CN203939701U

CN203939701U - One can compensate interior engagement rotary type screw pump assembly

Info

Publication number: CN203939701U
Application number: CN201420112581.3U
Authority: CN
Inventors: 毛渝斌
Original assignee: Chongqing Mei Shi Hydroelectric Facility Manufactory
Current assignee: Chongqing Mei Shi Hydroelectric Facility Manufactory
Priority date: 2014-03-12
Filing date: 2014-03-12
Publication date: 2014-11-12
Anticipated expiration: 2024-03-12

Abstract

The utility model provides one can compensate interior engagement rotary type screw pump assembly, comprise stator, stator gland nut, pipe box, barometer, tracheae, air back valve, rotor etc., the utility model utilizes between pipe box and stator and leaves gap, on pipe box, there is air back valve and connect tracheae and pour high-pressure air, read the pressure of air to stator by the barometer on pipe box, stator makes it tightly encase rotor under the pressure of air, in the time that stator rotor weares and teares, pressure gauge pressure declines, make pressure recover just to have realized wear compensation as long as pour again high-pressure air, thereby having solved well stator in prior art is easily worn and then causes operating cost to increase and the problem of operating efficiency.

Description

One can compensate interior engagement rotary type screw pump assembly

Technical field

The utility model relates to hauling operation mechanical field, more specifically, particularly relates to a kind of for the screw pump on mortar blending device.

Background technique

Screw pump is to rely on engaging that the pump housing forms with screw rod spatial volume changes and movement is carried liquid or made it the rotary pump of supercharging.Existing screw pump is in use found, the stator and the rotor that are positioned at screw pump inside are worn very soon because phase mutual friction causes stator, need often to change, thereby make the increase of operating cost, simultaneously because needs are often changed stator component and then can affect the efficiency of overall operation.

Model utility content

In view of being somebody's turn to do above, the purpose of this utility model is to provide one can compensate interior engagement rotary type screw pump assembly, the problem that is easily worn and then causes operating cost increase and operating efficiency for solving prior art stator.

For achieving the above object and other relevant objects, the utility model provides following technological scheme:

One can compensate interior engagement rotary type screw pump assembly, comprising: have the pipe box of cavity, on the outer surface at the two ends of this pipe box, be respectively equipped with outside thread, and the outer surface at this pipe box middle part is also provided with the first perforate and the second perforate that are communicated in this cavity on being; Be connected in the barometer in this first perforate; Be connected in the tracheae in this second perforate; Through the rotor in this cavity, this two ends of rotor is stretched out respectively the two ends of this pipe box; For being socketed on, this cavity is inner and be coated on the stator on this rotor outer surface, and the two ends of this stator are stretched out respectively between the two ends of this pipe box and this stator and the internal surface of this pipe box cavity and had gap; Be connected in the gland nut at these pipe box two ends, on this gland nut, have and hold the through hole that passes of this rotor and for the interior threaded hole that is bolted in these pipe box two ends, wherein between this through hole and interior threaded hole, be also provided with a heavy stand for these stator both ends of the surface of clamping.

Preferably, be connected between tracheae in the first perforate and this second perforate and be also provided with an air back valve.

Preferably, this stator is nitrile rubber.

Preferably, this rotor is spiral helicine pump rod.

As mentioned above, the utlity model has following beneficial effect: by the tracheae input high-pressure air in the second perforate, stator is tightly encased rotor under the pressure of air, in the time that stator rotor weares and teares, pressure gauge pressure declines, and makes pressure recover just to have realized wear compensation, thereby greatly saved the consume of stator as long as pour air again, owing to not needing often to change stator, also make operating efficiency improve.

Brief description of the drawings

In order to be illustrated more clearly in the scheme in the utility model embodiment, to accompanying drawing that describe required use in specific embodiment be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those skilled in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

A kind of structural representation that compensates interior engagement rotary type screw pump assembly that Fig. 1 provides in one embodiment for the utility model.

Fig. 2 is shown as a kind of structural representation that compensates interior engagement rotary type screw pump assembly that this practicality provides in another specific embodiment.

Drawing reference numeral explanation

1 pipe box

2 stators

3 rotors

4 gland nuts

5 barometers

6 tracheaes

7 air back valves

8 sponges with holes

9 springs

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on embodiment of the present utility model, all other embodiments that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belong to the scope that the utility model is protected.

Scheme one

See Fig. 1, show a kind of structural representation that compensates interior engagement rotary type screw pump assembly that the utility model provides in one embodiment, the utility model is mainly used on mortar blending device, as shown in the figure, described one can compensate interior engagement rotary type screw pump assembly, comprise: there is the pipe box 1 of cavity, on the outer surface at the two ends of this pipe box 1, be respectively equipped with outside thread, and the outer surface at this pipe box 1 middle part is also provided with the first perforate and the second perforate that are communicated in this cavity on being; Be connected in the barometer 5 in this first perforate; Be connected in the tracheae 6 in this second perforate; Through the rotor 3 in this cavity, the two ends that this pipe box 1 is stretched out respectively at these rotor 3 two ends; For being socketed on, this cavity is inner and be coated on the stator 2 on these rotor 3 outer surfaces, and the two ends of this stator 2 are stretched out respectively between the two ends of this pipe box 1 and this stator 2 and the internal surface of this pipe box 1 cavity and had gap; Be connected in the gland nut 4 at these pipe box 1 two ends, on this gland nut 4, have and hold the through hole that passes of this rotor 3 and for the interior threaded hole that is bolted in these pipe box 1 two ends, wherein between this through hole and interior threaded hole, be also provided with a heavy stand for these stator 2 both ends of the surface of clamping.

Particularly, in above technological scheme, be connected between tracheae 6 in the first perforate and this second perforate and be also provided with an air back valve 7, it can reflux for the high-pressure air that prevents from inputting from tracheae 6; In addition, described stator 2 is nitrile rubber, and described rotor 3 is spiral helicine pump rod.

Scheme two

On the basis of scheme one, the utility model has also proposed another optimized project, see Fig. 2, a kind of structural representation that compensates interior engagement rotary type screw pump assembly providing in another specific embodiment for this practicality is provided, with scheme one difference be, unexpected except comprising a kind of all technological schemes of scheme, this programme two also comprises sponge 8 with holes and multiple spring 9; Particularly, in gap between this stator 2 and the internal surface of this pipe box 1 cavity, lay one deck sponge 8 with holes, in addition, this sponge 8 with holes is connected in by spring 9 on the internal surface of this pipe box 1 cavity, wherein, specifically comprise at least six described springs 9, described six springs 9 are divided into and are divided into two groups and are and are arranged on symmetrically in described stator 2 both side surface, each group at least has three springs 9, and the spring 9 of this each group is arranged on respectively the two ends of described stator 2 and the centre of described stator 2.

In scheme two, further improve the degree of being close between described stator 2 and rotor 3 by setting up one deck sponge 8 with holes and spring 9, the power that simultaneously reduces extraneous high-pressure air input can utilize low power high-pressure air equipment can reach job requirements on the basis of scheme two.

In sum, the utility model utilizes between pipe box 1 and stator 2 and leaves gap, on pipe box 1, there is air back valve 7 and connect tracheae 6 and pour high-pressure air, read the pressure of air to stator 2 by the barometer 5 on pipe box 1, stator 2 makes it tightly encase rotor 3 under the pressure of air, in the time that stator 2 rotors 3 wear and tear, pressure gauge pressure declines, make pressure recover just to have realized wear compensation as long as pour again high-pressure air, be easily worn and then cause operating cost to increase and the problem of operating efficiency thereby solved well stator 2 in prior art.So the utility model has effectively overcome various shortcoming of the prior art and tool high industrial utilization.

Claims

1. can compensate an interior engagement rotary type screw pump assembly, it is characterized in that, comprise:

There is the pipe box of cavity, on the outer surface at the two ends of this pipe box, be respectively equipped with outside thread, and the outer surface at this pipe box middle part is also provided with the first perforate and the second perforate that are communicated in this cavity on being;

Be connected in the barometer in this first perforate;

Be connected in the tracheae in this second perforate;

Through the rotor in this cavity, this two ends of rotor is stretched out respectively the two ends of this pipe box;

For being socketed on, this cavity is inner and be coated on the stator on this rotor outer surface, and the two ends of this stator are stretched out respectively between the two ends of this pipe box and this stator and the internal surface of this pipe box cavity and had gap;

Be connected in the gland nut at these pipe box two ends, on this gland nut, have and hold the through hole that passes of this rotor and for the interior threaded hole that is bolted in these pipe box two ends, wherein between this through hole and interior threaded hole, be also provided with a heavy stand for these stator both ends of the surface of clamping.

2. according to claim 1ly compensate interior engagement rotary type screw pump assembly, it is characterized in that, be connected between tracheae in the first perforate and this second perforate and be also provided with an air back valve.

3. according to claim 1ly compensate interior engagement rotary type screw pump assembly, it is characterized in that, this stator is that nitrile rubber is formulated and formed.

4. according to claim 1ly compensate interior engagement rotary type screw pump assembly, it is characterized in that, this rotor is spiral helicine pump rod.