Fuel switching device of domestic dual-fuel liquefied gas forklift

Abstract

The utility model provides a kind of fuel switching device of domestic dual-fuel liquefied gas forklift, comprising: switcher, electromagnetic valve, connecting pipe and sealing mechanism, electromagnetic valve is arranged at the bottom of switcher;Connecting pipe is connected with the outer wall of electromagnetic valve respectively;Sealing mechanism includes first fixed plate, clamping plate, fixed shell, second fixed plate and sealing ring, first fixed plate is arranged in the inner wall of connecting pipe;Clamping plate is installed in the inner wall of first fixed plate;Fixed shell is arranged on the outer wall of clamping plate;Second fixed plate is sleeved on the outer wall of fixed shell;Sealing ring is respectively sleeved on the outer wall of first fixed plate and second fixed plate.The utility model embodiment of a kind of fuel switching device of domestic dual-fuel liquefied gas forklift, can be realized the efficient switching of liquefied gas and fuel oil by the collaborative work of sealing mechanism and switching component, while ensuring the sealing property of connecting place and the security of operation.

Description

Technical Field

[0001] This utility model relates to the technical field of forklifts, and in particular to a fuel switching device for a domestically produced dual-fuel liquefied gas forklift. Background Technology

[0002] Forklifts are industrial material handling vehicles, referring to various wheeled handling vehicles used for loading, unloading, stacking, and short-distance transportation of palletized goods. They are commonly used for transporting large items in warehouses and are typically powered by gasoline engines or batteries. In modern industry, with increasing environmental awareness and adjustments to the energy structure, many forklifts are equipped with fuel switching devices that allow them to switch between gasoline and liquefied petroleum gas (LPG).

[0003] When using a fuel switching device to switch between fuel oil and liquefied petroleum gas, traditional fuel switching devices use solenoid valves to control the flow and cut off of fuel. However, this can lead to inflexible switching and fuel leakage at the connection point after prolonged use. This affects the efficiency of the forklift and also causes some pollution to the environment. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0005] Therefore, one objective of this utility model is to propose a fuel switching device for a domestically produced dual-fuel liquefied gas forklift, which can achieve efficient switching between liquefied gas and fuel oil through the coordinated work of the sealing mechanism and the switching components, while ensuring the sealing of the connection and the safety of operation.

[0006] To achieve the above objectives, the first aspect of this utility model proposes a fuel switching device for a domestically produced dual-fuel liquefied gas forklift, comprising: a switcher, a solenoid valve, a connecting pipe, and a sealing mechanism. The solenoid valve is disposed at the bottom of the switcher; the connecting pipe is connected to the outer wall of the solenoid valve; the sealing mechanism includes a first fixing plate, a clamping plate, a fixing shell, a second fixing plate, and sealing rings. The first fixing plate is disposed on the inner wall of the connecting pipe; the clamping plate is installed on the inner wall of the first fixing plate; the fixing shell is disposed on the outer wall of the clamping plate; the second fixing plate is sleeved on the outer wall of the fixing shell; and the sealing rings are sleeved on the outer walls of the first and second fixing plates, respectively.

[0007] In addition, the fuel switching device for a domestically produced dual-fuel liquefied gas forklift proposed in this utility model may also have the following additional technical features: Specifically, a fixing ring is fitted onto the outer wall of the second fixing plate.

[0008] Specifically, bolts are provided on the outer wall of the card plate, and the bolts pass through the card plate and are threadedly connected to the first fixing plate.

[0009] Specifically, the connecting pipe is equipped with a switching assembly, which includes a fixing bolt, a gasket, a fixing block, a flow limiting plate, and a ball core. The fixing bolt is located on the inner wall of the connecting pipe. The fixing block is connected to the fixing bolt. The flow limiting plate is connected to the fixing block. The ball core is located on the outer wall of the flow limiting plate.

[0010] Specifically, a gasket is provided on the outer wall of the fixing bolt.

[0011] Specifically, a display screen is installed on the outer wall of the switcher.

[0012] Specifically, a control valve is installed at one end of the connecting pipe.

[0013] Specifically, a preheating pipe is installed on the outer wall of the control valve.

[0014] Compared with the prior art, this utility model has the following beneficial effects: This fuel switching device for a domestic dual-fuel liquefied gas forklift achieves efficient switching between liquefied gas and fuel oil through the coordinated work of a solenoid valve, connecting pipe, sealing mechanism and switching components, while ensuring the sealing of the connection and the safety of operation.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the fuel switching device structure of a domestically produced dual-fuel liquefied gas forklift according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the sealing mechanism of a fuel switching device for a domestically produced dual-fuel liquefied gas forklift according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the sealing mechanism and connecting pipe of a fuel switching device for a domestically produced dual-fuel liquefied gas forklift according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the fuel switching device switching component of a domestically produced dual-fuel liquefied gas forklift according to an embodiment of the present invention.

[0017] Reference numerals: 1. Switcher; 2. Solenoid valve; 3. Connecting pipe; 4. Sealing mechanism; 41. First fixing plate; 42. Clamping plate; 43. Fixing shell; 44. Bolt; 45. Second fixing plate; 46. Sealing ring; 47. Fixing ring; 5. Switching assembly; 51. Fixing bolt; 52. Gasket; 53. Fixing block; 54. Flow limiting plate; 55. Ball core; 6. Display screen; 7. Control valve; 8. Preheating pipe. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] The following description, with reference to the accompanying drawings, describes a fuel switching device for a domestically produced dual-fuel liquefied gas forklift according to an embodiment of the present invention.

[0020] like Figures 1-4 As shown in the figure, a fuel switching device for a domestic dual-fuel liquefied gas forklift according to an embodiment of the present invention includes: a switcher 1, a solenoid valve 2, a connecting pipe 3, and a sealing mechanism 4.

[0021] Solenoid valve 2 is located at the bottom of switcher 1, and connecting pipe 3 is connected to the outer wall of solenoid valve 2. Sealing mechanism 4 includes first fixing plate 41, clamping plate 42, fixing shell 43, second fixing plate 45 and sealing ring 46.

[0022] The first fixing plate 41 is disposed on the inner wall of the connecting pipe 3, the clamping plate 42 is installed on the inner wall of the first fixing plate 41, the fixing shell 43 is disposed on the outer wall of the clamping plate 42, the second fixing plate 45 is sleeved on the outer wall of the fixing shell 43, and the sealing ring 46 is respectively sleeved on the outer walls of the first fixing plate 41 and the second fixing plate 45.

[0023] A fixing ring 47 is fitted on the outer wall of the second fixing plate 45.

[0024] Bolts 44 are provided on the outer wall of the card plate 42. The bolts 44 pass through the card plate 42 and are threadedly connected to the first fixing plate 41.

[0025] Specifically, when the switcher 1 switches the forklift between LPG and fuel via the solenoid valve 2, the connecting pipe 3 acts as a bridge connecting the solenoid valve 2 and the forklift's fuel system. The sealing mechanism 4 ensures that no fuel leakage occurs at the connection point during the switching process. The first fixing plate 41 and the second fixing plate 45 are tightly fitted together by the sealing ring 46, effectively preventing fuel leakage. The fixing ring 47 further enhances the stability of the second fixing plate 45, preventing it from loosening during long-term use. The design of the bolt 44 not only simplifies the installation process but also ensures a firm connection between the clamping plate 42 and the first fixing plate 41, improving the durability and safety of the entire fuel switching device.

[0026] In one embodiment of this application, such as Figure 3 and Figure 4 As shown, a switching component 5 is installed inside the connecting pipe 3.

[0027] The switching assembly 5 includes a fixing bolt 51, a gasket 52, a fixing block 53, a flow limiting plate 54, and a ball core 55. The fixing bolt 51 is disposed on the inner wall of the connecting pipe 3, the fixing block 53 is connected to the fixing bolt 51, the flow limiting plate 54 is connected to the fixing block 53, and the ball core 55 is disposed on the outer wall of the flow limiting plate 54.

[0028] Specifically, during switching, the ball core 55 rotates under the guidance of the flow restrictor 54, thereby controlling the fuel flow path. The retaining bolt 51 and retaining block 53 ensure the stable installation of the switching assembly 5 within the connecting pipe 3, while the gasket 52 further improves the sealing of the connection, preventing fuel leakage.

[0029] In one embodiment of this application, such as Figure 3 and Figure 4 As shown, a gasket 52 is provided on the outer wall of the fixing bolt 51.

[0030] Understandably, gasket 52 is made of corrosion-resistant and high-temperature-resistant rubber to ensure that it will not fail due to fuel corrosion or high-temperature environments during long-term use.

[0031] In one embodiment of this application, such as Figure 1 As shown, a display screen 6 is installed on the outer wall of the switcher 1.

[0032] Understandably, display screen 6 can display the working status of the fuel switching device in real time, including the current fuel type, remaining fuel amount, and any potential fault warnings, thereby facilitating operators to monitor and manage the forklift's fuel usage.

[0033] In one embodiment of this application, such as Figure 1 As shown, a control valve 7 is installed at one end of the connecting pipe 3.

[0034] Understandably, the design of control valve 7 allows operators to manually control the flow of fuel, ensuring that the fuel supply can be quickly cut off in an emergency, thus improving the safety of forklift operation.

[0035] In one embodiment of this application, such as Figure 1 As shown, a preheating pipe 8 is provided on the outer wall of the control valve 7.

[0036] Understandably, the preheating pipe 8 is designed to preheat the fuel in a low-temperature environment, ensuring smooth fuel flow and preventing fuel solidification or poor flow due to excessively low temperatures.

[0037] Working Principle: When the forklift needs to switch fuels, the operator can issue a command through the operating interface of the switcher 1. After receiving the command, the switcher 1 adjusts the flow direction of liquefied petroleum gas or fuel oil in the connecting pipe 3 through the solenoid valve 2. During this process, the sealing ring 46 and fixing ring 47 in the sealing mechanism 4 ensure no fuel leakage at the connection, ensuring operational safety and environmental protection. The switching component 5 plays an important role in the fuel switching process. The ball core 55 rotates under the guidance of the flow restrictor 54, precisely controlling the fuel flow direction. The fixing bolt 51, fixing block 53, and gasket 52 together ensure the stable installation and good sealing of the switching component 5 in the connecting pipe 3. In addition, the display screen 6 displays the operating status of the fuel switching device in real time, including the current fuel type, remaining fuel quantity, and potential fault warnings. The operator can perform timely maintenance and management of the forklift based on the information provided by the display screen 6 to ensure its normal operation. In an emergency, the operator can manually cut off the fuel supply through the control valve 7. The design of the preheating pipe 8 can preheat the fuel in low-temperature environments, ensuring smooth fuel flow and avoiding fuel solidification or flow obstruction caused by low temperatures.

[0038] In summary, the fuel switching device for a domestically produced dual-fuel liquefied gas forklift in this embodiment of the present invention achieves efficient switching between liquefied gas and fuel oil through the coordinated operation of the solenoid valve 2, connecting pipe 3, sealing mechanism 4 and switching component 5, while ensuring the sealing of the connection and the safety of operation.

[0039] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fuel switching device for a domestically produced dual-fuel liquefied gas forklift, characterized in that, include: The device comprises a switch (1), a solenoid valve (2), a connecting pipe (3), and a sealing mechanism (4). The solenoid valve (2) is located at the bottom of the switch (1). The connecting pipe (3) is connected to the outer wall of the solenoid valve (2). The sealing mechanism (4) includes a first fixing plate (41), a clamping plate (42), a fixing shell (43), a second fixing plate (45), and a sealing ring (46). The first fixing plate (41) is located on the inner wall of the connecting pipe (3). The clamping plate (42) is installed on the inner wall of the first fixing plate (41). The fixing shell (43) is located on the outer wall of the clamping plate (42). The second fixing plate (45) is sleeved on the outer wall of the fixing shell (43). The sealing ring (46) is sleeved on the outer walls of the first fixing plate (41) and the second fixing plate (45).

2. The fuel switching device for a domestically produced dual-fuel liquefied gas forklift according to claim 1, characterized in that, A fixing ring (47) is fitted on the outer wall of the second fixing plate (45).

3. The fuel switching device for a domestically produced dual-fuel liquefied gas forklift according to claim 1, characterized in that, Bolts (44) are provided on the outer wall of the card plate (42), and the bolts (44) pass through the card plate (42) and are threadedly connected to the first fixing plate (41).

4. The fuel switching device for a domestically produced dual-fuel liquefied gas forklift according to claim 1, characterized in that, The connecting pipe (3) is equipped with a switching component (5); The switching assembly (5) includes a fixing bolt (51), a gasket (52), a fixing block (53), a flow limiting plate (54), and a ball core (55); the fixing bolt (51) is disposed on the inner wall of the connecting pipe (3); the fixing block (53) is connected to the fixing bolt (51); the flow limiting plate (54) is connected to the fixing block (53); and the ball core (55) is disposed on the outer wall of the flow limiting plate (54).

5. The fuel switching device for a domestically produced dual-fuel liquefied gas forklift according to claim 4, characterized in that, A gasket (52) is provided on the outer wall of the fixing bolt (51).

6. The fuel switching device for a domestically produced dual-fuel liquefied gas forklift according to claim 1, characterized in that, The outer wall of the switch (1) is provided with a display screen (6).

7. The fuel switching device for a domestically produced dual-fuel liquefied gas forklift according to claim 1, characterized in that, A control valve (7) is provided at one end of the connecting pipe (3).

8. The fuel switching device for a domestically produced dual-fuel liquefied gas forklift according to claim 7, characterized in that, A preheating pipe (8) is provided on the outer wall of the control valve (7).

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