Integrated built-in electric control water drain valve

Abstract

The utility model provides an integral built-in electric control water drain valve, and relates to the technical field of automobile manufacturing. Comprising a shell and a connector body connected to the bottom of the shell in a threaded mode, an electromagnetic valve assembly is arranged at the top in the shell, a valve rod is arranged on the inner side of the connector body, a movable iron core assembly is arranged between the valve rod and the electromagnetic valve assembly, a reset spring is arranged at the top of the movable iron core assembly, and a degaussing piece is arranged at the top end of the reset spring. The bottom of the movable iron core assembly abuts against the top of the valve rod, a sealing valve port is formed in the top of the valve rod, a drainage channel communicated with the sealing valve port is formed in the inner side of the valve rod, a water inlet channel is formed in one side of the shell, and a heater assembly is arranged on the outer side of the valve rod. The water drain valve solves the problems that the internal structure of an existing water drain valve is complex, and the height of an exposed air cylinder is large.

Description

Technical Field

[0001] The utility model provides an integral built-in electric-controlled drain valve, which relates to the technical field of automobile manufacturing. Background Art

[0002] With the continuous development of modern science and technology, some vehicles use air brakes for auxiliary braking, which requires an air cylinder to store the air brake gas. When the compressed air is delivered to the air cylinder by the air pump, it will still contain a small amount of moisture even after passing through the dryer. If too much moisture remains for a long time, it will cause rust inside the air cylinder and impurities to appear, affecting the service life of the air cylinder, and the air storage capacity of the air cylinder will also decrease. Therefore, a drain valve is generally installed at the bottom of the air cylinder, and drainage can be performed regularly through the drain valve.

[0003] There are many problems with the electric drain valve technology currently used in the market: 1. The product is complex inside, has many sealing points, and is complex to process and assemble. 2. The height of the exposed air reservoir is high, which cannot be applied to low-floor urban buses; 3. The height of the exposed air reservoir is high, which can easily cause the product to be bumped, damaged, or leaked, resulting in the vehicle being unable to operate and potentially dangerous. To this end, we propose an integrated built-in electric drain valve. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing drain valve has a complex internal structure and a high height of the exposed air storage cylinder.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: an integral built-in electric-controlled drain valve, comprising a shell and a joint body threadedly connected to the bottom of the shell, an electromagnetic valve assembly is arranged at the top of the shell, a valve stem is arranged inside the joint body, a moving iron core assembly is arranged between the valve stem and the electromagnetic valve assembly, a reset spring is arranged at the top of the moving iron core assembly, a demagnetizing sheet is arranged at the top of the reset spring, the bottom of the moving iron core assembly is against the top of the valve stem, a sealing valve port is opened at the top of the valve stem, a drainage channel connected to the sealing valve port is opened on the inner side of the valve stem, a water inlet channel is opened on one side of the shell, and a heater assembly is arranged on the outer side of the valve stem.

[0006] Preferably, an annular filter screen is fixedly sleeved on the outer side of the shell, and the annular filter screen is arranged on the outer side of the water inlet channel.

[0007] Preferably, an O-ring is provided between the top end of the valve stem and the inner wall of the shell.

[0008] Preferably, a second O-ring is provided at the threaded connection between the shell and the joint body, and a third O-ring is fixedly connected to the outer side of the joint body.

[0009] Preferably, the bottom thread of the joint body is connected with a threaded plug for fixing the valve stem, an O-ring four is arranged between the threaded plug and the valve stem, and an O-ring five is arranged between the threaded plug and the joint body.

[0010] Preferably, the heater assembly is connected to a heater control line, and the heater control line extends to the outside of the connector body and is connected to a heater control end, and a 2-core AMP female end set is provided at one end of the heater control end away from the heater control line.

[0011] Preferably, the solenoid valve assembly is connected to a solenoid valve control line, and the solenoid valve control line extends to the outside of the connector body and is connected to a solenoid valve control end, and a 2-core AMP male terminal set is provided at one end of the solenoid valve control end away from the solenoid valve control line.

[0012] Beneficial effects of the utility model:

[0013] 1. Simplified structural layout, the solenoid valve adopts an integral injection molding structure, reducing sealing points, making assembly and subsequent maintenance simpler and more convenient;

[0014] 2. Replace with more reasonable control logic to effectively separate and discharge the oil-water mixture in the compressed air and extend the product life;

[0015] 3. The exposed part is small, which is applicable to a wider range of car models, reducing the risk of bumps, damages and product leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the overall structure of an integrated built-in electric control drain valve.

[0017] Figure 2 The utility model is a cross-sectional view of an integral built-in electric-controlled drain valve.

[0018] Figure 3 It is a partial enlarged view of an integral built-in electric-controlled drain valve of the utility model.

[0019] (1. Solenoid valve assembly; 2. Reset spring; 3. Demagnetizing sheet; 4. Moving iron core assembly; 5. Valve stem; 6. O-ring 1; 7. Annular filter; 8. O-ring 2; 9. O-ring 3; 10. 2-core AMP female end set; 11. 2-core AMP male end set; 12. Double-walled adhesive heat shrink tube 1; 13. Double-walled adhesive heat shrink tube 2; 14. Heater assembly; 15. Connector body; 16. Threaded plug; 17. O-ring 4; 18. O-ring 5; 19. Heater control end; 20. Solenoid valve control end; 21. Heater control line; 22. Solenoid valve control line; 23. Drain channel; 24. Water inlet channel; 25. Sealing valve port; 26. Shell) DETAILED DESCRIPTION

[0020] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

[0021] Reference Figures 1 to 3 The utility model provides an integral built-in electric-controlled drain valve, comprising a shell 26 and a joint body 15 threadedly connected to the bottom of the shell 26, a solenoid valve assembly 1 is arranged at the top of the shell 26, a valve stem 5 is arranged on the inner side of the joint body 15, a moving iron core component 4 is arranged between the valve stem 5 and the solenoid valve assembly 1, a reset spring 2 is arranged on the top of the moving iron core component 4, a demagnetizing sheet 3 is arranged on the top of the reset spring 2, the bottom of the moving iron core component 4 is against the top of the valve stem 5, a sealing valve port 25 is opened on the top of the valve stem 5, a drainage channel 23 connected to the sealing valve port 25 is opened on the inner side of the valve stem 5, a water inlet channel 24 is opened on one side of the shell 26, and a heater assembly 14 is arranged on the outer side of the valve stem 5. Specifically, the return spring 2 is fixedly connected to the top of the moving iron core assembly 4, and the demagnetizing sheet 3 is fixedly connected between the return spring 2 and the solenoid valve assembly 1. The moving iron core assembly 4 is pressed against the top of the valve stem 5 under the action of the return spring 2 to block the sealing valve port 25. When drainage is required, the solenoid valve assembly 1 is started, and the moving iron core assembly 4 is sucked up to expose the sealing valve port 25. The water, oil and impurities deposited at the bottom of the air storage cylinder enter the inner side of the shell 26 along with the compressed air through the water inlet channel 24, and then are discharged from the drainage channel 23. After drainage is completed, the moving iron core assembly 4 moves downward and resets under the action of the return spring 2, and blocks the sealing valve port 25 again.

[0022] Furthermore, in the utility model, an annular filter screen 7 is fixedly sleeved on the outside of the housing 26, and the annular filter screen 7 is arranged on the outside of the water inlet channel 24. Specifically, by setting the annular filter screen 7, larger impurities can be prevented from entering the drain valve, and the valve body can be prevented from being blocked.

[0023] Furthermore, in the present invention, an O-ring 16 is provided between the top end of the valve stem 5 and the inner wall of the housing 26, and an O-ring 28 is provided at the threaded connection between the housing 26 and the joint body 15. Specifically, the sealing points of the entire valve body are only the O-ring 28 and the O-ring 16, which is conducive to simplifying the processing and assembly process.

[0024] Furthermore, in the utility model, an O-ring 3 9 is fixedly connected to the outer side of the joint body 15, and the O-ring 3 9 is used for matching when the valve body is connected to the automobile air tank.

[0025] Furthermore, in the present invention, the bottom of the joint body 15 is threadedly connected with a threaded plug 16 for fixing the valve stem 5, an O-ring 17 is arranged between the threaded plug 16 and the valve stem 5, and an O-ring 18 is arranged between the threaded plug 16 and the joint body 15. Specifically, by setting a plurality of sealing rings, the valve body as a whole has good sealing performance.

[0026] Furthermore, in the utility model, the heater assembly 14 is connected to a heater control line 21, and the heater control line 21 extends to the outside of the connector body 15 and is connected to a heater control end 19, and a 2-core AMP female end set 10 is provided at one end of the heater control end 19 away from the heater control line 21.

[0027] Furthermore, the solenoid valve assembly 1 in the utility model is connected to a solenoid valve control line 22, and the solenoid valve control line 22 extends to the outside of the connector body 15 and is connected to a solenoid valve control end 20, and a 2-core AMP male end set 11 is provided at one end of the solenoid valve control end 20 away from the solenoid valve control line 22.

[0028] Furthermore, in the utility model, the outer sides of the solenoid valve control line 22 and the heater control line 21 are wrapped with a double-walled adhesive heat shrink tube 12, and a double-walled adhesive heat shrink tube 13 is wrapped between the double-walled adhesive heat shrink tube 12 and the connector body 15, so that the connecting lines are protected by the double-walled adhesive heat shrink tube 12 and the double-walled adhesive heat shrink tube 13.

[0029] The control logic method of the utility model is:

[0030] 1. The product has CAN bus and is connected to the vehicle VCU controller. The status of the product can be clearly reflected on the vehicle dashboard, such as normal, short circuit, open circuit and other information;

[0031] 2. The vehicle is powered on by ACC, and the ECU self-checks (0x0 system is normal); the ECU sends a message to the vehicle control unit (VCU) every 1000ms;

[0032] 3. After ECU self-check:

[0033] A. The system is normal and starts recording time. Every 1800 seconds, all the electronically controlled drain valves perform a drainage action in sequence. The solenoid valve assembly 1 is energized for 1.0 second; the drainage interval of each drain valve is 1.5 seconds;

[0034] B. The system is normal and starts recording time. After 30 seconds, the 1# and 2# electric drain valves perform drainage action. The solenoid valve assembly 1 is energized for 1.0 second; the discharge interval of each drain valve is 1.5 seconds; it operates once every 20 seconds, and this action is performed 3 times; (When there is a CAN air compressor signal, B is shielded)

[0035] C. The system reports a short circuit or open circuit fault, and the fault indicator light on the forced drainage switch flashes and lights up; the power supply of the corresponding faulty solenoid valve assembly 1 is cut off, and the time is recorded. Except for the faulty electronically controlled drain valve, the other electronically controlled drain valves perform a drainage action in sequence. The power-on time of the solenoid valve assembly 1 is 1.0 second; the discharge interval of each drain valve is 1.5 seconds;

[0036] D. The system is normal, the CAN signal is normal, the system CAN reads the start and stop signal of the air compressor, and controls the 1# and 2# electric control drain valves to perform drainage according to the start and stop signal of the air compressor;

[0037] 30 seconds after the air compressor is started, the 1# and 2# electric control drain valves begin to drain water. The solenoid valve assembly 1 is energized for 1.0 second, and the discharge interval of each drain valve is 1.5 seconds.

[0038] During the air compressor pumping process, the 1# and 2# electric drain valves will perform drainage once every 30 seconds;

[0039] After the air compressor stops pumping, the action stops and then executes item A;

[0040] E. When the vehicle ACC is powered off, the ECU controls all the electronically controlled drain valves to perform a drainage action in sequence. The solenoid valve assembly 1 is powered on for 1.0 second, and the drainage interval of each drain valve is 1.5 seconds.

[0041] 4. When the vehicle air compressor (air pump) is working, you can press the forced sewage discharge switch (reset type) to perform forced sewage discharge operation;

[0042] 5. When winter comes, you can press the heating switch (seesaw type). When the temperature is ≤30℃, the heater assembly 14 will start to heat the product to ensure that the sealing valve port 25 of the product does not freeze in winter; when the product temperature is ≥50℃, the heater assembly 14 will automatically disconnect to ensure its service life.

[0043] Working principle: When draining water, the solenoid valve assembly 1 is energized, the moving iron core component 4 is sucked up, exposing the sealing valve port 25, and the water, oil and impurities deposited at the bottom of the air storage cylinder enter the inner side of the shell 26 through the water inlet channel 24 along with the compressed air, and then are discharged from the drainage channel 23. After the drainage is completed, the moving iron core component 4 moves downward and resets under the action of the reset spring 2, and blocks the sealing valve port 25 again.

[0044] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An integrated built-in electric control drain valve, characterized in that: It includes a shell and a joint body threadedly connected to the bottom of the shell, a solenoid valve assembly is arranged at the top of the shell, a valve stem is arranged inside the joint body, a moving iron core assembly is arranged between the valve stem and the solenoid valve assembly, a reset spring is arranged at the top of the moving iron core assembly, a demagnetizing sheet is arranged at the top of the reset spring, the bottom of the moving iron core assembly is against the top of the valve stem, a sealing valve port is opened at the top of the valve stem, a drainage channel connected to the sealing valve port is opened on the inner side of the valve stem, a water inlet channel is opened on one side of the shell, and a heater assembly is arranged on the outer side of the valve stem.

2. The integrated built-in electric control drain valve according to claim 1, characterized in that: An annular filter screen is fixedly sleeved on the outer side of the shell, and the annular filter screen is arranged on the outer side of the water inlet channel.

3. The integrated built-in electric control drain valve according to claim 1, characterized in that: An O-ring is arranged between the top end of the valve stem and the inner wall of the shell.

4. The integrated built-in electric control drain valve according to claim 1, characterized in that: The threaded connection between the shell and the joint body is provided with an O-ring 2, and the outer side of the joint body is fixedly connected with an O-ring 3.

5. The integrated built-in electric control drain valve according to claim 1, characterized in that: The bottom of the joint body is threadedly connected with a threaded plug for fixing the valve stem, an O-ring four is arranged between the threaded plug and the valve stem, and an O-ring five is arranged between the threaded plug and the joint body.

6. The integrated built-in electric control drain valve according to claim 1, characterized in that: The heater assembly is connected to a heater control line, and the heater control line extends to the outside of the connector body and is connected to a heater control end, and a 2-core AMP female end set is provided at one end of the heater control end away from the heater control line.

7. The integrated built-in electric-controlled drain valve according to claim 1, characterized in that: The solenoid valve assembly is connected to a solenoid valve control line, and the solenoid valve control line extends to the outside of the connector body and is connected to a solenoid valve control end, and a 2-core AMP male terminal set is provided at one end of the solenoid valve control end away from the solenoid valve control line.

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