Filter press capable of preserving heat and filtering

Abstract

The utility model relates to the technical field of filter presses, and particularly discloses a filter press capable of preserving heat and filtering, the filter press comprises a rack, a thrust plate, a pressing plate, a filter plate group and a jacking oil cylinder, the thrust plate and the pressing plate are oppositely arranged on the rack, the jacking oil cylinder is arranged on the rack, the pressing plate is fixedly connected to the output end of the jacking oil cylinder, and the filter plate group is fixedly connected to the output end of the jacking oil cylinder. The pushing oil cylinder is used for driving the pressing plate to be close to or far away from the thrust plate, the filter plate group is arranged on the rack and is pressed between the thrust plate and the pressing plate, the thrust plate is provided with a feeding pipe and a discharging pipe which are used for being communicated with a cavity of the filter plate group, and the feeding pipe is provided with a feeding pump; the device further comprises a steam generator and a steam pipeline, one end of the steam pipeline is connected with the steam generator, and the other end of the steam pipeline is communicated with the feeding pipe. The filtering device has the effect of improving the problems that operation is tedious and the filtering efficiency is not obviously improved in a material preheating mode.

Description

Technical Field

[0001] This application relates to the technical field of filter presses, and in particular to a filter press that can perform heat-insulated filtration. Background Art

[0002] A filter press is a mechanical device that uses a special filtering medium to apply a certain pressure to an object so that the liquid can permeate out. It is a commonly used solid-liquid separation device. It was applied to chemical production in the early 18th century and is still widely used in industries such as chemical engineering, pharmaceuticals, metallurgy, dyes, food, brewing, ceramics, and environmental protection.

[0003] When filtering some viscous materials, the filter press often has a reduced filtration speed due to the too high viscosity of the materials, which affects the filtration efficiency. And the increase in temperature will cause the viscosity of the viscous materials to decrease accordingly, thereby increasing the filtration speed. In response to this, a method of pre-heating the materials and then inputting them into the filter press chamber has been proposed on the market to improve the filtration efficiency. This method is not only cumbersome to operate, but also the temperature of the materials is difficult to maintain during the process of inputting into the filter press chamber and being filtered in the filter press chamber, resulting in an insignificant improvement in filtration efficiency. Utility Model Content

[0004] In order to improve the problem that the method of pre-heating the materials is not only cumbersome to operate but also the improvement of filtration efficiency is not obvious, this application provides a filter press that can perform heat-insulated filtration.

[0005] A filter press that can perform heat-insulated filtration provided by this application adopts the following technical solutions:

[0006] A filter press that can perform heat-insulated filtration includes a frame, a thrust plate, a pressing plate, a filter plate group, and a top pressure oil cylinder. The thrust plate and the pressing plate are oppositely arranged on the frame. The top pressure oil cylinder is arranged on the frame. The pressing plate is fixedly connected to the output end of the top pressure oil cylinder. The top pressure oil cylinder is used to drive the pressing plate to approach or move away from the thrust plate. The filter plate group is arranged on the frame and is pressed between the thrust plate and the pressing plate. The thrust plate is provided with a feed pipe and a discharge pipe for communicating with the chamber of the filter plate group, and a feed pump is arranged on the feed pipe; it also includes a steam generator and a steam pipeline. One end of the steam pipeline is connected to the steam generator, and the other end of the steam pipeline is communicated with the feed pipe.

[0007] By adopting the above technical solution, during use, the top pressure oil cylinder is started to press the filter plate group tightly between the thrust plate and the pressing plate, and then the feeding pump is started. The material is pumped into the chamber of the filter plate group through the feeding pipe and then pressed and filtered. The solid substances in the material remain in the chamber of the filter plate group, and the liquid is discharged from the discharge pipe. While the material is being pumped in, the steam generator is started to also feed high-temperature steam into the feeding pipe through the steam pipe. The high-temperature steam completes the heating of the material during the process of flowing with the material, and the high-temperature steam can play a role in continuously keeping the material warm after entering the chamber of the filter press. The structure is simple and easy to use, improving the problem that the method of pre-heating the material is not only cumbersome in operation but also the filtration efficiency is not significantly improved.

[0008] Optionally, the feeding pipe is divided into a first pipe and a second pipe. The feeding pump is arranged on the first pipe, the steam pipe is connected to the first pipe, and the second pipe is used to communicate with the chamber of the filter plate group. An elongated pipe integrally in a spiral shape is connected between the first pipe and the second pipe. One end of the elongated pipe is connected to the first pipe, and the other end of the elongated pipe is connected to the second pipe.

[0009] By adopting the above technical solution, the setting of the elongated pipe can further increase the flow path of the material, so that the high-temperature steam can fully heat the material, improve the heating effect of the material, reduce the viscosity of the material, and further improve the filtration effect of the material.

[0010] Optionally, a rotating shaft is rotatably connected in the first pipe. The rotating shaft is coaxial with the first pipe, and a stirring impeller is connected to the rotating shaft.

[0011] By adopting the above technical solution, the material flows in the first pipe under the action of the feeding pump, thereby driving the stirring impeller to rotate around the rotating shaft, and further stirring the material during the flowing process, so that the heating of the material is more uniform, improving the heating effect of the high-temperature steam on the material, and using the flow of the material itself to drive the rotation of the stirring impeller without the need to additionally set a power component, saving costs.

[0012] Optionally, heat insulation layers are provided on the outer walls of both the feeding pipe and the elongated pipe.

[0013] By adopting the above technical solution, the setting of the heat insulation layer can reduce the heat loss of the material when flowing in the feeding pipe and the elongated pipe, saving costs.

[0014] Optionally, a gas-liquid separator is connected to the end of the discharge pipe. A liquid discharge pipe and an exhaust pipe are provided on the gas-liquid separator, and a breathable screen is provided in the exhaust pipe.

[0015] By adopting the above technical solution, after the material flowing out from the end of the discharge pipe is separated by the gas-liquid separator, the liquid flows out from the liquid outlet pipe and is collected, and the mixed steam is discharged from the exhaust pipe. The gas-liquid separator can separate the steam used for heating the material, reducing the interference of the steam on the dialyzed liquid; the air-permeable sieve mesh can filter the impurities that may be doped in the steam, reducing the environmental pollution caused by the direct discharge of the steam.

[0016] Optionally, a temperature sensor is provided in the chamber of the filter plate group, a controller is provided on the frame, and the controller is electrically connected to the temperature sensor and the steam generator.

[0017] By adopting the above technical solution, different viscous materials require different heating temperatures. The temperature sensor can monitor the temperature of the material in the chamber of the filter plate group in real time. Through the electrical connection between the temperature sensor, the controller and the steam generator, the controller can timely adjust the steam generation amount and temperature of the steam generator according to the detection data of the temperature sensor, so as to achieve a better material heating effect, with high heating accuracy and strong controllability.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. During the process of the material being pumped into the chamber of the filter plate group by the feeding pump through the feeding pipe, the steam generator and the steam pipeline are arranged, so that the high-temperature steam can also flow along with the material and finally enter the chamber of the filter plate group. The high-temperature steam heats the material during the flowing process, and after entering the chamber of the filter plate group, the existence of the high-temperature steam can also play a role in continuously maintaining the temperature of the material, improving the problem that the preheating method of the material is not only cumbersome in operation but also the filtration efficiency is not significantly improved;

[0020] 2. The setting of the overall spiral-shaped lengthened pipe can increase the flow path of the material, thereby improving the heating effect of the high-temperature steam on the material, reducing the viscosity of the material, and further improving the material filtration effect;

[0021] 3. The matching setting of the rotating shaft and the stirring impeller enables the stirring impeller to rotate around the rotating shaft during the flowing process of the material, so as to realize the stirring effect on the material, making the material heated more evenly and improving the material heating effect; and the stirring impeller is driven by the flow of the material itself, without the need to set an additional power source, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0024] Figure 2 is Figure 1 the partial enlarged schematic diagram of part A in

[0025] Reference numerals: 1, filter press main body; 11, frame; 111, controller; 12, thrust plate; 13, pressing plate; 14, filter plate group; 141, temperature sensor; 15, top pressing oil cylinder; 16, feed pipe; 161, first pipeline; 1611, card slot; 1612, clamping block; 1613, rotating bearing; 1614, rotating shaft; 1615, stirring impeller; 162, second pipeline; 163, extension pipe; 17, discharge pipe; 18, feeding pump; 2, heating and heat preservation mechanism; 21, steam generator; 22, steam pipeline; 23, heat preservation layer; 3, gas-liquid separator; 31, liquid discharge pipe; 32, exhaust pipe; 33, breathable screen. Detailed implementation manners

[0026] The following will further describe the present application in detail Figure 1-2 in conjunction with the appended

[0027] The embodiment of the present application discloses a filter press that can perform heat preservation and filtration. Referring to Figure 1 , the filter press that can perform heat preservation and filtration includes a filter press main body 1 and a heating and heat preservation mechanism 2. The filter press main body 1 is used to filter the input material, and the heating and heat preservation mechanism 2 is used to heat and keep warm the input material, thereby reducing the viscosity of the material and improving the filtration efficiency.

[0028] Exemplarily, the filter press main body 1 includes a frame 11, a thrust plate 12, a pressing plate 13, a filter plate group 14, and a top pressing oil cylinder 15. The thrust plate 12 is fixedly arranged on the frame 11. The pressing plate 13 is arranged opposite to the thrust plate 12 on the frame 11. The top pressing oil cylinder 15 is arranged horizontally on the frame 11, and the pressing plate 13 is fixedly connected to the output end of the top pressing oil cylinder 15. Starting the top pressing oil cylinder 15 can drive the pressing plate 13 to move towards or away from the thrust plate 12. The filter plate group 14 is arranged between the thrust plate 12 and the pressing plate 13, and the filter plate group 14 is slidably clamped on the frame 11 along the moving direction of the output end of the top pressing oil cylinder 15. During the process of the pressing plate 13 moving towards the thrust plate 12, the filter plate group 14 is pressed between the thrust plate 12 and the pressing plate 13. A chamber of the filter plate group 14 is arranged inside the filter plate group 14. A feed pipe 16 and a discharge pipe 17 for communicating with the chamber of the filter plate group 14 are connected to the thrust plate 12, and a feed pump 18 is connected to the feed pipe 16 through a flange.

[0029] During use, start the top pressing oil cylinder 15 to push the pressing plate 13 towards the thrust plate 12. Under the action of the pressing plate 13, the filter plate group 14 is pressed between the thrust plate 12 and the pressing plate 13. Then start the feed pump 18 to pump the material into the chamber of the filter plate group 14 through the feed pipe 16 to complete the pressure filtration operation. The solid substances in the material remain in the chamber of the filter plate group 14, and the liquid in the material is pressed out and discharged through the discharge pipe 17.

[0030] The heating and heat preservation mechanism 2 includes a steam generator 21 and a steam pipe 22. The steam generator 21 is used to generate high-temperature steam. One end of the steam pipe 22 is connected to the steam generator 21, and the other end of the steam pipe 22 is communicated with the feed pipe 16. During the process of the material being pumped into the feed pipe 16 by the feed pump 18, start the steam generator 21 at the same time. The high-temperature steam enters the feed pipe 16 through the steam pipe 22. During the process of the high-temperature steam flowing in contact with the material, the material is heated. And because the high-temperature steam enters the chamber of the filter plate group 14 together with the material, it can also play a role in continuously heat-preserving the material. The structure is simple and convenient to use, improving the problem that the way of pre-heating the material is not only cumbersome in operation but also the filtration efficiency is not improved significantly.

[0031] Further, since the optimal heating temperatures required for different materials to reduce viscosity are different, in order to adapt to the optimal heating temperatures required for different materials, a high-temperature and high-pressure resistant temperature sensor 141 is arranged in the chamber of the filter plate group 14, and a controller 111 is arranged on the frame 11. The controller 111 is electrically connected to both the temperature sensor 141 and the steam generator 21. The temperature sensor 141 transmits the detected temperature data to the controller 111, and the controller 111 sends an adjustment electrical signal to the steam generator 21, thereby controlling the steam generator 21 to adaptively adjust the steam generation amount and temperature, so as to achieve precise adjustment of the material heating temperature and achieve a better material heating effect.

[0032] In addition, in order to improve the heating effect, the feed pipe 16 is divided into a first pipe 161 and a second pipe 162. One end of the second pipe 162 is installed on the thrust plate 12 for communicating with the chamber of the filter plate group 14; the feeding pump 18 is flange-connected to the first pipe 161, and the steam pipe 22 is also communicated with the first pipe 161. A lengthening pipe 163 is flange-connected between the first pipe 161 and the second pipe 162. The lengthening pipe 163 is integrally spiral. One end of the lengthening pipe 163 is connected to the first pipe 161, and the other end of the lengthening pipe 163 is connected to the end of the second pipe 162 away from the thrust plate 12. Through the arrangement of the spiral lengthening pipe 163, the flow path of the material mixed with high-temperature steam is improved, thereby improving the heating effect of the material; and the structural arrangement of the spiral lengthening pipe 163 can also save space and reduce the limitation of the installation space.

[0033] Referring to Figure 2 , in order to further improve the heating effect of the material, a clamping groove 1611 is formed on the inner wall of the first pipe 161, a clamping block 1612 is clamped in the clamping groove 1611, a rotating shaft bearing 1613 coaxial with the first pipe 161 is arranged on the clamping block 1612, a rotating shaft 1614 is coaxially connected to the inner wall of the rotating shaft bearing 1613, and a stirring impeller 1615 is arranged on the peripheral wall of the rotating shaft 1614. When the material is pumped into the first pipe 161 by the feeding pump 18, the stirring impeller 1615 rotates driven by the flow of the material, thereby driving the material to be stirred during the flow process, and further improving the heating effect of the high-temperature steam on the material. The structure is simple and practical. In addition, in order to improve the heat preservation effect during the input process of the material, heat preservation layers are provided on the outer walls of the feed pipe 16 and the lengthening pipe 163.

[0034] Further, referring to Figure 1, since steam used for heating is doped in the process of pumping the material, a gas-liquid separator 3 is connected to the end of the discharge pipe 17. A liquid discharge pipe 31 and an exhaust pipe 32 are provided on the gas-liquid separator 3, and a breathable screen 33 is provided in the exhaust pipe 32. The gas-liquid separator 3 is used to separate the gas in the liquid dialyzed from the material. The liquid is discharged and collected from the liquid discharge pipe 31 of the gas-liquid separator 3, and the gas is discharged from the exhaust pipe 32 of the gas-liquid separator 3. The setting of the gas-liquid separator 3 reduces the interference of the steam on the liquid dialyzed from the material, and the setting of the breathable screen 33 can filter the impurities that may be doped in the steam, reducing the environmental pollution caused by the direct discharge of the steam.

[0035] The implementation principle of the filter press that can perform heat preservation and filtration in the embodiment of the present application is as follows: during use, the top pressure oil cylinder 15 is started to push the pressing plate 13 towards the thrust plate 12, so as to clamp and fix the filter plate group 14 between the pressing plate 13 and the thrust plate 12. Then, the feeding pump 18 is started to pump the material into the chamber of the filter plate group 14 through the feeding pipe 16 to complete the pressure filtration operation. At the same time when the feeding pump 18 is started, the steam generator 21 is synchronously started to input high-temperature steam into the feeding pipe 16 together. During the process of the material flowing in the feeding pipe 16, the high-temperature steam completes the heating of the material; and because the high-temperature steam is mixed with the material and pumped into the chamber of the filter plate group 14 together, it can also play a role in continuously keeping the material warm, improving the problem that the method of pre-heating the material is not only cumbersome in operation but also the filtration efficiency is not improved significantly. In addition, during the flowing process of the material, the stirring impeller 1615 on the rotating shaft 1614 is driven to rotate, so that the material is stirred evenly, realizing the uniform heating of the material by the high-temperature steam and improving the heating effect of the material; and through the setting of the spiral extended pipe 163, the flow path of the material is increased, further improving the heating effect of the high-temperature steam on the material, reducing the viscosity of the material, and thus improving the filtration effect of the material.

[0036] The above are all optional embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A filter press capable of heat preservation and filtration, comprising a frame (11), a thrust plate (12), a pressing plate (13), a filter plate group (14) and a top pressing oil cylinder (15). The thrust plate (12) and the pressing plate (13) are oppositely arranged on the frame (11). The top pressing oil cylinder (15) is arranged on the frame (11). The pressing plate (13) is fixedly connected to the output end of the top pressing oil cylinder (15). The top pressing oil cylinder (15) is used to drive the pressing plate (13) to approach or move away from the thrust plate (12). The filter plate group (14) is arranged on the frame (11) and the filter plate group (14) is pressed between the thrust plate (12) and the pressing plate (13). It is characterized in that: The thrust plate (12) is provided with a feed pipe (16) and a discharge pipe (17) for communicating with the chambers of the filter plate group (14). An inlet pump (18) is provided on the feed pipe (16); further comprising a steam generator (21) and a steam pipe (22). One end of the steam pipe (22) is connected to the steam generator (21), and the other end of the steam pipe (22) is communicated with the feed pipe (16).

2. The filter press capable of heat preservation and filtration according to claim 1, characterized in that: The feed pipe (16) includes a first pipe (161) and a second pipe (162). The inlet pump (18) is provided on the first pipe (161). The steam pipe (22) is connected to the first pipe (161). The second pipe (162) is used for communicating with the chambers of the filter plate group (14); a lengthening pipe (163) which is integrally spiral is connected between the first pipe (161) and the second pipe (162). One end of the lengthening pipe (163) is connected to the first pipe (161), and the other end of the lengthening pipe (163) is connected to the second pipe (162).

3. The pressure filter capable of heat preservation and filtration according to claim 2, wherein: A rotating shaft (1614) is rotatably connected in the first pipe (161). The rotating shaft (1614) is coaxial with the first pipe (161). A stirring impeller (1615) is connected to the rotating shaft (1614).

4. A filter press capable of heat preservation and filtration according to claim 2, wherein: Heat-insulating layers (23) are provided on the outer walls of the feed pipe (16) and the lengthening pipe (163).

5. The filter press capable of heat preservation and filtration according to claim 1, wherein: The end of the discharge pipe (17) is connected to a gas-liquid separator (3). The gas-liquid separator (3) is provided with a liquid discharge pipe (31) and an exhaust pipe (32). A breathable sieve (33) is provided in the exhaust pipe (32).

6. The filter press capable of heat preservation and filtration according to claim 1, wherein: A temperature sensor (141) is provided in the chambers of the filter plate group (14). A controller (111) is provided on the frame (11). The controller (111) is electrically connected to the temperature sensor (141) and the steam generator (21).

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