Liquid fuel gasification furnace with automatic anti-blocking device

Abstract

The utility model discloses a liquid fuel gasification furnace with an automatic anti-blocking device. A nozzle assembly is mounted on a mounting seat; an oil injection cavity is formed around the nozzle assembly and connected with an oil inlet pipe and a pressure relief pipe; a nozzle opening is formed in the top of the oil injection cavity, and the needle valve is telescopically installed on the nozzle assembly. A spring piece is arranged below the needle valve; the spring piece is installed below the oil injection cavity, and the top end of the needle valve can be inserted into the nozzle opening. When liquid fuel is fed into the oil injection cavity, the spring piece can deform downwards through liquid pressure, and the needle valve moves downwards to be separated from the nozzle opening. According to the utility model, the dynamic pressure self-adaptive regulation and control of the on-off of the nozzle are realized through the synergistic effect of the needle valve and the spring piece. In the oil supply stage, fuel hydraulically drives the reed to deform, so that the needle valve is separated from the nozzle opening to form an atomization channel, and sufficient atomization combustion of the fuel is ensured; hydraulic pressure disappears during shutdown and fuel cut-off, the reed elastically resets to push the needle valve to precisely close the nozzle opening, and a physical isolation barrier is formed.

Description

Technical Field

[0001] This utility model relates to the field of liquid fuel burner technology, and in particular to a liquid fuel gasification furnace with an automatic anti-clogging device. Background Technology

[0002] Traditional liquid fuel combustion devices achieve fuel combustion based on atomization injection technology. The core principle is to atomize liquid fuel into micron-sized particles through a high-pressure nozzle, which are then ignited by an ignition system to form a diffuse flame. However, this technology has significant inherent drawbacks in practical applications: when the burner enters the shutdown phase, the rapid drop in the combustion chamber temperature gradient causes unburned atomized fuel to quickly condense and liquefy. This phase change process produces a double negative impact.

[0003] Firstly, residual fuel forms larger droplets at low temperatures, creating white smoke containing unburned hydrocarbons in the combustion chamber, resulting in residual smoke emissions. Secondly, condensed fuel can cause secondary deposits at the nozzle throat and burner guide grooves, leading to blockages that require periodic unblocking and maintenance using physical probes. Therefore, further improvements are needed. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a liquid fuel gasifier with an automatic anti-clogging device.

[0005] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a liquid fuel gasifier with an automatic anti-blocking device, including: a mounting base, a nozzle assembly, a spring plate and a needle valve;

[0006] The nozzle assembly is mounted on the mounting base; the nozzle assembly surrounds an injection chamber, which is connected to an inlet pipe and a pressure relief pipe; a nozzle orifice is provided at the top of the injection chamber, and the needle valve is retractably mounted on the nozzle assembly; a spring plate is mounted below the needle valve; the spring plate is mounted below the injection chamber, allowing the tip of the needle valve to be inserted into the nozzle orifice; when liquid fuel is fed into the injection chamber, the liquid pressure causes the spring plate to deform downwards, and the needle valve to move downwards and disengage from the nozzle orifice.

[0007] Optionally, the nozzle assembly includes a nozzle head, a nozzle seat, and a nozzle cap; the nozzle seat is mounted on the mounting base, the nozzle head is mounted on the top of the nozzle seat, and the nozzle cap is detachably mounted on the bottom of the nozzle seat; the nozzle orifice is opened in the nozzle head, and the spring plate is mounted on the nozzle seat.

[0008] Optionally, an annular step is provided below the nozzle seat, and the nozzle cap presses the spring sheet onto the annular step.

[0009] Optionally, the annular step is provided with a heat-insulating copper ring.

[0010] Optionally, a retaining block is provided below the needle valve, and the retaining block can be embedded in the spring sheet.

[0011] Optionally, an adjusting bolt is provided below the spring sheet; when the spring sheet is deformed downwards, the locking block of the needle valve can abut against the adjusting bolt.

[0012] Optionally, the injection chamber is provided with a filter membrane, and the needle valve passes through the filter membrane.

[0013] Optionally, the mounting base is equipped with an electric heating element for heating the oil inlet pipe.

[0014] Optionally, the heating element is a heating rod, and the oil inlet pipe is provided with a winding section; the winding section is wound around the outside of the heating rod.

[0015] The beneficial effects of this invention are as follows: Dynamic pressure adaptive control of nozzle on / off states is achieved through the synergistic action of the needle valve and the spring plate. During the fuel supply phase, the fuel hydraulic pressure drives the spring plate to deform, causing the needle valve to disengage from the nozzle orifice to form an atomization channel, ensuring complete fuel atomization and combustion. When the fuel supply is cut off during shutdown, the hydraulic pressure disappears, and the spring plate elastically resets, pushing the needle valve to precisely close the nozzle orifice, forming a physical isolation barrier. This effectively prevents the generation of residual smoke and achieves anti-clogging and unblocking effects, significantly reducing maintenance frequency.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of the liquid fuel gasification furnace of this utility model;

[0019] Figure 2 for Figure 1 Another schematic diagram of a liquid fuel gasification furnace.

[0020] Explanation of key component symbols:

[0021] 10. Mounting base; 11. Heating element; 20. Nozzle assembly; 21. Injection chamber; 22. Nozzle port; 23. Nozzle head; 24. Nozzle seat; 241. Annular step; 25. Nozzle cap; 26. Insulating copper ring; 30. Spring plate; 40. Needle valve; 41. Clamping block; 50. Oil inlet pipe; 51. Winding section; 60. Pressure relief pipe; 70. Adjusting bolt; 80. Filter membrane. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Example

[0027] Reference Figure 1 and Figure 2 The present invention proposes a liquid fuel gasifier with an automatic anti-clogging device, comprising: a mounting base 10, a nozzle assembly 20, a spring plate 30, and a needle valve 40;

[0028] Nozzle assembly 20 is mounted on mounting base 10; nozzle assembly 20 is surrounded by injection chamber 21, injection chamber 21 is connected to oil inlet pipe 50 and pressure relief pipe 60; nozzle port 22 is provided at the top of injection chamber 21, needle valve 40 is telescopically mounted on nozzle assembly 20; spring plate 30 is mounted below needle valve 40; spring plate 30 is mounted below injection chamber 21, allowing the top of needle valve 40 to be inserted into nozzle port 22; when liquid fuel is delivered into injection chamber 21, liquid pressure can deform spring plate 30 downwards and cause needle valve 40 to move downwards and disengage from nozzle port 22.

[0029] In this invention, the dynamic pressure adaptive control of the nozzle opening and closing is achieved through the synergistic action of the needle valve 40 and the spring plate 30. During the fuel supply phase, the fuel hydraulic pressure drives the spring plate to deform, causing the needle valve 40 to disengage from the nozzle orifice 22 to form an atomization channel, ensuring complete fuel atomization and combustion. When the machine stops and the fuel supply is cut off, the hydraulic pressure disappears, and the spring plate elastically resets, pushing the needle valve 40 to precisely close the nozzle orifice 22, forming a physical isolation barrier. This effectively prevents the generation of residual smoke and achieves the effect of preventing blockage and clearing blockages, significantly reducing the maintenance frequency.

[0030] In this embodiment, the nozzle assembly 20 includes a nozzle head 23, a nozzle seat 24, and a nozzle cap 25. The nozzle seat 24 is mounted on the mounting base 10, the nozzle head 23 is mounted on the top of the nozzle seat 24, and the nozzle cap 25 is detachably mounted on the bottom of the nozzle seat 24. The nozzle orifice 22 is formed in the nozzle head 23, and the spring plate 30 is mounted on the nozzle seat 24. The modular nozzle assembly 20 adopts a three-stage assembly structure. The separate design of the nozzle head 23 and the nozzle seat 24 allows the core atomizing components to be replaced independently, reducing maintenance costs. The detachable feature of the nozzle cap 25 facilitates deep cleaning of the inside of the fuel injection chamber 21.

[0031] Specifically, an annular step 241 is provided below the nozzle seat 24, and the nozzle cap 25 presses the spring plate 30 onto the annular step 241. The pressing structure between the annular step 241 and the spring plate 30 forms an axial limiting constraint, ensuring stable working deformation of the spring plate 30. Combined with the preload adjustment function of the nozzle cap 25, this ensures the accuracy of the needle valve 40's reset stroke repetition.

[0032] Furthermore, the annular step 241 is equipped with a heat-insulating copper ring 26. The innovative design of the integrated heat-insulating copper ring 26 reduces the operating temperature gradient of the spring plate 30, effectively preventing heat transfer from the nozzle 23 assembly to the spring plate 30, and ensuring the stable operation of the spring plate 30.

[0033] In this embodiment, a locking block 41 is provided below the needle valve 40, and the locking block 41 can be embedded in the spring plate 30. The embedded connection structure of the locking block 41 realizes the mechanical interlock between the needle valve 40 and the spring plate 30, and can withstand the vibration environment without disengaging.

[0034] In this embodiment, an adjusting bolt 70 is provided below the spring plate 30; when the spring plate 30 is deformed downwards, the locking block 41 of the needle valve 40 can abut against the adjusting bolt 70. The adjusting bolt 70 forms a mechanical limiting device for the deformation of the spring plate 30, and the opening stroke of the needle valve 40 can be precisely controlled within the range of 0.5-3mm through threaded fine adjustment.

[0035] In this embodiment, in order to improve the cleanliness of the liquid fuel delivered to the injection chamber 21, the injection chamber 21 is provided with a filter membrane 80, and the needle valve 40 passes through the filter membrane 80.

[0036] In this embodiment, the mounting base 10 is equipped with an electric heating element 11 for heating the fuel inlet pipe 50. The electric heating element 11 can heat and atomize the liquid fuel before sending it into the fuel injection chamber 21.

[0037] In this embodiment, the heating element 11 is a heating rod, and the oil inlet pipe 50 is provided with a winding section 51; the winding section 51 is wound around the outside of the heating rod. The spiral winding heating structure improves the uniformity of heating of the fuel pipeline.

[0038] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A liquid fuel gasification furnace having an automatic anti-clogging device, characterized by, include: Mounting base (10), nozzle assembly (20), spring plate (30) and needle valve (40); The nozzle assembly (20) is mounted on the mounting base (10); the nozzle assembly (20) surrounds the injection chamber (21), the injection chamber (21) is connected to the inlet pipe (50) and the pressure relief pipe (60); the top of the injection chamber (21) is provided with a nozzle port (22), and the needle valve (40) is telescopically mounted on the nozzle assembly (20); the spring plate (30) is mounted below the needle valve (40); the spring plate (30) is mounted below the injection chamber (21), so that the top of the needle valve (40) can be inserted into the nozzle port (22); when liquid fuel is fed into the injection chamber (21), the liquid pressure can deform the spring plate (30) downward and move the needle valve (40) downward away from the nozzle port (22).

2. The liquid fuel gasifier with automatic anti-blocking device according to claim 1, characterized in that: The nozzle assembly (20) includes a nozzle (23), a nozzle seat (24), and a nozzle cap (25); the nozzle seat (24) is mounted on the mounting base (10), the nozzle (23) is mounted on the top of the nozzle seat (24), and the nozzle cap (25) is detachably mounted on the bottom of the nozzle seat (24); the nozzle opening (22) is opened in the nozzle (23), and the spring plate (30) is mounted on the nozzle seat (24).

3. The liquid fuel gasifier with automatic anti-blocking device according to claim 2, characterized in that: An annular step (241) is provided below the nozzle seat (24), and the nozzle cap (25) presses the spring sheet (30) onto the annular step (241).

4. The liquid fuel gasifier with automatic anti-blocking device according to claim 3, characterized in that: The annular step (241) is provided with a heat-insulating copper ring (26).

5. The liquid fuel gasifier with automatic anti-blocking device according to claim 1, characterized in that: A locking block (41) is provided below the needle valve (40), and the locking block (41) can be embedded in the spring sheet (30).

6. The liquid fuel gasifier with automatic anti-blocking device according to claim 5, characterized in that: An adjusting bolt (70) is provided below the spring sheet (30); when the spring sheet (30) is deformed downwards, the locking block (41) of the needle valve (40) can abut against the adjusting bolt (70).

7. The liquid fuel gasifier with automatic anti-blocking device according to claim 1, characterized in that: The oil injection chamber (21) is provided with a filter membrane (80), and the needle valve (40) passes through the filter membrane (80).

8. The liquid fuel gasifier with automatic anti-blocking device according to claim 1, characterized in that: The mounting base (10) is equipped with an electric heating element (11) for heating the oil inlet pipe (50).

9. The liquid fuel gasifier with automatic anti-blocking device according to claim 8, characterized in that: The heating element (11) is a heating rod, and the oil inlet pipe (50) is provided with a winding section (51); the winding section (51) is wound around the outside of the heating rod.

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