CN201547021U - Novel high-efficiency energy-saving pump - Google Patents

Abstract

A novel high-efficiency energy-saving pump comprises a water absorption chamber, an impeller, a pump body, a sealing ring of the pump body and a sealing ring of the impeller, wherein the water absorption chamber is formed by two parts of a straight conical water absorption chamber and a straight tube section at the outlet end of the straight conical water absorption chamber, and a inclined clapboard is arranged in the straight tube section. The utility model has the beneficial effects that: the liquid flow at the outlet of the water adsorption chamber generates circumferential circulation, so the impact loss of the inlet of the impeller is reduced, and the efficiency of the pump is improved; the leakage rate of the sealing rings and a lengthened separation tongue gap is reduced, and the leakage loss is lowered; and the sealing rings have good sealing performance and long service lives, and are particularly suitable for application occasions with conveying mediums containing solid particles.

Description

Novel high-efficient energy-saving pump

Technical field

The utility model relates to a kind of high efficiency energy saving pump, is applicable to various centrifugal pumps.

Background technique

The pump series products is one of important universal machine product that is widely used in each field of national economy, and annual power consumption reduces the energy loss of centrifugal pump inside up to 18%～22% of national generating capacity, and exploitation high efficiency energy saving pump product is imperative.Axially suction line is straight-tapered or straight tube shape with the pump suction chamber, and liquid stream enters impeller by suction chamber, and velocity attitude is undergone mutation, and causes bigger impact loss at impeller eye.The mechanical energy that is transferred medium absorption prime mover changes pressure energy and the kinetic energy of self into, the self-priming hydroecium enters impeller to the pump housing and exports, hydrodynamic pressure raises gradually, for stoping the pump internal flow to flow to low pressure area by the zone of high pressure, reduce the gap between the inner sound component of pump in the design process, to reduce the clearance leakage loss as far as possible.When fed sheet of a media contained particle, because of the too small serious wear of seal clearance, the life-span shortened greatly.Because there is big gap in the cut water district in the vibration noise, the pump housing, liquid stream is flowed to low pressure area by the pumping chamber zone of high pressure, and leakage loss is bigger.

The conventional centrifugal pump structurally has the following disadvantages: 1. the straight-tapered suction chamber can not provide good impeller eye Flow Field Distribution, and the impeller eye impact loss is bigger; 2. sealing ring gap is influenced by fed sheet of a media, and seal ring leakage loss is bigger; 3. the gap leakage flow rate in cut water zone is bigger.

Summary of the invention

The deficiency that prior art intermediate gap leakage loss is big, efficient is low in order to overcome, the seal ring life-span is short, the utility model provide a kind of novel high-efficient energy-saving pump that loss is little, efficient is high, the seal ring life-span is long of revealing.

The technical solution of the utility model:

Novel high-efficient energy-saving pump comprises suction chamber, impeller, the pump housing, casing ring, impeller ring, it is characterized in that: described suction chamber is made of straight length two-part of straight-tapered suction chamber and outlet end thereof, establishes tilt clapboard in the described straight length.

Further, the true dip direction of described dividing plate is consistent with the impeller sense of rotation.

Further, described impeller ring outer side surface circumferentially is evenly distributed with guiding gutter.

Further, the described pump housing is with the lengthening cut water, and the gap between described lengthening cut water inner side surface and the impeller outer disc produces bigger resistance, forms the throttling arc surface; The outer molded lines of described lengthening cut water is the grade circular arc concentric with basic circle.

The structure of suction chamber described in the utility model can produce the circumferential component consistent with the impeller sense of rotation, makes fluid enter impeller channel by suction chamber, and velocity variations is more mild, and hydraulic loss is little, and the efficient of pump improves.

The equally distributed guiding gutter of described impeller ring outer side surface is suitable for carrying the medium that contains solid particle, good seal performance, long service life.General seal clearance is a ring, and the sealing ring gap leakage rate reduces and reduces with seal clearance, sees Fig. 5.Described impeller ring, because the existence of guiding gutter, the major diameter particle enters guiding gutter, and liquid in time washes away it into suction chamber, avoids causing seal wears or obstruction, and to the degree of wear reduction of sealing surface, prolong working life.Under action of centrifugal force, the liquid in the guiding gutter will produce a radial motion, increase hermetic resistance, strengthen sealing effect, reduce the seal ring leakage rate, improve the efficient of pump.

Be the minimum zone of pump housing internal pressure near the described cut water, reduce the spacing between basic circle and the impeller outer edge in the design process as far as possible, reduce capacity of reflux, but spacing is too little, the centrifugal pump vibration noise strengthens.Intersection point by pump housing helix and cut water place fillet in the traditional design forms throttling damping (line throttling, see Fig. 7), less gap between lengthening cut water inner side surface described in the utility model and the impeller outer disc, produce bigger resistance, form throttling arc surface (face throttling), effectively reduce liquid stream and flow to low pressure area, reduce leakage loss, improve the efficient of pump by the zone of high pressure.

The beneficial effects of the utility model: there is circumferential circular rector in suction chamber outlet liquid stream, and the impeller eye impact loss reduces, and pump efficiency improves; Seal ring and lengthening cut water place gap leakage flow rate reduce, and leakage loss reduces; The seal ring seal performance is good, and long service life is particularly useful for the application that fed sheet of a media contains solid particle.

Description of drawings

Fig. 1 is that constructional device of the present utility model is always schemed.

Fig. 2 is the structural representation of the utility model straight length.

Fig. 3 is the enlarged view at the utility model a place in Fig. 1.

Fig. 4 is the utility model impeller ring planimetric map.

Fig. 5 is a conventional impellers seal ring planimetric map.

Fig. 6 is the utility model pump housing lengthening cut water structural representation.

Fig. 7 is common cut water structural representation.

Embodiment

With reference to Fig. 1-7, novel high-efficient energy-saving pump, comprise suction chamber 1, impeller 2, the pump housing 3, casing ring 4, impeller ring 5 and other universal components, described suction chamber 1 is made of straight length 12 two-part of straight-tapered suction chamber 11 and outlet end thereof, establishes tilt clapboard 12a in the described straight length 12.

The true dip direction of described dividing plate 12a is consistent with impeller 2 sense of rotation.

Described impeller ring 5 outer side surfaces circumferentially are evenly distributed with guiding gutter 51.

The described pump housing 3 is with lengthening cut water 31, and the less gap between described lengthening cut water 31 inner side surfaces and impeller 2 peripheries produces bigger resistance, forms throttling arc surface 31a; The outer molded lines of described lengthening cut water 31 be with basic circle 32 concentric wait circular arc.

The described content of this specification embodiment only is enumerating the way of realization of model utility design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.

Claims (4)

1. novel high-efficient energy-saving pump comprises suction chamber, impeller, the pump housing, casing ring, impeller ring, it is characterized in that: described suction chamber is made of straight length two-part of straight-tapered suction chamber and outlet end thereof, establishes tilt clapboard in the described straight length.

2. novel high-efficient energy-saving pump according to claim 1 is characterized in that: the true dip direction of described dividing plate is consistent with the impeller sense of rotation.

3. novel high-efficient energy-saving pump according to claim 1 and 2 is characterized in that: described impeller ring outer side surface circumferentially is evenly distributed with guiding gutter.

4. novel high-efficient energy-saving pump according to claim 3 is characterized in that: the described pump housing is with the lengthening cut water, and the gap between described lengthening cut water inner side surface and the impeller outer disc produces bigger resistance, forms the throttling arc surface; The outer molded lines of described lengthening cut water is the grade circular arc concentric with basic circle.

Images