Filter plate with cleaning device

Abstract

The invention relates to a filter plate with a cleaning device, which comprises a filter plate body, the cleaning devices are installed at the upper end and the lower end of the filter plate body respectively, each cleaning device comprises a shell, a pushing device is installed at the end, away from the filter plate body, of each shell, a fixing device is fixedly connected to the telescopic end of each pushing device, and scraping plates are hinged and fixed to the two sides of each fixing device respectively; notches are formed in the two sides, close to the mud surface, of the shell correspondingly; wherein after the two adjacent filter plate bodies are separated, the fixing devices push the scraping plates out of the notches, and the scraping plates scrape mud surfaces on the filter plate bodies under the action of the pushing devices. According to the filter plate with the cleaning device, the labor intensity is reduced, the filter plate is controlled by the pressure sensing element, the filter plate is self-cleaned no matter the filter press is opened in a single block or rapidly, the cleaning time of the filter plate of the whole filter press is shortened, and the working efficiency of the filter press is improved.

Description

Technical Field

[0001] The invention relates to the field of mechanical equipment, and in particular to a filter plate with a cleaning device. Background Art

[0002] Filter press is a commonly used solid-liquid separation equipment. It is a mechanical equipment that applies a certain pressure to the filtered object to make the liquid seep out. It is mainly composed of filter plates, thrust plates, pressure plates and hydraulic components. When working, the hydraulic device pushes the pressure plate to move and compresses the filter plate between the thrust plate and the pressure plate. The filter plates are pressed against each other to form a filter chamber. The material is pumped to the filter chamber by a high-pressure material pump, and the liquid is discharged through the filter cloth mesh and flow channel. The solid forms a filter cake in the filter chamber. After the filter plate is pulled open, the filter cake separates from the filter cloth under the action of gravity and falls into the filter cake conveying equipment and is sent to the designated location, thereby realizing solid-liquid separation.

[0003] After the existing filter press is used, after the multiple filter plates are separated, the filter cake formed by the filtration will fall off the filter plate under its own gravity. When the filter cake falls off by its own weight, there will be residual filter residue accumulated at the bottom of the filter plate, which will cause the filter plate to lift up during filtration. Over time, the filter cloth of the filter press may cause blockage and wear. Blockage of the filter cloth will cause the instantaneous filtration pressure of the filter press to increase. Working under a pressure exceeding the normal filtration pressure will further worsen the degree of blockage of the filter cloth. Long-term use under excessive filtration pressure will cause the filter plate to deform and crack. At this time, the filtration effect of the filter press is greatly reduced and the filter press must be shut down for maintenance and repair. It is usually necessary to remove the filter cloth of the original filter plate and then clean it again or use an automatic filter cloth washing device, which requires the suspension of the filter press filtration operation. Therefore, the greater the degree of filter cake shedding, the fewer shutdowns for maintenance and the longer the working time of the filter press.

[0004] In order to make the solids filtered on the filter press quickly separate from the filter plate, a vibrating mechanism is usually used to remove the sludge solids from the filter plate. The following types of vibrating mechanisms are generally used: varicose mechanism, which uses the spring force to make the filter cloth repeatedly shake during the plate pulling process to facilitate the adhered filter cake to fall off; robot hand vibrating, through the pneumatic vibrating device on the robot hand, the filter plate vibrates up and down to help the filter cake fall; gantry vibrating, by dragging the filter cloth to make the filter cloth shake, so as to achieve filter cake separation; The above-mentioned vibration devices basically drive the filter plate to vibrate up and down or drive the filter cloth to shake by beating. Although it can promote the shedding of the filter cake, it still has some shortcomings. The vibration method can promote the shedding of the mud cake, but the vibration has attenuation, which leads to the mud cake not falling off thoroughly, and the vibration mechanism is complex in design and inconvenient to maintain.

[0005] Therefore, it is necessary to form a device for cleaning the filter plate through improvement. Summary of the invention

[0006] The main purpose of the present invention is to provide a device for cleaning filter plates. The filter cake does not need to be cleaned manually, which reduces labor. It is controlled by a pressure-sensitive element. Regardless of whether the filter press opens a single plate or opens the plates quickly each time, each filter plate is self-cleaning, which greatly shortens the cleaning time of the filter plates of the entire filter press, allows the next filtration operation to begin more quickly, and improves the working efficiency of the filter press.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: A filter plate with a cleaning device, comprising: Filter plate body; A cleaning device, the cleaning device is respectively installed at the upper and lower ends of the filter plate body, the cleaning device comprises a shell, a pushing device is installed at the end of the shell away from the filter plate body, the telescopic end of the pushing device is fixedly connected to a fixing device, scrapers are respectively hingedly fixed on both sides of the fixing device, and notches are respectively arranged on both sides of the shell close to the mud surface; Wherein, after two adjacent filter plate bodies are separated, the fixing device pushes the scraper out of the notch, and the scraper scrapes the mud surface on the filter plate body under the action of the pushing device.

[0008] Furthermore, the fixing device includes a fixing plate, an insert plate, and an elastic member A. The upper surface of the fixing plate is fixedly connected to the telescopic end of the pushing device. A slot is provided in the fixing plate. The elastic member A is installed in the slot. One end of the insert plate is hingedly fixedly connected to the scraper, and the other end is inserted into the slot and squeezes the elastic member A.

[0009] Furthermore, a slide groove A connected to the slot is provided on the fixed plate, and a sliding block plugged into the slide groove A is provided on the plug plate.

[0010] Furthermore, a right-angle torsion spring is installed at the hinge between the insert plate and the scraper plate.

[0011] Furthermore, the scraper has a right-angled triangle shape in longitudinal cross-section, and its right-angled surface is hinged and fixed to the fixing device. Vertically arranged slide grooves B are arranged on both sides of the scraper, and grooves A are arranged on both side plates of the shell. A T-shaped block A is slidably connected in the groove A, and a compression spring B is arranged between the T-shaped block A and the bottom edge of the groove A, and a limit block A inserted into the slide groove B is fixedly connected at its end. Grooves B are also arranged on both side plates of the shell, and a T-shaped block B is slidably connected in the groove B. A compression spring C is arranged between the T-shaped block B and the bottom edge of the groove B, and a roller is fixedly connected between the two T-shaped blocks B. After the two adjacent filter plate bodies are separated, the scraper is set so that its right-angled side is attached to the side surface of the filter plate body under the action of the fixing device, the T-shaped block A and the roller.

[0012] Furthermore, an air cavity is arranged at the upper end of the outer side surface of the scraper, an air outlet of the air cavity is arranged parallel to the inclined surface of the scraper, and the air cavity is connected to an air inlet pipe arranged on the shell through a hose.

[0013] Furthermore, a pressure-sensitive element is installed on the outer wall of the air cavity, and the pressure-sensitive element is electrically connected to a controller of the filter press.

[0014] Furthermore, the pushing device is a multi-section electric telescopic rod.

[0015] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. The filter cake does not need to be cleaned manually, which reduces labor and improves equipment efficiency.

[0016] 2. Controlled by the pressure-sensitive element, no matter the filter press opens a single plate at a time or opens the plates quickly, each filter plate is self-cleaning, which greatly shortens the cleaning time of the filter press plate, allows quicker entry into the next filtration operation, and improves the working efficiency of the filter press.

[0017] 3. The scraper has an air cavity and high-pressure gas to assist cleaning. The cleaning degree of the filter plate is improved, the scraper greatly reduces or avoids the adhesion of filter cake on the scraper, and the service life of the scraper is increased.

[0018] 4. Installing a right-angle torsion spring in the mounting plate allows the scraper to rotate into place when it pops out, and at the same time cooperates with the clamping filter plate to reduce the gap between the scraper and the filter plate, making the cleaning more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the patent structure.

[0020] Figure 2 Schematic diagram of the upper cleaning device structure.

[0021] Figure 3 Schematic diagram of the shell cross-section structure.

[0022] Figure 4 Enlarged structural diagram of the fixed plate.

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure at the fixed plate.

[0024] Figure 6 This is a schematic diagram of the structure at T-block A.

[0025] Figure 7 This is a schematic diagram of the structure at T-block B.

[0026] Figure 8 This is a schematic diagram of the structure installed on the filter press. DETAILED DESCRIPTION

[0027] The purpose, advantages and features of the present invention will be illustrated and explained by the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0028] In the description of the scheme, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0029] like Figures 1 to 7 As shown, A filter plate with a cleaning device, comprising: Filter plate body 10; A cleaning device 20, the cleaning device 20 is respectively installed at the upper and lower ends of the filter plate body 10, the cleaning device 20 comprises a shell 201, a pushing device 202 is installed at the end of the shell 201 away from the filter plate body 10, the telescopic end of the pushing device 202 is fixedly connected to a fixing device 203, and scrapers 204 are respectively hingedly fixed on both sides of the fixing device 203, and notches 2011 are respectively provided on both sides of the shell 201 close to the mud surface; After two adjacent filter plate bodies 10 are separated, the fixing device 203 pushes the scraper 204 out of the notch 2011 , and the scraper 204 scrapes the mud surface on the filter plate body 10 under the action of the pushing device 202 .

[0030] Specifically, the filter plate body 10 is installed on the filter press. When the filter plate bodies 10 are closed, adjacent cleaning devices 20 squeeze each other, so that the scraper 204 enters the shell 201 through the slot 2011. After the mud cake filtration is completed, the pushing device 202 pushes the scraper 204 out of the shell 201 to scrape the mud surface on the filter plate body 10.

[0031] Furthermore, the fixing device 203 includes a fixing plate 2031, an insert plate 2032, and an elastic member A2033. The upper surface of the fixing plate 2031 is fixedly connected to the telescopic end of the pushing device 202. A slot 20311 is provided in the fixing plate 2031. The elastic member A2033 is installed in the slot 20311. One end of the insert plate 2032 is hingedly fixedly connected to the scraper 204, and the other end is inserted into the slot 20311 and squeezes the elastic member A2033.

[0032] Furthermore, the fixing plate 2031 is provided with a slide groove A20312 connected to the slot 20311, and the plug plate 2032 is provided with a slider 20321 plugged into the slide groove A20312.

[0033] Specifically, by setting the fixing device 203 as a fixing plate 2031, a plug plate 2032, and an elastic member A2033, the fixing plate 2031 is fixed to the telescopic end of the pushing device 202, so that the pushing device 202 can push the fixing plate 2031 to move up and down, so that the scraper 204 can scrape the mud cake surface along the filter plate body 10, and the elastic member A2033, the slot 20311, and the plug plate 2032 are set. When the scraper 204 is squeezed against each other, the plug plate 2032 is pushed into the slot 20311 and the elastic member A2033 is compressed. After the filter plate body 10 is separated, the elastic member A2033 pushes the plug plate 2032 to drive the scraper 204 to extend out of the shell 201 to scrape the mud cake on the filter plate body 10. At the same time, the use of the slide groove A20312 and the slider 20321 can make the movement of the plug plate 2032 more stable.

[0034] Furthermore, a right-angle torsion spring 20322 is installed at the hinge between the insert plate 2032 and the scraper plate 204 .

[0035] Specifically, the right-angle torsion spring 20322 can be provided so that when the insert plate 2032 pushes the scraper plate 204 out of the housing 201 , the scraper plate 204 can rotate to a certain extent under the action of the right-angle torsion spring 20321 , so that the scraper plate 204 fits the filter plate body 10 more closely.

[0036] Furthermore, the scraper 204 has a right-angled triangle shape in longitudinal section, and its right-angled surface is hinged and fixed to the fixing device 203. Vertically arranged slide grooves B2041 are arranged on both sides of the scraper 204. Grooves A2011 are arranged on both side plates of the shell 201. A T-shaped block A2012 is slidably connected in the groove A2011. A compression spring B20121 is arranged on the bottom edge of the T-shaped block A2012 and the groove A2011, and a limit block A2013 inserted into the slide groove B2041 is fixedly connected at its end. The two side plates of the shell 201 are also provided with grooves B2014, in which a T-shaped block B2015 is slidably connected, a compression spring C20141 is provided between the T-shaped block B2015 and the bottom edge of the groove B2014, and a roller 20151 is fixedly connected between the two T-shaped blocks B2015. After the two adjacent filter plate bodies (10) are separated, the scraper 204 is set so that its right-angled edge fits the side of the filter plate body 10 under the action of the fixing device 203, the T-shaped block A2012 and the roller 20151.

[0037] Specifically, the scraper 204 is configured to have a right triangle cross section, wherein a right angle side can directly fit the filter plate body 10 , and the oblique side can make it easier for the mud cake to separate from the scraper 204 .

[0038] Furthermore, an air cavity 2042 is disposed at the upper end of the outer side surface of the scraper 204 , and an air outlet of the air cavity 2042 is disposed parallel to the inclined surface of the scraper 204 . The air cavity 2042 is connected to an air inlet pipe 205 disposed on the shell 201 through a hose 2043 .

[0039] Specifically, by setting the air cavity 2042, when the scraper 204 is working, high-pressure gas can be introduced through the air inlet pipe 205, and the high-pressure gas can be ejected from the air outlet to self-clean the scraper 204 while assisting the scraper 204 in scraping off the filter cake stuck on the filter plate body 10.

[0040] Furthermore, a pressure-sensitive element 20421 is installed on the outer wall of the air cavity 2042, and the pressure-sensitive element 20421 is electrically connected to the controller of the filter press.

[0041] Specifically, by setting a pressure-sensitive element 20421, the pressure-sensitive element 20421 is electrically connected to the controller of the filter press, wherein the pressure-sensitive element 20421 can adopt the RP-L-110 thin film pressure sensor of Ligan Technology. When the filter plates of the filter press move away from each other and the pressure of the pressure-sensitive element 20421 is reduced to a certain value, the air source connected to the air inlet pipe 205 provides high-pressure gas. After the cleaning device 20 is reset, the air source is controlled to cut off the supply of high-pressure gas.

[0042] Furthermore, the pushing device 202 is a multi-section electric telescopic rod.

[0043] Specifically, the pushing device 202 adopts a multi-section electric telescopic rod, which can be easily installed. At the same time, it is small in size and has a long extension length, which meets the use requirements.

[0044] During specific operation, the filter plate with cleaning device is installed as follows: Figure 8 On the filter press shown, when the filter press is working, the filter plates squeeze each other and the two adjacent scrapers 204 are squeezed into the shell 201, and the filter press works normally. When the filter press is finished once, the filter plates are separated one by one, and the scrapers 204 are pushed out of the shell 201 under the action of the plug plate 2032. At the same time, under the action of the T-shaped block A2012 and the roller 20151, the right-angled sides of the scrapers 204 are attached to the side of the filter plate body 10, and then under the action of the pushing device 202, the scrapers 204 on both sides are attached to the side of the filter plate body 10 to shovel off the mud cake. When the pressure on the pressure-sensitive element 20421 on the scraper 204 is lower than the set value, the compressed air enters the air inlet pipe 205, enters the air cavity 2042 through the hose 2043, and is blown out from its air outlet. The high-pressure gas ejected along the inclined surface of the scraper 204 assists the scraper 204 in scraping off the filter cake adhered to the filter plate body 10 while self-cleaning the scraper 204.

[0045] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A filter plate with a cleaning device, comprising: Filter plate body (10); A cleaning device (20), the cleaning device (20) being mounted at the upper and lower ends of the filter plate body (10), the cleaning device (20) comprising a shell (201), a pushing device (202) being mounted at the end of the shell (201) away from the filter plate body (10), a fixing device (203) being fixedly connected to the telescopic end of the pushing device (202), a scraper (204) being hingedly fixed on both sides of the fixing device (203), and notches (2011) being arranged on both sides of the shell (201) close to the mud surface; in, After two adjacent filter plate bodies (10) are separated, the fixing device (203) pushes the scraper (204) out of the notch (2011), and the scraper (204) scrapes the mud surface on the filter plate body (10) under the action of the pushing device (202).

2. A device for cleaning a filter plate according to claim 1, characterized in that: The fixing device (203) comprises a fixing plate (2031), an inserting plate (2032), and an elastic member A (2033); the upper surface of the fixing plate (2031) is fixedly connected to the telescopic end of the pushing device (202); a slot (20311) is provided in the fixing plate (2031); the elastic member A (2033) is installed in the slot (20311); one end of the inserting plate (2032) is hingedly fixedly connected to the scraper (204); the other end is inserted into the slot (20311) and presses the elastic member A (2033).

3. A device for cleaning a filter plate according to claim 2, characterized in that: The fixed plate (2031) is provided with a slide groove A (20312) connected to the slot (20311), and the plug plate (2032) is provided with a slider (20321) plugged into the slide groove A (20312).

4. A device for cleaning a filter plate according to claim 2, characterized in that: A right-angle torsion spring (20322) is installed at the hinge between the inserting plate (2032) and the scraping plate (204).

5. The device for cleaning a filter plate according to claim 1, characterized in that: The scraper (204) has a right-angled triangle shape in longitudinal cross section, and its right-angled surface is hingedly fixed to the fixing device (203). Vertically arranged slide grooves B (2041) are arranged on both sides of the scraper (204). Grooves A (2011) are arranged on both side plates of the shell (201). A T-shaped block A (2012) is slidably connected in the groove A (2011). A compression spring B (20121) is arranged at the bottom edge of the T-shaped block A (2012) and the groove A (2011), and a limit block A (2013) inserted into the slide groove B (2041) is fixedly connected at its end. The shell ( A groove B (2014) is also provided on the two side plates of the filter plate (201), a T-shaped block B (2015) is slidably connected in the groove B (2014), a compression spring C (20141) is provided between the T-shaped block B (2015) and the bottom edge of the groove B (2014), a roller (20151) is fixedly connected between the two T-shaped blocks B (2015), and after the two adjacent filter plate bodies (10) are separated, the scraper (204) is arranged so that its right-angled edge fits the side of the filter plate body (10) under the action of the fixing device (203), the T-shaped block A (2012) and the roller (20151).

6. A device for cleaning a filter plate according to claim 4, characterized in that: An air cavity (2042) is provided at the upper end of the outer surface of the scraper (204); an air outlet of the air cavity (2042) is arranged parallel to the inclined surface of the scraper (204); and the air cavity (2042) is connected to an air inlet pipe (205) arranged on the housing (201) via a hose (2043).

7. A device for cleaning a filter plate according to claim 5, characterized in that: A pressure-sensitive element (20421) is installed on the outer wall of the air cavity (2042), and the pressure-sensitive element (20421) is electrically connected to a controller of the filter press.

8. The device for cleaning a filter plate according to claim 1, characterized in that: The pushing device (202) is a multi-section electric telescopic rod.

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