CN116877676A - Lubricating grease injection valve - Google Patents

Lubricating grease injection valve Download PDF

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Publication number
CN116877676A
CN116877676A CN202310639925.XA CN202310639925A CN116877676A CN 116877676 A CN116877676 A CN 116877676A CN 202310639925 A CN202310639925 A CN 202310639925A CN 116877676 A CN116877676 A CN 116877676A
Authority
CN
China
Prior art keywords
valve
rod
valve core
mounting hole
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310639925.XA
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Chinese (zh)
Inventor
阮长松
刘利明
朱正都
刘杰
刘琥铖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Marine Machinery Plant Co Ltd
Original Assignee
Wuhan Marine Machinery Plant Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Marine Machinery Plant Co Ltd filed Critical Wuhan Marine Machinery Plant Co Ltd
Priority to CN202310639925.XA priority Critical patent/CN116877676A/en
Publication of CN116877676A publication Critical patent/CN116877676A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0456—Lubrication by injection; Injection nozzles or tubes therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N23/00—Special adaptations of check valves

Abstract

The utility model provides a grease injection valve, including the valve body, first case structure, second case structure, spray the structure, the inside air flue that comprises inlet channel, first air flue, second air flue that is provided with of valve body, and by the oil duct that advances oil channel, first oil duct, second oil duct are constituteed, the entry of air flue, oil duct is connected with compressed air joint, grease joint respectively, the export of air flue, oil duct all is linked together with spray the inside structure, the break-make of gas circuit is by the inside first case structure control of setting at first mounting hole, the break-make of oil circuit is by the inside second case structure control of setting at the second mounting hole. According to the design, the air channel is controlled to be opened through the second valve core structure, then the oil channel is controlled to be opened through the second valve core structure, and finally compressed air and lubricating grease enter the injection structure together to be sprayed out of the injection structure, so that the waste of the lubricating grease and the compressed air is avoided.

Description

Lubricating grease injection valve
Technical Field
The invention belongs to the technical field of automatic lubrication systems, and particularly relates to a lubricating grease injection valve which is suitable for avoiding waste of compressed air and lubricating grease.
Background
Because the rack and pinion lifting system is an open gear transmission system, an automatic lubrication system is usually required to be installed to lubricate a transmission pinion, the existing automatic lubrication system usually transmits lubricating grease to an injection valve through a pipeline by a lubrication pump, compressed air and the lubricating grease are mixed in the injection valve, and the lubricating grease is injected onto a gear surface to be lubricated by the pressure of the compressed air.
Chinese patent: the invention of application number 202211189169.7 discloses an injection valve, which comprises a valve body, a valve core structure and an injection structure, wherein a communication channel, an oil inlet channel, an air inlet channel, an oil injection channel and an air injection channel are arranged in the valve body, compressed air can be introduced into the injection valve to spray grease when the grease is introduced through the valve core structure which is movably arranged in the communication channel and has two states, the grease and the compressed air are interlocked, the problem that only one injection valve has grease output at the same time point of a lubricating system and all injection valves are injecting the compressed air to cause waste of the compressed air is avoided, but the injection valve locks air through the grease, namely, after the pressure of the grease reaches a certain value, a gas channel is opened, and then the grease is injected to a lubricating point through the compressed air, so that the problems of grease waste and environmental pollution are caused by the fact that the grease may drop out through a nozzle before the gas channel is opened are solved.
Disclosure of Invention
The present invention has been made to overcome the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a grease injection valve capable of avoiding waste of compressed air and grease.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a grease injection valve, includes valve body, injection structure, the inside inlet channel, oil feed passageway, first mounting hole, second mounting hole, first air flue, first oil duct, second air flue, second oil duct that is provided with of valve body, the entry of inlet channel is linked together with the valve body outside, the export is linked together with valve body outside, first mounting hole B end inside respectively, the entry of first air flue, export are linked together with first mounting hole A end inside, second mounting hole A end inside respectively, the entry of first oil duct is linked together with first mounting hole B end inside, the export of second air flue is linked together with injection structure inside, export, the export of second oil duct are linked together with second mounting hole B end inside, injection structure inside respectively, injection structure sets up on the valve body for jet compressed air and lubricating grease simultaneously;
the grease injection valve further comprises a first valve core structure arranged in the first mounting hole and a second valve core structure arranged in the second mounting hole, wherein the first valve core structure and the second valve core structure are in a first state and a second state, the first valve core structure is used for enabling the air inlet channel outlet to be disconnected from the inside of the first mounting hole A end when being in the first state, the first valve core structure is used for enabling the air inlet channel outlet to be communicated with the inside of the first mounting hole A end when being in the second state, the second valve core structure is used for enabling the second air channel inlet to be disconnected from the inside of the second mounting hole A end and the inside of the first oil duct outlet to be disconnected from the inside of the second mounting hole B end when being in the first state, and the second valve core structure is used for enabling the second air channel inlet to be communicated with the inside of the second mounting hole A end and the inside of the first oil duct outlet to be communicated with the inside of the second mounting hole B end when being in the second state.
The first valve core structure is in a first state when the internal pressure of the oil inlet channel is smaller than a first preset value, and is in a second state when the internal pressure of the oil inlet channel reaches the first preset value;
the second valve core structure is in a first state when the internal pressure of the air inlet channel is smaller than a second preset value, and is in a second state when the internal pressure of the air inlet channel reaches the second preset value.
The first valve core structure comprises a first valve seat, a first valve core and a first valve rod, wherein the first valve seat and the first valve core are hollow structures with one end open, the first valve seat is arranged inside a first mounting hole A, an air inlet hole is formed in a position corresponding to an air inlet channel outlet on the first valve seat, the first valve core is arranged inside the opening end of the first valve seat, the inner wall of the first valve core is in sliding fit with the outer wall of the first valve core, a first spring abutted against the first valve seat is arranged inside the opening end of the first valve core, one end of the first valve rod is abutted against the other end of the first valve core after being inserted into the first valve seat from the opening end of the first valve seat, the outer wall of the middle part of the first valve seat is in sliding fit with the outer wall of the middle part of the first mounting hole, and the other end of the first valve core is inserted into the end B of the first mounting hole;
when the first valve core structure is in a first state, the air inlet hole is blocked by the outer wall of the first valve core;
when the first valve core structure is in the second state, the first valve rod pushes the first valve core to compress the first spring to move towards the direction away from the end B of the first mounting hole, so that an outlet of the air inlet channel is communicated with the inside of the first valve seat through the air inlet hole.
The first valve seat comprises a first valve sleeve and a first spring seat, the first valve sleeve is of a hollow structure with two open ends, the outer wall of the first valve sleeve is in threaded connection with the inner wall of the end A of the first mounting hole, the inner wall of the opening of one end of the first valve sleeve is in threaded connection with the first spring seat, one end of the first spring is located inside the opening end of the first valve core, the other end of the first spring is sleeved outside a first fixing column arranged on the first spring seat, a first inclined surface is arranged at the other end of the first valve core, the first inclined surface is in sealing fit with a second inclined surface arranged on the inner wall of the first valve sleeve when the first valve core structure is in a first state, the air inlet is formed in the first valve sleeve, and the second inclined surface is located on one side of the air inlet close to the first valve rod.
The first valve rod comprises a first end rod, a first middle rod and a second end rod, one end of the first end rod is abutted against the other end of the first valve core, the other end of the first end rod is fixedly connected with one end of the first middle rod after penetrating out from the opening end of the first valve sleeve, which is far away from the first spring seat, the side wall of the first middle rod is slidably matched with the inner wall of the middle part of the first mounting hole, a second sealing ring is arranged on the side wall of the first middle rod, the other end of the first middle rod is fixedly connected with one end of the second end rod, the other end of the second end rod is abutted against the first screw plug arranged inside the end B of the first mounting hole, the outer diameters of the first end rod and the second end rod are equal, and the outer diameters of the first end rod and the second end rod are smaller than the outer diameter of the first middle rod.
The second valve core structure comprises a second valve seat, a second valve core and a second valve rod, wherein the second valve seat and the second valve core are hollow structures with one end open, the second valve seat is arranged inside a second installation hole B end, an oil inlet hole is formed in a position corresponding to an outlet of a first oil duct on the second valve seat, the second valve core is arranged inside the second valve seat open end, the outer wall of the second valve core is in sliding fit with the inner wall of the second valve seat, a first sealing ring is arranged on the outer wall of the second valve core, a second spring which is abutted against the second valve seat is arranged inside the open end of the second valve core, one end of the second valve rod is abutted against the other end of the second valve core after being inserted into the second valve seat from the open end of the second valve seat, the outer wall of the middle part of the second valve rod is in sliding fit with the outer wall of the middle part of the second installation hole, and the other end of the second valve rod is inserted into the end A of the second installation hole;
when the second valve core structure is in the first state, the oil inlet is blocked by the outer wall of the second valve core, and the inlet of the second air passage is blocked by the outer wall of the middle part of the second valve rod;
when the second valve core structure is in a second state, the second valve rod pushes the second valve core to compress the second spring to move towards a direction away from the A end of the second mounting hole, so that an outlet of the first oil duct is communicated with the inside of the second valve seat through the oil inlet hole, and the inside of the A end of the second mounting hole is communicated with the inlet of the second air duct.
The second valve seat comprises a second valve sleeve and a second spring seat, the second valve sleeve is of a hollow structure with two open ends, the outer wall of the second valve sleeve is in threaded connection with the inner wall of the end of a second mounting hole B, the inner wall of the opening of one end of the second valve sleeve is in threaded connection with the second spring seat, one end of the second spring is located inside the opening end of a second valve core, the other end of the second spring is sleeved outside a second fixing column arranged on the second spring seat, a third inclined surface is arranged at the other end of the second valve core, the third inclined surface is in sealing fit with a fourth inclined surface arranged on the inner wall of the second valve sleeve when the second valve core structure is in a first state, the oil inlet is formed in the second valve sleeve, and the fourth inclined surface is located on one side of the oil inlet close to the second valve rod.
The second valve rod comprises a third end rod, a second middle rod and a fourth end rod, one end of the third end rod is abutted against the other end of the second valve core, the other end of the third end rod is fixedly connected with one end of the second middle rod after penetrating out from the opening end of the second valve sleeve, which is far away from the second spring seat, the side wall of the second middle rod is slidably matched with the inner wall of the middle part of the second mounting hole, the side wall of the second middle rod is used for blocking an inlet of the second air channel when the second valve core structure is in a first state, the other end of the second middle rod is fixedly connected with one end of the fourth end rod, the other end of the fourth end rod is abutted against a second screw plug arranged inside the end A of the second mounting hole, the outer diameters of the third end rod and the fourth end rod are equal, and the outer diameters of the third end rod and the fourth end rod are smaller than the outer diameter of the second middle rod.
The injection structure comprises an injection seat arranged on the valve body and a nozzle arranged on the injection seat, wherein a first injection passage and a plurality of second injection passages are arranged in the injection seat, the inlet and the outlet of the first injection passage are respectively communicated with the outlet of the second oil duct and the interior of the nozzle, and the plurality of second injection passages are arranged around the first injection passage, and the inlet and the outlet of the second injection passage are respectively communicated with the outlet of the second air duct and the interior of the nozzle.
And a third air passage is further arranged on the valve body, and the outlet of the second air passage is communicated with the inlets of the plurality of second injection passages through the third air passage.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a lubricating grease injection valve which comprises a valve body, a first valve core structure, a second valve core structure and an injection structure, wherein an air inlet channel, an oil inlet channel, a first mounting hole, a second mounting hole, a first air passage, a first oil passage, a second air passage and a second oil passage are formed in the valve body; the working process of the design is that an air channel is formed by an air inlet channel, a first air channel and a second air channel, an oil channel is formed by an oil inlet channel, a first oil channel and a second oil channel, when compressed air and grease are not connected, the first valve core structure and the second valve core structure are in a first state, the air channel and the oil channel are not communicated, after the compressed air and the grease are connected, the first valve core structure enters a second state when the pressure of the grease in the end B of a first mounting hole reaches a first preset pressure, the air channel is communicated, the compressed air enters the end A of a second mounting hole, the second valve core structure enters a second state when the pressure of the compressed air in the end A of the second mounting hole reaches a second preset pressure, the oil channel is communicated, the compressed air and the grease enter the interior of an injection structure simultaneously, and the grease is sprayed out by the injection structure to lubricate a gear surface; according to the design, compressed air and lubricating grease simultaneously enter the injection structure, so that the problem that the lubricating grease is wasted due to the fact that the lubricating grease just enters the injection structure to drop from the nozzle before the air passage is opened is effectively avoided. Therefore, the invention can avoid the waste of compressed air and grease.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a cross-sectional view taken along A-A in fig. 2.
Fig. 4 is a sectional view taken along the direction B-B in fig. 2.
Fig. 5 is an internal structural view of the present invention.
Fig. 6 is a schematic structural diagram of the first valve core structure in fig. 5.
Fig. 7 is a schematic structural diagram of the second valve core structure in fig. 5.
Fig. 8 is a schematic view of the spray structure of fig. 5.
Fig. 9 is a schematic view of the first valve core structure in the second state in the present invention.
Fig. 10 is a schematic view of the second valve core structure in the second state in the present invention.
In the drawing, a valve body 1, an intake passage 11, an intake passage 12, a first mounting hole 13, a second mounting hole 14, a first air passage 15, a first oil passage 16, a second air passage 17, a second oil passage 18, a third air passage 19, an injection structure 2, an injection seat 21, a first injection passage 211, a second injection passage 212, a nozzle 22, a first spool structure 3, a first valve seat 31, an intake port 311, a first valve housing 312, a first spring seat 313, a first fixing post 314, a second inclined surface 315, a first spool 32, a first inclined surface 321, a first valve stem 33, a first end rod 331, a first intermediate rod 332, a second end rod 333, a second sealing ring 334, a first spring 34, a first plug 35, a second spool structure 4, a second valve seat 41, an intake hole 411, a second valve seat 412, a second spring seat 413, a second fixing post 414, a fourth inclined surface 415, a second spool 42, a first sealing ring 421, a third inclined surface 422, a second valve stem 43, a third end rod 431, a second intermediate rod 432, a fourth end rod 433, a fourth end rod 44, and a second plug spring 45.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
Referring to fig. 1 to 10, a grease injection valve comprises a valve body 1 and an injection structure 2, wherein an air inlet channel 11, an oil inlet channel 12, a first mounting hole 13, a second mounting hole 14, a first air channel 15, a first oil channel 16, a second air channel 17 and a second oil channel 18 are arranged in the valve body 1, the inlet and the outlet of the air inlet channel 11 are respectively communicated with the outside of the valve body 1 and the inside of a first mounting hole 13B end, the inlet and the outlet of the first air channel 15 are respectively communicated with the inside of a first mounting hole 13A end and the inside of a second mounting hole 14A end, the inlet of the first oil channel 16 is communicated with the inside of a first mounting hole 13B end, the outlet of the second air channel 17 is communicated with the inside of the injection structure 2, the outlet and the outlet of the second oil channel 18 are respectively communicated with the inside of a second mounting hole 14B end and the inside of the injection structure 2, and the injection structure 2 is arranged on the valve body 1 for simultaneously injecting compressed air and grease;
the grease injection valve further comprises a first valve core structure 3 arranged in the first mounting hole 13 and a second valve core structure 4 arranged in the second mounting hole 14, the first valve core structure 3 and the second valve core structure 4 are in a first state and a second state, the first valve core structure 3 is used for disconnecting the outlet of the air inlet channel 11 from the inside of the first mounting hole 13A end when in the first state, the first valve core structure 3 is used for communicating the outlet of the air inlet channel 11 with the inside of the first mounting hole 13A end when in the second state, the second valve core structure 4 is used for disconnecting the inlet of the second air channel 17 from the inside of the second mounting hole 14A end and the outlet of the first oil duct 16 from the inside of the second mounting hole 14B end when in the first state, and the second valve core structure 4 is used for communicating the inlet of the second air channel 17 from the inside of the second mounting hole 14A end and the outlet of the first oil duct 16 from the inside of the second mounting hole 14B end when in the second state.
The first valve core structure 3 is in a first state when the internal pressure of the air inlet channel 11 is smaller than a first preset value, and is in a second state when the internal pressure of the oil inlet channel 12 reaches the first preset value;
the second valve core structure 4 is in a first state when the internal pressure of the oil inlet channel 12 is smaller than a second preset value, and is in a second state when the internal pressure of the oil inlet channel 12 reaches the second preset value.
The first valve core structure 3 comprises a first valve seat 31, a first valve core 32 and a first valve rod 33, wherein the first valve seat 31 and the first valve core 32 are hollow structures with one end open, the first valve seat 31 is arranged inside the end of the first mounting hole 13A, an air inlet hole 311 is formed in a position corresponding to the outlet of the air inlet channel 11, the first valve core 32 is arranged inside the opening end of the first valve seat 31, the inner wall of the first valve core 32 is in sliding fit with the outer wall of the first valve core 32, a first spring 34 abutted against the first valve seat 31 is arranged inside the opening end of the first valve core 32, one end of the first valve rod 33 is abutted against the other end of the first valve core 32 after being inserted into the first valve seat 31 from the opening end of the first valve seat 31, the outer wall of the middle part of the first valve rod is in sliding fit with the outer wall of the middle part of the first mounting hole 13, and the other end of the first valve rod is inserted into the end B of the first mounting hole 13;
when the first valve core structure 3 is in the first state, the air inlet hole 311 is blocked by the outer wall of the first valve core 32;
when the first valve core structure 3 is in the second state, the first valve rod 33 pushes the first valve core 32 to compress the first spring 34 to move in a direction away from the end of the first mounting hole 13B, so that the outlet of the air inlet channel 11 is communicated with the interior of the first valve seat 31 through the air inlet hole 311.
The first valve seat 31 includes a first valve sleeve 312 and a first spring seat 313, the first valve sleeve 312 is a hollow structure with two open ends, the outer wall of the first valve sleeve 312 is in threaded connection with the inner wall of the first mounting hole 13A, the inner wall of the opening at one end of the first valve sleeve is in threaded connection with the first spring seat 313, one end of the first spring 34 is located inside the opening end of the first valve core 32, the other end of the first spring 34 is sleeved outside a first fixing column 314 arranged on the first spring seat 313, a first inclined surface 321 is arranged at the other end of the first valve core 32, the first inclined surface 321 is in sealing fit with a second inclined surface 315 arranged on the inner wall of the first valve sleeve 312 when the first valve core structure 3 is in a first state, the air inlet hole 311 is formed in the first valve sleeve 312, and the second inclined surface 315 is located on one side of the air inlet hole 311 close to the first valve rod 33.
The first valve rod 33 includes a first end rod 331, a first middle rod 332, and a second end rod 333, one end of the first end rod 331 is abutted against the other end of the first valve core 32, the other end of the first end rod 331 is fixedly connected with one end of the first middle rod 332 after penetrating out from the open end of the first valve sleeve 312 far away from the first spring seat 313, the side wall of the first middle rod 332 is slidably matched with the inner wall in the middle of the first mounting hole 13, a second sealing ring 334 is disposed on the side wall of the first middle rod 332, the other end of the first middle rod 332 is fixedly connected with one end of the second end rod 333, the other end of the second end rod 333 is abutted against a first plug 35 disposed inside the first mounting hole 13B, the outer diameters of the first end rod 331 and the second end rod 333 are equal, and the outer diameters of the first end rod 331 and the second end rod 333 are smaller than the outer diameter of the first middle rod 332.
The second valve core structure 4 includes a second valve seat 41, a second valve core 42, and a second valve rod 43, where the second valve seat 41 and the second valve core 42 are hollow structures with one open end, the second valve seat 41 is disposed inside the second mounting hole 14B, an oil inlet 411 is disposed at a position corresponding to the outlet of the first oil duct 16, the second valve core 42 is disposed inside the open end of the second valve seat 41, the outer wall of the second valve core 42 is slidably engaged with the inner wall of the second valve seat 41, a first sealing ring 421 is disposed on the outer wall of the second valve core 42, a second spring 44 abutting against the second valve seat 41 is disposed inside the open end of the second valve rod 43, one end of the second valve rod 43 is inserted into the second valve seat 41 from the open end of the second valve seat 41 and abuts against the other end of the second valve core 42, the middle outer wall of the second valve rod is slidably engaged with the middle outer wall of the second mounting hole 14, and the other end of the second valve rod is inserted into the a end of the second mounting hole 14;
when the second valve core structure 4 is in the first state, the oil inlet 411 is blocked by the outer wall of the second valve core 42, and the inlet of the second air passage 17 is blocked by the middle outer wall of the second valve rod 43;
when the second valve core structure 4 is in the second state, the second valve rod 43 pushes the second valve core 42 to compress the second spring 44 to move in a direction away from the end of the second mounting hole 14A, so that the outlet of the first oil duct 16 is communicated with the inside of the second valve seat 41 through the oil inlet 411, and the inside of the end a of the second mounting hole 14 is communicated with the inlet of the second air duct 17.
The second valve seat 41 includes a second valve sleeve 412 and a second spring seat 413, the second valve sleeve 412 is a hollow structure with two open ends, the outer wall of the second valve sleeve 412 is in threaded connection with the inner wall of the second mounting hole 14B, the inner wall of the opening at one end of the second valve sleeve is in threaded connection with the second spring seat 413, one end of the second spring 44 is located inside the open end of the second valve core 42, the other end of the second spring 44 is sleeved outside a second fixing column 414 provided on the second spring seat 413, a third inclined surface 422 is provided on the other end of the second valve core 42, the third inclined surface 422 is in sealing fit with a fourth inclined surface 415 provided on the inner wall of the second valve sleeve 412 when the second valve core structure 4 is in a first state, the oil inlet 411 is provided on the second valve sleeve 412, and the fourth inclined surface 415 is located on one side of the oil inlet 411 close to the second valve rod 43.
The second valve rod 43 includes a third end rod 431, a second middle rod 432, and a fourth end rod 433, where one end of the third end rod 431 is abutted against the other end of the second valve core 42, the other end of the third end rod is fixedly connected with one end of the second middle rod 432 after penetrating out from the open end of the second valve sleeve 412 far away from the second spring seat 413, the side wall of the second middle rod 432 is slidably matched with the inner wall in the middle of the second mounting hole 14, the side wall of the second middle rod 432 is in a first state to block the inlet of the second air channel 17, the other end of the second middle rod 432 is fixedly connected with one end of the fourth end rod 433, the other end of the fourth end rod 433 is abutted against a second screw plug 45 disposed inside the second mounting hole 14A, the outer diameters of the third end rod 431 and the fourth end rod 433 are equal, and the outer diameters of the third end rod 431 and the fourth end rod 433 are smaller than the outer diameters of the second middle rod 432.
The injection structure 2 comprises an injection seat 21 mounted on the valve body 1 and a nozzle 22 mounted on the injection seat 21, wherein a first injection passage 211 and a plurality of second injection passages 212 are arranged in the injection seat 21, the inlet and the outlet of the first injection passage 211 are respectively communicated with the outlet of the second oil duct 18 and the interior of the nozzle 22, the plurality of second injection passages 212 are arranged around the first injection passage 211, and the inlet and the outlet of the second injection passage 212 are respectively communicated with the outlet of the second air duct 17 and the interior of the nozzle 22.
The valve body 1 is further provided with a third air passage 19, and the outlet of the second air passage 17 is communicated with the inlets of the plurality of second injection passages 212 through the third air passage 19.
Example 1:
referring to fig. 1 to 8, a grease injection valve comprises a valve body 1, an injection structure 2, a first valve core structure 3 and a second valve core structure 4, wherein the injection structure 2 is arranged on the valve body 1 and is used for injecting compressed air and grease at the same time, an air inlet channel 11, an oil inlet channel 12, a first mounting hole 13, a second mounting hole 14, a first air channel 15, a first oil channel 16, a second air channel 17 and a second oil channel 18 are arranged in the valve body 1, the first valve core structure 3 and the second valve core structure 4 are respectively arranged in the first mounting hole 13 and the second mounting hole 14, the first valve core structure 3 comprises a first valve seat 31, a first valve core 32, a first valve rod 33 and a first spring 34, the first valve seat 31 comprises a first valve sleeve 312 and a first spring seat 313, the first valve sleeve 312 is a hollow structure with two open ends, the outer wall of the first valve core 32 is in threaded connection with the inner wall of the end A of the first mounting hole 13, the inner wall of the opening end of the first valve core 32 is in threaded connection with a first spring seat 313, an air inlet hole 311 is formed in the position corresponding to the outlet of the air inlet channel 11 at the middle part of the first valve core, the first valve core 32 is arranged in the other opening end of the first valve sleeve 312, the inner wall of the first valve core 32 is in sliding fit with the outer wall of the first valve core 32, the first valve core 32 is of a hollow structure with one open end, one end of the first spring 34 is arranged in the opening end of the first valve core 32, the other end of the first spring 34 is sleeved outside a first fixing column 314 arranged on the first spring seat 313, one end of the first valve rod 33 is abutted against the first valve core 32 after being inserted into the first valve seat 31 from the other opening end of the first valve seat 31, the middle outer wall of the first valve rod 33 is in sliding fit with the middle outer wall of the first mounting hole 13, the other end of the first valve rod 33 is inserted into the end B of the first mounting hole 13 and then abuts against the first plug 35 fixed in the end B of the first mounting hole 13, the second valve core structure 4 comprises a second valve seat 41, a second valve core 42, a second valve rod 43 and a second spring 44, the second valve seat 41 comprises a second valve sleeve 412 and a second spring seat 413, the second valve sleeve 412 is a hollow structure with two open ends, the outer wall of the second valve sleeve 412 is in threaded connection with the inner wall of the end B of the second mounting hole 14, the inner wall of the first open end is in threaded connection with the second spring seat 413, an oil inlet hole 411 is formed in a part of the middle part of the second valve core 42 corresponding to the outlet of the first oil duct 16, the outer wall of the second valve core 42 is in sliding fit with the inner wall of the second valve seat 41, one end of the second valve core 42 is in a hollow structure with one open end, one end of the second spring 44 is positioned in the open end of the second valve core 42, the other end of the second valve core is sleeved outside the second fixing column 414 arranged on the second spring seat 413, one end of the second valve rod 43 is inserted into the middle part of the second valve seat 41 from the other open end of the second valve seat 41 and then abuts against the inner wall of the second valve seat 14, and then abuts against the middle part of the second plug 14 is mounted in the middle part of the second valve core 43 a, and then abuts against the middle part of the second valve rod 43 is mounted on the middle part of the second valve rod 14 is mounted on the middle part of the second valve rod;
the inlet and the outlet of the oil inlet channel 12 are respectively connected with the grease joint and the inside of the end of the first mounting hole 13B, the inlet and the outlet of the first air channel 15 are respectively communicated with the inside of the end of the first mounting hole 13A and the inside of the end of the second mounting hole 14A, the inlet of the first air channel 16 is communicated with the inside of the end of the first mounting hole 13B, the outlet of the second air channel 17 is communicated with the inside of the injection structure 2, and the outlet of the second air channel 18 are respectively communicated with the inside of the end of the second mounting hole 14B and the inside of the injection structure 2;
referring to fig. 9, the on-off between the outlet of the air inlet channel 11 and the inside of the first mounting hole 13A end is determined by the working state of the first valve core structure 3: the initial state of the first valve core structure 3 is a first state, at this time, the air inlet hole 311 is blocked by the outer wall of the first valve core 32, so that the outlet of the air inlet channel 11 is blocked from the interior of the first valve seat 31, after the grease is connected to the grease through the grease connector on the oil inlet channel 12, the pressure of the grease in the end of the first mounting hole 13B is increased, when the pressure is increased to a first preset value, the first valve rod 33 pushes the first valve core 32 to overcome the spring force of the first spring 34 and move in a direction away from the end of the first mounting hole 13B, so that the first valve core structure 3 enters a second state, the outlet of the air inlet channel 11 is communicated with the interior of the first valve seat 31 through the air inlet hole 311, the air passage is opened, the grease connector is not connected to the grease, and then the first valve core structure 3 returns to the first state under the action force of the first spring 34, and the air passage is closed;
referring to fig. 10, the on-off of the inlet of the second air passage 17 and the inside of the second mounting hole 14A end, and the on-off of the first oil passage outlet 16 and the inside of the second mounting hole 14B end are all determined by the working state of the second valve core structure 4: the initial state of the second valve core structure 4 is a first state, at this time, the oil inlet 411 is plugged by the outer wall of the second valve core 42, the inlet of the second air channel 17 is plugged by the outer wall of the middle part of the second valve rod 43, so that the outlet of the first oil duct 16 is isolated from the inside of the second valve seat 41, the inside of the end a of the second mounting hole 14 is isolated from the inlet of the second air channel 17, after the first valve core structure 3 enters the second state from the first state to open the air channel, compressed air enters the inside of the end a of the second mounting hole 14 from the compressed air joint, the pressure of the compressed air in the inside of the end a of the second mounting hole 14 is increased, when the pressure is increased to a second preset value, the second valve rod 43 pushes the second valve core 42 to move towards a direction far away from the end a of the second mounting hole 14 against the spring force of the second spring 44, so that the outlet of the first oil duct 16 is communicated with the inside of the second valve seat 41 through the oil inlet 411, the inside of the end a of the second mounting hole 14 is communicated with the inlet of the second air channel 17, the inside of the second valve core structure 4 enters the second state, the compressed air is opened, and the compressed air returns to the second valve core structure 4 after the compressed air joint is not connected to the second valve core structure 4;
when compressed air and grease are not connected, the first valve core structure 3 and the second valve core structure 4 are in a first state, the air passage and the oil passage are closed, after the compressed air and the grease are connected, the first valve core structure 3 enters a second state when the pressure of the grease reaches a first preset value, the air passage is opened, when the pressure of the compressed air reaches a second preset value, the second valve core structure 4 enters the second state, the oil passage is opened, at the moment, the compressed air and the grease simultaneously enter the injection structure 2, and the grease is injected out under the action of the pressure of the compressed air.
Example 2:
the difference from example 1 is that:
a first inclined surface 321 is arranged at one end of the first valve core 32 far away from the opening end of the first valve core, the first inclined surface 321 is in sealing fit with a second inclined surface 315 arranged on the inner wall of the first valve sleeve 312 when the first valve core structure 3 is in a first state, and the second inclined surface 315 is positioned at one side of the air inlet hole 311 close to the first valve rod 33;
the outer wall of the second valve core 42 is provided with a first sealing ring 421, one end of the second valve core 42 away from the opening end thereof is provided with a third inclined plane 422, the third inclined plane 422 is in sealing fit with a fourth inclined plane 415 arranged on the inner wall of the second valve sleeve 412 when the second valve core structure 4 is in the first state, and the fourth inclined plane 415 is located at one side of the oil inlet 411 close to the second valve rod 43.
Example 3:
the difference from example 1 is that:
the first valve rod 33 includes a first end rod 331, a first middle rod 332, and a second end rod 333, one end of the first end rod 331 abuts against the other end of the first valve core 32, the other end of the first end rod 331 is fixedly connected with one end of the first middle rod 332 after penetrating out from an opening end of the first valve sleeve 312 far away from the first spring seat 313, a side wall of the first middle rod 332 is slidably matched with an inner wall in the middle of the first mounting hole 13, a second sealing ring 334 is disposed on a side wall of the first middle rod 332, the other end of the first middle rod 332 is fixedly connected with one end of the second end rod 333, the other end of the second end rod 333 abuts against a first plug 35 disposed inside the first mounting hole 13B, the outer diameters of the first end rod 331 and the second end rod 333 are equal, and the outer diameters of the first end rod 331 and the second end rod 333 are smaller than the outer diameter of the first middle rod 332;
the second valve rod 43 includes a third end rod 431, a second middle rod 432, and a fourth end rod 433, where one end of the third end rod 431 is abutted against the other end of the second valve core 42, the other end of the third end rod is fixedly connected with one end of the second middle rod 432 after penetrating out from the open end of the second valve sleeve 412 far away from the second spring seat 413, the side wall of the second middle rod 432 is slidably matched with the inner wall in the middle of the second mounting hole 14, the side wall of the second middle rod 432 is in a first state to block the inlet of the second air channel 17, the other end of the second middle rod 432 is fixedly connected with one end of the fourth end rod 433, the other end of the fourth end rod 433 is abutted against a second screw plug 45 disposed inside the second mounting hole 14A, the outer diameters of the third end rod 431 and the fourth end rod 433 are equal, and the outer diameters of the third end rod 431 and the fourth end rod 433 are smaller than the outer diameters of the second middle rod 432.
Example 4:
the difference from example 1 is that:
the injection structure 2 comprises an injection seat 21 mounted on the valve body 1 and a nozzle 22 mounted on the injection seat 21, wherein a first injection passage 211 and a plurality of second injection passages 212 are arranged in the injection seat 21, the inlet and the outlet of the first injection passage 211 are respectively communicated with the outlet of the second oil duct 18 and the interior of the nozzle 22, the plurality of second injection passages 212 are arranged around the first injection passage 211, and the inlet and the outlet of the second injection passage 212 are respectively communicated with the outlet of the second air duct 17 and the interior of the nozzle 22.
Example 5:
the difference from example 4 is that:
the valve body 1 is further provided with a third air passage 19, and the outlet of the second air passage 17 is communicated with the inlets of the plurality of second injection passages 212 through the third air passage 19.

Claims (10)

1. The utility model provides a lubricating grease injection valve, includes valve body (1), injection structure (2), its characterized in that:
the lubricating grease injection valve is characterized in that an air inlet channel (11), an oil inlet channel (12), a first mounting hole (13), a second mounting hole (14), a first air passage (15), a first oil passage (16), a second air passage (17) and a second oil passage (18) are arranged in the valve body (1), an inlet of the air inlet channel (11) is communicated with the outside of the valve body (1), an inlet and an outlet of the oil inlet channel (12) are respectively communicated with the outside of the valve body (1) and the inside of a B end of the first mounting hole (13), an inlet and an outlet of the first air passage (15) are respectively communicated with the inside of a A end of the first mounting hole (13) and the inside of a A end of the second mounting hole (14), an inlet of the first oil passage (16) is communicated with the inside of a B end of the first mounting hole (13), an outlet of the second air passage (17) is respectively communicated with the inside of the second mounting hole (14) and the inside of the injection structure (2), and the outlet of the second air passage (18) are respectively communicated with the inside of the B end of the second mounting hole (14) and the injection structure (2), and the lubricating grease injection valve body (1) is arranged on the valve body and used for compressing lubricating grease simultaneously;
the grease injection valve further comprises a first valve core structure (3) arranged inside the first mounting hole (13) and a second valve core structure (4) arranged inside the second mounting hole (14), wherein the first valve core structure (3) and the second valve core structure (4) are respectively provided with a first state and a second state, the first valve core structure (3) is used for enabling an inlet of the air inlet channel (11) to be disconnected from the inside of the A end of the first mounting hole (13) when being in the first state, the first valve core structure (3) is used for enabling an outlet of the air inlet channel (11) to be communicated with the inside of the A end of the first mounting hole (13) when being in the second state, the second valve core structure (4) is used for enabling an inlet of the second air channel (17) to be disconnected from the inside of the A end of the second mounting hole (14) and an outlet of the first oil duct (16) to be disconnected from the inside of the B end of the second mounting hole (14) when being in the second state, and the second valve core structure (4) is used for enabling an inlet of the second air channel (17) to be communicated with the inside of the A end of the second mounting hole (14) and the inside of the B end of the second oil duct (16) to be connected with the inside of the B end of the first valve core structure (4).
2. A grease injection valve according to claim 1, characterized in that:
the first valve core structure (3) is in a first state when the internal pressure of the oil inlet channel (12) is smaller than a first preset value, and is in a second state when the internal pressure of the oil inlet channel is up to the first preset value;
the second valve core structure (4) is in a first state when the internal pressure of the air inlet channel (11) is smaller than a second preset value, and is in a second state when the internal pressure of the air inlet channel is up to the second preset value.
3. A grease injection valve according to claim 1 or 2, characterized in that:
the first valve core structure (3) comprises a first valve seat (31), a first valve core (32) and a first valve rod (33), wherein the first valve seat (31) and the first valve core (32) are hollow structures with one end open, the first valve seat (31) is arranged inside the A end of the first mounting hole (13), an air inlet hole (311) is formed in a position corresponding to an outlet of the air inlet channel (11) on the first valve seat, the first valve core (32) is arranged inside the opening end of the first valve seat (31), the inner wall of the first valve core is in sliding fit with the outer wall of the first valve core (32), a first spring (34) abutted against the first valve seat (31) is arranged inside the opening end of the first valve rod (33), one end of the first valve rod (33) is abutted against the other end of the first valve core (32) after being inserted into the opening end of the first valve seat (31), the middle outer wall of the first valve seat is in sliding fit with the middle outer wall of the first mounting hole (13), and the other end of the first valve rod is inserted into the B end of the first mounting hole (13);
when the first valve core structure (3) is in a first state, the air inlet holes (311) are blocked by the outer wall of the first valve core (32);
when the first valve core structure (3) is in the second state, the first valve rod (33) pushes the first valve core (32) to compress the first spring (34) to move in a direction away from the end B of the first mounting hole (13), so that an outlet of the air inlet channel (11) is communicated with the inside of the first valve seat (31) through the air inlet hole (311).
4. A grease injection valve according to claim 3, characterized in that:
the first valve seat (31) comprises a first valve sleeve (312) and a first spring seat (313), the first valve sleeve (312) is of a hollow structure with two open ends, the outer wall of the first valve sleeve is in threaded connection with the inner wall of the A end of the first mounting hole (13), the inner wall of the opening of one end of the first valve sleeve is in threaded connection with the first spring seat (313), one end of the first spring (34) is located inside the opening end of the first valve core (32), the other end of the first spring is sleeved outside a first fixing column (314) arranged on the first spring seat (313), a first inclined surface (321) is arranged at the other end of the first valve core (32), the first inclined surface (321) is in sealing fit with a second inclined surface (315) arranged on the inner wall of the first valve sleeve (312) when the first valve core structure (3) is in a first state, the air inlet hole (311) is formed in the first valve sleeve (312), and the second inclined surface (315) is located on one side of the air inlet hole (311) close to the first valve rod (33).
5. A grease injection valve according to claim 4, wherein:
the first valve rod (33) comprises a first end rod (331), a first middle rod (332) and a second end rod (333), one end of the first end rod (331) is abutted against the other end of the first valve core (32), the other end of the first end rod is abutted against a first plug (35) arranged inside the end B of the first mounting hole (13) and is fixedly connected with one end of the first middle rod (332) after penetrating out from the opening end of the first valve sleeve (312), the side wall of the first middle rod (332) is slidably matched with the inner wall in the middle of the first mounting hole (13), a second sealing ring (334) is arranged on the side wall of the first middle rod (332), the other end of the first middle rod (332) is fixedly connected with one end of the second end rod (333), the other end of the second end rod (333) is abutted against the first plug (35) arranged inside the end B of the first mounting hole (13), and the outer diameters of the first end rod (331) and the second end rod (333) are equal to each other.
6. A grease injection valve according to claim 1 or 2, characterized in that:
the second valve core structure (4) comprises a second valve seat (41), a second valve core (42) and a second valve rod (43), wherein the second valve seat (41) and the second valve core (42) are hollow structures with one end open, the second valve seat (41) is arranged inside a second mounting hole (14) B end, an oil inlet hole (411) is formed in a position corresponding to an outlet of the first oil duct (16) on the second valve seat, the second valve core (42) is arranged inside the opening end of the second valve seat (41), the outer wall of the second valve core is in sliding fit with the inner wall of the second valve seat (41), a first sealing ring (421) is arranged on the outer wall of the second valve core, a second spring (44) which is in abutting joint with the second valve seat (41) is arranged inside the opening end of the second valve rod (43), one end of the second valve rod (43) is in abutting joint with the other end of the second valve core (42) after being inserted into the opening end of the second valve seat (41), the middle outer wall of the second valve rod is in sliding fit with the middle outer wall of the second mounting hole (14), and the other end of the second valve rod is inserted into the end A inside the second mounting hole (14);
when the second valve core structure (4) is in a first state, the oil inlet hole (411) is blocked by the outer wall of the second valve core (42), and the inlet of the second air passage (17) is blocked by the outer wall of the middle part of the second valve rod (43);
when the second valve core structure (4) is in a second state, the second valve rod (43) pushes the second valve core (42) to compress the second spring (44) to move towards a direction away from the A end of the second mounting hole (14), so that an outlet of the first oil duct (16) is communicated with the inside of the second valve seat (41) through the oil inlet hole (411), and the inside of the A end of the second mounting hole (14) is communicated with an inlet of the second air passage (17).
7. A grease injection valve according to claim 6, wherein:
the second valve seat (41) comprises a second valve sleeve (412) and a second spring seat (413), the second valve sleeve (412) is of a hollow structure with two open ends, the outer wall of the second valve sleeve is in threaded connection with the inner wall of the end B of the second mounting hole (14), the inner wall of the opening of one end of the second valve sleeve is in threaded connection with the second spring seat (413), one end of the second spring (44) is located inside the opening end of the second valve core (42), the other end of the second spring is sleeved outside a second fixing column (414) arranged on the second spring seat (413), a third inclined surface (422) is arranged at the other end of the second valve core (42), the third inclined surface (422) is in sealing fit with a fourth inclined surface (415) arranged on the inner wall of the second valve sleeve (412) when the second valve core structure (4) is in a first state, the oil inlet hole (411) is formed in the second valve sleeve (412), and the fourth inclined surface (415) is located on one side, close to the second valve rod (43).
8. A grease injection valve according to claim 7, wherein:
the second valve rod (43) comprises a third end rod (431), a second middle rod (432) and a fourth end rod (433), one end of the third end rod (431) is abutted against the other end of the second valve core (42), the other end of the third end rod is fixedly connected with one end of the second middle rod (432) after penetrating out from the opening end of the second valve sleeve (412) far away from the second spring seat (413), the side wall of the second middle rod (432) is in sliding fit with the inner wall of the middle of the second mounting hole (14), the side wall of the second middle rod (432) is used for blocking the inlet of the second air channel (17) when the second valve core structure (4) is in a first state, the other end of the second middle rod (432) is fixedly connected with one end of the fourth end rod (433), the other end of the fourth end rod (433) is abutted against a second screw plug (45) arranged inside the end A of the second mounting hole (14), and the outer diameter of the third end rod (431) is equal to the outer diameter of the fourth end rod (433) and the outer diameter of the second middle rod (433) is smaller than the outer diameter of the second end rod (433).
9. A grease injection valve according to claim 1 or 2, characterized in that:
the injection structure (2) comprises an injection seat (21) arranged on the valve body (1) and a nozzle (22) arranged on the injection seat (21), wherein a first injection passage (211) and a plurality of second injection passages (212) are arranged in the injection seat (21), the inlet and the outlet of the first injection passage (211) are respectively communicated with the outlet of the second oil duct (18) and the interior of the nozzle (22), the plurality of second injection passages (212) are arranged around the first injection passage (211), and the inlet and the outlet of the second injection passage (212) are respectively communicated with the outlet of the second air duct (17) and the interior of the nozzle (22).
10. A grease injection valve according to claim 9, characterized in that:
the valve body (1) is further provided with a third air passage (19), and the outlet of the second air passage (17) is communicated with the inlets of the second injection passages (212) through the third air passage (19).
CN202310639925.XA 2023-06-01 2023-06-01 Lubricating grease injection valve Pending CN116877676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310639925.XA CN116877676A (en) 2023-06-01 2023-06-01 Lubricating grease injection valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310639925.XA CN116877676A (en) 2023-06-01 2023-06-01 Lubricating grease injection valve

Publications (1)

Publication Number Publication Date
CN116877676A true CN116877676A (en) 2023-10-13

Family

ID=88261117

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310639925.XA Pending CN116877676A (en) 2023-06-01 2023-06-01 Lubricating grease injection valve

Country Status (1)

Country Link
CN (1) CN116877676A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117605807A (en) * 2024-01-24 2024-02-27 浙江万里扬股份有限公司杭州分公司 Power split harmonic speed reducer
CN117605807B (en) * 2024-01-24 2024-05-10 浙江万里扬股份有限公司杭州分公司 Power split harmonic speed reducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117605807A (en) * 2024-01-24 2024-02-27 浙江万里扬股份有限公司杭州分公司 Power split harmonic speed reducer
CN117605807B (en) * 2024-01-24 2024-05-10 浙江万里扬股份有限公司杭州分公司 Power split harmonic speed reducer

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