CN204140391U

CN204140391U - With the roots blower of combined sealed device

Info

Publication number: CN204140391U
Application number: CN201420447283.XU
Authority: CN
Inventors: 彭湘林
Original assignee: CHANGSHA HUAZHONGYI BLOWER Co Ltd
Current assignee: CHANGSHA HUAZHONGYI BLOWER Co Ltd
Priority date: 2014-08-09
Filing date: 2014-08-09
Publication date: 2015-02-04
Anticipated expiration: 2024-08-09

Abstract

The utility model relates to roots blower technical field, be specifically related to the roots blower with combined sealed device, draw together power rotor, driven rotor, main fuel tank, drop tank, front wallboard, rear wall plate, casing, driving gear, driven gear, bearing, bearing support and bearing gland, also comprise combined sealed device, wherein, combined sealed device comprises seal cartridge, sealing spacer, outside framework oil seal group and O RunddichtringO; First combined sealed device is directly installed on wallboard and processes by the utility model, decreases manufacturing procedure, improves precision and the coaxality of workpiece; Secondly adopt outside framework oil seal group to have structure simple, mounting or dismounting are convenient, with low cost, good sealing effect, to working environment and the feature such as maintaining is less demanding.

Description

With the roots blower of combined sealed device

Technical field

The utility model relates to roots blower technical field, is specifically related to the roots blower with combined sealed device.

Background technique

General Roots blower all can produce the leakage problem of gas when carrying gas, thus reduces the efficiency of blower fan.Therefore, for preventing Leakage Gas, between wallboard and impeller, all adopt seal arrangement, in prior art, comparatively generally adopt shallow tooth labyrinth and comb maze device, its seal cartridge is fixed on rotor, the labyrinth that lining teeth groove is formed with sealing endoporus, seals to gas, labyrinth lining is generally made by metallic material, rub for the heart stops metalwork, top, labyrinth is logical leaves comparatively wide arc gap, and the shortcoming of this structure is that sealing is poor.Another kind is mechanical seal, and its sealing is that a kind of end-surface friction pair that utilizes carries out the device sealed.Friction pair is fitted by the end face of rotating ring and stationary ring and is formed, and carries out pretension during assembling by elastic element, is clamped during work by elastic element and pressure medium.This structure is as direct contact seal, and its good sealing effect, but due to complicated structure, required precision is higher, price comparison is expensive, and once wear and tear, maintenance is just more difficult.

Summary of the invention

The purpose of this utility model is to provide a kind of good seal performance, and convenient processing and manufacture and being easy to is installed and the Roots blower of combined sealed device of maintenance.

In order to solve the problem existing for background technique, the utility model is by the following technical solutions: with the roots blower of combined sealed device, comprise power rotor, driven rotor, main fuel tank, drop tank, front wallboard, rear wall plate, casing, driving gear, driven gear, bearing, bearing support and bearing gland, also comprise combined sealed device, described combined sealed device comprises seal cartridge, sealing spacer, outside framework oil seal group and O RunddichtringO; The axle of described power rotor and driven rotor is all fixed with described seal cartridge, and 15mm place, described seal cartridge front end is provided with the shallow tooth of V-type, and the rear end of described seal cartridge is provided with light cover.

Described light puts and is provided with described outside framework oil seal group, described outside framework oil seal group comprises first group of outside framework oil seal and second group of outside framework oil seal, described first group of outside framework oil seal comprises two the first oil sealings, described second group of outside framework oil seal comprises two the second oil sealings, described two the first oil sealings are arranged on the inner side of the inner chamber of described front wallboard processing back-to-back, described two the second oil sealings are arranged on the outside of the inner chamber of described front wallboard processing, adopt described sealing spacer to separate in the middle of described first group of outside framework oil seal and second group of outside framework oil seal; The middle part of described sealing spacer is uniformly distributed four round tube holes and described seal cartridge forms an O RunddichtringO.

Further, the number of the shallow tooth of described V-type is 3 ~ 8.

Further, the diameter of described round tube hole is 20mm.

The utility model has following beneficial effect: the roots blower of the combined sealed device of band described in the utility model, draw together power rotor, driven rotor, main fuel tank, drop tank, front wallboard, rear wall plate, casing, driving gear, driven gear, bearing, bearing support and bearing gland, also comprise combined sealed device, wherein, combined sealed device comprises seal cartridge, sealing spacer, outside framework oil seal group and O RunddichtringO; First the utility model changes common sealing configuration into combined sealed device, and combined sealed device is directly installed on wallboard and processes, and decreases manufacturing procedure, improves precision and the coaxality of workpiece; Secondly adopt outside framework oil seal group to have structure simple, mounting or dismounting are convenient, with low cost, good sealing effect, to working environment and the feature such as maintaining is less demanding.

Accompanying drawing illustrates:

Fig. 1 is structural representation of the present utility model.

Fig. 2 is I portion enlarged diagram in Fig. 1.

Fig. 3 is II portion enlarged diagram in Fig. 2.

Embodiment:

With reference to Fig. 1, Fig. 2, Fig. 3, this embodiment is by the following technical solutions: with the roots blower of combined sealed device, comprise power rotor 5, driven rotor 3, main fuel tank 9, drop tank 1, front wallboard 6, rear wall plate 8, casing 7, driving gear 12, driven gear 11, bearing 4, bearing support 2 and bearing gland 10, also comprise combined sealed device, described combined sealed device comprises seal cartridge 15, sealing spacer 14, outside framework oil seal group and O RunddichtringO 13; The axle of described power rotor 5 and driven rotor 3 is all fixed with described seal cartridge 15,15mm place, described seal cartridge 15 front end is provided with the shallow tooth 16 of V-type, wherein, the number of the shallow tooth 16 of described V-type is 3 ~ 8, in the present embodiment, by the shallow tooth of V-type 16, good recoil is served to the pressurized gas entering gap, make gas throttling, thus minimizing is leaked and gas impacts outside framework oil seal group, improve outside framework oil seal group working life, the rear end of described seal cartridge 15 is provided with the higher light cover 17 of degree of finish.

Described light cover 17 is provided with described outside framework oil seal group, described outside framework oil seal group comprises first group of outside framework oil seal and second group of outside framework oil seal, described first group of outside framework oil seal comprises two the first oil sealings 18, described second group of outside framework oil seal comprises two the second oil sealings 19, described two the first oil sealings 18 are arranged on the inner side of the inner chamber of described front wallboard 6 processing back-to-back, described two the second oil sealings 19 are arranged on the outside of the inner chamber of described front wallboard 6 processing, described sealing spacer 14 is adopted to separate in the middle of described first group of outside framework oil seal and second group of outside framework oil seal, in the present embodiment, when mounted less demanding, rotor shaft is allowed to have the displacement of a timing, the required precision that this reduces processing and install, thus easily manufactured, to working environment and maintaining less demanding, the middle part of described sealing spacer 14 is uniformly distributed four round tube holes 20 and forms an O RunddichtringO 13 with described seal cartridge 15, wherein, the diameter of these four round tube holes 20 is 20mm, lubricating grease is added to O RunddichtringO 13 by oiling lubricating apparatus 21, lubricate outside framework oil seal group, therefore frictional force is little, decreases power consumption, lubricating grease is added to O RunddichtringO 13 simultaneously and also have fine sealing effect, further increase the efficiency of sealability and blower fan.

In addition, Leakage Gas is in a small amount there is for a long time afterwards out in the present embodiment at fan operation, the gas leaked out enters between the space of wallboard, panel tops connects gas-returning devices 23 by muffler 22 and is connected with the import of blower, owing to producing negative pressure during blower inlet air draught, thus the gas leaked enter wallboard space after very fast being inhaled in blower inlet, thus gas can not be made to enter in fuel tank and cause deterioration of oil, thus ensure that the stability of fan operation.

What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, other amendments that those of ordinary skill in the art make the technical solution of the utility model or equivalently to replace, only otherwise depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of right of the present utility model.

Claims

1. be with the roots blower of combined sealed device, comprise power rotor (5), driven rotor (3), main fuel tank (9), drop tank (1), front wallboard (6), rear wall plate (8), casing (7), driving gear (12), driven gear (11), bearing (4), bearing support (2) and bearing gland (10), it is characterized in that, also comprise combined sealed device, described combined sealed device comprises seal cartridge (15), sealing spacer (14), outside framework oil seal group and O RunddichtringO (13); The axle of described power rotor (5) and driven rotor (3) is all fixed with described seal cartridge (15), 15mm place, described seal cartridge (15) front end is provided with the shallow tooth of V-type (16), and the rear end of described seal cartridge (15) is provided with light cover (17);

Described light cover (17) is provided with described outside framework oil seal group, described outside framework oil seal group comprises first group of outside framework oil seal and second group of outside framework oil seal, described first group of outside framework oil seal comprises two the first oil sealings (18), described second group of outside framework oil seal comprises two the second oil sealings (19), described two the first oil sealings (18) are arranged on the inner side of the inner chamber that described front wallboard (6) is processed back-to-back, described two the second oil sealings (19) are arranged on the outside of the inner chamber that described front wallboard (6) is processed, described sealing spacer (14) is adopted to separate in the middle of described first group of outside framework oil seal and second group of outside framework oil seal, the middle part of described sealing spacer (14) is uniformly distributed four round tube holes (20) and forms an O RunddichtringO (13) with described seal cartridge (15).

2. the roots blower of the combined sealed device of band according to claim 1, is characterized in that, the number of the shallow tooth of described V-type (16) is 3 ~ 8.

3. the roots blower of the combined sealed device of band according to claim 1, is characterized in that, the diameter of described round tube hole (20) is 20mm.