A fast-changing membrane stack diffusion dialysis machine

Abstract

The present invention belongs to the field of membrane separation technology, and in particular, is a fast-changing membrane stack type diffusion dialysis machine, comprising four support legs, wherein each two support legs form a group, and the two groups of support legs are divided into two groups, and the upper surfaces of the two groups of support legs are fixedly connected with fixed blocks, and the upper surface of the fixed block located on the left side of the support leg is fixedly installed with a pressure control mechanism, and the pressure control mechanism includes a fixed clamping plate, and the lower surface of the fixed clamping plate is fixedly connected to the upper surface of the fixed block located on the left side of the support leg. The fast-changing membrane stack type diffusion dialysis machine, by setting a fast-changing mechanism, achieves the design of two unique first water distribution plates and second water distribution plates of the present invention, and all membrane stacks are sandwiched between the two water distribution plates, and are connected to the first water distribution plate and the second water distribution plate through internal secret passages, and there is no pipeline connection on the membrane stack, thereby achieving the replacement of the membrane stack without disassembling the pipeline, and the membrane stack replacement time is shortened from the original 2-4 hours to 5-10 minutes, which greatly improves the work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of membrane separation, and in particular to a fast-changing membrane stack type diffusion dialysis machine. Background Art

[0002] Diffusion dialysis refers to the use of ion exchange membranes to separate feed liquid and receiving liquid of different concentrations. The solute diffuses from the high-concentration side through the membrane stack to the low-concentration side. When the concentrations on both sides of the membrane reach equilibrium, the dialysis process stops. The concentration difference is the driving force of dialysis. During the dialysis process, the feed liquid and the receiving liquid generally flow in reverse directions.

[0003] Because the membrane stacks of the diffusion dialysis machine are connected with pipelines and adjacent membrane stacks are interconnected, when the membrane stack has problems during use and cannot be used anymore, it needs to be disassembled and replaced. The existing method of replacing the membrane stack is to first disassemble the pipelines on the membrane stack before replacing the membrane stack. This method is not only time-consuming, with the replacement taking 2-4 hours, but also has high labor intensity for the replacement personnel.

[0004] Therefore, the present invention proposes a rapid replacement membrane stack type diffusion dialysis machine. Summary of the invention

[0005] Based on the existing method of replacing the membrane stack, the pipelines on the membrane stack must be dismantled before the membrane stack can be replaced. This method is not only time-consuming, with the replacement time taking 2-4 hours, but also has the technical problem of high labor intensity for the replacement personnel. The present invention proposes a quick-replacement membrane stack diffusion dialysis machine.

[0006] A quick-change membrane stack diffusion dialysis machine proposed by the present invention comprises four supporting legs, wherein every two supporting legs form a group, and the two groups are divided into two groups in total, the upper surfaces of the two groups of supporting legs are fixedly connected with fixed blocks, the upper surface of the fixed block located on the left side of the supporting leg is fixedly installed with a pressure control mechanism, and the pressure control mechanism comprises a fixed pressing plate, the lower surface of the fixed pressing plate is fixedly connected to the upper surface of the fixed block located on the left side of the supporting leg, and the upper surface of the fixed block located on the right side of the supporting leg is fixedly connected with a C-shaped plate, the front and back sides of the fixed pressing plate are fixedly installed with partitions by bolts to the front and back sides of the C-shaped plate, and the two partitions are symmetrically distributed on the front and back sides of the fixed pressing plate;

[0007] The opposing surfaces of the two groups of supporting legs are fixedly connected to symmetrically distributed support plates, and the upper surfaces of the two support plates are provided with a quick-change mechanism, and the quick-change mechanism includes a first water distribution plate, and the lower surface of the first water distribution plate is slidably connected to the upper surfaces of the two support plates. The first water distribution plate is located on the leftmost side of the upper surface of the support plate, and the left surface of the first water distribution plate contacts the right surface of the fixed clamping plate, and the front and back sides of the first water distribution plate are respectively slidably connected to the opposing inner surfaces of the two support plates.

[0008] Preferably, a mounting groove is provided at the center of the right side surface of the fixed pressing plate, a pressure sensor is fixedly installed at the center of the left side surface of the fixed pressing plate, the model of the pressure sensor is MEACON brand MIK-P300, the detection end of the pressure sensor extends to the left inner wall of the mounting groove through a through hole, and a compression spring is fixedly connected to the left inner wall of the mounting groove;

[0009] Through the above technical solution, a pressure sensor is fixedly installed at the center of the left surface of the fixed pressing plate to detect the pressure of the installation groove.

[0010] Preferably, a free end of one end of the compression spring is fixedly connected with a square-shaped pressing plate, a sealing sleeve is fixedly sleeved on the outer surface of the pressing plate, the sealing sleeve is made of butyl rubber, the outer surface of the sealing sleeve is slidably sleeved with the inner wall of the mounting groove, the left side surface of the pressing plate and the inner wall opposite to the mounting groove form a piston cavity, the pressure sensor detects the pressure in the piston cavity through the detection end of the pressure sensor, the sealing sleeve seals the contact surface between the outer surface of the pressing plate and the inner wall of the mounting groove, the right side surface of the pressing plate is fixedly connected with a pressing block, the outer surface of the pressing block is octagonal, and the right side surface of the pressing block contacts the left side surface of the first water distribution plate;

[0011] Through the above technical solution, the left surface of the pressure plate and the inner wall opposite to the installation groove form a piston cavity. When the pressure block is subjected to force, it moves from right to left in the piston cavity, and then the increased pressure in the piston cavity is detected by the pressure sensor.

[0012] Preferably, the pressure control mechanism further comprises a mounting seat, the mounting seat is located on one side of two of the supporting legs, a servo motor is fixedly mounted on the upper surface of the mounting seat, an output shaft of the servo motor is threadedly connected to a threaded rod through a gear set, and a movable pressing plate is fixedly connected to one end surface of the threaded rod;

[0013] Through the above technical solution, the bottom of the mounting base is connected to the ground.

[0014] Preferably, a first water inlet and a first acid inlet are respectively provided on the front of the first water distribution plate, the first water inlet is located above the first acid inlet, and a first waste acid inlet and a first acid production inlet are respectively provided on the back of the first water distribution plate;

[0015] Through the above technical solution, the opening positions of the first water inlet and the first acid inlet on the first water distribution plate are limited.

[0016] Preferably, the first waste acid port is located above the first acid production port, the upper surface of the first water distribution plate is provided with first exhaust ports which are symmetrically distributed, the right side surface of the first water distribution plate is provided with first flow ports, four of the first flow ports are distributed in a rectangular array on the right side surface of the first water distribution plate, and the right inner walls of the four first flow ports are all provided with sealing grooves;

[0017] Through the above technical solution, an O-ring is provided on the inner wall of the sealing groove.

[0018] Preferably, the inner wall of the first water inlet and the inner bottom wall of the first exhaust port located at the front of the upper surface of the first water distribution plate are both fixedly connected to the inner wall of the first flow port located at the front of the upper right end of the first water distribution plate, the inner wall of the first waste acid port and the inner bottom wall of the first exhaust port at the rear of the upper surface of the first water distribution plate are both fixedly connected to the inner wall of the first flow port located at the rear of the upper right end of the first water distribution plate, the inner wall of the first acid inlet is fixedly connected to the inner wall of the first flow port located at the front of the lower right end of the first water distribution plate, and the inner wall of the first acid generating port is fixedly connected to the inner wall of the first flow port at the rear of the lower right end of the first water distribution plate;

[0019] Through the above technical solution, the connections between the four first flow ports and the first water inlet, the first acid inlet, the first waste acid port, the first acid production port and the first exhaust port are disclosed in detail.

[0020] Preferably, the quick-change mechanism further comprises a second water distribution plate, the materials of the first water distribution plate and the second water distribution plate are both UPVC or CPVC, the thickness range of the first water distribution plate and the second water distribution plate is both 30-60MM, the front of the second water distribution plate is respectively provided with a second water inlet and a second acid inlet, the second water inlet is located above the second acid inlet, the back of the second water distribution plate is respectively provided with a second waste acid port and a second acid production port, the second waste acid port is located above the second acid production port, the upper surface of the second water distribution plate is provided with second exhaust ports which are symmetrically distributed, and the left surface of the second water distribution plate is provided with a second exhaust port which is symmetrically distributed. The second flow ports are arranged in a shaped array, the inner wall of the second water inlet and the inner bottom wall of the second exhaust port located at the front of the upper surface of the second water distribution plate are fixedly connected to the inner wall of the second flow port located at the rear of the upper end of the left side of the second water distribution plate, the inner wall of the second waste acid port and the inner bottom wall of the second exhaust port at the rear of the upper surface of the second water distribution plate are fixedly connected to the inner wall of the second flow port located at the front of the upper end of the left side of the second water distribution plate, the inner wall of the second acid inlet is fixedly connected to the inner wall of the second flow port located at the rear of the lower end of the left side of the second water distribution plate, and the inner wall of the second acid generating port is fixedly connected to the inner wall of the second flow port at the front of the lower end of the left side of the second water distribution plate;

[0021] Through the above technical solution, the hole depths of the first flow port and the second flow port are MM.

[0022] Preferably, a plurality of membrane stacks arranged in sequence are placed between the right side surface of the first water distribution plate and the left side surface of the second water distribution plate, the lower surfaces of the plurality of membrane stacks are all slidably connected to the lower surface of the support plate, the front and back sides of the plurality of membrane stacks are respectively slidably connected to the surfaces opposite to the two partitions, and the number of membrane stacks can be adjusted as needed, wherein a single membrane stack specifically comprises a first clamping plate, a second clamping plate, a plurality of anion exchange membranes and a connecting plate, the left side surface of the first clamping plate located on the leftmost side of the support plate contacts the right side surface of the first water distribution plate, the right side of the first clamping plate located on the rightmost side of the support plate contacts the left side surface of the second water distribution plate, the right side lower end surface of the first clamping plate is fixedly connected to the left side surface of the connecting plate, the right side surface of the connecting plate contacts the left side surface of the second clamping plate, the adjacent first clamping plates and the second clamping plates are threadedly connected by bolts, the plurality of anion exchange membranes are located between the adjacent first clamping plates and the second clamping plates, and the lower surfaces of the plurality of anion exchange membranes are all in contact with the upper surface of the connecting plate;

[0023] Through the above technical solution, the specific structure in the membrane stack is disclosed in detail.

[0024] Preferably, a first flow channel distributed in a rectangular array is opened on the left side surface of one of the first clamps, a second flow channel distributed symmetrically is opened on the right side surface of one of the first clamps, the inner wall of the first flow channel is fixedly connected to the inner wall of the second flow channel, a third flow channel distributed in a rectangular array is opened on the right side surface of one of the second clamps, a fourth flow channel distributed symmetrically is opened on the left side surface of one of the first clamps, the inner wall of the third flow channel is fixedly connected to the inner wall of the fourth flow channel, the inner wall of the first flow channel of the first clamp in the leftmost membrane stack on the upper surface of the support plate is sealed with the inner wall of the first flow port on the right side surface of the first water distribution plate by an O-ring, the inner wall of the third flow channel of the second clamp in the leftmost membrane stack on the upper surface of the support plate is sealed with the inner wall of the first flow channel of the first clamp in the next membrane stack by an O-ring, the adjacent membrane stacks are connected in sequence, the inner wall of the third flow channel of the second clamp in the rightmost membrane stack on the upper surface of the support plate is sealed with the inner wall of the second flow port on the left side surface of the second water distribution plate by an O-ring, and the left side surface of the movable clamping plate is in contact with the right side surface of the second water distribution plate.

[0025] The beneficial effects of the present invention are:

[0026] 1. By setting a compression spring fixedly connected to the left inner wall of the installation groove, the compression spring is set on the inner wall of the installation groove, so that the pressure block and the pressure plate sliding in the installation groove have a self-reset effect after losing external force extrusion.

[0027] 2. By setting up a pressure control mechanism, the pressure sensor installed on the left surface of the fixed pressure plate can detect the pressure in the piston cavity. When the pressure in the piston cavity reaches the preset pressure value, it indicates that the first water distribution plate, multiple membrane stacks and the second water distribution plate are installed in place, thereby avoiding the first water distribution plate, multiple membrane stacks and the second water distribution plate from being damaged due to excessive pressure.

[0028] 3. By setting up a quick replacement mechanism, the present invention designs two unique first water distribution plates and a second water distribution plate. All membrane stacks are sandwiched between the two water distribution plates and connected to the first water distribution plate and the second water distribution plate through internal secret passages. There are no pipe connections on the membrane stacks, so the membrane stacks can be replaced without dismantling the pipes. The replacement time of the membrane stack is shortened from the original 2-4 hours to 5-10 minutes, which greatly improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a rapid replacement membrane stack diffusion dialysis machine;

[0030] Figure 2 A three-dimensional diagram of the partition structure of a quick-change membrane stack diffusion dialysis machine;

[0031] Figure 3It is an exploded view of the fixed pressing plate structure of a quick-change membrane stack diffusion dialysis machine;

[0032] Figure 4 A three-dimensional diagram of an L-shaped block structure of a quick-change membrane stack diffusion dialysis machine;

[0033] Figure 5 It is a right view of the first water distribution plate structure of a quick-change membrane stack diffusion dialysis machine;

[0034] Figure 6 It is a left view of the second water distribution plate structure of a quick-change membrane stack diffusion dialysis machine;

[0035] Figure 7 It is a right view of the second clamping plate structure of a quick-change membrane stack diffusion dialysis machine;

[0036] Figure 8 It is a left view of the second clamping plate structure of a quick-change membrane stack diffusion dialysis machine;

[0037] Fig. 9 It is a left view of the first clamping plate structure of a quick-change membrane stack diffusion dialysis machine;

[0038] Fig.10 It is a right view of the first clamping plate structure of a quick-change membrane stack diffusion dialysis machine;

[0039] Fig.11 A three-dimensional diagram of the structure of a mobile extrusion plate of a quick-change membrane stack diffusion dialysis machine;

[0040] Fig.12 The present invention is a three-dimensional diagram of the servo motor structure of a quick-change membrane stack diffusion dialysis machine.

[0041] In the figure: 1, fixed block; 2, fixed pressing plate; 21, mounting groove; 22, pressure sensor; 23, compression spring; 24, pressing plate; 25, pressing block; 200, servo motor; 201, threaded rod; 26, moving cavity; 27, placement cavity; 28, driving motor; 29, screw rod; 210, moving block; 211, L-shaped block; 212, moving pressing plate; 213, sealing sleeve; 3, C-shaped plate; 4, partition; 5, support plate; 6, first water distribution plate; 61, first water inlet; 62, first acid inlet; 63, first waste acid outlet ; 64, the first acid production port; 65, the first exhaust port; 66, the first flow port; 67, the sealing groove; 68, the second water distribution plate; 69, the second water inlet; 610, the second acid inlet; 611, the second waste acid port; 612, the second acid production port; 613, the second exhaust port; 614, the second flow port; 615, the membrane stack; 6151, the first clamping plate; 6152, the second clamping plate; 6153, the anion exchange membrane; 6154, the first flow channel; 6155, the second flow channel; 6156, the third flow channel; 6157, the fourth flow channel. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0043] Reference Figure 1-10 , a fast-changing membrane stack diffusion dialysis machine, comprising four supporting legs, wherein each two supporting legs form a group, and the two groups are divided into two groups, the upper surfaces of the two groups of supporting legs are fixedly connected with a fixing block 1, the upper surface of the fixing block 1 located on the left side of the supporting leg is fixedly installed with a pressure control mechanism, and the pressure control mechanism includes a fixed pressing plate 2, the lower surface of the fixed pressing plate 2 is fixedly connected to the upper surface of the fixing block 1 located on the left side of the supporting leg, and the upper surface of the fixing block 1 located on the right side of the supporting leg is fixedly connected with a C-shaped plate 3, the front and back sides of the fixed pressing plate 2 and the front and back sides of the C-shaped plate 3 are fixedly installed with partitions 4 by bolts, and the two partitions 4 are symmetrically distributed on the front and back sides of the fixed pressing plate 2;

[0044] The opposing surfaces of the two groups of supporting legs are fixedly connected to the symmetrically distributed support plates 5, and the upper surfaces of the two support plates 5 are provided with a quick-change mechanism, and the quick-change mechanism includes a first water distribution plate 6, and the lower surface of the first water distribution plate 6 is slidably connected to the upper surfaces of the two support plates 5. The first water distribution plate 6 is located on the leftmost side of the upper surface of the support plate 5, and the left side surface of the first water distribution plate 6 contacts the right side surface of the fixed clamping plate 2, and the front and back sides of the first water distribution plate 6 are slidably connected to the opposing inner surfaces of the two support plates 5 respectively.

[0045] like Figure 3As shown, further, a mounting groove 21 is opened at the center of the right side surface of the fixed clamping plate 2, and a pressure sensor 22 is fixedly installed at the center of the left side surface of the fixed clamping plate 2. The model of the pressure sensor 22 is MEACON brand MIK-P300. The detection end of the pressure sensor 22 extends to the left inner wall of the mounting groove 21 through a through hole, and a compression spring 23 is fixedly connected to the left inner wall of the mounting groove 21; the pressure sensor 22 is fixedly installed at the center of the left side surface of the fixed clamping plate 2 to detect the pressure of the mounting groove 21.

[0046] like Figure 3 As shown, by setting a compression spring 23 fixedly connected to the left inner wall of the installation groove 21, the compression spring 23 is set on the inner wall of the installation groove 21, so that the pressure block 25 and the pressure plate 24 sliding in the installation groove 21 have a self-resetting effect after losing external force extrusion.

[0047] like Figure 3 As shown, further, a free end of one end of the compression spring 23 is fixedly connected to a square-shaped pressing plate 24, and a sealing sleeve 213 is fixedly sleeved on the outer surface of the pressing plate 24. The sealing sleeve 213 is made of butyl rubber. The outer surface of the sealing sleeve 213 is slidably sleeved with the inner wall of the mounting groove 21. The left surface of the pressing plate 24 and the inner wall opposite to the mounting groove 21 form a piston cavity. The pressure sensor 22 detects the pressure in the piston cavity through the detection end of the pressure sensor 22. The sealing sleeve 213 seals the contact surface between the outer surface of the pressing plate 24 and the inner wall of the mounting groove 21. The right surface of the pressing plate 24 is fixedly connected to a pressing block 25. The outer surface of the pressing block 25 is octagonal in shape. The right surface of the pressing block 25 contacts the left surface of the first water distribution plate 6; the left surface of the pressing plate 24 and the inner wall opposite to the mounting groove 21 form a piston cavity. When the pressing block 25 is subjected to force, it makes a piston motion from right to left in the piston cavity, and then the increased pressure in the piston cavity is detected by the pressure sensor 22.

[0048] like Fig.11 and Fig.12 As shown, further, the pressure control mechanism also includes a mounting seat, which is located on one side of two supporting legs, and a servo motor 200 is fixedly mounted on the upper surface of the mounting seat, and the output shaft of the servo motor 200 is threadedly connected to a threaded rod 201 through a gear set, and one end surface of the threaded rod 201 is fixedly connected to a movable pressing plate 212;

[0049] Through the above technical solution, the bottom of the mounting base is connected to the ground.

[0050] like Figure 4As shown, further, the pressure control mechanism can also include a support block, the left side surface of the support block is fixedly connected to the right side surfaces of the two support legs located on the right side, and the upper surface of the support block is respectively provided with a moving cavity 26 and a placement cavity 27, the moving cavity 26 is located on the left side of the placement cavity 27, and the inner wall of the placement cavity 27 is fixedly connected with a driving motor 28, and the output shaft of the driving motor 28 is fixedly installed with a screw rod 29 through a coupling, and the outer surface of one end of the screw rod 29 is fixedly positioned at the axis center of the moving cavity 26 by the bearing and extends to the left inner wall of the moving cavity 26, and a heat dissipation hole is provided on the right inner wall of the placement cavity 27, and the right inner wall of the heat dissipation hole penetrates and extends to the center of the right surface of the support block; the heat dissipation hole is provided on the right inner wall of the placement cavity 27 to dissipate the heat generated by the driving motor 28 in the placement cavity 27.

[0051] like Figure 4 As shown, further, a moving block 210 is threadedly connected to the outer surface of one end of the screw rod 29, and the front and back surfaces of the moving block 210 are respectively slidably connected to the front inner wall and the rear inner wall of the moving cavity 26, and the upper surface of the moving block 210 is fixedly connected to an L-shaped block 211, and the inner surface of the L-shaped block 211 is fixedly connected to a reinforcing rib, and the left surface of the L-shaped block 211 is fixedly connected to a moving clamping plate 212; reinforcing ribs are arranged on the inner surface of the L-shaped block 211, so that when the L-shaped block 211 is subjected to force, the force applied to it is more stable due to the reinforcing ribs.

[0052] like Figure 5 As shown, further, the front of the first water distribution plate 6 is respectively provided with a first water inlet 61 and a first acid inlet 62, the first water inlet 61 is located above the first acid inlet 62, and the back of the first water distribution plate 6 is respectively provided with a first waste acid port 63 and a first acid production port 64;

[0053] like Figure 5 As shown, through the above technical solution, the opening positions of the first water inlet 61 and the first acid inlet 62 on the first water distribution plate 6 are limited.

[0054] like Figure 5 As shown, further, the first waste acid port 63 is located above the first acid production port 64, the upper surface of the first water distribution plate 6 is provided with first exhaust ports 65 which are symmetrically distributed, the right side surface of the first water distribution plate 6 is provided with first flow ports 66, and the four first flow ports 66 are distributed in a rectangular array on the right side surface of the first water distribution plate 6, and the right inner walls of the four first flow ports 66 are all provided with sealing grooves 67; the inner wall of the sealing groove 67 is provided with an O-ring.

[0055] like Figure 5As shown, further, the inner wall of the first water inlet 61 and the inner bottom wall of the first exhaust port 65 located at the front part of the upper surface of the first water distribution plate 6 are fixedly connected to the inner wall of the first flow port 66 located at the front part of the upper right end of the first water distribution plate 6, the inner wall of the first waste acid port 63 and the inner bottom wall of the first exhaust port 65 at the rear part of the upper surface of the first water distribution plate 6 are fixedly connected to the inner wall of the first flow port 66 located at the rear part of the upper right end of the first water distribution plate 6, the inner wall of the first acid inlet 62 is fixedly connected to the inner wall of the first flow port 66 located at the front part of the lower right end of the first water distribution plate 6, and the inner wall of the first acid production port 64 is fixedly connected to the inner wall of the first flow port 66 at the rear part of the lower right end of the first water distribution plate 6; the connections between the four first flow ports 66 and the first water inlet 61, the first acid inlet 62, the first waste acid port 63, the first acid production port 64 and the first exhaust port 65 are disclosed in detail.

[0056] like Figure 6 As shown, further, the quick replacement mechanism also includes a second water distribution plate 68, the materials of the first water distribution plate 6 and the second water distribution plate 68 are both UPVC or CPVC, the thickness range of the first water distribution plate 6 and the second water distribution plate 68 is 30-60MM, the front of the second water distribution plate 68 is respectively provided with a second water inlet 69 and a second acid inlet 610, the second water inlet 69 is located above the second acid inlet 610, the back of the second water distribution plate 68 is respectively provided with a second waste acid port 611 and a second acid production port 612, the second waste acid port 611 is located above the second acid production port 612, the upper surface of the second water distribution plate 68 is provided with second exhaust ports 613 which are symmetrically distributed, and the left surface of the second water distribution plate 68 is provided with second flow ports 61 distributed in a rectangular array. 4. The inner wall of the second water inlet 69 and the inner bottom wall of the second exhaust port 613 located at the front of the upper surface of the second water distribution plate 68 are fixedly connected with the inner wall of the second flow port 614 located at the rear of the upper left end of the second water distribution plate 68. The inner wall of the second waste acid port 611 and the inner bottom wall of the second exhaust port 613 at the rear of the upper surface of the second water distribution plate 68 are fixedly connected with the inner wall of the second flow port 614 located at the front of the upper left end of the second water distribution plate 68. The inner wall of the second acid inlet 610 is fixedly connected with the inner wall of the second flow port 614 located at the rear of the lower left end of the second water distribution plate 68. The inner wall of the second acid production port 612 is fixedly connected with the inner wall of the second flow port 614 at the front of the lower left end of the second water distribution plate 68. The hole depth of the first flow port 66 and the second flow port 614 is 30MM.

[0057] like Figure 6As shown, further, a plurality of membrane stacks 615 arranged in sequence are placed between the right side surface of the first water distribution plate 6 and the left side surface of the second water distribution plate 68, the lower surfaces of the plurality of membrane stacks 615 are slidably connected to the lower surface of the support plate 5, the front and back surfaces of the plurality of membrane stacks 615 are slidably connected to the surfaces opposite to the two partitions 4, respectively, and the number of membrane stacks 615 can be adjusted as needed, wherein a single membrane stack 615 specifically includes a first clamping plate 6151, a second clamping plate 6152, a plurality of anion exchange membranes 6153 and a connecting plate, the left side surface of the first clamping plate 6151 located on the leftmost side of the support plate 5 is connected to the right side surface of the first water distribution plate 6 The right side of the first clamping plate 6151 located at the rightmost side of the support plate 5 contacts the left side surface of the second water distribution plate 68, the right lower end surface of the first clamping plate 6151 is fixedly connected to the left side surface of the connecting plate, the right side surface of the connecting plate contacts the left side surface of the second clamping plate 6152, the adjacent first clamping plates 6151 and the second clamping plates 6152 are connected by bolt threads, a plurality of anion exchange membranes 6153 are located between the adjacent first clamping plates 6151 and the second clamping plates 6152, and the lower surfaces of the plurality of anion exchange membranes 6153 are all in contact with the upper surface of the connecting plate; the specific structure in the membrane stack 615 is disclosed in detail.

[0058] like Figure 2 As shown, by setting up a pressure control mechanism, the pressure sensor 22 installed on the left surface of the fixed clamping plate 2 can detect the pressure in the piston cavity. When the pressure in the piston cavity reaches a preset pressure value, it indicates that the first water distribution plate 6, multiple membrane stacks 615 and the second water distribution plate 68 are installed in place, thereby avoiding the first water distribution plate 6, multiple membrane stacks 615 and the second water distribution plate 68 from being damaged by excessive pressure.

[0059] like Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, further, the left surface of one of the first clamping plates 6151 is provided with first flow channels 6154 distributed in a rectangular array, the right surface of one of the first clamping plates 6151 is provided with second flow channels 6155 distributed in a symmetrical manner, the inner wall of the first flow channel 6154 is fixedly connected to the inner wall of the second flow channel 6155, the right surface of one of the second clamping plates 6152 is provided with third flow channels 6156 distributed in a rectangular array, the left surface of one of the first clamping plates 6151 is provided with fourth flow channels 6157 distributed in a symmetrical manner, the inner wall of the third flow channel 6156 is fixedly connected to the inner wall of the fourth flow channel 6157, and the first flow channel 6156 is located on the leftmost membrane stack 615 on the upper surface of the support plate 5. The inner wall of the first flow channel 6154 of the clamp 6151 and the inner wall of the first flow port 66 on the right side surface of the first water distribution plate 6 are sealed by an O-ring, the inner wall of the third flow channel 6156 of the second clamp 6152 in the leftmost membrane stack 615 on the upper surface of the support plate 5 and the inner wall of the first flow channel 6154 of the first clamp 6151 in the next membrane stack 615 are sealed by an O-ring, the adjacent membrane stacks 615 are connected in sequence, the inner wall of the third flow channel 6156 of the second clamp 6152 in the rightmost membrane stack 615 on the upper surface of the support plate 5 and the inner wall of the second flow port 614 on the left side surface of the second water distribution plate 68 are sealed by an O-ring, and the left side surface of the movable clamping plate 212 is in contact with the right side surface of the second water distribution plate 68.

[0060] like Figure 2 As shown, by setting up a quick replacement mechanism, the present invention designs two unique first water distribution plates 6 and second water distribution plates 68, all membrane stacks 615 are sandwiched between the two water distribution plates, and are connected to the first water distribution plate 6 and the second water distribution plate 68 through internal secret passages. There are no pipe connections on the membrane stacks 615, so that the membrane stacks 615 can be replaced without disassembling the pipes. The replacement time of the membrane stacks 615 is shortened from the original 2-4 hours to 5-10 minutes, thereby greatly improving the work efficiency.

[0061] Working principle: Step 1, installation, connect the four first flow ports 66 on the right side surface of the first water distribution plate 6 with the connection surface of the four first flow channels 6154 of the first clamping plate 6151 in the leftmost membrane stack 615 on the upper surface of the support plate 5 through an O-ring seal, connect the third flow channel 6156 of the second clamping plate 6152 in the leftmost membrane stack 615 on the upper surface of the support plate 5 with the connection surface of the first flow channel 6154 of the first clamping plate 6151 in the next membrane stack 615 through an O-ring seal, and the adjacent membrane stacks 615 are connected in sequence, and the third flow channel 6156 of the second clamping plate 6152 in the rightmost membrane stack 615 on the upper surface of the support plate 5 is sealed with the inner wall of the second flow port 614 on the left side surface of the second water distribution plate 68 through an O-ring seal;

[0062] Step 2: Quick replacement. When a membrane stack 615 in the diffusion dialysis machine is damaged and needs to be replaced during operation, the drive motor 28 is controlled to reverse and drive the screw rod 29 to move in the opposite direction, driving the moving block 210 connected to the surface of the screw rod 29 to slide from left to right on the inner wall of the moving chamber 26, driving the L-shaped block 211 connected to the upper surface of the moving block 210 and the moving clamping plate 212 connected to the left side surface of the L-shaped block 211 to slide from left to right between the opposite surfaces of the two partitions 4, taking out the membrane stack 615 to be replaced, replacing it with a new membrane stack 615, and starting the drive motor 28 again to drive the moving block 210 connected to the surface of the screw rod 29 to slide from right to left on the inner wall of the moving chamber 26, driving the L-shaped block 211 connected to the upper surface of the moving block 210 and the moving clamping plate 212 connected to the left side surface of the L-shaped block 211 The two partitions 4 slide from right to left between the opposite surfaces, and apply pressure to the right side surface of the second water distribution plate 68, so that the multiple membrane stacks 615, the first water distribution plate 6 and the second water distribution plate 68 slide from right to left between the opposite surfaces of the two partitions 4, so that the left side surface of the first water distribution plate 6 presses the right side surface of the pressure block 25, so that after the pressure block 25 is subjected to force, it drives the left side surface of the pressure block 25 connected to the pressure plate 24 and the sealing sleeve 213 sleeved on the outer surface of the pressure plate 24 to slide from right to left on the inner wall of the installation groove 21. At this time, the pressure in the piston cavity formed by the left side surface of the pressure plate 24 and the inner wall opposite to the installation groove 21 increases, and the pressure sensor 22 installed on the left side surface of the fixed clamping plate 2 detects the pressure in the piston cavity. When the pressure in the piston cavity reaches the preset pressure value, the control drive motor 28 stops working, and the diffusion dialysis machine runs again.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rapid-change membrane stack diffusion dialysis machine, comprising four support legs, characterized in that: Each two supporting legs form a group, and the two groups are divided into two groups. The upper surfaces of the two groups of supporting legs are fixedly connected with a fixed block (1). The upper surface of the fixed block (1) located on the left side of the supporting leg is fixedly installed with a pressure control mechanism, and the pressure control mechanism includes a fixed clamping plate (2). The lower surface of the fixed clamping plate (2) is fixedly connected to the upper surface of the fixed block (1) located on the left side of the supporting leg. The upper surface of the fixed block (1) located on the right side of the supporting leg is fixedly connected with a C-shaped plate (3). The front and back sides of the fixed clamping plate (2) and the front and back sides of the C-shaped plate (3) are fixedly installed with partitions (4) by bolts, and the two partitions (4) are symmetrically distributed on the front and back sides of the fixed clamping plate (2); The surfaces opposite to each other of the two groups of support legs are fixedly connected to symmetrically distributed support plates (5), the upper surfaces of the two support plates (5) are provided with a quick-change mechanism, and the quick-change mechanism comprises a first water distribution plate (6), the lower surface of the first water distribution plate (6) is slidably connected to the upper surfaces of the two support plates (5), the first water distribution plate (6) is located at the leftmost side of the upper surface of the support plate (5), the left surface of the first water distribution plate (6) is in contact with the right surface of the fixed pressing plate (2), and the front and back surfaces of the first water distribution plate (6) are respectively slidably connected to the opposite inner surfaces of the two support plates (5); A mounting groove (21) is provided at the center of the right side surface of the fixed pressing plate (2), a pressure sensor (22) is fixedly installed at the center of the left side surface of the fixed pressing plate (2), a detection end of the pressure sensor (22) extends through a through hole to the left inner wall of the mounting groove (21), and a compression spring (23) is fixedly connected to the left inner wall of the mounting groove (21); A free end of one end of the compression spring (23) is fixedly connected to a square-shaped pressing plate (24); a sealing sleeve (213) is fixedly sleeved on the outer surface of the pressing plate (24); the sealing sleeve (213) is made of butyl rubber; the outer surface of the sealing sleeve (213) is slidably sleeved with the inner wall of the mounting groove (21); the left side surface of the pressing plate (24) and the inner wall opposite to the mounting groove (21) form a piston cavity; the pressure sensor (22) detects the pressure in the piston cavity through the detection end of the pressure sensor (22); the sealing sleeve (213) seals the contact surface between the outer surface of the pressing plate (24) and the inner wall of the mounting groove (21); a pressing block (25) is fixedly connected to the right side surface of the pressing plate (24); the outer surface of the pressing block (25) is in an octagonal shape; the right side surface of the pressing block (25) contacts the left side surface of the first water distribution plate (6).

2. A rapid-change membrane stack diffusion dialysis machine according to claim 1, characterized in that: The pressure control mechanism further comprises a mounting seat, the mounting seat being located on one side of two of the supporting legs, a servo motor (200) being fixedly mounted on the upper surface of the mounting seat, an output shaft of the servo motor (200) being threadedly connected to a threaded rod (201) via a gear set, and a movable clamping plate (212) being fixedly connected to one end surface of the threaded rod (201).

3. A rapid-change membrane stack diffusion dialysis machine according to claim 2, characterized in that: The first water distribution plate (6) is provided with a first water inlet (61) and a first acid inlet (62) on the front side thereof, the first water inlet (61) being located above the first acid inlet (62), and the first waste acid inlet (63) and the first acid production inlet (64) on the back side thereof.

4. A rapid-change membrane stack diffusion dialysis machine according to claim 3, characterized in that: The first waste acid outlet (63) is located above the first acid production outlet (64); the upper surface of the first water distribution plate (6) is provided with first exhaust outlets (65) which are symmetrically distributed; the right side surface of the first water distribution plate (6) is provided with first flow outlets (66); four first flow outlets (66) are distributed in a rectangular array on the right side surface of the first water distribution plate (6); and the right inner walls of the four first flow outlets (66) are all provided with sealing grooves (67).

5. A rapid-change membrane stack diffusion dialysis machine according to claim 4, characterized in that: The inner wall of the first water inlet (61) and the inner bottom wall of the first exhaust port (65) located at the front of the upper surface of the first water distribution plate (6) are both fixedly connected to the inner wall of the first flow port (66) located at the front of the upper right end of the first water distribution plate (6); the inner wall of the first waste acid port (63) and the inner bottom wall of the first exhaust port (65) at the rear of the upper surface of the first water distribution plate (6) are both fixedly connected to the inner wall of the first flow port (66) located at the rear of the upper right end of the first water distribution plate (6); the inner wall of the first acid inlet (62) is fixedly connected to the inner wall of the first flow port (66) located at the front of the lower right end of the first water distribution plate (6); and the inner wall of the first acid generation port (64) is fixedly connected to the inner wall of the first flow port (66) at the rear of the lower right end of the first water distribution plate (6).

6. The rapid-change membrane stack diffusion dialysis machine according to claim 3, characterized in that: The quick-change mechanism further comprises a second water distribution plate (68). The thickness of the first water distribution plate (6) and the second water distribution plate (68) are both in the range of 30-60 mm. The front of the second water distribution plate (68) is respectively provided with a second water inlet (69) and a second acid inlet (610). The second water inlet (69) is located above the second acid inlet (610). The back of the second water distribution plate (68) is respectively provided with a second acid waste port (611) and a second acid production port (612). The second acid waste port (611) is located above the second acid production port (612). The upper surface of the second water distribution plate (68) is provided with second exhaust ports (613) distributed symmetrically. The left surface of the second water distribution plate (68) is provided with second flow ports (614) distributed in a rectangular array. The inner wall of the second water inlet (69) and the inner bottom wall of the second exhaust port (613) located at the front of the upper surface of the second water distribution plate (68) are fixedly connected to the inner wall of the second flow port (614) located at the rear of the upper left end of the second water distribution plate (68); the inner wall of the second waste acid port (611) and the inner bottom wall of the second exhaust port (613) at the rear of the upper surface of the second water distribution plate (68) are fixedly connected to the inner wall of the second flow port (614) located at the front of the upper left end of the second water distribution plate (68); the inner wall of the second acid inlet (610) is fixedly connected to the inner wall of the second flow port (614) located at the rear of the lower left end of the second water distribution plate (68); and the inner wall of the second acid generation port (612) is fixedly connected to the inner wall of the second flow port (614) at the front of the lower left end of the second water distribution plate (68).

7. A rapid-change membrane stack diffusion dialysis machine according to claim 6, characterized in that: A plurality of membrane stacks (615) are arranged in sequence between the right side surface of the first water distribution plate (6) and the left side surface of the second water distribution plate (68); the lower surfaces of the plurality of membrane stacks (615) are slidably connected to the lower surface of the support plate (5); the front and back surfaces of the plurality of membrane stacks (615) are slidably connected to the opposite surfaces of the two partitions (4), respectively; wherein a single membrane stack (615) specifically comprises a first clamping plate (6151), a second clamping plate (6152), a plurality of anion exchange membranes (6153) and a connecting plate; the left side surface of the first clamping plate (6151) located at the leftmost side of the support plate (5) and the right side surface of the first water distribution plate (6) are connected to each other. The first clamping plate (6151) located at the rightmost side of the support plate (5) contacts the left side surface of the second water distribution plate (68); the right side lower end surface of the first clamping plate (6151) is fixedly connected to the left side surface of the connecting plate; the right side surface of the connecting plate contacts the left side surface of the second clamping plate (6152); adjacent first clamping plates (6151) and second clamping plates (6152) are connected by bolt threads; a plurality of anion exchange membranes (6153) are located between adjacent first clamping plates (6151) and second clamping plates (6152); and the lower surfaces of the plurality of anion exchange membranes (6153) are all in contact with the upper surface of the connecting plate.

8. The rapid-change membrane stack diffusion dialysis machine according to claim 7, characterized in that: The left surface of one of the first clamping plates (6151) is provided with first flow channels (6154) distributed in a rectangular array, the right surface of one of the first clamping plates (6151) is provided with second flow channels (6155) distributed in a symmetrical manner, the inner wall of the first flow channel (6154) is fixedly connected to the inner wall of the second flow channel (6155), the right surface of one of the second clamping plates (6152) is provided with third flow channels (6156) distributed in a rectangular array, the left surface of one of the first clamping plates (6151) is provided with fourth flow channels (6157) distributed in a symmetrical manner, the inner wall of the third flow channel (6156) is fixedly connected to the inner wall of the fourth flow channel (6157), and the first clamping plate (6151) in the leftmost membrane stack (615) on the upper surface of the support plate (5) The inner wall of the first flow channel (6154) is sealed with the inner wall of the first flow port (66) on the right side surface of the first water distribution plate (6) by an O-ring, the inner wall of the third flow channel (6156) of the second clamping plate (6152) in the leftmost membrane stack (615) on the upper surface of the support plate (5) is sealed with the inner wall of the first flow channel (6154) of the first clamping plate (6151) in the next membrane stack (615) by an O-ring, the adjacent membrane stacks (615) are connected in sequence, the inner wall of the third flow channel (6156) of the second clamping plate (6152) in the rightmost membrane stack (615) on the upper surface of the support plate (5) is sealed with the inner wall of the second flow port (614) on the left side surface of the second water distribution plate (68) by an O-ring, and the left side surface of the movable clamping plate (212) is in contact with the right side surface of the second water distribution plate (68).

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