CN2391035Y

CN2391035Y - Acid and alkali-resisting self priming pump

Info

Publication number: CN2391035Y
Application number: CN 99246708
Authority: CN
Inventors: 唐少军
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-10-14
Filing date: 1999-10-14
Publication date: 2000-08-09
Anticipated expiration: 2009-10-14

Abstract

The utility model discloses an acid and alkali resisting self priming pump composed of a motor, a shaft coupling, a propeller shaft, a pump body and a seal box. The pump body is installed inside the seal box provided with a liquid inlet and a liquid outlet. Because the seal box is completely sealed, while in use, the liquid is sucked into a box body by self priming, largely increasing the pumpage. The utility model has no leakage and is free from the limitation of installation yard. The utility model has the advantages of low cost and corrosion prevention and can be widely used in various industries, such as chemical industry, machinery, metallurgy, bergol, agriculture and medicine. The utility model is an ideal acid and alkali resisting power device.

Description

The acid resistant alkali self-priming pump

The utility model relates to a kind of self-priming pump, especially a kind of acid resistant alkali self-priming pump.

At present, the domestic various acid and alkali-proof pumps that use all are monomial, promptly motor of a pump owing to there is not self-priming apparatus, must be considered the home of pump in the using process, install and use very inconvenient, simultaneously, because the corrosion of strong acid or highly basic, the cross-linking part of motor shaft and pump case requires sealing quite strict, do not allow any gas leakage problems, otherwise can not work behind the suction air, and common seal arrangement can not strong alkali-acid resistance, working life is short, fragile, cause evaporating, emitting, dripping or leaking of liquid or gas, the higher quality seal device is quite expensive, causes the cost height, do not have self-absorption function, use and be subjected to certain restriction.

The purpose of this invention is to provide a kind of acid and alkali-proof pump that can self-priming, the seal arrangement of this pump is simple and reliable, utilizes the automatic inspiration liquid of vacuum or principle of negative pressure and carries liquid.

The utility model realizes that in the following manner it comprises motor, coupling, transmission shaft, the pump housing, connecting tube, flange, reaches sealed case; Transmission shaft one end is connected by transmission coupling with motor, the other end and the pump housing link, the outlet of the connecting tube and the pump housing is joined, there is an end cap sealed case upper end, and a liquid entering hole and a liquid outlet are arranged on the end cap, and liquid outlet and connecting tube join, the sealed case side, there is a spout upper end, and there is a sewage draining exit lower end, and a support is installed in the sealed case, the support upper end is fixed together with end cap, the lower end and the pump housing are fixed together, and also fix a casing arm on the end cap of sealed case, and casing arm upper end is fixed together with motor housing, support and casing arm all are sealed attachment, form two cavitys, transmission shaft is a stock, is positioned at two cavitys.

After adopting this structure, motor, the pump housing and self-priming apparatus are combined, and installation side is easy to maintenance, and seal arrangement is easy to be reliable, do not leak, be not subjected to the restriction of site location, cost is low, and the saving of labor is energy-conservation, self-absorption function is strong, and the energy acid resistant alkali is widely used in chemical industry, machinery, metallurgy, oil, agricultural, medical industry-by-industry, is that general acid and alkali pumps and anti-corrosive pump are incomparable.

Be described in further details below in conjunction with drawings and the specific embodiments.

Accompanying drawing is a structure sectional view of the present utility model;

As seen from the figure, the entire pump device comprises motor 1, coupling 4, transmission shaft 13, the pump housing 14, connecting tube 17, sealed case 9 and support 12, transmission shaft 13 is a stock, the upper end is linked by the axle of coupling 4 with motor 1, impeller (not drawing among the figure) in lower end and the pump housing 14 links to each other, the entire pump body is positioned at sealed case 9, there is an end cap 6 sealed case 9 upper ends, seal by seal ring 7 with casing, one liquid entering hole 5 and a liquid outlet 19 are arranged on the end cap 6, liquid outlet 5 links to each other with the pipeline of transferring raw material, liquid outlet 19 lower ends and connecting tube 17 are linked by flange 18, connecting tube 17 joins with the outlet 16 of the pump housing 14, on the shell of sealed case 9, near end caps one spout 8 is arranged, on the spout 8 valve is housed, there is a sewage draining exit 10 lower end at sealed case 9 near the bottom, valve also is housed, the pump housing 14 is fixed on the end cap 6 by support 12, between support 12 upper ends and the end cap 6 by sealing plate 11 sealed attachment, the lower end links to each other with the shell of the pump housing 14, form a cavity, on the end cap 6 of sealed case 9, also fix a casing arm 3, casing arm 3 tops and motor housing are by seal ring 2 sealed attachment, the upper end of transmission shaft 13 is in casing arm 3, and the lower end is positioned at support 12, and whole sealed case 9 inside seal fully.

When using first, liquid is injected in the sealing 9, after filling with along spout 8, close spout 8, start motor 1, under pressure, liquid enters in the pump housing 14 along the import 15 of the pump housing 14, enters liquid outlet 19 along outlet 16, flows to required place then, when the liquid level in the sealed case 9 descends, because inner sealing, under the effect of ambient pressure, liquid remains unchanged substantially, owing in the sealed case 9 liquid is arranged, then do not need fluid injection again when start shooting next time again, only need start to get final product work.Because its suction capacity is strong, when therefore the entire pump device being installed, need not consider its height and far and near position, greatly facilitate and install and use.

Claims

1, a kind of acid resistant alkali self-priming pump comprises motor (1), coupling (4), transmission shaft (13), the pump housing (14), connecting tube (17); Transmission shaft (13) one ends are connected by coupling (4) with motor (1), and the other end and the pump housing (14) link, and connecting tube (17) joins with the outlet (16) of the pump housing (14); It is characterized in that: it also has a sealed case (9), the pump housing (14) is positioned at sealed case (9), there is an end cap (6) sealed case (9) upper end, one liquid entering hole (5) and a liquid outlet (19) are arranged on the end cap (6), the lower end of liquid outlet (19) and connecting tube (17) join, there is a spout (8) side in sealed case (9), upper end, and there is a sewage draining exit (10) lower end.

2, a kind of acid resistant alkali self-priming pump according to claim 1 is characterized in that: sealed by seal ring (7) between end cap (6) and the sealed case (9).

3, a kind of acid resistant alkali self-priming pump according to claim 1 is characterized in that: a support (12) is installed in sealed case (9), and support (12) upper end is fixed together with end cap (6), and the lower end and the pump housing (14) are fixed together.

4, a kind of acid resistant alkali self-priming pump according to claim 1 is characterized in that: also fix a casing arm (3) on the end cap (6) of sealed case (9), casing arm (3) upper end is fixed together with the shell of motor (1).

5, according to claim 1 and 3 described a kind of acid resistant alkali self-priming pumps, it is characterized in that: between support (12) and end cap (6) and the pump housing (14) all is sealed attachment, forms a cavity.

6, according to claim 1 and 4 described a kind of acid resistant alkali self-priming pumps, it is characterized in that: sealed attachment between the shell of casing arm (3) and motor (1) forms a cavity.

7, a kind of acid resistant alkali self-priming pump according to claim 1, it is characterized in that: transmission shaft (13) is a stock, it is positioned at the cavity of casing arm (3) and support (12) formation.