Mechanical seal of submersible slurry pump

Abstract

The utility model discloses a mechanical seal of a submersible slurry pump. The mechanical seal comprises a pump shaft body, a sealing mechanism is arranged on the outer side of the pump shaft body, the sealing mechanism comprises a moving ring, a spring body, a transmission ring and an elastic check ring for a shaft, the moving ring is in sliding connection with the pump shaft body, and the elastic check ring for the shaft is connected with the pump shaft body in a clamped mode; an adjusting mechanism is arranged on the outer side of the moving ring, the adjusting mechanism is composed of a first lug plate, a threaded rod, a fastening nut and a second lug plate, the threaded rod is in threaded connection with the fastening nut, and the threaded rod is in sliding connection with the second lug plate; the outer side of the pump shaft body is connected with an L-shaped sealing gasket in a sliding mode. According to the mechanical seal of the submersible slurry pump, the movable ring can move on the outer side of the static ring, installation is convenient, the transmission mode is stable, the sealing ring is arranged on the inner side of the movable ring, the sealing ring has the sealing effect, the spring body has the buffering effect, and the problem that the spring is blocked by slurry media is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to submersible slurry pump technical field, concretely is a kind of submersible slurry pump mechanical seal. BACKGROUND

[0002] Submersible slurry pump is a kind of equipment for conveying abrasive solid particle slurry, and the working principle of submersible slurry pump is mainly based on centrifugal force and energy conversion. During operation, the motor drives the pump shaft and impeller to rotate through the shaft coupling or other transmission devices. When the impeller rotates at high speed, a low-pressure area is formed at its center, while a high-pressure area is formed at its periphery. Under the action of pressure difference, the slurry containing solid particles is sucked into the center of the impeller, and then, with the rotation of the impeller, the slurry is thrown to the periphery of the impeller under the action of centrifugal force, and is discharged from the outlet of the pump at a high speed and pressure. The submersible slurry pump mechanical seal is an important part of the submersible slurry pump, and plays an important role in ensuring the normal operation of the pump and preventing medium leakage.

[0003] However, the common mechanical seal is not stable in transmission during use, and the slurry medium can enter the sealing structure, causing spring blockage problem, and the actual effect is not good enough, so there is still room for improvement.

[0004] Therefore, we propose a submersible slurry pump mechanical seal to solve the problems raised in the above. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a submersible slurry pump mechanical seal to solve the problem of the common mechanical seal in use, which is not stable in transmission, and the slurry medium can enter the sealing structure, causing spring blockage problem, and the actual effect is not good enough, so there is still room for improvement.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a submersible slurry pump mechanical seal, comprising: a pump shaft body;

[0007] Further comprising:

[0008] The outer side of the pump shaft body is provided with a sealing mechanism, which comprises a moving ring, a spring body, a transmission ring and an elastic retaining ring for shaft, the moving ring is slidably connected with the pump shaft body, and the elastic retaining ring for shaft is snap-fit connected with the pump shaft body;

[0009] The outer side of the moving ring is provided with an adjusting mechanism, which is composed of a first ear plate, a threaded rod, a locking nut and a second ear plate, the threaded rod is threadedly connected with the locking nut, and the threaded rod is slidably connected with the second ear plate.

[0010] Preferably, the outer side of the pump shaft body is slidably connected with an L-shaped sealing gasket, and the L-shaped sealing gasket is connected with the static ring in a clamping manner, and the outer side of the static ring is slidably connected with a moving ring.

[0011] Preferably, the inner side of the moving ring is provided with a first slot, and the first slot is provided with a sealing ring in the inner side, and the sealing ring is slidably connected with the pump shaft body.

[0012] Preferably, the outer side of the moving ring is provided with a first ear plate, and the first ear plate is symmetric about the horizontal central axis of the moving ring, and the first ear plate, the threaded rod and the fastening nut are one-to-one corresponding.

[0013] Preferably, the outer side of the moving ring is provided with a spring body, and the left end of the spring body is fixedly connected with a transmission ring, and the outer side of the transmission ring is provided with a second ear plate, and the second ear plate is symmetric about the horizontal central axis of the transmission ring.

[0014] Preferably, the inner side of the transmission ring is provided with a second slot, and the second slot is arranged in an array, and the inner side of the second slot is threadedly connected with an internal hexagonal set screw.

[0015] Preferably, the inner side of the transmission ring is provided with a connecting groove, and the connecting groove is slidably connected with the moving ring, and the transmission ring is slidably connected with the pump shaft body.

[0016] Compared with the prior art, the beneficial effects of the utility model are that the moving ring can move outside the static ring, the installation is convenient, the transmission mode is relatively stable, the inner side of the moving ring is provided with a sealing ring, the sealing ring has a sealing effect, the spring body has a buffering effect, and the problem of spring blockage caused by slag slurry medium is overcome.

[0017] 1. The L-shaped sealing gasket, the static ring and the moving ring are arranged, the static ring is arranged on the outer side of the pump shaft body, the moving ring can move outside the static ring, the installation is convenient, and the transmission mode is relatively stable.

[0018] 2. The moving ring, the sealing ring and the spring body are arranged, the moving ring can slide in the transmission ring, the inner side of the moving ring is provided with the sealing ring, the sealing ring has a sealing effect, the spring body has a buffering effect, and the problem of spring blockage caused by slag slurry medium is overcome.

[0019] 3. The threaded rod, the fastening nut and the second ear plate are arranged, the spring body has an elastic life, the threaded rod and the fastening nut can protect the spring body through the first ear plate and the second ear plate, and the spring body is prevented from being lengthened. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an explosion structure schematic view of the utility model;

[0021] Figure 2 It is a whole structure schematic view of the utility model;

[0022] Figure 3 It is a transmission ring cutting structure schematic view of the utility model;

[0023] Figure 4 It is a mobile ring, sealing ring and spring body explosion structure schematic view of the utility model.

[0024] In the drawing: 1, L-shaped sealing gasket; 2, static ring; 3, mobile ring; 31, first slot; 32, first ear plate; 33, threaded rod; 34, fastening nut; 4, sealing ring; 5, spring body; 6, transmission ring; 61, second ear plate; 62, second slot; 63, connecting groove; 7, elastic baffle ring for shaft; 8, internal hexagon lock screw; 9, pump shaft body. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be apparently and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts fall within the protection scope of the utility model. DETAILED DESCRIPTION

[0026] The embodiment is a mechanical seal of a submersible slurry pump.

[0027] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the L-shaped sealing gasket 1 is arranged outside the pump shaft body 9, the L-shaped sealing gasket 1 is clamped and connected with the static ring 2, the static ring 2 is arranged outside the pump shaft body 9, the outside of the static ring 2 is slidably connected with the mobile ring 3, the inside of the mobile ring 3 is provided with the first slot 31, the inside of the first slot 31 is provided with the sealing ring 4, the sealing ring 4 is slidably connected with the pump shaft body 9, the outside of the mobile ring 3 is provided with the first ear plate 32, the first ear plate 32 is symmetric about the horizontal central axis of the mobile ring 3, the first ear plate 32, the threaded rod 33 and the fastening nut 34 are one-to-one corresponding, the threaded rod 33 is threadedly connected with the fastening nut 34, and the threaded rod 33 is slidably connected with the second ear plate 61.

[0028] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the outer side of the moving ring 3 is provided with a spring body 5, the left end of the spring body 5 is fixedly connected with a transmission ring 6, the outer side of the transmission ring 6 is provided with a second lug plate 61, the second lug plate 61 is symmetric about the horizontal central axis of the transmission ring 6, the inside of the transmission ring 6 is provided with a second slot 62, the second slot 62 is arranged in an array, the inside of the second slot 62 is threadedly connected with a hexagonal close screw 8, the inside of the transmission ring 6 is provided with a connecting groove 63, the connecting groove 63 is slidably connected with the moving ring 3, the transmission ring 6 is slidably connected with a pump shaft body 9, and the shaft elastic retainer 7 is clampedly connected with the pump shaft body 9.

[0029] It should be noted that the shaft elastic retainer 7 can prevent the bearing or other components from moving axially on the shaft, thereby ensuring the stable operation of the equipment, can fix the parts, has the advantages of quick connection and disconnection, stable connection and convenient maintenance.

[0030] In use, first, the L-shaped sealing gasket 1 is sleeved on the outer side of the pump shaft body 9, then the L-shaped sealing gasket 1 is connected with the static ring 2, then the moving ring 3 is slidably connected with the static ring 2, the inside of the moving ring 3 is provided with the sealing ring 4, the sealing ring 4 has a sealing effect, then the spring body 5 is sleeved on the outer side of the moving ring 3, then the transmission ring 6 is slidably connected with the pump shaft body 9, and the threaded rod 33 is slidably connected with the second lug plate 61, at this time, the moving ring 3 is slidably connected with the connecting groove 63, then the fastening nut 34 is rotated, and the fastening nut 34 is threadedly connected with the threaded rod 33, at this time, the spring body 5 is arranged between the moving ring 3 and the transmission ring 6, and the first lug plate 32 and the second lug plate 61 protect the spring body 5 and prevent the spring body 5 from elongating, and finally the shaft elastic retainer 7 is clamped on the outer side of the pump shaft body 9, overcoming the problem of spring blockage caused by slurry medium.

[0031] In addition, the hexagonal close screw 8 is threadedly connected in the second slot 62, and when the hexagonal close screw 8 is closely attached to the moving ring 3, the moving ring 3 and the transmission ring 6 can be fixedly connected.

[0032] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, the standard parts used in the utility model can be purchased from the market, the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0033] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A submersible slurry pump mechanical seal, comprising: The pump shaft body (9) is provided with a sealing mechanism on the outer side, the sealing mechanism comprises a moving ring (3), a spring body (5), a transmission ring (6) and an elastic shaft collar (7), the moving ring (3) is in sliding connection with the pump shaft body (9), and the elastic shaft collar (7) is in clamping connection with the pump shaft body (9); The outer side of the moving ring (3) is provided with an adjusting mechanism, the adjusting mechanism is composed of a first ear plate (32), a threaded rod (33), a fastening nut (34) and a second ear plate (61), the threaded rod (33) is in threaded connection with the fastening nut (34), and the threaded rod (33) is in sliding connection with the second ear plate (61). The outer side of the pump shaft body (9) is in sliding connection with an L-shaped sealing gasket (1), the L-shaped sealing gasket (1) is in clamping connection with the static ring (2), and the outer side of the static ring (2) is in sliding connection with the moving ring (3). The inner side of the moving ring (3) is provided with a first slot (31), the inner side of the first slot (31) is provided with a sealing ring (4), and the sealing ring (4) is in sliding connection with the pump shaft body (9).

2. A mechanical seal for a submersible slurry pump as claimed in claim 1, wherein: The outer side of the moving ring (3) is provided with a first ear plate (32), the first ear plate (32) is symmetrical about the horizontal central axis of the moving ring (3), and the first ear plate (32), the threaded rod (33) and the fastening nut (34) are in one-to-one correspondence.

3. A mechanical seal for a submersible slurry pump as claimed in claim 2, wherein: The outer side of the moving ring (3) is provided with a spring body (5), the left end of the spring body (5) is fixedly connected with the transmission ring (6), the outer side of the transmission ring (6) is provided with a second ear plate (61), the second ear plate (61) is symmetrical about the horizontal central axis of the transmission ring (6).

4. A mechanical seal for a submersible slurry pump as claimed in claim 3, wherein: The inner side of the transmission ring (6) is provided with a second slot (62), the second slot (62) is in array distribution, and the inner side of the second slot (62) is in threaded connection with an internal hexagonal set screw (8).

5. A mechanical seal for a submersible slurry pump as claimed in claim 2, wherein: The inner side of the transmission ring (6) is provided with a connecting groove (63), the inner side of the connecting groove (63) is in sliding connection with the moving ring (3), and the transmission ring (6) is in sliding connection with the pump shaft body (9).

6. A mechanical seal for a submersible slurry pump as claimed in claim 5 wherein: ​ 7. A mechanical seal for a submersible slurry pump as claimed in claim 6, characterised in that: ​

Images