CN210684317U

CN210684317U - Turbine vacuum system of paper machine

Info

Publication number: CN210684317U
Application number: CN201921243725.8U
Authority: CN
Inventors: 李庆瑞
Original assignee: Xinxiang Tengfei Paper Industry Co ltd
Current assignee: Xinxiang Tengfei Paper Industry Co ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-06-05
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses a papermaking technical field's a paper machine turbine vacuum system, this system include gas conveying line, and gas conveying line's one end is equipped with vacuum suction point, the other end is equipped with the turbine vacuum machine, is equipped with filter, heat exchanger and condenser on gas conveying line in proper order, and the delivery port of condenser and heat exchanger's water inlet intercommunication, heat exchanger's delivery port and the water inlet intercommunication of heater, and the delivery port of heater passes through steam line and drying chamber intercommunication. The utility model discloses be equipped with heat exchanger and condenser on the gas transmission pipeline between vacuum suction point and turbine vacuum pump, take out the steam condensation in the gas and send back heat exchanger through the condenser and carry out the heat exchange with turbine vacuum pump, not only improved the utilization ratio of gaseous normal water, still reduced turbine vacuum pump exhaust gas's temperature, it is extravagant to have reduced the energy, hot water after the heat exchange simultaneously heats into hot steam through the heater, can be used to the drying of paper.

Description

Turbine vacuum system of paper machine

Technical Field

The utility model relates to a papermaking technical field, concretely relates to paper machine turbine vacuum system.

Background

In traditional papermaking process, need utilize to press the felt and press down the felt and press from both sides tight paper pulp, then utilize a plurality of compression rollers with paper pulp press forming, because contain a large amount of water in the paper pulp forming process, consequently, water in the paper pulp will permeate to press the felt and press down in the felt, need utilize the turbine fan will press the felt and press down the water in the felt and suck the dry this moment. The paper drying is mainly finished by hot air, when the paper is dried, the impact air flow formed by heating high-temperature hot air by a fan is directly sprayed to the surface of the wet paper web, and the hot air is high in heat and low in humidity and has higher flow velocity, so that the water in the paper web can be effectively absorbed by destroying the water vapor boundary layer on the surface of the paper web, and the drying can be realized while the energy consumption can be greatly reduced; and the paper web dried by hot air has good flexibility, when the wet paper web is supported by a papermaking fabric and enters a drying device for drying operation, the pulp fiber in the wet paper web is almost not inhibited by external force to generate internal stress in the whole process, so that the pulp fiber in the paper web is always kept in the original loose state, and the dried paper web has good flexibility.

In the traditional paper pulp forming process, a turbine fan is often adopted as a power source, water and air in the upper felt and the lower felt are sucked into the turbine fan together by the turbine fan, and then the water and the air are discharged to the atmosphere along an air outlet of the turbine fan, so that a large amount of water resources cannot be effectively utilized; meanwhile, a steam hood ventilation system for drying paper webs in the paper machine is completely heated by steam, so that the problems of large steam consumption, large energy consumption and high production cost exist, and the sustainable development of the society is not facilitated.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a turbine vacuum system for a paper machine.

The utility model discloses the technical scheme who adopts does:

the design is a paper machine turbine vacuum system, including gas conveying line, set up in the vacuum suction point of gas conveying line one end and set up in the turbine vacuum machine of the gas conveying line other end gas conveying line is last to be equipped with filter, heat exchanger and condenser in proper order, just the delivery port of condenser passes through return line and heat exchanger's water inlet intercommunication, heat exchanger's delivery port passes through the water inlet intercommunication of pipeline and heater, the delivery port of heater passes through steam conduit and drying chamber intercommunication.

Preferably, the filter comprises a housing and a filter screen arranged in the housing along the horizontal direction, wherein the upper space of the filter screen is communicated with the heat exchanger and the lower space of the filter screen is communicated with the vacuum suction point in the filter.

Preferably, the condenser inner cavity is provided with a horizontal separation plate so that the condenser inner cavity is divided into a condensation chamber and a water storage chamber, and the horizontal separation plate is provided with an overflowing hole for communicating the condensation chamber with the water storage chamber.

Preferably, the side wall of the condenser is provided with an air inlet and an air outlet which are oppositely arranged and communicated with the condensing chamber, a plurality of upper baffle plates and lower baffle plates are alternately arranged in the inner cavity of the condensing chamber, and an S-shaped condensing channel is formed between the upper baffle plates and the lower baffle plates.

Compared with the prior art, the utility model has the advantages that:

the utility model discloses be equipped with heat exchanger and condenser on the gas transmission pipeline between vacuum suction point and turbine vacuum pump, take out the steam condensation in the gas and send back heat exchanger through the condenser and carry out the heat exchange with turbine vacuum pump, not only improved the utilization ratio of gaseous normal water, still reduced turbine vacuum pump exhaust gas's temperature, it is extravagant to have reduced the energy, hot water after the heat exchange simultaneously is through giving up hot steam of hot gas heating, can be used to the drying of paper.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a condenser;

the device comprises a gas conveying pipeline 1, a vacuum suction point 2, a turbine vacuum machine 3, a filter 4, a heat exchanger 5, a condenser 6, a return pipeline 7, a heater 8, a steam pipeline 9, a drying chamber 10, a shell 11, a filter screen 12, a horizontal partition plate 13, a condensing chamber 14, a water storage chamber 15, an upper baffle plate 16, a lower baffle plate 17 and a condensing channel 18.

Detailed Description

The following embodiments are only intended to illustrate the present invention in detail, and do not limit the scope of the present invention in any way. The unit module components, structures, mechanisms, sensors and other devices referred to in the following examples are all conventional and commercially available products unless otherwise specified.

Example (b): as shown in fig. 1 and 2, a turbine vacuum system of a paper machine comprises a gas conveying pipeline 1, wherein one end (left end) of the gas conveying pipeline 1 is provided with 3-5 vacuum suction points 2, the other end (right end) of the gas conveying pipeline 1 is communicated with a turbine vacuum machine 3, the gas conveying pipeline 1 is further sequentially provided with a filter 4, a heat exchanger 5 and a condenser 6, a water outlet of the condenser 6 is communicated with a water inlet of the heat exchanger 5 through a return pipeline 7, a water outlet of the heat exchanger 5 is communicated with a water inlet of a heater 8 through a pipeline, and a water outlet of the heater 8 is communicated with a drying chamber 10 through a steam pipeline 9.

In the present embodiment, the filter 4 includes a housing 11 and a filter 12 provided in the housing 11 in a horizontal direction, and in the filter 4, an upper space of the filter 12 communicates with the heat exchanger 5 and a lower space of the filter communicates with the vacuum suction point 2.

In this embodiment, the inner cavity of the condenser 6 is provided with a horizontal partition plate 13, so that the inner cavity of the condenser 13 is divided into a condensation chamber 14 and a water storage chamber 15, and the horizontal partition plate 13 is provided with an overflowing hole for communicating the condensation chamber 14 with the water storage chamber 15; the side wall of the condenser 6 is provided with an air inlet and an air outlet which are oppositely arranged and communicated with the condensing chamber 14, the air inlet on the side wall of the condenser 6 is communicated with the air outlet of the heat exchanger 5, and the air outlet on the side wall of the condenser 6 is communicated with the air inlet of the turbine vacuum pump 3; a plurality of upper baffles 16 and lower baffles 17 are alternately arranged in the inner cavity of the condensation chamber 14, and an S-shaped condensation channel 18 is formed between the upper baffles 16 and the lower baffles 17.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a paper machine turbine vacuum system, includes gas conveying line, sets up in the vacuum suction point of gas conveying line one end and sets up in the turbine vacuum machine of the gas conveying line other end which characterized in that: be equipped with filter, heat exchanger and condenser on the gas transmission pipeline in proper order, just the delivery port of condenser passes through return line and heat exchanger's water inlet intercommunication, heat exchanger's delivery port passes through the water inlet intercommunication of pipeline and heater, the delivery port of heater passes through steam conduit and drying chamber intercommunication.

2. A turbine vacuum system for a paper machine according to claim 1, characterized in that: the filter comprises a shell and a filter screen arranged in the shell along the horizontal direction, wherein the upper space of the filter screen in the filter is communicated with the heat exchanger, and the lower space of the filter screen is communicated with a vacuum suction point.

3. A turbine vacuum system for a paper machine according to claim 1, characterized in that: the condenser inner chamber is equipped with horizontal separation board to make the condenser inner chamber divide into condensation chamber and reservoir chamber, just be equipped with the discharge orifice that makes condensation chamber and reservoir chamber intercommunication on the horizontal separation board.

4. A turbine vacuum system for a paper machine according to claim 3, characterized in that: the side wall of the condenser is provided with an air inlet and an air outlet which are oppositely arranged and communicated with the condensing chamber, a plurality of upper baffle plates and lower baffle plates are alternately arranged in the inner cavity of the condensing chamber, and an S-shaped condensing channel is formed between the upper baffle plates and the lower baffle plates.