A convenient manual drain valve

Abstract

The present invention discloses a convenient manual drain valve, which relates to the technical field of drain valves, including a valve body, a valve stem, a valve, a spring seat, a drain valve spring, a retaining ring for a hole, and a key ring arranged on the valve stem, wherein the outer side of the valve body is provided with an external thread, and the external thread is connected with the internal thread in the air storage cylinder in the brake pipeline, the interior of the valve body is provided with a cavity, the top of the valve body is provided with a notch, and the bottom of the notch is provided with a plurality of card slots. The present invention uses the card block and the card slot to correspond to each other, the card block is aligned with the card slot to enter the cavity, and then the filter screen is rotated counterclockwise, so that the filter screen drives the card block to rotate a certain angle, so that the negative pole magnet block on the card block is closely attached to the positive pole magnet block inside the cavity and attracts and fixes each other, so that the filter screen falls into the notch to block impurities, and similarly, the filter screen can be easily separated from the cavity by rotating the filter screen in the reverse direction, leaving the position of the notch, so as to facilitate cleaning and replacement.

Description

Technical Field

[0001] The invention relates to the technical field of drain valves, in particular to a convenient-to-use manual drain valve. Background Art

[0002] The air cylinder is a gas storage device in the automobile braking system. It is used for automobile braking, horn and other systems. The automobile air cylinder stores compressed air for braking or other gas needs. Once the air is compressed, the pressure increases, and the gaseous water (water vapor) in the air will condense into liquid water and deposit at the bottom of the air cylinder. Over time, the more water accumulates, the more it will occupy the effective volume of the air cylinder. Therefore, a drain valve should be installed at the bottom of the air cylinder to drain water regularly to ensure that the air cylinder always has enough effective volume.

[0003] The structure of the existing drain valve is a valve body, a valve core, a valve stem, and a spring seat connected to the valve stem. By lifting the valve stem, oil, water and impurities in the brake pipeline are discharged to the atmosphere through the gap between the valve body and the valve core. However, in the structure of the existing drain valve, impurities cannot be filtered when the oil and water are discharged, which easily clogs the drain valve. In addition, when lifting the valve stem, it is necessary to press it with hands all the time, which is inconvenient to use. Summary of the invention

[0004] The purpose of the present invention is to provide a convenient manual drain valve to solve the problems that in the existing drain valve structure, impurities cannot be filtered when discharging oil and water, the drain valve is easily blocked, and the valve stem needs to be pressed by hand when lifting it, which is inconvenient to use.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a convenient manual drain valve, comprising a valve body, a valve stem, a valve, a spring seat, a drain valve spring, a retaining ring for a hole and a key ring arranged on the valve stem, the outer side of the valve body is provided with an external thread, and the external thread is connected with the internal thread in the air reservoir in the brake pipeline, the interior of the valve body is provided with a cavity, the top of the valve body is provided with a notch, and the bottom of the notch is provided with multiple groups of card slots, a receiving cavity is provided below the card slot, and a positive pole magnet block is fixed on the side of the receiving cavity close to the card slot, a filter screen is provided inside the notch, a fixed block is fixed on one side of the valve body, and an adjusting rod is provided on the inner side of the fixed block, both ends of the adjusting rod are fixed with connecting rods rotatably connected to the fixed block, the end of the adjusting rod is rotatably connected to the valve stem, a ratchet is fixed on the outer side of the connecting rod, an adjusting plate is rotatably connected to the interior of the fixed block, and a spring is fixed at the bottom of the adjusting plate, and the bottom of the spring is fixedly connected to the fixed block.

[0006] Preferably, a plurality of groups of card blocks corresponding to the card slots are fixed to the bottom of the filter screen, and the card blocks are in an "L"-shaped structure.

[0007] Preferably, a negative pole magnet block that attracts the positive pole magnet block is fixed to one end of the clamping block, and the clamping block is detachably connected to the cavity through the mutual cooperation between the positive pole magnet block and the negative pole magnet block.

[0008] Preferably, a non-return pawl that meshes with the ratchets is fixed on the top of the adjustment plate.

[0009] Preferably, a groove is provided at the bottom of the fixing block, and the groove is in an arc-shaped structure.

[0010] Preferably, the adjustment rod has a rotation angle of 0°-90° with the connecting rod as a base point.

[0011] Preferably, a through groove cooperating with the valve stem 2 is provided at the bottom of the valve body.

[0012] Preferably, the diameter of the valve is larger than the diameter of the through groove, and a gap is formed between the valve and the valve body.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention uses the card block and the card slot to correspond to each other, the card block is aligned with the card slot and enters the cavity, and then the filter screen is rotated counterclockwise, so that the filter screen drives the card block to rotate a certain angle, so that the negative pole magnet block on the card block is closely attached to the positive pole magnet block inside the cavity and attracts and fixes each other, so that the filter screen falls into the gap to block impurities. Similarly, the filter screen can be easily separated from the cavity and away from the gap by rotating the filter screen in the opposite direction, so as to facilitate cleaning and replacement;

[0015] 2. The present invention uses the thumb to press the position of the groove, and then presses the adjusting rod to move downward, so that the adjusting rod drives the valve stem to rotate and move upward in the through groove, so that the valve stem squeezes the drain valve spring, so that a gap is formed between the valve and the valve body, and the valve stem can be directly lifted up for operation, which is convenient to use;

[0016] 3. The present invention rotates the adjusting rod to drive the connecting rod to rotate, and the connecting rod drives the ratchet to rotate, so that the ratchet squeezes the non-return pawl, and the non-return pawl drives the adjusting plate to move downward and squeezes the spring, so that the adjusting plate is inclined at a certain angle until the non-return pawl leaves the current position of the ratchet, and the resetting action of the spring pushes the adjusting plate and the non-return pawl upward to make the non-return pawl snap onto the ratchet, limiting the position of the ratchet, thereby limiting the position of the connecting rod and the adjusting rod, further assisting the limiting of the valve stem position, and facilitating the water discharge operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the filter screen and the valve body of the present invention;

[0019] Figure 3 It is an enlarged view of A of the present invention;

[0020] Figure 4 It is a front view of the fixing block of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the fixing block of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the ratchet and the non-return pawl of the present invention.

[0023] In the figure: 1. key ring; 2. valve stem; 3. valve; 4. spring seat; 5. valve body; 6. drain valve spring; 7. retaining ring for hole; 8. cavity; 9. notch; 10. slot; 11. cavity; 12. positive magnet block; 13. filter screen; 14. block; 15. negative magnet block; 16. external thread; 17. through slot; 18. fixing block; 19. adjusting rod; 20. groove; 21. connecting rod; 22. ratchet; 23. adjusting plate; 24. spring; 25. check pawl; 26. pressure rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper" and "lower"

[0026] The directions or positional relationships indicated by "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of its embodiments based on the overall structure of the present invention.

[0027] See also Figure 1-6 A convenient manual drain valve includes a valve body 5, a valve stem 2, a valve 3, a spring seat 4, a drain valve spring 6, a retaining ring 7 for a hole, and a key ring 1 arranged on the valve stem 2. The outer side of the valve body 5 is provided with an external thread 16, and the external thread 16 is connected with the internal thread of the air reservoir in the brake pipeline. The interior of the valve body 5 is provided with a cavity 8, the top of the valve body 5 is provided with a notch 9, and the bottom of the notch 9 is provided with a plurality of groups of card slots 10, and a cavity 11 is provided below the card slot 10, and the inside of the cavity 11 is fixed near the card slot 10. A positive magnet block 12 is fixed, a filter screen 13 is arranged inside the notch 9, a fixed block 18 is fixed on one side of the valve body 5, and an adjusting rod 19 is arranged on the inner side of the fixed block 18, connecting rods 21 rotatably connected to the fixed block 18 are fixed at both ends of the adjusting rod 19, the end of the adjusting rod 19 is rotatably connected to the valve stem 2, a ratchet 22 is fixed on the outer side of the connecting rod 21, an adjusting plate 23 is rotatably connected inside the fixed block 18, and a spring 24 is fixed to the bottom of the adjusting plate 23, and the bottom of the spring 24 is fixedly connected to the fixed block 18.

[0028] In this embodiment, through the mutual correspondence between the block 14 and the slot 10, the block 14 is aligned with the slot 10 and enters the cavity 11, and then the filter screen 13 is rotated counterclockwise, so that the filter screen 13 drives the block 14 to rotate a certain angle, so that the negative pole magnet block 15 on the block 14 is close to the positive pole magnet block 12 inside the cavity 11 and attracts and fixes each other, so that the filter screen 13 falls into the gap 9 to block impurities. A plurality of mesh holes are arranged in the filter screen 13, and the mesh holes and the cavity 8 are circulated with each other, so that oil, water, etc. can enter the cavity 8 through the mesh holes, and impurities are retained on the top of the mesh holes. Similarly, the filter screen 13 is rotated in the opposite direction, which can facilitate the separation of the filter screen 13 from the cavity 11 and away from the position of the gap 9, so as to facilitate cleaning and replacement.

[0029] Please refer to Figure 1 , 2 3. A plurality of blocks 14 corresponding to the card slots 10 are fixed at the bottom of the filter 13, and the blocks 14 are in an "L"-shaped structure; a negative magnet block 15 that attracts the positive magnet block 12 is fixed at one end of the block 14, and the block 14 is detachably connected to the cavity 11 through the mutual cooperation of the positive magnet block 12 and the negative magnet block 15. The block 14 is inserted into the card slot 10, and the block enters the cavity 11 for limiting, thereby assisting in fixing the filter 13, thereby further filtering impurities.

[0030] Please refer to Figure 5 and 6 The top of the adjusting plate 23 is fixed with a check pawl 25 which meshes with the ratchet 22. The adjusting rod 19 is rotated to make the adjusting rod 19 drive the connecting rod 21 to rotate, so that the connecting rod 21 drives the ratchet 22 to rotate counterclockwise, so that the ratchet 22 squeezes the check pawl 25. The check pawl 25 drives the adjusting plate 23 to move downward and squeezes the spring 24, so that the adjusting plate 23 is inclined at a certain angle until the check pawl 25 leaves the current position of the ratchet 22. Through the reset action of the spring 24, the adjusting plate 23 and the check pawl 25 are pushed upward to move upward, so that the check pawl 25 is stuck on the ratchet 22, and the ratchet 22 is limited, thereby limiting the position of the connecting rod 21 and the adjusting rod 19, further assisting the limiting of the position of the valve stem 2, and facilitating the water discharge operation. By pressing the pressing rod 26, the check pawl 25 leaves the ratchet 22, and the adjusting rod 19 rotates back to the initial position, which is convenient for moving the valve stem 2 to the initial position.

[0031] Please refer to Figure 1 and 4 A groove 20 is provided at the bottom of the fixing block 18, and the groove 20 is in an arc-shaped structure, so that the position of the groove 20 can be easily pressed by hand for convenient operation.

[0032] Please refer to Figure 1 , 4and 5. The rotation angle of the adjusting rod 19 with the connecting rod 21 as the base point is 0°-90°. When the right side of the adjusting rod 19 is in the counterclockwise rotation direction, it is in the state of driving the valve stem 2 to be lifted upward, and the drainage operation can be performed. The height of the adjusting rod 19 rotated counterclockwise is different from the angle of the initial position, and the height of lifting the valve stem 2 is different, so that the intermittent heights of the valve 3 and the valve body 5 are also different. During the counterclockwise rotation of the adjusting rod 19, the connecting rod 21 and the ratchet 22 are driven to rotate counterclockwise, so that the ratchet 22 squeezes the non-return pawl 25 downward to complete the counterclockwise rotation of the ratchet 22. When the ratchet 22 rotates in the opposite direction, the ratchet 22 is stuck by the non-return pawl 25 and stops rotating. The mutual engagement of the ratchet 22 and the non-return pawl 25 is used to limit the rotation of the ratchet 22, thereby facilitating the adjustment of the discharge volume.

[0033] Please refer to Figure 1 A through groove 17 cooperating with the valve stem 2 is provided at the bottom of the valve body 5, so that the valve stem 2 can move up and down in the through groove 17, so that the valve 3 leaves and is in close contact with the contact surface of the through groove 17, which is convenient for the discharge of oil, water, impurities, etc.

[0034] Please refer to Figure 1 The diameter of the valve 3 is larger than the diameter of the through groove 17, and a gap is formed between the valve 3 and the valve body 5. Use your thumb to press the position of the groove 20, and then press the adjusting rod 19 to move downward, so that the right side of the adjusting rod 19 drives the valve stem 2 to rotate, and moves upward in the through groove 17, so that the valve stem 2 squeezes the drain valve spring 6, so that the gap formed between the valve 3 and the valve body 5 can facilitate the discharge of oil, water, impurities, etc., and the valve stem 2 can be directly lifted upward for operation, which is convenient to use.

[0035] Working principle: When draining water, lift the valve stem 2 upward, so that the valve stem 2 drives the adjusting rod 19 to rotate, so that the adjusting rod 19 drives the connecting rod 21 to rotate, so that the adjusting rod 19 drives the connecting rod 21 to rotate, so that the connecting rod 21 drives the ratchet 22 to rotate counterclockwise, so that the ratchet 22 squeezes the non-return pawl 25, and the non-return pawl 25 drives the adjusting plate 23 to move downward and squeezes the spring 24, so that the adjusting plate 23 is inclined at a certain angle until the non-return pawl 25 leaves the current position of the ratchet 22, and the adjusting plate 23 and the non-return pawl 25 are pushed upward by the reset action of the spring 24, so that the non-return pawl 25 is stuck in the adjusting plate 23. The ratchet 22 is moved to a position where the ratchet 22 is limited, thereby limiting the position of the connecting rod 21 and the adjusting rod 19, further assisting the limiting of the position of the valve stem 2, so that the oil, water and impurities in the brake line are discharged to the atmosphere through the gap between the valve body 5 and the valve 3. The adjusting rod 19 can also be directly rotated to drive the valve stem 2 to lift up, and the filter screen 13 can be rotated clockwise so that the filter screen 13 drives the negative pole magnet block 15 on the card block 14 to leave the positive pole magnet block 12 of the cavity 11 and take it out of the card slot 10, which can facilitate the separation of the filter screen 13 from the cavity 11 and leave the position of the notch 9, so as to facilitate cleaning and replacement.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A convenient manual drain valve, comprising a valve body (5), a valve stem (2), a valve (3), a spring seat (4), a drain valve spring (6), a retaining ring (7) for a hole, and a key ring (1) arranged on the valve stem (2), wherein the outer side of the valve body (5) is provided with an external thread (16), and the external thread (16) is connected to the internal thread of an air reservoir in a brake line, and the interior of the valve body (5) is provided with a cavity (8), characterized in that: The top of the valve body (5) is provided with a notch (9), and the bottom of the notch (9) is provided with a plurality of slots (10); a cavity (11) is provided below the slots (10), and a positive pole magnet block (12) is fixed to a side of the cavity (11) close to the slots (10); a filter screen (13) is provided inside the notch (9); a fixed block (18) is fixed to one side of the valve body (5), and an adjusting rod (19) is provided on the inner side of the fixed block (18); connecting rods (21) rotatably connected to the fixing block (18) are fixed at both ends of the adjusting rod (19); the end of the adjusting rod (19) is rotatably connected to the valve stem (2); a ratchet (22) is fixed to the outer side of the connecting rod (21); an adjusting plate (23) is rotatably connected to the inside of the fixing block (18), and a spring (24) is fixed to the bottom of the adjusting plate (23); the bottom of the spring (24) is fixedly connected to the fixing block (18); A plurality of groups of card blocks (14) corresponding to the card slots (10) are fixed at the bottom of the filter screen (13), and the card blocks (14) are in an "L"-shaped structure. A negative pole magnet block (15) that attracts the positive pole magnet block (12) is fixed at one end of the card block (14). The card block (14) is detachably connected to the cavity (11) through the mutual cooperation of the positive pole magnet block (12) and the negative pole magnet block (15). A non-return pawl (25) that meshes with the ratchet (22) is fixed at the top of the adjustment plate (23); The adjustment rod (19) has a rotation angle of 0°-90° with the connecting rod (21) as a base point.

2. The convenient manual drain valve according to claim 1, characterized in that: The bottom of the fixing block (18) is provided with a groove (20), and the groove (20) is in an arc-shaped structure.

3. The convenient-to-use manual drain valve according to claim 1, characterized in that: The bottom of the valve body (5) is provided with a through groove (17) that cooperates with the valve stem (2).

4. The convenient manual drain valve according to claim 3, characterized in that: The diameter of the valve (3) is greater than the diameter of the through groove (17), and a gap is formed between the valve (3) and the valve body (5).

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