Diaphragm type filter press

Abstract

The utility model relates to a diaphragm type filter press which comprises a frame body, a hollow frame is arranged above the frame body, a plurality of groups of diaphragm plates are arranged in the frame in a sliding manner, sliding rails are arranged below the front side frame and the rear side frame, filter press plate pulling trolleys are connected to the sliding rails in a sliding manner, and a portal frame is connected between the front group of filter press plate pulling trolleys and the rear group of filter press plate pulling trolleys. A washing mechanism is arranged on the portal frame, the washing mechanism is used for washing gaps between the adjacent diaphragm plates from the upper part, the washing mechanism comprises a washing pipeline, an outlet of the washing pipeline is correspondingly formed above the gaps between the adjacent diaphragm plates, and the washing mechanism can be used for washing filter cake positions formed by materials on the filter press; the flushing mechanism is mounted on a portal frame between the plate pulling trolleys of the filter press, can move along with the trolleys, performs flushing along with the action of the plate pulling trolleys of the filter press in the unloading process, and can perform flushing operation on filter cakes formed on the left side and the right side of a single diaphragm plate in sequence; and the flushing effect is further enhanced.

Description

Technical Field

[0001] The utility model relates to the field of industrial equipment, in particular to a diaphragm filter press. Background Art

[0002] A filter press is a mechanical device that uses a special filter medium to apply pressure to a liquid, causing it to seep out. It's a commonly used solid-liquid separation device. A diaphragm filter press, also known as a membrane filter press, is a conventional filter press with an elastic membrane installed between the filter plate and filter cloth. Once the material is fed, high-pressure fluid or gas is injected into the diaphragm, causing the membrane to inflate and compress the filter cake, further dehydrating it.

[0003] Filter presses usually use a filter press plate trolley to assist in unloading. After the material is dehydrated by the diaphragm filter press, filter cakes will form between the filter plates. Due to the large amount of pressure in the early stage, the filter cakes may adhere to the diaphragm plates and make it inconvenient to unload. At the same time, after the material squeezed by the diaphragm plates of the filter press falls off, residues may be left on the diaphragm plates, which are difficult to clean. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a diaphragm filter press that can assist the filter press in unloading with a plate pulling trolley and facilitate the cleaning of the diaphragm plate.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is a diaphragm filter press, including a frame, a hollow frame is provided above the frame, several groups of diaphragm plates are slidably arranged in the frame, and slide rails are provided under the front and rear side frames. The slide rails are slidably connected to the filter press pull plate trolley, and a gantry is connected between the front and rear groups of filter press pull plate trolleys. The gantry is provided with a flushing mechanism, which is used to flush the gap between adjacent diaphragm plates from above.

[0006] The beneficial effects of the above technical solution are: a flushing mechanism is arranged above the diaphragm plate, which can flush the gap between adjacent diaphragm plates from above, making it convenient to clean the diaphragm plate, and the flushing mechanism is arranged on the gantry between the front and rear groups of filter press plate pulling trolleys, and can move with the filter press plate pulling trolley. During the unloading process, it can be flushed in coordination with the movement of the filter press plate pulling trolley, and the filter cake formed on the left and right sides of a single diaphragm plate can be flushed in sequence, reducing the installation amount of the impact mechanism.

[0007] Furthermore, the flushing mechanism includes a flushing pipeline, and the outlet of the flushing pipeline is correspondingly arranged above the gap between adjacent diaphragm plates.

[0008] Beneficial effect: The flushing pipeline is arranged above the gap between adjacent diaphragm plates, and can flush the filter cake position formed by the material on the filter press.

[0009] Furthermore, a high-pressure nozzle is provided at the outlet of the flushing pipeline.

[0010] Beneficial effect: High-pressure nozzles further enhance the flushing effect.

[0011] Furthermore, the flushing pipeline includes a main pipe, the input end of the main pipe is connected to the air intake pipe, the air intake pipe is fixed on the top of the gantry, and the output end of the main pipe is provided with multiple groups of branch pipes, which are connected to the main pipe at intervals along the width direction of the diaphragm plate.

[0012] Beneficial effect: The airflow from the air inlet pipe is flushed out through the flushing pipeline, which can provide a downward impact force to the filter cake in the gap between adjacent diaphragm plates when the filter press plate trolley is unloading, making it more convenient for the filter cake to fall. Multiple groups of branch pipelines are arranged at intervals along the width direction of the diaphragm plate, which can make the airflow impact range cover the entire gap space, ensuring that there are no dead corners in the gap area between adjacent diaphragm plates and all can be impacted by the airflow.

[0013] Furthermore, the branch pipelines are arranged in an inverted U shape, the top of the inverted U-shaped structure is connected to the main pipe, and the two outlets at the bottom of the inverted U-shaped structure correspond to the left gap and the right gap of the diaphragm plate respectively.

[0014] Beneficial effect: The plate pulling trolley action of the filter press is for a single diaphragm plate. For a single diaphragm plate, filter cakes may form in the gaps on the left and right sides of the diaphragm plate. Therefore, the two outlets at the bottom of the inverted U-shape of the branch pipeline correspond to the gaps on the left and right sides of the diaphragm plate respectively.

[0015] Furthermore, the input end of the main pipe is connected to the water inlet pipe, the water inlet pipe is fixed on the top of the gantry, a first switch valve is provided on the air inlet pipe, and a second switch valve is provided on the water inlet pipe.

[0016] Beneficial effect: On the basis of air flow flushing, a water washing function is further added. After the filter press has processed the material, the first switch valve is closed, and the second switch valve is opened. The water flow can use the filter press pulling trolley to clean the diaphragm plate with water.

[0017] Furthermore, the air inlet pipe at the front end of the first switch valve and the water inlet pipe at the front end of the second switch valve are both hoses.

[0018] Beneficial effect: The hose can cooperate with the movement of the filter press pull plate trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 yes Figure 1 A is an enlarged schematic diagram;

[0021] In the figure: 1-frame, 2-frame, 3-diaphragm plate, 4-pressure plate, 41-hydraulic rod, 5-bottom plate, 51-feed pipe, 6-main air pressure pipe, 61-sub-air pressure pipe, 601-charging valve, 602-pressure relief valve, 7-slide rail, 8-filter press plate pulling trolley, 81-plate pulling claw, 82-plate removing claw, 9-main pipe, 91-branch pipeline, 11-air inlet pipe, 16-gantry, 101-first switch valve, 12-water inlet pipe, 102-second switch valve. DETAILED DESCRIPTION

[0022] The following is a further detailed description of a diaphragm filter press of the present invention in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1-2 As shown, a diaphragm filter press of the present invention comprises a frame 1, a hollow frame 2 is provided above the frame 1, several groups of diaphragm plates 3 are slidably arranged in the frame 2, a through hole is provided in the center of the diaphragm plate 3 and sliding parts 31 are provided at the front and rear ends of the diaphragm plate 3, the sliding parts 31 are slidably mounted on the frame 2, a pressing plate 4 and a bottom plate 5 are provided at the left and right ends of the frame 2, the outside of the pressing plate 4 is connected to a hydraulic rod 41, a feed hole is provided at the bottom plate 5 corresponding to the through hole position of the diaphragm plate 3, the feed hole is connected to the feed pipe 51, and each diaphragm plate 3 is connected to a sub-air pressure pipe 61 on the side, and all the sub-air pressure pipes 61 are connected to the total air pressure pipe 6, and a charging valve 601 and a pressure relief valve 602 are provided at the front and rear ends of the total air pressure pipe 6 respectively. During use, when After the feeding is completed, high-pressure fluid or gas medium can be injected into the diaphragm plate 3 through the pressure charging valve 601. At this time, the entire diaphragm will bulge and compress the filter cake to achieve further dehydration of the filter cake. Slide rails 7 are set under the front and rear side frames 2. The slide rails 7 are slidably connected to the filter press plate pulling trolley 8. The filter press plate pulling trolley 8 includes a plate pulling claw 81 and a plate taking claw 82. The detailed specific structure of the filter press plate pulling trolley 8 refers to the patent application number 201521004027.4, and is named a utility model patent for the filter press plate pulling trolley. No specific description is made here. The front and rear two groups of filter press plate pulling trolleys 8 are connected to a gantry 16, and a flushing mechanism is set on the gantry 16. The flushing mechanism is used to flush the gap between adjacent diaphragm plates 3 from above.

[0024] In this embodiment, the flushing mechanism includes a flushing pipeline, and the outlet of the flushing pipeline is correspondingly arranged above the gap between adjacent diaphragm plates 3, so that the filter cake position formed by the material on the filter press can be flushed. During the unloading process, the flushing is carried out in coordination with the movement of the filter press pull plate trolley 8, and the filter cake formed on the left and right sides of a single diaphragm plate 3 can be flushed in sequence. A high-pressure nozzle is set at the outlet of the flushing pipeline to further enhance the flushing effect.

[0025] Specifically, the flushing pipeline includes a main pipe 9, the input end of the main pipe 9 is connected to the air intake pipe 11, the air intake pipe 11 is fixed on the top of the gantry 16, and a plurality of branch pipes 91 are arranged at the output end of the main pipe 9. The plurality of branch pipes 91 are connected to the main pipe 9 at intervals along the width direction of the diaphragm plate 3. The airflow of the air intake pipe 1 rushes out through the flushing pipeline, which can provide a downward impact on the filter cake in the gap between adjacent diaphragm plates 3 when the filter press plate pulling trolley 8 is unloading, making it more convenient for the filter cake to fall. At the same time, the airflow can perform preliminary flushing on the diaphragm plate 3 to prevent filter cake residue from remaining on the diaphragm plate 3; the plurality of branch pipes 91 are arranged at intervals along the width direction of the diaphragm plate 3 so that the range of the airflow impact covers the entire gap space, ensuring that there are no dead corners in the gap area of adjacent diaphragm plates 3 and all can be impacted by the airflow.

[0026] In this embodiment, the branch pipeline 91 is arranged in an inverted U shape, and the top of the inverted U-shaped structure is connected to the main pipe 9. The inverted U shape is symmetrical about the main pipe 9, which facilitates the production of the branch pipeline 91. The two outlets at the bottom of the inverted U-shaped structure correspond to the left gap and the right gap of the diaphragm plate 3 respectively. The action of the filter press plate pulling trolley 8 is for a single diaphragm plate 3. For a single diaphragm plate 3, the left gap and the right gap of the diaphragm plate 3 may form filter cakes. Therefore, the two outlets at the bottom of the inverted U shape of the branch pipeline 91 correspond to the left gap and the right gap of the diaphragm plate 3 respectively, to ensure that the filter cake is not missed during the unloading process.

[0027] In this embodiment, the input end of the main pipe 9 is connected to the water inlet pipe 12, and the water inlet pipe 12 is fixed on the top of the gantry 16. A first switch valve 101 is set on the air inlet pipe 11, and a second switch valve 102 is set on the water inlet pipe 12. On the basis of air flow flushing, a water washing function is further added. When the first switch valve 101 is opened and the second switch valve 102 is closed, the flushing pipeline is flushed with air flow, which is convenient for unloading and preliminary purge; after the material filtration is completed, the first switch valve 101 is closed and the second switch valve 102 is opened, and the flushing pipeline is flushed with water flow, which is convenient for cleaning the diaphragm plate 3. The air inlet pipe 11 at the front end of the first switch valve 101 and the water inlet pipe 12 at the front end of the second switch valve 102 are both hoses, which can cooperate with the movement of the filter press plate pulling trolley.

[0028] When the utility model is in use, firstly, the pressure plate 4 is pushed by the hydraulic rod 41 to squeeze all the diaphragm plates 3 onto the bottom plate 5, the hydraulic rod 41 is set to a pressure-maintaining state, and the material is injected into the filter press through the feed pipe 51, so that the material fills the left and right side gaps of each diaphragm plate 3, and then the gas is injected through the pressure-charging valve 61 at the front end of the total air pressure pipe 6 to inflate all the diaphragm plates 3, thereby squeezing the material to form a dehydrated filter cake. After observing that the equipment no longer discharges water, the pressure relief valve 62 is first opened to remove the air pressure in the diaphragm plate 3, and then the hydraulic rod 41 is retracted to press the pressure plate 4. Pull open, the filter press plate pulling trolley 8 starts to move the pulling plate. At this time, the single diaphragm plate 3 is located between the pulling plate claw 81 and the plate removing claw 82 of the filter press plate pulling trolley 8. Open the first switch valve 101, and the air flow of the air inlet pipe 11 passes through the branch pipe 91 to flush the filter cake in the gap on the left and right sides of the diaphragm plate 3, assisting the material dropping and blowing away the filter cake residue on the diaphragm plate 3. After the material filtration is completed, close the first switch valve 101 and open the second switch valve 102. The water flow of the water inlet pipe 12 cleans the left and right sides of the diaphragm plate 3 one by one through the filter press plate pulling trolley 8.

[0029] A diaphragm filter press of the present invention has the following advantages: first, the flushing mechanism is connected to the air inlet pipe 11, and the air flow can flush the gap between adjacent diaphragm plates 3 from above through the flushing mechanism, which is convenient for the dropping of filter cake and the blowing of filter cake residue; second, the flushing mechanism is connected to the water inlet pipe 12, and the diaphragm plates 3 can be cleaned with the help of the filter press plate pulling trolley 8 after the equipment is shut down; third, the flushing mechanism is arranged on the gantry 16 between the front and rear groups of filter press plate pulling trolleys 8, and can move with the filter press plate pulling trolley 8 to flush the diaphragm plates 3 one by one in sequence, which is easy to use and saves the number of installed flushing pipes.

[0030] In the above embodiment, a high-pressure nozzle is provided at the outlet of the flushing pipeline. In other embodiments, a high-pressure nozzle may not be provided at the outlet of the flushing pipeline.

[0031] In the above embodiment, the flushing pipeline includes a main pipe, the input end of the main pipe is connected to the air intake pipe, the air intake pipe is fixed on the top of the gantry, and multiple groups of branch pipes are set at the output end of the main pipe. The multiple groups of branch pipes are connected to the main pipe at intervals along the width direction of the diaphragm plate. In other embodiments, multiple groups of branch pipes may not be set.

[0032] In the above embodiment, the branch pipeline is arranged in an inverted U shape, the top of the inverted U-shaped structure is connected to the main pipe, and the two outlets at the bottom of the inverted U-shaped structure correspond to the left gap and the right gap of the diaphragm plate respectively. In other embodiments, the branch pipeline may not be arranged in an inverted U shape, but may be arranged in an alternating left-right staggered manner.

[0033] In the above embodiment, the input end of the main pipe is connected to the water inlet pipe, the water inlet pipe is fixed on the top of the gantry, a first switch valve is set on the air inlet pipe, and a second switch valve is set on the water inlet pipe. In other embodiments, the water inlet pipe may not be set.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A diaphragm filter press, characterized in that: The invention comprises a frame (1), wherein a hollow frame (2) is provided above the frame (1), a plurality of groups of diaphragm plates (3) are slidably arranged in the frame (2), a slide rail (7) is provided below the front and rear side frames (2), a filter press plate pulling trolley (8) is slidably connected to the slide rail (7), a gantry (16) is connected between the front and rear groups of filter press plate pulling trolleys (8), and a flushing mechanism is provided on the gantry (16), which is used to flush the gap between adjacent diaphragm plates (3) from above.

2. A diaphragm filter press according to claim 1, characterized in that: The flushing mechanism comprises a flushing pipeline, and the outlet of the flushing pipeline is correspondingly arranged above the gap between adjacent diaphragm plates (3).

3. A diaphragm filter press according to claim 2, characterized in that: A high-pressure nozzle is provided at the outlet of the flushing pipeline.

4. A diaphragm filter press according to claim 2, characterized in that: The flushing pipeline includes a main pipe (9), the input end of the main pipe (9) is connected to an air inlet pipe (11), the air inlet pipe (11) is fixed to the top of the gantry (16), and the output end of the main pipe (9) is provided with a plurality of branch pipes (91), and the plurality of branch pipes (91) are connected to the main pipe (9) at intervals along the width direction of the diaphragm plate (3).

5. A diaphragm filter press according to claim 4, characterized in that: The branch pipeline (91) is arranged in an inverted U shape, the top of the inverted U-shaped structure is connected to the main pipe (9), and the two outlets at the bottom of the inverted U-shaped structure correspond to the left gap and the right gap of the diaphragm plate (3), respectively.

6. A diaphragm filter press according to claim 5, characterized in that: The input end of the main pipe (9) is connected to a water inlet pipe (12), which is fixed to the top of the gantry (16). A first switch valve (101) is provided on the air inlet pipe (11), and a second switch valve (102) is provided on the water inlet pipe (12).

7. A diaphragm filter press according to claim 6, characterized in that: The air inlet pipe (11) at the front end of the first switch valve (101) and the water inlet pipe (12) at the front end of the second switch valve (102) are both hoses.

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