injection valve
By designing the valve core structure of the injection valve to control the grease and compressed air channels, the problems of air waste and poor lubrication in the existing technology are solved, achieving efficient grease injection and economical use of air.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-09-28
- Publication Date
- 2026-03-27
AI Technical Summary
In existing automatic lubrication systems, the grease and compressed air in the injection valve cannot interlock, resulting in wasted compressed air and poor lubrication.
A spray valve was designed, comprising a valve body, a valve core structure, and a spray structure. The movement state of the valve core structure controls the connection and isolation of the channels between the grease and compressed air, thereby enabling the grease to be flexibly sprayed out under the action of compressed air and saving air usage.
It effectively avoids wasting compressed air, improves air utilization, ensures that grease is accurately sprayed to the lubrication points, and enhances the lubrication effect.
Smart Images
Figure CN115585382B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure belongs to the technical field of automatic lubrication systems, and particularly relates to a spray valve. BACKGROUND
[0002] A rack and pinion lifting system usually needs to be installed with an automatic lubrication system to lubricate the transmission gears. The so-called automatic lubrication system is to deliver lubricating grease to a spray valve through a pipeline by a lubricating pump, and then to mix compressed air into the spray valve and the lubricating grease, and to spray the lubricating grease in the spray valve to the gear surface of the transmission gears to be lubricated by the pressure of the compressed air.
[0003] In the related art, the lubricating pump in the automatic lubrication system periodically delivers lubricating grease to each spray valve, and then sprays to the gear surface to be lubricated.
[0004] Since the lubricating grease and the compressed air in the spray valve in the above automatic lubrication system cannot be interlocked, that is, at the same time point, only one spray valve in the automatic lubrication system has lubricating grease output, and all the spray valves are spraying compressed air, which causes waste of compressed air, low utilization rate, and easy to cause insufficient compressed air pressure to cause the lubricating grease not to be sprayed to the lubrication point, and poor lubrication effect. SUMMARY
[0005] The present disclosure provides a spray valve which can introduce compressed air into the spray valve to spray lubricating grease when the lubricating grease is introduced, thereby avoiding waste of compressed air. The technical solution is as follows:
[0006] The injection valve provided by the embodiments of the present disclosure comprises a valve body, a valve core structure and an injection structure, the valve body has a communication channel, an oil inlet channel, an air inlet channel, an oil injection channel and an air injection channel inside, the first end of the oil inlet channel, the first end of the air inlet channel, the first end of the oil injection channel and the first end of the air injection channel are communicated with the communication channel, the second end of the oil inlet channel is used to introduce lubricating grease into the inside of the valve body, the second end of the air inlet channel is used to introduce compressed air into the inside of the valve body, the second end of the oil injection channel is used to spray lubricating grease, and the second end of the air injection channel is used to spray compressed air; the valve core structure is movably located in the communication channel, and the valve core structure has a first state and a second state, when the valve core structure is in the first state, the communication channel communicates the first end of the oil inlet channel with the first end of the oil injection channel, and communicates the first end of the air inlet channel with the first end of the air injection channel, when the valve core structure is in the second state, the valve core structure blocks the oil inlet channel and the oil injection channel, and blocks the air inlet channel and the air injection channel; the injection structure is connected with the valve body and connected with the second end of the oil injection channel and the second end of the air injection channel.
[0007] In another implementation manner of the present disclosure, the valve core structure comprises a top rod and a one-way valve, the one-way valve is fixed in the communication channel, the first valve port of the one-way valve is communicated with the first end of the air inlet channel, and the second valve port is communicated with the first end of the air injection channel, the top rod is movably located in the communication channel, and one end of the top rod abuts against the valve core of the one-way valve, the top rod is used to push the valve core to make the first valve port and the second valve port of the one-way valve open when the pressure in the oil inlet channel is greater than a preset value, and the one-way valve is closed when the pressure in the oil inlet channel is less than the preset value.
[0008] In another implementation manner of the present disclosure, the top rod comprises a first end rod, an intermediate rod and a second end rod connected in sequence, the outer diameter of the first end rod and the outer diameter of the second end rod are both smaller than the outer diameter of the intermediate rod, the intermediate rod is sealingly matched with the inner wall of the communication channel, and the second end rod abuts against the valve core; the first end of the oil inlet channel is located at one end of the intermediate rod close to the first end rod, the first end of the oil injection channel is located at one end of the intermediate rod close to the first end rod when the valve core structure is in the first state, and the first end of the oil injection channel is blocked by the side wall of the intermediate rod when the valve core structure is in the second state.
[0009] In a further implementation form of the valve body, the valve body comprises a valve block and a screw block, the oil inlet channel, the air inlet channel, the oil injection channel, the air injection channel and the communication channel are located in the valve block respectively, and the screw block is located at one end of the communication channel.
[0010] In a further implementation form of the valve body, the one-way valve comprises a valve sleeve, an elastic member and the valve core, the valve sleeve is inserted into the communication channel, the first valve port is located on the side wall of the valve sleeve, and the second valve port is located at one end of the valve sleeve close to the screw block; the elastic member and the valve core are located in the valve sleeve, and the elastic member is located at one end of the valve core away from the screw block, and the two ends are respectively in abutment with the valve core and the valve sleeve.
[0011] In a further implementation form of the valve body, the valve sleeve comprises a screw sleeve and a limiting column, the limiting column is inserted into the screw sleeve and is threadedly connected with the screw sleeve, and the elastic member is sleeved on the limiting column and is in abutment with the limiting column.
[0012] In a further implementation form of the valve body, the inner wall of the valve sleeve has a first taper surface on the side facing the valve core, and the outer wall of the valve core has a second taper surface on the side facing the top rod; when the valve core structure is in the second state, the first taper surface and the second taper surface are in sealing abutment together.
[0013] In a further implementation form of the valve body, the injection structure comprises an injection seat and a nozzle; the nozzle is connected with the injection seat; the injection seat is connected with the valve body, the injection seat has a first injection channel and a second injection channel in the interior, two ends of the first injection channel are respectively in communication with the oil injection channel and the nozzle, and two ends of the second injection channel are respectively in communication with the air injection channel and the nozzle.
[0014] In a further implementation form of the valve body, the second injection channel is a plurality of second injection channels, and the plurality of second injection channels are arranged around the first injection channel.
[0015] In a further implementation form of the valve body, the first injection channel comprises a first sub-channel and a second sub-channel in communication with each other, the inner diameter of the first sub-channel is greater than the inner diameter of the second sub-channel, the first sub-channel is in communication with the oil injection channel, and the second sub-channel is in communication with the interior of the nozzle.
[0016] The technical scheme provided by the valve body has the following beneficial effects:
[0017] The injection valve provided by the embodiment of the present disclosure is applied to lubricating the gear in the rack and pinion lifting system. Since the injection valve has an oil inlet channel, an air inlet channel, an oil injection channel, an air injection channel and a communication channel inside the valve body, the lubricating grease can be introduced into the valve body through the oil inlet channel, and the compressed air can be introduced into the valve body through the air inlet channel. Since the valve core structure is movably located in the valve body, and the valve core structure has a first state and a second state, when the valve core structure is in the first state, the oil inlet channel is communicated with the oil injection channel through the communication channel, and the air inlet channel is communicated with the air injection channel through the communication channel, so that the lubricating grease can be sprayed out of the injection structure under the action of the compressed air to lubricate the gear. When the valve core structure is in the second state, the valve core structure separates the oil inlet channel from the oil injection channel, and the communication channel separates the air inlet channel from the air injection channel, so that the lubricating grease and the compressed air cannot be sprayed out of the injection structure.
[0018] That is, in the above injection valve, the position of the valve core structure in the valve body can be flexibly controlled according to whether the lubricating grease enters the oil inlet channel, so as to realize whether the lubricating grease is sprayed out of the valve body under the action of the compressed air. When the lubricating grease is input into the oil inlet channel, the valve core structure can be controlled to be in the first state, so that the lubricating grease can be smoothly sprayed out. When there is no lubricating grease input into the oil inlet channel, the valve core structure can be controlled to be in the second state, so that the lubricating grease cannot be sprayed out, and the compressed air sprayed out of the oil injection channel can be saved, thereby avoiding waste of the compressed air, improving the utilization rate of the compressed air, and avoiding the problem that the lubricating grease cannot be sprayed to the lubricating point due to insufficient compressed air pressure. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.
[0020] Figure 1 is a structural schematic view of the injection valve provided by the embodiment of the present disclosure;
[0021] Figure 2 is Figure 1 is a sectional view corresponding to the first state along the A-A direction in
[0022] Figure 3 is Figure 1 is a sectional view along the B-B direction in
[0023] Figure 4 is Figure 1 is a sectional view corresponding to the second state along the A-A direction in
[0024] Figure 5 A structural schematic diagram of a valve block provided by an embodiment of the present disclosure is shown in the figure.
[0025] Figure 6 A Figure 5 sectional view along the direction C-C.
[0026] Figure 7 A Figure 5 sectional view along the direction D-D.
[0027] Figure 8 A use scenario diagram of a spray valve provided by an embodiment of the present disclosure is shown in the figure.
[0028] Figure 9 A Figure 8 top view.
[0029] Figure 10 A Figure 9 sectional view along the direction E-E.
[0030] The meanings of the symbols in the figure are as follows:
[0031] 1, valve body; 11, valve block; 12, screw plug;
[0032] 2, valve core structure; 21, top rod; 211, first end rod; 212, middle rod; 213, second end rod; 22, one-way valve; 221, valve core; 2211, second taper surface; 222, valve sleeve; 2221, screw sleeve; 2222, limiting column; 2223, first taper surface; 223, elastic member;
[0033] 3, spray structure; 31, spray seat; 311, first spray channel; 3111, first sub-channel; 3112, second sub-channel; 312, second spray channel; 32, nozzle;
[0034] 101, oil inlet channel; 102, air inlet channel; 103, oil injection channel; 104, air injection channel; 105, communication channel;
[0035] 100, truss; 200, lifting motor; 300, rack. DETAILED DESCRIPTION
[0036] To make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings.
[0037] An embodiment of the present disclosure provides a spray valve, as shown in the figure. Figure 1 The spray valve includes a valve body 1, a valve core structure 2 and a spray structure 3.
[0038] Figure 2 isFigure 1 is a sectional view corresponding to the first state along the direction of A-A, Figure 3 is Figure 1 is a sectional view corresponding to the second state along the direction of B-B, Figure 4 is Figure 1 is a sectional view corresponding to the second state along the direction of A-A (wherein Figure 1 are sectional views corresponding to the directions of A-A and B-B after cutting along different thicknesses of the valve body 1), in combination with Figures 2-4 , the valve body 1 has an oil inlet channel 101, an air inlet channel 102, an oil injection channel 103, an air injection channel 104, and a communication channel 105 inside. The first end of the oil inlet channel 101, the first end of the air inlet channel 102, the first end of the oil injection channel 103, and the first end of the air injection channel 104 are respectively communicated with the communication channel 105, the second end of the oil inlet channel 101 is used to introduce the lubricating grease into the inside of the valve body 1, the second end of the air inlet channel 102 is used to introduce the compressed air into the inside of the valve body 1, the second end of the oil injection channel 103 is used to inject the lubricating grease, and the second end of the air injection channel 104 is used to inject the compressed air.
[0039] The valve core structure 2 is movably located in the communication channel 105, and the valve core structure 2 has a first state (see Figure 2 ) and a second state (see Figure 4 ). When the valve core structure 2 is in the first state, the communication channel 105 communicates the first end of the oil inlet channel 101 with the first end of the oil injection channel 103, and communicates the first end of the air inlet channel 102 with the first end of the air injection channel 104, and when the valve core structure 2 is in the second state, the valve core structure 2 separates the oil inlet channel 101 from the oil injection channel 103, and separates the air inlet channel 102 from the air injection channel 104.
[0040] The injection structure 3 is connected with the valve body 1, and is connected with the second end of the oil injection channel 103 and the second end of the air injection channel 104.
[0041] The injection valve provided by the embodiment of the present disclosure is applied to lubricate the gear in the rack and pinion lifting system. When the valve core structure 2 is in the first state, the oil inlet channel 101 is communicated with the oil injection channel 103 through the communication channel 105, and the air inlet channel 102 is communicated with the air injection channel 104 through the communication channel 105, so that the lubricating grease can be injected from the injection structure 3 under the action of the compressed air to lubricate the gear. When the valve core structure 2 is in the second state, the valve core structure 2 separates the oil inlet channel 101 from the oil injection channel 103, and separates the air inlet channel 102 from the air injection channel 104, so that the lubricating grease and the compressed air cannot be injected from the injection structure 3.
[0042] In other words, the position of the valve core structure 2 within the valve body 1 can be flexibly controlled based on whether grease enters the oil inlet channel 101, thereby controlling whether the grease is sprayed out of the valve body 1 under the action of compressed air. Specifically, when grease is input into the oil inlet channel 101, the valve core structure 2 can be controlled to be in the first state, allowing the grease to be sprayed out smoothly. When no grease is input into the oil inlet channel 101, the valve core structure 2 can be controlled to be in the second state, preventing the grease from being sprayed out. This also saves compressed air, avoids waste, improves compressed air utilization, and prevents the grease from failing to reach the lubrication points due to insufficient compressed air pressure.
[0043] For example, the connecting channel 105 is a straight channel that extends through the valve body 1. The oil inlet channel 101 and the air inlet channel 102 are located on the first side of the connecting channel 105, and the oil injection channel 103 and the air injection channel 104 are located on the second side of the connecting channel 105. The first side and the second side of the connecting channel 105 are opposite sides of the length direction of the connecting channel 105, respectively.
[0044] The above arrangement of oil passages can simplify the arrangement of oil inlet passage 101, air inlet passage 102, fuel injection passage 103, fuel jet passage 104 and connecting passage 105.
[0045] See also Figure 2 or Figure 4 Optionally, the valve core structure 2 includes a push rod 21 and a one-way valve 22. The one-way valve 22 is fixed in the communication channel 105. The first valve port of the one-way valve 22 is connected to the first end of the air intake channel 102, and the second valve port of the one-way valve 22 is connected to the first end of the jet channel 104. The push rod 21 is movably located in the communication channel 105, and one end of the push rod 21 abuts against the valve core 221 of the one-way valve. The push rod 21 is used to push the valve core 221 when the pressure in the oil intake channel 101 is greater than a preset value, so that the first valve port and the second valve port of the one-way valve 22 are connected. When the pressure in the oil intake channel 101 is less than the preset value, the one-way valve 22 is closed.
[0046] In the above implementation, when the pressure in the oil inlet channel 101 is greater than the preset value, the push rod 21 will move towards the valve core 221 of the one-way valve 22 under the action of oil pressure, and even push the valve core 221, thereby making the first valve port and the second valve port of the one-way valve 22 connected, so that the oil inlet channel 101 is connected to the fuel injection channel 103 and the air intake channel 102 is connected to the jet injection channel 104. When the pressure in the oil inlet channel 101 is less than the preset value, the one-way valve 22 is closed, so that the oil inlet channel 101 is not connected to the fuel injection channel 103 and the air intake channel 102 is not connected to the jet injection channel 104.
[0047] For example, when the second end of the oil inlet channel 101 is inputted with lubricating grease in actual use, the pressure of the lubricating grease in the oil inlet channel 101 is increased, and accordingly, the lubricating grease enters the communication channel 105, the lubricating grease pushes the top rod 21 to move towards the valve core 221, so that the first end of the top rod 21 has a gap with the inner wall of the valve body 1, and the lubricating grease can enter the oil injection channel 103 along the gap (see Figure 4 ). At the same time, the top rod 21 pushes the valve core 221 to move when moving, and after the valve core 221 moves, the first valve port and the second valve port of the one-way valve 22 are communicated, and the compressed air also enters the communication channel 105 from the second end of the air inlet channel 102, and then enters the air injection channel 104 from the first valve port and the second valve port of the one-way valve 22, and the lubricating grease is smoothly sprayed out of the valve body 1 under the action of the compressed air to lubricate the gear.
[0048] On the contrary, when the second end of the oil inlet channel 101 is not inputted with lubricating grease or the pressure of the lubricating grease is low (lower than the preset value) (see Figure 2 ), the pressure of the lubricating grease in the oil inlet channel 101 is low, and accordingly, the lubricating grease will not enter the communication channel 105, and the lubricating grease will not push the top rod 21 to move towards the valve core 221, and the communication channel 105 cuts off the communication between the oil inlet channel 101 and the oil injection channel 103. At the same time, the first valve port and the second valve port in the one-way valve 22 are not communicated, the one-way valve 22 is cut off, the one-way valve 22 cuts off the communication between the air inlet channel 102 and the air injection channel 104, and the compressed air cannot be sprayed out of the communication channel 105, that is, the problem that the compressed air is still sprayed out of the valve body 1 when there is no lubricating grease sprayed out is avoided, and the use of compressed air is saved.
[0049] Optionally, the top rod 21 comprises a first end rod 211, an intermediate rod 212 and a second end rod 213 connected in sequence, the outer diameter of the first end rod 211 and the outer diameter of the second end rod 213 are both smaller than the outer diameter of the intermediate rod 212, the intermediate rod 212 is in sealing fit with the inner wall of the communication channel 105, and the second end rod 213 abuts against the valve core 221.
[0050] The first end of the oil inlet channel 101 is located at one end of the intermediate rod 212 close to the first end rod 211, the first end of the oil injection channel 103 is located at one end of the intermediate rod 212 close to the first end rod 211 when the valve core structure 2 is in the first state, and the first end of the oil injection channel 103 is blocked by the side wall of the intermediate rod 212 when the valve core structure 2 is in the second state.
[0051] In the above implementation, the top rod 21 is provided as the first end rod 211, the middle rod 212 and the second end rod 213, so that the stepped surface can be formed by the different outer diameters between the first end rod 211 and the middle rod 212, and then when the lubricating grease enters the valve body 1 from the oil inlet channel 101 and enters the communication channel 105, the lubricating grease can quickly act on the stepped surface to push the top rod 21 to move. At the same time, the outer diameter of the second end rod 213 is smaller than that of the middle rod 212, so that the gap between the top rod 21 and the communication channel 105 is larger, and the compressed air can flow quickly.
[0052] That is, the above structure of the top rod 21 can quickly push the top rod 21 to move towards the valve core 221, and facilitate the flow of compressed air in the communication channel 105.
[0053] Figure 5 The structure schematic diagram of the valve block provided by the embodiment of the present disclosure, Figure 6 For Figure 5 the cross-sectional view along the C-C direction, Figure 7 For Figure 5 the cross-sectional view along the D-D direction, in combination Figures 5-7 The valve block 11 is a cuboid block structure, and the oil inlet channel 101, the air inlet channel 102, the oil injection channel 103, the air injection channel 104 and the communication channel 105 are located inside the valve block 11.
[0054] The screw plug 12 is located at one end of the communication channel 105, and the screw plug 12 is in contact with the first end rod 211 when the valve core structure 2 is in the first state.
[0055] In the above implementation, the valve body 1 is provided as the valve block 11 and the screw plug 12, so that the valve block 11 can provide a mounting basis for the oil inlet channel 101, the air inlet channel 102, the oil injection channel 103, the air injection channel 104 and the communication channel 105 and other components, and the screw plug 12 can block one end of the communication channel 105.
[0056] Again referring to Figures 2-4 Optionally, the one-way valve 22 includes a valve sleeve 222, an elastic member 223 and a valve core 221. The valve sleeve 222 is inserted in the communication channel 105, the first valve port is located on the side wall of the valve sleeve 222, and the second valve port is located at one end of the valve sleeve 222 close to the screw plug 12. The elastic member 223 and the valve core 221 are located in the valve sleeve 222, and the elastic member 223 is located at one end of the valve core 221 away from the screw plug 12, and the two ends are respectively in contact with the valve core 221 and the valve sleeve 222.
[0057] In the above implementation, the valve sleeve 222 is used to provide a mounting base for the valve core 221 and the elastic member 223, and can cooperate with the valve core 221 to enable the communication passage 105 to communicate the air inlet passage 102 with the air injection passage 104 when the valve core structure 2 is in the first state, and to isolate the air inlet passage 102 from the air injection passage 104 when the valve core structure 2 is in the second state.
[0058] The elastic member 223 is used to reset the valve core 221, i.e., the valve core 221 can be reset when not subjected to the pushing force of the top rod 21, so as to make the first valve port and the second valve port on the valve sleeve 222 not communicate.
[0059] For example, in order to improve the sealing between the valve sleeve 222 and the valve block 11, when the valve sleeve 222 is threadedly connected with the valve block 11, two sealing rings are arranged along the axial direction of the valve sleeve 222, and the two sealing rings are respectively located on opposite sides of the first valve port.
[0060] Optionally, the valve sleeve 222 comprises a screw sleeve 2221 and a limiting column 2222, the limiting column 2222 is inserted into the screw sleeve 2221 and is threadedly connected with the screw sleeve 2221. The elastic member 223 is sleeved on the limiting column 2222, and the elastic member 223 abuts against the limiting column 2222.
[0061] In the above implementation, the valve sleeve 222 is provided as the screw sleeve 2221 and the limiting column 2222, the limiting column 2222 can provide a mounting base for the elastic member 223, so as to enable the elastic member 223 to be firmly assembled, and the screw sleeve 2221 can provide a mounting base for the valve core 221, and cooperate with the valve core 221, so that the valve core structure 2 has two states.
[0062] In addition, in order to improve the sealing between the limiting column 2222 and the screw sleeve 2221, a sealing ring is arranged between the limiting column 2222 and the screw sleeve 2221.
[0063] For example, the limiting column 2222 is threadedly inserted into the screw sleeve 2221, so as to facilitate the disassembly and assembly of the limiting column 2222 on the valve body 1.
[0064] Optionally, the inner wall of the valve sleeve 222 towards the valve core 221 has a first taper surface 2223, and the outer wall of the valve core 221 towards the top rod 21 has a second taper surface 2211. When the valve core structure 2 is in the second state, the first taper surface 2223 and the second taper surface 2211 are sealingly fitted together.
[0065] In the above implementation manner, the cooperation of the first conical surface 2223 and the second conical surface 2211 can effectively improve the sealing between the valve core 221 and the screw sleeve 2221, and thus when the valve core structure 2 is in the second state, the communication passage 105 can effectively cut off the communication between the intake passage 102 and the oil injection passage 103.
[0066] Optionally, the limiting column 2222 is a rod-shaped structure with a circular truncated cone structure, the circular truncated cone structure of the limiting column 2222 is threadedly connected with the screw sleeve 2221, the rod-shaped structure of the limiting column 2222 is located in the screw sleeve 2221, and the elastic member 223 is sleeved on the rod-shaped structure of the limiting column 2222.
[0067] In the above implementation manner, the limiting column 2222 is arranged in the above structure, so that the step surface of the circular truncated cone structure can be pre-positioned and clamped with the screw sleeve 2221, and meanwhile, the rod-shaped structure of the limiting column 2222 can provide a mounting basis for the elastic member 223.
[0068] Optionally, the injection structure 3 comprises an injection seat 31 and a nozzle 32. The nozzle 32 is connected with the injection seat 31. The injection seat 31 is connected with the valve body 1, and the inside of the injection seat 31 has a first injection passage 311 and a second injection passage 312. The two ends of the first injection passage 311 are respectively in communication with the oil injection passage 103 and the nozzle 32, and the two ends of the second injection passage 312 are respectively in communication with the air injection passage 104 and the nozzle 32.
[0069] In the above implementation manner, the injection structure 3 is arranged as the injection seat 31 and the nozzle 32, so that the injection seat 31 can be connected with the valve body 1 to provide a mounting basis for the nozzle 32, and meanwhile, the nozzle 32 can be in communication with the oil injection passage 103 to inject the lubricating grease in the oil injection passage 103 from the inside of the valve body 1 to lubricate the gear and the like. The first injection passage 311 is used to introduce the lubricating grease from the oil injection passage 103 into the nozzle 32, and the second injection passage 312 is used to introduce the compressed air from the air injection passage 104 into the nozzle 32.
[0070] Illustratively, the injection seat 31 is fixed on the valve body 1 by means of screws, so that the injection seat 31 can be conveniently integrated with the valve body 1.
[0071] Optionally, the second injection passage 312 is a plurality of second injection passages 312, and the plurality of second injection passages 312 are arranged around the first injection passage 311.
[0072] In the above implementation manner, the plurality of second injection passages 312 are arranged in a circumferential direction around the first injection passage 311 at the outer periphery of the first injection passage 311, so that when the compressed air enters the nozzle 32, the compressed air can be arranged around the lubricating grease, thereby facilitating the injection of the lubricating grease.
[0073] Again referring toFigure 3 Or Figure 7 For example, in order to facilitate the communication between the second injection channel 312 and the jet channel 104, an annular groove is arranged on the outer wall of the valve body 1, the annular groove is in communication with the jet channel 104, and the second injection channel 312 is in communication with the annular groove.
[0074] In addition, in order to improve the sealing between the injection seat 31 and the valve body 1, a gasket is arranged at the connection between the injection seat 31 and the valve body 1. The gasket is arranged in the annular groove.
[0075] For example, the nozzle 32 is connected to the injection seat 31 through a locking nut and a gasket. When installed, the gasket is clamped between the nozzle 32 and the injection seat 31, and the locking nut is screwed onto the outside of the nozzle 32 and the injection seat 31. In this way, the nozzle 32 can be easily and detachably installed on the injection seat 31.
[0076] Again referring to Figure 2 Optionally, the first injection channel 311 includes a first sub-channel 3111 and a second sub-channel 3112 in communication with each other, the inner diameter of the first sub-channel 3111 is larger than that of the second sub-channel 3112, the first sub-channel 3111 is in communication with the oil injection channel 103, and the second sub-channel 3112 is in communication with the inside of the nozzle 32.
[0077] In the above implementation, the first injection channel 311 is provided as the first sub-channel 3111 and the second sub-channel 3112, and the different inner diameters of the first sub-channel 3111 and the second sub-channel 3112 can increase the flow rate of the lubricating grease when flowing from the first sub-channel 3111 to the second sub-channel 3112 due to the decrease in the inner diameter, thereby enabling the lubricating grease to be quickly sprayed out of the nozzle 32.
[0078] Figure 8 The use scenario diagram of the injection valve provided by the embodiment of the present disclosure is combined with Figure 8 The above injection valve is used for lubricating the gear in the lifting system. The lifting system includes a truss 100, a lifting motor 200, a rack 300, and the like.
[0079] Figure 9 For Figure 8 The top view is combined with Figure 9 The truss 100 is a triangular truss, and a pair of racks 300 is connected at each vertex of the triangular truss. Each of the racks 300 in each pair is in meshing communication with a gear of a lifting motor 200.
[0080] Figure 10 For Figure 9 The sectional view in the E-E direction is combined with Figure 10The injection valve is connected to the truss 100, and is arranged in one-to-one correspondence with the lifting motor 200, and is located on one side of the corresponding lifting motor 200, and is used for lubricating the gear of the lifting motor.
[0081] The above only describes optional embodiments of the present disclosure, and is not used to limit the present disclosure, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.
Claims
1. A jet valve, characterized in that, The injection valve includes a valve body (1), a valve core structure (2), and an injection structure (3). The valve body (1) has a connecting channel (105), an oil inlet channel (101), an air inlet channel (102), an oil injection channel (103), and an air jet channel (104). The first end of the oil inlet channel (101), the first end of the air inlet channel (102), the first end of the oil injection channel (103), and the first end of the air jet channel (104) are respectively connected to the connecting channel (105). The second end of the oil inlet channel (101) is used to introduce grease into the interior of the valve body (1). The second end of the air inlet channel (102) is used to introduce compressed air into the interior of the valve body (1). The second end of the oil injection channel (103) is used to spray out grease. The second end of the air jet channel (104) is used to spray out compressed air. The valve core structure (2) is movably located within the communication channel (105), and the valve core structure (2) has a first state and a second state. The valve core structure (2) includes a push rod (21) and a one-way valve (22). The one-way valve (22) is fixed within the communication channel (105). The first valve port of the one-way valve (22) is connected to the first end of the air intake channel (102), and the second valve port of the one-way valve (22) is connected to the first end of the jet channel (104). The push rod (21) is movably located within the communication channel (105). The first valve port of the one-way valve (22) is connected to the first end of the jet channel (104). 1) Movably located within the connecting channel (105), the top rod (21) includes a first end rod (211), an intermediate rod (212), and a second end rod (213) connected in sequence. The outer diameters of the first end rod (211) and the second end rod (213) are both smaller than the outer diameter of the intermediate rod (212). The intermediate rod (212) is sealed to the inner wall of the connecting channel (105), and the second end rod (213) abuts against the valve core (221) of the one-way valve (22). When the valve core structure (2) is in the first state, the first end of the injection channel (103) is located at the end of the intermediate rod (212) near the first end rod (211), the first valve port and the second valve port of the one-way valve (22) are connected, the connecting channel (105) connects the oil inlet channel (101) and the first end of the injection channel (103), and connects the first end of the air intake channel (102) and the first end of the jet channel (104); when the valve core structure (2) is in the second state, the first end of the injection channel (103) is blocked by the side wall of the intermediate rod (212), the one-way valve (22) is closed, the valve core structure (2) isolates the oil inlet channel (101) and the injection channel (103), and isolates the air intake channel (102) and the jet channel (104); The push rod (21) is used to push the valve core (221) to move when the pressure in the oil inlet channel (101) is greater than a preset value; The injection structure (3) is connected to the valve body (1) and to the second end of the oil injection channel (103) and the second end of the jet channel (104).
2. The injection valve according to claim 1, characterized in that, The valve body (1) includes a valve block (11) and a screw plug (12). The oil inlet channel (101), the air inlet channel (102), the fuel injection channel (103), the fuel jet channel (104), and the connecting channel (105) are respectively located inside the valve block (11). The plug (12) is located at one end of the communication channel (105). When the valve core structure (2) is in the first state, the plug (12) is in contact with the first end rod (211).
3. The injection valve according to claim 2, characterized in that, The one-way valve (22) includes a valve sleeve (222), an elastic element (223), and the valve core (221); The valve sleeve (222) is inserted into the communication channel (105), the first valve port is located on the side wall of the valve sleeve (222), and the second valve port is located at the end of the valve sleeve (222) near the screw plug (12); The elastic element (223) and the valve core (221) are located inside the valve sleeve (222), and the elastic element (223) is located at the end of the valve core (221) away from the screw plug (12), with both ends abutting against the valve core (221) and the valve sleeve (222) respectively.
4. The injection valve according to claim 3, characterized in that, The valve sleeve (222) includes a threaded sleeve (2221) and a limiting post (2222). The limiting post (2222) is inserted into the threaded sleeve (2221) and threadedly connected to the threaded sleeve (2221), and the elastic element (223) is sleeved on the limiting post (2222), and the elastic element (223) abuts against the limiting post (2222).
5. The injection valve according to claim 4, characterized in that, The inner wall of the valve sleeve (222) facing the valve core (221) has a first conical surface (2223), and the outer wall of the valve core (221) facing the push rod (21) has a second conical surface (2211). When the valve core structure (2) is in the second state, the first conical surface (2223) and the second conical surface (2211) are sealed together.
6. The injection valve according to any one of claims 1-5, characterized in that, The spray structure (3) includes a spray seat (31) and a nozzle (32); The nozzle (32) is connected to the injection seat (31); The injection seat (31) is connected to the valve body (1). The injection seat (31) has a first injection channel (311) and a second injection channel (312) inside. The two ends of the first injection channel (311) are respectively connected to the oil injection channel (103) and the nozzle (32). The two ends of the second injection channel (312) are respectively connected to the air jet channel (104) and the nozzle (32).
7. The injection valve according to claim 6, characterized in that, There are multiple second injection channels (312), and the multiple second injection channels (312) are arranged around the first injection channel (311).
8. The injection valve according to claim 6, characterized in that, The first injection channel (311) includes a first sub-channel (3111) and a second sub-channel (3112) that are interconnected. The inner diameter of the first sub-channel (3111) is larger than the inner diameter of the second sub-channel (3112). The first sub-channel (3111) is connected to the oil injection channel (103), and the second sub-channel (3112) is connected to the interior of the nozzle (32).
Citation Information
Patent Citations
Spraying device with liquid flow adjusting function
CN209953084U
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