A kind of fire water pump sealed type transmission device
Technical field
The utility model relates to a kind of transmission device, more particularly, relates to a kind of fire water pump sealed type transmission device.
Background technique
Deep-well pump is to immerse a kind of pump that aspirates and carry water in underground water well, is applied to fire-fighting cause.During due to installation, deep-well pump all need be immersed in water, motor is positioned at the bottom of deep-well, therefore uses deep-well pump to have the problem that installation requirement is high, Security is low.In order to overcome when using deep-well pump the bottom that is positioned at deep-well because of motor, cause the low problem of Security, user considers use long-shaft pump.Long-shaft pump belongs to a kind of of centrifugal pump, its impeller is contained in well below dynamic water level, power engine is arranged on aboveground, by transmission long axis drives impeller, in blower inlet casing, rotate, current are along the runner between blower inlet casing and impeller, through conduit pipe, upwards rise to ground, when lift is high, can adopt the multistage centrifugal pump of a plurality of impeller serials.But the sealing of the transmission device of long-shaft pump is poor, while therefore long-shaft pump being installed, motor and transmission device can only be placed in to water surface top in the lump, while therefore using long-shaft pump, there is following problem: 1, in the colder place of weather, the part that does not immerse water surface below in long-shaft pump is prone to the problem of bursting by freezing; While 2, bringing into use, need to first carry out exhaust, water outlet immediately, causes immeasurable loss to user; 3, the partial volume surfacing in long-shaft pump is larger, takes up room large.
Summary of the invention
1. the technical problem that model utility will solve
The purpose of this utility model is to overcome the poor deficiency of transmission device sealing of fire water pump in prior art, a kind of fire water pump sealed type transmission device is provided, adopt the technical solution of the utility model, simple in structure, easy for installation, good airproof performance, can not only adapt to the transmission shaft of different length, and can adapt to different installation directions.
2. technological scheme
For achieving the above object, the technological scheme that the utility model provides is:
A kind of fire water pump sealed type transmission device of the present utility model, comprises transmission shaft, and the top of described transmission shaft is arranged with for carrying the first upper bearing (metal) from the radial force of transmission shaft; The top of the first described upper bearing (metal) is provided with upper chamber, is provided with the upper mechanical seal being set on transmission shaft in this upper chamber inner chamber; The bottom of described transmission shaft is arranged with for carrying the first lower bearing from the radial force of transmission shaft; The below of the first described lower bearing is provided with lower oil chamber, in this lower oil chamber's inner chamber, is provided with and is set in lower mechanical seal; Between the first described upper bearing (metal) and the first lower bearing, be provided with the sleeve that is set in transmission shaft middle part.
Further, the middle part of described transmission shaft is arranged with a pair or more of bearing, and the every pair of bearing adopts and can bear bearing that radial load can bear again thrust load and form or adopt constituting of the bearing that bears the bearing of radial load and bear thrust load.
Further, the bearing at the described middle part that is positioned at transmission shaft is arranged on sleeve, and this sleeve is the sleeve with bearing support.
Further, the described bearing that is positioned at transmission shaft middle part is arranged on bearing support, and this bearing support is arranged between adjacent sleeve.
Further, the described bearing that is positioned at transmission shaft middle part is deep groove ball bearing.
Further, between the first described lower bearing and lower mechanical seal, be provided with and be set on transmission shaft for carrying the second bearing from the axial force of transmission shaft.
Further, between described upper chamber and transmission shaft and between lower oil chamber and transmission shaft, be provided with outside framework oil seal.
Further, described upper chamber consists of upper chamber A and upper chamber B, and the joint of this upper chamber A and upper chamber B is provided with seal ring; Described lower oil chamber consists of the A of lower oil chamber and the B of lower oil chamber, and the joint of the A of this lower oil chamber and the B of lower oil chamber is provided with seal ring.
Further, described upper mechanical seal and lower mechanical seal form by spring, rotating ring and stationary ring.
Further, the first described upper bearing (metal), the first lower bearing are deep groove ball bearing; The second described bearing is tapered roller bearing.
3. beneficial effect
The technological scheme that adopts the utility model to provide, compares with existing known technology, has following beneficial effect:
(1) a kind of fire water pump sealed type transmission device of the present utility model, the top of its first upper bearing (metal) is provided with upper chamber, in this upper chamber inner chamber, be provided with the upper mechanical seal being set on transmission shaft, the below of the first lower bearing is provided with lower oil chamber, in this lower oil chamber's inner chamber, be provided with and be set in lower mechanical seal, by setting up the object that reaches sealing with the lower oil chamber of the upper chamber of upper mechanical seal and the lower mechanical seal of band, not only simple in structure, easy for installation, and good airproof performance;
(2) a kind of fire water pump sealed type transmission device of the present utility model, the middle part of its transmission shaft is arranged with a pair or more of bearing, the every pair of bearing adopts and can bear bearing that radial load can bear again thrust load and form or adopt constituting of the bearing that bears the bearing of radial load and bear thrust load, can prevent that the first upper bearing (metal) when transmission shaft is long, the first lower bearing and the second bearing are not enough to carry radial force and the axial force of transmission shaft, can be applicable to the transmission shaft of different length;
(3) a kind of fire water pump sealed type transmission device of the present utility model, between its first lower bearing and lower mechanical seal, be provided with and be set on transmission shaft for carrying the second bearing from the axial force of transmission shaft, not only can adapt to vertical placement, and can adaptation level place, make accommodation wider;
(4) a kind of fire water pump sealed type transmission device of the present utility model, is provided with outside framework oil seal between its upper chamber and transmission shaft and between lower oil chamber and transmission shaft, has strengthened sealing, and sealing effect is better;
(5) a kind of fire water pump sealed type transmission device of the present utility model, its upper chamber consists of upper chamber A and upper chamber B, and the joint of this upper chamber A and upper chamber B is provided with seal ring, lower oil chamber consists of the A of lower oil chamber and the B of lower oil chamber, the joint of the A of Qie Gai lower oil chamber and the B of lower oil chamber is provided with seal ring, prevent that the oil in upper chamber and lower oil chamber's inner chamber from leaking, good sealing effect;
(6) a kind of fire water pump sealed type transmission device of the present utility model, it is simple in structure, easy for installation, good airproof performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of sealed type transmission device for a kind of fire water pump of the present utility model;
Fig. 2 is the structural representation of embodiment 2 in the utility model;
Fig. 3 is the structural representation of embodiment 3 in the utility model.
Label declaration in schematic diagram: 1, transmission shaft; 2, upper mechanical seal; 3, the first upper bearing (metal); 4, the first lower bearing; 5, the second bearing; 6, lower mechanical seal; 7, sleeve; 8, upper chamber A; 9, upper chamber B; 10, the B of lower oil chamber; 11, the A of lower oil chamber.
Embodiment
For further understanding content of the present utility model, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
In conjunction with Fig. 1, a kind of fire water pump sealed type transmission device of the present embodiment, comprises transmission shaft 1, and the top of transmission shaft 1 is arranged with for carrying the first upper bearing (metal) 3 from the radial force of transmission shaft 1, and in the present embodiment, the first upper bearing (metal) 3 is deep groove ball bearing; The top of the first upper bearing (metal) 3 is provided with upper chamber, in order to strengthen sealing, make sealing effect better, between upper chamber and transmission shaft 1, be provided with outside framework oil seal, in the present embodiment, upper chamber consists of upper chamber A8 and upper chamber B9, and the joint of this upper chamber A8 and upper chamber B9 is provided with seal ring, prevent that the oil in upper chamber inner chamber from leaking, good sealing effect; In this upper chamber inner chamber, be provided with the upper mechanical seal 2 being set on transmission shaft 1, in the present embodiment, upper mechanical seal 2 consists of spring, rotating ring and stationary ring; The bottom of transmission shaft 1 is arranged with for carrying the first lower bearing 4 from the radial force of transmission shaft 1, and in the present embodiment, the first lower bearing 4 is deep groove ball bearing; The below of the first lower bearing 4 is provided with lower oil chamber, in order to strengthen sealing, make sealing effect better, between lower oil chamber and transmission shaft 1, be provided with outside framework oil seal, in the present embodiment, lower oil chamber consists of the B10 of A11He lower oil chamber of lower oil chamber, the joint of the B10 of A11He lower oil chamber of Qie Gai lower oil chamber is provided with seal ring, prevents that the oil in lower oil chamber's inner chamber from leaking, good sealing effect; In this lower oil chamber's inner chamber, be provided with and be set in lower mechanical seal 6, in the present embodiment, by spring, rotating ring and stationary ring, formed; By setting up the object that reaches sealing with the lower oil chamber of the upper chamber of upper mechanical seal 2 and the lower mechanical seal 6 of band, not only simple in structure, easy for installation, and good airproof performance; Between the first upper bearing (metal) 3 and the first lower bearing 4, be provided with the sleeve 7 that is set in transmission shaft 1 middle part; In order to adapt to vertical placement, and can adaptation level place, make accommodation wider, between the first lower bearing 4 and lower mechanical seal 6, be provided with and be set on transmission shaft 1 for carrying the second bearing 5 from the axial force of transmission shaft 1, in the present embodiment, the second bearing 5 is tapered roller bearing.
Embodiment 2
In conjunction with Fig. 2, a kind of fire water pump of the present embodiment uses the basic structure of sealed type transmission device with embodiment 1, difference is: in order to be applicable to the transmission shaft 1 of different length, the middle part of transmission shaft 1 is arranged with a pair or more of bearing and all can, the every pair of bearing adopts and can bear bearing that radial load can bear again thrust load and form or adopt constituting of the bearing that bears the bearing of radial load and bear thrust load, middle part specific to transmission shaft in the present embodiment 1 is arranged with pair of bearings, this pair of bearings is arranged on sleeve 7, this sleeve 7 is the sleeve with bearing support, the present embodiment middle (center) bearing is deep groove ball bearing.
Embodiment 3
In conjunction with Fig. 3, a kind of fire water pump of the present embodiment uses the basic structure of sealed type transmission device with embodiment 1, difference is: in order to be used in the transmission shaft 1 of different length, the middle part of transmission shaft 1 is arranged with a pair or more of bearing and all can, the every pair of bearing adopts and can bear bearing that radial load can bear again thrust load and form or adopt constituting of the bearing that bears the bearing of radial load and bear thrust load, middle part specific to transmission shaft in the present embodiment 1 is arranged with pair of bearings, this pair of bearings is arranged on bearing support, this bearing support is arranged between adjacent sleeve 7, the present embodiment middle (center) bearing is deep groove ball bearing.
Sealed type transmission device of the present utility model, simple in structure, easy for installation, good airproof performance, can not only adapt to the transmission shaft 1 of different length, and can adapt to different installation directions.
Below schematically the utility model and mode of execution thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of mode of execution of the present utility model, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that not departing from the utility model creation aim, without the creationary mode of structure similar to this technological scheme and the embodiment of designing, all should belong to protection domain of the present utility model.