Three-way valve for ship fuel oil supply system

Abstract

The three-way valve for the ship fuel oil supply system comprises a three-way valve body, a valve element shell is arranged on the three-way valve body, a limiting plate is fixedly arranged at the top of the valve element shell, a limiting groove is formed in the limiting plate, a valve element is arranged in the valve element shell in a rotating mode, and a lead screw is fixedly arranged at the top of the valve element. A holding part is arranged on the lead screw and comprises a transverse rod, the transverse rod is sleeved with an anti-skid sleeve, a first sliding rod is arranged on the transverse rod and penetrates through the anti-skid sleeve to be used for limiting the anti-skid sleeve, a vertical rod is fixedly arranged at one end of the transverse rod, a disc is fixedly arranged at the bottom of the vertical rod, a sliding groove is formed in the disc, and a sliding block is arranged in the sliding groove in a sliding mode. Limiting blocks are fixedly arranged at the bottoms of the sliding blocks, the limiting blocks are matched with the limiting grooves in an inserted mode and used for limiting rotation of the disc, the disc is connected with the lead screw, and a transmission assembly used for driving the sliding blocks to move up and down is arranged on the vertical rod. The situation that the valve element is impacted by liquid in the pipeline for a long time and rotates is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of three-way valves, in particular to a three-way valve for a ship fuel supply system. Background Art

[0002] A three-way valve is a valve device with three ports, one for inlet and two for outlet. In order to reduce the cost of ship fuel, heavy oil is generally used as the main fuel, which is mainly used for main engines, generators, boilers, etc. In case of emergencies, the fuel supply of the generator needs to be switched to the emergency diesel pump to supply diesel to ensure the normal operation of the generator. The existing three-way valve handle is equipped with an anti-slip cover to increase the friction between the hand and the handle, making it easier to open the valve. However, the protective cover is easy to fall off the handle during use, which brings inconvenience to the operation.

[0003] A three-way valve is disclosed in a Chinese patent document with publication number CN217108459U, including a three-way valve body, an actuator is provided on the top of the three-way valve body, a handle is sleeved on the actuator, the handle includes a holding portion and a connecting portion sleeved on the actuator, an anti-slip sleeve is sleeved on the holding portion, a guide groove is provided on the holding portion, and a groove coincident with the guide groove is provided on the anti-slip sleeve, the guide groove is a wedge-shaped groove, and a positioning block for cooperating with the guide groove to fix the anti-slip sleeve is also provided on the holding portion, the positioning block includes a top shell, a wedge-shaped block and a connecting block connecting the top shell and the wedge-shaped block.

[0004] The disadvantage of the above disclosed solution is that the liquid in the pipeline impacts the valve core for a long time, which can easily cause the valve core to rotate. At the same time, the staff may accidentally touch the handle to cause the valve core to rotate, resulting in the valve core rotating and changing the liquid flow or the valve core not closing tightly. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a three-way valve for a ship fuel supply system. By setting a limit block and a limit groove for plugging and cooperating, it is used to limit the rotation of the handle, thereby preventing the valve core from rotating under the impact of liquid for a long time, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-way valve for a fuel supply system of a ship, comprising a three-way valve body, a valve core housing is arranged on the three-way valve body, a limit plate is fixedly arranged on the top of the valve core housing, a limit groove is provided on the limit plate, a valve core is rotatably arranged inside the valve core housing, a screw rod is fixedly arranged on the top of the valve core, a holding part is arranged on the screw rod, the holding part comprises a cross bar, an anti-slip sleeve is sleeved on the cross bar, a first slide rod is arranged on the cross bar, the first slide rod passes through the anti-slip sleeve and is used to limit the anti-slip sleeve, a vertical rod is fixedly arranged at one end of the cross bar, a disk is fixedly arranged at the bottom of the vertical rod, a slide groove is provided on the disk, a sliding block is slidably arranged in the slide groove, a limit block is fixedly arranged at the bottom of the sliding block, the limit block is plug-in-matched with the limit groove and is used to limit the rotation of the disk, the disk is connected to the screw rod, and a transmission component for driving the sliding block to move up and down is arranged on the vertical rod.

[0007] Furthermore, the transmission assembly includes a second sliding rod, the second sliding rod passes through the vertical plate and is slidably connected to the vertical plate, both end surfaces of the second sliding rod are inclined surfaces, the first sliding rod is slidably connected to the cross bar, the bottom surface of the first sliding rod is an inclined surface, the bottom surface of the first sliding rod is slidably matched with the end surface of the second sliding rod, a fifth through hole is opened on the top of the slider, the other end surface of the second sliding rod is slidably matched with the fifth through hole, and two first limiting rings are fixedly provided on the second sliding rod, and the two first limiting rings are respectively located on both sides of the vertical rod, and a spring is fixedly provided between one of the first limiting rings and the vertical plate.

[0008] Furthermore, a second limiting ring is fixedly provided on one side of the first sliding rod close to the second sliding rod.

[0009] Furthermore, a first through hole is formed on the disc, and a square block is fixedly provided on the screw rod, and the square block is adapted to the first through hole.

[0010] Furthermore, a nut is threadedly connected to the screw rod, and a diameter of the nut is greater than a width of the first through hole.

[0011] Furthermore, three limiting grooves are provided on the limiting plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By setting the limit block to be plugged into the corresponding limit groove. When the holding part needs to be rotated, hold the anti-slip sleeve and use the thumb to press down the first slide bar at the same time, so that the limit block is separated from the limit groove and the restriction on the holding part is released. After adjusting the connection mode, the thumb releases the first slide bar, so that the limit block enters another limit groove, fixes the holding part, and prevents the holding part from rotating. Since the holding part cooperates with the square block, and the square block is fixedly connected to the screw rod, after the holding part is fixed, the screw rod cannot rotate, and the valve core cannot rotate at the same time. It avoids the situation that the valve core is impacted by the liquid in the pipeline for a long time and rotates the valve core, and also avoids the situation that the staff accidentally touches the holding part to drive the valve core to rotate. Thereby, it is avoided that the flow of liquid changes due to the rotation of the valve core or the valve core is not closed tightly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the position of the limit groove of the structure of the utility model;

[0016] Figure 3 It is an enlarged schematic diagram of point A of the structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the holding part of the structure of the utility model;

[0018] Figure 5 The figure is a schematic diagram of a slider and a limit block of the utility model structure.

[0019] In the figure: 1. three-way valve body; 2. valve core housing; 3. limit plate; 4. anti-slip sleeve; 5. first slide rod; 6. gripping part; 7. slider; 8. nut; 9. square block; 10. screw rod; 11. first through hole; 12. limit groove; 13. second through hole; 14. first limit ring; 15. second slide rod; 16. spring; 17. second limit ring; 18. third through hole; 19. slide groove; 20. fourth through hole; 21. limit block; 22. fifth through hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 5The utility model provides a technical solution: a three-way valve for a ship fuel supply system, comprising a three-way valve body 1, a valve core housing 2 connected to the three-way valve body 1 is installed on the three-way valve body 1, a limit plate 3 is fixedly installed on the top of the valve core housing 2, and three limit grooves 12 are arranged in a 90-degree array along the center circumference of the limit plate 3.

[0022] A valve core is rotatably mounted inside the valve core housing 2, a screw rod 10 is fixedly mounted on the top of the valve core, and a holding portion 6 is mounted on the screw rod 10. The holding portion 6 includes a crossbar, an anti-slip sleeve 4 is sleeved on the crossbar, a second through hole 13 is provided on the anti-slip sleeve 4, a third through hole 18 corresponding to the second through hole 13 is provided on the crossbar, a first slide bar 5 is slidably mounted in the third through hole 18, and the first slide bar 5 slides upward through the second through hole 13 to limit the anti-slip sleeve 4 to prevent the anti-slip sleeve 4 from falling off the crossbar.

[0023] A vertical rod is fixedly installed at one end of the horizontal rod, a disk is fixedly installed at the bottom of the vertical rod, a slide groove 19 is provided on the disk, a slider 7 is slidably installed in the slide groove 19, a limit block 21 is fixedly installed at the bottom of the slider 7, and the limit block 21 is plugged and matched with the corresponding limit groove 12 to limit the rotation of the disk. Each limit groove 12 and the limit block 21 are plugged and matched to each other to correspond to a connection mode.

[0024] The disc is provided with a first through hole 11, and a square block 9 is fixedly mounted on the outer surface of the screw rod 10, and the square block 9 is adapted to the first through hole 11. A nut 8 is threadedly connected to the screw rod 10, and the diameter of the nut 8 is greater than the width of the first through hole 11.

[0025] A transmission assembly for driving the slider 7 to move up and down is installed on the vertical rod. The transmission assembly includes a second slide bar 15, and a fourth through hole 20 is opened on the vertical rod. The second slide bar 15 passes through the fourth through hole 20 horizontally and is installed in a sliding fit with the fourth through hole 20. Both end surfaces of the second slide bar 15 are inclined surfaces. The bottom of the first slide bar 5 extends downward to the bottom of the cross bar, and the bottom surface of the first slide bar 5 is an inclined surface, and the bottom surface of the first slide bar 5 is in a sliding fit with the end surface of the second slide bar 15. The height of the inclined surfaces on the first slide bar 5 and the second slide bar 15 is greater than the distance of the second slide bar 15 moving horizontally, so as to prevent the first slide bar 5 from falling downward from the second through hole 13.

[0026] A fifth through hole 22 is formed on the top of the slider 7 . The top of the fifth through hole 22 is a trapezoidal structure. The other end surface of the second slide bar 15 is slidably matched with the inclined surface on the top of the fifth through hole 22 .

[0027] When the limiting block 21 is located in the limiting groove 12 , there is a gap between the bottom surface of the other end of the second slide bar 15 and the bottom surface of the fifth through hole 22 , so that the second slide bar 15 cannot drive the slider 7 to move up and down.

[0028] Two first limiting rings 14 are fixedly mounted on the outer surface of the second slide bar 15, and the two first limiting rings 14 are respectively located on both sides of the vertical bar to prevent the second slide bar 15 from being separated from the fourth through hole 20. A spring 16 is fixedly mounted between the first limiting ring 14 and the vertical plate close to the first slide bar 5. The spring 16 is sleeved on the second slide bar 15, one end of the spring 16 is fixedly mounted with the vertical bar, and the other end of the spring 16 is fixedly mounted with the first limiting ring 14.

[0029] When the limiting block 21 is located in the limiting groove 12 , the spring 16 is in a natural state.

[0030] A second limiting ring 17 is fixedly mounted on one side of the first slide bar 5 close to the second slide bar 15 to prevent the first slide bar 5 from falling off upward from the second through hole 13 .

[0031] The working principle of a three-way valve for a ship fuel supply system provided by the utility model is as follows:

[0032] When it is necessary to change the connection mode between the three-way valve body 1 and each pipeline, the staff member holds the anti-slip cover 4 and presses the first slide bar 5 downward with the thumb to move the first slide bar 5 downward. Under the sliding cooperation between the bottom surface of the first slide bar 5 and the end surface of the second slide bar 15, the second slide bar 15 slides along the fourth through hole 20 and moves toward the direction close to the slider 7, and compresses the spring 16.

[0033] At the same time, the inclined surface at the other end of the second slide rod 15 slides with the inclined surface at the top of the fifth through hole 22 to move the slider 7 upward, and the slider 7 drives the limit block 21 to move upward, so that the limit block 21 is separated from the limit groove 12.

[0034] Then, hold the anti-slip sleeve 4 to drive the disc to rotate through the vertical rod, the disc drives the square block 9 to rotate through the first through hole 11, the square block 9 drives the screw rod 10 to rotate, and the screw rod 10 drives the valve core to rotate, thereby changing the connection mode between the three-way valve body 1 and each pipeline.

[0035] After the connection mode is adjusted, the limit block 21 is just above the other limit groove 12. Then the thumb releases the first slide bar 5, and under the action of the restoring force of the spring 16, the second slide bar 15 moves toward the direction close to the first slide bar 5, so that the slider 7 moves downward along the inclined surface of the other end of the second slide bar 15 under the action of gravity, and the slider 7 moves downward to drive the limit block 21 to move downward, and the limit block 21 moves downward to cooperate with the other limit groove 19, so that the position of the holding part 6 is fixed. It prevents the valve core from being impacted by the liquid in the pipeline for a long time and causing the valve core to rotate, and also prevents the staff from accidentally touching the holding part 6 and causing the valve core to rotate. It prevents the valve core from rotating and causing the flow of the liquid to change or the valve core to close loosely.

[0036] Then the nut 8 is rotated downward along the screw rod 10 to closely fit with the upper surface of the disc to prevent the holding portion 6 from falling off.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-way valve for a ship fuel supply system, comprising a three-way valve body (1), characterized in that: The three-way valve body (1) is provided with a valve core housing (2), a limit plate (3) is fixedly provided on the top of the valve core housing (2), a limit groove (12) is provided on the limit plate (3), a valve core is rotatably provided inside the valve core housing (2), a screw rod (10) is fixedly provided on the top of the valve core, a holding portion (6) is provided on the screw rod (10), the holding portion (6) comprises a cross bar, an anti-slip sleeve (4) is sleeved on the cross bar, a first slide bar (5) is provided on the cross bar, and the first slide bar (5) passes through the anti-slip sleeve The sliding sleeve (4) is used to limit the anti-slip sleeve (4). A vertical rod is fixedly arranged at one end of the horizontal rod. A disk is fixedly arranged at the bottom of the vertical rod. A sliding groove (19) is provided on the disk. A sliding block (7) is slidably arranged in the sliding groove (19). A limiting block (21) is fixedly arranged at the bottom of the sliding block (7). The limiting block (21) is plugged into and matched with the limiting groove (12) to limit the rotation of the disk. The disk is connected to the screw rod (10). A transmission component for driving the sliding block (7) to move up and down is arranged on the vertical rod.

2. The three-way valve for a ship fuel supply system according to claim 1, characterized in that: The transmission assembly comprises a second slide bar (15), the second slide bar (15) passes through the vertical plate and is slidably connected with the vertical plate, both end surfaces of the second slide bar (15) are inclined surfaces, the first slide bar (5) is slidably connected with the cross bar, the bottom surface of the first slide bar (5) is an inclined surface, the bottom surface of the first slide bar (5) is slidably matched with the end surface of the second slide bar (15), a fifth through hole (22) is opened on the top of the slider (7), the other end surface of the second slide bar (15) is slidably matched with the fifth through hole (22), and two first limiting rings (14) are fixedly arranged on the second slide bar (15), and the two first limiting rings (14) are respectively located on both sides of the vertical bar, and a spring (16) is fixedly arranged between one of the first limiting rings (14) and the vertical plate.

3. The three-way valve for a ship fuel supply system according to claim 2, characterized in that: A second limiting ring (17) is fixedly arranged on one side of the first sliding rod (5) close to the second sliding rod (15).

4. The three-way valve for a ship fuel supply system according to claim 1, characterized in that: The disc is provided with a first through hole (11), and a square block (9) is fixedly arranged on the screw rod (10), wherein the square block (9) is adapted to the first through hole (11).

5. The three-way valve for a ship fuel supply system according to claim 4, characterized in that: The screw rod (10) is threadedly connected with a nut (8), and the diameter of the nut (8) is greater than the width of the first through hole (11).

6. The three-way valve for a ship fuel supply system according to claim 1, characterized in that: Three limiting grooves (12) are provided on the limiting plate (3).

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