Filter pressing device for hot filtration

Abstract

The utility model relates to the technical field of hot filtering equipment, in particular to a filter pressing device for hot filtering, which comprises a support, a filtering device is mounted on the support, a cavity is arranged on the upper end face of the filtering device, the support, the filtering device and the cavity are fixed through a first fastening bolt, a top cover is arranged on the upper end face of the cavity, and a second fastening bolt is arranged on the top cover. The cavity is fixedly connected with a top cover through a second fastening bolt, and a feeding port is formed in the upper end face of the top cover. The device is connected with an external air compressor by arranging the hose structure, the interior of the cavity is pressurized through the hose structure during feeding, the separation process is conducted under positive pressure, meanwhile, the whole device is good in leakproofness, an inlet and an outlet are sealed through valves, it is guaranteed that no leakage point exists, and therefore materials can be rapidly filtered.

Description

Technical Field

[0001] The utility model relates to the technical field of hot filtration equipment, in particular to a pressure filtration device for hot filtration. Background Technique

[0002] Hot filtration is a commonly used separation and purification technique in chemical experiments and industrial production. It is mainly used to process substances that have a significant decrease in solubility when the temperature drops and are prone to crystal precipitation. When performing hot filtration operations, temperature control is a key factor. Generally, the solution needs to be heated to a certain temperature to ensure that the target substance is fully dissolved in the solution and will not precipitate prematurely due to temperature reduction during the filtration process. The selection of this temperature is usually determined based on the solubility characteristics of the target substance and experimental requirements.

[0003] In the laboratory, the commonly used hot filtration method is the funnel (hot funnel) method, where a short-neck glass funnel is placed inside a copper hot funnel, and hot water is filled in the hot funnel to maintain the temperature of the solution. The neck of the internal glass funnel should be as short as possible to prevent the solution from staying in the funnel neck for too long during filtration, dissipating heat and cooling down, and precipitating crystals to block the device. For the steam heating method of the funnel without a neck, a funnel without a neck is placed above a water bath device and heated with steam, and then filtration is carried out.

[0004] The above methods can only be carried out when the amount of feed liquid is small because the heat preservation persistence is not easy to control, and the feed liquid is in a natural filtration state, and the separation of solid materials with finer characteristics is slow. If the temperature is too high, it may cause the solution to volatilize too fast and even cause danger; if the temperature is too low, the solute will precipitate prematurely, blocking the filter paper or filter holes and affecting the filtration effect. Moreover, since this filtration still relies on gravity, the filtration speed is relatively slow, the cost of the metal jacket is high, and an alcohol lamp is used for heating. If the solvent is a flammable and explosive solvent, there may be a safety hazard problem with open flames. Content of the Utility Model

[0005] The utility model solves the problems in the related art and provides a pressure filtration device for hot filtration.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] A pressure filtration device for hot filtration includes a bracket, a filtration device is installed on the bracket, a cavity is arranged on the upper end surface of the filtration device, the bracket, the filtration device and the cavity are fixed by a first fastening bolt, a top cover is arranged on the upper end surface of the cavity, the cavity is fixedly connected with the top cover by a second fastening bolt, a feed inlet is installed on the upper end surface of the top cover, the feed inlet is hermetically fixed to the top cover through a silica gel sealing gasket, and a first valve is installed on the feed inlet.

[0008] As a preferred solution, the filtering device includes a conical outer shell and a filter plate covered with small holes, a filter cloth or a filter membrane of required specifications is placed on the filter plate, and the filter plate is fixedly connected to the conical outer shell and the material cavity.

[0009] As a preferred solution, a discharge port is provided on the lower end surface of the conical shell, and a second valve is installed on the discharge port.

[0010] As a preferred solution, silicone sealing gaskets are provided at the upper and lower ends of the filter plate, and the silicone sealing gaskets are fixedly connected to the filter plate.

[0011] As a preferred solution, an electric heating sleeve is sleeved on the outer surface of the cavity, and the electric heating sleeve is fixedly connected to the cavity.

[0012] As a preferred solution, a sensor sleeve is provided in the cavity, the sensor sleeve is fixedly connected to the cavity, and a temperature sensor is fixedly installed in the sensor sleeve.

[0013] As a preferred solution, the upper end surface of the cavity is provided with a vent, and a hose structure connected to an external air compressor is installed on the vent.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the present application is connected to an external air compressor by setting a hose structure. After feeding, an automatic temperature control and heating device can be used to achieve constant temperature maintenance of the material at the temperature required for separation. During separation, the hose structure is used to increase the pressure inside the cavity, so that the separation process is carried out under positive pressure. At the same time, the overall equipment has good airtightness, and the inlet and outlet are sealed with valves to ensure that there are no leaks, so that the material can be filtered quickly.

[0015] The cavity is connected to the feed port by bolts to facilitate the recovery of the filter residue after separation. The cavity is connected to the filter plate by bolts to ensure the internal pressure is stable and make the force points uniform when the filter cloth (filter membrane) is fixed, thus increasing the service life of the filter membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the filter device of the utility model;

[0018] Figure 3 It is a schematic structural diagram of the top cover and the feed port of the utility model in coordination.

[0019] In the figure: 1. Support; 11. First fastening bolt; 2. Filter device; 21. Conical housing; 211. Discharge port; 212. Second valve; 22. Filter plate; 221. Silicone sealing gasket; 3. Cavity; 31. Electric heating jacket; 32. Sensor sleeve; 33. Temperature sensor; 34. Hose structure; 4. Top cover; 5. Second fastening bolt; 6. Feed port; 61. First valve. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary implementation manners according to the present application. As used herein, unless otherwise clearly specified by the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0024] For ease of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship of one device or feature to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0025] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional declaration, the above words have no special meaning. Therefore, it cannot be understood as a limitation on the protection scope of the present utility model.

[0026] Refer to Figure 1 , Figure 2 and Figure 3As shown in the figure, a pressure filter device for hot filtration includes a bracket 1. A filtration device 2 is installed on the bracket 1. A cavity 3 is provided on the upper end surface of the filtration device 2. The bracket 1, the filtration device 2, and the cavity 3 are fixed by first fastening bolts 11. Using eight groups of first fastening bolts 11 for connection can effectively achieve stable connection. The material of the cavity 3 is made of stainless steel 316L or titanium material, which can ensure the purity of the experimental solution. An electric heating jacket 31 is sleeved on the outer side surface of the cavity 3, and the electric heating jacket 31 is fixedly connected to the cavity 3. A top cover 4 is provided on the upper end surface of the cavity 3. The cavity 3 is fixedly connected to the top cover 4 by second fastening bolts 5. Connecting through the second fastening bolts 5 can not only ensure the stability of the connection but also facilitate the disassembly of the cavity 3, making it easy to take out and clean the solid phase inside the cavity 3. A feed inlet 6 is installed on the upper end surface of the top cover 4. The feed inlet 6 is hermetically and fixedly connected to the top cover 4 through a silica gel sealing gasket. A first valve 61 is installed on the feed inlet 6. By setting the bracket 1, the stable support of the filtration device 2 is ensured. The material of the equipment bracket 1 is carbon steel, and the rest are all 316L stainless steel (or titanium material). In this way, the stable filtration operation of the filtration device 2 can be ensured. At the same time, by providing a cavity 3 on the upper end surface of the filtration device 2, the raw materials for processing can be quickly heated under the action of the electric heating jacket 31. Moreover, by setting the top cover 4, the stable installation of the feed inlet 6 is ensured, facilitating the connection between the feed inlet 6 and the cavity 3. In this way, raw materials can be added to the cavity 3 through the feed inlet 6. At the same time, by setting the first valve 61, the airtight performance is ensured to be good, ensuring that there are no leakage points inside the cavity 3.

[0027] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in the figure, the filtration device 2 includes a conical outer shell 21 and a filter plate 22. The filter plate 22 is fixedly connected to the conical outer shell 21 and the cavity 3. By setting the structure of the filtration device 2, filter cloth or filter membrane of the required specifications can be placed on the filter plate 22, making it easy to achieve hot filtration during use through the filter material on the filter plate 22. A discharge port 211 is provided on the lower end surface of the conical outer shell 21. A second valve 212 is installed on the discharge port 211. By setting the discharge port 211 and the second valve 212, the filtered raw materials can be stably discharged downward for use. Silica gel sealing gaskets 221 are provided at the upper and lower ends of the filter plate 22, and the silica gel sealing gaskets 221 are fixedly connected to the filter plate 22. By setting the silica gel sealing gaskets 221, the sealing effect of the connection between the conical outer shell 21 and the filter plate 22 is ensured.

[0028] Refer to Figure 1 、 Figure 2 and Figure 3As shown, a sensor sleeve 32 is provided in the cavity 3. The sensor sleeve 32 is fixedly connected to the cavity 3, and a temperature sensor 33 is fixedly installed in the sensor sleeve 32. By installing the sensor sleeve 32 in the cavity 3 and then fixedly installing the temperature sensor 33 in the sensor sleeve 32, it can ensure that during use, the temperature inside the cavity is detected through the heat radiation of the metal surface, ensuring better control of the temperature during the heat filtration process. The sensor sleeve 32 is arranged at two-thirds of the cavity 3 to ensure that there is no contact between the filter residue layer in the heat filtration solution and the sensor sleeve 32. An air vent is provided on the upper end surface of the cavity 3, and a hose structure 34 connected to an external air compressor is installed on the air vent. Through the setting of the air vent and the installation of the hose structure 34, it can ensure a stable connection with the external air compressor, and pressurization is achieved through the external air compressor.

[0029] In this embodiment, when actually processing, the first valve is opened, and raw materials are put in from the feed port. After putting in, the first valve is closed, and then the cavity interior is pressurized through the hose structure by an external air compressor to ensure that the separation process is carried out under positive pressure, so that the material can quickly pass through the filter plate for filtration processing. During the processing, heating is carried out through the electric heating sleeve arranged outside the cavity to ensure that the liquid to be separated is filtered at a temperature point higher than the crystallization temperature. At the same time, the temperature sensor is used to ensure that the temperature of the liquid to be separated is controllable during filtration.

[0030] The above is a preferred embodiment of the present invention. Those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiment. Therefore, the present invention is not limited to the above specific embodiment, and any obvious improvements, substitutions, or variations made by those skilled in the art based on the present invention fall within the protection scope of the present invention.

Claims

1. A filter press device for hot filtration, comprising a support (1), characterized in that: A filter device (2) is mounted on the support (1); a cavity (3) is arranged on the upper end surface of the filter device (2); the support (1), the filter device (2) and the cavity (3) are fixed to each other via a first fastening bolt (11); a top cover (4) is arranged on the upper end surface of the cavity (3); the cavity (3) is fixedly connected to the top cover (4) via a second fastening bolt (5); a feed port (6) is mounted on the upper end surface of the top cover (4); the feed port (6) is sealed and fixedly connected to the top cover (4) via a silicone sealing gasket; and a first valve (61) is mounted on the feed port (6).

2. A filter press device for hot filtration according to claim 1, characterized in that: The filtering device (2) comprises a conical outer shell (21) and a filter plate (22) covered with small holes, a filter cloth or a filter membrane is placed on the filter plate (22), the filter plate (22) is installed between the conical outer shell (21) and the cavity (3), and the filter plate (22) is fixedly connected to the conical outer shell (21).

3. A filter press device for hot filtration according to claim 2, characterized in that: The lower end surface of the conical housing (21) is provided with a discharge port (211), and a second valve (212) is installed on the discharge port (211).

4. A filter press device for hot filtration according to claim 3, characterized in that: Silicone sealing gaskets (221) are provided at the upper and lower ends of the filter plate (22), and the silicone sealing gasket (221) is fixedly connected to the filter plate (22).

5. A filter press device for hot filtration according to claim 4, characterized in that: An electric heating sleeve (31) is sleeved on the outer surface of the cavity (3), and the electric heating sleeve (31) is fixedly connected to the cavity (3).

6. A filter press device for hot filtration according to claim 5, characterized in that: A sensor sleeve (32) is arranged in the cavity (3), the sensor sleeve (32) is fixedly connected to the cavity (3), and a temperature sensor (33) is fixedly installed in the sensor sleeve (32).

7. A filter press device for hot filtration according to claim 6, characterized in that: The upper end surface of the cavity (3) is provided with a vent, and a hose structure (34) connected to an external air compressor is installed on the vent.

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