CN202074746U

CN202074746U - Waste water heat energy recovery system

Info

Publication number: CN202074746U
Application number: CN2011201869872U
Authority: CN
Inventors: 田立法
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-03
Filing date: 2011-06-03
Publication date: 2011-12-14
Anticipated expiration: 2021-06-03

Abstract

The utility model provides a waste water heat energy recovery system and relates to a heat energy recovery system of industrial discharged hot waste water. The waste water heat energy recovery system comprises a water inlet pipe (17), a first-stage filtering system (I) and a heat exchanger (30). An outlet of the first-stage filtering system (I) is connected to an inlet of the heat exchanger (30) through a connecting pipeline, an outlet of the heat exchanger (30) is connected to a sewage discharge pipe (21), and a water pump (3) is arranged on the connecting pipeline. The first-stage filtering system (I) comprises a first filter (1) and a second filter (2) which are connected in parallel. The first filter and the second filter are respectively connected to inlets of the water inlet pipe (17) and the heat exchanger (30) through respective connecting pipelines which are provided with a control valve respectively. A second-stage filtering system (II) is arranged on a connecting pipeline between the first-stage filtering system (I) and the heat exchanger (30). The waste water heat energy recovery system has good filtering effect, the heat exchanger can not be blocked, pump-shutdown treatment is not required during sewage discharging process, and work efficiency of the system is high.

Description

Waste water heat energy recovery system

Technical field

The utility model relates to a kind of heat reclaiming system, particularly a kind of heat reclaiming system of industrial discharge thermal wastewater.

Background technology

Fig. 1 is a prior art industrial wastewater heat reclaiming system structural representation.As shown in Figure 1, the recovery plant for waste water heat energy of dyeing application at present generally is made up of heat exchanger 107, filter 101, can recycle the heat energy in the waste water.During work, thermal wastewater provides power by pump 103, filters the back through filter 101 and enters heat exchanger 107 by pipeline 104, discharges from pipeline 108 after the heat exchange; The cold clear water of need heating is introduced from pipeline 110, and the heating back is from pipeline 109 dischargings.Find in the use, because the thermal wastewater of discharging from pipeline 102 enters and filters before the heat exchanger 107 not thoroughly, is easy to make fiber filoplume and other solid impurities among the spent hot water to enter into heat exchanger 107, causes heat exchanger 107 to stop up, reduce heat exchange efficiency, even heat transmission equipment can't be moved.Have, when discharging the impurity dirt after filtering, if system's termination of pumping is handled, the utilization rate of equipment is reduced, clean if blowdown is carried out in not termination of pumping of system, then dirt and a large amount of thermal wastewaters are together discharged, and cause the waste of heat energy.

The utility model content

The utility model provides a kind of waste water heat energy recovery system at the deficiencies in the prior art, and filter effect is better, does not stop up heat exchanger, or can not termination of pumping washes the waste water heat-energy recovering apparatus of discharge impurities dirt automatically.

Problem to be solved in the utility model is achieved by the following technical solution:

A kind of waste water heat energy recovery system, comprise water inlet pipe, one-level filtration system and heat exchanger, the outlet of one-level filtration system links to each other by connecting pipe with the inlet of heat exchanger, the outlet of heat exchanger links to each other with blow-off pipe, connecting pipe is provided with water pump, wherein, the one-level filtration system comprises first filter and second filter that is arranged in parallel, the connecting pipe that both pass through separately respectively links to each other with the inlet of water inlet pipe and heat exchanger, be respectively equipped with control valve on this connecting pipe, the connecting pipe between one-level filtration system and the heat exchanger is provided with the cascade filtration system.

For the dirt in more effective filtered wastewater, set up the cascade filtration system, comprise first filter vat and second filter vat that are arranged in parallel, the connecting pipe that both pass through separately respectively links to each other with heat exchanger entrance with the one-level filtration system, two groups of connecting pipes that formation is arranged in parallel, every group of connecting pipe is provided with a plurality of control valves.

First filter vat is identical with second filter vat, the quartz sand filter media of built-in equivalent.

Control valve on two groups of connecting pipes that are arranged in parallel, open and-shut mode is opposite each other.

Water pump is arranged on the connecting pipe between one-level filtration system and the cascade filtration system.

The waste water heat energy recovery system that the utility model provides can carry out twice to the dirt impurity that contains in the industrial thermal wastewater and effectively filter; Handle system works efficient height during blowdown without termination of pumping; Make full use of the thermal wastewater that industrial discharge falls, make it to carry out sufficient heat exchange, farthest extract the heat energy in the waste water, reach the effect that energy secondary utilizes with the clear water that replenishes.

Below in conjunction with the drawings and specific embodiments the utility model is described in further details.

Description of drawings

Fig. 1 is a prior art industrial wastewater heat reclaiming system structural representation;

Fig. 2 is the utility model industrial wastewater heat reclaiming system structural representation;

Fig. 3 is the utility model filter vat structural representation.

The specific embodiment

Please referring to Fig. 2, the utility model comprises one-level filtration system I and the II of cascade filtration system.One-level filtration system I comprises first filter 1 and second filter 2, two filters upper end connects control valve 31,6 respectively, control valve 31,6 connects water inlet pipe 17, the lower end connects first control valve 7 and second control valve 8 respectively, first control valve 7 is connected with first pipeline 18 with second control valve 8, on first pipeline 18 water pump 3 is housed, and is connected with the II of cascade filtration system.The II of cascade filtration system comprises that first filter vat 4 and second filter vat, 5, the first filter vats, 4 upper ends connect the 3rd control valve 9, the 4th control valve 10 by second pipeline 19; Second filter vat, 5 upper ends connect the 5th control valve 11, the 6th control valve 12 by the 3rd pipeline 20; The 3rd control valve 9, the 6th control valve 12 are communicated with first pipeline 18, and the 4th control valve 10, the 5th control valve 11 link to each other with blow-off pipe 21; First filter vat, 4 lower ends by the 5th pipeline 23 be connected to the 7th control valve 13, the 8th control valve 14, the second filter vats 5 lower ends are connected to the 9th control valve 15, the tenth control valve 16 by the 4th pipeline 22; The 7th control valve 13, the tenth control valve 16 are communicated with thermal wastewater import 25 on the heat exchanger 30 by the 6th pipeline 24; The 8th control valve 14, the 9th control valve 15 are communicated with wastewater outlet 27 on the heat exchanger 30 by the 7th pipeline 26; Also being provided with on the heat exchanger 30 needs advancing cold water pipes 28, going out warm water pipeline 29 of heating clear water.

First filter 1 and second filter 2 among the one-level filtration system I are filters of built-in filter screen, need manually pull down when carrying out blowdown, could its inner dirt removal is clean.

Fig. 3 is the utility model filter vat structural representation, as shown in Figure 3, groundwork part among the II of cascade filtration system is first filter vat 4 and second filter vat 5, first filter vat 4 is identical with the structure of second filter vat 5, this filter vat comprises housing 32, the built-in stainless steel orifice plate 33 in housing 32 belows, orifice plate 33 peripheries and housing 32 firm welding, place quartz sand filter media 34 on the orifice plate 33, quartz sand filter media 34 order numbers are greater than the order number in hole on the orifice plate 33, and quartz sand filter media 34 can not spill from the hole on the orifice plate 33.The top opening parts connect stainless steel liquid barrier 35 with holes with support in the housing 32, in order to the liquid stream impulse force of equilibrium when the spent hot water is advanced in the top.

As shown in Figure 2, the course of work of the present utility model is such: when carrying out first mode of operation,

control valve

6,8,9,11,13,15 close,

control valve

31,7,10,12,14,16 open, thermal wastewater enters first filter 1 through water inlet pipe 17 and carries out the one-level filtration under the swabbing action of water pump 3, spent hot water after one-level is filtered is through first control valve 7, first pipeline 18, the 6th control valve 12 is sent into second filter vat 5 that quartz sand filter media 34 is housed by the 3rd pipeline 20 and is filtered, and the thermal wastewater after the filtration is through the 4th pipeline 22, the tenth control valve 16 is delivered to thermal wastewater import 25 by the 6th pipeline 24 and is entered heat exchanger 30 and carry out heat exchange.Enter the 7th pipeline 26 through the waste water after the heat exchange by the wastewater outlet on the heat exchanger 30 27 and enter first filter vat 4, filter after second pipeline 19, the 4th control valve 10 are discharged by blow-off pipe 21 through the 8th control valve 14, the 5th pipeline 23.Need the clear water of heating to enter heat exchanger 24,, realize energy recovery by going out the hot clear water discharge that warm water pipeline 29 will heat up through advancing cold water pipes 28.The direction of arrow is the waste water flow direction among the figure.

When carrying out second mode of operation, referring again to Fig. 2,

control valve

6,8,9,11,13,15 is opened,

control valve

31,7,10,12,14,16 is closed, thermal wastewater enters second filter 2 through water inlet pipe 17 and carries out the one-level filtration, at this moment, the staff can remove the work of dirt impurity to first filter 1; Spent hot water after one-level is filtered is through second control valve 8, first pipeline 18, the 3rd control valve 9, sending into first filter vat 4 that quartz sand filter media is housed by second pipeline 19 filters, thermal wastewater after the filtration is through the 5th pipeline 23, the 7th control valve 13 is delivered to thermal wastewater import 25 by the 6th pipeline 24 and is entered heat exchanger 30 and carry out heat exchange, enter the 7th pipeline 26 through the 9th control valve 15 through the waste water after the heat exchange by the wastewater outlet on the heat exchanger 30 27, the 4th pipeline 22 enters second filter vat 5, and quartz sand filter media is filtered the dirt impurity accumulate through the 3rd pipeline 20, the 5th control valve 11 is discharged by blow-off pipe 21.The waste water flow direction is opposite with the direction of arrow among the figure in this process cascade filtration system.

When carrying out next first mode of operation, the waste water after heat exchange enters first filter vat 4, and the dirt impurity that filter in the blowdown process is accumulated is discharged by blow-off pipe 21 through second pipeline 19, the 4th control valve 10.

The waste water heat energy recovery system that the utility model provides is realized the twice filtration to thermal wastewater before entering heat exchanger, prevent that effectively heat exchanger from stopping up.First, second mode of operation hockets, and goes round and begins again, and finishes automatic fitration and blowdown.For the one-level filtration system, utilize taking turns to operate of first control valve 7 and second control valve 8, control first filter 1 and second filter 2 takes turns to operate, blowdown in turn, in other words, the one-level filtration system realizes need not the termination of pumping blowdown by controlling first filter 1 and second filter 2 takes turns to operate; The cascade filtration system, utilize the design feature of first filter vat 4 and second filter vat 5 self, the positive reverse direction flow of control waste water, the dirt impurity that accumulates in the filter vat is discharged, thereby realized that the cascade filtration system need not the termination of pumping blowdown, the purpose of increasing work efficiency is farthest extracted the heat energy in the waste water, reaches the effect that energy secondary utilizes.

The first control valve 7-the tenth control valve 16 only illustrates in the present embodiment, as long as can play the switch or the valve of on-off action to pipeline, all can reach the purpose of this utility model, all is encompassed in the spirit of the present utility model explanation hereby.

Claims

1. waste water heat energy recovery system, comprise water inlet pipe (17), one-level filtration system (I) and heat exchanger (30), the outlet of one-level filtration system (I) links to each other by connecting pipe with the inlet of heat exchanger (30), the outlet of heat exchanger (30) links to each other with blow-off pipe (21), connecting pipe is provided with water pump (3), it is characterized in that, described one-level filtration system (I) comprises first filter (1) and second filter (2) that is arranged in parallel, the connecting pipe that both pass through separately respectively links to each other with the inlet of water inlet pipe (17) with heat exchanger (30), be respectively equipped with control valve on this connecting pipe, the connecting pipe between described one-level filtration system (I) and the heat exchanger (30) is provided with cascade filtration system (II).

2. waste water heat energy recovery system as claimed in claim 1, it is characterized in that, described cascade filtration system (II) comprises first filter vat (4) and second filter vat (5) that is arranged in parallel, the connecting pipe that both pass through respectively separately links to each other with described heat exchanger (30) inlet with described one-level filtration system (I), two groups of connecting pipes that formation is arranged in parallel, every group of connecting pipe is provided with a plurality of control valves.

3. waste water heat energy recovery system as claimed in claim 2 is characterized in that, described first filter vat (4) is identical with second filter vat (5), the quartz sand filter media of built-in equivalent (34).

4. waste water heat energy recovery system as claimed in claim 2 is characterized in that, the control valve on described two groups of connecting pipes that are arranged in parallel, and open and-shut mode is opposite each other.

5. waste water heat energy recovery system as claimed in claim 2 is characterized in that, described water pump (3) is arranged on the connecting pipe between described one-level filtration system (I) and the described cascade filtration system (II).