CN213540821U - Shaft sealing device of wastewater treatment water pump - Google Patents

Abstract

The utility model discloses a shaft sealing device of a wastewater treatment water pump, which comprises a shaft sleeve, a movable ring, a static ring, a sealing element, a connecting ring, a spring and a baffle ring, wherein the static ring is sleeved on the shaft sleeve, one end of the shaft sleeve is provided with an annular bulge, the end surface of the annular bulge is provided with an annular mounting groove with the opening direction facing to the static ring, one end of the movable ring is arranged in the annular mounting groove, the sealing element is arranged between the static ring and the movable ring, the sealing element comprises two sealing rings which are respectively and fixedly connected with the end surfaces of the static ring and the movable ring, the two sealing rings are abutted against each other, the baffle ring is provided with an internal thread, one end of the shaft sleeve far away from the movable ring is provided with an external thread, the baffle ring is in threaded connection with the shaft sleeve, the spring sleeve is arranged on the shaft sleeve and arranged between the baffle ring and, the other end of go-between sets up in ring groove, has solved the technical problem that exists among the prior art, if: the spring is inconvenient to replace.

Description

Shaft sealing device of wastewater treatment water pump

Technical Field

The utility model relates to a water pump shaft seal field is a shaft seal device of waste water treatment water pump particularly.

Background

Mechanical seal (mechanical seal) refers to a device for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in contact and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal. The elastic loading mechanism and the auxiliary seal are mechanical seals of metal corrugated pipes, which are called metal corrugated pipe seals. In light sealing, a rubber corrugated pipe is used as auxiliary sealing, the elasticity of the rubber corrugated pipe is limited, and a spring is generally required to be supplemented to meet the loading elasticity. "mechanical seal" is often referred to by one as "mechanical seal" for short.

The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world. Mechanical seals, also called face seals, are defined in the relevant national standards as follows: "means for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and which are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal. "

The sealing element of the mechanical shaft seal of the water pump in the prior art usually comprises a movable ring and a stationary ring, the movable ring rotates along with a main shaft, the movable ring and the stationary ring are mutually abutted, but because the movable ring and the stationary ring are in surface-to-surface contact, when the movable ring and the stationary ring are in sliding friction, under the condition that some water quality contains particles, such as industries of dredging engineering, purification devices, sewage and wastewater treatment engineering, alumina factories, oil refineries, metallurgy and the like, the particles are easy to permeate into an installation cavity of the spring, and in addition, the solution usually has acidity and alkalinity, so that the spring is easy to corrode and block the installation cavity of the spring, and further the compensation performance of the stationary ring is influenced, because the spring is usually installed in an annular cavity of the flange in the prior art, when the spring is corroded and the installation cavity of the spring is blocked, the whole mechanical seal needs to be taken out when the spring is taken out, it exists: inconvenient technical problem is changed to the spring.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present invention is directed to: the utility model provides a shaft seal device of waste water treatment water pump for solve the technical problem that exists among the prior art, if: the spring is inconvenient to replace.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

a shaft sealing device of a wastewater treatment water pump comprises a shaft sleeve, a movable ring, a static ring, a sealing element, a connecting ring, a spring and a baffle ring, wherein the shaft sleeve is fixedly sleeved on a main shaft of the water pump, the static ring is sleeved on the shaft sleeve, one end of the shaft sleeve is provided with an annular bulge, the end face of the annular bulge is provided with an annular mounting groove with an opening direction facing to the static ring, one end of the movable ring is arranged in the annular mounting groove, the sealing element is arranged between the static ring and the movable ring, the sealing element comprises two sealing rings which are respectively and fixedly connected with the end faces of the static ring and the movable ring, one sides opposite to the two sealing rings are mutually abutted, the baffle ring is provided with an internal thread, one end of the shaft sleeve, far away from the movable ring, is provided with an external thread, the baffle ring is in threaded connection with the shaft sleeve, the spring is sleeved, the spring is characterized in that two ends of the spring respectively act on the end faces of the retaining ring and the static ring, an annular clamping groove is formed in one end, close to the static ring, of the retaining ring, one end of the connecting ring is sleeved on the static ring, and the other end of the connecting ring is arranged in the annular clamping groove.

Furthermore, the radial direction of the baffle ring is connected with a limit screw through threads, and the limit screw is abutted to the shaft sleeve.

Further, the static ring is in clearance fit with the shaft sleeve.

Further, the movable ring is in interference fit with the annular mounting groove.

Furthermore, a sealing ring is arranged in the annular clamping groove.

Furthermore, a static ring bulge is arranged on one side, away from the static ring, of the connecting ring, and the static ring bulge is arranged in the annular clamping groove.

Furthermore, a limiting bulge is arranged on the static ring, and one side, far away from the baffle ring, of the connecting ring is abutted to the limiting bulge.

Compared with the prior art, the utility model, following beneficial effect has:

1. keep away from the one end of rotating ring through keeping off ring threaded connection axle sleeve, the one end that quiet ring was kept away from to the go-between sets up in the ring groove on keeping off the ring, rotates to keep off the ring and can make and keep off the ring and break away from the go-between, carries out and takes out the spring, can clear up the clearance part between go-between and the axle sleeve this moment, has reached the beneficial effect that is convenient for change the clearance between spring and go-between and the axle sleeve.

Drawings

FIG. 1 is an overall structure diagram of a shaft sealing device of a wastewater treatment water pump according to the present invention;

list of reference numerals

1-main shaft, 2-shaft sleeve, 3-dynamic ring, 4-static ring, 5-spring, 6-connecting ring, 7-sealing element, 8-retaining ring and 9-limit screw.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to fig. 1, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, an integral connection, or a detachable connection; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific situations.

A shaft sealing device of a wastewater treatment water pump comprises a shaft sleeve 2, a movable ring 3, a static ring 4, a sealing element 7, a connecting ring 6, a spring 5 and a baffle ring 8, wherein the shaft sleeve 2 is fixedly sleeved on a main shaft 1 of the water pump, the static ring 4 is sleeved on the shaft sleeve 2, one end of the shaft sleeve 2 is provided with an annular bulge, the end face of the annular bulge is provided with an annular mounting groove with an opening direction facing the static ring 4, one end of the movable ring 3 is arranged in the annular mounting groove, the sealing element 7 is arranged between the static ring 4 and the movable ring 3, the sealing element 7 comprises two sealing rings, the two sealing rings are respectively and fixedly connected with the end faces of the static ring 4 and the movable ring 3, one sides of the two sealing rings opposite to each other are mutually abutted, the baffle ring 8 is provided with an internal thread, one end of the shaft sleeve 2 far away from the movable ring 3 is provided with, the spring 5 is sleeved on the shaft sleeve 2 and arranged between the retaining ring 8 and the static ring 4, two ends of the spring 5 respectively act on the retaining ring 8 and the end face of the static ring 4, the retaining ring 8 is close to one end of the static ring 4 and is provided with an annular clamping groove, one end of the connecting ring 6 is sleeved on the static ring 4, and the other end of the connecting ring 6 is arranged in the annular clamping groove.

As shown in figure 1, the shaft sleeve 2 is sleeved on the main shaft 1 and rotates with the main shaft 1, the shaft sleeve 2 is in a T-shaped structure, the shaft sleeve 2 drives the movable ring 3 to rotate together when rotating, the sealing element 7 is abutted with each other and generates sliding friction to play a role in sealing, a gap is formed between the inner side of the connecting ring 6 and the shaft sleeve 2, the spring 5 is located in the gap, but due to the sliding friction, when particles exist in water, particularly acid liquor, alkali liquor and organic solution, the particles permeate into the vicinity of the spring 5, namely the gap between the connecting ring 6 and the shaft sleeve 2, and due to the acidity and alkalinity, the particles stay on the spring 5 for a long time, are easy to corrode the spring 5 and generate blockage.

Because keep off 8 threaded connection axle sleeves 2 and keep away from the one end of rotating ring 3, the one end that the quiet ring 4 was kept away from to go-between 6 sets up in the ring groove on keeping off ring 8, so as shown in figure 1, rotate and keep off ring 8 and can make and keep off ring 8 and break away from go-between 6, take out spring 5, can clear up the clearance part between go-between 6 and axle sleeve 2 this moment, reached the beneficial effect of being convenient for change the clearance between spring 5 and go-between 6 and the axle sleeve 2.

Furthermore, stop ring 8 radially has stop screw 9 through threaded connection, stop screw 9 with axle sleeve 2 butt, stop screw 9 has played spacing effect.

Further, the static ring 4 is in clearance fit with the shaft sleeve 2.

Further, the movable ring 3 is in interference fit with the annular mounting groove.

Furthermore, a sealing ring is arranged in the annular clamping groove, so that the sealing performance is improved.

Furthermore, a static ring bulge is arranged on one side, away from the static ring 4, of the connecting ring 6, and the static ring bulge is arranged in the annular clamping groove.

Furthermore, a limiting protrusion is arranged on the static ring 4, and one side, far away from the baffle ring 8, of the connecting ring 6 is abutted against the limiting protrusion, so that the effect of limiting the static ring 4 is achieved.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the embodiments in the above description, and the technical concept of the present invention can be within the scope of the present invention, and can be modified to various simple modifications, and these simple modifications all belong to the protection scope of the present invention. It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features. In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims (7)

1. The shaft sealing device of the wastewater treatment water pump is characterized by comprising a shaft sleeve (2), a movable ring (3), a static ring (4), a sealing element (7), a connecting ring (6), a spring (5) and a baffle ring (8), wherein the shaft sleeve (2) is fixedly sleeved on a main shaft (1) of the water pump, the static ring (4) is sleeved on the shaft sleeve (2), one end of the shaft sleeve (2) is provided with an annular bulge, the end surface of the annular bulge is provided with an annular mounting groove with an opening direction facing the static ring (4), one end of the movable ring (3) is arranged in the annular mounting groove, the sealing element (7) is arranged between the static ring (4) and the movable ring (3), the sealing element (7) comprises two sealing rings which are respectively and fixedly connected with the end surfaces of the static ring (4) and the movable ring (3), and the opposite sides of the two sealing rings are mutually abutted, keep off ring (8) and be equipped with the internal thread, keep away from axle sleeve (2) the one end of rotating ring (3) is equipped with the external screw thread, keep off ring (8) threaded connection axle sleeve (2), spring (5) cover is located on axle sleeve (2) and set up in keep off ring (8) with between quiet ring (4), spring (5) both ends act on respectively keep off ring (8) with on the terminal surface of quiet ring (4), keep off ring (8) and be close to the one end of quiet ring (4) is equipped with ring groove, go-between (6) pot head is established on quiet ring (4), the other end of go-between (6) set up in the ring groove.

2. The shaft sealing device of a wastewater treatment water pump according to claim 1, characterized in that a limit screw (9) is connected to the baffle ring (8) in a radial direction through a thread, and the limit screw (9) is abutted with the shaft sleeve (2).

3. A shaft seal arrangement for a wastewater treatment pump according to claim 1, characterised in that the stationary ring (4) is a clearance fit with the shaft sleeve (2).

4. The shaft seal assembly of a wastewater treatment pump according to claim 1, characterized in that the rotating ring (3) is in interference fit with the annular mounting groove.

5. The shaft seal assembly of claim 1, wherein a seal ring is disposed within the annular groove.

6. The shaft seal device of a wastewater treatment pump according to claim 1, characterized in that the side of the connecting ring (6) away from the stationary ring (4) is provided with a stationary ring projection, and the stationary ring projection is arranged in the annular clamping groove.

7. The shaft sealing device of a wastewater treatment water pump according to claim 1, characterized in that the stationary ring (4) is provided with a limiting protrusion, and one side of the connecting ring (6) far away from the baffle ring (8) is abutted against the limiting protrusion.

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