Differential pressure gauge for diesel locomotive filter

Abstract

The differential pressure gauge for the diesel locomotive filter comprises a gauge body, and a dial plate is arranged at the top of the gauge body; the sensing unit is arranged in a first cavity in the meter body and comprises a sensor, the output end of the sensor is connected with a magnet, the output end of the sensor is fixedly connected with an elastic piece, and the elastic piece is arranged in a second cavity in the meter body; the pointer unit comprises a rotating shaft and a pointer fixed on the rotating shaft, and the pointer is used for rotating above the dial plate; the rotating shaft is fixed with an armature inside the meter body, and the armature is used for generating coupling with the magnet. According to the differential pressure gauge for the diesel locomotive filter, the sensor is adopted to collect the pressure difference in the two different cavities, the magnet fixed to the output end of the sensor generates linear displacement, then the magnet and the armature fixed to the pointer unit generate coupling, rotation of the pointer is achieved, accurate display of the pressure is achieved, and the accuracy of the pressure display is improved. The defect that a gear mechanism adopted by an existing pressure gauge is low in precision is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to the differential pressure gauge for filter of diesel locomotive belongs to filter technical field. BACKGROUND

[0002] The existing diesel locomotive usually uses diesel engine as the core power source, converts chemical energy into mechanical energy through the combustion of fuel in the cylinder to provide power for the locomotive. The diesel engine includes a fuel system and an oil system, the former is used to provide sufficient and stable fuel, and the latter is used for lubrication, cooling, cleaning and sealing to improve the service life of the diesel engine. Both of them use filters and remove impurities in diesel and oil, and the specific oil filtering way is to block impurities through the small pore size of the filter core, but the continuous accumulation of impurities will cause the blockage of the filter core, resulting in insufficient flow capacity, so it is necessary to replace the filter core regularly. The replacement criterion can use the differential pressure gauge added to the high-low pressure interface before and after the filter to detect the pressure difference before and after the filter, and when the replacement range value reaches the established value, it is replaced.

[0003] But the differential pressure gauge used in the existing filter also has certain degree of deficiency, for example, the numerical display and deflection way thereof is based on the displacement generated by the elastic element through the pressure difference, and then drives the gear transmission mechanism to amplify, so that the pointer deflects. But due to the time, intensity, environment and other factors, the deflection accuracy of the pointer is reduced, which affects the accuracy of the pressure difference. UTILITY MODEL CONTENT

[0004] Therefore, the purpose of the utility model is to provide a differential pressure gauge for filter of diesel locomotive to improve the accuracy of the differential pressure gauge display.

[0005] In order to achieve the above purpose, the utility model provides a differential pressure gauge for filter of diesel locomotive, which comprises:

[0006] The table body is provided with a dial at the top;

[0007] The sensing unit is provided in the first cavity in the table body, and comprises a sensor, the output end of the sensor is connected with a magnet, the output end of the sensor is fixedly connected with an elastic element, and the elastic element is arranged in the second cavity in the table body;

[0008] The pointer unit comprises a shaft and a pointer fixed to the shaft, and the pointer is used for rotating above the dial; the shaft is fixed with an armature in the table body, and the armature is used for coupling with the magnet.

[0009] Further, the dial is provided with a warning area.

[0010] Further, the first cavity and the second cavity are separated by a protection groove.

[0011] The protective groove is fixedly connected to the watch body and the watch face.

[0012] Furthermore, the bottom of the meter body is provided with a high-voltage interface and a low-voltage interface; the high-voltage interface is connected to the first cavity, and the low-voltage interface is connected to the second cavity.

[0013] Furthermore, the elastic element is a spring.

[0014] By adopting the above technical solution, the differential pressure gauge for internal combustion engine filters provided in this utility model embodiment uses a sensor to collect the pressure difference between two different chambers, causing the magnet fixed at the sensor output end to produce a linear displacement, thereby coupling the magnet with the armature fixed at the pointer unit, and thus realizing the rotation of the gauge needle, thereby achieving accurate display of pressure, avoiding the shortcomings of the low accuracy of the gear mechanism used in existing pressure gauges. Attached Figure Description

[0015] Fig. 1 A front view of the differential pressure gauge for an internal combustion locomotive filter provided by this utility model;

[0016] Fig. 2 A bottom view of the differential pressure gauge for the internal combustion locomotive filter provided by this utility model;

[0017] Fig. 3 A side view of the differential pressure gauge for the internal combustion locomotive filter provided by this utility model.

[0018] In the diagram: 1. Watch body; 2. Watch face; 3. Sensing unit; 4. First cavity; 5. Sensor; 6. Magnet; 7. Elastic element; 8. Second cavity; 9. Pointer unit; 10. Rotating shaft; 11. Hand; 12. Armature; 13. Protective groove; 14. High voltage interface; 15. Low voltage interface. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The filter element in the filter used in existing internal combustion locomotives needs to be replaced regularly to ensure the effective flow of engine oil and / or fuel. The replacement is mainly based on the differential pressure collected by the differential pressure gauge at the high and low ports of the filter. However, the pointer of the existing differential pressure gauge uses a gear mechanism, which will affect the accuracy of the differential pressure judgment.

[0020] Example

[0021] like Figs. 1 to 3 As shown, this utility model provides a differential pressure gauge for an internal combustion engine filter, comprising:

[0022] A table body 1 is provided with a dial 2 at the top; the dial 2 is provided with a differential pressure value display and has a warning area, such as a red area, which indicates that the filter of the internal combustion engine needs to be replaced when the warning area is reached; it should be noted that the filter of the internal combustion engine can be a fuel filter or an oil filter.

[0023] An inductive unit 3 is arranged in a first cavity 4 in the table body 1 and includes a sensor 5 (such as a piston sensor); the output end of the sensor 5 is connected with a magnet 6; the output end of the sensor 5 is fixedly connected with an elastic member 7; the elastic member 7 is arranged in a second cavity 8 in the table body 1; the first cavity 4 and the second cavity 8 are separated by a protection groove 13;

[0024] The protection groove 13 is fixedly connected with the table body 1 and the dial 2; the protection groove 13 is provided with a through hole through which the output end of the sensor 5 is connected with the elastic member 7; the elastic member 7 includes but is not limited to a spring; when the output end of the sensor 5 is displaced, the spring is compressed; when the sensor 5 needs to be reset, it can be restored to the initial position under the action of the spring.

[0025] It should be noted that the protection groove 13 separates the area in the table body 1 into the first cavity 4 and the second cavity 8; the bottom of the table body 1 is provided with a high-pressure interface 14 and a low-pressure interface 15; the high-pressure interface 14 is connected to the first cavity 4, and the low-pressure interface 15 is connected to the second cavity 8; the two outer ends are respectively connected to the two ends of the filter, thereby realizing the pressure difference on both sides of the sensor 5.

[0026] A pointer unit 9 includes a rotating shaft 10 and a hands 11 fixed to the rotating shaft 10; the hands 11 is used to rotate above the dial 2; the rotating shaft 10 is fixed with an armature 12 in the table body 1; the armature 12 is used to couple with the magnet 6.

[0027] The specific working process of the pressure gauge is as follows:

[0028] The differential pressure gauge is connected to the two ends of the filter through the high-pressure interface 14 and the low-pressure interface 15, so that the sensor 5 (in the first cavity 4) and the output end of the sensor 5 (in the second cavity 8) produce a pressure difference, thereby causing the output end of the sensor 5 to drive the magnet 6 to produce a linear displacement, causing the magnet to couple with the armature 12 in the pointer unit 9, which will cause the pointer unit 9 to rotate around the rotating shaft 10 as the axis; when the hands 11 points to the warning area under the action of rotation, the filter core in the filter needs to be replaced; when the detection is completed, the high-pressure interface 14 and the low-pressure interface 15 are disconnected from the filter, and the output end of the sensor 5 is restored to the initial position under the action of the spring.

[0029] The differential pressure gauge for the filter of the diesel locomotive is characterized in that the pressure difference in two different cavities is collected by the sensor, the magnet fixed at the output end of the sensor generates linear displacement, the magnet and the armature fixed at the pointer unit are coupled, the rotation of the pointer is realized, the accurate display of the pressure is realized, and the low precision of the gear mechanism of the existing pressure gauge is avoided.

[0030] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A differential pressure gauge for use in a filter of an internal combustion engine vehicle, characterized by, Include: The table body (1), the top of the table body (1) is provided with a dial (2); Induction unit (3), the first cavity (4) is arranged in the table body (1) inside, including sensor (5), the output end of the sensor (5) is connected with magnet (6), the output end of the sensor (5) is fixedly connected with elastic element (7), the elastic element (7) is arranged in the second cavity (8) inside the table body (1); Pointer unit (9), including rotating shaft (10) and fixed to the rotating shaft (10) of the hands (11), the hands (11) are used to rotate above the dial (2); The rotating shaft (10) is fixed with the armature (12) inside the table body (1), the armature (12) is used to produce coupling with the magnet (6).

2. The differential pressure gauge for an internal combustion engine filter as set forth in claim 1, characterized by: The dial (2) is provided with warning area.

3. The differential pressure gauge for an internal combustion engine filter as set forth in claim 1, characterized by: The first cavity (4) and the second cavity (8) are separated by protection groove (13); The protection groove (13) and the table body (1) and the dial (2) are fixedly connected.

4. The differential pressure gauge for an internal combustion engine filter as set forth in claim 1 or 3, characterized by: The bottom of the table body (1) is provided with high voltage interface (14) and low voltage interface (15); The high voltage interface (14) accesses the first cavity (4), and the low voltage interface (15) accesses the second cavity (8).

5. The differential pressure gauge for an internal combustion engine filter as set forth in claim 1, characterized by: The elastic element (7) is a spring.

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