Filter press assembly and plate and frame filter press and fully automatic plate and frame filter press

Abstract

A filter press assembly and a plate-frame filter press and a fully automatic plate-frame filter press, wherein the filter press assembly includes a head plate, a tail plate, a plurality of filter frames and an intermediate guide plate, the filter frame is provided with a chamber and a feed flow channel, the feed flow channel is provided with a feed channel connected to the chamber, the head plate, the tail plate and the intermediate guide plate are provided with a guide surface consistent with the circumference of the chamber and a clear liquid pipeline, the clear liquid pipeline is connected to the guide surface through a clear liquid collecting hole, the feed channel and the clear liquid collecting hole are both conical pipelines, the inner side walls of the chamber and the guide surface are all smooth arc-shaped connecting surfaces, and the chamber is also provided with a mountain-shaped ridge on the inner side surface located at the bottom of the filter frame. The filter press assembly provided by the utility model has a smooth inner surface, solids are not easy to accumulate, and it is easy to rinse, which can meet the requirements of automatic online cleaning, and therefore, can meet the production needs of products with strict requirements on impurity content or no cross-mixing between batches; the plate-frame filter press and the fully automatic plate-frame filter press constructed on this basis can meet the stringent requirements of cleaning and hygiene.

Description

Technical Field

[0001] The utility model relates to a filter press assembly and a plate-frame filter press and a fully automatic plate-frame filter press, and belongs to the technical field of production and manufacturing of a plate-frame filter press assembly and a corresponding plate-frame filter press and a fully automatic plate-frame filter press. Background Art

[0002] Plate and frame filter press, also known as filter press, is a device used for solid-liquid separation of solid-liquid mixtures. Through the filter press, filter cakes formed by the solids in the solid-liquid mixture and filtrate composed of the liquid and filtrate in the solid-liquid mixture can be obtained.

[0003] The plate and frame filter press usually includes a frame, a clamping mechanism and a filter press assembly. The frame is a bed-type component composed of two load-bearing support rods and a front fixed end plate and a rear fixed end plate connected in series. The clamping mechanism consists of a cylinder and a movable clamping plate, wherein the cylinder is arranged on the tail plate, the movable clamping plate is arranged on one side of the tail plate and connected to the top rod of the cylinder, and the filter press assembly is arranged between the front fixed end plate and the movable clamping plate and can be tightly fitted with the front fixed end plate by the push of the movable clamping plate under the action of the cylinder. For the convenience of installation, the components that usually constitute the filter press assembly are also symmetrically provided with handles on the left and right sides of their respective exteriors for sliding them on the load-bearing support rods.

[0004] The main component of the filter press or the core component that plays the role of solid-liquid separation is the filter press assembly, which mainly includes a head plate, a tail plate, a plurality of filter frames arranged between the head plate and the tail plate, and an intermediate guide plate arranged between the filter frames; a hollow chamber for accumulating filter cakes is provided in the middle of the filter frame, and filter media for solid-liquid separation of solid-liquid mixtures, such as filter felt, filter cloth or filter paper, are provided on both sides. The filter medium and the hollow chamber constitute a filter chamber, and feed channels for injecting solid-liquid mixtures are provided at the upper and lower ends of one side, and a feed channel connecting the chamber is provided inside the feed channel, and channels for filtrate are provided at the upper and lower ends of the other side of the filter frame. The clear liquid flow channel flows through; the head plate, the tail plate and the middle guide plate are respectively provided with guide surfaces consistent with the circumference of the chamber on one side or both sides facing the filter frame, and the outer periphery of the guide surface is also provided with a sealing groove and a sealing ring embedded therein to prevent the solid-liquid mixture or filtrate from seeping out from the plate gaps during the filter pressing process; the head plate, the tail plate and the middle guide plate are respectively provided with guide surfaces consistent with the circumference of the chamber on one side or both sides facing the filter frame, and feed pipes corresponding to the feed flow channel are provided at the upper and lower ends of each one side, and clear liquid pipes corresponding to the clear liquid flow channel are provided at the upper and lower ends of each other side, and the clear liquid pipes are connected with the guide surface through the clear liquid collecting holes therein.

[0005] A solid-liquid mixture feed port and a filtrate outlet are provided at one end of the front fixed end plate of the filter press. The pressurized solid-liquid mixture enters the filter press assembly from the feed port and penetrates into the filter media on the front and rear sides of each filter frame under pressure to complete the filtration operation. Materials and liquids in the solid-liquid mixture with a particle size smaller than the pore size of the filter medium seep out from the filter medium into the guide surface, and then enter the clear liquid pipeline along the clear liquid collection hole on the middle guide plate, and finally gather at the filtrate outlet to flow out as filtrate. Solid materials with a particle size larger than the pore size of the filter medium are retained in the chamber of the filter frame and accumulated to become filter cakes.

[0006] When the filtration is finished, the oil cylinder retracts, the mobile pressing plate releases the pressure, the filter press assembly is disassembled, and the filter cake can be taken out from the filter frame; then the various components and filter media in the filter press assembly are rinsed clean, or new filter media are replaced, and the components of the filter press assembly are reassembled into a new filter press assembly. Then, under the action of the oil cylinder, the filter press frame is re-tightened by the mobile pressing plate, and a new round of filtration operation can be carried out.

[0007] With the advancement of technology, technicians in this field can build a fully automatic plate-frame filter press by adding an operating frame and setting a program-controlled manipulator operating system and an online automatic cleaning system on the operating frame. Then, the manipulator operating system and the online automatic cleaning system are associated with the clamping mechanism of the plate-frame filter press and its filter pressing assembly, thereby realizing programmed automatic control and automatic operation of the plate-frame filter press's feeding, filtration, cake unloading, flushing and other operating links. The whole process does not require human intervention (participation). At present, fully automatic plate-frame filter presses have been widely used in environmental protection, water treatment, mineral processing and chemical production, and have also been used in the production of beverages, beer and other food products.

[0008] However, in the prior art, due to Figure 1 Schematic diagram of the three-dimensional structure of the filter frame in the prior art, Figure 2 As shown in the schematic diagram of the three-dimensional structure of the middle guide plate in the prior art, the inner wall of the chamber on the filter frame, and the inner wall of the guide surface of the head plate, the tail plate and the middle guide plate are all angular connecting surfaces (in the prior art, the guide surface of the head plate and the tail plate has the same Figure 2 The filter chamber pool shown has the same structure), and the feed channel and the clear liquid collection hole are both straight tube channels, which causes solids to accumulate at the edges and corners, making it difficult to rinse and unable to meet the requirements of automated online cleaning. Therefore, such equipment cannot meet the production needs of products with high hygiene requirements, nor can it meet the production needs of products with strict requirements on impurity content or that cross-mixing between batches cannot occur. For example, it cannot meet the safety requirements for its equipment in the production process of pharmaceutical products. Utility Model Content

[0009] In order to overcome the deficiencies of the prior art, expand the application field, and ensure the quality and safety of products, the utility model specially provides a filter press assembly and a plate and frame filter press and a fully automatic plate and frame filter press to conform to and meet the needs of the market.

[0010] To this end, the utility model first provides a filter press assembly, which specifically includes the following technical solutions:

[0011] A filter press assembly, used for solid-liquid separation of a solid-liquid mixture to obtain a filter cake formed by its solid matter and a filtrate composed of its liquid and filtrate in the solid-liquid mixture, comprising a head plate, a tail plate, a plurality of filter frames arranged between the head plate and the tail plate, and an intermediate guide plate arranged between the filter frames, wherein the center of the filter frame is provided with a chamber for accumulating the filter cake, and filter media are also arranged on both sides of the filter frame, and feed channels for injecting the solid-liquid mixture are provided at the upper and lower ends of one side of the chamber, and feed channels for injecting the filtrate are provided at the upper and lower ends of the other side. The clear liquid flow channel flows through, and the inside of the feed flow channel is also provided with a feed channel connected to the chamber, and the head plate, the tail plate and the middle guide plate are respectively provided with a guide surface consistent with the circumference of the chamber on one side or both sides facing the filter frame, and the upper and lower ends of one side of the guide surface are provided with a feed pipeline corresponding to the feed flow channel, and the upper and lower ends of the other side are provided with a clear liquid pipeline corresponding to the clear liquid flow channel, the outer periphery of the guide surface is provided with a sealing groove and a sealing ring embedded therein, and the clear liquid pipeline is connected with the guide surface through the clear liquid collection hole therein, wherein:

[0012] The feed channel and the clear liquid collection hole are both tapered pipes, the thick end of the tapered pipe is located on one side of the chamber or the guide surface, and the thin end of the tapered pipe is located on one side of the feed channel or the clear liquid pipe;

[0013] The inner side walls constituting the chamber and the guide surface are respectively smooth arc-shaped connecting surfaces, and a mountain-shaped ridge is also arranged on the inner side surface of the chamber located at the bottom of the filter frame.

[0014] Furthermore, in the above filter press assembly, the tapered pipe has a taper of 2 to 5°, and the connection between the tapered pipe and the chamber or the guide surface and the feed channel or the clear liquid pipe are all arc connections.

[0015] Furthermore, in the above filter press assembly, the inner wall of the chamber and the surface of the mountain-shaped ridge have a surface roughness of R a ≤0.8μm;

[0016] Furthermore, in the above filter press assembly, the filter frame has at least one feed channel, and when the feed channel exceeds one, the feed channels are radially connected to the chamber with the feed flow channel as the origin.

[0017] Furthermore, in the above filter press assembly, the filter frame is provided with an exhaust hole at a position corresponding to the top of the sealing ring of the head plate, the tail plate or the middle guide plate.

[0018] Optionally, in the above-mentioned filter press assembly, the filter frame is made of polypropylene or stainless steel, wherein the filter frame made of polypropylene has a plate thickness of not less than 15 mm, and the filter frame made of stainless steel has a plate thickness of not less than 5 mm.

[0019] Furthermore, the Chinese grade of the stainless steel material is 316L; and the polypropylene material should meet the quality requirements specified by FDA.

[0020] Furthermore, the utility model also provides a plate-frame filter press, which specifically includes the following technical solutions:

[0021] A plate-and-frame filter press is used for solid-liquid separation of a solid-liquid mixture, comprising a bed-type frame composed of a front fixed end plate and a rear fixed end plate respectively connected end to end with two load-bearing support rods, a clamping mechanism composed of an oil cylinder and a movable clamping plate, and further comprising:

[0022] The filter press assembly described in any of the above items, wherein the oil cylinder is arranged on the rear fixed end plate, the movable clamping plate is arranged on one side of the rear fixed end plate and is connected to the top rod of the oil cylinder, the filter press assembly is placed between the front fixed end plate and the movable clamping plate and can be tightly fitted with the front fixed end plate through the pushing of the movable clamping plate under the action of the oil cylinder, and the head plate, tail plate, filter frame and intermediate guide plate that constitute the filter press assembly are also symmetrically provided with handles on the left and right sides of their respective exteriors for them to be slidably placed on the load-bearing support rods of the frame.

[0023] Furthermore, the plate-and-frame filter press further comprises a partition plate having the same shape and size as the tail plate;

[0024] At least one partition plate is arranged on the load-bearing support rod between the movable clamping plate and the tail plate, and is used to fill the gap between the movable clamping plate and the tail plate of the clamped filter press assembly after the top rod of the oil cylinder is fully ejected.

[0025] Furthermore, the utility model also provides a fully automatic plate-frame filter press, which specifically includes the following technical solutions:

[0026] A fully automatic plate-frame filter press, used for solid-liquid separation of a solid-liquid mixture, comprises a manipulator operating system and an online automatic cleaning system which are arranged on an operating frame and controlled by a program, and the solid-liquid separation of the solid-liquid mixture is completed by the plate-frame filter press;

[0027] The plate and frame filter press is placed inside the operating frame. The manipulator operating system and the online automatic cleaning system arranged on the operating frame are respectively associated with the clamping mechanism and the filter press assembly of the plate and frame filter press, and the clamping mechanism and the filter press assembly are combined or decomposed and cleaned online. The injection of the solid-liquid mixture, solid-liquid separation, and recovery of the filter cake and filtrate are carried out on the plate and frame filter press.

[0028] Compared with the prior art, the outstanding beneficial effects and significant improvements of the utility model are:

[0029] The filter press assembly, the plate-frame filter press, and the fully automatic plate-frame filter press provided by the utility model include:

[0030] The filter press assembly comprises a head plate, a tail plate, a plurality of filter frames arranged between the head plate and the tail plate, and an intermediate guide plate arranged between the filter frames. A chamber is arranged in the middle of the filter frame, and feed channels are arranged at the upper and lower ends of one side of the chamber, and a feed channel connected to the chamber is also arranged inside the feed channel. The head plate, the tail plate and the intermediate guide plate are respectively provided with guide surfaces consistent with the circumference of the chamber on one side or both sides facing the filter frame, and clear liquid pipelines corresponding to the clear liquid channel are arranged at the upper and lower ends of one side of the guide surface. The clear liquid pipeline is connected with the guide surface through the clear liquid collecting hole therein, and the feed channel and the clear liquid collecting hole are both conical pipelines, the thick end of the conical pipeline is located on one side of the chamber or the guide surface, and the thin end of the conical pipeline is located on one side of the feed channel or the clear liquid pipeline, the inner side walls constituting the chamber and the guide surface are respectively smooth arc-shaped connecting surfaces, and the inner side surface of the chamber located at the bottom of the filter frame is also provided with a mountain-shaped ridge.

[0031] Obviously, the filter press component formed by such a design has a smooth internal surface, solid materials are not easy to accumulate, and it is easy to rinse, and can also meet the requirements of automatic online cleaning. Therefore, it can meet the production needs of products with strict requirements on impurity content or no cross-mixing between batches, that is, it can not only meet the solid-liquid separation needs of general products, but also meet the cleanliness and safety requirements of the equipment in the production process of its products in the pharmaceutical field, overcome the shortcomings of the existing technology, expand its application field, and ensure the quality and safety of the product;

[0032] On this basis, the plate and frame filter press and the fully automatic plate and frame filter press developed based on the above filter press assembly provided by the utility model can also meet the solid-liquid separation operation needs of various products including pharmaceutical products in the prior art, and meet their stringent cleaning and sanitation requirements, thereby complying with and meeting the needs of the market;

[0033] The filter press assembly and its plate and frame filter press and fully automatic plate and frame filter press provided by the utility model structurally overcome the shortcomings of the prior art, such as the difficulty in cleaning the filter press assembly, easy accumulation of solid matter, and inability to meet the requirements of automated online flushing, thereby ensuring product quality, expanding the application field, and achieving technical effects that cannot be achieved by the prior art. They have substantial characteristics and progress and are therefore extremely valuable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the present utility model, a brief introduction to the drawings required for the embodiments of the present utility model is given below.

[0035] Obviously:

[0036] The drawings described below are only drawings of some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, but these other drawings also belong to the drawings required for use in the embodiments of the utility model.

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of the filter frame in the prior art;

[0038] Figure 2 It is a schematic diagram of the three-dimensional structure of the middle guide plate in the prior art;

[0039] Figure 3 A schematic diagram of the three-dimensional exploded structure of components of a filter press assembly provided by an embodiment of the utility model;

[0040] Figure 4 A schematic diagram of the three-dimensional structure of a filter frame of a filter press assembly provided in an embodiment of the utility model;

[0041] Figure 5 The present invention provides a three-dimensional perspective structural diagram of a filter frame of a filter press assembly.

[0042] Figure 6 A schematic diagram of the three-dimensional structure of a middle guide plate of a filter press assembly provided in an embodiment of the utility model;

[0043] Figure 7 A schematic diagram of a plan perspective structure of a middle guide plate of a filter press assembly provided by an embodiment of the utility model;

[0044] Figure 8 A front perspective structural diagram of a plate-frame filter press provided in an embodiment of the utility model;

[0045] Fig. 9 A rear perspective structural diagram of a plate-frame filter press provided in an embodiment of the utility model;

[0046] Fig.10 A schematic diagram of the three-dimensional structure of a fully automatic plate and frame filter press provided in an embodiment of the utility model;

[0047] Fig.11 A side structural schematic diagram of a fully automatic plate and frame filter press provided in an embodiment of the utility model.

[0048] In the figure:

[0049] 100-filter press assembly;

[0050] 110-head plate, 120-tail plate, 130-filter frame, 131-chamber, 132-feed channel, 133-clear liquid channel, 134-feed hole, 135-ridge, 140-middle guide plate;

[0051] 101-flow guide surface, 102-feeding pipe, 103-clear liquid pipe, 104-clear liquid collecting hole, 105-sealing ring, 106-handle;

[0052] 211- load-bearing support rod, 212- front fixed end plate, 213- rear fixed end plate, 221- oil cylinder, 222- movable pressing plate, 230- partition plate;

[0053] 310-operating frame, 320-manipulator operating system, 330-online automatic cleaning system. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution, beneficial effects and significant progress of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the drawings provided for the embodiments of the utility model. Obviously, all the described embodiments are only partial embodiments of the utility model, rather than all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0055] It should be noted that the term "comprising" and any variations thereof in the specification and claims of the present utility model are intended to cover non-exclusive inclusions, for example, not only including a series of listed technical features and structural components, but also optionally including unlisted technical features and structural components, or optionally including the connection relationship between these technical features and structural components.

[0056] What needs to be understood is:

[0057] In the description of the embodiments of the present invention, terms such as "upper", "lower", "top", "bottom" and other indicative orientation or position words are only based on the orientation or position relationship shown in the drawings of the embodiments of the present invention. They are for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element must have a specific orientation, specific orientation structure and operation. Therefore, they cannot be understood as limitations on the present invention.

[0058] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a movable connection, or an integrated connection relationship. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two structural elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0059] It should also be noted that:

[0060] The following specific embodiments may be combined with each other, and the same or similar concepts or processes therein may not be described in detail in some embodiments.

[0061] The technical solution of the present utility model is described in detail below with specific embodiments.

[0062] Example 1

[0063] This embodiment provides a filter press assembly for obtaining a filter cake formed by solid-liquid separation of a solid-liquid mixture and a filtrate composed of liquid and filtrate in the solid-liquid mixture.

[0064] like Figure 3 A three-dimensional exploded structural diagram of components of a filter press assembly provided by an embodiment of the utility model is shown as follows:

[0065] A filter press assembly 100 includes a head plate 110, a tail plate 120, a plurality of filter frames 130 disposed between the head plate 110 and the tail plate 120, and an intermediate guide plate 140 disposed between the filter frames 130;

[0066] like Figure 4 A three-dimensional structural diagram of a filter frame of a filter press assembly provided in an embodiment of the utility model, Figure 5 A three-dimensional perspective structural diagram of a filter frame of a filter press assembly provided by an embodiment of the utility model is shown as follows:

[0067] The filter frame 130 has a chamber 131 for storing filter cakes in the middle thereof, and filter media (not shown in the figure) are also arranged on both sides of the filter frame 130. Feed channels 132 for injecting solid-liquid mixture are arranged at the upper and lower ends of one side of the chamber 131, and clear liquid channels 133 for filtrate to flow through are arranged at the upper and lower ends of the other side. A feed channel 134 communicating with the chamber 131 is also arranged inside the feed channel 132.

[0068] like Figure 6 A schematic diagram of the three-dimensional structure of the middle guide plate of a filter press assembly provided by an embodiment of the utility model, Figure 7 A schematic diagram of the perspective structure of the middle guide plate of a filter press assembly provided by an embodiment of the utility model is shown as follows (because the head plate and the side of the tail plate facing the filter frame have the same structure as the middle guide plate, for simplicity, the corresponding drawings are not provided in this embodiment):

[0069] The head plate 110, the tail plate 120 and the middle guide plate 140 are respectively provided with a guide surface 101 having the same circumference as the chamber 131 on one side or both sides facing the filter frame 130, and the upper and lower ends of one side of the guide surface 101 are provided with a feed pipe 102 corresponding to the feed flow channel 132, and the upper and lower ends of the other side are provided with a clear liquid pipe 103 corresponding to the clear liquid flow channel 133, and the clear liquid pipe 103 is communicated with the guide surface 101 through the clear liquid collection hole 104 therein, and the outer periphery of the guide surface 101 is provided with a sealing groove and a sealing ring 105 is embedded;

[0070] From the above attached Figures 3 to 7 It can be seen that:

[0071] The filter press assembly provided in this embodiment has a feed channel 134 and a clear liquid collection hole 104 that are both tapered pipes, the thick end of the tapered pipe is located on one side of the chamber 131 or the guide surface 101, and the thin end of the tapered pipe is located on one side of the feed channel 132 or the clear liquid pipe 103;

[0072] The inner side walls constituting the chamber 131 and the guide surface 101 are respectively smooth arc-shaped connecting surfaces, and a mountain-shaped ridge 135 is also provided on the inner side surface of the chamber 131 located at the bottom of the filter frame 130 .

[0073] It can be seen that:

[0074] The filter press component designed in this way has a smooth internal surface, solid materials are not easy to accumulate, it is easy to flush, and can meet the requirements of automatic online cleaning. Therefore, it can meet the production needs of products with strict requirements on impurity content or no cross-mixing between batches. That is, it can not only meet the solid-liquid separation needs of general products, but also meet the cleanliness and safety requirements of equipment in the production process of its products in the pharmaceutical field. It overcomes the shortcomings of the existing technology, expands its application field, can ensure the quality and safety of products, has substantial characteristics and progress, and therefore, has great promotion and application value.

[0075] Further, as an optimized design, the filter press assembly provided in this embodiment has:

[0076] The taper of the tapered pipe is 2 to 5 degrees, and the connection between the tapered pipe and the chamber or the guide surface and the feed flow channel or the clear liquid pipe is an arc connection;

[0077] The inner wall of the chamber 131 and the surface of the mountain-shaped ridge 135 each have a surface roughness of R a ≤0.8μm.

[0078] It can be seen that:

[0079] The feed channel and the clear liquid collection hole are designed as conical pipes, and the taper is further determined to be 2 to 5 degrees, and the connection with the chamber or the guide surface and the feed channel or the clear liquid pipe is required to be an arc connection. Not only from the processing technology, but also from the structural design, it is guaranteed that the filtrate of the filter press assembly can flow out completely and will not remain in the internal pipe of the filter press assembly, and the solid material is not easy to accumulate and is easy to flush, so as to better ensure the quality and safety of the product, and meet the filtration needs of products with strict requirements on product hygiene and batch, including those in the pharmaceutical field.

[0080] Furthermore, as an optimized design, the filter frame 130 can be designed with multiple feed channels 134 according to its size and thickness. When there is more than one feed channel 134, the feed channel 134 is radially connected to the chamber 131 with the feed channel 132 as the origin. In this way, the needs of rapid feeding of filter frames of different specifications and sizes can be met, and the needs of feed channel layout and cleaning can be met.

[0081] Furthermore, the filter frame 130 may be provided with an exhaust hole (not shown in the figure) at the top of the sealing ring 105 corresponding to the head plate 110, the tail plate 120 or the middle guide plate 140. In this way, when the filter press assembly is cleaned online, it can be ensured that the washing liquid or disinfecting liquid such as NaOH can completely enter various parts of the filter frame to achieve complete immersion of the filter frame, thereby avoiding the formation of an air control area above the inside of the filter frame, which makes it impossible for the washing liquid or disinfecting liquid to reach and reduces the cleaning or disinfection effect.

[0082] As an optional implementation, the filter press assembly provided in this embodiment, its filter frame 130 can be made of polypropylene or stainless steel material, wherein the filter frame 130 made of polypropylene material has a plate thickness of not less than 15 mm, and the filter frame 130 made of stainless steel material has a plate thickness of not less than 5 mm, so as to meet the strength requirements of the filter frame when working.

[0083] As an optional implementation, when the filter frame is made of stainless steel, the Chinese grade of the stainless steel should be 316L, because this kind of stainless steel has a chromium content of 16% to 18%, a nickel content of 10% to 14%, and a molybdenum content of 2% to 3%. It has excellent corrosion resistance and high temperature resistance, and its tensile strength can reach more than 480Mpa, and it has good work hardening properties, which can meet the requirements of this embodiment for product cleanliness and online automatic cleaning.

[0084] As an optional implementation, when the filter frame is made of polypropylene material, the polypropylene material should comply with the relevant requirements of the FDA, that is, it must generally meet the following testing standards:

[0085] 1) US FDA21 CFR 177.1520- Extract content test standard;

[0086] 2) US FDA21 CFR 177.1520-Test standard for soluble matter content in xylene;

[0087] 3) US FDA21 CFR 177.1520-density (23°C) test standard;

[0088] 4) US FDA21 CFR 177.1520- Melting point test standard.

[0089] Example 2

[0090] This embodiment provides a plate and frame filter press prepared based on any one of the filter press components in the above-mentioned embodiment 1.

[0091] like Figure 8 A front view stereoscopic structural diagram of a plate and frame filter press provided by an embodiment of the utility model, Fig. 9 A rear view stereoscopic structure diagram of a plate and frame filter press provided by an embodiment of the utility model is shown as follows:

[0092] A plate-and-frame filter press is used for solid-liquid separation of a solid-liquid mixture, comprising a bed-type frame composed of a front fixed end plate 212 and a rear fixed end plate 213 respectively connected end to end with two load-bearing support rods 211, a clamping mechanism composed of an oil cylinder 221 and a movable clamping plate 222, and further comprising:

[0093] Any one of the filter press assemblies 100 provided in the above-mentioned embodiment 1, wherein the oil cylinder 221 is arranged on the rear fixed end plate 213, the movable clamping plate 222 is arranged on one side of the rear fixed end plate 213 and is connected to the push rod of the oil cylinder 221, the filter press assembly 100 is arranged between the front fixed end plate 212 and the movable clamping plate 222 and can be tightly fitted with the front fixed end plate 212 through the push of the movable clamping plate 222 under the action of the oil cylinder 221, and the head plate 110, the tail plate 120, the filter frame 130 and the intermediate guide plate 140 that constitute the filter press assembly 100 are also symmetrically provided with handles 106 on the left and right sides of their respective exteriors for them to be slidably placed on the load-bearing support rods 211 of the frame.

[0094] It can be seen that:

[0095] Since the core component of the plate and frame filter press provided in this embodiment is the filter press assembly provided in the above-mentioned embodiment 1, which has a smooth internal surface, is not easy to accumulate solid materials, is easy to flush, and can meet the requirements of automatic online cleaning, therefore, the plate and frame filter press prepared based on the filter press assembly provided in the above-mentioned embodiment 1 can meet the production needs of products with strict requirements on impurity content or no cross-mixing between batches, that is, it can not only meet the solid-liquid separation needs of general products, but also meet the cleaning and safety requirements of equipment in the production process of its products in the pharmaceutical field, overcome the shortcomings of the existing technology, expand its application field, can ensure the quality and safety of products, and has substantial characteristics and progress. Therefore, it is of great value for promotion and application.

[0096] On this basis, the plate-frame filter press provided in this embodiment may further include a partition plate 230 having the same shape and size as the tail plate 120;

[0097] At least one partition plate 230 is disposed on the load-bearing support rod 211 between the movable clamping plate 222 and the tail plate 120 to fill the gap between the movable clamping plate 222 and the tail plate 120 of the clamped filter press assembly 100 after the top rods of the oil cylinder 221 are fully pushed out.

[0098] As a result, the operation and use of the plate and frame filter press provided in this embodiment can be more convenient and flexible, because the filter frame and the intermediate guide plate in the filter press assembly can be flexibly increased or decreased according to the amount of solid-liquid mixture and the separation requirements, and the gap between the tail plate and the movable clamping plate of the filter press assembly can be adjusted by the partition plate, thereby meeting the clamping needs of the filter press assembly and successfully completing the filter press operation.

[0099] Example 3

[0100] This embodiment provides a fully automatic plate and frame filter press constructed based on the plate and frame filter press provided in the above-mentioned embodiment 2, and a mature program-controlled manipulator operating system and an online automatic cleaning system in the prior art.

[0101] like Fig.10 A three-dimensional structural diagram of a fully automatic plate-frame filter press provided by an embodiment of the utility model, Fig.11 A side view structural diagram of a fully automatic plate and frame filter press provided by an embodiment of the utility model is shown as follows:

[0102] A fully automatic plate-frame filter press, used for solid-liquid separation of a solid-liquid mixture, comprising:

[0103] A robot operating system 320 and an online automatic cleaning system 330 are arranged on the operating frame 310 and controlled by a program, and the solid-liquid separation of the solid-liquid mixture is completed by the plate-frame filter press provided in the above-mentioned embodiment 2;

[0104] The plate and frame filter press provided in the above-mentioned embodiment 2 is placed inside the operating frame 310. The manipulator operating system 320 and the online automatic cleaning system 330 arranged on the operating frame 310 are respectively associated with the clamping mechanism of the plate and frame filter press and its filter press assembly 100, and the clamping mechanism and the filter press assembly 100 are combined or decomposed and cleaned online, and the injection of solid-liquid mixture, solid-liquid separation, and recovery of filter cake and filtrate are implemented on the plate and frame filter press.

[0105] It can be seen that:

[0106] Since the core equipment of the fully automatic plate and frame filter press provided in this embodiment is the plate and frame filter press provided in the above-mentioned embodiment 2, whose filter pressing component has a smooth internal surface, solid materials are not easy to accumulate, it is easy to rinse, and can meet the requirements of automatic online cleaning, therefore, the fully automatic plate and frame filter press constructed based on the plate and frame filter press provided in the above-mentioned embodiment 2 and configured with a mature program-controlled manipulator operating system and an online automatic cleaning system in the prior art can not only meet the production needs of products with strict requirements on impurity content or no cross-mixing between batches, that is, it can not only meet the solid-liquid separation needs of general products, but also meet the special cleaning and safety requirements for equipment in the production process of its products in the pharmaceutical field, and can also realize the automation of the filtration and cleaning process, improve production efficiency, reduce personnel interference, overcome the shortcomings of the existing technology, expand its application field, and ensure the quality and safety of the product. Therefore, it has substantial characteristics and progress and is of great promotion and application value.

[0107] In summary, it can be seen that the filter press assembly and its plate and frame filter press and fully automatic plate and frame filter press provided by the utility model structurally overcome the shortcomings of the prior art, such as the difficulty in cleaning the filter press assembly, easy accumulation of solid matter, and inability to meet the requirements of automated online flushing. It can effectively ensure the quality of the product, thereby expanding the relevant application fields, and can achieve technical effects that cannot be achieved by the prior art. It has substantial characteristics and progress, and therefore, is of great value for promotion and application.

[0108] In the description of the above manual:

[0109] The descriptions of terms such as "this embodiment", "an embodiment of the utility model", "as shown in...", "further", etc., mean that the specific features, structures, materials or characteristics described in the embodiment are included in at least one embodiment of the utility model. In this specification, the schematic expressions of the above terms are not necessarily for the same embodiment, and the specific features, structures, materials or characteristics described may be combined or combined in a suitable manner in any one or more embodiments; in addition, under the premise that no contradiction arises, a person of ordinary skill in the art may combine or combine the different embodiments and features of different embodiments described in this specification.

[0110] Finally, it should be noted that:

[0111] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions described in the embodiments of the present invention. The non-essential improvements, adjustments or replacements made by those skilled in the art based on the contents recorded in this specification are all within the scope of protection required by the present invention.

Claims

1. A filter press assembly, used for solid-liquid separation of a solid-liquid mixture to obtain a filter cake formed by the solid matter and a filtrate composed of the liquid and the filtrate in the solid-liquid mixture, comprising a head plate, a tail plate, a plurality of filter frames arranged between the head plate and the tail plate, and an intermediate guide plate arranged between the filter frames, wherein the center of the filter frame is provided with a chamber for accumulating the filter cake, and filter media are also arranged on both sides of the filter frame, and feed channels for injecting the solid-liquid mixture are provided at the upper and lower ends of one side of the chamber, and feed channels for injecting the filtrate are provided at the upper and lower ends of the other side. The clear liquid flow channel flows through, and the inside of the feed flow channel is also provided with a feed channel connected to the chamber, and the head plate, the tail plate and the middle guide plate are respectively provided with a guide surface consistent with the circumference of the chamber on one side or both sides facing the filter frame, and the upper and lower ends of one side of the guide surface are provided with a feed pipeline corresponding to the feed flow channel, and the upper and lower ends of the other side are provided with a clear liquid pipeline corresponding to the clear liquid flow channel, the outer periphery of the guide surface is provided with a sealing groove and a sealing ring embedded therein, and the clear liquid pipeline is connected with the guide surface through the clear liquid collection hole therein, characterized in that: The feed channel and the clear liquid collection hole are both tapered pipes, the thick end of the tapered pipe is located on one side of the chamber or the guide surface, and the thin end of the tapered pipe is located on one side of the feed channel or the clear liquid pipe; The inner side walls constituting the chamber and the guide surface are respectively smooth arc-shaped connecting surfaces, and a mountain-shaped ridge is also arranged on the inner side surface of the chamber located at the bottom of the filter frame.

2. The filter press assembly according to claim 1, characterized in that: The tapered pipe has a taper of 2-5°, and the connection between the tapered pipe and the chamber or the guide surface and the feed channel or the clear liquid pipe is an arc connection.

3. The filter press assembly according to claim 1, characterized in that: The surface roughness of the inner wall of the chamber and the surface of the mountain-shaped ridge is R a ≤0.8μm.

4. The filter press assembly according to claim 1, characterized in that: The filter frame has at least one feed channel, and when the feed channel exceeds one, the feed channels are radially connected to the chamber with the feed flow channel as the origin.

5. The filter press assembly according to claim 1, characterized in that: The filter frame is also provided with an exhaust hole at a position corresponding to the top of the sealing ring of the head plate, the tail plate or the middle guide plate.

6. The filter press assembly according to claim 1, characterized in that: The filter frame is made of polypropylene or stainless steel, wherein the filter frame made of polypropylene has a plate thickness of not less than 15 mm, and the filter frame made of stainless steel has a plate thickness of not less than 5 mm.

7. The filter press assembly according to claim 6, characterized in that: The Chinese grade of the stainless steel material is 316L; the polypropylene material should meet the quality requirements specified by FDA.

8. A plate-and-frame filter press for solid-liquid separation of a solid-liquid mixture, comprising a bed-type frame composed of a front fixed end plate and a rear fixed end plate connected end to end with two load-bearing support rods, and a clamping mechanism composed of an oil cylinder and a movable clamping plate, characterized in that: Also includes the filter press assembly according to any one of claims 1 to 7, wherein: The oil cylinder is arranged on the rear fixed end plate, the movable clamping plate is arranged on one side of the rear fixed end plate and is connected to the top rod of the oil cylinder, the filter press assembly is arranged between the front fixed end plate and the movable clamping plate and can be tightly fitted with the front fixed end plate through the pushing of the movable clamping plate under the action of the oil cylinder, and the head plate, tail plate, filter frame and intermediate guide plate constituting the filter press assembly are symmetrically provided with handles on the left and right sides of their respective exteriors for them to be slidably placed on the load-bearing support rods of the frame.

9. The plate and frame filter press according to claim 8, characterized in that: Also includes a partition plate having the same shape and size as the tail plate; At least one partition plate is arranged on the load-bearing support rod between the movable clamping plate and the tail plate, and is used to fill the gap between the movable clamping plate and the tail plate of the clamped filter press assembly after the top rod of the oil cylinder is fully ejected.

10. A fully automatic plate-and-frame filter press for solid-liquid separation of solid-liquid mixtures, comprising a program-controlled manipulator operating system and an online automatic cleaning system arranged on an operating frame, characterized in that: The solid-liquid separation of the solid-liquid mixture is accomplished by the plate-frame filter press described in claim 8 or 9; The plate and frame filter press is placed inside the operating frame. The manipulator operating system and the online automatic cleaning system arranged on the operating frame are respectively associated with the clamping mechanism and the filter press assembly of the plate and frame filter press, and the clamping mechanism and the filter press assembly are combined or decomposed and cleaned online. The injection of the solid-liquid mixture, solid-liquid separation, and recovery of the filter cake and filtrate are carried out on the plate and frame filter press.

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