CN219384827U - Water inlet sealing device for shallow air floatation - Google Patents

Abstract

The water inlet sealing device comprises a water inlet pipe, a central fixing seat, a central rotating body and an upper rotating pipe, wherein the central fixing seat is cylindrical, the upper end of the water inlet pipe is coaxially fixed at the lower part of the central fixing seat, the central rotating body is positioned in the central fixing seat, the central rotating body is fixedly connected with the lower end of the upper rotating pipe, the bottom of the central fixing seat is a central fixing base, annular graphite reinforced nylon is fixedly arranged at the bottom of the central fixing base, and the water outlet of the water inlet pipe is higher than the upper end surface of the graphite reinforced nylon; the packing is arranged between the central rotating body and the inner wall of the central fixing seat, the lower end of the packing is pressed on the upper end face of the graphite reinforced nylon, and the upper end of the packing is pressed by a packing pressing ring in the central fixing seat. According to the utility model, through optimizing the sealing structure and the design of the water inlet pipe, the leakage probability of the water inlet position can be reduced, and the leakage water quantity is reduced.

Description

Water inlet sealing device for shallow air floatation

Technical Field

The utility model belongs to the field of water treatment equipment, and particularly relates to a water inlet sealing device for shallow air floatation.

Background

Shallow air flotation is widely applied to water supply purification, pretreatment and advanced treatment of domestic sewage and industrial wastewater. Shallow air floatation is cylindrical as a whole, has a compact structure, and comprises five parts: the device comprises a tank body, a rotary water distribution mechanism, a dissolved air release mechanism, a frame mechanism, a water collection mechanism and the like. The water inlet, the water outlet and the scum discharge outlet are all concentrated in the central area of the tank body, and the water distribution mechanism, the water collecting mechanism and the dissolved air release mechanism are tightly connected with the frame and rotate around the center of the tank body.

When shallow air is floated in the water inlet of the equipment, the water distribution mechanism needs to rotate, so that the sealing requirement on the water inlet is higher. Conventional shallow air floatation adopts packing to seal at the water inlet, often produces the condition that the seal is not tight easily in the operation in-process, and the water inlet is revealed, even rotatory card is dead, and inlet tube design is unreasonable, leads to the water inlet to reveal that the probability is very big.

Disclosure of Invention

The utility model aims to provide a shallow air floating water inlet sealing device, which solves the technical problems through optimizing a sealing structure and a water inlet pipe design.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the water inlet sealing device comprises a water inlet pipe, a central fixing seat, a central rotating body and an upper rotating pipe, wherein the central fixing seat is cylindrical, the upper end of the water inlet pipe is coaxially fixed at the lower part of the central fixing seat, the central rotating body is positioned in the central fixing seat, the central rotating body is fixedly connected with the lower end of the upper rotating pipe, the bottom of the central fixing seat is a central fixing base, annular graphite reinforced nylon is fixedly arranged at the bottom of the central fixing base, and the water outlet of the water inlet pipe is higher than the upper end surface of the graphite reinforced nylon; the packing is arranged between the central rotating body and the inner wall of the central fixing seat, the lower end of the packing is pressed on the upper end face of the graphite reinforced nylon, and the upper end of the packing is pressed by a packing pressing ring in the central fixing seat.

The distance between the water outlet of the water inlet pipe and the lower end surface of the center fixing base is greater than 50mm.

The longitudinal section of the single side of the graphite reinforced nylon is L-shaped, and the outer circular surface of the graphite reinforced nylon is tightly attached to the inner wall of the central fixing seat.

The upper end of center fixing base sets up the compression flange, installs on the compression flange and is used for compressing tightly the gland screw of packing clamping ring.

The packing is butter packing.

The beneficial effects of the utility model are as follows: according to the utility model, the water inlet pipe is welded on the central fixed base of the shallow air floatation, and the water outlet of the water inlet pipe is at least 50mm higher than the central fixed base, so that the water quantity of the water inlet sealing packing is greatly reduced, the flow rate of water is also obviously reduced, and the leakage at the position is avoided.

The special-shaped graphite reinforced nylon piece is arranged between the central fixed base and the central rotating body, firstly, the special-shaped graphite reinforced nylon piece is used for reducing the inlet sewage to enter the packing, secondly, the graphite reinforced nylon piece and the central rotating body are not easy to wear in the rotating process, and the equipment is stable in operation.

In addition, in the prior art, the tetrafluoro gasket between the central fixed base and the central rotating body is easy to escape from the equipment to be flushed into a rear pipeline by water, so that leakage is caused and the dry grinding of the central rotating body 3 is caused until the central rotating body is blocked; the graphite reinforced nylon piece is fixed, so that the problems of the tetrafluoro gasket can be well solved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an elevation view of a shallow air floatation employing the present utility model;

the marks in the figure: 1. the water distribution device comprises a water inlet pipe, a central fixed base, a central rotating body, a packing, a central rotating body, an upper rotating pipe, a lower rotating pipe, a water outlet pipe, a pressing screw, a pressing flange, a packing pressing ring, a fixing outer ring, a graphite reinforced nylon and a water distribution pipe.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples, which are not intended to be limiting.

Referring to the drawings, the shallow air floating water inlet sealing device comprises a water inlet pipe 1, a central fixing seat, graphite reinforced nylon 11, a packing 3, a central rotating body 4 and an upper rotating pipe 5, wherein the arrow in the drawing shows the water flow direction. The center fixing seat comprises a circular center fixing base 2, a fixing outer ring 10 and a pressing flange 8 which are sequentially connected from bottom to top, wherein an annular graphite reinforced nylon 11 is fixedly arranged at the bottom of the center fixing base 2, the longitudinal section of one side of the graphite reinforced nylon 11 is L-shaped, the inner diameter of the graphite reinforced nylon 11 is consistent with that of the center fixing base 2, the water inlet pipe 1 is inserted into and welded with a center hole of the center fixing base 2, and the water outlet of the water inlet pipe 1 is higher than the upper end surface of the graphite reinforced nylon 11. The central rotating body 4 is welded on the outer side surface of the lower end of the upper rotating pipe 5, the central rotating body 4 is positioned in the central fixing seat 2, a packing 3, preferably an oil packing such as a butter packing, is arranged between the central rotating body 4 and the inner wall of the fixing outer ring 10, the lower end of the packing 3 is tightly pressed on the upper end of the graphite reinforced nylon 11, and the upper end of the packing 3 is axially pressed by a packing pressing ring 9; the lower end of the central rotating body 4 is positioned between the water inlet pipe 1 and the graphite reinforced nylon 11, and a certain gap is reserved between the central rotating body 4 and the water inlet pipe 1, so that the central rotating body 4 is prevented from contacting and rubbing with the water inlet pipe 1 in the rotating process.

The compression flange 8 is connected with the upper end face of the fixed outer ring 10 through screws, a connecting screw hole is formed in the compression flange 8, and the compression screw 7 penetrates through the connecting screw hole to be propped against the packing compression ring 9, so that the packing 3 is compressed.

Preferably, the distance L between the water outlet of the water inlet pipe 1 and the lower end surface of the central fixed base 2 is greater than 50mm, so that the water outlet of the water inlet pipe 1 is ensured to be higher than the upper end surface of the graphite reinforced nylon 11.

In the utility model, if water enters the packing 3 from the water inlet pipe 1, the water needs to flow downwards to the graphite reinforced nylon 11 and then flow upwards along the graphite reinforced nylon 11 to enter the packing 3, and the water flow in the process actually needs to take a U-shaped path, so that the water quantity entering the packing 3 from the water inlet pipe 1 is greatly reduced, and the water flow speed is obviously reduced, thereby avoiding leakage at the place.

The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting it, and it should be understood by those skilled in the art that modifications and equivalents may be made to the specific embodiments of the present utility model with reference to the above embodiments, and any modifications and equivalents not departing from the spirit and scope of the present utility model are within the scope of the claims appended hereto.

Claims (5)

1. The utility model provides a shallow air supporting sealing device that intakes, includes inlet tube, central fixing base, central rotator and last swivelling joint pipe, and central fixing base is the cylinder, and the coaxial fixed lower part at central fixing base in inlet tube upper end, and central rotator is located central fixing base, and central rotator fixed connection is at the lower extreme of last swivelling joint pipe, its characterized in that: the bottom of the central fixing seat is a central fixing seat, the bottom of the central fixing seat is fixedly provided with annular graphite reinforced nylon, and the water outlet of the water inlet pipe is higher than the upper end surface of the graphite reinforced nylon; the packing is arranged between the central rotating body and the inner wall of the central fixing seat, the lower end of the packing is pressed on the upper end face of the graphite reinforced nylon, and the upper end of the packing is pressed by a packing pressing ring in the central fixing seat.

2. The shallow air floating water inlet sealing device according to claim 1, wherein: the distance between the water outlet of the water inlet pipe and the lower end surface of the center fixing base is greater than 50mm.

3. The shallow air floating water inlet sealing device according to claim 1, wherein: the longitudinal section of the single side of the graphite reinforced nylon is L-shaped, and the outer circular surface of the graphite reinforced nylon is tightly attached to the inner wall of the central fixing seat.

4. The shallow air floating water inlet sealing device according to claim 1, wherein: the upper end of center fixing base sets up the compression flange, installs on the compression flange and is used for compressing tightly the gland screw of packing clamping ring.

5. The shallow air floating water inlet sealing device according to claim 1, wherein: the packing is butter packing.