Pulse fuel injection equipment with premixing structure

Abstract

This utility model relates to the field of oil injection equipment technology, specifically a pulse oil injection device with a premixing structure. It includes a pulse oil injector, a premixing component at the input end of the pulse oil injector, a mixing cylinder containing a mixing element for mixing lubricating oil and air, an oil inlet pipe with a valve near the top of the mixing cylinder, a cover connected to the top flange of the mixing cylinder, an air inlet pipe with a valve in the middle of the top of the cover, and a compression pipe at the bottom of the mixing cylinder, which is connected to the pulse oil injector via a small-diameter connecting pipe. This pulse oil injection device with a premixing structure, through the design of the mixing cylinder and mixing element in the premixing component, utilizes the rotation of the fan blades driven by compressed air to drive the stirring rod, significantly improving the uniformity of the mixing of lubricating oil and air, and avoiding the problem of uneven oil mist distribution caused by insufficient mixing in traditional equipment.

Description

Technical Field

[0001] This utility model relates to the field of fuel injection equipment technology, specifically to a pulse fuel injection equipment with a premixed structure. Background Technology

[0002] Machine tools are essential mechanical equipment used for metal cutting, forming, machining, and assembly, playing a crucial role in modern manufacturing. With continuous industrial development, machine tools are becoming increasingly complex in function and expanding in application, encompassing multiple fields such as automotive, aerospace, and mold making. These machine tools operate in high-precision, high-speed environments, placing higher demands on their performance and stability. Therefore, machine tool lubrication has become a vital technology for ensuring their normal operation and extending their service life. Effective lubrication reduces friction, lowers temperature, and protects machine tool components, thereby improving machining quality and production efficiency.

[0003] Pulse-jet oil injection systems have gradually become the mainstream solution for machine tool lubrication due to their ability to deliver quantitative and timed oil injections according to actual needs. This type of equipment injects lubricating oil into friction parts in a pulse-jet manner, accurately controlling the amount of oil injected each time, thus achieving efficient lubrication. However, despite the advantages of existing pulse-jet oil injection systems in machine tool lubrication, some shortcomings still exist in practical applications, especially regarding the mixing effect during the oil injection process.

[0004] Current pulse-type oil injection equipment typically lacks a premixing structure, resulting in insufficient mixing of lubricating oil and gas (such as compressed air), which may lead to uneven oil mist and thus affect lubrication performance. Therefore, we propose a pulse-type oil injection equipment with a premixing structure to achieve more efficient and uniform oil-air mixing, thereby meeting the high-precision and high-efficiency lubrication requirements of machine tools. Utility Model Content

[0005] The purpose of this invention is to provide a pulse-type fuel injection device with a premixed structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pulse-type oil injection device with a premixing structure, including a pulse injector, is used to spray atomized lubricating oil onto the friction parts of a machine tool in a pulse manner, combined with... Figure 1 and Figure 3 As shown, the input end of the pulse injector is equipped with a premixing component for mixing lubricating oil and compressed air. The premixing component includes a mixing cylinder, which serves as a mixing container for lubricating oil and air. The mixing cylinder is equipped with a mixing element for mixing lubricating oil and air, and the mixing uniformity is improved by mechanical stirring.

[0008] like Figure 4As shown, the mixing component includes a cross-shaped first bracket and a cross-shaped second bracket. The cross-shaped first bracket is used to fix the top position of the rotating rod, and the cross-shaped second bracket is used to fix the bottom position of the rotating rod. A rotating rod is rotatably connected between the cross-shaped first bracket and the cross-shaped second bracket. The rotating rod drives the stirring rod to work by rotating. The top of the rotating rod passes through the bottom of the cross-shaped first bracket and is coaxially connected to a fan blade. It is driven to rotate by compressed air, thereby driving the rotating rod to rotate. The outer wall of the rotating rod is provided with multiple stirring rods to enhance the mixing effect of lubricating oil and air.

[0009] like Figure 3 As shown, the mixing cylinder has an oil inlet pipe with a valve near the top on its outer wall for controlling the amount of lubricating oil input. The top flange of the mixing cylinder is connected to a cover for sealing the mixing cylinder and connecting to an air inlet pipe. The top center of the cover has an air inlet pipe with a valve for inputting compressed air and driving the fan blades to rotate. The bottom of the mixing cylinder has a compression pipe for temporarily storing the mixed oil-air mixture. The compression pipe is connected to a pulse injector through a small-diameter connecting pipe for delivering the mixture to the pulse injector.

[0010] Preferred, such as Figure 4 As shown, the inner wall of the mixing cylinder and near the bottom are provided with four U-shaped support blocks arranged in a circular array. The four ends of the cross-shaped second bracket are respectively located in the four U-shaped support blocks, which are used to fix the ends of the cross-shaped second bracket and fix the position of the cross-shaped second bracket.

[0011] Preferred, such as Figure 5 As shown, the top of the cross-shaped first bracket and near the four ends are provided with positioning grooves to cooperate with positioning rods to limit the displacement of the mixture. The bottom of the cover is provided with four positioning rods arranged in a circular array. The bottom ends of the four positioning rods are respectively inserted into the four positioning grooves to fix the mixture.

[0012] Bearings are provided at the connection points of the rotating rod with the first cross-shaped bracket and the second cross-shaped bracket to reduce the rotational resistance of the rotating rod. The air intake pipe is located directly above the fan blade to ensure that the airflow directly impacts the fan blade to drive the rotation.

[0013] Preferred, combined Figure 6 and Figure 7 As shown, the top of the mixing cylinder has a first annular groove, and the bottom of the cover has a second annular groove. A sealing ring is provided between the first annular groove and the second annular groove to prevent oil and gas leakage during the mixing process.

[0014] Preferred, such as Figure 2As shown, the output end of the small-diameter connecting pipe is threadedly connected to the input end of the pulse injector to ensure a tight connection and facilitate disassembly and maintenance.

[0015] The outer wall of the mixing cylinder is provided with four reinforcing brackets arranged in a circular array. The bottom ends of the four reinforcing brackets are connected to a limiting ring. The limiting ring is sleeved on the outside of the pulse injector input end to enhance the connection strength between the premixing component and the pulse injector.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This pulse-type oil injection device with premixing structure, through the design of the mixing cylinder and mixing component in the premixing component, utilizes the fan blades to rotate under the drive of compressed air, driving the stirring rod to form agitation, which significantly improves the uniformity of mixing between lubricating oil and air, and avoids the problem of uneven oil mist distribution caused by insufficient mixing in traditional equipment.

[0018] 2. This pulse-type oil injection device with a premixed structure regulates the lubricating oil input through the valve in the oil inlet pipe, combined with the compressed air flow control in the air inlet pipe, and with the timed and quantitative injection function of the pulse-type oil injector, to achieve precise matching of micro-lubrication and reduce lubricating oil waste.

[0019] 3. The pulse-type oil injection device with premixing structure has a U-shaped support block inside the mixing cylinder that works with the cross-shaped second bracket to fix the mixing component. The positioning pressure rod at the bottom of the cover is inserted into the positioning groove of the cross-shaped first bracket to limit the movement, ensuring stable operation of the mixing component during high-speed rotation. The sealing ring is designed to work with the annular groove of the mixing cylinder and the cover to effectively prevent oil and gas leakage. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the assembly structure of the pulse injector and premixing component in this utility model.

[0022] Figure 3 This is a cross-sectional structural diagram of the premixed component in this utility model;

[0023] Figure 4 This is a cross-sectional structural diagram of the mixing cylinder in this utility model;

[0024] Figure 5 This is a schematic diagram of the hybrid component structure in this utility model;

[0025] Figure 6 This is a schematic diagram of the assembly structure of the mixing cylinder and sealing ring in this utility model;

[0026] Figure 7This is a schematic diagram of the assembly structure of the lid and sealing ring in this utility model;

[0027] In the diagram: 100, pulse injector; 200, premixing component; 210, mixing cylinder; 211, fuel inlet pipe; 212, U-shaped support block; 213, first annular groove; 220, compression pipe; 221, small-diameter connecting pipe; 230, mixing component; 231, cross-shaped first bracket; 2311, positioning groove; 232, cross-shaped second bracket; 233, rotating rod; 234, fan blade; 235, stirring rod; 240, cover; 241, air inlet pipe; 242, positioning pressure rod; 243, second annular groove; 250, sealing ring; 260, reinforcing bracket; 270, limiting ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Please see Figures 1-7 This utility model provides a technical solution:

[0031] A pulse-type oil injection device with a premixing structure, including a pulse injector 100, is used to spray atomized lubricating oil onto the friction parts of a machine tool in a pulse manner, combined with... Figure 1 and Figure 3 As shown, the input end of the pulse injector 100 is provided with a premixing component 200 for mixing lubricating oil and compressed air. The premixing component 200 includes a mixing cylinder 210, which serves as a mixing container for lubricating oil and air. The mixing cylinder 210 is provided with a mixing element 230 for mixing lubricating oil and air, and the mixing uniformity is improved by mechanical stirring.

[0032] like Figure 4As shown, the mixing component 230 includes a cross-shaped first bracket 231 and a cross-shaped second bracket 232. The cross-shaped first bracket 231 is used to fix the top position of the rotating rod 233, and the cross-shaped second bracket 232 is used to fix the bottom position of the rotating rod 233. The rotating rod 233 is rotatably connected between the cross-shaped first bracket 231 and the cross-shaped second bracket 232. The rotating rod 233 drives the stirring rod 235 to work by rotating. The top of the rotating rod 233 passes through the bottom of the cross-shaped first bracket 231 and is coaxially connected to a fan blade 234. It is driven to rotate by compressed air, thereby driving the rotating rod 233 to rotate. The outer wall of the rotating rod 233 is provided with multiple stirring rods 235 to enhance the mixing effect of lubricating oil and air.

[0033] like Figure 3 As shown, the mixing cylinder 210 has an oil inlet pipe 211 with a valve on its outer wall near the top, which is connected to an external lubricating oil supply device to control the amount of lubricating oil input. The top flange of the mixing cylinder 210 is connected to a cover 240 to seal the mixing cylinder 210 and connect to an air inlet pipe 241. The middle of the top of the cover 240 has an air inlet pipe 241 with a valve, which is connected to an external compressed air supply device to input compressed air and drive the fan blades 234 to rotate. The bottom of the mixing cylinder 210 has a compression pipe 220 to temporarily store the mixed oil-air mixture. The compression pipe 220 is connected to the pulse injector 100 through a small-diameter connecting pipe 221 to transport the mixture to the pulse injector 100.

[0034] In this embodiment, as Figure 4 As shown, the inner wall of the mixing cylinder 210 and near the bottom are provided with four U-shaped support blocks 212 arranged in a circular array. The four ends of the cross-shaped second bracket 232 are respectively located in the four U-shaped support blocks 212, which are used to fix the ends of the cross-shaped second bracket 232 and fix the position of the cross-shaped second bracket 232.

[0035] Specifically, such as Figure 5 As shown, the top of the cross-shaped first bracket 231 and near the four ends are provided with positioning grooves 2311, which are used to cooperate with the positioning pressure rods 242 to limit the displacement of the mixture 230. The bottom of the cover 240 is provided with four positioning pressure rods 242 arranged in a circular array. The bottom ends of the four positioning pressure rods 242 are respectively inserted into the four positioning grooves 2311 to fix the mixture 230.

[0036] Bearings are provided at the connection points of the rotating rod 233 with the cross-shaped first bracket 231 and the cross-shaped second bracket 232 to reduce the rotational resistance of the rotating rod 233. The air intake pipe 241 is located directly above the fan blade 234 to ensure that the airflow directly impacts the fan blade 234 to drive its rotation.

[0037] Furthermore, in combination Figure 6 and Figure 7As shown, the top of the mixing cylinder 210 is provided with a first annular groove 213, and the bottom of the cover 240 is provided with a second annular groove 243. A sealing ring 250 is provided between the first annular groove 213 and the second annular groove 243 to prevent oil and gas leakage during the mixing process.

[0038] Furthermore, such as Figure 2 As shown, the output end of the small-diameter connecting pipe 221 is threadedly connected to the input end of the pulse injector 100 to ensure a tight connection and facilitate disassembly and maintenance.

[0039] The outer wall of the mixing cylinder 210 is provided with four reinforcing brackets 260 arranged in a ring array. The bottom ends of the four reinforcing brackets 260 are connected to a limiting ring 270. The limiting ring 270 is sleeved on the outside of the input end of the pulse injector 100 to enhance the connection strength between the premixing component 200 and the pulse injector 100.

[0040] In this embodiment, the pulse-type oil injection device with a premixed structure is used by connecting the lubricating oil supply device to the oil inlet pipe 211 on the outer wall of the mixing cylinder 210 via a pipeline, and simultaneously connecting the compressed air supply device to the air inlet pipe 241 on the top of the cover 240. After starting the air compressor, the compressed air enters the interior of the mixing cylinder 210 through the air inlet pipe 241. The airflow directly impacts the fan blades 234 in the mixing component 230, driving the fan blades 234 to rotate the rotating rod 233. At this time, multiple stirring rods 235 on the outer wall of the rotating rod 233 rotate synchronously, mechanically stirring the lubricating oil input from the oil inlet pipe 211. After the lubricating oil and compressed air are mixed by the stirring rods 235 in the mixing cylinder 210, a uniform oil-air mixture is formed. The mixture is temporarily stored in the compression pipe 220 at the bottom of the mixing cylinder 210, and then transported to the pulse injector 100 through the small-diameter connecting pipe 221. The pulse injector 100 accurately sprays the atomized lubricating oil to the friction parts of the machine tool in a pulse manner according to the preset program. The U-shaped support block 212 on the inner wall of the mixing cylinder 210 fixes the cross-shaped second bracket 232, and the positioning pressure rod 242 at the bottom of the cover 240 is inserted into the positioning groove 2311 of the cross-shaped first bracket 231 to ensure that the mixing component 230 remains stable during high-speed rotation. The sealing ring 250 cooperates with the first annular groove 213 at the top of the mixing cylinder 210 and the second annular groove 243 at the bottom of the cover 240 to prevent oil and gas leakage during the mixing process.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pulse-type fuel injection device with a premixed structure, comprising a pulse-type fuel injector (100), characterized in that: The pulse injector (100) has a premixing assembly (200) at its input end. The premixing assembly (200) includes a mixing cylinder (210). The mixing cylinder (210) contains a mixing component (230) for mixing lubricating oil and air. The mixing component (230) includes a cross-shaped first support (231) and a cross-shaped second support (232). A rotating rod (233) is rotatably connected between the cross-shaped first support (231) and the cross-shaped second support (232). The top end of the rotating rod (233) passes through the bottom of the cross-shaped first support (231). The mixing cylinder (210) is coaxially connected to a fan blade (234). The outer wall of the rotating rod (233) is provided with multiple stirring rods (235). The outer wall of the mixing cylinder (210) and near the top are provided with an oil inlet pipe (211) with a valve. The top flange of the mixing cylinder (210) is connected to a cover (240). The middle of the top of the cover (240) is provided with an air inlet pipe (241) with a valve. The bottom of the mixing cylinder (210) is provided with a compression pipe (220). The compression pipe (220) is connected to the pulse injector (100) through a small-diameter connecting pipe (221).

2. The pulse-type fuel injection device with premixed structure according to claim 1, characterized in that: The mixing cylinder (210) has four U-shaped support blocks (212) arranged in a circular array on its inner wall and near the bottom. The four ends of the cross-shaped second bracket (232) are located in the four U-shaped support blocks (212).

3. The pulse-type fuel injection device with premixed structure according to claim 1, characterized in that: The top of the cross-shaped first bracket (231) and near the four ends are provided with positioning grooves (2311). The bottom of the cover (240) is provided with four positioning rods (242) arranged in a circular array. The bottom ends of the four positioning rods (242) are respectively inserted into the four positioning grooves (2311).

4. The pulse-type fuel injection device with premixed structure according to claim 1, characterized in that: The rotating rod (233) is provided with bearings at the connection points with the cross-shaped first bracket (231) and the cross-shaped second bracket (232), and the air inlet pipe (241) is located directly above the fan blade (234).

5. The pulse-type fuel injection device with premixed structure according to claim 1, characterized in that: The top of the mixing cylinder (210) is provided with a first annular groove (213), and the bottom of the cover (240) is provided with a second annular groove (243). A sealing ring (250) is provided between the first annular groove (213) and the second annular groove (243).

6. The pulse-type fuel injection device with premixed structure according to claim 1, characterized in that: The output end of the small-diameter connecting pipe (221) is threadedly connected to the input end of the pulse injector (100).

7. The pulse-type fuel injection device with premixed structure according to claim 1, characterized in that: The outer wall of the mixing cylinder (210) is provided with four reinforcing brackets (260) arranged in a ring array. The bottom ends of the four reinforcing brackets (260) are connected to a limiting ring (270), which is sleeved on the outside of the input end of the pulse injector (100).

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