A kind of rotational flow self-priming pump
Technical field
The present invention relates to self-priming pump field, is especially a kind of rotational flow self-priming pump.
Background technique
Existing self-priming pump product adopts centrifugal pump structure, and it is by the pump housing, impeller, pump cover, seal ring, sealed member, and bearing part is formed, the running clearance in high and low pressure chamber in pump, realizes sealing with seal ring.There is following shortcoming in it: centrifugal pump impeller, when pumping containing solid matter, especially when pumping the liquid containing fibre object, runner blocking easily occurs; After long-play, in sewage occasion, pump seal ring portion position meeting Fast Wearing, causes pump performance to decline; Pump suction chamber presses flow passage structure design, and unsuitable opening or cleaning reason hand hole, during Severe blockage, will disintegrate to pump, could clear up.Workload is large, and the time is long.Bearing body part, without cooling system, during bearing heating, can affect pump and normally work.
Summary of the invention
The object of the invention is to solve the problem, and provides a kind of rotational flow self-priming pump, is specifically realized by following technological scheme:
A kind of rotational flow self-priming pump, comprises the pump housing, impeller, bearing part, pump cover, runner liner plate and front cover, and described pump body divides suction chamber, delivery chamber, liquid storage room, air-water separation chamber; Described suction chamber between front cover and runner liner plate, and is communicated with the inlet pipeline being connected to the pump housing, and described front cover is connected with the pump housing by handle nut; Described delivery chamber is relative with suction chamber level, and both interconnect via the duct of runner liner plate central authorities; Described pump cover is between described liquid storage room and described delivery chamber, and described bearing part makes its end be positioned at delivery chamber via described liquid storage room through described pump cover, thus the main body of described bearing part is immersed in liquid storage room; The end that described impeller and bearing part are positioned at delivery chamber is connected, formed without phyllocyst between impeller and runner liner plate, described impeller comprises multiple blade be distributed in around its center of rotation, described blade comprises near the joint of center of rotation and the homework department away from center of rotation, the width of described homework department is greater than described joint, the part that described runner liner plate is relative with described homework department is provided with the groove of annular, thus between blade and runner liner plate, form enough circular flow regions; Described air-water separation chamber is positioned at the top of described liquid storage room and is communicated with described liquid storage room, and the runner of described delivery chamber is communicated with the output pipe be connected on the pump housing through described air-water separation chamber.
Described rotational flow self-priming pump, it designs further and is, the top of described suction chamber is provided with the water-inlet cavity being positioned at air-water separation chamber side, and described inlet pipeline is connected to the side of water-inlet cavity, and the bottom of water-inlet cavity is communicated with described suction chamber.
Described rotational flow self-priming pump, it designs further and is, is provided with filter plate between described inlet pipeline and described water-inlet cavity.
Described rotational flow self-priming pump, it designs further and is, described bearing part comprise be positioned at liquid storage room support housing, rotating shaft and bearing, described rotating shaft is arranged in support housing rotationally by bearing, and the end of bearing is connected with the impeller being positioned at delivery chamber through described pump cover.
Described rotational flow self-priming pump, it designs further and is, the middle part of described pump cover is to the side protuberance being positioned at liquid storage room, and described rotating shaft is passed this bump pad thus entered delivery chamber, is provided with seal ring between this bump pad and rotating shaft.
Described rotational flow self-priming pump, its further design be, described pump cover and described support housing are tightly connected towards the side of delivery chamber.
Described rotational flow self-priming pump, it designs further and is, the bottom of described liquid storage room is provided with liquid outlet opening, and described liquid outlet opening is communicated with the bottom of described delivery chamber.
Described rotational flow self-priming pump, it designs further and is, the bottom of described liquid storage room, delivery chamber, suction chamber is provided with through apocenosis passage, described liquid outlet opening is communicated with described apocenosis passage thus is communicated with described delivery chamber, and apocenosis passage has the outlet being positioned at described front cover bottom, this outlet port is provided with dismountable plugging block.
In using process of the present invention, solid matter great majority are got rid of via without phyllocyst, do not enter impeller, can not produce wearing and tearing to impeller; Impeller place of the present invention is without seal ring, and the running clearance not depositing the pump housing and impeller upon wear increases, and the problem causing pump performance to decline; Utilize torque flow pump can pump the characteristic of the liquid containing certain gas simultaneously, expand the using scope of self-priming pump; Bearing part outer surface major part is submerged in pump housing bottom liquid storage room, during work, is cooled by the liquid pumped, has good cooling effect; Suction chamber of the present invention adopts Large Copacity design, and flow rate of liquid is low, and fluid resistance losses is little, effectively can reduce NPSH, improves the suction journey of pump; During generation Severe blockage of the present invention, scene without instrument, can twist off the nut of band handle, arrests the handle nut being fixed on detachable type front cover with hand, easily can take off detachable type front cover then to clear up pump suction chamber, other any part of pipeline and pump need not be moved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with Figure of description and embodiment, the present invention is further described.
As shown in Figure 1, this rotational flow self-priming pump comprises the pump housing 1, impeller 2, bearing part 3, pump cover 4, runner liner plate 5 and front cover 6, and pump body divides suction chamber 11, delivery chamber 12, liquid storage room 13, air-water separation chamber 14; Suction chamber between front cover and runner liner plate, and is communicated with the inlet pipeline being connected to the pump housing, and front cover is connected with the pump housing by handle nut 61; Delivery chamber is relative with suction chamber level, and both interconnect via the duct of runner liner plate 5 central authorities; Pump cover 4 is between liquid storage room and delivery chamber 12, and bearing part 3 makes its end be positioned at delivery chamber 12 via liquid storage room 13 through pump cover 4, thus the main body of bearing part is immersed in liquid storage room 13; The end that impeller 2 and bearing part are positioned at delivery chamber is connected, formed between impeller and runner liner plate without phyllocyst 121, impeller 2 comprises multiple blade 21 be distributed in around its center of rotation, blade comprises near the joint of center of rotation and the homework department away from center of rotation, the width of homework department is greater than joint, the part that runner liner plate 5 is relative with homework department is provided with the groove 51 of annular, thus between blade and runner liner plate, form enough circular flow regions; Air-water separation chamber 14 is positioned at the top of liquid storage room 13 and is communicated with liquid storage room, and the runner of delivery chamber is communicated with the output pipe 10 be connected on the pump housing through air-water separation chamber.
The top of suction chamber 11 is provided with the water-inlet cavity 15 being positioned at air-water separation chamber side, and inlet pipeline 7 is connected to the side of water-inlet cavity, and the bottom of water-inlet cavity is communicated with suction chamber.Filter plate 71 is provided with between inlet pipeline 7 and water-inlet cavity.
Bearing part 3 comprise be positioned at liquid storage room support housing 31, rotating shaft 32 and bearing 33, rotating shaft is arranged in support housing rotationally by bearing, and the end of bearing is connected with the impeller being positioned at delivery chamber through pump cover.
The middle part of pump cover 4 is to the side protuberance being positioned at liquid storage room, and rotating shaft is passed this bump pad thus entered delivery chamber, is provided with seal ring 9 between this bump pad and rotating shaft.Pump cover and support housing are tightly connected towards the side of delivery chamber.
The bottom of liquid storage room 13 is provided with liquid outlet opening 131, and liquid outlet opening 131 is communicated with the bottom of delivery chamber, thus supplies water to delivery chamber when the present invention starts.Further, the bottom of liquid storage room, delivery chamber, suction chamber is provided with through apocenosis passage 8, liquid outlet opening 131 is communicated with apocenosis passage thus is communicated with delivery chamber, and apocenosis passage has the outlet being positioned at front cover bottom, this outlet port is provided with dismountable plugging block 81, when needs are safeguarded, the water discharge that pump body retains by this plugging block can be taken out.
In using process of the present invention, solid matter great majority are got rid of via without phyllocyst, do not enter impeller, can not produce wearing and tearing to impeller; Impeller place of the present invention is without seal ring, and the running clearance not depositing the pump housing and impeller upon wear increases, and the problem causing pump performance to decline; Utilize torque flow pump can pump the characteristic of the liquid containing certain gas simultaneously, expand the using scope of self-priming pump; Bearing part outer surface major part is submerged in pump housing bottom liquid storage room, during work, is cooled by the liquid pumped, has good cooling effect; Suction chamber of the present invention adopts Large Copacity design, and flow rate of liquid is low, and fluid resistance losses is little, effectively can reduce NPSH, improves the suction journey of pump; During generation Severe blockage of the present invention, scene without instrument, can twist off the nut of band handle, arrests the handle nut being fixed on detachable type front cover with hand, easily can take off detachable type front cover then to clear up pump suction chamber, other any part of pipeline and pump need not be moved.