Water leakage prevention device for fire pump valve

Abstract

The utility model relates to the technical field of fire-fighting equipment, in particular to a water leakage prevention device for a fire-fighting water pump valve, which comprises a fire-fighting water pump connecting pipe, a valve connecting pipe is arranged on one side of the fire-fighting water pump connecting pipe, and flange plates are fixed at opposite ends of the fire-fighting water pump connecting pipe and the valve connecting pipe. The flange plate close to the fire pump connecting pipe is sleeved with a first sealing sleeve, a second sealing sleeve is arranged at one end of the first sealing sleeve, external threads are arranged on the outer wall of the first sealing sleeve, and internal threads matched with the external threads on the outer wall of the first sealing sleeve are arranged on the inner wall of the second sealing sleeve. Two locking mechanisms are arranged on the side, away from the second sealing sleeve, of the first sealing sleeve, an O-shaped sealing ring is arranged in the second sealing sleeve, clamping grooves matched with the O-shaped sealing ring are formed in the first sealing sleeve and the second sealing sleeve correspondingly, a sealing gasket is fixed to the side, away from the locking mechanisms, of the first sealing sleeve, and the O-shaped sealing ring is sleeved with the sealing gasket; the leakage-proof valve improves the leakage-proof effect and is convenient to disassemble and replace.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting equipment technical field, concretely relates to a fire water pump valve anti -leakage device. BACKGROUND

[0002] Fire water pump refers to special fire water pump or ordinary water pump reaching national standard. When fire water pump valve is connected with fire water pump, it is connected through flange bolt. Flange is easy to cause leakage at flange connecting part due to loosening after long-term use. CONTENT

[0003] In view of the problems in the prior art, the utility model provides a fire water pump valve anti -leakage device.

[0004] The utility model discloses a fire water pump valve anti -leakage device, including fire water pump connecting pipe, one side of fire water pump connecting pipe is equipped with valve connecting pipe, the end of fire water pump connecting pipe and valve connecting pipe opposite is fixed with flange, the flange of close fire water pump connecting pipe is covered with first sealing sleeve, one end of first sealing sleeve is equipped with second sealing sleeve, the outer wall of first sealing sleeve is equipped with outer thread, the inner wall of second sealing sleeve is equipped with the inner thread of second sealing sleeve with the outer thread of first sealing sleeve adaptation, one side of first sealing sleeve away from second sealing sleeve is equipped with two locking mechanism, the inside of second sealing sleeve is equipped with O type sealing ring, the inside of first sealing sleeve, second sealing sleeve is equipped with the clamping groove of O type sealing ring adaptation, the fixed sealing pad of one side of first sealing sleeve away from locking mechanism, the sealing pad cover is in O type sealing ring outside.

[0005] Through adopting above-mentioned technical scheme, the first sealing sleeve is covered on the flange of fire water pump connecting pipe end part, the O type sealing ring is arranged in the second sealing sleeve, and the second sealing sleeve is covered on the flange of valve connecting pipe end part, rotates the second sealing sleeve and tightens, realizes the connection of first sealing sleeve and second sealing sleeve, when the second sealing sleeve rotates, first sealing sleeve and second sealing sleeve can extrude O type sealing ring, and O type sealing ring deforms and tightly sticks to the connecting part of two flanges, realizes first -class leak protection, first sealing sleeve tightly sticks to the flange of fire water pump connecting pipe end part, second sealing sleeve tightly sticks to the flange of valve connecting pipe end part, and sealing pad tightly sticks to O type sealing ring, realizes second -class leak protection, improves leak protection effect, when needing to replace O type sealing ring, reversely rotates second sealing sleeve, can unload second sealing sleeve, and the replacement of O type sealing ring is convenient.

[0006] Specifically, the locking mechanism includes a connecting block, an adjusting bolt, and a locking block. The connecting block is connected to the first sealing sleeve. The connecting block has a screw hole that matches the adjusting bolt. The end of the adjusting bolt is rotatably connected to the locking block. Two guide rods are fixed on the side of the locking block near the connecting block, and both guide rods pass through the connecting block.

[0007] By adopting the above technical solution, rotating the adjusting bolt and making the locking block fit tightly against the fire pump connection pipe, the stability of the first sealing sleeve can be improved.

[0008] Specifically, a protective pad is fixed on the side of the card block away from the connecting block.

[0009] By adopting the above technical solution, the protective pad can protect the fire pump connection pipe and prevent the jamming block from damaging the fire pump connection pipe.

[0010] Specifically, a stop block is fixed to the side wall of the second sealing sleeve, a limiting bolt is provided on one side of the second sealing sleeve, the stop block is provided with a screw hole adapted to the limiting bolt, and the outer wall of the first sealing sleeve is provided with a slot adapted to the limiting bolt.

[0011] By adopting the above technical solution, after tightening the second sealing sleeve, the limiting bolt is rotated and the end of the limiting bolt is inserted into the slot on the outer wall of the first sealing sleeve, which can prevent the second sealing sleeve from loosening.

[0012] Specifically, the outer wall of the second sealing sleeve is integrally formed with multiple anti-slip protrusions.

[0013] By adopting the above technical solution, the anti-slip protrusions can increase the friction between the hand and fingers when the second sealing sleeve is held and rotated, which is conducive to rotating the second sealing sleeve.

[0014] The beneficial effects of this utility model are:

[0015] (1) The fire pump valve anti-leakage device of this utility model is to put the first sealing sleeve on the flange at the end of the fire pump connecting pipe, place the O-ring in the second sealing sleeve, and put the second sealing sleeve on the flange at the end of the valve connecting pipe. Rotating the second sealing sleeve and tightening it realizes the connection between the first sealing sleeve and the second sealing sleeve. When the second sealing sleeve rotates, the first sealing sleeve and the second sealing sleeve can squeeze the O-ring. The O-ring deforms and fits tightly against the connection of the two flanges, realizing the first level of leakage prevention. The first sealing sleeve fits tightly against the flange at the end of the fire pump connecting pipe, the second sealing sleeve fits tightly against the flange at the end of the valve connecting pipe, and the sealing gasket fits tightly against the O-ring, realizing the second level of leakage prevention and improving the leakage prevention effect. When the O-ring needs to be replaced, the second sealing sleeve can be removed by rotating the second sealing sleeve in the opposite direction, which facilitates the replacement of the O-ring.

[0016] (2) The fire pump valve anti-leakage device of the present invention, by rotating the adjusting bolt, the locking block is tightly attached to the fire pump connecting pipe, which can improve the stability of the first sealing sleeve. After tightening the second sealing sleeve, the limiting bolt is rotated and the end of the limiting bolt is inserted into the slot on the outer wall of the first sealing sleeve, which can prevent the second sealing sleeve from loosening. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 For the present utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0020] Figure 3 This is a cross-sectional view of the fire pump connecting pipe, flange, first sealing sleeve and second sealing sleeve of this utility model.

[0021] In the diagram: 1. Fire pump connecting pipe; 2. First sealing sleeve; 3. Second sealing sleeve; 4. Valve connecting pipe; 5. Locking mechanism; 50. Connecting block; 51. Adjusting bolt; 52. Guide rod; 53. Clamping block; 54. Protective pad; 6. Flange; 7. Anti-slip protrusion; 8. O-ring seal; 9. Sealing gasket; 10. Stop block; 11. Limit bolt. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] To prevent leakage at the flange 6 connection, as one embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3As shown, the present invention discloses a fire pump valve anti-leakage device, comprising a fire pump connecting pipe 1, a valve connecting pipe 4 on one side of the fire pump connecting pipe 1, flanges 6 fixed at the opposite ends of the fire pump connecting pipe 1 and the valve connecting pipe 4, and the two flanges 6 connected by bolts and nuts (existing technology), a first sealing sleeve 2 fitted on the flange 6 near the fire pump connecting pipe 1, a second sealing sleeve 3 at one end of the first sealing sleeve 2, an external thread on the outer wall of the first sealing sleeve 2, an internal thread on the inner wall of the second sealing sleeve 3 that matches the external thread on the outer wall of the first sealing sleeve 2, two locking mechanisms 5 on the side of the first sealing sleeve 2 away from the second sealing sleeve 3, an O-ring 8 inside the second sealing sleeve 3, and grooves in both the first sealing sleeve 2 and the second sealing sleeve 3 that match the O-ring 8, and a sealing gasket 9 fixed to the side of the first sealing sleeve 2 away from the locking mechanism 5 by adhesive, the sealing gasket 9 being fitted over the O-ring 8.

[0024] In use, the first sealing sleeve 2 is placed on the flange 6 at the end of the fire pump connecting pipe 1, the O-ring 8 is placed in the second sealing sleeve 3, and the second sealing sleeve 3 is placed on the flange 6 at the end of the valve connecting pipe 4. The second sealing sleeve 3 is rotated and tightened to connect the first sealing sleeve 2 and the second sealing sleeve 3. When the second sealing sleeve 3 is rotated, the first sealing sleeve 2 and the second sealing sleeve 3 can squeeze the O-ring 8. The O-ring 8 deforms and fits tightly against the connection of the two flanges 6, achieving the first level of leakage prevention. The first sealing sleeve 2 fits tightly against the flange 6 at the end of the fire pump connecting pipe 1, the second sealing sleeve 3 fits tightly against the flange 6 at the end of the valve connecting pipe 4, and the sealing gasket 9 fits tightly against the O-ring 8, achieving the second level of leakage prevention and improving the leakage prevention effect. When the O-ring 8 needs to be replaced, the second sealing sleeve 3 can be removed by rotating it in the opposite direction, which facilitates the replacement of the O-ring 8.

[0025] To improve the stability of the first sealing sleeve 2, for example, such as Figure 2 As shown, the locking mechanism 5 includes a connecting block 50, an adjusting bolt 51, and a locking block 53. The connecting block 50 is welded to the first sealing sleeve 2. The connecting block 50 is provided with a screw hole that matches the adjusting bolt 51. The end of the adjusting bolt 51 is rotatably connected to the locking block 53. Two guide rods 52 are welded and fixed on the side of the locking block 53 near the connecting block 50. Both guide rods 52 pass through the connecting block 50.

[0026] When in use, rotating the adjusting bolt 51 will cause the locking block 53 to fit tightly against the fire pump connecting pipe 1, which can improve the stability of the first sealing sleeve 2.

[0027] To protect the fire pump connection pipe 1, for example, such as Figure 2As shown, the side of the card block 53 away from the connecting block 50 is fixed with a protective pad 54 by adhesive.

[0028] To prevent the second sealing sleeve 3 from loosening, for example, such as Figure 2 As shown, a stop block 10 is welded and fixed to the side wall of the second sealing sleeve 3, and a limiting bolt 11 is provided on one side of the second sealing sleeve 3. The stop block 10 is provided with a screw hole that matches the limiting bolt 11, and the outer wall of the first sealing sleeve 2 is provided with a slot that matches the limiting bolt 11.

[0029] When in use, after tightening the second sealing sleeve 3, rotate the limiting bolt 11. The end of the limiting bolt 11 is inserted into the slot on the outer wall of the first sealing sleeve 2, which can prevent the second sealing sleeve 3 from loosening.

[0030] To facilitate tightening the second sealing sleeve 3, for example, as shown... Figure 1 As shown, the outer wall of the second sealing sleeve 3 is integrally formed with multiple anti-slip protrusions 7.

[0031] In use, the first sealing sleeve 2 is fitted onto the flange 6 at the end of the fire pump connecting pipe 1. Rotating the adjusting bolt 51 ensures the protective gasket 54 is tightly against the fire pump connecting pipe 1, improving the stability of the first sealing sleeve 2. The O-ring 8 is placed inside the second sealing sleeve 3, which is then fitted onto the flange 6 at the end of the valve connecting pipe 4. Rotating and tightening the second sealing sleeve 3 connects the first sealing sleeve 2 and the second sealing sleeve 3. When the second sealing sleeve 3 rotates, the first sealing sleeve 2 and the second sealing sleeve 3 compress the O-ring 8, causing it to deform and adhere tightly to the connection point of the two flanges 6, achieving the first level of leak prevention. The first sealing sleeve 2 adheres tightly to the flange 6 at the end of the fire pump connecting pipe 1, the second sealing sleeve 3 adheres tightly to the flange 6 at the end of the valve connecting pipe 4, and the sealing gasket 9 adheres tightly to the O-ring 8, achieving the second level of leak prevention and improving the leak prevention effect.

[0032] After tightening the second sealing sleeve 3, rotate the limiting bolt 11. The end of the limiting bolt 11 is inserted into the slot on the outer wall of the first sealing sleeve 2, which can prevent the second sealing sleeve 3 from loosening.

[0033] When the O-ring 8 needs to be replaced, rotate the limit bolt 11 in the opposite direction and rotate the second sealing sleeve 3 in the opposite direction to remove the second sealing sleeve 3, which makes it convenient to replace the O-ring 8.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents. Contents not described in detail in this utility model are considered prior art known to those skilled in the art.

Claims

1. A water leakage preventing device for a fire pump valve, characterized by, The utility model provides a fire pump connecting pipe (1) is provided with valve connecting pipe (4) on one side, and the end of fire pump connecting pipe (1) and valve connecting pipe (4) is fixed with flange (6) respectively, and the flange (6) of fire pump connecting pipe (1) is provided with first sealing sleeve (2), and one end of first sealing sleeve (2) is provided with second sealing sleeve (3), and the outer wall of first sealing sleeve (2) is provided with external thread, and the inner wall of second sealing sleeve (3) is provided with internal thread matched with the external thread of first sealing sleeve (2), and the side of first sealing sleeve (2) away from second sealing sleeve (3) is provided with two locking mechanisms (5), and second sealing sleeve (3) is provided with O type sealing ring (8), and first sealing sleeve (2) and second sealing sleeve (3) are provided with clamping groove matched with O type sealing ring (8), and the side of first sealing sleeve (2) away from locking mechanism (5) is fixed with sealing gasket (9), and sealing gasket (9) is sleeved on the outside of O type sealing ring (8).

2. The water leakage prevention device for a fire pump valve according to claim 1, characterized in that, The locking mechanism (5) includes a connecting block (50), an adjusting bolt (51) and a clamping block (53), the connecting block (50) is connected with the first sealing sleeve (2), the connecting block (50) is provided with a screw hole matched with the adjusting bolt (51), the end of the adjusting bolt (51) is rotatably connected with the clamping block (53), the side of the clamping block (53) close to the connecting block (50) is fixed with two guide rods (52), and the two guide rods (52) penetrate through the connecting block (50).

3. The water-tight device for a fire pump valve according to claim 2, wherein The side of the clamping block (53) away from the connecting block (50) is fixed with a protective pad (54).

4. The water-tight device for a fire pump valve according to claim 1, wherein The side wall of the second sealing sleeve (3) is fixed with a stop block (10), one side of the second sealing sleeve (3) is provided with a limiting bolt (11), the stop block (10) is provided with a screw hole matched with the limiting bolt (11), and the outer wall of the first sealing sleeve (2) is provided with a slot matched with the limiting bolt (11).

5. The water-tight device for a fire pump valve according to claim 1, wherein The outer wall of the second sealing sleeve (3) is integrally formed with a plurality of anti-skid protrusions (7).

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