Stable mechanical seal for water pump

Abstract

The utility model discloses a stable mechanical seal for a water pump, which belongs to the technical field of mechanical seals, comprises a movable cover, and is characterized in that one side of the movable cover is provided with a first inner receiving groove, a movable ring is arranged in the first inner receiving groove, and the other side of the movable cover is provided with a fixed cover; a fixed ring is fixedly arranged in the center of the interior of the fixed cover, a spring is arranged between the fixed cover and the movable cover, the spring is in a compressed state, a static ring is arranged on the side, away from the fixed cover, of the movable ring, the movable ring is attached to the static ring, and the sealing effect and the service life of the mechanical seal are effectively guaranteed.

Description

TECHNICAL FIELD

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

[0002] Water pump is the common equipment in industrial and agricultural activities, in its working process, the rotating shaft drives impeller to rotate, and then guides water to enter and exit by the pressure difference between inside and outside, until completing all delivery work, to avoid water into water pump electrical part, rotating shaft specific position and water pump must be provided with mechanical seal, mechanical seal reaches the expected sealing effect by the fitting and relative rotation of dynamic ring and static ring, in addition to dynamic ring, static ring, there is a group of structures indispensable: spring and spring both ends respectively independent profiled sheet metal, the profiled sheet metal makes spring keep compressed state, so that dynamic ring and static ring are continuously fitted, the stability of the relative position of the two profiled sheet metals has important influence on the sealing effect of mechanical seal, therefore, the two need to be staggered and matched, such as slotting, which inevitably leads to the decline of its own stability, and then affects the service life of mechanical seal, based on this situation, how to ensure the stability of the relative position of the two profiled sheet metals to ensure the sealing effect of mechanical seal, and ensure the stability of the profiled sheet metal itself to ensure the service life of mechanical seal, more and more become the problem that relevant technical personnel need to solve. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a kind of stable mechanical seal for water pump.

[0004] A kind of stable mechanical seal for water pump, including mobile cover, it is characterized by: the first inner groove is arranged in the side of the mobile cover, the dynamic ring is arranged in the first inner groove, the fixed cover is arranged in the other side of the mobile cover, the fixed ring is fixedly arranged in the inside center position of the fixed cover, the spring is arranged between the fixed cover and the mobile cover, the spring is in compression state, the static ring is arranged in the side of the dynamic ring away from the fixed cover, the dynamic ring is fitted with the static ring.

[0005] Further, the mobile cover is arranged with a plurality of clamping portions in a ring array around the mobile cover, the fixed cover is arranged with a plurality of bending portions in a ring array around the fixed cover close to the mobile cover, the clamping portions are clamped with the bending portions, the bending portions are arranged with a plurality of stop blocks at one end, and the bending portions are arranged with a plurality of recesses at the other end.

[0006] Further, the second inner groove is arranged in the side of the mobile cover close to the fixed cover, and the spring is arranged in the second inner groove.

[0007] Further, the inner sealing ring is arranged between the dynamic ring and the mobile cover, and the outer sealing ring is arranged in the side of the static ring away from the dynamic ring.

[0008] Further, the structure inside the water pump directly related to the mechanical seal includes a partition disc, a rotating shaft, the rotating shaft passes through the static ring and is fixedly connected with the fixed cover and the fixed ring, and the static ring is fixedly connected with the center position of the partition disc.

[0009] The beneficial effect of the stable mechanical seal for a water pump is that:

[0010] 1. The clamping portion is clamped with the bending portion, effectively ensuring the stability of the relative position of the moving cover and the fixed cover, the second inner groove effectively ensures the stability of the spring position, and the sealing effect of the mechanical seal is effectively ensured by the sealing effect of the inner sealing ring and the outer sealing ring.

[0011] 2. The annular array of the clamping portion and the bending portion is arranged, effectively ensuring the uniformity of the force of the moving cover and the fixed cover, the inner recess of the inner recess is designed, effectively enhancing the strength of the bending portion, and further effectively ensuring the stability of the fixed cover itself, thereby effectively ensuring the service life of the mechanical seal. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, but is not a limitation on the protection scope of the present application.

[0013] Figure 1 It is a schematic diagram of the application scene of the present application (one);

[0014] Figure 2 It is a schematic diagram of the application scene of the present application (two);

[0015] Figure 3 It is a schematic diagram of the overall structure of the present application;

[0016] Figure 4 It is an exploded structural schematic diagram (one) of the present application;

[0017] Figure 5 It is an exploded structural schematic diagram (two) of the present application;

[0018] Among them, 1 is a partition disc, 2 is a mechanical seal, 3 is a rotating shaft, 4 is an inner recess, 5 is a fixed cover, 6 is a fixed ring, 7 is a spring, 8 is a moving cover, 9 is a dynamic ring, 10 is a static ring, 11 is an inner sealing ring, 12 is a clamping portion, 13 is a stop block, 14 is an outer sealing ring, 15 is a first inner groove, 16 is a bending portion, and 17 is a second inner groove. DETAILED DESCRIPTION

[0019] In order to make the description clearer, the stable mechanical seal for a water pump is further described in combination with the drawings of the specification.

[0020] A kind of stable mechanical seal for water pump, including mobile cover 8, it is characterized in that: the first inner groove 15 is arranged on one side of the mobile cover 8, the dynamic ring 9 is arranged inside the first inner groove 15, the fixed cover 5 is arranged on the other side of the mobile cover 8, the fixed ring 6 is fixedly arranged in the central position inside the fixed cover 5, the spring 7 is arranged between the fixed cover 5 and the mobile cover 8, the spring 7 is in compression state, the static ring 10 is arranged on the side away from the fixed cover 5 of the dynamic ring 9, the dynamic ring 9 is attached to the static ring 10.

[0021] Further, the mobile cover 8 is arranged with the clamping part 12 in annular array on the periphery, the fixed cover 5 is arranged with the bent part 16 in annular array on the periphery close to the side of the mobile cover 8, the clamping part 12 is clamped with the bent part 16, the bent part 16 is arranged with the stopper 13 on one end, the bent part 16 is arranged with the concave part 4 on the other end.

[0022] Further, the second inner groove 17 is arranged on the side close to the fixed cover 5 of the mobile cover 8, and the spring 7 is located inside the second inner groove 17.

[0023] Further, the inner sealing ring 11 is arranged between the dynamic ring 9 and the mobile cover 8, and the outer sealing ring 14 is arranged on the side away from the dynamic ring 9 of the static ring 10.

[0024] Further, the structures inside the water pump directly related to the mechanical seal 2 include the partition disc 1 and the rotating shaft 3, the rotating shaft 3 passes through the static ring 10 and is fixedly connected with the fixed cover 5 and the fixed ring 6, and the static ring 10 is fixedly connected with the partition disc 1 at the central position.

[0025] The working principle of the stable mechanical seal for water pump is as follows: it should be noted that the two groups of formed sheet metals described in the background art part correspond to the mobile cover 8 and the fixed cover 5 respectively, during the assembly process of the water pump, the static ring 10 is fixedly connected with the partition disc 1 at the central position, the fixed cover 5 and the fixed ring 6 are fixedly connected with the rotating shaft 3 at the predetermined position, the dynamic ring 9 is attached to the static ring 10, and the installation work of the mechanical seal 2 is completed, during the working process of the water pump, the rotating shaft 3 drives the fixed cover 5 and the fixed ring 6 to rotate, the bent part 16 pushes the clamping part 12, the spring 7, the mobile cover 8 and the dynamic ring 9 are regarded as a whole and synchronously rotate relative to the static ring 10, the attachment and relative rotation of the dynamic ring 9 and the static ring 10, combined with the sealing effect of the inner sealing ring 11 and the outer sealing ring 14, make the connection position of the mechanical seal 2 and the partition disc 1 maintain sufficient sealing property, and the water cannot flow to the electrical part of the water pump, the annular array arrangement of the clamping part 12 and the bent part 16 makes the mobile cover 8 and the fixed cover 5 bear force uniformly, the concave part 4 makes the bent part 16 maintain sufficient strength, thereby guaranteeing the service life of the mechanical seal 2.

[0026] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited thereto, any change or replacement without creative labor should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope defined in the claims.

Claims

1. A stabilized mechanical seal for a water pump, comprising a movable cover, characterized in that: A first inner groove is provided on one side of the movable cover, and a moving ring is provided inside the first inner groove. A fixed cover is provided on the other side of the movable cover, and a fixed ring is fixedly provided at the center of the fixed cover. A spring is provided between the fixed cover and the movable cover, and the spring is in a compressed state. A stationary ring is provided on the side of the moving ring away from the fixed cover, and the moving ring and the stationary ring are in contact.

2. The stabilized mechanical seal for a water pump according to claim 1, characterized in that, The movable cover has a snap-fit ​​portion arranged in a ring array around its periphery, and the fixed cover has a bend portion arranged in a ring array around its periphery near the movable cover. The snap-fit ​​portion snaps into the bend portion. A stop is provided at one end of the bend portion, and an inwardly recessed portion is provided at the other end of the bend portion.

3. A stable mechanical seal for a water pump according to claim 1, characterized in that, The movable cover has a second inner groove on the side near the fixed cover, and the spring is located inside the second inner groove.

4. A stable mechanical seal for a water pump according to claim 1, characterized in that, An inner sealing ring is provided between the moving ring and the movable cover, and an outer sealing ring is provided on the side of the stationary ring away from the moving ring.

5. A stable mechanical seal for a water pump according to claim 1, characterized in that, The internal structure of the water pump directly related to this mechanical seal includes a partition plate and a rotating shaft. The rotating shaft passes through the stationary ring and is fixedly connected to the fixed cover and the fixed ring. The stationary ring is fixedly connected to the center position of the partition plate.

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