Plate-and-frame filter press

Abstract

The utility model discloses a plate-and-frame filter press. The plate-and-frame filter press comprises a front cover plate, a rear cover plate, a rack, a filter pressing assembly and a liquid receiving disc, the front cover plate is connected with the instrument assembly through a feeding pipe, the other side of the front cover plate is combined with the rear cover plate to install the filter pressing assembly, a liquid receiving disc is arranged below the front cover plate, the rear cover plate is connected with a threaded driving rod, one end of the rear cover plate is provided with a rotating handle, the filter pressing assembly comprises a plurality of filter frames and filter plates, the filter frames and the filter plates are alternately connected, and a filter frame water inlet groove is communicated with a filter frame cavity. A circular sealing strip is arranged outside the filter frame cavity; i-shaped sealing rings are arranged outside the filter plate water inlet groove and the filter plate water outlet groove, a supporting net plate is arranged in the filter plate cavity, and a metal filter net is laid on one side of the supporting net plate; according to the plate-and-frame filter press, the I-shaped sealing ring and the circular sealing strip are introduced, and the metal filter screen is adopted to replace traditional filter cloth, so that the sealing performance of the plate-and-frame filter press is improved, the damage condition of the filter cloth is reduced, and the filtering effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plate-frame filter presses, in particular to a plate-frame filter press. Background Art

[0002] In the prior art, a plate and frame filter is composed of filter plates and filter frames arranged in groups, which are placed on two crossbeams of a frame and are compressed by a compression device. A mesh plate is designed on the surface of the filter plate to install and support the filter cloth and guide the flow direction of the filtered liquid. The filter cloth is installed between the filter plate and the filter frame. In addition to the filtering function, it also acts as a sealing gasket. The filter frame and the filter plate form a liquid flow channel after being combined, which is used to pass the suspension, washing water and lead out the filtrate.

[0003] However, the existing plate and frame filter does not have a sealing ring. The filter cloth is used not only for filtering but also as a sealing gasket. However, due to the porosity and poor elasticity of the filter cloth, the sealing effect of the filter cloth alone is not ideal, and leakage is serious during the filtration process. At the same time, the filter cloth needs to be customized and tailored to meet the required size. The filter cloth will also absorb components of the filtrate during the filtration process. After filtration, the filter medium and impurities are adsorbed on the filter cloth, making it difficult to clean and disinfect. In addition, the pressure during the filtration process is too high, and the filter cloth is easily damaged, affecting the filtration effect. Utility Model Content

[0004] The purpose of the utility model is to provide a plate and frame filter press to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plate-frame filter press, comprising a front cover, a rear cover, a frame, a filter press assembly and a liquid receiving tray, wherein the frame is provided with a front cover, one side of the front cover is connected with a feed pipe, the feed pipe is provided with an instrument assembly, the other side of the front cover is provided with a rear cover, a filter press assembly is installed between the front cover and the rear cover, a liquid receiving tray is provided below the filter press assembly, one side of the rear cover is connected with a threaded drive rod, the threaded drive rod is inserted in the frame, and one end of the threaded drive rod is provided with a rotating handle;

[0006] The filter press assembly includes a plurality of filter frames and filter plates, and the plurality of filter frames and filter plates are alternately connected, a filter frame water inlet groove is provided at the upper portion of the filter frame, a filter frame water outlet groove is provided at the lower portion of the filter frame, a filter frame chamber is provided at the middle portion of the filter frame, the filter frame water inlet groove is communicated with the filter frame chamber, and a circular sealing strip is provided outside the filter frame chamber; a filter plate water inlet groove is provided at the upper portion of the filter plate, a filter plate water outlet groove is provided at the lower portion of the filter plate, a filter plate chamber is provided at the middle portion of the filter plate, the filter plate water outlet groove is communicated with the filter plate chamber, an I-shaped sealing ring is provided outside the filter plate water inlet groove and the filter plate water outlet groove, a supporting mesh plate is provided in the filter plate chamber, and a metal filter mesh is laid on one side of the supporting mesh plate.

[0007] Preferably, the frame is further provided with a circular tube for supporting the filter frame and the filter plate, arc-shaped grooves are provided on both sides of the filter frame and the filter plate, and the filter frame and the filter plate are slidably connected to the circular tube via the arc-shaped grooves.

[0008] Preferably, pulleys are provided on both sides of the rear cover plate, and the pulleys are slidably connected to the round tube.

[0009] Preferably, a roller for movement is provided below the liquid receiving pan, a discharge port is provided on one side of the liquid receiving pan, and a valve switch is connected via a pipeline.

[0010] Preferably, the instrument assembly includes a pressure gauge and a bleed valve.

[0011] Preferably, the circular sealing strip and the I-shaped sealing ring are made of silicone rubber.

[0012] Preferably, the supporting mesh plate and the metal filter are made of 316L metal.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model introduces an I-shaped sealing ring and a circular sealing strip to replace the traditional filter cloth as a sealing gasket, thereby improving the sealing performance of the plate and frame filter press, effectively reducing leakage, and enhancing the filtering effect; the filter cloth is no longer required to have both filtering and sealing functions, reducing the complexity and cost of customized tailoring of the filter cloth, and reducing the cost of use.

[0015] 2. The utility model uses 316L metal support mesh and metal filter to effectively reduce the adsorption of filter media and impurities on the filter, which is convenient for cleaning and disinfection and reduces the easy damage of traditional filter cloth. In addition, the circular sealing strip and I-shaped sealing ring made of silicone rubber are easy to clean and corrosion-resistant, which improves the durability and maintenance convenience of the equipment.

[0016] 3. The utility model provides a roller and a discharge port under the liquid receiving tray, and connects the valve switch through a pipeline, thereby realizing automatic discharge of the filtrate, saving labor costs and operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a front view structural schematic diagram of a plate and frame filter press.

[0018] Figure 2 The utility model is a left-side structural schematic diagram of a plate and frame filter press.

[0019] Figure 3 It is a structural schematic diagram of the filter frame in the utility model.

[0020] Figure 4 for Figure 3 Schematic cross-sectional view along the AA direction.

[0021] Figure 5 It is a structural schematic diagram of the filter plate in the utility model.

[0022] Figure 6 for Figure 5 Schematic cross-sectional view along the BB direction.

[0023] Figure 7 This is a schematic diagram of the installation of the filter plate and the metal filter screen in the utility model.

[0024] Figure 8 The utility model is a schematic diagram of the installation of the filter frame, filter plate, support mesh plate and metal filter screen.

[0025] In the figure: 1. front cover; 2. rear cover; 3. frame; 4. filter press assembly; 41. filter frame; 411. filter frame water inlet; 412. filter frame water outlet; 413. filter frame chamber; 414. circular sealing strip; 42. filter plate; 421. filter plate water inlet; 422. filter plate water outlet; 423. filter plate chamber; 424. I-shaped sealing ring; 425. support mesh plate; 426. metal filter; 5. liquid collecting tray; 51. roller; 52. valve switch; 6. feed pipe; 7. instrument assembly; 8. threaded drive rod; 9. rotating handle; 10. round tube; 11. arc groove; 12. pulley. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides Figure 1-8A plate and frame filter press shown in the figure comprises a front cover plate 1, a rear cover plate 2, a frame 3, a filter press assembly 4 and a liquid receiving tray 5. The frame 3 is provided with the front cover plate 1, one side of the front cover plate 1 is connected with a feed pipe 6, and the feed pipe 6 is provided with an instrument assembly 7. The other side of the front cover plate 1 is provided with a rear cover plate 2, a filter press assembly 4 is installed between the front cover plate 1 and the rear cover plate 2, and a liquid receiving tray 5 is provided below the filter press assembly 4. One side of the rear cover plate 2 is connected with a threaded drive rod 8, and the threaded drive rod 8 is inserted into the frame 3, and a rotating handle 9 is provided at one end of the threaded drive rod 8; the filter press assembly 4 comprises a plurality of filter frames 41 and filter plates 42, and the plurality of filter frames 41 and filter plates 42 are alternately connected, and the upper part of the filter frame 41 is provided with a filter. A filter frame water inlet 411 is provided, a filter frame water outlet 412 is provided at the lower part of the filter frame 41, a filter frame chamber 413 is provided in the middle part of the filter frame 41, the filter frame water inlet 411 is connected with the filter frame chamber 413, and a circular sealing strip 414 is provided outside the filter frame chamber 413; a filter plate water inlet 421 is provided at the upper part of the filter plate 42, a filter plate water outlet 422 is provided at the lower part of the filter plate 42, a filter plate chamber 423 is provided in the middle part of the filter plate 42, the filter plate water outlet 422 is connected with the filter plate chamber 423, an I-shaped sealing ring 424 is provided outside the filter plate water inlet 421 and the filter plate water outlet 422, a supporting mesh plate 425 is provided in the filter plate chamber 423, and a metal filter mesh 426 is laid on one side of the supporting mesh plate.

[0028] It should be noted that a circular sealing strip 414 is provided outside the filter frame chamber 413, and an I-shaped sealing ring 424 is provided outside the filter plate water inlet groove 421 and the filter plate water outlet groove 422, which improves the sealing performance of the plate and frame filter press, effectively reduces leakage, and enhances the filtering effect; a metal filter screen 426 is laid on one side of the supporting mesh plate, and the metal filter screen 426 replaces the traditional filter cloth, which can effectively reduce the adsorption of the filter medium and impurities on the metal filter screen 426 after filtration, is easy to clean and disinfect, and reduces the damage of the filter cloth;

[0029] The filter frame water inlet groove 411 is connected to the filter frame chamber 413, and the filter plate water outlet groove 422 is connected to the filter plate chamber 423; the liquid enters the filter frame water inlet groove 411 and the filter plate water inlet groove 421 through the feed pipe 6, and the liquid flows into the filter frame chamber 413 through the through hole between the filter frame water inlet groove 411 and the filter frame chamber 413. Under the action of hydraulic pressure, the liquid passes through the metal filter screen 426 and the supporting mesh plate 425 to separate the filter medium and impurities. The filtered liquid enters the filter plate chamber 423, and enters the filter plate water outlet groove 422 through the through hole between the filter plate and the filter plate water outlet groove 422, completing a filtering work.

[0030] Specifically, a circular tube 10 for supporting the filter frame 41 and the filter plate 42 is also provided on the frame 3, arc grooves 11 are provided on both sides of the filter frame 41 and the filter plate 42, and the filter frame 41 and the filter plate 42 are slidably connected to the circular tube 10 through the arc grooves 11; pulleys 12 are provided on both sides of the rear cover plate 2, and the pulleys 12 are slidably connected to the circular tube 10.

[0031] It should be noted that the arc groove 11 matches the diameter of the circular tube 10, so that the filter frame 41 and the filter plate 42 can be firmly slidably connected to the circular tube 10, maintaining the balance and alignment of the filter frame 41 and the filter plate 42, and avoiding unstable assembly or damage due to uneven friction; pulleys 12 are provided on both sides of the rear cover 2 to facilitate the movement of the filter frame 41 and the filter plate 42.

[0032] Specifically, a roller 51 for movement is provided below the liquid receiving pan 5 , and a discharge port is provided on one side of the liquid receiving pan 5 , and is connected to a valve switch 52 through a pipeline.

[0033] It should be noted that the design of the movable roller 51 and the discharge port reduces the difficulty of operation, allowing operators to more easily perform daily management and maintenance of the equipment, making filtrate discharge more convenient and controllable, and improving the production efficiency and operational convenience of the plate and frame filter press.

[0034] Specifically, the instrument assembly 7 includes a pressure gauge and an air release valve.

[0035] It should be noted that the pressure gauge is used to monitor the pressure inside the plate and frame filter press in real time. During the filtration process, the pressure gauge can display the pressure changes in the filter chamber, helping the operator to understand the pressure state of the filtration process and ensure that the operation is carried out within a safe range; the bleed valve is used to release the gas inside the filter press to prevent excessive pressure and avoid safety hazards caused by gas accumulation in the equipment. The operator can adjust the bleed valve according to the reading of the pressure gauge to ensure the normal discharge of the gas inside the filter press and maintain stable pressure.

[0036] Specifically, the circular sealing strip 414 and the I-shaped sealing ring 424 are made of silicone rubber.

[0037] It should be noted that silicone rubber material has good elasticity and sealing properties, can effectively fill the gap between the filter frame and the filter plate, prevent the filtrate from leaking during the filtration process, and ensure the filtration effect and operational safety; silicone rubber material has excellent high temperature resistance and corrosion resistance, can maintain stable performance under high temperature and chemical environment, is not easily affected by the filtrate composition, and extends the service life of the seal.

[0038] Specifically, the supporting mesh plate 425 and the metal filter 426 are made of 316L metal.

[0039] It should be noted that 316L stainless steel has excellent strength and hardness. The support mesh plate 425 can provide a solid support structure to stably support the metal filter mesh 426 to ensure that it does not deform or shift during the filtration process. In addition, 316L stainless steel has good hygienic properties and will not release harmful substances. It meets the hygienic requirements of the food, pharmaceutical and other industries and is suitable for filtration processes with high requirements for product purity.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plate and frame filter press, comprising a front cover plate (1), a rear cover plate (2), a frame (3), a filter press assembly (4) and a liquid receiving tray (5), characterized in that: A front cover plate (1) is installed on the frame (3), one side of the front cover plate (1) is connected to a feed pipe (6), an instrument assembly (7) is provided on the feed pipe (6), a rear cover plate (2) is provided on the other side of the front cover plate (1), a filter press assembly (4) is installed between the front cover plate (1) and the rear cover plate (2), a liquid receiving pan (5) is provided below the filter press assembly (4), one side of the rear cover plate (2) is connected to a threaded drive rod (8), the threaded drive rod (8) is inserted into the frame (3), and a rotating handle (9) is provided at one end of the threaded drive rod (8); The filter press assembly (4) comprises a plurality of filter frames (41) and filter plates (42), and the plurality of filter frames (41) and filter plates (42) are alternately connected, a filter frame water inlet groove (411) is provided at the upper part of the filter frame (41), a filter frame water outlet groove (412) is provided at the lower part of the filter frame (41), a filter frame chamber (413) is provided at the middle part of the filter frame (41), the filter frame water inlet groove (411) is communicated with the filter frame chamber (413), and a circular sealing strip (414) is provided outside the filter frame chamber (413); the filter plates A filter plate water inlet groove (421) is provided at the upper part of the filter plate (42), a filter plate water outlet groove (422) is provided at the lower part of the filter plate (42), a filter plate chamber (423) is provided at the middle part of the filter plate (42), the filter plate water outlet groove (422) is communicated with the filter plate chamber (423), an I-shaped sealing ring (424) is provided outside the filter plate water inlet groove (421) and the filter plate water outlet groove (422), a supporting mesh plate (425) is provided inside the filter plate chamber (423), and a metal filter mesh (426) is laid on one side of the supporting mesh plate.

2. A plate and frame filter press according to claim 1, characterized in that: The frame (3) is also provided with a circular tube (10) for supporting a filter frame (41) and a filter plate (42); arc-shaped grooves (11) are provided on both sides of the filter frame (41) and the filter plate (42); and the filter frame (41) and the filter plate (42) are slidably connected to the circular tube (10) via the arc-shaped grooves (11).

3. A plate and frame filter press according to claim 2, characterized in that: Pulleys (12) are provided on both sides of the rear cover plate (2), and the pulleys (12) are slidably connected to the round tube (10).

4. A plate and frame filter press according to claim 1, characterized in that: A roller (51) for movement is provided below the liquid receiving tray (5), and a discharge port is provided on one side of the liquid receiving tray (5), and is connected to a valve switch (52) via a pipeline.

5. The plate and frame filter press according to claim 1, characterized in that: The instrument assembly (7) comprises a pressure gauge and an air release valve.

6. A plate and frame filter press according to claim 1, characterized in that: The circular sealing strip (414) and the I-shaped sealing ring (424) are made of silicone rubber.

7. A plate and frame filter press according to claim 1, characterized in that: The supporting mesh plate (425) and the metal filter (426) are made of 316L metal.

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