Pressure switch for controlling start and stop of oil pump

Abstract

The utility model discloses a pressure switch for controlling start and stop of an oil pump, which relates to the technical field of pressure switches and comprises an oil pump main body, the top of the oil pump main body is communicated with a second connecting pipe, a pressure switch main body is arranged above the oil pump main body, and the bottom of the pressure switch main body is communicated with a first connecting pipe. A communicating hole is formed in the bottom wall of the first connecting pipe, the second connecting pipe extends into the communicating hole, the second connecting pipe is sleeved with a mounting pipe fixed to the top wall of the oil pump body, and a plurality of sets of directional holes are formed in the top of the mounting pipe. And a plurality of groups of directional rods clamped with the directional holes are fixed on the outer wall of the first connecting pipe. According to the utility model, the second connecting pipe is inserted into the inner cavity of the communicating hole, and the plurality of groups of orientation rods are aligned to the position of the orientation hole and are mutually clamped, so that the positions of the first connecting pipe and the second connecting pipe can be quickly aligned, and the pressure switch main body and the oil pump main body are positioned in the same plane.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure switches, in particular to a pressure switch for controlling the start and stop of an oil pump. Background Art

[0002] The working principle of the oil pump pressure switch is: when the measured pressure exceeds the rated value, the free end of the elastic element is displaced, pushing the switch element directly or after comparison, changing the on-off state of the switch element to achieve the purpose of controlling the measured pressure.

[0003] When in use, the pressure switch and the oil pump are usually connected by threads, but it consumes a lot of force and is difficult to disassemble and assemble. It is difficult to twist the pressure switch and the oil pump to the same plane. For this reason, the utility model proposes a pressure switch for controlling the start and stop of the oil pump, which is different from the prior art, to solve the above technical problems. Utility Model Content

[0004] In order to improve the above-mentioned problem that it is difficult to twist the pressure switch and the oil pump to the same plane, the utility model provides a pressure switch for controlling the start and stop of the oil pump.

[0005] The utility model provides a pressure switch for controlling the start and stop of an oil pump, which adopts the following technical solution:

[0006] A pressure switch for controlling the start and stop of an oil pump comprises an oil pump body, the top of the oil pump body is connected to a second connecting pipe, a pressure switch body is arranged above the oil pump body, the bottom of the pressure switch body is connected to a first connecting pipe, a connecting hole is provided on the bottom wall of the first connecting pipe, the second connecting pipe extends to the inside of the connecting hole, a mounting pipe fixed to the top wall of the oil pump body is sleeved on the outside of the second connecting pipe, a plurality of directional holes are provided at the top of the mounting pipe, and a plurality of directional rods engaged with the directional holes are fixed to the outer wall of the first connecting pipe.

[0007] By adopting the above technical solution, the second connecting tube is inserted into the inner cavity of the connecting hole, and multiple sets of directional rods are aligned with the positions of the directional holes and engaged with each other, so that the positions of the first connecting tube and the second connecting tube can be quickly aligned, so that the pressure switch body and the oil pump body are in the same plane.

[0008] Optionally, a second sealing ring is fixed to the inner cavity of the communicating hole, and a plurality of groups of limiting strips in contact with the second sealing ring are evenly fixed to the outer wall of the second connecting pipe.

[0009] Optionally, the bottom portion of the outer wall of the second connecting tube is wrapped with a first sealing ring that contacts the bottom portion of the first connecting tube.

[0010] By adopting the above technical solution, the friction between the second connecting pipe and the second sealing ring can be increased under the action of multiple groups of limit strips, and the sealing can be ensured with the cooperation of the first sealing ring, thereby meeting the needs of subsequent use.

[0011] Optionally, a plurality of groups of limit blocks are fixed at the lower end of the outer wall of the first connecting tube, and a plurality of groups of threaded components matching the limit blocks are installed inside the mounting tube.

[0012] Optionally, the threaded assembly includes a nut, which is fixedly embedded in the interior of the mounting tube, a bolt is threaded through the inner cavity of the nut, the end of the bolt is rotatably connected to a limiting plate via a bearing, and a limiting hole matching the limiting block is opened at the upper end of the limiting plate.

[0013] Optionally, the longitudinal section of the limit block is configured to be wedge-shaped.

[0014] By adopting the above technical solution, screwing multiple sets of bolts drives the limit plate to move and allows the limit block to gradually extend into the inner cavity of the limit hole and complete the engagement, which can compress the height of the first sealing ring and improve the sealing effect.

[0015] In summary, the present invention has at least one of the following beneficial effects:

[0016] During the plugging process, the multiple groups of directional rods are aligned with the positions of the directional holes and are engaged with each other, so that the positions of the first connecting pipe and the second connecting pipe can be quickly aligned, so that the pressure switch body and the oil pump body are in the same plane;

[0017] Tightening multiple sets of bolts drives the limit plate to move toward the first connecting pipe, so that the limit block gradually extends into the inner cavity of the limit hole and completes the engagement. Under the action of the wedge-shaped structure of the limit block, the height of the first sealing ring can be compressed to improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the first connecting pipe, the second connecting pipe and the mounting pipe of the utility model;

[0020] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0021] Figure 4 This is a front view structural diagram of the first connecting pipe and the mounting pipe of the utility model.

[0022] In the figure: 1. pressure switch body; 2. first connecting pipe; 3. oil pump body; 4. second connecting pipe; 5. directional rod; 6. bolt; 7. nut; 8. first sealing ring; 9. limit plate; 10. limit hole; 11. mounting pipe; 12. limit block; 13. connecting hole; 14. directional hole; 15. limit strip; 16. second sealing ring. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-4 The utility model is described in further detail.

[0024] Please refer to the attached figure in the instruction manual Figure 1 and 2 The utility model provides an embodiment: a pressure switch for controlling the start and stop of an oil pump, comprising an oil pump body 3, a second connecting pipe 4 is connected to the top of the oil pump body 3, the top position of the second connecting pipe 4 is set to an opening shape, a pressure switch body 1 is set above the oil pump body 3, a first connecting pipe 2 is connected to the bottom of the pressure switch body 1, the bottom position of the first connecting pipe 2 is set to an opening shape, a connecting hole 13 is opened on the bottom wall of the first connecting pipe 2, the second connecting pipe 4 extends to the inside of the connecting hole 13, a mounting pipe 11 fixed to the top wall of the oil pump body 3 is sleeved on the outside of the second connecting pipe 4, the top position of the mounting pipe 11 is set to an opening shape, a plurality of directional holes 14 are opened at the top position of the mounting pipe 11, and a plurality of directional rods 5 engaged with the directional holes 14 are fixed to the outer wall of the first connecting pipe 2.

[0025] Insert the second connecting tube 4 into the inner cavity of the connecting hole 13. When inserting, align the multiple groups of directional rods 5 with the positions of the directional holes 14 and engage them with each other, so that the positions of the first connecting tube 2 and the second connecting tube 4 can be quickly aligned, so that the pressure switch body 1 and the oil pump body 3 are in the same plane.

[0026] Please refer to the attached figure in the instruction manual Figure 1 , 2 3. A second sealing ring 16 is fixed to the inner cavity of the connecting hole 13. The second sealing ring 16 is a rubber ring. The longitudinal section of the second sealing ring 16 is set to an inverted U shape. Multiple groups of limit strips 15 in contact with the second sealing ring 16 are evenly fixed to the outer wall of the second connecting tube 4. The longitudinal section of the limit strips 15 is set to a semicircular shape. The bottom position of the outer wall of the second connecting tube 4 is wrapped with a first sealing ring 8 in contact with the bottom wall position of the first connecting tube 2. The first sealing ring 8 is a rubber ring. The second connecting tube 4 is inserted into the inner cavity of the connecting hole 13. The friction between the second connecting tube 4 and the second sealing ring 16 can be increased under the action of multiple groups of limit strips 15, and the sealing can be guaranteed with the cooperation of the first sealing ring 8, thereby meeting the subsequent use.

[0027] Please refer to the attached figure in the instruction manual Figure 1 ,2 A plurality of groups of stop blocks 12 are fixed at the lower end of the outer wall of the first connecting tube 2. The longitudinal section of the stop block 12 is set to be wedge-shaped. The top wall of the stop block 12 is set to be inclined. A plurality of groups of threaded components matching the stop block 12 are installed inside the mounting tube 11. The threaded components include a nut 7, which is fixedly embedded inside the mounting tube 11. A bolt 6 is threadedly penetrated through the inner cavity of the nut 7. A cross groove is provided on the outer wall of the bolt 6. The longitudinal section of the outer wall of the bolt 6 is set to be a regular hexagon for easy screwing. The end of the bolt 6 is rotatably connected to the stop plate 9 through a bearing. A stop hole 10 matching the stop block 12 is provided on the upper end of the stop plate 9. The top position of the stop hole 10 is below the top position of the stop block 12.

[0028] By screwing multiple groups of bolts 6, under the action of nuts 7, the bolts 6 can drive the limit plate 9 to move toward the side of the first connecting pipe 2 during the rotation process, so that the limit block 12 gradually extends into the inner cavity of the limit hole 10 and completes the engagement. Under the action of the wedge-shaped structure of the limit block 12, the height of the first sealing ring 8 can be compressed to improve the sealing effect.

[0029] Working principle: When using the pressure switch for controlling the start and stop of the oil pump, the second connecting tube 4 is inserted into the inner cavity of the connecting hole 13. Under the action of multiple sets of limit strips 15, the friction between the second connecting tube 4 and the second sealing ring 16 can be increased, and with the cooperation of the first sealing ring 8, the sealing can be guaranteed to meet the subsequent use. When plugging in, align the multiple sets of directional rods 5 with the position of the directional hole 14 and make them engage with each other, so that the positions of the first connecting tube 2 and the second connecting tube 4 can be quickly aligned, so that the pressure switch body 1 and the oil pump body 3 are in the same plane.

[0030] When the second connecting pipe 4 is inserted into the inner cavity of the connecting hole 13, multiple groups of bolts 6 are screwed. Under the action of the nuts 7, the bolts 6 can drive the limit plate 9 to move toward the side of the first connecting pipe 2 during the rotation, so that the limit block 12 gradually extends into the inner cavity of the limit hole 10 and completes the engagement. Under the action of the wedge-shaped structure of the limit block 12, the height of the first sealing ring 8 can be compressed to improve the sealing effect.

[0031] The standard parts used in the present utility model document can all be purchased from the market. The various components in the present utility model document can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0032] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A pressure switch for controlling the start and stop of an oil pump, comprising an oil pump body (3), characterized in that: The top of the oil pump body (3) is connected to a second connecting pipe (4), a pressure switch body (1) is arranged above the oil pump body (3), the bottom of the pressure switch body (1) is connected to a first connecting pipe (2), a connecting hole (13) is provided on the bottom wall of the first connecting pipe (2), the second connecting pipe (4) extends into the inside of the connecting hole (13), a mounting pipe (11) fixed to the top wall of the oil pump body (3) is sleeved on the outside of the second connecting pipe (4), a plurality of directional holes (14) are provided at the top of the mounting pipe (11), and a plurality of directional rods (5) engaged with the directional holes (14) are fixed to the outer wall of the first connecting pipe (2).

2. A pressure switch for controlling the start and stop of an oil pump according to claim 1, characterized in that: A second sealing ring (16) is fixed to the inner cavity of the communication hole (13), and a plurality of groups of limiting strips (15) in contact with the second sealing ring (16) are evenly fixed to the outer wall of the second connecting pipe (4).

3. A pressure switch for controlling the start and stop of an oil pump according to claim 1, characterized in that: A plurality of groups of limit blocks (12) are fixed at the lower end of the outer wall of the first connecting tube (2), and a plurality of groups of threaded components matching the limit blocks (12) are installed inside the mounting tube (11).

4. A pressure switch for controlling the start and stop of an oil pump according to claim 3, characterized in that: The threaded assembly comprises a nut (7), the nut (7) being fixedly embedded in the interior of a mounting tube (11), a bolt (6) being threadedly passed through the inner cavity of the nut (7), the end of the bolt (6) being rotatably connected to a limit plate (9) via a bearing, and a limit hole (10) matching with a limit block (12) being provided at an upper end of the interior of the limit plate (9).

5. A pressure switch for controlling the start and stop of an oil pump according to claim 3, characterized in that: The longitudinal section of the limiting block (12) is arranged to be wedge-shaped.

6. A pressure switch for controlling the start and stop of an oil pump according to claim 1, characterized in that: The bottom portion of the outer wall of the second connecting tube (4) is wrapped with a first sealing ring (8) which contacts the bottom portion of the first connecting tube (2).

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