole which is embedded in the caulking groove and used for preventing the cover plate from falling off from the pump body; the side wall of the cover plate is provided with a sealing groove, and a sealing ring is embedded in the sealing groove and is used for sealing between the cover plate and the pump body; the cover plate is provided with an adjusting threaded hole, an adjusting bolt is connected in the adjusting threaded hole in a threaded mode, an air cavity used for enabling compressed air to enter and then push the piston to move is formed between the cover plate and the piston, and the adjusting bolt is used for adjusting the distance between the piston and the cover plate.
Further, the piston comprises a sealing ring which is tightly slid in the oil inlet cavity, a spring seat which is fixed on the sealing ring, a reset piece which is arranged between the spring seat and the oil conveying sleeve and is used for driving the spring seat to move towards the cover plate, the plunger rod is detachably arranged on the spring seat, the spring seat is provided with a mounting hole for inserting the metering plunger rod and a pin hole which is perpendicular to the length direction of the metering plunger rod and is communicated with the mounting hole, and the metering plunger rod is fixed on the spring seat through a pin shaft after being inserted into the mounting hole; one end of the resetting piece is sleeved on the spring seat, and the other end of the resetting piece is sleeved on the oil conveying sleeve.
Further, an air inlet channel communicated with the air cavity is formed in the pump body, and an air discharge channel which is used for communicating the air inlet channel with the oil outlet channel is formed in the pump body and located at an air inlet of the air inlet channel.
Further, the cover plate is provided with a plurality of auxiliary mounting positioning holes distributed around the adjusting threaded holes.
Further, the non-return mechanism comprises a mounting cavity, a valve sleeve and an oil discharge one-way valve, wherein the mounting cavity is arranged on the pump body and is simultaneously communicated with the oil discharge duct, the oil delivery duct and the air discharge duct, and the mounting cavity is positioned between the air discharge duct and the oil discharge duct; the valve sleeve is fixed in the mounting cavity in a sealing way, one end of the valve sleeve, which is positioned in the mounting cavity, is in sealing sleeve joint with the oil outlet end of the oil conveying sleeve, and a gap for air in the air discharge channel to pass through and then enter the oil outlet channel is reserved between the middle part of the valve sleeve and the inner wall of the mounting cavity; the oil discharge one-way valve is arranged in the inner cavity of the valve sleeve and used for blocking a passage between the inner cavity of the valve sleeve and the oil delivery channel; and the side wall of the valve sleeve is provided with an oil outlet for communicating the installation cavity with the inner cavity of the valve sleeve.
Further, the oil discharge check valve comprises a check valve screw sleeve which is connected in the valve sleeve inner cavity in a threaded manner and is close to one end of the oil conveying sleeve, a movable groove formed at the bottom of the valve sleeve inner cavity and a check valve core embedded in the movable groove are formed on the check valve screw sleeve, a conical hole which is coaxial with the movable groove and is used for communicating the valve sleeve inner cavity with the oil conveying channel is formed on the check valve screw sleeve, a pressure discharge channel which is used for communicating the valve sleeve inner cavity with the movable groove is formed in one end of the check valve core, which is close to one end of the check valve screw sleeve, and a conical plug which is used for being embedded in the conical hole is integrally formed on one end of the check valve core, which is close to the inner wall of the conical hole under the driving of the driving piece.
Further, the driving piece is sleeved on the one-way valve core, one end of the driving piece is abutted against the bottom of the inner cavity of the valve sleeve, and the other end of the driving piece is abutted against the conical plug.
Preferably, the reset element and the driving element are springs.
Further, the pump body comprises a shell and an oil path block, the air inlet channel and the oil pumping mechanism are arranged in the shell, the non-return mechanism, the air inlet of the air inlet channel and the oil outlet channel are all positioned on the oil path block, and the oil path block is fixed at one end of the shell in a sealing way.
The above-mentioned at least one technical scheme that this application embodiment adopted can reach following beneficial effect:
1. the oil pumping mechanism similar to the needle cylinder injection principle can reduce the influence of environmental conditions on the oil pumping mechanism, and the oil suction resistance is furthest reduced by the oil suction holes formed in the side surface of the oil inlet cavity, so that the pneumatic lubrication pump can be normally used under the low-temperature high-cold condition, the performance reliability of the pump body is improved, and the purpose of reducing the failure rate is achieved;
2. the exhaust system for discharging air through the air discharge channel via the oil discharge channel after reversing can rapidly discharge the pressure applied to the piston to enable the piston to reset rapidly, promote lubricating oil to enter the oil inlet cavity smoothly, and promote the discharge of the lubricating oil in the oil inlet and outlet channels to reduce the condition that the pump body is blocked, so that the aim of further reducing the failure rate of the pump body is achieved;
3. the non-return mechanism can limit the lubricating oil in the oil outlet channel from reversing into the oil outlet channel, so that the plunger rod can suck the lubricating oil in the oil inlet cavity into the oil outlet channel in the process of being separated from the oil outlet channel, the oil outlet sleeve is not easy to suck empty, and the probability of the pump body failure is further reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
In the drawings:
FIG. 1 is an overall block diagram of a conventional pneumatic lubrication pump;
FIG. 2 is a cross-sectional view of a prior art pneumatic lubrication pump;
FIG. 3 is an overall block diagram of a quantitative oil-gas lubrication pump of the present application;
FIG. 4 is a cross-sectional view of a quantitative oil and gas lubrication pump of the present application;
FIG. 5 is a schematic cross-sectional view of a cover plate in a quantitative oil-gas lubrication pump according to the present application;
FIG. 6 is a schematic cross-sectional view of a stopping mechanism of a quantitative oil-gas lubrication pump according to the present application.
Detailed Description
For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Fig. 1 is an overall structure diagram of an existing pneumatic lubrication pump, fig. 2 is a cross-sectional view of the existing pneumatic lubrication pump, and combines fig. 1 and 2, the existing pneumatic lubrication pump comprises a pump body 101 with a pump oil cavity 201 formed therein, a piston 202 sliding in the pump body in a sealing manner, an oil passage and an oil suction hole 102 communicated with the oil passage are formed in the pump body, a pump oil hole 203 for communicating the oil passage with the pump oil cavity in the pump body is formed between the oil passage and the pump oil cavity in the pump body, a duplex one-way valve 103 is further installed in the oil passage, one end of the duplex one-way valve is an oil inlet end 204, the other end is an oil outlet end 205 with a conduction direction opposite to the oil inlet end, the oil suction hole in the pump body is communicated with the oil inlet end of the duplex one-way valve, and an inner cavity of the duplex one-way valve is communicated with the pump oil hole in the pump body.
When the existing pneumatic lubrication pump works, an external air source pushes a piston to reciprocate, the volume of an oil pumping cavity is changed in the reciprocating process of the piston, when the volume of the oil pumping cavity is increased, negative pressure is formed at the oil suction hole and the oil outlet end of the duplex one-way valve, on one hand, lubricating oil is sucked into the oil pumping cavity, and on the other hand, a steel ball at the oil outlet end of the duplex one-way valve is sucked, so that the oil outlet end is blocked by the steel ball, and oil leakage in the oil suction process is avoided; when the volume of the oil pumping cavity is reduced, lubricating oil bursts into the duplex check valve from the oil pumping cavity under the pushing of the piston, at the moment, oil pressure can push a steel ball at the oil inlet end of the duplex check valve to prop against a channel at the oil inlet end, so that the lubricating oil is prevented from reversing back to the oil storage barrel, and on the other hand, the oil pressure can push the steel ball at the oil outlet end of the duplex check valve open, so that the lubricating oil can enter the oil duct, and the lubricating oil is conveyed to a mechanical transmission part needing lubrication.
However, when the conventional pneumatic lubrication pump is used in a severe cold region, the fluidity of the lubricating oil is poor and the viscosity is increased due to the influence of low temperature, so that the double check valve is easily blocked, the pneumatic lubrication pump is air-out or blocked, the performance of the pneumatic lubrication pump is easily influenced by environmental conditions, and the failure is high.
Fig. 3 is a whole structure diagram of the quantitative oil-gas lubrication pump of the present application, fig. 4 is a cross-sectional view of the quantitative oil-gas lubrication pump of the present application, combine fig. 3 and fig. 4, the quantitative oil-gas lubrication pump includes a pump body 31 with an oil inlet cavity 412, the pump body includes a housing 301 and an oil-way block 302, a cavity penetrating through both ends of the housing is formed in the center of the housing, a plurality of oil suction holes 303 communicated with the oil inlet cavity are formed in the side wall of the housing, the oil-way block is fixed at one end of the housing through bolts, and the mutually contacted parts between the oil-way block and the housing are provided with O-shaped sealing rings 403 for strengthening the tightness of the two, a linear air hole 404 parallel to the length direction of the housing is formed in the end face of the side face of the housing, which is away from one end of the oil-way block, of the housing, is provided with an air inlet 406 communicating the linear air hole with the inner cavity of the housing, a folded through hole 405 is formed in the inner wall of the oil-way block, an opening of the folded through hole one end is located on the side wall of the oil-way block, and an opening of the other end is located on the end face of the side of the oil-way block, which is contacted with the housing, when the oil-way block is fixed with the housing, and the opening is mutually contacted with the air inlet channel is formed. An oil outlet channel 407 communicated with the inner cavity of the shell is further formed in one side of the side wall of the oil path block, which is opposite to the opening of the double-folded through hole, and an air outlet channel 408 which is communicated with the air inlet channel and is formed in the pump body and located at the air inlet of the air inlet channel is formed.
The quantitative oil-gas lubrication pump further comprises an oil pumping mechanism and a non-return mechanism 41 which are arranged in the pump body, the oil pumping mechanism comprises a pneumatic piston 43, a metering plunger rod 409 and an oil conveying sleeve 417, the pneumatic piston is arranged in the pump body in a sealing sliding mode, the metering plunger rod 409 is arranged on the pneumatic piston, the oil conveying sleeve is used for conveying lubricating oil to an external mechanism, the oil conveying sleeve is arranged in the pump body in a sealing mode and forms an oil inlet cavity 412 with the pneumatic piston, an oil conveying passage 418 is arranged on the oil conveying sleeve, an oil inlet hole 419 for enabling the oil conveying passage to be communicated with the oil inlet cavity is formed in the side wall of the oil conveying sleeve, an oil outlet passage communicated with the oil conveying passage is formed in the pump body, one end of the metering plunger rod is arranged on the pneumatic piston, the other end of the metering plunger rod is arranged in the oil conveying passage in a sealing mode, and the non-return mechanism is arranged on the oil outlet end of the oil conveying sleeve and has a one-way non-return function and is used for preventing lubricating oil in the oil outlet passage from reversely returning to the oil inlet cavity.
The pump body comprises a shell and an oil circuit block, the air inlet channel and the oil pumping mechanism are arranged in the shell, the non-return mechanism, the air inlet of the air inlet channel and the oil outlet channel are all positioned on the oil circuit block, and the oil circuit block is fixed at one end of the shell in a sealing way. The pump body is divided into the shell and the oil way block, so that the air inlet channel and the oil outlet channel can be distributed on the shell and the oil way block, and the air inlet channel and the oil outlet channel can be processed in a segmented manner when being processed, so that the number of bending sections on the same object is reduced, and the processing difficulty is reduced; in addition, the split type pump body can be convenient for the installation of oil pumping mechanism, also can clear up more thoroughly when overhauling and clearance to reach the purpose of facilitate the use.
Further, the piston comprises a sealing ring 411 which tightly slides in the oil inlet cavity, a spring seat 413 fixed on the sealing ring, a reset piece 415 arranged between the spring seat and the oil delivery sleeve and used for driving the spring seat to move towards the cover plate, the sealing ring slides in the shell in a sealing way, the oil inlet cavity is formed between the sealing ring and the oil path block, the spring seat is in a stepped shaft shape, one end of the spring seat is provided with an external thread, and the other end of the spring seat is penetrated in the center of the sealing ring in a sealing way and is fixed with the sealing ring through a nut.
The metering plunger rod is detachably mounted on the spring seat, the spring seat is provided with a mounting hole 410 for the insertion of the metering plunger rod and a pin hole 414 perpendicular to the length direction of the metering plunger rod and communicated with the mounting hole, and the metering plunger rod is fixed on the spring seat through a pin shaft 416 after being inserted into the mounting hole.
One end of the resetting element 415 is sleeved on the spring seat, the other end of the resetting element is sleeved on the oil conveying sleeve, preferably, the resetting element can be an elastic object such as a spring, and when the resetting element is sleeved on the spring seat, the plunger rod is positioned at the center of the resetting element. The return piece can be in a compressed state, any product which can drive the piston to move towards one side far away from the oil conveying sleeve can be used as the return piece, and the spring is selected only because the spring is easiest to acquire, so that the spring is easy to manufacture, is convenient to maintain and replace, and has low cost, thereby achieving the purpose of reducing maintenance difficulty.
The oil conveying sleeve is sealed and fixed at one end of keeping away from the cover plate in the shell, the part of oil conveying sleeve, which is contacted with the shell, is provided with an O-shaped sealing ring 429, at the moment, a cavity part between the oil conveying sleeve and the sealing ring is the maximum capacity of oil suction capacity of the oil suction cavity, one end of the reset piece, which is far away from the spring seat, is sleeved on the oil conveying sleeve, and at the moment, is in a compression state, so that the reset piece can push the spring seat to move towards one side, which is far away from the oil conveying sleeve, in the process of releasing elastic potential energy, the piston is reset, so that lubricating oil is sucked into the oil suction cavity, the oil delivery cavity is opened in the center of the oil conveying sleeve and penetrates through the oil delivery sleeve, the oil delivery cavity is communicated with the oil delivery cavity, and one end of the metering plunger rod, which is far away from the spring seat, is sealed and penetrates into the oil delivery cavity, and the oil suction cavity is opened on the side wall of the oil conveying sleeve, so that the metering plunger rod is communicated with the oil suction cavity is positioned between the oil inlet and the oil suction cavity, and the metering plunger rod is retracted in the oil delivery cavity.
Because the metering plunger rod of the piston is hermetically penetrated into the oil delivery channel on the oil delivery sleeve and has the unidirectional non-return function of the non-return mechanism, the piston can cause the volume of the oil inlet cavity and the volume of the oil delivery channel to become strong negative pressure in the process of moving towards one side far away from the oil delivery sleeve, on the one hand, the oil suction hole and the oil inlet hole are formed, on the other hand, external lubricating oil can be sucked into the oil inlet cavity through the oil suction hole, on the other hand, the lubricating oil in the oil inlet cavity can also be sucked into the oil delivery channel through the oil inlet hole, and then when the piston moves towards the oil delivery sleeve under the pushing of an external air source, part of lubricating oil in the oil inlet cavity flows out of the oil inlet cavity through the oil suction hole after being pressed, and the other part of the lubricating oil in the oil inlet cavity can be extruded, so as to push the lubricating oil in the oil inlet cavity to enter the oil delivery channel, and the oil delivery channel is completely filled. And the metering plunger rod can extrude lubricating oil in the oil delivery channel, under the condition, the lubricating oil in the oil delivery channel can move towards one side of the check mechanism, because the metering plunger rod and the piston have larger section accumulation difference, higher output pressure can be generated in the oil delivery channel, even if weather is cold, the fluidity of the lubricating oil is reduced, the lubricating oil in the oil delivery channel can also jack the check mechanism to enter the oil delivery channel under the action of the larger pressure, the check mechanism is not easy to generate blockage, the lubricating oil can be smoothly delivered to a mechanical transmission part through the oil delivery channel, and the piston can block the oil outlet end of the oil delivery sleeve under the action of negative pressure in the resetting process, so that the piston wants to reset, the negative pressure in the oil delivery channel is removed through the oil inlet hole, namely the lubricating oil in the oil inlet cavity is necessarily sucked into the oil delivery channel when the piston resets, the lubricating oil is injected into the oil delivery channel again, the pneumatic lubricating pump can reduce the influence of the environment condition on the pneumatic lubricating pump, meanwhile, the whole oil suction hole is not blocked by the part, the whole mechanism is not blocked by the check mechanism, and the pneumatic lubricating pump can be easily stopped in the process, and the air pump can be easily stopped by the pump body.
Further, since the size and the stroke of the metering plunger are fixed, the lubricating oil with equal mass is output in each pressing process, and the purpose of quantitative oil supply is realized. Preferably, a wider oil supply range is obtained by varying the diameter and stroke of the metering plunger.
Fig. 5 is a schematic diagram of a cross-sectional structure of a cover plate in the quantitative oil-gas lubrication pump according to the present application, in combination with fig. 4, the quantitative oil-gas lubrication pump further includes a blocking component 42 installed on the pump body for preventing the piston from falling off, the blocking component includes a cover plate 423 that is sealed to be embedded in an inner cavity of the pump body and is respectively located at two sides of the piston with the oil delivery sleeve, the cover plate is used for blocking the piston from falling off from the pump body and forming an air cavity 427 with a sealing ring on the piston, an embedded groove 421 that is opened on a side wall of the inner cavity of the pump body and is located at one side of the cover plate far away from the piston, and a hole retainer 422 that is embedded in the embedded groove for preventing the cover plate from falling off from the pump body, a sealing groove 424 is provided on a side wall of the cover plate, and an O-shaped sealing ring 425 is embedded in the sealing groove for sealing between the cover plate and the pump body.
The inner cavity of the shell is internally provided with a stepped platform 426 at one end far away from the oil path block, the cover plate is embedded in the shell in a sealing way and is abutted against the stepped platform, the stepped platform is used for positioning the cover plate, the cover plate is limited to deviate, an air groove 501 is formed on the end face, close to one side of the sealing ring, of the cover plate through milling, an air injection port communicated between the air inlet channel and the inner cavity of the shell is aligned with the air groove, and therefore an external air source can inject compressed air into the air cavity between the cover plate and the sealing ring to push the piston to move.
The cover plate is provided with an adjusting threaded hole 502, an adjusting bolt 428 is in threaded connection with the adjusting threaded hole, an air cavity for allowing compressed air to enter and then push the piston to move is formed between the cover plate and the piston, and the adjusting bolt is used for adjusting the distance between the piston and the cover plate, specifically: one end of the spring seat penetrating through the sealing ring is abutted against the adjusting bolt, and the adjusting bolt can adjust the distance between the sealing ring and the cover plate through screwing, so that the movement stroke of the piston is adjusted. When an external air source fills compressed air into the air cavity, the piston moves towards one side of the oil conveying sleeve under the pushing of the compressed air, so that the piston can extrude lubricating oil in the oil inlet cavity and the oil conveying passage, and the lubricating oil can be pumped into the oil outlet passage.
The cover plate is provided with a plurality of auxiliary mounting positioning holes 503 distributed around the adjusting threaded holes, the positioning holes are used for embedding tools such as clips or wrenches, so that operators can conveniently put the cover plate into the shell by means of the tools, in addition, certain structures on the cover plate can possibly block a channel between the air inlet channel and the air cavity in the mounting process, and therefore the positioning holes can conveniently rotate the cover plate, so that the structure, which can block the air inlet channel, on the cover plate is staggered with the air inlet channel, and compressed air can smoothly enter the air cavity. The caulking groove is formed in the inner wall of the shell, is located on one side, away from the sealing ring, of the cover plate, and the hole check ring is arranged in the caulking groove and used for blocking the cover plate from falling out of the shell.
The sealing washer is used for improving the leakproofness between piston and the pump body, and the spring holder is used for supplying the plunger rod to install, and the measurement plunger rod is used for guiding the motion of sealing washer, makes the sealing washer be difficult to produce the skew when the internal slip of pump to can keep better leakproofness between sealing washer and the pump body, and the measurement plunger rod can also extrude the lubricating oil in the oil duct, promotes lubricating oil to dash out the toper end cap and get into in the oil duct, and the piece that resets is then is used for driving the piston to reset, makes the volume of oil inlet chamber can become big, thereby makes the pump body can absorb oil.
An air inlet channel communicated with the air cavity is formed in the pump body, and an air discharge channel which is used for communicating the air inlet channel with the oil outlet channel is formed in the pump body and located at an air inlet of the air inlet channel. The air inlet channel is used for supplying an external air source to charge compressed air into the air cavity to push the piston, and the air outlet channel is arranged in such a way that the air outlet channel has two functions, wherein when the external air source charges air into the air cavity, namely, the piston extrudes and pumps lubricating oil, a part of compressed air enters the oil outlet channel through the air outlet channel to drive the lubricating oil in the oil outlet channel to be discharged, and the lubricating oil in the oil outlet channel is gradually stretched to form a thin continuous oil film in the flowing process, so that lubricating points of the lubricating oil can be promoted, and the conveying of the lubricating oil is facilitated; the second effect is that, because there is not the passageway of giving vent to anger on the casing, therefore when the piston resets and absorbs oil, the compressed air in the air cavity can only follow in the intake duct and withdraw from the pump body through gas vent and play oil flue in succession, and the exhaust benefit is that this part compressed air can promote the lubricating oil outflow in the oil duct when discharging like this, improves the net rate of arranging of lubricating oil in the oil duct for the oil duct is difficult to produce the jam, consequently this kind of pneumatic lubrication pump is difficult to appear the dead phenomenon of card, thereby reaches the purpose that further reduces pump body fault rate.
Fig. 6 is a schematic cross-sectional structure of a stopping mechanism of the quantitative oil-gas lubrication pump of the present application, and referring to fig. 4, the stopping mechanism includes a mounting cavity 401, a valve sleeve 402 and an oil discharge check valve 61, where the mounting cavity is opened on an end surface of a pump body oil path block opposite to a side of the shell, and is simultaneously communicated with the oil outlet path, the oil delivery path and the air outlet path, and the mounting cavity is located between the air outlet path and the oil outlet path; the valve sleeve is in a stepped shaft shape, is fixed in the installation cavity through screw thread sealing, is positioned at one end of the installation cavity and is in sealing sleeve connection with an oil outlet end of the oil conveying sleeve, the space between the middle part of the valve sleeve and the inner wall of the installation cavity is provided with a gap for air in the air discharging channel to enter the oil outlet channel after passing through, the oil discharging one-way valve is arranged in the inner cavity of the valve sleeve and is used for blocking a passage between the inner cavity of the valve sleeve and the oil conveying channel, and an oil outlet 603 for communicating the installation cavity with the inner cavity of the valve sleeve is formed in the side wall of the valve sleeve.
Further, an O-ring 611 is disposed between the valve sleeve and the oil path block, an inner cavity with a unidirectional opening is formed in one end of the valve sleeve, which is close to the oil conveying sleeve, the opening of the inner cavity of the valve sleeve is opposite to the oil outlet end of the oil conveying channel, and an oil outlet hole for communicating the inner cavity of the valve sleeve with the installation cavity is formed in the side wall of the middle part of the valve sleeve, so that lubricating oil in the oil conveying channel can be discharged into the oil outlet channel through the inner cavity of the valve sleeve and the installation cavity successively.
The mounting cavity is used for mounting a valve sleeve, the valve sleeve is used as a connecting part, and the oil discharge one-way valve is used for limiting the lubricating oil entering the valve sleeve to flow back into the oil return channel. The oil discharge check valve is arranged on the valve sleeve, on one hand, the oil discharge check valve is a main component for bearing the impact of lubricating oil, if the oil discharge check valve is directly connected with the shell, one end of the shell connected with the oil discharge check valve needs to be a closed whole, otherwise oil leakage easily occurs in the process of bearing the impact for a long time, but if one end of the shell connected with the oil discharge check valve is a closed whole, the oil discharge check valve is very troublesome to install and overhaul when faults occur, and the whole oil pumping mechanism needs to be dismantled for overhaul; after the oil discharge check valve is arranged on the pump body through the valve sleeve, the valve sleeve can serve as a connecting part between the oil discharge check valve and the shell, so that the oil discharge check valve mainly plays a role in buffering, and meanwhile, when the oil discharge check valve fails, the oil discharge check valve can be taken out through removing the valve sleeve, so that the aim of convenient overhaul is fulfilled; on the other hand, lubricating oil can first enter the inner cavity of the valve sleeve under the pressure action of the plunger rod and then enter the mounting cavity through the oil outlet hole on the valve sleeve, at the moment, the moving direction of the lubricating oil is changed, and the impact of the lubricating oil on the sealing part between the shell and the valve sleeve is weaker than that of the lubricating oil on the sealing part, so that the lubricating oil is not easy to leak, and the sealing property and portability are balanced.
Further, the oil discharging check valve comprises a check valve screw sleeve 601 which is in threaded connection in the valve sleeve inner cavity and is close to one end of the oil conveying sleeve, a movable groove 604 which is formed at the bottom of the valve sleeve inner cavity, and a check valve core 602 which is embedded in the movable groove, a conical hole 605 which is coaxial with the movable groove and is used for communicating the valve sleeve inner cavity with the oil conveying channel is formed on the check valve screw sleeve, a pressure discharging channel 606 which is used for communicating the valve sleeve inner cavity with the movable groove is formed in one end of the check valve core which is close to one end of the check valve screw sleeve, a conical plug 607 which is used for being embedded in the conical hole is integrally formed on one end of the check valve core which is close to the check valve screw sleeve, the conical plug is driven by a driving piece 608 to abut against the inner wall of the conical hole, and the check valve screw sleeve is provided with an O-shaped sealing ring 610 which is used for enhancing the tightness of the check valve screw sleeve.
The one-way valve screw sleeve is in threaded connection with the valve sleeve and seals the opening of the inner cavity of the valve sleeve, a conical hole is formed in the center of the one-way valve screw sleeve, and the diameter of the conical hole gradually decreases in the process of extending towards the oil conveying sleeve. The movable groove is arranged at the bottom of the inner cavity of the valve sleeve and is coaxial with the conical hole. The one-way valve core is rod-shaped, the one-way valve core is inserted in the movable groove in a sliding way, and a pressure discharge channel which communicates the inner cavity of the valve sleeve with the movable groove is arranged in one end of the one-way valve core, which is embedded with the movable groove. The one-way valve core is provided with a conical plug at one end close to the one-way valve screw sleeve in an integrated manner, the conical plug is embedded into the conical hole under the driving of the driving piece, the conical plug is abutted against the inner wall of the conical hole, and the conical plug is sleeved with an O-shaped sealing ring 609 for enhancing the tightness between the one-way valve screw sleeve and the one-way valve screw sleeve.
The check valve swivel nut mainly plays a role in positioning the check valve core, limits the check valve core to deflect, and the check valve core mainly plays a role in one-way conduction, so that the pressure discharge channel can keep the air pressure inside and outside the movable groove consistent, the check valve core can freely stretch and contract in the movable groove, and after the check valve swivel nut is arranged, part of lubricating oil entering the valve sleeve can also enter the movable groove to lubricate the valve sleeve and the check valve core, so that the check valve core is not easy to be blocked, and the failure rate is further reduced.
When the plunger rod extrudes the lubricating oil in the oil delivery channel, the pressure is transferred to the conical plug of the one-way valve core through the lubricating oil, so that a gap is formed between the conical plug and the inner wall of the conical hole on the screw sleeve of the one-way valve, the lubricating oil enters the inner cavity of the valve sleeve through the gap, then enters the mounting cavity through the oil outlet on the side wall of the valve sleeve, and finally is output through the oil outlet channel, and the conduction of the lubricating oil in output is realized; when the plunger rod moves towards one side of the oil delivery duct, on one hand, the driving element can drive the conical plug to be stuck on the side wall of the conical hole, on the other hand, negative pressure is generated in the oil delivery duct in the retracting process of the plunger rod, suction force is generated on the conical plug, the conical plug is more tightly stuck on the inner wall of the conical hole, and lubricating oil in the oil delivery duct is blocked from flowing backwards into the oil delivery duct, so that a better non-return effect is achieved.
Preferably, the driving piece is a spring, the driving piece is sleeved on the one-way valve core, one end of the driving piece is abutted against the bottom of the inner cavity of the valve sleeve, and the other end of the driving piece is abutted against the conical plug, so that the conical plug is driven to be abutted against the inner wall of the conical hole in the process of releasing elastic potential energy.
For the driving piece, the one-way valve core can be driven to abut against a product on the one-way valve screw sleeve, the spring is selected to be used as the driving piece, the spring is only the easiest to obtain, the manufacturing is easy, the maintenance and the replacement are convenient, and meanwhile, the cost is low, so that the purpose of reducing the maintenance difficulty is achieved.
In the using process of the pneumatic lubrication pump, when the piston moves towards one side far away from the oil conveying sleeve under the driving of the reset piece, the volumes of the oil inlet cavity and the oil conveying channel are increased simultaneously, and strong negative pressure is formed at the oil suction hole and the oil inlet hole, so that on one hand, external lubricating oil can be sucked into the oil inlet cavity through the oil suction hole, and on the other hand, lubricating oil in the oil inlet cavity can be sucked into the oil conveying channel through the oil inlet hole; and then when the piston moves towards the oil conveying sleeve under the pushing of an external air source, one part of the lubricating oil in the oil inlet cavity can flow out of the oil inlet cavity through the oil suction hole after being pressurized, and the other part of the lubricating oil can extrude the lubricating oil in the oil inlet hole to push the lubricating oil in the oil inlet cavity to enter the oil conveying channel so as to ensure that the oil conveying channel is completely filled. And the metering plunger rod can extrude the lubricating oil in the oil delivery channel, under the condition, the lubricating oil in the oil delivery channel can move towards one side of the non-return mechanism, and because the metering plunger and the piston have larger section accumulation difference, higher output pressure can be generated in the oil delivery channel, so that even if the weather is cold, the fluidity of the lubricating oil is reduced, the lubricating oil in the oil delivery channel can also jack up the non-return mechanism to enter the oil delivery channel under the action of the larger pressure, and the non-return mechanism is not easy to be blocked, so that the lubricating oil can be smoothly delivered to mechanical transmission parts through the oil delivery channel.
In the resetting process of the piston, the conical hole is blocked by the one-way valve core under the drive of the driving piece, so that the piston is required to be reset, negative pressure in the oil conveying passage is removed through the oil inlet hole, namely lubricating oil in the oil inlet cavity is sucked into the oil conveying passage when the piston is reset, and lubricating oil is pushed into the inner cavity of the valve sleeve when the plunger rod is penetrated into the oil conveying passage again, so that the influence of environmental conditions on the pneumatic lubricating pump can be reduced; meanwhile, as the oil suction hole is provided with no blocking part, the whole pump body is only provided with a non-return mechanism between the oil outlet channel and the oil delivery channel, and thus the pump is not easy to suck air and block in the use process, and has higher performance reliability, thereby achieving the purpose of reducing the failure rate.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (7)
1. A quantitative oil-gas lubrication pump is characterized by comprising a pump body with an oil inlet cavity, an oil pumping mechanism and a non-return mechanism which are arranged in the pump body,
an oil suction hole communicated with the oil inlet cavity is formed in the side wall of the pump body;
the oil pumping mechanism comprises a piston which is hermetically slid in the pump body, a plunger rod which is arranged on the piston and an oil conveying sleeve which is used for conveying lubricating oil to an external mechanism;
the oil conveying sleeve is arranged in the pump body in a sealing manner and forms the oil inlet cavity with the piston, an oil conveying passage is formed in the oil conveying sleeve, an oil inlet hole for communicating the oil conveying passage with the oil inlet cavity is formed in the side wall of the oil conveying sleeve, and an oil outlet passage communicated with the oil conveying passage is formed in the pump body;
one end of the plunger rod is arranged on the piston, and the other end of the plunger rod is hermetically penetrated in the oil conveying channel;
the non-return mechanism is arranged on the oil outlet end of the oil conveying sleeve and has a one-way non-return function and is used for preventing lubricating oil in the oil outlet channel from reversing back to the oil inlet cavity; the non-return mechanism comprises an installation cavity, a valve sleeve and an oil discharge one-way valve,
the installation cavity is arranged on the pump body and is simultaneously communicated with the oil outlet duct, the oil delivery duct and the air leakage duct, and the installation cavity is positioned between the air leakage duct and the oil outlet duct;
the valve sleeve is fixed in the mounting cavity in a sealing way, one end of the valve sleeve, which is positioned in the mounting cavity, is in sealing sleeve joint with the oil outlet end of the oil conveying sleeve, and a gap for air in the air discharge channel to pass through and then enter the oil outlet channel is reserved between the middle part of the valve sleeve and the inner wall of the mounting cavity;
the oil discharge one-way valve is arranged in the inner cavity of the valve sleeve and used for blocking a passage between the inner cavity of the valve sleeve and the oil delivery channel;
the side wall of the valve sleeve is provided with an oil outlet hole for communicating the installation cavity with the inner cavity of the valve sleeve;
an air inlet channel communicated with the air cavity is formed in the pump body, and an air leakage channel which is used for communicating the air inlet channel with the oil outlet channel is formed in the pump body and located at an air inlet of the air inlet channel; the pump body comprises a shell and an oil circuit block, the air inlet channel and the oil pumping mechanism are arranged in the shell, the non-return mechanism, the air inlet of the air inlet channel and the oil outlet channel are all positioned on the oil circuit block, and the oil circuit block is fixed at one end of the shell in a sealing way;
a straight line air hole parallel to the length direction of the shell is formed in the end face of the side, which is abutted against the oil path block, of the shell, an air injection port for communicating the straight line air hole with the inner cavity of the shell is formed in the inner wall of the end, away from the oil path block, of the shell, and a folded through hole is formed in the oil path block.
2. The quantitative oil-gas lubrication pump according to claim 1, further comprising a blocking assembly mounted on the pump body for preventing the piston from falling off,
the blocking assembly comprises a cover plate, a caulking groove and a hole check ring, wherein the cover plate is embedded in the inner cavity of the pump body in a sealing way and is respectively positioned at two sides of the piston with the oil conveying sleeve;
the side wall of the cover plate is provided with a sealing groove, and a sealing ring is embedded in the sealing groove and is used for sealing between the cover plate and the pump body;
the cover plate is provided with an adjusting threaded hole, an adjusting bolt is connected in the adjusting threaded hole in a threaded mode, an air cavity used for enabling compressed air to enter and then push the piston to move is formed between the cover plate and the piston, and the adjusting bolt is used for adjusting the distance between the piston and the cover plate.
3. The quantitative oil-gas lubrication pump of claim 2, wherein the piston comprises a sealing ring which is tightly slid in the oil inlet cavity, a spring seat fixed on the sealing ring, a reset piece arranged between the spring seat and the oil delivery sleeve and used for driving the spring seat to move towards the cover plate,
the plunger rod is detachably arranged on the spring seat, the spring seat is provided with a mounting hole for the plunger rod to be inserted and a pin hole which is perpendicular to the length direction of the plunger rod and is communicated with the mounting hole, and the plunger rod is fixed on the spring seat through a pin shaft after being inserted into the mounting hole;
one end of the resetting piece is sleeved on the spring seat, and the other end of the resetting piece is sleeved on the oil conveying sleeve.
4. A dosing oil and gas lubrication pump according to claim 3, wherein the cover plate has a plurality of auxiliary mounting locating holes distributed around the adjustment threaded hole.
5. The quantitative oil-gas lubrication pump according to claim 4, wherein the oil discharge one-way valve comprises a one-way valve screw sleeve which is connected in the valve sleeve cavity in a threaded manner and is close to one end of the oil delivery sleeve, a movable groove arranged at the bottom of the valve sleeve cavity and a one-way valve core embedded in the movable groove,
the one-way valve is characterized in that a conical hole which is coaxial with the movable groove and is used for communicating the inner cavity of the valve sleeve with the oil transportation channel is formed in the one-way valve threaded sleeve, a pressure discharging channel which is used for communicating the inner cavity of the valve sleeve with the movable groove is formed in one end of the one-way valve spool, which is close to the one-way valve threaded sleeve, and a conical plug which is used for being embedded into the conical hole is integrally formed at one end of the one-way valve spool, and the conical plug is abutted against the inner wall of the conical hole under the driving of the driving piece.
6. The quantitative oil-gas lubrication pump of claim 5, wherein the driving member is sleeved on the one-way valve core, one end of the driving member is abutted against the bottom of the inner cavity of the valve sleeve, and the other end of the driving member is abutted against the conical plug.
7. The quantitative oil and gas lubrication pump of claim 6, wherein the reset member and the drive member are springs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910021223.9A CN109854930B (en) | 2019-01-09 | 2019-01-09 | Quantitative oil-gas lubrication pump |
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| CN201910021223.9A CN109854930B (en) | 2019-01-09 | 2019-01-09 | Quantitative oil-gas lubrication pump |
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| CN109854930A CN109854930A (en) | 2019-06-07 |
| CN109854930B true CN109854930B (en) | 2024-03-26 |
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| CN112412570B (en) * | 2020-03-12 | 2022-04-15 | 江苏锡安达防爆股份有限公司 | Oil supplementing and enthalpy increasing circulating device with ejector for heat engine |
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| CN101379339A (en) * | 2006-02-10 | 2009-03-04 | 林肯有限公司 | Hydraulic device with a lubricating pump |
| CN101668948A (en) * | 2007-03-28 | 2010-03-10 | 林肯工业有限公司 | Pneumatic pump |
| CN205592622U (en) * | 2016-05-04 | 2016-09-21 | 浙江流遍机械润滑有限公司 | Well high pressure pneumatic oil lubrication pump |
| CN208185866U (en) * | 2018-05-09 | 2018-12-04 | 浙江流遍机械润滑有限公司 | A kind of minitype pneumatic grease lubrication pump |
| CN209587637U (en) * | 2019-01-09 | 2019-11-05 | 北京承乾润华机电设备有限公司 | A kind of quantitative oil-air lubrication pump |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB739082A (en) * | 1952-11-24 | 1955-10-26 | Tecalemit Ltd | Improved lubricating apparatus |
| GB1288455A (en) * | 1970-05-15 | 1972-09-13 | ||
| TWM251971U (en) * | 2004-02-06 | 2004-12-01 | Jia-Chiung Juang | Continuous type oil pump |
| CN101379339A (en) * | 2006-02-10 | 2009-03-04 | 林肯有限公司 | Hydraulic device with a lubricating pump |
| CN101668948A (en) * | 2007-03-28 | 2010-03-10 | 林肯工业有限公司 | Pneumatic pump |
| CN205592622U (en) * | 2016-05-04 | 2016-09-21 | 浙江流遍机械润滑有限公司 | Well high pressure pneumatic oil lubrication pump |
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