Drainage device of filter press

Abstract

The utility model discloses a drainage device of a filter press, which comprises a water collecting tank, a water outlet pipe, a first reversing three-way valve, a connecting pipe, a first shell, a second shell, a drainage structure and a pollution discharge structure. Water flows from a water outlet pipe to a connecting pipe through a first reversing three-way valve, the connecting pipe conveys the water into a first shell, a water quality sensor in the first shell detects the water, under the condition that the water meets the standard, an external controller is fed back to open an electromagnetic valve of a water drainage pipe on the front side of the first shell, and the electromagnetic valve is closed after the water is discharged to an external clean water tank; when the water does not meet the standard, an external controller is fed back to reverse a first reversing three-way valve, water flows into a second shell, meanwhile, an electromagnetic valve of a blow-off pipe on the rear side of the first shell is opened, a water pump is controlled to pump water in the first shell into an external sludge tank, then the electromagnetic valve is closed, and the effect of automatic drainage is achieved.

Description

Technical Field

[0001] The utility model relates to the field of filter presses, in particular to a drainage device for a filter press. Background Art

[0002] The filter press uses a special filter medium to exert a certain pressure on the object, causing the liquid to seep out. It is a commonly used solid-liquid separation equipment. It was used in chemical production in the early 18th century and is still widely used in chemical, pharmaceutical, metallurgical, dye, food, brewing and environmental protection industries.

[0003] The Chinese patent with the patent number CN217809157U discloses a controllable drainage device for filter press mud leakage. By installing a branch conduit at the bottom of the water collecting funnel, and installing a water storage tank at each of the two water outlet ends of the branch conduit, the coordinated use of the servo motor and the diverter plate can control the flow direction of the liquid after the sludge is pressed and filtered, so that the two water storage tanks can be used crosswise, and then it can be clearly observed whether the liquid after each filter press is mixed with leaked mud, thereby realizing the direct discharge of clean water without mud, and the liquid containing mud is concentrated and re-filtered, so as to ensure that the discharged water after each filter press is clean water;

[0004] Although the above-mentioned controllable drainage device for filter press mud leakage has certain advantages in the ability to avoid mud leakage, it requires workers to observe the liquid in the water tank with the naked eye. The filter press works for a long time, the labor intensity of the workers is high, and the labor cost of the enterprise is high. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a drainage device for a filter press.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a drainage device for a filter press, comprising a water collecting trough, a water outlet pipe, a first reversing three-way valve, a connecting pipe, a first shell, a second shell, a drainage structure and a sewage discharge structure, the middle part of the lower end surface of the water collecting trough is fixedly connected to one end of the water outlet pipe, and the other end of the water outlet pipe is fixedly connected to the first reversing three-way valve, the left and right ends of the first reversing three-way valve are respectively fixedly connected to one end of the connecting pipe, and the other ends of the left and right groups of connecting pipes are respectively fixedly connected to the middle parts of the upper end surfaces of the first shell and the second shell, the lower middle sides of the front end surfaces of the first shell and the second shell are fixedly connected to the drainage structure, and the lower middle sides of the rear end surfaces of the first shell and the second shell are fixedly connected to the sewage discharge structure, the drainage structure comprises a drainage pipe, a three-way pipe and a clean water pipe, one ends of the two groups of drainage pipes are respectively fixedly connected to the three-way pipe, and the front end of the three-way pipe is fixedly connected to one end of the clean water pipe, and the other end of the clean water pipe is fixedly connected to the external clean water tank, and the other ends of the two groups of drainage pipes are respectively fixedly connected to the first shell and the second shell.

[0007] Optionally, the sewage discharge structure includes a sewage discharge pipe, a second reversing three-way valve, a water pump and a delivery pipe, one end of the two groups of sewage discharge pipes are respectively fixedly connected to the second reversing three-way valve, the rear end of the second reversing three-way valve is fixedly connected to the water pump, the upper end of the water pump is fixedly connected to the delivery pipe, and the other ends of the two groups of sewage discharge pipes are respectively fixedly connected to the first outer shell and the second outer shell.

[0008] Optionally, the first shell and the second shell are symmetrically distributed, and water quality sensors are provided inside the first shell and the second shell, which is conducive to detecting the water quality inside the first shell and the second shell respectively through two groups of water quality sensors.

[0009] Optionally, both the first reversing three-way valve and the second reversing three-way valve are electric three-way valves, which are convenient for electric control and save labor.

[0010] Optionally, solenoid valves are installed on the front side of the drain pipe and the rear side of the sewage pipe, which is beneficial for discharge control of the drain pipe and the sewage pipe.

[0011] Optionally, the upper end of the delivery pipe is fixedly connected to a sludge pool extracted by an external filter press, so as to facilitate the delivery of turbid liquid to the sludge pool for re-filtration.

[0012] Optionally, the first reversing three-way valve, the second reversing three-way valve, two groups of water quality sensors and four groups of solenoid valves are all controlled by a program set by an external PLC controller, which is conducive to automatic control through the program to achieve the effect of automatic drainage.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses a drainage device for a filter press. By arranging a drainage structure and a sewage discharge structure, the filter press filters water contained in sludge to the inside of a water collecting tank. Water flows from a water outlet pipe to a connecting pipe through a first reversing three-way valve. The connecting pipe sends water to the inside of a first shell. A water quality sensor inside the first shell detects the water. If the water meets the standard, a feedback external controller opens the solenoid valve of the drainage pipe on the front side of the first shell, discharges the water to an external clean water tank, and then closes the solenoid valve. If the water does not meet the standard, a feedback external controller reverses the first reversing three-way valve, and the water flows to the inside of a second shell. At the same time, the solenoid valve of the sewage discharge pipe on the rear side of the first shell is opened, and a water pump is controlled to pump the water inside the first shell to the external sludge tank, and then closes the solenoid valve, thereby achieving an automatic drainage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the first shell of the utility model structure;

[0018] Figure 4 It is a schematic diagram of the drainage structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the sewage discharge structure of the utility model.

[0020] Among them: water collecting tank-1, water outlet pipe-2, first reversing three-way valve-3, connecting pipe-4, first shell-5, second shell-6, drainage structure-7, sewage structure-8, water quality sensor-51, drainage pipe-71, three-way pipe-72, clean water pipe-73, sewage pipe-81, second reversing three-way valve-82, water pump-83, delivery pipe-84. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The utility model provides a drainage device for a filter press, comprising a water collecting tank 1, a water outlet pipe 2, a first reversing three-way valve 3, a connecting pipe 4, a first shell 5, a second shell 6, a drainage structure 7 and a sewage discharge structure 8. The middle part of the lower end surface of the water collecting tank 1 is fixedly connected to one end of the water outlet pipe 2, and the other end of the water outlet pipe 2 is fixedly connected to the first reversing three-way valve 3, the left and right ends of the first reversing three-way valve 3 are respectively fixedly connected to one end of the connecting pipe 4, and the other ends of the left and right two groups of connecting pipes 4 are respectively fixedly connected to the middle parts of the upper end surfaces of the first shell 5 and the second shell 6, the lower sides of the middle parts of the front end surfaces of the first shell 5 and the second shell 6 are fixedly connected to the drainage structure 7, and the first shell 5 and the second shell 6 are fixedly connected to the drainage structure 7. The lower middle side of the rear end face is fixedly connected to the sewage structure 8, and the drainage structure 7 includes a drainage pipe 71, a tee pipe 72 and a clean water pipe 73. One end of the two groups of drainage pipes 71 are respectively fixedly connected to the tee pipe 72, and the front end of the tee pipe 72 is fixedly connected to one end of the clean water pipe 73, and the other end of the clean water pipe 73 is fixedly connected to the external clean water tank, and the other ends of the two groups of drainage pipes 71 are respectively fixedly connected to the first shell 5 and the second shell 6. The first shell 5 and the second shell 6 are symmetrically distributed, and water quality sensors 51 are provided inside the first shell 5 and the second shell 6, which is conducive to detecting the water quality inside the first shell 5 and the second shell 6 through the two groups of water quality sensors 51.

[0023] See also Figure 5 The utility model provides a drainage device for a filter press. The drainage structure 8 includes a drainage pipe 81, a second reversing three-way valve 82, a water pump 83 and a delivery pipe 84. One end of the two groups of drainage pipes 81 are respectively fixedly connected to the second reversing three-way valve 82, the rear end of the second reversing three-way valve 82 is fixedly connected to the water pump 83, the upper end of the water pump 83 is fixedly connected to the delivery pipe 84, and the other ends of the two groups of drainage pipes 81 are respectively fixedly connected to the first shell 5 and the second shell 6. The first reversing three-way valve 3 and the second reversing three-way valve 82 are both electric three-way valves, which are convenient for electric Automatic control saves labor, solenoid valves are installed on the front side of the drain pipe 71 and the rear side of the sewage pipe 81, which is conducive to discharge control of the drain pipe 71 and the sewage pipe 81, and the upper end of the delivery pipe 84 is fixedly connected to the sludge pool extracted by the external filter press, so as to facilitate the delivery of turbid liquid to the sludge pool for re-filtering, and the first reversing three-way valve 3, the second reversing three-way valve 83, the two groups of water quality sensors 51 and the four groups of solenoid valves are all controlled by the program set by the external PLC controller, which is conducive to automatic control through the program to achieve the effect of automatic drainage.

[0024] Here’s how it works:

[0025] First, the new device is placed at the required location and connected to the circuit;

[0026] Second, the water contained in the filter press sludge is filtered, and the filtered water falls into the inside of the collecting tank 1. The filtered water will flow through the outlet pipe 2 and the first reversing three-way valve 3 to the connecting pipe 4 on the left. The connecting pipe 4 transports the filtered water to the inside of the first shell 5, and the water quality of the filtered water is detected by the water quality sensor 51 inside the first shell 5;

[0027] Third, when the water quality sensor 51 of the first shell 5 detects that the filtered water meets the standard, the feedback external controller opens the solenoid valve of the drainage pipe on the front side of the first shell 5, so that the filtered water inside the first shell 5 flows through the drainage pipe 71 to the three-way valve 72, and is finally discharged to the external clean water tank through the clean water pipe 73, and then the solenoid valve is closed. When the water quality sensor 51 of the first shell 5 detects that the filtered water does not meet the standard, the feedback external controller reverses the first three-way reversing valve 3, so that the second filtered water will flow to the inside of the second shell 6, and at the same time, the solenoid valve of the sewage pipe 81 on the rear side of the first shell 5 is opened, and the water pump 83 is started to pump the filtered water inside the first shell 5 through the delivery pipe 84 to the external sludge tank, and then the solenoid valve is closed, thereby achieving the effect of re-filtering the turbid water, and the whole process is automated, saving labor and reducing enterprise costs.

[0028] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0029] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0030] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A filter press drainage device, characterized in that: The utility model comprises a water collecting tank (1), a water outlet pipe (2), a first reversing three-way valve (3), a connecting pipe (4), a first shell (5), a second shell (6), a drainage structure (7) and a sewage discharge structure (8), wherein the middle part of the lower end surface of the water collecting tank (1) is fixedly connected to one end of the water outlet pipe (2), and the other end of the water outlet pipe (2) is fixedly connected to the first reversing three-way valve (3), the left and right ends of the first reversing three-way valve (3) are respectively fixedly connected to one end of the connecting pipe (4), and the other ends of the left and right two groups of connecting pipes (4) are respectively fixedly connected to the middle parts of the upper end surfaces of the first shell (5) and the second shell (6), and the first shell (5) and the second shell (6) are fixedly connected to each other. The lower middle side of the front end surface of the shell (6) is fixedly connected to the drainage structure (7), and the lower middle sides of the rear end surfaces of the first shell (5) and the second shell (6) are fixedly connected to the sewage structure (8). The drainage structure (7) comprises a drainage pipe (71), a three-way pipe (72) and a clean water pipe (73). One end of the two groups of drainage pipes (71) are respectively fixedly connected to the three-way pipe (72), and the front end of the three-way pipe (72) is fixedly connected to one end of the clean water pipe (73), and the other end of the clean water pipe (73) is fixedly connected to an external clean water tank. The other ends of the two groups of drainage pipes (71) are respectively fixedly connected to the first shell (5) and the second shell (6).

2. A filter press drainage device according to claim 1, characterized in that: The sewage discharge structure (8) comprises a sewage discharge pipe (81), a second reversing three-way valve (82), a water pump (83) and a delivery pipe (84); one end of the two groups of sewage discharge pipes (81) are respectively fixedly connected to the second reversing three-way valve (82); the rear end of the second reversing three-way valve (82) is fixedly connected to the water pump (83); the upper end of the water pump (83) is fixedly connected to the delivery pipe (84); and the other ends of the two groups of sewage discharge pipes (81) are respectively fixedly connected to the first shell (5) and the second shell (6).

3. A filter press drainage device according to claim 1, characterized in that: The first shell (5) and the second shell (6) are symmetrically distributed, and water quality sensors (51) are arranged inside the first shell (5) and the second shell (6).

4. A filter press drainage device according to claim 2, characterized in that: The first reversing three-way valve (3) and the second reversing three-way valve (82) are both electric three-way valves.

5. A filter press drainage device according to claim 2, characterized in that: Solenoid valves are installed on the front side of the drain pipe (71) and the rear side of the sewage pipe (81).

6. A filter press drainage device according to claim 2, characterized in that: The upper end of the delivery pipe (84) is fixedly connected to the sludge pool extracted by the external filter press.

7. A filter press drainage device according to claim 5, characterized in that: The first reversing three-way valve (3), the second reversing three-way valve (82), the two groups of water quality sensors (51) and the four groups of solenoid valves are all controlled by a program set by an external PLC controller.

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