CN2837557Y

CN2837557Y - Dual-screw high viscosity medium conveying pump

Info

Publication number: CN2837557Y
Application number: CN 200520123418
Authority: CN
Inventors: 罗绪良; 冯克信; 罗庆生
Original assignee: TIANJIN LILIN SCREW MACHINERY CO Ltd
Current assignee: TIANJIN LILIN SCREW MACHINERY CO Ltd
Priority date: 2005-11-28
Filing date: 2005-11-28
Publication date: 2006-11-15
Anticipated expiration: 2015-11-28

Abstract

The utility model relates to a dual-screw high viscosity medium conveying pump. A pump body bush is arranged in a pump casing, and a driving screw rod and a driven screw rod are arranged in the pump body bush. Two segments of screw threads are arranged on each screw rod, and the screw threads on the two screw rods are engaged mutually. A liquid inlet is respectively arranged on one face of the pump body and one face of the bush, and a liquid outlet is respectively arranged on the other face of the pump body and the other face of the bush. Both ends of each of the two screw rods are connected to bearings in bearing seats at the both side ends of the pump body, one end of one of the two screw rods is connected with a dynamic shaft head and the other end of the screw rod and the same end of the other screw rod are both provided with synchronous gear wheels which are engaged. The utility model has the advantage of evidently improving operational environment, so the utility model has small vibration and low noise, and the production cost is reduced when the utility model conveys high viscosity materials, compared with a rotary piston pump.

Description

Twin-screw high viscosity medium transfer pump

Technical field

The utility model belongs to the high viscosity medium transfer pump, relates in particular to a kind of twin-screw high viscosity medium transfer pump.

Background technique

At present, the unemployed transfer of highly viscous rubber of synthetic rubber liquid all adopts rotary piston pump, driving shaft is given a pair of intermeshing cam by synchromesh gear with transmission of power, at this moment, cam is done relative rotary motion, make the cellar for storing things of pump chamber produce cyclically-varying, cause medium to forward outlet to from inlet, reach the purpose of conveying, its bearing, gear all adopts interior dress form, leans on the medium of being carried to come lubricating bearings and gear, and full-bodied glue does not generally have lubricity, therefore, bearing, the working life of mechanical seal is very low, and sealing effect is poor, the rotary-piston revolution speed is lower, can't directly drive by motor, must be by speed reducer the slow down rear driving thereby the noise of pump, vibrate bigger.Again because the rotary-piston pump bearing, mechanical seal adopts medium lubricated, therefore, can not be used for directly carrying the glue of viscosity higher, need to dilute at course of conveying with solvent, and then solvent extraction come out, production process and cost of production have been increased, domestic part synthetic rubber plant is when the design production line, once supporting use is the high viscosity medium transfer pump of foreign country excessively, as helical rotor pump and two screw pump, helical rotor pump is because its stator liner material is a rubber, can react with the partial solvent in the synthetic rubber production process and lose efficacy, two screw pump is buried bearing, single mechanical end face seal makes bearing, the mechanical seal life-span is low and be eliminated, and the high viscosity glue is directly carried becomes the unemployed difficult problem that presses for solution of synthetic rubber, the existing unemployed glue transfer pump of domestic synthetic rubber is rotary piston pump, and solvent dilution is carried.

The model utility content

Problem to be solved in the utility model is to overcome the above-mentioned defective of aforementioned existence, and a kind of twin-screw high viscosity medium transfer pump is provided.

The utility model solves its technical problem and takes following technological scheme to realize, a kind of twin-screw high viscosity medium transfer pump that provides according to the utility model, it is characterized in that: pump housing lining is arranged in pump case, in the pump housing lining two screw rods, active screw rod and driven screw rod, two sections screw threads are respectively arranged on each screw rod, two ends screw thread on two screw rods, be meshed in twos, the pump housing and lining simultaneously are liquid entering holes, the pump housing and lining another side are liquid outlets, the two ends of two screw rods are connected on the bearing in the bearing support of pump housing two side ends, a screw rod has the spindle nose that connects power for one section, and the same end of its screw rod the other end and another screw rod respectively has the synchromesh gear that is meshed.

The utility model solves its technical problem and can also take following technological scheme further to realize:

Near on the inboard of bearing the synchromesh gear that is meshed is arranged respectively at each screw rod two ends.

Double mechanical seal one side is a sealed letter, and opposite side is a sealing cover, and the seal ring and the seal ring that are sealed on the axle are arranged in it.

By above technological scheme as can be known, the utility model has following advantage at least under the structural arrangements of excellence: twin-screw high viscosity medium transfer pump, improve working environment significantly, vibrate for a short time, noise is low, and, reduce production costs than using rotary piston pump transfer of highly viscous material.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model sectional drawing.

Fig. 3 is a hermetic unit sectional drawing of the present invention.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment, the embodiment that foundation the utility model is provided, structure, feature and effect thereof describe in detail as after.

See also figure, a kind of twin-screw high viscosity medium transfer pump, pump housing lining 7 is arranged in pump case 9, in the pump housing lining two screw rods, active screw rod 5 and driven screw rod 6, two sections screw threads 10 are respectively arranged on each screw rod, 11,12,13, two ends screw thread on two screw rods, be meshed in twos, the pump housing and lining simultaneously are liquid entering holes 14, and the pump housing and lining another side are that the two ends of 15, two screw rods of liquid outlet are connected on the bearing 1 in the bearing support 2 of pump housing two side ends, a screw rod has the spindle nose 16 that connects power for one section, and the same end of its screw rod the other end and another screw rod respectively has the synchromesh gear 8 that is meshed.

Near adopting general double mechanical seal 3 structures that have on the inboard of bearing, a side of double mechanical seal is a sealed letter 4 at each screw rod two ends, and opposite side is a sealing cover 17, and the seal ring 18 and the seal ring 19 that are sealed on the axle are arranged in it.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of twin-screw high viscosity medium transfer pump, it is characterized in that: pump housing lining is arranged in pump case, in the pump housing lining two screw rods, active screw rod and driven screw rod, two sections screw threads are respectively arranged on each screw rod, two ends screw thread on two screw rods, be meshed in twos, the pump housing and lining simultaneously are liquid entering holes, the pump housing and lining another side are liquid outlets, the two ends of two screw rods are connected on the bearing in the bearing support of pump housing two side ends, and a screw rod has the spindle nose that connects power for one section, and the same end of its screw rod the other end and another nut bar respectively has the synchromesh gear that is meshed.

2, a kind of twin-screw high viscosity medium transfer pump according to claim 1 is characterized in that: near on the inboard of bearing the synchromesh gear that is meshed is arranged respectively at each screw rod two ends.

3, a kind of twin-screw high viscosity medium transfer pump according to claim 2, it is characterized in that: double mechanical seal one side is a sealed letter, and opposite side is a sealing cover, and the seal ring and the seal ring that are sealed on the axle are arranged in it.