A high-efficiency speed-controllable filtration device

Abstract

The invention discloses a high-efficiency controllable speed filtration device, which belongs to the technical field of filtration equipment, and comprises a base, a filtration mechanism and a negative pressure mechanism. The filtration mechanism is arranged on the base, and a plurality of filtration mechanisms are arranged. Each group of filtration mechanisms can independently perform filtration operations. The filtration mechanism comprises a filtration bottle, a support frame, a filtering mechanism and a funnel. The support frame is installed on the base, and the support frame is used to fix and support the filtering mechanism. The filtering mechanism is used to filter the liquid in the funnel. The filtration bottle is placed on the base, and the filtration bottle is used to collect the liquid filtered by the filtering mechanism. The negative pressure mechanism is installed on the base, and the negative pressure mechanism is used to perform air extraction operations on the inside of the filtration bottle, so that the inside of the filtration bottle is always kept in a negative pressure state. The invention arranges a plurality of filtration mechanisms, and each group of filtration mechanisms can independently perform filtration operations, thereby realizing simultaneous filtration of multiple batches of liquids, and greatly improving the filtration efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of filtration equipment, in particular to a high-efficiency speed-controllable filtration device. Background Art

[0002] At present, in the laboratory research fields of chemistry, chemical engineering, medicine, etc., suction filtration operation is often used for samples that are not easy to filter. Suction filtration is a filtering method that increases the pressure difference between the upper and lower parts of the filter medium by drawing a vacuum under the filter medium, pushing the liquid out through the filter medium, and intercepting large particles.

[0003] A Chinese patent with announcement number CN219399154U discloses a filtration device that is easy to replace filter membranes, including a workbench, a filtering structure installed on the upper wall of the workbench, a funnel structure installed on the upper wall of the workbench, and a filtration structure installed on the upper wall of the workbench. The filter paper is clamped in the middle by a combined funnel. The filter paper can be replaced by separating the funnel, which reduces the difficulty of replacing the filter paper. The problem of placing the filter paper in the traditional filtration equipment inside the funnel is solved. After the filtration process, the filter paper becomes wet and clings to the inner wall of the funnel. At this time, the funnel needs to be removed from the filtration bottle to replace the filter paper, which is very troublesome.

[0004] The above-mentioned filtration equipment still has some defects when used in practice, for example, it is impossible to filter multiple batches of liquid at the same time, and the filtration efficiency is low;

[0005] When the filter paper needs to be replaced, the funnel needs to be removed, which requires suspending the filtration work. Moreover, when the filter paper needs to be replaced, if there is still unfiltered liquid in the funnel, the liquid in the funnel is easy to spill to the outside when the funnel is removed, thereby polluting the environment.

[0006] Therefore, a high-efficiency and speed-controllable filtration device is proposed. Summary of the invention

[0007] The object of the present invention is to provide a high-efficiency speed-controllable filtration device, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solution: a high-efficiency and speed-controllable filtration device, comprising:

[0009] Base;

[0010] A filtration mechanism, the filtration mechanism is arranged on the base, the filtration mechanism is provided with several groups, each group of the filtration mechanism can independently perform filtration operations, and the filtration mechanism includes a filtration bottle, a support frame, a filtration mechanism and a funnel;

[0011] The support frame is installed on the base, and the support frame is used to fix and support the filtering mechanism;

[0012] The filtering mechanism is used to filter the liquid in the funnel;

[0013] The suction filter bottle is placed on the base, and the suction filter bottle is used to collect the liquid filtered by the filtering mechanism;

[0014] A negative pressure mechanism is installed on the base and is used to evacuate the interior of the suction bottle so that the interior of the suction bottle is always kept in a negative pressure state.

[0015] In a high-efficiency controllable-speed filtration device according to the present invention, optionally, the filtration mechanism comprises an upper filtration tube and a three-way valve, the upper filtration tube is arranged in an inverted U shape, the middle of the upper filtration tube is connected with a connecting nozzle, a second annular sealing plug is installed inside the connecting nozzle, and the lower end seal of the funnel penetrates the second annular sealing plug and then extends into the interior of the connecting nozzle;

[0016] The water inlets at both ends of the three-way valve are connected with lower filter tubes, the lower filter tubes are arranged in an L shape, the water outlet of the three-way valve is connected with a second connecting hose, the lower end of the second connecting hose is fixedly connected with a plug-in tube, the lower end of the plug-in tube is fixedly sleeved with a first annular sealing plug, and the first annular sealing plug is sealed and plugged at the bottle mouth of the suction filter bottle;

[0017] An outer step groove is provided on the upper outer wall of the lower filter tube, an inner step groove is provided on the upper inner wall of the lower filter tube, a filter membrane is arranged in the inner step groove, and the lower end of the upper filter tube is connected to the upper end of the lower filter tube through a disassembly mechanism;

[0018] The disassembly and assembly mechanism comprises a movable tube, the upper end of the movable tube is slidably sleeved on the outer wall of the lower end of the upper filter tube, the lower end of the movable tube is pressed on the top of the outer step groove, the filter membrane is located inside the movable tube, the inner lower end of the movable tube is fixedly connected with a cross rod, the top of the cross rod is fixedly connected with a movable column, the upper end of the movable column is conically arranged, the lower end of the upper filter tube is installed with a third annular sealing plug, the upper surface of the third annular sealing plug is arranged in an inverted truncated cone shape, a spring is sleeved on the movable column, the upper end of the spring is against the bottom of the upper filter tube, the bottom of the spring is pressed on the cross rod, and the movable tube can be pressed against the outer step groove under the elastic force of the spring;

[0019] When removing the clogged filter membrane, first control the three-way valve to connect the lower filter tube corresponding to the unblocked filter membrane with the suction filter bottle. At this time, the passage between the lower filter tube corresponding to the blocked filter membrane and the suction filter bottle is disconnected, and then pull up the movable tube corresponding to the blocked filter membrane. At this time, the upward moving tube drives the cross rod to move upward, and then the cross rod drives the movable column to move upward. The upward moving column seal is inserted into the third annular sealing plug. The lower end of the upper filter tube corresponding to the blocked filter membrane is in a sealed state. Then continue to pull up the movable tube to separate the lower end of the movable tube from the lower filter tube, exposing the blocked filter membrane. Then take out the blocked filter membrane, replace it with a new one, and then release the movable tube. At this time, the movable tube moves downward under the elastic force of the spring, so that the lower end of the movable tube is pressed again on the top of the outer step groove.

[0020] In a high-efficiency controllable speed filtration device according to the present invention, optionally, a first sealing groove is provided on the outer wall of the lower end of the upper filter tube, a first sealing ring is installed in the first sealing groove, the inner wall of the movable tube is in sealing sliding contact with the first sealing ring, a second sealing groove is provided on the top of the outer step groove, a second sealing ring is installed in the second sealing groove, and the bottom of the movable tube is pressed on the top of the second sealing ring.

[0021] In a high-efficiency controllable-speed filtration device according to the present invention, optionally, a support plate net is provided inside the inner step groove, and the filter membrane is provided on the support plate net.

[0022] In a high-efficiency controllable speed filtration device according to the present invention, optionally, the support frame includes a support seat, the lower end of the support seat is provided with a waist hole for installation, a bolt passes through the waist hole and is threadedly fixed to the base, the upper end of the support seat is fixedly connected to an I-frame, both sides of the upper end of the I-frame are fixedly connected to an upper mounting sleeve, both sides of the lower end of the I-frame are fixedly connected to a lower mounting sleeve, the lower end of the upper filter tube is inserted into the upper mounting sleeve, and the upper end of the lower filter tube is inserted into the lower mounting sleeve, and handle bolts are threadedly installed on the upper mounting sleeve and the lower mounting sleeve, and the upper filter tube can be fixed to the upper mounting sleeve and the lower filter tube can be fixed to the lower mounting sleeve by tightening the corresponding handle bolts.

[0023] In a high-efficiency controllable speed filtration device according to the present invention, optionally, an elastic sheet is fixedly connected to the bottom of the upper mounting sleeve, a clamp is fixedly connected to the bottom of the elastic sheet, annular limit grooves are equidistantly provided on the outer wall of the movable tube from top to bottom, and the clamp can be clamped into the annular limit groove.

[0024] In a high-efficiency controllable-speed filtration device according to the present invention, optionally, the negative pressure mechanism includes a filtration pump and a negative pressure pipe, the filtration pump and the negative pressure pipe are both installed on the base, the air inlet of the filtration pump is connected with one end of the negative pressure pipe, the other end of the negative pressure pipe is sealed, and a connecting pipe is formed at the upper end of the filtration bottle, a first connecting hose is sealed and plugged on the connecting pipe, the first connecting hose is connected to the negative pressure pipe at one end away from the filtration bottle, and a rate control valve is installed on the first connecting hose.

[0025] In a high-efficiency controllable speed filtration device according to the present invention, optionally, a pressure sensor is installed on the lower filter tube, an alarm light corresponding to the pressure sensor is installed on the support seat, a signal output end of the pressure sensor is electrically connected to a signal input end of a controller, and the alarm light is controlled by the controller.

[0026] In a high-efficiency controllable-speed filtration device according to the present invention, optionally, the rate control valve and the three-way valve are both controlled by the controller.

[0027] In a high-efficiency controllable-speed filtration device according to the present invention, optionally, a control box is fixedly mounted on the base, a touch screen is fixedly embedded on the control box, the controller is fixedly mounted in the control box, and the touch screen is electrically connected to the controller.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention provides multiple groups of filtration mechanisms, each of which can independently perform filtration operations, thereby achieving simultaneous filtration of multiple batches of liquids, greatly improving the filtration efficiency. This feature is particularly important in laboratory research fields such as chemistry, chemical engineering, and medicine, and can significantly shorten the experimental cycle and improve research efficiency.

[0030] The clogged filter membrane can be quickly replaced by the disassembly and assembly mechanism, so that when replacing the clogged filter membrane, there is no need to disassemble the funnel. The filter membrane can be easily replaced by pulling and loosening the movable tube, which saves time and avoids environmental pollution caused by liquid spillage in the funnel. When replacing the clogged filter membrane, the filtration work is switched to another unblocked filter membrane, so that when replacing the clogged filter membrane, the filtration work will not be interrupted, ensuring the filtration efficiency;

[0031] The support frame is provided to facilitate the support of the filter mechanism and the disassembly and assembly of the filter mechanism. When the parts in the filter mechanism need to be replaced or cleaned, the upper filter tube, the lower filter tube and the disassembly and assembly mechanism can be disassembled by simply loosening the handle bolt, which is easy to operate.

[0032] Users can easily set the filtration rate and monitor the filtration status through the touch screen, and issue an alarm when the filter membrane is clogged to remind personnel to replace the filter membrane in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic structural diagram of a high-efficiency, speed-controllable filtration device of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a support frame in a high-efficiency and speed-controllable filtration device of the present invention;

[0035] Figure 3 It is a structural schematic diagram of a filtering mechanism in a high-efficiency speed-controllable filtering device of the present invention;

[0036] Figure 4 It is a partial cross-sectional structural schematic diagram of a filtering mechanism in a high-efficiency speed-controllable filtering device of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of a lower filter tube in a high-efficiency speed-controllable filtration device of the present invention;

[0038] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part A;

[0039] Figure 7 This is a state diagram of the filter mechanism in a high-efficiency speed-controlled filtration device of the present invention when the filter paper is replaced;

[0040] Figure 8 It is a state diagram from another perspective of the filtering mechanism in a high-efficiency and speed-controllable filtration device of the present invention when the filter paper is replaced;

[0041] Fig. 9 This is a schematic diagram of the connection structure between the support frame and the filtering mechanism in a high-efficiency and speed-controllable filtration device of the present invention;

[0042] Fig.10 The present invention is a schematic diagram of the connection structure between a funnel and a filtering mechanism in a high-efficiency and speed-controllable filtration device.

[0043] In the figure: 1, base; 101, control box; 102, touch screen; 2, suction pump; 3, negative pressure tube; 4, suction bottle; 401, first annular sealing plug; 402, first connecting hose; 403, rate control valve; 5, support frame; 501, support seat; 5011, waist hole; 502, I-beam frame; 503, upper mounting sleeve; 504, lower mounting sleeve; 505, handle bolt; 506, elastic sheet; 5061, clamp; 6, filtering mechanism; 601, upper filter tube; 6011, connecting nozzle; 6012, second annular sealing plug ; 6013, third annular sealing plug; 6014, first sealing ring; 602, three-way valve; 603, lower filter tube; 6031, second sealing ring; 6032, inner step groove; 6033, support plate net; 6034, outer step groove; 604, second connecting hose; 605, plug-in tube; 606, disassembly and assembly mechanism; 6061, movable tube; 60611, annular limit groove; 6062, movable column; 60621, cross rod; 6063, spring; 607, pressure sensor; 608, warning light; 7, funnel; 8, filter membrane. DETAILED DESCRIPTION

[0044] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0045] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0046] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside", etc. appear to indicate the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0047] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] See also Figures 1 to 10 This embodiment provides a high-efficiency controllable speed filtration device, including a base 1, a filtration mechanism, a negative pressure mechanism and a controller.

[0049] Among them, the filtration mechanism is arranged on the base 1, and the filtration mechanism is provided with several groups. Each group of filtration mechanism can independently perform filtration operation. The filtration mechanism includes a filtration bottle 4, a support frame 5, a filtering mechanism 6 and a funnel 7.

[0050] The support frame 5 is installed on the base 1, and the support frame 5 is used to fix and support the filtering mechanism 6;

[0051] The filtering mechanism 6 is used to filter the liquid in the funnel 7;

[0052] The suction filter bottle 4 is placed on the base 1, and the suction filter bottle 4 is used to collect the liquid filtered by the filtering mechanism 6;

[0053] The negative pressure mechanism is installed on the base 1 and is used to evacuate the interior of the suction bottle 4 so that the interior of the suction bottle 4 is always kept in a negative pressure state.

[0054] Specifically, in this embodiment, the filter mechanism 6 includes an upper filter tube 601 and a three-way valve 602. The upper filter tube 601 is arranged in an inverted U shape. The middle of the upper filter tube 601 is connected with a connecting nozzle 6011. A second annular sealing plug 6012 is installed inside the connecting nozzle 6011. The lower end of the funnel 7 seals through the second annular sealing plug 6012 and then extends into the interior of the connecting nozzle 6011.

[0055] The water inlets at both ends of the three-way valve 602 are connected with a lower filter tube 603, which is L-shaped. The water outlet of the three-way valve 602 is connected with a second connecting hose 604, and the lower end of the second connecting hose 604 is fixedly connected with a plug-in tube 605. The lower end of the plug-in tube 605 is fixedly sleeved with a first annular sealing plug 401, and the first annular sealing plug 401 is sealed and plugged at the bottle mouth of the suction filter bottle 4;

[0056] An outer step groove 6034 is provided on the outer wall of the upper end of the lower filter tube 603, an inner step groove 6032 is provided on the inner wall of the upper end of the lower filter tube 603, a filter membrane 8 is arranged in the inner step groove 6032, and the lower end of the upper filter tube 601 is connected to the upper end of the lower filter tube 603 through a disassembly mechanism 606;

[0057] The disassembly and assembly mechanism 606 includes a movable tube 6061, the upper end of which is slidably sleeved on the outer wall of the lower end of the upper filter tube 601, the lower end of which is pressed on the top of the outer step groove 6034, the filter membrane 8 is located inside the movable tube 6061, the lower end of the inner part of the movable tube 6061 is fixedly connected to a cross rod 60621, the top of the cross rod 60621 is fixedly connected to a movable column 6062, the upper end of the movable column 6062 is set in a conical shape, and the lower end of the upper filter tube 601 is installed with a third annular sealing plug 6013, the third annular The upper surface of the sealing plug 6013 is in the shape of an inverted cone, and a spring 6063 is sleeved on the movable column 6062. The upper end of the spring 6063 is against the bottom of the upper filter tube 601, and the bottom of the spring 6063 is pressed on the cross rod 60621. The movable tube 6061 can be pressed against the outer step groove 6034 under the elastic force of the spring 6063. One of the two filter membranes 8 on the filter mechanism 6 is used as a spare. When the filter membrane 8 in the filtering operation is blocked, it can be switched to the pipeline corresponding to the unblocked filter membrane 8 to continue the filtering operation.

[0058] When the running filter membrane 8 is clogged, the operation steps are as follows: first, the three-way valve 602 is controlled to connect the lower filter tube 603 corresponding to the unblocked filter membrane 8 with the suction filter bottle 4, and at this time, the passage between the lower filter tube 603 corresponding to the blocked filter membrane 8 and the suction filter bottle 4 is disconnected, and then the movable tube 6061 corresponding to the blocked filter membrane 8 is pulled upward, and at this time, the upward moving movable tube 6061 drives the cross rod 60621 to move upward, and then the cross rod 60621 drives the movable column 6062 to move upward, and the upward moving movable column 6062 is tightly closed. The movable tube 6061 is then pulled upwards to separate the lower end of the movable tube 6061 from the lower filter tube 603, exposing the clogged filter membrane 8. The clogged filter membrane 8 is then removed and replaced with a new one. The movable tube 6061 is then released. The movable tube 6061 is then moved downwards by the elastic force of the spring 6063, so that the lower end of the movable tube 6061 is pressed against the top of the outer step groove 6034 again.

[0059] In this embodiment, in order to ensure the sealing between the movable tube 6061 and the upper filter tube 601 and the lower filter tube 603, a first sealing groove is opened on the outer wall of the lower end of the upper filter tube 601, and a first sealing ring 6014 is installed in the first sealing groove. The inner wall of the movable tube 6061 is in sealing sliding contact with the first sealing ring 6014, and a second sealing groove is opened on the top of the outer step groove 6034. The second sealing groove is installed with a second sealing ring 6031, and the bottom of the movable tube 6061 is pressed on the top of the second sealing ring 6031.

[0060] In this embodiment, in order to increase the pressure-bearing capacity of the filter membrane 8 , a support plate mesh 6033 is provided inside the inner step groove 6032 , and the filter membrane 8 is provided on the support plate mesh 6033 .

[0061] In this embodiment, the support frame 5 includes a support seat 501, and a waist hole 5011 for installation is opened at the lower end of the support seat 501. The bolt passes through the waist hole 5011 and is threadedly fixed on the base 1. The upper end of the support seat 501 is fixedly connected with an I-shaped frame 502, and both sides of the upper end of the I-shaped frame 502 are fixedly connected with upper mounting sleeves 503, and both sides of the lower end of the I-shaped frame 502 are fixedly connected with lower mounting sleeves 504. The lower end of the upper filter tube 601 is inserted into the upper mounting sleeve 503, and the upper end of the lower filter tube 603 is inserted into the lower mounting sleeve 504. The upper mounting sleeve 503 and the lower mounting sleeve 504 are both threadedly rotatably installed with handle bolts 505. By tightening the corresponding handle bolts 505, the upper filter tube 601 can be fixed on the upper mounting sleeve 503, and the lower filter tube 603 can be fixed on the lower mounting sleeve 504.

[0062] The support frame 5 is provided to facilitate the support of the filter mechanism 6 and the disassembly and assembly of the filter mechanism 6. When the parts in the filter mechanism 6 need to be replaced or cleaned, the upper filter tube 601, the lower filter tube 603 and the disassembly and assembly mechanism 606 can be removed by simply loosening the lower handle bolt 505, which is easy to operate.

[0063] In this embodiment, the bottom of the upper mounting sleeve 503 is fixedly connected with an elastic sheet 506, and the bottom of the elastic sheet 506 is fixedly connected with a clamping head 5061. The outer wall of the movable tube 6061 is equidistantly provided with annular limiting grooves 60611 from top to bottom, and the clamping head 5061 can be clamped into the annular limiting grooves 60611. By cooperating with the elastic sheet 506, when replacing the clogged filter membrane 8, the movable tube 6061 is pulled upward, and the clamping head 5061 is in the movable tube 60 Under the guidance of the inclined surface 61, the upward movement of the movable tube 6061 will not be hindered. When the movable tube 6061 is loosened, the clamp head 5061 can be stuck in the annular limit groove 60611 to prevent the movable tube 6061 from moving downward. Through this arrangement, there is no need to hold the movable tube 6061 with one hand and operate the filter membrane 8 with the other hand, which makes it more convenient for the operator to replace the blocked filter membrane 8. After the replacement is completed, the clamp head 5061 can be pulled out of the annular limit groove 60611.

[0064] In this embodiment, the negative pressure mechanism includes a suction pump 2 and a negative pressure pipe 3, both of which are installed on the base 1, the air inlet of the suction pump 2 is connected to one end of the negative pressure pipe 3, the other end of the negative pressure pipe 3 is sealed, and a connecting pipe is formed at the upper end of the suction bottle 4, and a first connecting hose 402 is sealed and plugged on the connecting pipe, and the end of the first connecting hose 402 away from the suction bottle 4 is connected to the negative pressure pipe 3, and a rate control valve 403 is installed on the first connecting hose 402. Through this setting, when in use, a suction pump 2 is used as a negative pressure source, and a plurality of suction bottles 4 are filtered at the same time, thereby reducing the usage of the suction pump 2, and by controlling the opening of the rate control valve 403, the filtration rate of the suction bottle 4 can be controlled.

[0065] In this embodiment, a pressure sensor 607 is installed on the lower filter tube 603, and an alarm light 608 corresponding to the pressure sensor 607 is installed on the support seat 501. The signal output end of the pressure sensor 607 is electrically connected to the signal input end of the controller, and the alarm light 608 is controlled by the controller. The rate control valve 403 and the three-way valve 602 are both controlled by the controller. Through the provided pressure sensor 607 and the alarm light 608, when the filter membrane 8 in filtration is blocked, the internal pressure of the lower filter tube 603 corresponding to the blocked filter membrane 8 will increase. When the pressure exceeds the set threshold, the controller controls the alarm light 608 to emit an alarm light to remind the staff to replace the filter membrane 8 in time, and the controller controls the three-way valve 602 to connect the lower filter tube 603 corresponding to the unblocked filter membrane 8 with the suction bottle 4, and disconnect the lower filter tube 603 corresponding to the blocked filter membrane 8 from the suction bottle 4.

[0066] The pressure sensor 607 may be a Honeywell MPX series pressure sensor, such as MPX5010DP. This sensor has high precision, low power consumption and stable performance, and is very suitable for monitoring the blockage of the filter membrane 8. Its working principle is based on the piezoresistive effect. When the pressure changes, the resistance value of the sensor changes, so that the pressure value can be measured.

[0067] The controller can be Siemens S7-1200 series PLC (Programmable Logic Controller). This controller has powerful processing capabilities and a flexible programming environment, and can easily realize functions such as the control of the filtration rate, the control of the alarm light 608, and the switching of the three-way valve 602.

[0068] In this embodiment, a control box 101 is fixedly installed on the base 1, a touch screen 102 is fixedly embedded on the control box 101, a controller is fixedly installed in the control box 101, and the touch screen 102 is electrically connected to the controller. Through this setting, the filtration rate can be easily set and the filtration status can be monitored through the touch screen 102.

[0069] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in the actual process is described in detail below.

[0070] Working principle: When in use, insert the funnel 7 into the connecting nozzle 6011, and then set the filtration rate corresponding to each suction bottle 4 through the touch display screen 102. The controller controls the rate control valve 403 to rotate to the corresponding opening position according to the filtration rate, and then starts the suction pump 2 to perform the filtration operation. When the filter membrane 8 in the filtration operation is blocked, and the internal pressure of the lower filter tube 603 corresponding to the blocked filter membrane 8 exceeds the set threshold, the controller controls the alarm light 608 to emit an alarm light to remind the staff to replace the filter membrane 8 in time. At the same time, the controller controls the three-way valve 602 to connect the lower filter tube 603 corresponding to the unblocked filter membrane 8 with the suction bottle 4, and the lower filter tube 603 corresponding to the blocked filter membrane 8 is disconnected from the suction bottle 4.

[0071] When replacing the filter membrane 8, the movable tube 6061 corresponding to the blocked filter membrane 8 is pulled upwards. At this time, the movable tube 6061 moving upwards drives the cross rod 60621 to move upwards, and then the cross rod 60621 drives the movable column 6062 to move upwards. The movable column 6062 moving upwards is sealed and inserted into the third annular sealing plug 6013. The lower end of the upper filter tube 601 corresponding to the blocked filter membrane 8 is in a sealed state. Then the movable tube 6061 is continuously pulled upwards to separate the lower end of the movable tube 6061 from the lower filter tube 603 to expose the blocked filter membrane 8. Then the blocked filter membrane 8 is taken out and replaced with a new one. Then the movable tube 6061 is released. At this time, the movable tube 6061 moves downwards under the elastic force of the spring 6063, so that the lower end of the movable tube 6061 is pressed against the top of the outer step groove 6034 again.

[0072] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency controllable speed filtration device, characterized in that: include: Base (1); A filtration mechanism, the filtration mechanism being arranged on the base (1), the filtration mechanism being arranged in a plurality of groups, each group of the filtration mechanism being capable of independently performing a filtration operation, the filtration mechanism comprising a filtration bottle (4), a support frame (5), a filtering mechanism (6) and a funnel (7); The support frame (5) is mounted on the base (1), and the support frame (5) is used to fix and support the filtering mechanism (6); The filtering mechanism (6) is used to filter the liquid in the funnel (7); The suction filtration bottle (4) is placed on the base (1), and the suction filtration bottle (4) is used to collect the liquid filtered by the filtering mechanism (6); A negative pressure mechanism, the negative pressure mechanism being mounted on the base (1), the negative pressure mechanism being used to evacuate air from the interior of the suction bottle (4), so that the interior of the suction bottle (4) is always kept in a negative pressure state; The filtering mechanism (6) comprises an upper filtering tube (601) and a three-way valve (602); the upper filtering tube (601) is arranged in an inverted U shape; the middle of the upper filtering tube (601) is connected to a connecting nozzle (6011); a second annular sealing plug (6012) is installed inside the connecting nozzle (6011); the lower end of the funnel (7) seals through the second annular sealing plug (6012) and then extends into the interior of the connecting nozzle (6011); The water inlets at both ends of the three-way valve (602) are both connected to a lower filter tube (603), the lower filter tube (603) is arranged in an L shape, the water outlet of the three-way valve (602) is connected to a second connecting hose (604), the lower end of the second connecting hose (604) is fixedly connected to a plug tube (605), the lower end of the plug tube (605) is fixedly sleeved with a first annular sealing plug (401), and the first annular sealing plug (401) is sealingly plugged into the bottle mouth of the suction filter bottle (4); An outer step groove (6034) is provided on the outer wall of the upper end of the lower filter tube (603), an inner step groove (6032) is provided on the inner wall of the upper end of the lower filter tube (603), a filter membrane (8) is arranged in the inner step groove (6032), and the lower end of the upper filter tube (601) is connected to the upper end of the lower filter tube (603) via a disassembly mechanism (606); The disassembly and assembly mechanism (606) comprises a movable tube (6061), the upper end of the movable tube (6061) is slidably sleeved on the lower outer wall of the upper filter tube (601), the lower end of the movable tube (6061) is pressed against the top of the outer step groove (6034), the filter membrane (8) is located inside the movable tube (6061), the lower end of the movable tube (6061) is fixedly connected to a cross rod (60621), the top of the cross rod (60621) is fixedly connected to a movable column (6062), and the upper end of the movable column (6062) is fixedly connected to the upper end of the movable column (6062). The upper filter tube (601) is arranged in a conical shape, a third annular sealing plug (6013) is installed at the lower end of the upper filter tube (601), the upper surface of the third annular sealing plug (6013) is arranged in an inverted truncated cone shape, a spring (6063) is sleeved on the movable column (6062), the upper end of the spring (6063) is pressed against the bottom of the upper filter tube (601), the bottom of the spring (6063) is pressed on the cross rod (60621), and the movable tube (6061) can be pressed against the outer step groove (6034) under the elastic force of the spring (6063); When removing the blocked filter membrane (8), first control the three-way valve (602) to connect the lower filter tube (603) corresponding to the unblocked filter membrane (8) to the suction filter bottle (4), and then disconnect the passage between the lower filter tube (603) corresponding to the blocked filter membrane (8) and the suction filter bottle (4). Then, pull the movable tube (6061) corresponding to the blocked filter membrane (8) upwards. At this time, the movable tube (6061) moving upwards drives the cross rod (60621) to move upwards, and then the cross rod (60621) drives the movable column (6062) to move upwards. The movable column (6062) moving upwards is sealed and inserted into the third ring. The movable tube (6061) is then pulled upwards to separate the lower end of the movable tube (6061) from the lower filter tube (603), exposing the blocked filter membrane (8). The blocked filter membrane (8) is then removed and replaced with a new filter membrane (8). The movable tube (6061) is then released. At this time, the movable tube (6061) moves downwards under the elastic force of the spring (6063), so that the lower end of the movable tube (6061) is pressed against the top of the outer step groove (6034) again.

2. A high-efficiency, speed-controlled filtration device according to claim 1, characterized in that: A first sealing groove is provided on the outer wall of the lower end of the upper filter tube (601), a first sealing ring (6014) is installed in the first sealing groove, the inner wall of the movable tube (6061) is in sealing sliding contact with the first sealing ring (6014), a second sealing groove is provided on the top of the outer step groove (6034), a second sealing ring (6031) is installed in the second sealing groove, and the bottom of the movable tube (6061) is pressed against the top of the second sealing ring (6031).

3. A high-efficiency, controllable-speed filtration device according to claim 2, characterized in that: A support plate mesh (6033) is provided inside the inner step groove (6032), and the filter membrane (8) is provided on the support plate mesh (6033).

4. A high-efficiency, speed-controlled filtration device according to claim 3, characterized in that: The support frame (5) comprises a support seat (501), a waist hole (5011) for installation is provided at the lower end of the support seat (501), a bolt passes through the waist hole (5011) and is threadedly fixed on the base (1), an I-shaped frame (502) is fixedly connected to the upper end of the support seat (501), upper mounting sleeves (503) are fixedly connected to both sides of the upper end of the I-shaped frame (502), lower mounting sleeves (504) are fixedly connected to both sides of the lower end of the I-shaped frame (502), and the upper filter tube The lower end of the filter tube (601) is inserted into the upper mounting sleeve (503), and the upper end of the lower filter tube (603) is inserted into the lower mounting sleeve (504). Handle bolts (505) are threadedly mounted on both the upper mounting sleeve (503) and the lower mounting sleeve (504). By tightening the corresponding handle bolts (505), the upper filter tube (601) can be fixed to the upper mounting sleeve (503), and the lower filter tube (603) can be fixed to the lower mounting sleeve (504).

5. A high-efficiency, speed-controllable filtration device according to claim 4, characterized in that: The bottom of the upper mounting sleeve (503) is fixedly connected to an elastic sheet (506), the bottom of the elastic sheet (506) is fixedly connected to a clamping head (5061), and the outer wall of the movable tube (6061) is provided with annular limiting grooves (60611) equidistantly from top to bottom, and the clamping head (5061) can be clamped into the annular limiting groove (60611).

6. A high-efficiency, speed-controllable filtration device according to claim 5, characterized in that: The negative pressure mechanism comprises a suction pump (2) and a negative pressure pipe (3), wherein the suction pump (2) and the negative pressure pipe (3) are both mounted on the base (1), an air inlet of the suction pump (2) is connected to one end of the negative pressure pipe (3), the other end of the negative pressure pipe (3) is sealed, a connecting pipe is formed at the upper end of the suction bottle (4), a first connecting hose (402) is sealed and plugged on the connecting pipe, an end of the first connecting hose (402) away from the suction bottle (4) is connected to the negative pressure pipe (3), and a rate control valve (403) is mounted on the first connecting hose (402).

7. A high-efficiency, speed-controllable filtration device according to claim 6, characterized in that: A pressure sensor (607) is installed on the lower filter tube (603), and an alarm light (608) corresponding to the pressure sensor (607) is installed on the support seat (501). The signal output end of the pressure sensor (607) is electrically connected to the signal input end of the controller, and the alarm light (608) is controlled by the controller.

8. A high-efficiency, speed-controllable filtration device according to claim 7, characterized in that: The rate control valve (403) and the three-way valve (602) are both controlled by the controller.

9. A high-efficiency, speed-controllable filtration device according to claim 8, characterized in that: A control box (101) is fixedly mounted on the base (1), a touch display screen (102) is fixedly embedded on the control box (101), the controller is fixedly mounted in the control box (101), and the touch display screen (102) is electrically connected to the controller.

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