CN2054096U

CN2054096U - Submerged pump made of corrosion-proof plastics

Info

Publication number: CN2054096U
Application number: CN 88217799
Authority: CN
Inventors: 于义根
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-12-21
Filing date: 1988-12-21
Publication date: 1990-03-07

Abstract

Disclosed is a submerged pump which is of vertical pump structure. A pump base, a mounting plate, and a bearing on the bottom end of a pump shaft are used to fix the pump shaft for guaranteeing the verticality of the pump shaft and the coaxiality of the pump shaft and reducing the dithering of a pump body when the submerged pump is used. On the mounting plate, a seal ring and an O-shaped ring are respectively arranged above the pump shaft and an outlet pipe for strengthening seal and preventing corrosive liquid and corrosive gas exuding. The outside of a pump pipe is provided with a reinforcing rib for enhancing mechanical strength. An inlet pipe and the outlet pipe which are both connected with a pump housing through inner screw threads and outer screw threads are easily assembled and disassembled. The utility model which has the advantages of reasonable structure and good seal performance can be positioned in acid liquor or various kinds of corrosive liquor for 1-2 years without being corroded and can be extensively suitable for an electroplating industry, a chemical industry, a textile industry, etc.

Description

Submerged pump made of corrosion-proof plastics

The utility model belongs to Under Water Pumps and makes the field, particularly relates to a kind of corrosion-resistant plastic Under Water Pumps, and it can place pumping liquid under various acid solutions and the strong corrosive media and can not be corroded.

Existing Under Water Pumps is to adopt metal structure mostly, and the pump housing will be immersed in acid solution or the various aggressive medium liquid during owing to use, therefore very easily damages.And some parts, though do not need directly to be immersed in the corrosive liquid as motor, pump shaft, pump line, bearing bracket stand, mounting plate etc., but because of not having resistant material cladding or complete machine structure sealing not strong, be placed on and spill in the time of to be subjected to pumping liquid unavoidably above the corrosion liquid or the indirect erosion of the direct corrosion of liquid body exudate or the etchant gas of from corrosive liquid, overflowing, have a strong impact on working life.If adopt acidproof or the corrosion resistant alloy steel, then cost will rise significantly.

The purpose of this utility model is that a kind of plastics Under Water Pumps that can overcome the many deficiencies of metal Under Water Pumps will be provided, it is separated into upper and lower two isolated mutually parts by mounting plate and top Sealing thereof with whole device, stops the etchant gas discharge channel with the parts more than the protection mounting plate; By adopting corrosion-resistant engineering plastics to make or cladding the parts that are positioned at below the mounting plate, reach the purpose that improves corrosion resistance.

Fig. 1 is a structure diagram of the present utility model.

Introduce in detail the structure of the utility model device below in conjunction with accompanying drawing.

As shown in Figure 1, the utility model adopts the vertical pump structure.It is by power motor 1, electric machine support 24, coupling 2, bearing cap 3; round nut 4, floor clip 5, bearing 6, seal ring 7; oil sealing 8,14, pump seat 9, gland 10, round section joint ring 11; fixing bolt 12, mounting plate 13, pump shaft 17 and protecting jacket thereof---pump line 16; bearing 18, pump case 19, impeller 20; pump cover 21, outer pipe 15, the inlet tube 23 of band filter is formed from top to bottom.Mounting plate 13 wherein, connection pump seat 9 and pump line 16 had both been played, the effect of intensifier overall mechanical strength, Sealing and the round section joint ring of side outer pipe 15 thereof that constitutes by the seal ring 7 that is equipped with above locating and oil sealing 8,14 by pump shaft on it 17 again by being provided with above the place, whole device is separated into upper and lower two isolated mutually parts, the etchant gas of having stopped the corrosive liquid that spills or effusion fully when its pumping liquid is the passage of infiltration upwards, has prevented the erosion of the parts such as motor, coupling, pump seat to mounting plate top effectively.And the pump shaft 17 of mounting plate downside, pump line 16, pump case 19, pump cover 20 etc. are immersed parts in the corrosive liquid, and then adopt the engineering plastics of the various acid and alkali corrosions of ability to make or clad, all can as PVC or ABS.Part without plastics then adopts corrosion-resistant metal materials, can reduce cost greatly on the one hand, makes complete machine have stronger corrosion resistance on the other hand.In order to strengthen the sealing of final assembly, the utility model also adopts the mode of hot blast welding that pump case is fused.Pump line also is equipped with some bar shaped stiffening ribs around the outside, to strengthen the support force to mounting plate.The suction pipe 22 of pump lowermost end, outer pipe 15 all adopt the mode of internal and external threads to link to each other with pump case, make convenient disassembly, in order to maintenance.For the large particle solid that prevents to carry secretly in the fed sheet of a media causes that pump blocks or damage, filtrating equipment 23 also is housed at the suction port end.

The utility model device power motor is installed in topmost, and work is partly---impeller is in lowermost end, therefore ensure perpendicularity that key that pump drive has maximal efficiency and stability is to guarantee that pump shaft is installed and with the coaxality of motor rotation axis.This device adopts coupling 2 that pump shaft 9 is connected with machine shaft, by the bearing 20 of pump seat 9, mounting plate 13, pump line lower end, pump shaft is positioned then.Wherein pump seat 9 endoporus are equipped with bearing 6, are fixed on the pump seat by bearing cap 3, by round nut 4 and floor clip 5 the pump shaft upper end are vertically fixed on the pump seat on the bearing 6, there is Sealing the pump seat lower end, interior packing seal 7, oil sealing 8, mounting plate 13 positions pump shaft once more; At last by 20 pairs of pump shafts of bearing of pump line lower end near the last location of lower end allow again it be installed in the enclosed space that forms by pump case, pump cover in impeller by key locate afterwards with the impeller screw in addition fastening realization be connected.Because the utility model utilizes cooperatively interacting between three parts, perpendicularity and coaxality that pump shaft is installed have been guaranteed effectively, high vibration and noise when having avoided pump to start.

Compare with existing Under Water Pumps, the utility model device has modern design, advantage rational in infrastructure.By Sealings such as seal ring, round section joint ring, oil sealing are set whole device is separated into upper and lower two isolated mutually parts on mounting plate, has prevented that effectively the etchant gas of corrosive liquid or effusion from oozing out the erosion that causes the top parts; By adopting corrosion-resistant engineering plastics to make or clad the parts that are positioned at below the mounting plate, improved the corrosion resistance of complete machine.As long as mounting plate is shelved on acid solution or the corrosion liquid bath, pump case etc. directly is immersed in the liquid during actual the use, must pour into and directly to use, save many troubles.Simultaneously the utility model is by pump seat, mounting plate, and pump line bottom bearing fixing pump shaft has guaranteed perpendicularity and coaxality that pump shaft is installed, the jitter phenomenon when the transmission efficiency ， And that has improved pump has avoided pump to start.The utility model is drawn materials easily, and easy to make, Corrosion Protection is superior, border test factually, the utility model directly places acid solution 1-2 and is not corroded, if the Under Water Pumps that adopts common iron to make, only just corroded in 1-2 days, corrosion protection efficient has improved tens times.The utility model can be made the series product with plurality of specifications according to the requirement of different flow and lift, to satisfy the different requirements of various manufacturing equipments.Can be widely used in industries such as plating, chemical industry, the wastes treatment, weaving.

An embodiment is provided below.

2.2 kilowatts of power motors of Adopt, φ 50mm pump shaft, φ 80mm pump line, pump inlet pipe φ 40mm, matching partss such as outer pipe φ 32mm and corresponding seal ring, round section joint ring, by the plastics Under Water Pumps that preceding method is made, lift 16M, flow 10M³/ hour, be placed on and work 1-2 on the acid tank and be not corroded, and only thousand yuan of costs, be low than general Under Water Pumps.

Claims

1, a kind of corrosion-resistant plastic Under Water Pumps, by motor, electric machine support, coupling, bearing cap, round nut, floor clip, seal ring, oil sealing, pump seat, round section joint ring, nut, bearing, mounting plate, pump shaft, pump line, pump case, impeller, pump cover, outer pipe, the inlet tube of band filter is formed from top to bottom, it is characterized in that it on the mounting plate that connects pump seat and pump line pump shaft by the Sealing that is made of seal ring and oil sealing being housed above locating and by above locating round section joint ring being set at outer pipe, whole device is separated into, following two isolated mutually parts, be positioned at the pump shaft of mounting plate downside, pump line, pump case, the surface of pump cover has all cladded corrosion resistant engineering plastics, and pump case is equipped with the bar shaped stiffening rib around the outside.

2, corrosion-resistant plastic Under Water Pumps as claimed in claim 1, the pump shaft that it is characterized in that it is to be connected with machine shaft by coupling, it be behind the bearing location by pump seat, mounting plate, pump line lower end again be installed in the seal space that pump case, pump cover form in impeller realize being connected with the in addition fastening mode of impeller screw by back, key location.

3, corrosion-resistant plastic Under Water Pumps as claimed in claim 1 is characterized in that its pump shaft, pump line, pump case, also can be directly makes with corrosion-resistant plastic, and its pump line and pump case are tightly connected by the hot blast welding.

4, corrosion-resistant plastic Under Water Pumps as claimed in claim 1 is characterized in that the inlet tube of its band filter, outer pipe are connected by internal and external threads and pump case realization.