Filter press

Abstract

The utility model provides a filter press and belongs to the technical field of filter presses. The filter press comprises a rack assembly, the rack assembly comprises a fixing frame, a main beam is fixedly installed in the middle of one side of the fixing frame, a thrust plate is fixedly installed at one end of the main beam, a pressing plate is slidably connected to one end of the top of the main beam, and a plurality of filter pressing units are arranged between the thrust plate and the pressing plate. Each filter pressing unit is composed of a first filter pressing plate and a second filter pressing plate, filter pressing grooves are formed in the opposite sides of the first filter pressing plate and the second filter pressing plate, filter screens are fixedly installed in the filter pressing grooves, air bag diaphragms are arranged in the first filter pressing plate and the second filter pressing plate, and the air bag diaphragms are arranged in the air bag diaphragms. The top of the first filter pressing plate and the top of the second filter pressing plate are each provided with an air bag connector, the air bag connectors are communicated with the air bag diaphragms, the phenomenon that local water cannot be fully discharged can be effectively avoided, and the filter pressing plate has high practical value.

Description

Technical Field

[0001] The utility model relates to the technical field of filter presses, and more specifically, to a filter press. Background Art

[0002] A filter press is a device used for separating solids and liquids, and is widely used in industries such as chemical engineering, pharmaceuticals, food processing, mining, and environmental protection. It separates the liquid in the suspension from the solid matter through pressure to achieve the purpose of dehydration or concentration. The working principle of a filter press is usually to intercept the solid particles in the suspension through a filter medium, while the liquid is discharged through the filter cloth. The filter press for sludge pressure filtration and dehydration is a filter press specifically used for processing slurry-like materials, and common application scenarios include sludge dehydration in sewage treatment plants, tailings treatment in the mining industry, etc.

[0003] Based on the above, the inventor found the following problems: The filter plates currently used in filter presses usually have filter grooves on both sides, and an airbag partition is arranged in the middle of the filter plate. The airbag diaphragm is inflated to close the filter chambers formed by the filter grooves on both sides for pressure filtration, which easily results in uneven filter cake thickness, causing the moisture in some areas not to be fully discharged, and thus being inconvenient to use.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies to provide a filter press, in order to achieve a more practical value. Summary of the Utility Model

[0005] In order to solve the above technical problems, an embodiment of the utility model provides a filter press, which is specifically realized through the following technical solutions:

[0006] A filter press includes a frame assembly. The frame assembly includes a fixed frame. In the middle of one side of the fixed frame, a main beam is fixedly installed. At one end of the main beam, a thrust plate is fixedly installed. At one end of the top of the main beam, a pressing plate is slidably connected. Between the thrust plate and the pressing plate, there are several filter units. Each filter unit is composed of a first filter plate and a second filter plate. Filter grooves are formed on the opposite sides of the first filter plate and the second filter plate. A filter screen is fixedly installed inside the filter grooves. Airbag diaphragms are arranged inside both the first filter plate and the second filter plate. Airbag interfaces are arranged at the tops of both the first filter plate and the second filter plate. The airbag interfaces are communicated with the airbag diaphragms.

[0007] The beneficial effects of adopting the above further solution are as follows: by arranging a number of filter pressing units between the thrust plate and the pressing plate, it is convenient for the thrust plate and the pressing plate to press each filter pressing unit therebetween, realizing the function of filter pressing the material; by providing filter pressing grooves on the opposite sides of the first filter pressing plate and the second filter pressing plate, it is convenient for each filter pressing unit to form a filter pressing cavity only between the first filter pressing plate and the second filter pressing plate, facilitating filter pressing the material inside the filter pressing cavity; by connecting the airbag interface with the airbag diaphragm, it is convenient for the airbag interface to connect to an external air supply pipeline, facilitating inflating the airbag diaphragm, enabling the two airbag diaphragms to be inflated to squeeze and filter the filter pressing cavity therebetween, thereby fully squeezing and drying the material inside the filter pressing cavity, and making the filter cake uniform, effectively avoiding the phenomenon that local moisture cannot be fully discharged.

[0008] Further, sliding frames are fixedly installed on both sides of the first filter pressing plate and the second filter pressing plate, and the sliding frames are slidably connected to the main beam.

[0009] The beneficial effects of adopting the above further solution are as follows: by slidably connecting the sliding frames with the main beam, it is convenient for the filter pressing units to slide on the top of the main beam, facilitating the pressing plate to cooperate with the thrust plate to tightly press the filter pressing units.

[0010] Further, a moving beam is provided at the bottom of the main beam, a moving rod is fixedly installed on one side of the sliding frame, the moving rod on the first filter pressing plate is arranged at the top end of one side of the sliding frame, and the moving rod on the second filter pressing plate is arranged at the bottom end of one side of the sliding frame.

[0011] The beneficial effects of adopting the above further solution are as follows: by arranging the moving rod on the first filter pressing plate at the top end of one side of the sliding frame and the moving rod on the second filter pressing plate at the bottom end of one side of the sliding frame, it is convenient for the plate opening trolley to move on the top of the moving beam, and the vertically and alternately staggered moving rods facilitate the plate opening trolley to accurately open the plate and discharge the slag from the filter pressing cavity between the first filter pressing plate and the second filter pressing plate when discharging the slag.

[0012] Further, a discharge pipe is fixedly installed inside the sliding frame, and a discharge interface is provided at one end of the moving rod.

[0013] The beneficial effects of adopting the above further solution are as follows: by fixedly installing a discharge pipe inside the sliding frame and providing a discharge interface at one end of the moving rod, it is convenient for the discharge pipe to connect the discharge interface with the interiors of the first filter pressing plate and the second filter pressing plate, facilitating the connection of an external pipeline with the discharge interface, thereby facilitating the collection of the filtrate.

[0014] Further, a feed interface is provided in the middle of one side of the thrust plate, feed holes are provided in the middle of both the first filter pressing plate and the second filter pressing plate, and the feed interface is communicated with the feed holes.

[0015] The beneficial effect of adopting the above further solution is that by connecting the feeding interface with the feeding hole, it is convenient for the external pipeline to be connected with the feeding interface, thus facilitating the pumping of materials into the pressure filtration chamber for pressure filtration.

[0016] Further, a solenoid valve is provided at one end of the top of the feeding interface away from the pressure filtration unit, and a pressure gauge is provided at the other end of the top of the feeding interface.

[0017] The beneficial effect of adopting the above further solution is that by providing a solenoid valve at one end of the top of the feeding interface away from the pressure filtration unit and a pressure gauge at the other end of the top of the feeding interface, it is convenient to close the feeding interface by the solenoid valve during pressure filtration, thereby maintaining the internal pressure of the pressure filtration chamber, and the pressure gauge is convenient for monitoring the internal pressure value of the pressure filtration chamber.

[0018] Further, a hydraulic press is fixedly installed in the middle of the fixing frame, and the output end of the hydraulic press is fixedly connected to the pressing plate.

[0019] The beneficial effect of adopting the above further solution is that by fixedly installing a hydraulic press in the middle of the fixing frame and fixedly connecting the output end of the hydraulic press to the pressing plate, it is convenient for the hydraulic press to drive the pressing plate to move when working.

[0020] Further, a control box is fixedly installed on one side of the top of the fixing frame, and an oil pump is fixedly installed on one side of the bottom of the fixing frame. The output end of the oil pump is communicated with the hydraulic press.

[0021] The beneficial effect of adopting the above further solution is that by communicating the output end of the oil pump with the hydraulic press, it is convenient for the control box to control the device to work, and the oil pump controls the hydraulic press to work.

[0022] Further, a first lifting ear is fixed on the top of the fixing frame, and a second lifting ear is fixedly installed on the top of the thrust plate.

[0023] The beneficial effect of adopting the above further solution is that by fixing a first lifting ear on the top of the fixing frame and fixedly installing a second lifting ear on the top of the thrust plate, it is convenient to use lifting equipment to drive the device to move.

[0024] The beneficial effects of the present utility model are as follows: A filter press obtained by the above design in the present utility model. In this filter press, a number of filter pressing units are provided between the thrust plate and the pressing plate, which facilitates the thrust plate and the pressing plate to press each filter pressing unit therebetween, realizing the function of filtering the material. On the opposite sides of the first filter pressing plate and the second filter pressing plate, filter pressing grooves are provided, which facilitates each filter pressing unit to form a filter pressing cavity only between the first filter pressing plate and the second filter pressing plate, facilitating the filtering of the material inside the filter pressing cavity. The airbag interface is communicated with the airbag diaphragm, which facilitates the airbag interface to connect to an external air supply pipeline, facilitating the inflation of the airbag diaphragm, enabling the two airbag diaphragms to be inflated to squeeze and filter the filter pressing cavity therebetween, thereby fully squeezing and drying the material inside the filter pressing cavity, and enabling the filter cake to be uniform, effectively avoiding the occurrence of the phenomenon that local moisture cannot be fully discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0026] Figure 1 Schematic perspective structure of a filter press provided by the present utility model Figure 1 ;

[0027] Figure 2 Schematic perspective structure of a filter press provided by the present utility model Figure 2 ;

[0028] Figure 3 Exploded view of the filter pressing unit provided by the present utility model;

[0029] Figure 4 Cross-sectional view of the first filter pressing plate provided by the present utility model;

[0030] Figure 5 Schematic perspective structure diagram of the frame assembly provided by the present utility model.

[0031] In the figure: 101, frame assembly; 10101, fixed frame; 10102, main beam; 10103, moving beam; 10104, hydraulic press; 10105, control box; 10106, pressing plate; 10107, thrust plate; 10108, oil pump; 10109, first lifting ear; 10110, second lifting ear; 10111, feed interface; 10112, solenoid valve; 10113, pressure gauge; 102, filter pressing unit; 10201, first filter pressing plate; 10202, second filter pressing plate; 10203, filter pressing tank; 10204, feed hole; 10205, sliding frame; 10206, moving rod; 10207, discharge pipe; 10208, discharge interface; 10209, airbag interface; 10210, airbag diaphragm; 10211, filter screen. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] Embodiment 1 of a filter press of the present utility model

[0035] The present utility model provides the following technical solutions: As Figures 1 - 5As shown in the figure, a filter press includes a frame assembly 101. The frame assembly 101 includes a fixed frame 10101. In the middle of one side of the fixed frame 10101, a main beam 10102 is fixedly installed. At one end of the main beam 10102, a thrust plate 10107 is fixedly installed. At one end of the top of the main beam 10102, a pressing plate 10106 is slidably connected. Between the thrust plate 10107 and the pressing plate 10106, there are a number of filter pressing units 102. By having a number of filter pressing units 102 between the thrust plate 10107 and the pressing plate 10106, it is convenient for the thrust plate 10107 and the pressing plate 10106 to press each of the filter pressing units 102 therebetween, realizing the function of filtering the material. Each filter pressing unit 102 is composed of a first filter pressing plate 10201 and a second filter pressing plate 10202. On the opposite sides of the first filter pressing plate 10201 and the second filter pressing plate 10202, filter pressing grooves 10203 are provided. By having filter pressing grooves 10203 on the opposite sides of the first filter pressing plate 10201 and the second filter pressing plate 10202, it is convenient for each filter pressing unit 102 to form a filter pressing cavity only between the first filter pressing plate 10201 and the second filter pressing plate 10202, facilitating the filtering of the material inside the filter pressing cavity. Inside the filter pressing groove 10203, a filter screen 10211 is fixedly installed. Inside the first filter pressing plate 10201 and the second filter pressing plate 10202, there are airbag diaphragms 10210. At the tops of the first filter pressing plate 10201 and the second filter pressing plate 10202, there are airbag interfaces 10209. The airbag interfaces 10209 are communicated with the airbag diaphragms 10210. By communicating the airbag interfaces 10209 with the airbag diaphragms 10210, it is convenient for the airbag interfaces 10209 to connect to an external air supply pipeline, facilitating the inflation of the airbag diaphragms 10210, so that the two airbag diaphragms 10210 are inflated to squeeze and filter the filter pressing cavity therebetween, thereby fully squeezing and drying the material inside the filter pressing cavity, and enabling the filter cake to be uniform, effectively avoiding the occurrence of the phenomenon that local moisture cannot be fully discharged.

[0036] Embodiment 2 of a filter press of the present utility model

[0037] Refer to Figures 1 - 5As shown in the figure, sliding frames 10205 are fixedly installed on both sides of the first filter pressing plate 10201 and the second filter pressing plate 10202. The sliding frames 10205 are slidably connected to the main beam 10102. By the sliding connection between the sliding frames 10205 and the main beam 10102, it is convenient for the filter pressing unit 102 to slide on the top of the main beam 10102, facilitating the pressing plate 10106 to cooperate with the thrust plate 10107 to tightly press the filter pressing unit 102. A moving beam 10103 is provided at the bottom of the main beam 10102. A moving rod 10206 is fixedly installed on one side of the sliding frame 10205. The moving rod 10206 on the first filter pressing plate 10201 is arranged at the top end of one side of the sliding frame 10205, and the moving rod 10206 on the second filter pressing plate 10202 is arranged at the bottom end of one side of the sliding frame 10205. By arranging the moving rod 10206 on the first filter pressing plate 10201 at the top end of one side of the sliding frame 10205 and the moving rod 10206 on the second filter pressing plate 10202 at the bottom end of one side of the sliding frame 10205, it is convenient for the plate-opening trolley to move on the top of the moving beam 10103. The vertically and alternately arranged moving rods 10206 facilitate the plate-opening trolley to accurately open the plate and discharge the slag in the filter pressing cavity between the first filter pressing plate 10201 and the second filter pressing plate 10202 during plate opening. A discharge pipe 10207 is fixedly installed inside the sliding frame 10205, and a discharge interface 10208 is provided at one end of the moving rod 10206. By fixedly installing the discharge pipe 10207 inside the sliding frame 10205 and providing the discharge interface 10208 at one end of the moving rod 10206, it is convenient for the discharge pipe 10207 to connect the discharge interface 10208 with the interiors of the first filter pressing plate 10201 and the second filter pressing plate 10202, facilitating the connection between the external pipeline and the discharge interface 10208, thereby facilitating the collection of the filtrate.

[0038] Embodiment Three of a Filter Press of the Present Utility Model

[0039] Refer to Figures 1 - 5As shown in the figure, a feed interface 10111 is provided in the middle of one side of the thrust plate 10107. Feed holes 10204 are provided in the middle of the first filter plate 10201 and the second filter plate 10202. The feed interface 10111 is communicated with the feed holes 10204. By communicating the feed interface 10111 with the feed holes 10204, it is convenient for an external pipeline to be communicated with the feed interface 10111, so as to facilitate pumping materials into the filter chamber for filtration. An electromagnetic valve 10112 is provided at one end of the top of the feed interface 10111 away from the filter unit 102, and a pressure gauge 10113 is provided at the other end of the top of the feed interface 10111. By providing an electromagnetic valve 10112 at one end of the top of the feed interface 10111 away from the filter unit 102 and a pressure gauge 10113 at the other end of the top of the feed interface 10111, it is convenient for the electromagnetic valve 10112 to close the feed interface 10111 during filtration, so as to maintain the internal pressure of the filter chamber. The pressure gauge 10113 is convenient for monitoring the internal pressure value of the filter chamber. A hydraulic press 10104 is fixedly installed in the middle of the fixing frame 10101, and the output end of the hydraulic press 10104 is fixedly connected with the pressing plate 10106. By fixedly installing a hydraulic press 10104 in the middle of the fixing frame 10101 and fixedly connecting the output end of the hydraulic press 10104 with the pressing plate 10106, it is convenient for the hydraulic press 10104 to drive the pressing plate 10106 to move. A control box 10105 is fixedly installed on one side of the top of the fixing frame 10101, and an oil pump 10108 is fixedly installed on one side of the bottom of the fixing frame 10101. The output end of the oil pump 10108 is communicated with the hydraulic press 10104. By communicating the output end of the oil pump 10108 with the hydraulic press 10104, it is convenient for the control box 10105 to control the operation of the device. The oil pump 10108 controls the operation of the hydraulic press 10104. A first lifting ear 10109 is fixed on the top of the fixing frame 10101, and a second lifting ear 10110 is fixedly installed on the top of the thrust plate 10107. By fixing a first lifting ear 10109 on the top of the fixing frame 10101 and fixedly installing a second lifting ear 10110 on the top of the thrust plate 10107, it is convenient to use a lifting device to drive the device to move.

[0040] Specifically, the working principle of this filter press is as follows: During use, a first lifting ear 10109 is fixed to the top of the fixed frame 10101, and a second lifting ear 10110 is fixedly installed on the top of the thrust plate 10107, which facilitates the use of lifting equipment to drive the device for movement. The output end of the oil pump 10108 is connected to the hydraulic press 10104, which facilitates the control box 10105 to control the operation of the device. The oil pump 10108 controls the operation of the hydraulic press 10104. A hydraulic press 10104 is fixedly installed in the middle of the fixed frame 10101, and the output end of the hydraulic press 10104 is fixedly connected to the pressing plate 10106, which facilitates the operation of the hydraulic press 10104 to drive the pressing plate 10106 to move. The feeding interface 10111 is connected to the feeding hole 10204, which facilitates the connection of an external pipeline to the feeding interface 10111, thereby facilitating the pumping of materials into the filter chamber for filtration. An electromagnetic valve 10112 is provided at one end of the top of the feeding interface 10111 away from the filter unit 102, and a pressure gauge 10113 is provided at the other end of the top of the feeding interface 10111. This facilitates the electromagnetic valve 10112 to close the feeding interface 10111 during filtration, thereby maintaining the internal pressure of the filter chamber. The pressure gauge 10113 facilitates monitoring the pressure value inside the filter chamber. Filtering grooves 10203 are provided on the opposite sides of the first filter plate 10201 and the second filter plate 10202, which facilitates each filter unit 102 to form a filter chamber only between the first filter plate 10201 and the second filter plate 10202, facilitating the filtration of materials inside the filter chamber. The airbag interface 10209 is connected to the airbag diaphragm 10210, which facilitates the connection of an external air supply pipeline to the airbag interface 10209, facilitating the inflation of the airbag diaphragm 10210, enabling the two airbag diaphragms 10210 to inflate and squeeze the filter chamber therebetween for filtration, thereby fully squeezing and drying the materials inside the filter chamber, and enabling the filter cake to be uniform, effectively avoiding the phenomenon that local moisture cannot be fully discharged. A discharge pipe 10207 is fixedly installed inside the sliding frame 10205, and a discharge interface 10208 is provided at one end of the moving rod 10206, which facilitates the discharge pipe 10207 to connect the discharge interface 10208 with the inside of the first filter plate 10201 and the second filter plate 10202, facilitating the connection of an external pipeline to the discharge interface 10208, thereby facilitating the collection of filtrate. The moving rod 10206 on the first filter plate 10201 is arranged at the top of one side of the sliding frame 10205, and the moving rod 10206 on the second filter plate 10202 is arranged at the bottom of one side of the sliding frame 10205, which facilitates the opening plate trolley to move on the top of the moving beam 10103. The sequentially staggered moving rods 10206 up and down facilitate the opening plate trolley to accurately open the filter chamber between the first filter plate 10201 and the second filter plate 10202 for slag discharge during plate opening.

[0041] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A filter press, characterized in that: The invention comprises a frame assembly (101), wherein the frame assembly (101) comprises a fixed frame (10101), a main beam (10102) is fixedly mounted in the middle of one side of the fixed frame (10101), a thrust plate (10107) is fixedly mounted at one end of the main beam (10102), a pressing plate (10106) is slidably connected to one end of the top of the main beam (10102), a plurality of filter press units (102) are arranged between the thrust plate (10107) and the pressing plate (10106), and each of the filter press units (102) comprises a first filter press plate (10201) and a second filter press plate (10107). 10202), a filter press groove (10203) is provided on one side opposite to the first filter press plate (10201) and the second filter press plate (10202), a filter screen (10211) is fixedly installed inside the filter press groove (10203), an airbag diaphragm (10210) is provided inside the first filter press plate (10201) and the second filter press plate (10202), an airbag interface (10209) is provided on the top of the first filter press plate (10201) and the second filter press plate (10202), and the airbag interface (10209) is connected to the airbag diaphragm (10210).

2. A filter press according to claim 1, characterized in that: Sliding frames (10205) are fixedly mounted on both sides of the first filter press plate (10201) and the second filter press plate (10202), and the sliding frames (10205) are slidably connected to the main beam (10102).

3. A filter press according to claim 2, characterized in that: A movable beam (10103) is provided at the bottom of the main beam (10102); a movable rod (10206) is fixedly installed on one side of the sliding frame (10205); the movable rod (10206) on the first filter press plate (10201) is arranged at the top end of one side of the sliding frame (10205); and the movable rod (10206) on the second filter press plate (10202) is arranged at the bottom end of one side of the sliding frame (10205).

4. A filter press according to claim 3, characterized in that: A discharge pipe (10207) is fixedly installed inside the sliding frame (10205), and a discharge interface (10208) is provided at one end of the moving rod (10206).

5. A filter press according to claim 1, characterized in that: A feed interface (10111) is provided in the middle of one side of the thrust plate (10107), and a feed hole (10204) is provided in the middle of both the first filter press plate (10201) and the second filter press plate (10202), and the feed interface (10111) is connected to the feed hole (10204).

6. A filter press according to claim 5, characterized in that: A solenoid valve (10112) is provided at one end of the top of the feed interface (10111) away from the filter press unit (102), and a pressure gauge (10113) is provided at the other end of the top of the feed interface (10111).

7. A filter press according to claim 1, characterized in that: A hydraulic press (10104) is fixedly installed in the middle of the fixed frame (10101), and an output end of the hydraulic press (10104) is fixedly connected to a pressing plate (10106).

8. A filter press according to claim 7, characterized in that: A control box (10105) is fixedly mounted on one side of the top of the fixed frame (10101), and an oil pump (10108) is fixedly mounted on one side of the bottom of the fixed frame (10101), wherein the output end of the oil pump (10108) is connected to the hydraulic press (10104).

9. A filter press according to claim 1, characterized in that: A first lifting ear (10109) is fixed to the top of the fixing frame (10101), and a second lifting ear (10110) is fixedly installed to the top of the thrust plate (10107).

Images