CN2679403Y

CN2679403Y - Integrated mechanical sealing device

Info

Publication number: CN2679403Y
Application number: CN 200320107598
Authority: CN
Inventors: 谭开革
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-12
Filing date: 2003-12-12
Publication date: 2005-02-16
Anticipated expiration: 2013-12-12

Abstract

The utility model discloses an integrated mechanical sealing device, which is used for a submersible pump electric motor and comprises a box body, a shaft sleeve, movable abrasive blocks, stationary abrasive blocks, a bracket, a spring and a sealing ring, wherein, the mutual contact faces of each pair of movable abrasive blocks and stationary abrasive blocks are respectively stuck with abrasion resistant layer which are special hard alloy material of which the hardness can reach HRC93. The integrated mechanical sealing device has low cost and excellent sealing effect, and that water does not flow in is guaranteed. The utility model which has long service life is very abrasion resistant, which can work more than 30, 000 hours continuously. The service life of the electric motor is prolonged greatly, and the service life can be improved by more than 30 times. The maintenance cost of the electric motor is reduced greatly. The integrated mechanical sealing device has MY-1, MY-20, MY-20A types which can respectively match for 2.2KW, 3KW, 3.5KW, 4KWJOB and QY types submersible pump electric motor.

Description

The integrated type mechanical seal device

One, technical field:

The utility model relates to the seal arrangement that is used for motor for submerged pump main shaft output terminal, more particularly is the integrated type mechanical seal device.

Two, background technique:

At present, the seal arrangement that submersible pump, motor and electric machine main shaft output terminal use all will be placed under water 20-30 rice and carry out work.In order to prevent motor rotating at high speed main shaft output terminal water inlet and to enter in the motor, thereby burn motor, so Cai seal arrangement has been installed at the electric machine main shaft output terminal.Dynamic grinding block, static grinding block in the sealing device respectively are structure as a whole, and generally adopt General Structural Steel, adopt high speed steel preferably.For example if dynamic grinding block adopts high speed steel, then static grinding block adopts bronze iron; If dynamic grinding block adopts powder metallurgy, then static grinding block adopts the resin bakelite.Use the seal arrangement of above-mentioned dynamic grinding block, static grinding block, its shortcoming is: not wear-resisting, and poor sealing performance, easily water inlet, working life is short, has so not only shortened the working life of motor, and has increased the maintenance expenses of motor.

For example in the ordinary course of things, motor can proper functioning several ten thousand hours.Be no more than 300-500 hour, will lose seal action, so just be easy to make the output terminal water inlet of electric machine main shaft and enter in the motor, thereby burn motor because of serious wear owing to above-mentioned dynamic grinding block, static grinding block use.Every motor that burns needs repair expenses just can fix for 150 yuan.

Three, summary of the invention:

The purpose of this utility model is exactly that a kind of integrated type mechanical seal device that can overcome above-mentioned shortcoming will be provided, and this seal arrangement is very wear-resisting, long service life, and sealing effect is fabulous, guarantees not intake low cost of manufacture.

In order to achieve the above object, technical solution of the present utility model is: the integrated type mechanical seal device, comprise box body, axle sleeve, spring, pair of brackets, five seal rings, dynamic grinding block and static grinding blocks, respectively be bonded with wearing layer on the face being in contact with one another of dynamic grinding block and static grinding block; This wearing layer is extraordinary Hardmetal materials, and its hardness can reach HRC 93; The working surface of this wearing layer is a smooth flat, and its roughness is 0.1.

Being in contact with one another of this dynamic grinding block and static grinding block is respectively equipped with groove on the face, can match with the wearing layer of each self-adhesive.

The thickness of this wearing layer is the 3-5 millimeter, is preferably 3 millimeters.

This wearing layer is a loop configuration, and its internal diameter is more than or equal to the internal diameter of dynamic grinding block, static grinding block, and its external diameter is less than or equal to the external diameter of dynamic grinding block, static grinding block.

Compared with the prior art the utility model has the following advantages and good effect.Integrated type mechanical seal device low cost of manufacture; Sealing effect is fabulous, guarantees not intake; Very wear-resisting, long service life has prolonged working life of motor widely; Reduced the maintenance expenses of motor widely.The integrated type mechanical seal device has MY-1, MY-20, MY-20A type, can offer 2.2KW, 3KW, 3.5KW, 4KW JOB and the supporting use of QY type motor for submerged pump respectively.Through repetition test repeatedly, submersible pump, motor proper functioning after 10,000 hours, the utility model integrated type mechanical seal device still can keep good seal action, can guarantee that motor do not intake, can not burn, and does not more need often to keep in repair motor; Calculate through the hyperline velocity test, integrated type mechanical seal device energy continuous operation 30,000 hours, can improve 30 times or more than existing seal arrangement its working life.

Four, description of drawings:

Fig. 1 is the structural representation that partly cuts open of the present utility model

Fig. 2 partly cuts open structural representation for dynamic grinding block among Fig. 1

Fig. 3 partly cuts open structural representation for static grinding block among Fig. 1

Five, embodiment:

Below in conjunction with the drawings and specific embodiments the utility model is done further and to be explained.

By Fig. 1, Fig. 2, Fig. 3 as can be known, the design principle of integrated type mechanical seal device is: the output terminal at the motor for submerged pump main shaft adopts Double End integrated type mechanical seal structure, belongs to motive sealing.The integrated type mechanical seal device is the vitals that motor for submerged pump main shaft output terminal is sealed, wherein electric machine main shaft drives dynamic grinding block 5,10 and runs up by axle sleeve 1, support 6,9, under the tension force effect of spring 7, make and closely contact between dynamic grinding block 5 and static grinding block 4, dynamic grinding block 10 and the static grinding block 11 and formed two seals respectively and 13,16, the seal action that five O type seal rings are arranged again, thereby can guarantee effectively that water can not enter motor internal from the electric machine main shaft output terminal, also just really avoid burning of motor.Could prolong the working life of motor so veritably, reduce maintenance expenses.

The integrated type mechanical seal device comprises axle sleeve 1, box body 2, spring 7, two 6,9, five seal rings 3,8,12,14,15 of support, dynamic grinding block 5,10 and static grinding blocks 4,11.This box body 2 is divided into two-part from the centre, becomes one structure by scyewed joint between this two-part box body.

Be respectively equipped with dynamic grinding block 5 and static grinding block 4, dynamic grinding block 10 and static grinding block 11 at the two ends of axle sleeve 1, and dynamic grinding block 5,10 contacts with support 6,9 respectively, this static grinding block 4,11 lays respectively at the two ends of axle sleeve 1.Be provided with spring 7 between these two supports 6,9, this spring 7 is a tension spring.Spring 7 can be pressed together dynamic grinding block 5 and static grinding block 4, dynamic grinding block 10 respectively and be in contact with one another with static grinding block 11, and dynamic grinding block 5,10 and axle sleeve 1 are coupled as one by two end faces and two supports 6,9 of box body 2 like this.Between dynamic grinding block 5 and static grinding block 4, dynamic grinding block 10 and static grinding block 11, just formed first and second road sealing surface 13,16 so respectively, thereby can prevent effectively that sealing enters motor internal from the electric machine main shaft output terminal, just guaranteed that also motor can not burn.

The tension force size of this spring 7 not only will compress the dynamic grinding block between box body 2 and support 6,95 and static grinding block 4, dynamic grinding block 10 with static grinding block 11, and closely contact mutually, but also will determine according to the material of wearing layer, wear-resistant degree.For example in the utility model, the tension force of spring is 25Kg.

Respectively be provided with groove on four end faces that between dynamic grinding block 5 and static grinding block 4, dynamic grinding block 10 and static grinding block 11, are in contact with one another and rub mutually when working, in this groove, be bonded with wearing layer 19,18 and 20,21 respectively.The shape of this groove is to determine according to the shape of the wearing layer of required bonding.In the utility model, because the shape of this wearing layer ringwise, so the shape of this groove also is an annular.Certainly, according to actual needs, also can be other practical shape.

The external diameter of this wearing layer 19,20,18,21 can be less than or equal to the external diameter of dynamic and static abrading block, and its internal diameter can be greater than or equal to the internal diameter of dynamic and static abrading block.For example the external diameter of this dynamic and static abrading block is 40 millimeters, and its internal diameter is 25 millimeters; The external diameter of this wearing layer can be 34 millimeters, and its internal diameter can be 25 millimeters.The thickness of this wearing layer is the 3-5 millimeter, is preferably 3 millimeters; Certainly, determine the thickness and the size of this wearing layer, not only will guarantee sealing effect, also will save material to reduce manufacture cost.

This dynamic grinding block 5,10 and static grinding block 4,11 are all made by powdered metallurgical material.The wearing layer 19,20,18,21 that is bonded on dynamic grinding block 5,10 and the static grinding block 4,11 is all made by extraordinary Hardmetal materials, the hardness of this special type Hardmetal materials can reach HRC 93, its abrasion resistance goes up the Rapid Tool Steel that uses than present society and exceeds 30 times, exceeds 50 times than bronze and powder metallurgy.The working surface of this wearing layer is a smooth flat, and its roughness is 0.1.Because the high-speed friction face between the every pair of dynamic grinding block and the static grinding block requires high-precision roughness and planeness, the hardness of dynamic grinding block, static grinding block manufactured materials is high more certainly, and is also just wear-resisting more, and working life is also just long more.

On the interior sidewall surface of two dynamic grinding blocks 5,10, respectively be provided with an O type seal groove that matches with O type seal ring 14,15, be used to hold O type seal ring 14,15.Between the internal face of two static grinding blocks 4,11 and box body 2, be respectively equipped with an O type seal ring 3,12.On the interior sidewall surface of axle sleeve 1, be provided with the O type seal groove that matches with O type seal ring 8, be used to hold O type seal ring 8, be sealed and matched thereby this electric machine main shaft and axle sleeve 1 are formed.These five O type seal rings 3,8,12,14,15 are all made by oil-resistant rubber material, all seal, and all are to be used for anti-sealing to enter in the motor and burn motor from the electric machine main shaft output.

The utility model matches with flat key by the flat key groove on the electric machine main shaft in use, thereby axle sleeve 1 and electric machine main shaft output coupled are integral.When work, electric machine main shaft just can drive dynamic grinding block 5,10 and rotate together by axle sleeve 1, support 6,9 like this.

In use, in order to reduce dynamic grinding block 5 and static grinding block 4, dynamic grinding block 10 and static grinding block 11 wearing and tearing each other, so the integrated mechanism seal arrangement is positioned in the grease chamber, fill machinery oil in this grease chamber No. 7, this machinery oil can enter in the box body 2 by a plurality of oilholes 17 on the box body 2, thereby can carry out lubricated well to dynamic grinding block 5,10 and static grinding block 4,11.

Claims

1, integrated type mechanical seal device, it is characterized in that comprising axle sleeve (1), box body (2), spring (7), support (6) (9), dynamic grinding block (5) (10), static grinding block (4) (11) and seal ring (3) (8) (12) (14) (15), being in contact with one another between this dynamic grinding block (5) and static grinding block (4) and dynamic grinding block (10) and the static grinding block (11) is bonded with wearing layer (19) (18), (20) (21) respectively on the face; This wearing layer is extraordinary Hardmetal materials, and its hardness can reach HRC 93; The working surface of this wearing layer is a smooth flat, and its roughness is 0.1.

2, integrated type mechanical seal device according to claim 1, it is characterized in that being in contact with one another between described dynamic grinding block (5) and static grinding block (4), dynamic grinding block (10) and the static grinding block (11) is respectively equipped with groove on the face, can match with wearing layer (19) (18), (20) (21) of each self-adhesive respectively.

3, integrated type mechanical seal device according to claim 1 and 2 is characterized in that the thickness of described wearing layer (19) (20) (18) (21) is the 3-5 millimeter, is preferably 3 millimeters.

4, integrated type mechanical seal device according to claim 1 and 2, it is characterized in that described wearing layer (19) (20) (18) (21) is loop configuration, its internal diameter is more than or equal to the internal diameter of dynamic grinding block (5) (10), static grinding block (4) (11), and its external diameter is less than or equal to the external diameter of dynamic grinding block, static grinding block.

5, integrated type mechanical seal device according to claim 3, it is characterized in that described wearing layer (19) (20) (18) (21) is loop configuration, its internal diameter is more than or equal to the internal diameter of dynamic grinding block (5) (10), static grinding block (4) (11), and its external diameter is less than or equal to the external diameter of dynamic grinding block, static grinding block.