CN210800064U

CN210800064U - Novel mechanical sealing device of pressure screen

Info

Publication number: CN210800064U
Application number: CN201921626208.9U
Authority: CN
Inventors: 刘建涛; 刘建坡; 李雷鸣
Original assignee: Zhengzhou Leizhan Technology Paper Machinery Co Ltd
Current assignee: Zhengzhou Leizhan Technology Paper Machinery Co Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-06-19
Anticipated expiration: 2029-09-27

Abstract

The utility model provides a novel mechanical seal device of pressurized screen, includes mechanical seal and is used for fixed mechanical seal's mechanical seal seat, is equipped with water inlet and the delivery port that provides cooling and lubricated water to seal end face department on the mechanical seal, mechanical seal and mechanical seal seat are for cooperating through single step, make mechanical seal part expose downwards in mechanical seal seat, mechanical seal's part that exposes downwards in mechanical seal seat is located to water inlet and delivery port. The water inlet and the water outlet which are indirectly connected with the mechanical sealing seat are changed into water inlet and outlet pipes which are directly connected with the mechanical sealing, so that the damage of the mechanical sealing caused by water leakage when the sealing is not tight is avoided.

Description

Novel mechanical sealing device of pressure screen

Technical Field

The utility model belongs to the technical field of papermaking equipment, concretely relates to novel sealing device of pressure screen machinery.

Background art:

the pressure screen is a pore plate type pulp screen used in the medium and low concentration pulp screening process, and has the function of removing coarse residue which does not meet the papermaking quality requirement in the pulp. Because the pressure screen is sealed inside the screen frame, and is not suitable for using the packing to seal, consequently, the mechanical seal is widely adopted on the pressure screen to realize its sealing performance. The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit 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 common mechanical sealing structure is composed of elements such as a static ring, a rotating ring, an elastic element, a spring seat, a set screw, an auxiliary sealing ring of the rotating ring, an auxiliary sealing ring of the static ring and the like, and an anti-rotating pin is fixed on a gland to prevent the static ring from rotating.

The traditional mechanical seal water control of the pressure screen is that clean water enters the end face of a mechanical seal through a flow control ball valve after passing through a filter, and the purposes of cooling and lubrication are achieved through the reciprocating circulation of a water inlet pipe and a water outlet pipe, but the mechanical seal and a mechanical seal seat are in a double-step design, so that the water loss is easily caused when the seal is not tight, the cooling effect is poor, and even the mechanical seal is damaged.

Chinese utility model patent CN 208138482U-discloses a pressure screen mechanical seal protection device (published date 20181123), which comprises a water inlet pipe, a water outlet pipe, a flow monitoring module, a water pressure monitoring module and a control module, wherein the water outlet end of the water inlet pipe is communicated with the water inlet of a seal cavity, the water outlet of the seal cavity is communicated with the water inlet end of the water outlet pipe, the flow monitoring module and the water pressure monitoring module are arranged on the water inlet pipe, and can monitor the water flow in the mechanical seal in real time, and can stop the pressure screen in time when water is cut off or the water pressure is too low, avoid the situations of insufficient lubrication degree and too high temperature of the mechanical seal caused by water shortage, improve the stable and reliable work of the mechanical seal, however, the water inlet pipe and the water outlet pipe are connected through the mechanical sealing seat, and water flow needs to pass through the mechanical sealing seat when entering the mechanical sealing seat, so that water is easy to lose from gaps when the mechanical sealing and the sealing seat are not sealed tightly.

The chinese utility model patent CN 202610640U-discloses a mechanical sealing device for pressure sieves, which comprises a driving ring, a moving ring seat, a moving ring and a stationary ring, wherein the moving ring is sleeved on the step surface at one end of the moving ring seat, and the moving ring is in contact with the stationary ring; a static ring O-shaped ring is arranged on the step surface of the static ring, and a moving ring O-shaped ring is arranged in the other step surface of the moving ring seat. The novel technology of the latest sealing end face is adopted, and the modularized design is adopted, so that the same part is universal for products of different models, but the connection mode of the device is not compact enough, and the sealing effect is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a novel mechanical seal device of pressurized screen, the device simple structure will be connected mechanical seal and mechanical seal seat connected mode and change into the cooperation of single step, and the water inlet and outlet pipe that is indirect associative by mechanical seal seat is changed into and is directly connected with mechanical seal, avoids leaking when mechanical seal and mechanical seal seat are sealed inseparable, arouses mechanical seal's damage.

The utility model provides a novel mechanical seal device of a pressure screen, which comprises a mechanical seal and a mechanical seal seat used for fixing the mechanical seal, wherein the mechanical seal is provided with a water inlet and a water outlet which are used for providing cooling and lubricating water for the seal end face, and the mechanical seal seat are matched through a single step, so that the mechanical seal part is exposed downwards to the mechanical seal seat;

the water inlet and the water outlet are arranged on the part of the mechanical seal, which is exposed out of the mechanical seal seat downwards.

The part of the mechanical seal, which is exposed out of the mechanical seal seat downwards, is in an inverted frustum shape.

The water inlet and the water outlet are arranged at the conical surface of the inverted frustum shape.

The water inlet is connected with a water inlet pipe, the water inlet end of the water inlet pipe is communicated with an external water source, the water outlet is connected with a water outlet pipe, and the water outlet pipe is communicated with an external water storage device.

And a control flow valve is arranged on the water inlet pipe.

The mechanical seal is arranged at the rotating shaft and is fixed on the transmission mounting seat through a mechanical seal seat.

The mechanical seal is connected with the mechanical seal seat through a fixing bolt.

The mechanical sealing seat is connected with the transmission mounting seat through a locking bolt.

The utility model has the advantages that:

1. the device of the utility model is simple in structure, changes the connection mode of connecting the mechanical seal and the mechanical seal seat into a single machine

The step matching, the water inlet and the water outlet which are indirectly connected by the mechanical sealing seat are changed into the way that the water inlet and the water outlet are directly connected with the mechanical sealing, thereby avoiding the damage of the mechanical sealing caused by water leakage when the mechanical sealing and the mechanical sealing seat are not tight.

2. The mechanical seal in the device is connected with the mechanical seal seat through a fixing bolt, and the mechanical seal seat is connected with the transmission shaft

Move between the mount pad and connect through locking bolt, adopt the connected mode of bolt, dismantlement that can be better makes things convenient for the installation and the use in later stage.

3. The flow control ball valve is arranged on the water inlet pipe in the device, so that the flow of water can be better controlled.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a mechanical seal mounted on a pressure screen;

fig. 3 is an enlarged view at a in fig. 2.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

It should be understood that the following examples are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the examples, those of ordinary skill in the art should understand that: modifications and equivalents of the present invention may be made without departing from the spirit and scope of the invention and any modifications or partial replacements within the scope of the claims of the present invention.

Referring to fig. 1 to 3, the utility model provides a novel mechanical seal device of pressurized screen, 1 fixed mounting of mechanical seal is on the mechanical seal seat 3 of the 2 upper ends of transmission mount pad of pressurized screen, and pivot 6 passes mechanical seal 1 and installs on transmission mount pad 2, and mechanical seal is last 1 to be equipped with water inlet 4 and the delivery port 5 that provides cooling and lubricated water to seal end face department.

The mechanical seal 1 and the mechanical seal seat 3 are matched through a single step, so that the mechanical seal 1 is partially exposed out of the mechanical seal seat 3, the part of the mechanical seal 1, which is exposed out of the mechanical seal seat 3, is in an inverted frustum shape, and the water inlet 4 and the water outlet 5 are arranged at the conical surface of the inverted frustum shape.

The water inlet 4 in the embodiment is connected with a water inlet pipe 41, and the water inlet end of the water inlet pipe 41 is communicated with an external water source; the water outlet 5 is connected with a water outlet pipe 51, the water outlet pipe 51 is communicated with an external water storage device, and an external water source and the external water storage device can be integrated to realize recycling.

Mechanical seal 1 in this embodiment is connected through fixing bolt between 3 with mechanical seal seat, through locking bolted connection between 3 with the transmission mount pad 2 of mechanical seal seat, adopts the connected mode of bolt, can be better dismantlement, makes things convenient for the installation and the use in later stage.

The bolts in the embodiment are all hexagon socket head cap bolts, so that the fastening and the dismounting are convenient, and the sliding angle is not easy.

The end of intaking of inlet tube 41 in this embodiment is equipped with filter equipment, and the clear water after the filtration directly gets into through inlet tube 41 with mechanical seal 1, reaches the purpose of cooling, lubrication through the reciprocating circulation of business turn over water pipe.

The water inlet pipe 41 in this embodiment is provided with a flow control ball valve (not shown in the figure), which can better control the flow of water.

The mechanical seal 1 is matched with the mechanical seal seat 3 through a single step, a water inlet and a water outlet which are indirectly connected with the mechanical seal seat 3 are changed into a water inlet pipe 41 and a water outlet pipe 51 which are directly connected with the mechanical seal 1, water flow directly enters the mechanical seal 1, and the damage of the mechanical seal 1 caused by water leakage when the mechanical seal 1 and the mechanical seal seat 3 are not tightly sealed is avoided.

The working principle of the utility model is as follows:

after being filtered by the filtering device, the clean water in the water inlet pipe 4 directly enters the mechanical seal 1 from the water inlet 4 of the part of the mechanical seal 1, which is exposed out of the mechanical seal seat 3 downwards, so as to achieve the effect of cooling and lubricating the mechanical seal 1, and then the water is discharged from the water outlet. Because the water inlet 4 and the water outlet 5 are directly connected with the water inlet pipe 41 and the water outlet pipe 51, the problem of water leakage caused by loose sealing between the mechanical seal 1 and the mechanical seal seat 3 is avoided, and the flow control ball valve is arranged on the water inlet pipe 41, so that the flow of water can be better controlled.

Claims

1. The utility model provides a novel mechanical seal device of pressurized screen, includes mechanical seal and is used for fixed mechanical seal's mechanical seal seat, is equipped with water inlet and delivery port to the water of cooling and lubrication water of seal end face department on the mechanical seal, its characterized in that: the mechanical seal and the mechanical seal seat are matched through a single step, so that the mechanical seal part is exposed out of the mechanical seal seat downwards;

2. The novel mechanical seal device of the pressure screen as claimed in claim 1, wherein: the part of the mechanical seal, which is exposed out of the mechanical seal seat downwards, is in an inverted frustum shape.

3. The novel mechanical seal device of the pressure screen as claimed in claim 2, wherein: the water inlet and the water outlet are arranged at the conical surface of the inverted frustum shape.

4. A new type of mechanical seal for pressure screens according to any of claims 1 to 3, characterised in that: the water inlet is connected with a water inlet pipe, the water inlet end of the water inlet pipe is communicated with an external water source, the water outlet is connected with a water outlet pipe, and the water outlet pipe is communicated with an external water storage device.

5. The novel mechanical seal device of the pressure screen as claimed in claim 4, wherein: and a control flow valve is arranged on the water inlet pipe.

6. The novel mechanical seal device of the pressure screen as claimed in claim 1, wherein: the mechanical seal is arranged at the rotating shaft and is fixed on the transmission mounting seat through a mechanical seal seat.

7. The novel mechanical seal device of the pressure screen as claimed in claim 6, wherein: the mechanical seal is connected with the mechanical seal seat through a fixing bolt.

8. The novel mechanical seal device of the pressure screen as claimed in claim 6, wherein: the mechanical sealing seat is connected with the transmission mounting seat through a locking bolt.