High-dryness tubular ultrahigh-pressure diaphragm filter press

Abstract

The invention provides a high-dryness tubular ultrahigh-pressure diaphragm filter press, which belongs to the technical field of diaphragm filter pressing, and comprises an oil cylinder, an accessory, a shell, a diaphragm, a filter cartridge, a filter tube and a core tube, the oil cylinder is arranged at the top of the shell, the accessory comprises a sealing element, a support frame, a housing and a high-pressure pipeline, the diaphragm is arranged on the inner wall of the shell, the filter cartridge is arranged on the surface of the filter tube, and the core tube is arranged in the shell. The top of the filter tube is fixedly connected with a cylinder rod of the oil cylinder, the core tube is arranged in an inner cavity of the filter tube, the top of the core tube is fixedly connected with the top of the filter tube, a cavity between the shell and the diaphragm is a squeezing cavity, and a cavity between the filter tube and the core tube is a filtrate cavity. According to the invention, the advantages of the high-dryness tubular ultra-high-pressure diaphragm filter press in the aspects of material consumption and space occupation can be fully exerted, meanwhile, the problems of a traditional plate-and-frame filter press can be solved, ultra-high-pressure filter pressing is realized, and a product with higher dryness is obtained.

Description

Technical Field

[0001] The invention belongs to the technical field of membrane filter presses, and in particular relates to a high-dryness tubular ultra-high-pressure membrane filter press. Background Art

[0002] In industrial production, solid-liquid separation is a crucial link and is widely used in many fields such as chemical industry, mining, environmental protection, etc. As a key equipment for achieving solid-liquid separation, the performance of the filter press directly affects production efficiency, product quality, production cost and other aspects.

[0003] The main type of filter press on the market is the plate and frame filter press. According to the layout structure, it can be divided into horizontal plate and frame filter press and vertical plate and frame filter press. Their main filter pressing parts are the plate and frame, which is a rectangular frame. The material to be dehydrated is squeezed and dehydrated in the two frames. Due to the structure of the frame, the filter press cannot reach a higher pressure. Or if a higher pressure is required, the strength of the filter press needs to be very high, and the amount of steel used is very large.

[0004] Furthermore, the traditional plate-and-frame filter press has long occupied an important position in the field of solid-liquid separation, and it realizes solid-liquid separation through the extrusion of the plate and frame. However, with the continuous development of industrial technology and the increasing production demand, the traditional plate-and-frame filter press has gradually exposed a series of limitations. First, when the same pressure is reached, the steel consumption of the traditional plate-and-frame filter press is huge. In order to withstand higher pressures, the plate-and-frame filter press needs to use a large amount of steel to build a solid structure, which not only leads to high manufacturing costs, but also puts forward higher requirements on the factory building foundation, increasing the cost of factory building construction and maintenance. In contrast, the high-dryness tubular ultra-high pressure diaphragm filter press involved in the present invention consumes less than 1 / 3 of the steel of the traditional plate-and-frame filter press when the same pressure is reached. The reduction in the amount of steel used not only means a significant reduction in manufacturing costs, but also makes the adaptability of the factory building foundation stronger, and can operate stably under different factory building conditions, reducing the many inconveniences caused by the limitations of the factory building foundation. Summary of the invention

[0005] Based on the problems existing in the prior art, the present invention proposes a high-dryness tubular ultra-high pressure diaphragm filter press, which not only fully utilizes the advantages of the high-dryness tubular ultra-high pressure diaphragm filter press in terms of material consumption and space occupancy, but also solves the problems existing in traditional plate and frame filter presses, realizes ultra-high pressure filtration, and obtains products with higher dryness.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a high-dryness tubular ultra-high-pressure diaphragm filter press, comprising an oil cylinder, accessories, a shell, a diaphragm, a filter cartridge, a filter tube and a core tube, the oil cylinder is arranged at the top of the shell, the accessories include a seal, a support frame, a cover shell and a high-pressure pipeline, the diaphragm is arranged on the inner wall of the shell, the filter cartridge is arranged on the surface of the filter tube, the top of the filter tube is fixedly connected to the cylinder rod of the oil cylinder, the core tube is arranged in the inner cavity of the filter tube, and the top of the core tube is fixedly connected to the top of the filter tube.

[0007] Preferably, the cavity between the shell and the diaphragm is a pressing cavity, the cavity between the filter tube and the core tube is a filtrate cavity, the cavity between the diaphragm and the filter cartridge is a material cavity, the cavity between the shell and the diaphragm is a pressing cavity, the cavity between the filter tube and the core tube is a filtrate cavity, and the cavity between the diaphragm and the filter cartridge is a material cavity. The shell is a high-strength tube used to withstand the maximum squeezing force, and the maximum withstand pressure is up to 13MPa. The diaphragm is one of a rubber product and a polyurethane product. The filter cartridge is a cylindrical member composed of filter cloth.

[0008] Furthermore, the high-dryness tubular ultra-high pressure diaphragm filter press includes a sensor module, which includes a weighing sensor, a linear displacement sensor and a pressure sensor, wherein the weighing sensor is used to weigh the weight of the equipment to determine whether the material is fully filled, and the weighing sensor is installed on the housing. The linear displacement sensor is used to measure the extension length of the oil cylinder to determine the unloading state; it is installed inside the oil cylinder. The pressure sensor is used to measure the pressing pressure and is installed on the utility system.

[0009] Furthermore, the control system controls the flow of materials. The flow of materials includes: 1) controlling the opening of pump valves for feeding slurry; 2) controlling the action of hydraulic stations for the extension and retraction of oil cylinders, and then unloading; 3) controlling the action of pump valves, and then letting in water to flush the equipment; 4) controlling the opening and closing of gas valves for the entry of gas, assisting the unloading of equipment, or using air to discharge the squeezed liquid in the equipment.

[0010] Compared with the prior art, the advantages and positive effects of the high-dryness tubular ultra-high pressure diaphragm filter press of the present invention are:

[0011] 1. The high-dryness tubular ultra-high pressure diaphragm filter press of the present invention is a cylindrical high-pressure filter, and the pressure resistance of the cylindrical structure is the highest;

[0012] 2. The maximum material squeezing pressure can reach 13MPa;

[0013] 3. The effect of high pressure can achieve a higher degree of separation between solid and liquid phases;

[0014] 4. Theoretical research shows that the finer the particles, the higher the energy of solid-liquid separation. This membrane filter press can be used for dehydration of ultra-fine compressible materials.

[0015] 5. The water content of the filter cake is much lower than that of the traditional filter press, and the recovery rate of the filtrate is high;

[0016] 6. The filter cake is a solid block with a dry surface, and does not need to be cut or crushed.

[0017] 7. Each filter press is a module. In actual projects, filter press modules can be made according to the required processing capacity, floor space, basic load and other factors. A filter press module is a system that combines multiple filter presses into one system, using a set of public engineering to supply multiple filter presses to achieve a larger processing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic structural diagram of a high-dryness tubular ultra-high pressure diaphragm filter press according to the present invention.

[0019] Explanation of the reference numerals in the accompanying drawings: 1. oil cylinder; 2. accessories; 3. housing; 4. diaphragm; 5. filter cartridge; 6. filter tube; 7. core tube. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] In the relevant technologies, solid-liquid separation is a key link in many fields such as chemical industry, mining, and environmental protection. As an important equipment for achieving solid-liquid separation, the performance of the filter press directly affects production efficiency, product quality, and production cost. The traditional plate and frame filter press once occupied an important position in the field of solid-liquid separation. It achieves separation through the extrusion of the plate and frame. However, with the development of industrial technology and the increase in production needs, traditional plate and frame filter presses have gradually revealed a series of limitations. First of all, in order to withstand higher pressures, traditional plate and frame filter presses need to use a large amount of steel to build a solid structure, resulting in high manufacturing costs, and puts higher requirements on the foundation of the plant, increasing construction and maintenance costs.

[0023] In order to solve the above problems, the applicant has designed and developed a new type of filter press equipment: a high-dryness tubular ultra-high pressure diaphragm filter press. Compared with the plate and frame filter press, the steel consumption of the filter press is less than 1 / 3 when the same pressure is reached (in theory, the greater the pressure, the lower the water content of the product). The reduction in the amount of steel used means a reduction in manufacturing costs and greater adaptability of the plant foundation; at the same time, due to the different structures, under the same processing capacity, the floor space is much smaller than that of the plate and frame filter press, possibly less than 1 / 2. In comparison, the steel consumption of the high-dryness tubular ultra-high pressure diaphragm filter press of the present invention at the same pressure is less than one-third of that of the traditional plate and frame filter press. The reduction in steel not only significantly reduces the manufacturing cost, but also enhances the adaptability of the equipment under different plant conditions and reduces the inconvenience caused by foundation restrictions.

[0024] Secondly, the traditional plate and frame filter press occupies a large area, and its structural design requires a large space to arrange the plate frame and related components, which is a serious constraint for enterprises with limited space. However, due to its unique structural design, the high-dryness tubular ultra-high pressure diaphragm filter press occupies only half of the plate and frame filter press or even less. The smaller footprint allows enterprises to be more flexible in site planning and equipment layout, effectively improving site utilization and reducing operating costs.

[0025] In view of the above technical problems, the present invention adopts the following technical scheme: a high-dryness tubular ultra-high pressure diaphragm filter press comprises an oil cylinder 1, an accessory 2, a shell 3, a diaphragm 4, a filter cartridge 5, a filter tube 6 and a core tube 7, the oil cylinder 1 is arranged at the top of the shell 3, the accessory 2 comprises a seal, a support frame, a cover and a high-pressure pipeline, the diaphragm 4 is arranged on the inner wall of the shell 3, the filter cartridge 5 is arranged on the surface of the filter tube 6, the top of the filter tube 6 is fixedly connected to the cylinder rod of the oil cylinder 1, the core tube 7 is arranged in the inner cavity of the filter tube 6, the top of the core tube 7 is fixedly connected to the top of the filter tube 6, the cavity between the shell 3 and the diaphragm 4 is a pressing cavity, the cavity between the filter tube 6 and the core tube 7 is a filtrate cavity, and the cavity between the diaphragm 4 and the filter cartridge 5 is a material cavity.

[0026] With the above technical solution, the oil cylinder 1 is used to control the unloading of the filter cake, and the oil cylinder 1 is unloaded when it is extended. When not unloading, the oil cylinder 1 is in a recovery state. The accessories 2 include various seals, support frames, covers, high-pressure pipes, etc., which are mainly accessories 2 for realizing functions, actions and safety. The shell 3 is a high-strength pipe used to withstand the maximum squeezing force, and the maximum bearing pressure is up to 13MPa. The diaphragm 4 is an important core component of the equipment. The diaphragm 4 is generally a rubber product or a polyurethane product. The material is squeezed through the deformation of the diaphragm 4 to achieve dehydration of the material. The filter cartridge 5 is actually a cylindrical part composed of filter cloth, which can discharge the liquid through the pores on the filter cartridge 5 while the solid cannot pass through to achieve solid-liquid separation. According to different material requirements, the filter cartridge 5 selects different materials, different numbers of layers, different porosities, etc. The filter tube 6 is a metal structure with water channels on the surface. The water discharged through the filter cartridge 5 needs to enter the filtrate cavity after passing through the filter tube 6. The filter tube 6 mainly plays a supporting role so that the filter cartridge 5 does not need to be deformed under the pressure of the diaphragm 4. The core tube 7 is a process part of the equipment. In order to increase the strength of the equipment and reduce the volume of the cavity, it is convenient for rapid gas replenishment to reduce the process time.

[0027] Furthermore, the sensor module includes a weighing sensor, a linear displacement sensor and a pressure sensor, wherein the weighing sensor is used to weigh the weight of the equipment to determine whether the material is fully filled, and the weighing sensor is installed on the housing. The linear displacement sensor is used to measure the extension length of the oil cylinder to determine the unloading state. It is installed inside the oil cylinder. The pressure sensor is used to measure the squeezing pressure and is installed on the public (shared) engineering system; it is not installed on the equipment body. The control system mainly controls the flow of materials, including: 1) controlling the opening of the pump valve for feeding slurry; 2) controlling the action of the hydraulic station for the extension and contraction of the oil cylinder, and then controlling the unloading. 3) controlling the action of the pump valve, and then letting in water to flush the equipment; 4) controlling the opening and closing of the gas valve for entering gas, assisting the unloading of the equipment, or using air to discharge the squeezing liquid in the equipment. The control system adopts a PLC control system.

[0028] The working principle of high-dryness tubular ultra-high pressure diaphragm filter press is as follows:

[0029] 1. The material enters the material cavity;

[0030] 2. The squeezed liquid enters the squeeze chamber, the squeezed diaphragm 4 is deformed, and the diaphragm 4 presses the material onto the filter cartridge 5. The squeezed material passes through the filter cartridge and filter tube and enters the filtrate chamber. Then it is discharged; in order to ensure the squeezing effect, it can be squeezed repeatedly and at different pressures, which is specifically realized by the control system.

[0031] 3. The oil cylinder moves, the filter cartridge, filter tube and core tube move downward to complete the mud cake unloading. In order to unload cleanly, the oil cylinder can be controlled to reciprocate. While unloading, compressed air can be added to the filtrate chamber to assist unloading. After unloading is completed, the oil cylinder resets.

[0032] 4. Enter the next loop.

[0033] 5. If the equipment needs to be flushed, simply allow flushing water to enter the material chamber.

[0034] In this patented high-dryness tubular ultra-high pressure diaphragm filter press, the oil cylinder is used to control the unloading of the filter cake, and the oil cylinder is unloading when it is extended. When it is not unloading, the oil cylinder is in a recovery state.

[0035] 2. Accessories include various seals, supports, covers, high-pressure pipes, etc., which are mainly accessories for achieving functions, actions and safety, and will not be described in detail here;

[0036] 3. Shell The shell is a high-strength tube used to withstand the maximum compression force, with a maximum allowable pressure of up to 13MPa;

[0037] 4. The diaphragm is an important core part of the equipment. The diaphragm is generally a rubber product or a polyurethane product. The material is squeezed through the deformation of the diaphragm to achieve dehydration of the material.

[0038] The filter cartridge is a cylindrical piece composed of filter cloth, which can discharge liquid through the pores on the filter cartridge 5 while preventing solid from passing through to achieve solid-liquid separation. According to different material requirements, the filter cartridge can be selected from different materials, different layers, different porosity, etc.

[0039] The filter tube is a metal structure with water channels on its surface. The water discharged from the filter cartridge 5 needs to enter the filtrate cavity after passing through the filter tube 6. The filter tube mainly plays a supporting role so that the filter cartridge 5 does not deform under the pressure of the diaphragm;

[0040] The core tube is a process part of the equipment. In order to increase the strength of the equipment and reduce the volume of the cavity, it is convenient for rapid gas replenishment to reduce the process time.

[0041] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the technical concepts disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed by the present invention. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present invention are indicated by the following scope of rights.

[0042] It should be understood that the present invention is not limited to the precise structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the scope of the appended claims.

Claims

1. A high-dryness tubular ultra-high pressure diaphragm filter press, comprising an oil cylinder (1), an accessory (2), a housing (3), a diaphragm (4), a filter cartridge (5), a filter tube (6) and a core tube (7), characterized in that: The oil cylinder (1) is arranged on the top of the shell (3), the accessory (2) includes a seal, a support frame, a cover and a high-pressure pipeline, the diaphragm (4) is arranged on the inner wall of the shell (3), the filter cartridge (5) is arranged on the surface of the filter tube (6), the top of the filter tube (6) is fixedly connected to the cylinder rod of the oil cylinder (1), the core tube (7) is arranged in the inner cavity of the filter tube (6), and the top of the core tube (7) is fixedly connected to the top of the filter tube (6).

2. The high-dryness tubular ultra-high pressure diaphragm filter press according to claim 1, characterized in that: The cavity between the shell (3) and the diaphragm (4) is a pressing cavity, the cavity between the filter tube (6) and the core tube (7) is a filtrate cavity, and the cavity between the diaphragm (4) and the filter cartridge (5) is a material cavity.

3. The high-dryness tubular ultra-high pressure diaphragm filter press according to claim 1, characterized in that: The shell (3) is a high-strength pipe used to withstand the maximum squeezing force, and the maximum bearing pressure is as high as 13 MPa.

4. The high-dryness tubular ultra-high pressure diaphragm filter press according to claim 1, characterized in that: The diaphragm (4) is one of a rubber product and a polyurethane product.

5. The high-dryness tubular ultra-high pressure diaphragm filter press according to claim 1, characterized in that: The filter cartridge (5) is a cylindrical member composed of filter cloth.

6. The high-dryness tubular ultra-high pressure diaphragm filter press according to claim 1, characterized in that: The high-dryness tubular ultra-high pressure diaphragm filter press includes a sensor module, which includes a weighing sensor, a linear displacement sensor and a pressure sensor. The weighing sensor is used to weigh the weight of the equipment to determine whether the material is fully filled. The weighing sensor is installed on the shell.

7. The high-dryness tubular ultra-high pressure diaphragm filter press according to claim 6, characterized in that: The linear displacement sensor is used to measure the extension length of the cylinder and determine the unloading status; the linear displacement sensor is installed inside the cylinder.

8. The high-dryness tubular ultra-high pressure diaphragm filter press according to claim 6, characterized in that: Pressure sensors are used to measure the pressing pressure and are installed on the utility system.

9. The high-dryness tubular ultra-high pressure diaphragm filter press according to claim 6, characterized in that: The control system controls the flow of materials.

10. The high-dryness tubular ultra-high pressure diaphragm filter press according to claim 9, characterized in that: The flow of materials includes: 1) controlling the opening of pump valves for feeding slurry; 2) controlling the action of hydraulic station for cylinder extension and retraction to control unloading; 3) controlling the action of pump valves to allow water to enter to flush the equipment; 4) controlling the opening and closing of gas valves to allow gas to enter to assist in unloading of equipment, or to use air to discharge the squeezed liquid in the equipment.

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