CN211328283U - Air blowing and water draining system for filter plate of filter press - Google Patents

Abstract

The utility model provides a blowing and draining system for filter plates of a filter press, wherein a plurality of filter plates are arranged in the filter press side by side, liquid cavities are arranged inside the filter plates, and material cavities are arranged between adjacent filter plates; the liquid chamber of the filter plate is connected with the front ends of a water feeding pipe and a water return pipe respectively, the rear end of the water feeding pipe is connected with a water supply tank through a water pump, the rear end of the water return pipe is also connected with the water supply tank, the water feeding pipe is also connected with the water supply tank through a return branch pipe, and a return valve is arranged on the return branch pipe; an air branch pipe is further connected to the water return pipe, the air branch pipe is connected with a compressed air pipeline, an air valve is arranged on the air branch pipe, and a water return valve is arranged between the rear end of the water return pipe and the water supply tank. The utility model discloses utilize the principle that air water is immiscible and air density is far less than the water density, blow off the water in the liquid cavity of filter plate fast, get back to in the water supply tank through water-feeding pipe and backward flow branch pipe, realize the drainage work to the pressure filter plate.

Description

Air blowing and water draining system for filter plate of filter press

Technical Field

The utility model relates to a pressure filter especially relates to drainage system of pressure filter plate.

Background

The low-temperature vacuum dewatering and drying integrated filter press is solid-liquid separation equipment capable of continuously completing the processes of dewatering, washing, filter pressing, drying and the like of materials. In the working process, water in the water tank needs to be respectively introduced into the chambers of the squeezing filter plate and the heating filter plate to realize mechanical filter pressing and indirect heating, and after all the working procedures are finished, the water in the chambers of the filter plates needs to be completely discharged so as to be convenient for pulling the filter plates open to discharge.

In the prior art, water in a cavity of a filter plate (comprising a heating filter plate and a squeezing filter plate) naturally flows back into a water tank by arranging a return pipe, so that the problems of long time consumption, insufficient drainage and low efficiency exist, and the normal operation of subsequent production is influenced. Therefore, how to design a system capable of quickly and sufficiently draining the water in the chamber of the filter plate is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, the present invention provides a drainage system capable of efficiently draining water in a chamber of a filter plate in a filter press.

In order to solve the technical problem, the air blowing and water discharging system of the filter plates of the filter press of the utility model has the advantages that a plurality of filter plates are arranged in the filter press side by side, the interior of each filter plate is provided with a liquid cavity, and a material cavity is arranged between the adjacent filter plates; the liquid chamber of the filter plate is respectively connected with the front ends of a water feeding pipe and a water return pipe, the rear end of the water feeding pipe is connected with a water supply tank through a water pump, the rear end of the water return pipe is also connected with the water supply tank, the water feeding pipe is also connected with the water supply tank through a return branch pipe, and a return valve is arranged on the return branch pipe; the water return pipe is further connected with an air branch pipe, the air branch pipe is connected with a compressed air pipeline, an air valve is arranged on the air branch pipe, and a water return valve is arranged between the rear end of the water return pipe and the water supply tank.

Preferably, the filter plates comprise a heating filter plate and a squeezing filter plate, the heating filter plate and the squeezing filter plate are alternately arranged, a heating liquid chamber is arranged inside the heating filter plate, and a squeezing liquid chamber is arranged inside the squeezing filter plate; the upper water pipe comprises a heating upper water pipe and a squeezing upper water pipe, the heating liquid chamber is connected with the front end of the heating upper water pipe, and the squeezing liquid chamber is connected with the front end of the squeezing upper water pipe; the rear ends of the heating water supply pipe and the squeezing water supply pipe are respectively connected with a water supply tank through a heating pump and a squeezing pump; the water return pipe comprises a heating water return pipe and a squeezing water return pipe, the heating liquid chamber is connected with the front end of the heating water return pipe, and the squeezing liquid chamber is connected with the front end of the squeezing water return pipe.

Furthermore, the air branch pipes comprise a first air branch pipe and a second air branch pipe, the first air branch pipe is connected with the heating water return pipe, and the second air branch pipe is connected with the squeezing water return pipe; the air valves include a first air valve disposed on the first air manifold and a second air valve disposed on the second air manifold.

Further, the return branch pipes include a first return branch pipe connected between the heating upper water pipe and the water supply tank and a second return branch pipe connected between the pressing upper water pipe and the water supply tank; the backflow valves comprise a first backflow valve arranged on the first backflow branch pipe and a second backflow valve arranged on the second backflow branch pipe.

Furthermore, the front end of the heating water feeding pipe and the heating liquid chamber, the front end of the pressing water feeding pipe and the pressing liquid chamber, the front end of the heating water return pipe and the heating liquid chamber, and the front end of the pressing water return pipe and the pressing liquid chamber are connected through hoses.

As the above, the utility model discloses a drainage system that blows of pressure filter plate has following beneficial effect:

by adopting the air blowing and draining system of the filter plate of the filter press, the return valve is firstly closed, then the return valve is opened, and finally the air valve is opened, so that the compressed air in the compressed air pipeline is introduced into the liquid cavity of the filter plate through the air branch pipe and the return pipe, the water in the liquid cavity of the filter plate is quickly blown out by utilizing the principle that the air and the water are immiscible and the air density is far less than the water density, and the compressed air returns to the water supply tank through the water supply pipe and the return branch pipe, thereby realizing the draining work of the filter plate of the filter press; the whole system greatly improves the drainage speed of the liquid chamber of the filter plate, reduces the drainage time, meanwhile, the drainage is more sufficient, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of an air blowing and draining system of a filter plate of a filter press according to the present invention.

Description of the reference numerals

1 Filter press

110 filter plate

111 heating filter plate

112 press filter plate

2 water supply pipe

201 heating water supply pipe

202 squeezing water supply pipe

3 return pipe

301 heating return pipe

302 squeezing water return pipe

310 water return valve

311 first water return valve

312 second water return valve

4 Water pump

410 heating pump

420 squeezing pump

5 Water supply tank

6 reflux branch pipe

601 first return branch pipe

602 second return manifold

610 return valve

611 first reflux valve

612 second Return valve

7 air branch pipe

701 first air branch pipe

702 second air manifold

710 air valve

711 first air valve

712 second air valve

8 compressed air pipeline

9 hose

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to the attached drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

As shown in fig. 1, in the air-blowing and water-draining system of the filter plate of the filter press according to the present embodiment, a plurality of filter plates 110 are arranged side by side in the filter press 1, a liquid chamber is arranged inside each filter plate 110, and a material chamber is arranged between adjacent filter plates 110; the liquid chamber of the filter plate 110 is connected with the front ends of the upper water pipe 2 and the return water pipe 3 respectively, the rear end of the upper water pipe 2 is connected with the water supply tank 5 through the water pump 4, the rear end of the return water pipe 3 is also connected with the water supply tank 5, the upper water pipe 2 is also connected with the water supply tank 5 through the return branch pipe 6, and the return branch pipe 6 is provided with a return valve 610; an air branch pipe 7 is further connected to the return pipe 3, the air branch pipe 7 is connected to a compressed air pipe 8, an air valve 710 is provided on the air branch pipe 7, and a return valve 310 is provided between the rear end of the return pipe 3 and the water supply tank 5.

The air source of the compressed air line 8 in this embodiment is from an air compression system (not shown) of the filter press 1, and the air compression system is also used for the drying process of the material.

In the present embodiment, the filter sheet 110 includes a heating filter sheet 111 and a pressing filter sheet 112, the heating filter sheet 111 and the pressing filter sheet 112 are alternately arranged, a heating liquid chamber is provided inside the heating filter sheet 111, and a pressing liquid chamber is provided inside the pressing filter sheet 112; the upper water pipe 2 comprises a heating upper water pipe 201 and a squeezing upper water pipe 202, the heating liquid chamber is connected with the front end of the heating upper water pipe 201, and the squeezing liquid chamber is connected with the front end of the squeezing upper water pipe 202; the rear end of the heating upper water pipe 201 is connected with the water supply tank 5 through a heating pump 410, and the rear end of the squeezing upper water pipe 202 is connected with the water supply tank 5 through a squeezing pump 420; the water return pipe 3 comprises a heating water return pipe 301 and a squeezing water return pipe 302, a heating liquid chamber is connected with the front end of the heating water return pipe 301, the squeezing liquid chamber is connected with the front end of the squeezing water return pipe 302, the water return valve 310 comprises a first water return valve 311 arranged on the heating water return pipe 301 and a second water return valve 312 arranged on the squeezing water return pipe 302, the first water return valve 311 is connected between the rear end of the heating water return pipe 301 and the water supply tank 5, and the second water return valve 312 is connected between the rear end of the squeezing water return pipe 302 and the water supply tank 5.

Specifically, the air branch pipe 7 includes a first air branch pipe 701 and a second air branch pipe 702, the first air branch pipe 701 is connected with the heating water return pipe 301, and the second air branch pipe 702 is connected with the pressing water return pipe 302; the air valve 710 includes a first air valve 711 provided on the first air branch pipe 701 and a second air valve 712 provided on the second air branch pipe 702.

Specifically, the return branch pipe 6 includes a first return branch pipe 601 and a second return branch pipe 602, the first return branch pipe 601 being connected between the heating upper water pipe 201 and the water supply tank 5, the second return branch pipe 602 being connected between the pressing upper water pipe 202 and the water supply tank 5; the return valve 610 includes a first return valve 611 provided on the first return branch 601 and a second return valve 612 provided on the second return branch 602.

Specifically, the front end of the heating water supply pipe 201 and the heating liquid chamber, the front end of the pressing water supply pipe 202 and the pressing liquid chamber, the front end of the heating water return pipe 301 and the heating liquid chamber, and the front end of the pressing water return pipe 302 and the pressing liquid chamber are connected through hoses 9.

By adopting the air blowing and water discharging system for the filter plate of the filter press according to the embodiment, before filter pressing is completed and the filter plate is ready to be pulled open for discharging, the first water return valve 311 and the second water return valve 312 are firstly closed, the first return valve 611 and the second return valve 612 are then opened, and the first air valve 711 and the second air valve 712 are finally opened, so that compressed air in the compressed air pipeline 8 is introduced into the heating liquid chamber of the heating filter plate 111 through the first air branch pipe 701 and the heating water return pipe 301, water in the heating liquid chamber of the heating filter plate 111 is quickly blown out by utilizing the principle that air and water are immiscible and the air density is far less than the water density, and the water returns to the water supply tank 5 through the heating water supply pipe 201; the compressed air is introduced into the squeezing liquid chamber of the squeezing filter plate 112 through the second air branch pipe 702 and the squeezing water return pipe 302, and by utilizing the principle that air and water are not compatible and the air density is much less than the water density, the water in the squeezing liquid chamber of the squeezing filter plate 112 is quickly blown out and returns to the water supply tank 5 through the squeezing water supply pipe 202 and the second return branch pipe 602, as shown by arrows in fig. 1, so that the water drainage work of the heating filter plate 111 and the squeezing filter plate 112 of the filter press 1 is realized. After the water is drained, the first air valve 711, the second air valve 712, the first return valve 611, and the second return valve 612 are sequentially closed, and the first return valve 311 and the second return valve 312 are opened to return the system to the initial state.

The utility model greatly improves the drainage speed of the liquid chamber of the filter plate, reduces the drainage time, and meanwhile, the drainage is more sufficient, and the production efficiency is improved; in addition, when the liquid cavity of the filter plate is drained, the compressed air also plays a certain loosening role on the materials on the back of the liquid cavity, and the falling of the materials in the subsequent pulling plate discharging process is facilitated.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (5)

1. An air blowing and water discharging system of a filter plate of a filter press,

a plurality of filter plates (110) are arranged in the filter press (1) side by side, a liquid chamber is arranged in each filter plate (110), and a material chamber is arranged between every two adjacent filter plates (110);

the liquid cavity of the filter plate (110) is respectively connected with the front ends of the water feeding pipe (2) and the water return pipe (3), the rear end of the water feeding pipe (2) is connected with the water supply tank (5) through the water pump (4), the rear end of the water return pipe (3) is also connected with the water supply tank (5), the water feeding pipe (2) is also connected with the water supply tank (5) through the backflow branch pipe (6), and the backflow branch pipe (6) is provided with a backflow valve (610);

the method is characterized in that: the water return pipe (3) is further connected with an air branch pipe (7), the air branch pipe (7) is connected with a compressed air pipeline (8), an air valve (710) is arranged on the air branch pipe (7), and a water return valve (310) is arranged between the rear end of the water return pipe (3) and the water supply tank (5).

2. The aeration drainage system of claim 1, wherein: the filter plate (110) comprises a heating filter plate (111) and a squeezing filter plate (112), the heating filter plate (111) and the squeezing filter plate (112) are alternately arranged, a heating liquid chamber is arranged inside the heating filter plate (111), and a squeezing liquid chamber is arranged inside the squeezing filter plate (112); the upper water pipe (2) comprises a heating upper water pipe (201) and a squeezing upper water pipe (202), the heating liquid chamber is connected with the front end of the heating upper water pipe (201), and the squeezing liquid chamber is connected with the front end of the squeezing upper water pipe (202); the rear ends of the heating water feeding pipe (201) and the squeezing water feeding pipe (202) are respectively connected with a water supply tank (5) through a heating pump (410) and a squeezing pump (420);

the water return pipe (3) comprises a heating water return pipe (301) and a squeezing water return pipe (302), the heating liquid chamber is connected with the front end of the heating water return pipe (301), and the squeezing liquid chamber is connected with the front end of the squeezing water return pipe (302).

3. The insufflation drainage system of claim 2, wherein:

the air branch pipe (7) comprises a first air branch pipe (701) and a second air branch pipe (702), the first air branch pipe (701) is connected with the heating water return pipe (301), and the second air branch pipe (702) is connected with the pressing water return pipe (302);

the air valve (710) includes a first air valve (711) provided on the first air branch pipe (701) and a second air valve (712) provided on the second air branch pipe (702).

4. The insufflation drainage system of claim 2, wherein: the return branch pipe (6) comprises a first return branch pipe (601) and a second return branch pipe (602), the first return branch pipe (601) is connected between the heating upper water pipe (201) and the water supply tank (5), and the second return branch pipe (602) is connected between the pressing upper water pipe (202) and the water supply tank (5);

the return valve (610) includes a first return valve (611) provided on the first return branch pipe (601) and a second return valve (612) provided on the second return branch pipe (602).

5. The insufflation drainage system of claim 2, wherein: the front end of the heating water feeding pipe (201) is connected with the heating liquid chamber, the front end of the pressing water feeding pipe (202) is connected with the pressing liquid chamber, the front end of the heating water return pipe (301) is connected with the heating liquid chamber, and the front end of the pressing water return pipe (302) is connected with the pressing liquid chamber through hoses (9).

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