A fuel mixer

Abstract

The utility model relates to a kind of fuel oil mixers. Outer pipe is used to communicate with the oil outlet pipe of gasoline storage tank;Inner tube is coaxially arranged in outer pipe, and is communicated with the liquid outlet pipe of ethanol storage tank by elbow pipe that passes through outer pipe radially, a plurality of small holes are provided on the outer circumferential surface of inner tube, the front end of inner tube has main outlet, and main outlet is set along the fluid flow direction in outer pipe;There are multiple shaftless helical blades, which are fixed in outer pipe at intervals, and inner tube is located between two adjacent shaftless helical blades;During operation, gasoline introduced into outer pipe forms spiral pipe flow after passing through shaftless helical blade, and negative pressure is formed at the center of spiral pipe flow to suck ethanol in inner tube to compensate pressure difference. Without increasing new power, vortex flow is formed by helical blade, and negative pressure generated at the center of vortex flow is used to suck ethanol to balance the flow difference caused by pressure difference, so that online full and efficient mixing of gasoline and ethanol is completed.

Description

Technical Field

[0001] This utility model relates to a fuel mixer. Background Technology

[0002] Blending ethanol with gasoline is a "balancing act" in the energy transition, alleviating the oil crisis through biomass resources while significantly reducing exhaust pollution. Ethanol and gasoline are typically mixed in a 1:10 ratio. Before mixing, ethanol and gasoline are stored separately in their respective tanks. Generally, the component oil (gasoline) and ethanol are mixed and loaded onto vehicles simultaneously via a feeder system, which operates on a metered, constant-speed basis. The pressure in the component oil's outlet pipe is higher than the pressure in the ethanol's pipeline. However, due to limitations in the feeder system's inherent pipe diameter and pump head, the ethanol flow rate cannot be increased. During the simultaneous dispensing of component oil and ethanol, the ethanol flow rate is suppressed by the component oil (the actual flow rate is 1:43 ethanol to gasoline mass ratio), making it impossible to complete loading simultaneously. Ethanol usually lags behind the component oil, resulting in uneven mixing after loading. The bottom of the vehicle is often filled with ethanol, and the loading speed is slow, frequently causing pump stoppages due to insufficient ethanol flow. Utility Model Content

[0003] The purpose of this invention is to provide a fuel mixer that can, without adding new power, form a vortex through spiral blades and use the negative pressure generated at the center of the vortex to draw in ethanol to balance the flow difference caused by the pressure difference, thereby completing the full and efficient mixing of gasoline and ethanol online.

[0004] The technical solution of this utility model is as follows: The fuel mixer includes: The outer pipe is used to connect to the oil outlet pipe of the gasoline storage tank; The inner tube is coaxially installed inside the outer tube and is connected to the outlet pipe of the ethanol storage tank through a bend that extends radially out of the outer tube. Multiple small holes are provided on the outer circumference of the inner tube, and the front end of the inner tube has a main outlet, which is set in the direction of fluid flow in the outer tube. There are multiple shaftless helical blades, which are fixed at intervals inside the outer tube, and the inner tube is located between two adjacent shaftless helical blades. During operation, gasoline introduced through the outer pipe passes through the shaftless spiral blades to form a spiral flow. The negative pressure formed at the center of the spiral flow draws ethanol from the inner pipe to compensate for the pressure difference.

[0005] Based on the above scheme, a further improvement is made as follows: the main outlet is an inclined outlet formed by obliquely cutting the end of the inner tube to increase the outlet cross-sectional area. This allows the negative pressure generated by the spiral flow to more effectively draw ethanol out of the inner tube.

[0006] Based on the above scheme, the following improvements are made: connecting flanges are provided at the outer end of the bend and at both ends of the outer pipe.

[0007] Based on the above scheme, the following improvements are made: the outer edge of the shaftless helical blade is welded and fixed to the inner surface of the outer tube.

[0008] The beneficial effects of this technical solution are as follows: When the fuel mixer is in use, high-pressure gasoline enters the outer pipe from the gasoline storage tank through the outlet pipe. It is then guided by multiple spiral blades to form a spiral flow. Since the pressure is lowest at the center of the spiral flow, a negative pressure can be formed in the closed environment of the outer pipe to draw in the ethanol in the inner pipe located at the center. This forms pressure compensation in the inner pipe, promoting the smooth entry of the ethanol in the inner pipe into the outer pipe to complete the mixing. There is no need to add a pressurizing device to the outlet pipe of the original ethanol storage tank to pressurize the ethanol. Moreover, due to the setting of the shaftless spiral blades, it can also make the ethanol and gasoline mix more evenly. In conjunction with the multiple radial holes set on the outer circumference of the inner pipe, a radial ethanol jet is generated, which can mix more evenly with the gasoline. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the internal structure of a specific embodiment of the fuel mixer of this utility model; In the diagram: 1-outer pipe, 11-left connecting flange, 12-right connecting flange, 2-inner pipe, 21-small hole, 22-main outlet, 3-bend, 31-bend connecting flange, 4-shaftless helical blade. Detailed Implementation

[0010] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0011] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0012] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0013] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0014] A specific embodiment of the fuel mixer of this utility model is as follows: Figure 1 As shown, the fuel mixer includes an outer pipe 1, an inner pipe 2, and shaftless helical blades 4. The outer pipe 1 is used to connect to the outlet pipe of the gasoline storage tank; the inner pipe 2 is coaxially arranged inside the outer pipe 1 and is connected to the outlet pipe of the ethanol storage tank through a bend 3 that radially exits the outer pipe 1. Multiple small holes 21 are provided on the outer circumference of the inner pipe 2, and the front end of the inner pipe 2 has a main outlet 22, which is arranged in the direction of fluid flow in the outer pipe 1; there are multiple shaftless helical blades 4, which are fixed at intervals inside the outer pipe 1, and the inner pipe 2 is located between two adjacent shaftless helical blades 4; during operation, the gasoline introduced into the outer pipe 1 forms a helical flow after passing through the shaftless helical blades 4, and the negative pressure formed at the center of the helical flow draws ethanol from the inner pipe 2 to compensate for the pressure difference.

[0015] The main outlet 22 is an inclined outlet formed by cutting the end of the inner tube 2 at an angle to increase the outlet cross-sectional area. This allows the negative pressure generated by the spiral flow to more effectively draw ethanol out of the inner tube 2. Connecting flanges are provided at the outer end of the bend 3 and at both ends of the outer tube 1 (i.e., the left connecting flange 11, the right connecting flange 12, and the bend connecting flange 31 of the outer tube). The outer edge of the shaftless spiral blade 4 is welded and fixed to the inner surface of the outer tube 1.

[0016] When the fuel mixer is in use, high-pressure gasoline enters the outer pipe 1 from the gasoline tank through the outlet pipe. It is guided by multiple spiral blades to form a spiral flow. Since the pressure is lowest at the center of the spiral flow, a negative pressure can be formed in the closed environment of the outer pipe 1 to draw in the ethanol in the inner pipe 2 located at the center. This forms pressure compensation in the inner pipe 2, which promotes the smooth entry of the ethanol in the inner pipe 2 into the outer pipe 1 to complete the mixing. There is no need to add a pressurizing device to the outlet pipe of the original ethanol tank to pressurize the ethanol. Moreover, due to the setting of the shaftless spiral blades 4, it can also make the ethanol and gasoline mix more evenly. In conjunction with the multiple radial holes 21 set on the outer circumference of the inner pipe 2, a radial ethanol jet is generated, which can mix more evenly with the gasoline.

[0017] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A fuel mixer, characterized in that, include: The outer pipe is used to connect to the oil outlet pipe of the gasoline storage tank; The inner tube is coaxially installed inside the outer tube and is connected to the outlet pipe of the ethanol storage tank through a bend that extends radially out of the outer tube. Multiple small holes are provided on the outer circumference of the inner tube, and the front end of the inner tube has a main outlet, which is set in the direction of fluid flow in the outer tube. There are multiple shaftless helical blades, which are fixed at intervals inside the outer tube, and the inner tube is located between two adjacent shaftless helical blades. During operation, gasoline introduced through the outer pipe passes through the shaftless spiral blades to form a spiral flow. The negative pressure formed at the center of the spiral flow draws ethanol from the inner pipe to compensate for the pressure difference.

2. The fuel mixer according to claim 1, characterized in that, The main outlet is an inclined outlet formed by obliquely cutting the end of the inner tube to increase the outlet cross-sectional area.

3. A fuel mixer according to claim 1, characterized in that, The outer end of the bend and both ends of the outer pipe are equipped with connecting flanges.

4. A fuel mixer according to claim 1, characterized in that, The outer edge of the shaftless helical blade is welded and fixed to the inner surface of the outer tube.

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