CN210764676U

CN210764676U - Wooden plug screw extrusion water recovery circulation system

Info

Publication number: CN210764676U
Application number: CN201921666457.0U
Authority: CN
Inventors: 赵坤
Original assignee: Yekalon Jiufangyuan Hubei Floor Panels Co ltd
Current assignee: Yekalon Jiufangyuan Hubei Floor Panels Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-06-16
Anticipated expiration: 2029-09-30

Abstract

The utility model provides a cork screw extrusion water recycling circulation system, which at least comprises a wood chip washing machine, a dewatering screw machine, a pre-cooking cylinder and a cork screw machine, wherein the wood chip washing machine, the dewatering screw machine, the pre-cooking cylinder, the cork screw machine, a primary filtering system, a water pump A, a secondary filtering system, a water collecting system and a water pump B are sequentially connected end to form a circulation system; the primary filtering system at least comprises a filtering water tank, a filtering and deslagging net is arranged at the upper part of the filtering water tank and used for filtering wood slag, a spiral pushing device is arranged above the filtering and deslagging net and used for guiding out the wood slag, and a slag outlet is formed in the position, corresponding to the spiral pushing device, on the side wall in the filtering water tank; use the utility model discloses a wooden plug screw extrusion water recovery circulation system can make sewage discharge significantly reduce, and environmental protection pressure reduces greatly, and sewage cyclic utilization back, for production system has carried out the replenishment, and manufacturing cost is showing and is descending.

Description

Wooden plug screw extrusion water recovery circulation system

Technical Field

The utility model relates to a wooden plug screw extrusion water recovery circulation system belongs to wood-based plate production, environmental protection and energy saving technical field.

Background

The artificial board is produced with timber as material and the timber is peeled before being cut in a chipping machine. Conveying the processed wood chips to a screening machine through a belt conveyer, conveying the screened qualified wood chips to a wood chip washing machine through a belt conveyor, cleaning, conveying the cleaned wood chips to a dehydration screw machine through a wood chip pump, then preheating the wood chips in a pre-cooking cylinder, conveying the preheated clean wood chips to the cooking cylinder for cooking and softening after extrusion and dehydration in a wood plug screw machine, conveying the softened wood chips to a grinding chamber body of a defibration hot-grinding machine through a discharge screw, a continuous screw and a strip screw, uniformly mixing the wood chips with paraffin and glue sprayed simultaneously in a jet pipe of the hot-grinding machine, conveying the wood chips to a drying pipe, paving and prepressing the dried fibers to form a slab, and pressing the slab into a fiberboard through a press.

Because wood chips need to be preheated and cleaned in the production process of the artificial boards, the wood chips contain a large amount of moisture in the cleaning process, a large amount of wastewater can be generated in the extrusion dehydration process of the wood plug screw machine, and the filter screens and the water falling ports of the upper and lower screw bodies need to be washed by clean water in the operation process of the wood plug screw machine, so that the amount of wastewater discharged by the whole production system is quite large. After the production process of the traditional production system is finished, the wastewater is collected to a sewage treatment system for treatment and then is discharged. Because the production system of the artificial board can generate a large amount of wastewater every day, on one hand, the sewage treatment task is heavy due to the treatment mode, and if the sewage treatment system can not meet the requirements, the environmental protection problem can be directly caused. On the other hand, the production system needs a large amount of water for supplement, the water consumption for production is huge, and the production cost is higher. Although there is a system for recycling waste water in the prior art, the waste water needs to be precipitated for many times, the precipitation process needs a lot of time on one hand to affect the replenishment of production water, and on the other hand, the precipitation tank also needs to occupy a large area, and the requirement on the size of the area is high.

Disclosure of Invention

In order to solve the not enough of existence among the prior art, the utility model provides a wooden plug screw extrusion water recovery circulation system uses the utility model discloses a wooden plug screw extrusion water recovery circulation system can make sewage discharge significantly reduce, and environmental protection pressure reduces greatly, and sewage cyclic utilization back, for production system has carried out the replenishment, and manufacturing cost is showing and descends, and the place requirement is not high.

In order to achieve the above object, the utility model adopts the following technical scheme:

a recovery and circulation system for cork screw extrusion water at least comprises a wood chip rinsing machine, a dewatering screw machine, a pre-cooking cylinder and a cork screw machine, wherein the wood chip rinsing machine, the dewatering screw machine, the pre-cooking cylinder, the cork screw machine, a primary filtering system, a water pump A, a secondary filtering system, a water collecting system and a water pump B are sequentially connected end to form a circulation system;

the primary filtering system at least comprises a filtering water tank, a filtering and deslagging net is arranged at the upper part of the filtering water tank and used for filtering wood slag, a spiral pushing device is arranged above the filtering and deslagging net and used for guiding out the wood slag, and a slag outlet is formed in the position, corresponding to the spiral pushing device, on the side wall in the filtering water tank;

the secondary filtering system is a cyclone filter which is used for filtering silt;

the water collection system is a water storage tank.

The further improvement of the technical scheme is as follows: a slag discharge pipe is arranged below the slag outlet and fixedly connected to the outer wall of the filter water tank, and a slag hopper is arranged below the slag discharge pipe.

And the water pump A and the water pump B are both double water pumps.

The water inlet of the cyclone filter is arranged at the lower part, the water outlet of the cyclone filter is arranged at the upper part, the water inlet of the water storage tank is arranged at the upper part, and the water outlet of the water storage tank is arranged at the lower part.

The filtering water tank is a stainless steel water tank.

The filter slag removing net and the bottom of the filter water tank are arranged at a certain angle, the spiral pushing device is arranged above the lower end of the filter slag removing net, and the water inlet of the filter water tank is positioned above the higher end of the filter slag removing net.

By the technical scheme provided by the utility model, the utility model discloses a wooden plug screw extrusion water recovery circulation system has increased one set of waste water recovery circulation system on original production system's basis, once filter through the water filter tank by wooden plug screw machine exhaust waste water, the filter deslagging net of filter tank water inlet department filters the impurity such as wooden sediment relatively lighter, carry out secondary filter through cyclone filter again, filter the impurity such as silt heavier, waste water after the filtration can satisfy the cleanliness factor requirement that the wood chip washs water, waste water gets into the wood chip rinsing machine and circulates. The filter deslagging net of the filter water tank is obliquely arranged, so that wood slag can be accumulated at the lower end, and waste water can flow into the water tank through the higher end, so that the filter deslagging net is prevented from being blocked by the wood slag to cause water stagnation. The setting up of two water pumps makes the volume of drawing water improve by a wide margin, has satisfied the demand of a large amount of wastewater discharge extractions, has improved work efficiency. Through using the utility model discloses a wooden plug screw extrusion water recovery circulation system back, almost no longer have sewage discharge, manufacturing cost has also been practiced thrift to a certain extent to sewage treatment's reduction, and has reduced the environmental protection pressure in the production process. A large amount of wastewater can be timely supplemented into a production system after being treated, so that the production water consumption is greatly reduced, and the production water cost is greatly reduced. The water pump A connected with the filtering water tank and the secondary filtering tank is a double-water pump, the performance of the double-water pump is greatly improved compared with that of a single-water pump, the working efficiency is improved, and the speed of wastewater treatment is accelerated.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic side view of the filtering water tank of the present invention.

In the figure: 1. the system comprises a wood chip washing machine, 2 a dewatering screw machine, 3 a pre-cooking cylinder, 4 a cork screw machine, 5 a filtering water tank, 6 a water pump A, 7 a cyclone filter, 8 a water storage tank, 9 a water pump B, 10 a filtering water tank water inlet, 501 a screw pushing device, 502 a slag discharge pipe, 503 a slag hopper, 504 a filtering slag removal net.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1 and fig. 2, the cork screw extrusion water recycling circulation system of the embodiment includes a wood chip washing machine 1, a dewatering screw machine 2, a pre-cooking cylinder 3 and a cork screw machine 4, wherein a feed inlet of the cork screw machine 4 is connected with a discharge outlet of the wood chip washing machine 1 through a pipeline; the water discharge pipe of the cork screw machine 4 is connected with the water inlet of the filtering water tank 5 through a pipeline; the filtering water tank 5 is made of stainless steel, a filtering and deslagging net is arranged at a water inlet of the filtering water tank 5, the filtering and deslagging net is a stainless steel net, the filtering and deslagging net 504 and the bottom of the filtering water tank 5 are obliquely arranged at a certain angle, the lower end of the filtering and deslagging net is horizontally arranged, the width of the horizontal plane is about 20cm, the spiral pushing device 501 is arranged above the lower end of the filtering and deslagging net 504, the water inlet 10 of the filtering water tank is positioned above the higher end of the filtering and deslagging net 504, and a slag outlet is formed in the inner side wall of the filtering water tank 5 and corresponds to the spiral pushing device 501; a slag discharge pipe 502 is arranged below the slag outlet, and a slag hopper 503 is arranged below the slag discharge pipe 502.

The water outlet of the filtering water tank 5 is connected with the water inlet of a double water pump A6 through a pipeline; the water outlet of the water pump A6 is connected with the water inlet of the cyclone filter 7 through a pipeline; the water outlet of the cyclone filter 7 is connected with the water inlet of the water storage tank 8 through a pipeline; the water outlet of the cyclone filter 7 and the water inlet of the water storage tank 8 are both arranged at the upper part, and by the principle of a communicating vessel, after the wastewater is filtered by the cyclone filter 7, dregs such as silt and the like are deposited at the bottom of the cyclone filter 7 and are discharged by a slag discharge system at the bottom, and the water filtered at the upper part enters the water storage tank 8; the water outlet of the water storage tank 8 is connected with the water inlet of a water pump B9 through a pipeline; the water outlet of the water pump B79 is connected with the water inlet of the wood chip washing machine 1 through a pipeline.

The embodiment of the utility model provides a working procedure as follows:

s1, washing the wood chips by a wood chip washing machine 1, then dehydrating the wood chips by a dehydration screw machine 2, then preheating the wood chips by a precooking cylinder 3, and extruding and dehydrating the preheated wood chips by a cork screw machine 4;

s2, dehydrating the wood chips by using a cork screw machine 4 and then entering a cooking system of the next procedure; the waste water in the production system is discharged through a drain pipe of the cork screw machine 4, the wood slag in the waste water is filtered out through a filter slag removing net of the filter water tank 5, the wood slag is guided out by starting the screw pushing device 501 after reaching a certain amount, and the wood slag is discharged into a slag hopper 503 through a slag discharging pipe 502; the wastewater enters the filtering water tank 5 after being filtered once through the filtering slag removing net and is discharged through a water outlet of the filtering water tank 5;

s3, pumping the wastewater into a cyclone filter by a double-water pump A6, filtering impurities such as silt in the wastewater by the cyclone filter for the second time, and discharging the filtered wastewater into a water storage tank 6 through a water outlet at the upper part of the cyclone filter 5;

and S4, discharging the wastewater through a water outlet of the water storage tank 6, and pumping the wastewater into the wood chip washing machine 1 through a water pump B7 to complete a cycle, thereby realizing the reuse of the wastewater.

The utility model discloses a wooden plug screw extrusion water recovery circulation system can make the sewage that production system produced obtain the recovery and recycle, has both reduced the cost of sewage treatment, has solved the environmental protection problem, has practiced thrift the cost of process water again, makes the required supplementary water yield of production system reduce greatly. The recovered waste water is generated after pre-cooking, so that the temperature of the waste water is still as high as about 70 ℃ in the recovery process, and when the waste water enters the water washing system again, certain heat can be provided, and the time and the heating cost required by preheating in the subsequent process are reduced. According to statistics, when a recycling circulation system is not added in an original production system, the amount of sewage discharged per hour is 10 t-15 t, the sewage discharge amount is large, the environmental protection pressure is very large, the water consumption after the recycling circulation system is added is about 1/3, almost no wastewater is discharged, and only a small amount of wastes such as dregs are generated.

The utility model discloses only increased some simple equipment and pipelines just solved sewage treatment and recycle's big problem to former production system, equipment is fairly simple, and the maintenance cost is low, convenient to use, low in manufacturing cost is honest and clean, and cost reduction and efficiency improvement effect is showing very much.

Claims

1. The utility model provides a wooden plug screw extrusion water recovery circulation system, includes wood chip rinsing machine, dehydration screw machine, precooking jar and wooden plug screw machine at least, its characterized in that: the wood chip washing machine, the dewatering screw machine, the pre-cooking cylinder, the wood plug screw machine, the primary filtering system, the water pump A, the secondary filtering system, the water collecting system and the water pump B are sequentially connected end to form a circulating system;

the water collection system is a water storage tank.

2. The corkscrew extrusion water recovery cycle system according to claim 1, wherein: a slag discharge pipe is arranged below the slag outlet and fixedly connected to the outer wall of the filter water tank, and a slag hopper is arranged below the slag discharge pipe.

3. The corkscrew extrusion water recovery cycle system according to claim 1, wherein: and the water pump A and the water pump B are both double water pumps.

4. The corkscrew extrusion water recovery cycle system according to claim 1, wherein: the water inlet of the cyclone filter is arranged at the lower part, the water outlet of the cyclone filter is arranged at the upper part, the water inlet of the water storage tank is arranged at the upper part, and the water outlet of the water storage tank is arranged at the lower part.

5. The corkscrew extrusion water recovery cycle system according to claim 1, wherein: the filtering water tank is a stainless steel water tank.

6. The corkscrew extrusion water recovery cycle system according to claim 1, wherein: the filter slag removing net and the bottom of the filter water tank are arranged at a certain angle, the spiral pushing device is arranged above the lower end of the filter slag removing net, and the water inlet of the filter water tank is positioned above the higher end of the filter slag removing net.