CN217230956U - PEM (proton exchange membrane) electrolytic cell - Google Patents

Abstract

The utility model belongs to the technical field of the electrolysis bath, in particular to a PEM electrolysis bath, which comprises an electrolysis bath and a bottom plate, wherein the electrolysis bath is positioned right above the bottom plate, a PEM membrane with uniform thickness is arranged in the electrolysis bath, a plurality of groups of uniformly distributed telescopic columns are fixedly connected between the lower side wall of the electrolysis bath and the upper side wall of the bottom plate, each telescopic column is sleeved with a corresponding spring, two ends of each spring are fixedly connected with the lower side wall of the electrolysis bath and the upper side wall of the bottom plate respectively, a water supplementing device matched with the electrolysis bath is fixedly arranged above the bottom plate, the water supplementing device comprises a water storage tank and a water supplementing hose, the water storage tank is fixedly arranged above the bottom plate, the water supplementing hose is communicated with the water storage tank, and the water supplementing hose is inwards inserted into the electrolysis bath; the change of the whole weight before and after the reaction in the electrolytic cell is utilized to automatically and timely supplement pure water in the electrolytic cell, manual operation is not needed, and the normal operation of producing hydrogen by using the pure water in the electrolytic cell is ensured.

Description

PEM (proton exchange membrane) electrolytic cell

Technical Field

The utility model relates to an electrolysis trough technical field specifically is a PEM electrolysis trough.

Background

The electrolytic bath is composed of a bath body, an anode and a cathode, wherein the anode chamber and the cathode chamber are mostly separated by a diaphragm, the electrolytic bath is divided into an aqueous solution electrolytic bath, a fused salt electrolytic bath and a non-aqueous solution electrolytic bath according to the difference of electrolyte, when direct current passes through the electrolytic bath, oxidation reaction occurs at the interface of the anode and the solution, and reduction reaction occurs at the interface of the cathode and the solution, so as to prepare required products.

Current PEM electrolysis trough is along with the normal clear of pure water hydrogen manufacturing, and hydrogen is constantly collected, and the quality of pure water reduces in the electrolysis trough, thereby generally adopts the staff to observe in time to supply the pure water in the electrolysis trough among the prior art, if the staff negligence carelessly, leads to electrolysis trough electrolysis process's interruption easily, influences the efficiency of pure water hydrogen manufacturing.

In addition, disclose "pure water hydrogen manufacturing PEM electrolysis trough in patent publication No. CN214937843U, relate to electrolysis trough equipment technical field, including the electrolysis trough main part, the inside of electrolysis trough main part is equipped with a plurality of electrolysis unit cell main parts, the equal fixedly connected with sliding block of both sides casing of electrolysis unit cell main part, sliding block sliding connection is on the top casing of electrolysis trough main part" though it can fix a plurality of electrolysis unit cell, makes it can not separate when carrying out electrolysis hydrogen manufacturing to the pure water to guarantee the efficiency of electrolysis hydrogen manufacturing work, but when actual operation, all need stimulate the pull ring that corresponds when fixing to every unit cell, when needs fix multiunit cell, need repeatedly stimulate multiunit pull ring, it is comparatively inconvenient, there is the problem that unit cell installation effectiveness is low.

SUMMERY OF THE UTILITY MODEL

In order to make up the problem that workers in the prior art generally adopt the observation to timely supplement pure water to the electrolytic cell and easily cause interruption of the electrolytic process of the electrolytic cell if the workers carelessly fail, the utility model provides a PEM electrolytic cell.

The utility model provides a technical scheme that its technical problem adopted is: a PEM electrolytic cell comprises an electrolytic cell and a bottom plate, wherein the electrolytic cell is positioned right above the bottom plate, a layer of PEM membrane with uniform thickness is padded in the electrolytic cell, the lower side wall of the electrolytic cell is fixedly connected with the upper side wall of the bottom plate through a plurality of groups of uniformly distributed telescopic columns, each telescopic column is sleeved with a corresponding spring, two ends of each spring are respectively fixedly connected with the lower side wall of the electrolytic cell and the upper side wall of the bottom plate, and a water replenishing device matched with the electrolytic cell is fixedly arranged above the bottom plate;

the water replenishing device comprises a water storage tank and a water replenishing hose, the water storage tank is fixedly arranged above the base plate, the water replenishing hose is communicated with the water storage tank, the water replenishing hose is inserted into the electrolytic cell inwards, a water pump communicated with the water replenishing hose is fixedly arranged on the water storage tank, and an automatic water replenishing control device matched with the water pump is arranged at the center of the side wall of the base plate.

Preferably, automatic water supply controlling means includes a hollow section of thick bamboo and elastic switch, elastic switch is fixed to be set up at a hollow section of thick bamboo upper end inner wall, and elastic switch and water pump electric connection, vertical sliding connection has the stripper plate in the hollow section of thick bamboo, the fourth bar opening of position symmetry is seted up to hollow section of thick bamboo both sides, the pull rod that stripper plate both sides fixedly connected with corresponds, the pull rod runs through corresponding fourth bar opening and electrolysis trough downside wall fixed connection.

Preferably, a plurality of groups of unit groove main bodies which are uniformly distributed are placed in the electrolytic cell, the side wall of the electrolytic cell is provided with a sliding cavity matched with the unit groove main bodies, a sliding block is connected in the sliding cavity in a sliding manner, the inner wall of the electrolytic cell is provided with a third strip-shaped opening communicated with the sliding cavity, the side wall of the sliding block is fixedly provided with a third connecting rod, the third connecting rod outwards penetrates through the third strip-shaped opening and is fixedly connected with a corresponding clamping plate, the side wall of each clamping plate is abutted against the unit groove main body, the outer side wall of the electrolytic cell is provided with a second strip-shaped opening communicated with the sliding cavity, one end of the sliding block, far away from the third connecting rod, is fixedly connected with a second connecting rod, the second connecting rod outwards penetrates through the second strip-shaped opening, the outer side wall of the electrolytic cell is fixedly provided with a sliding rod, the sliding rod is positioned between the two second connecting rods, and is connected with a sliding sleeve in a sliding manner, every the second connecting rod is all articulated through the articulated mast that corresponds with the sliding sleeve, the sliding sleeve is kept away from the connecting strip of one end fixedly connected with position symmetry of articulated mast, the multiunit the common fixedly connected with rectangle strip of connecting strip, the fixed adjusting device who matches with two rectangle strips that is provided with in electrolysis trough one side.

Preferably, adjusting device includes hollow box and regulation pole, hollow box and electrolysis trough lateral wall pass through position symmetry's spliced pole fixed connection, it rotates with hollow box lateral wall to adjust the pole and is connected, and adjusts the inside first helical gear of hollow box lateral wall fixedly connected with that runs through of pole, the symmetry is provided with the second helical gear with first helical gear meshing in the hollow box, every the second helical gear all with hollow box inner end wall between all rotate through the threaded rod and be connected, threaded connection has the removal cover on the threaded rod, remove cover lateral wall fixedly connected with head rod, hollow box lateral wall is provided with the bar opening that matches with the head rod, the head rod outwards runs through bar opening and the rectangle strip fixed connection that corresponds.

Preferably, the sliding rod is provided with a limiting sliding groove matched with the sliding sleeve, and the inner wall of the sliding sleeve is provided with a limiting rectangular block matched with the limiting sliding groove.

Preferably, one end of the sliding rod, which is far away from the electrolytic bath, is fixedly connected with an anti-falling block, and the length of the anti-falling block is greater than the inner diameter of the sliding sleeve.

Preferably, the upper side wall of the bottom plate is fixedly provided with first limiting blocks with symmetrical positions, the inner wall of the upper end of the hollow cylinder is fixedly provided with second limiting blocks corresponding to the extrusion plate, and the second limiting blocks are arranged in an arc shape.

Preferably, a transparent observation window is embedded in one side of the water storage tank away from the electrolytic bath, and scale marks which are uniformly distributed are arranged on the transparent observation window.

The utility model discloses an useful part lies in:

1. along with the continuous operation of pure water hydrogen production in the electrolytic cell, the content of pure water in the electrolytic cell is reduced, the whole weight of the electrolytic cell is reduced, the originally compressed spring jacks up the electrolytic cell, the pull rod fixedly connected with the electrolytic cell drives the extrusion plate to extrude the elastic switch upwards, the water pump is started, and pure water in the water storage tank is pumped into the water supplementing hose by the water pump to enter the electrolytic cell, so that the automatic supply of the pure water in the electrolytic cell is completed, manual operation is not needed, and the normal operation of pure water hydrogen production in the electrolytic cell is ensured;

2. the regulation pole is adjusted in forward rotation, first helical gear passes through the second helical gear and drives the threaded rod rotation, it keeps away from each other with its threaded connection's removal cover drive head rod and rectangle strip, otherwise, the regulation pole is adjusted in the antiport, two rectangle strips are close to each other thereupon, keep away from through the rectangle strip and be close to the dismantlement and the fixing of driving splint and realizing the multiunit cell groove main part simultaneously, need not the staff and install every unit cell groove main part in proper order, the installation effectiveness of unit cell groove main part has been improved, the work efficiency of the pure water hydrogen manufacturing of electrolysis trough has been improved mutually in the change.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic view of an electrolytic cell and a cell body installation structure according to a first embodiment;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is a schematic view of the inner structure of the hollow box according to the first embodiment;

FIG. 5 is a schematic view of an installation structure of a water storage tank and an electrolytic bath according to the first embodiment;

FIG. 6 is a schematic view of the internal structure of the hollow cylinder according to the first embodiment;

fig. 7 is a schematic view of a structure of the second embodiment in which the cell slot main body and the clamping plate are engaged.

In the figure: the device comprises an electrolytic cell 1, a PEM (proton exchange membrane) 101, a bottom plate 2, a telescopic column 3, a spring 4, a first limiting block 5, a unit groove 6 main body, a clamping plate 7, a hollow box 8, a connecting column 9, an adjusting rod 10, a rectangular strip 11, a first connecting rod 12, a first strip-shaped opening 13, a sliding rod 14, a sliding sleeve 15, a limiting sliding groove 16, a connecting strip 17, an anti-dropping block 18, a sliding cavity 19, a sliding block 20, a second strip-shaped opening 21, a second connecting rod 22, a hinged rod 23, a third strip-shaped opening 24, a third connecting rod 25, a first helical gear 26, a second helical gear 27, a threaded rod 28, a movable sleeve 29, a water storage tank 30, a water replenishing hose 31, a water pump 32, a transparent observation window 33, a hollow cylinder 34, an extrusion plate 35, an elastic switch 36, a pull rod 37, a fourth strip-shaped opening 38, a second limiting block 39, a positioning bulge 40 and a positioning groove 41.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-6, a PEM electrolytic cell comprises an electrolytic cell 1 and a bottom plate 2, wherein the electrolytic cell 1 is positioned right above the bottom plate 2, a PEM membrane 101 with uniform thickness is arranged in the electrolytic cell 1, the PEM membrane 101 is a proton exchange membrane, the PEM membrane 101 works under high current density in the pure water hydrogen production process of the electrolytic cell 1, the size is small, the efficiency is high, the purity of the generated hydrogen can reach 99.999%, the high purity of the hydrogen produced by pure water can be effectively ensured, the lower side wall of the electrolytic cell 1 is fixedly connected with the upper side wall of the bottom plate 2 through a plurality of groups of uniformly distributed telescopic columns 3, each telescopic column 3 is sleeved with a corresponding spring 4, two ends of each spring 4 are respectively and fixedly connected with the lower side wall of the electrolytic cell 1 and the upper side wall of the bottom plate 2, and a water replenishing device matched with the electrolytic cell 1 is fixedly arranged above the bottom plate 2;

the water replenishing device comprises a water storage tank 30 and a water replenishing hose 31, wherein the water storage tank 30 is fixedly arranged above the base plate 2, one side of the water storage tank 30, which is far away from the electrolytic bath 1, is embedded with a transparent observation window 33, scale marks which are uniformly distributed are arranged on the transparent observation window 33, a worker can clearly know the content of pure water in the water storage tank 30 through the arrangement of the transparent observation window 33, so that the pure water is timely replenished into the water storage tank 30 through a liquid filling opening, the water replenishing hose 31 is communicated with the water storage tank 30, the water replenishing hose 31 is inwards inserted into the electrolytic bath 1, a water pump 32 communicated with the water replenishing hose 31 is fixedly arranged on the water storage tank 30, an automatic water replenishing control device matched with the water pump 32 is arranged at the center of the upper side wall of the base plate 2, the automatic water replenishing control device comprises a hollow cylinder 34 and an elastic switch 36, a first limiting block 5 which is in position symmetry is fixedly arranged on the upper side wall of the base plate 2, a second limiting block 39 corresponding to the extrusion plate 35 is fixedly arranged on the inner wall of the upper end of the hollow cylinder 34, and the second limit block 39 is set into arc shape, the first limit block 5 is set on the bottom plate 2, the maximum descending height of the electrolytic bath 1 can be limited, the spring 4 is prevented from being pressed too much and can not restore to the initial state, at the same time, the hollow cylinder 34 and the internal structure thereof are protected, the second limit block 39 can limit the maximum ascending height of the electrolytic bath 1, the electrolytic bath 1 is prevented from ascending too much, the extrusion plate 35 is driven to extrude the elastic switch 36, in the utility model, the elastic switch 36 and the water pump 32 belong to the well-established prior art, therefore, the working principle is not detailed, the elastic switch 36 is fixedly arranged on the inner wall of the upper end of the hollow cylinder 34, the elastic switch 36 is electrically connected with the water pump 32, the extrusion plate 35 is vertically connected in the hollow cylinder 34 in a sliding manner, the fourth opening 38 with symmetrical position is arranged on two sides of the hollow cylinder 34, the corresponding pull rod 37 is fixedly connected on two sides of the extrusion plate 35, the pull rod 37 penetrates through the corresponding fourth strip-shaped opening 38 and is fixedly connected with the lower side wall of the electrolytic bath 1; along with going on of pure water hydrogen manufacturing in the electrolysis trough 1 continuously, the content of pure water reduces in the electrolysis trough 1, the holistic weight reduction of electrolysis trough 1, spring 4 that originally compressed upwards jack-up electrolysis trough 1 thereupon, pull rod 37 with 1 fixed connection of electrolysis trough drives stripper plate 35 upwards extrusion elastic switch 36 thereupon, water pump 32 opens thereupon, pure water in the storage water tank 30 is by water pump 32 suction moisturizing hose 31 and then get into in the electrolysis trough 1, thereby accomplish the automatic supply to 1 interior pure water of electrolysis trough, need not the manual control, the normal clear water hydrogen manufacturing in 1 electrolysis trough has been ensured.

A plurality of groups of uniformly distributed unit cell main bodies 6 are placed in an electrolytic bath 1, the side wall of the electrolytic bath 1 is provided with a sliding cavity 19 matched with the unit cell main bodies 6, the sliding cavity 19 is connected with a sliding block 20 in a sliding way, the inner wall of the electrolytic bath 1 is provided with a third strip-shaped opening 24 communicated with the sliding cavity 19, the side wall of the sliding block 20 is fixedly provided with a third connecting rod 25, the third connecting rod 25 outwards penetrates through the third strip-shaped opening 24 and is fixedly connected with a corresponding clamping plate 7, the side wall of each group of clamping plates 7 is abutted against the unit cell main body 6, the outer side wall of the electrolytic bath 1 is provided with a second strip-shaped opening 21 communicated with the sliding cavity 19, one end of the sliding block 20 far away from the third connecting rod 25 is fixedly connected with a second connecting rod 22, the second connecting rod 22 outwards penetrates through the second strip-shaped opening 21 and is arranged, the outer side wall of the electrolytic bath 1 is fixedly provided with a sliding rod 14, the sliding rod 14 is positioned between the two second connecting rods 22, and the sliding sleeve 15 is connected on the sliding rod 14 in a sliding way, the sliding rod 14 is provided with a limiting sliding groove 16 matched with the sliding sleeve 15, the inner wall of the sliding sleeve 15 is provided with a limiting rectangular block matched with the limiting sliding groove 16, the sliding sleeve 15 can be limited by the matching of the limiting sliding groove 16 and the limiting rectangular block, the sliding sleeve 15 can move on the sliding rod 14 and can be prevented from rotating along the sliding rod 14, one end of the sliding rod 14, far away from the electrolytic bath 1, is fixedly connected with an anti-falling block 18, the length of the anti-falling block 18 is greater than the inner diameter of the sliding sleeve 15, the anti-falling block 18 is arranged, so that the sliding sleeve 15 can be prevented from falling off from the sliding rod 14 when the distance between the rectangular strips 11 is adjusted by the adjusting rod 10, inconvenience is caused for subsequent installation, each second connecting rod 22 is hinged with the sliding sleeve 15 through a corresponding hinged rod 23, one end of the sliding sleeve 15, far away from the hinged rod 23, is fixedly connected with connecting strips 17 with symmetrical positions, and a plurality of groups of connecting strips 17 are fixedly connected with the rectangular strips 11 together, one side of the electrolytic cell 1 is fixedly provided with an adjusting device matched with the two rectangular strips 11; forward rotation adjusts pole 10, first helical gear 26 drives threaded rod 28 through second helical gear 27 and rotates, the removal cover 29 with its threaded connection drives head rod 12 and rectangle strip 11 and keeps away from each other, otherwise, reverse rotation adjusts pole 10, first helical gear 26 drives threaded rod 28 reversal through second helical gear 27, two rectangle strips 11 are close to each other along with it, keep away from through rectangle strip 11 and be close to and drive splint 7 and realize dismantling and fixing multiunit cell main part 6 simultaneously, need not the staff and install unit cell main part 6 in proper order, the installation effectiveness of unit cell main part 6 has been improved.

The adjusting device comprises a hollow box 8 and an adjusting rod 10, the hollow box 8 is fixedly connected with the outer side wall of the electrolytic bath 1 through connecting columns 9 with symmetrical positions, the adjusting rod 10 is rotatably connected with the side wall of one side of the hollow box 8, the adjusting rod 10 penetrates through the side wall of the hollow box 8 inwards and is fixedly connected with a first helical gear 26, second helical gears 27 meshed with the first helical gears 26 are symmetrically arranged in the hollow box 8, each second helical gear 27 is rotatably connected with the inner end wall of the hollow box 8 through a threaded rod 28, a moving sleeve 29 is connected onto the threaded rod 28 in a threaded manner, the side wall of the moving sleeve 29 is fixedly connected with a first connecting rod 12, a first strip-shaped opening 13 matched with the first connecting rod 12 is arranged on the side wall of the hollow box 8, and the first connecting rod 12 penetrates through the first strip-shaped opening 13 outwards and is fixedly connected with a corresponding rectangular strip 11; the pole 10 is adjusted in the rotation, when rectangle strip 11 kept away from each other, sliding sleeve 15 drives two sliders 20 through hinge rod 23 and second connecting rod 22 and is close to each other in sliding chamber 19, third connecting rod 25 drives splint 7 that corresponds thereupon and accomplishes the location installation to unit cell main part 6, on the contrary, when rectangle strip 11 is close to each other, sliding sleeve 15 drives two sliders 20 through hinge rod 23 and second connecting rod 22 and keeps away from each other in sliding chamber 19, third connecting rod 25 drives splint 7 and keeps away from each other thereupon, alright dismantle the change to unit cell main part 6, when actual installation, only need adjust pole 10 through corotation or reversal and alright realize installation and dismantlement to unit cell main part 6, the installation effectiveness of unit cell main part 6 has been improved greatly, the hydrogen production work efficiency of the pure water of electrolysis trough 1 has been improved mutually in the change.

Example two

Please refer to fig. 7, a first comparative example, which is another embodiment of the present invention, a plurality of positioning protrusions 40 are fixedly disposed on one side of the clamping plate 7 close to the unit groove main body 6, and positioning grooves 41 matched with the positioning protrusions 40 are disposed on the unit groove main body 6, so that the positioning protrusions 40 and the positioning grooves 41 are used in cooperation, thereby improving the stability of the clamping plate 7 for mounting the unit groove main body 6, and ensuring that the clamping plate 7 does not move after being fixedly mounted on the unit groove main body 6.

The working principle is that along with the continuous production of pure water in the electrolytic cell 1, the content of pure water in the electrolytic cell 1 is reduced, the overall weight of the electrolytic cell 1 is reduced, the originally compressed spring 4 jacks up the electrolytic cell 1, the pull rod 37 fixedly connected with the electrolytic cell 1 drives the extrusion plate 35 to extrude the elastic switch 36 upwards, the water pump 32 is started, pure water in the water storage tank 30 is pumped into the water replenishing hose 31 by the water pump 32 and then enters the electrolytic cell 1, at the moment, the overall weight of the electrolytic cell 1 is increased, the electrolytic cell 1 extrudes the spring 4 downwards, the extrusion plate 35 does not extrude the elastic switch 36 any more, the elastic switch 36 controls the water pump 32 to be closed, and the water storage tank 30 stops filling water into the electrolytic cell 1;

the forward rotation adjusts pole 10, first helical gear 26 passes through second helical gear 27 and drives threaded rod 28 and rotate, the removal cover 29 rather than threaded connection drives first connecting rod 12 and rectangle strip 11 and keeps away from each other, sliding sleeve 15 drives two sliders 20 through hinge rod 23 and second connecting rod 22 and is close to each other in smooth chamber 19, third connecting rod 25 drives corresponding splint 7 thereupon and accomplishes the location installation to unit cell main part 6, otherwise, the reverse rotation adjusts pole 10, when rectangle strip 11 is close to each other, third connecting rod 25 drives splint 7 thereupon and keeps away from each other, alright dismantle the change to unit cell main part 6.

In the description of the present specification, reference to the description of "one embodiment," "an example," "a specific example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims (8)

1. A PEM electrolyzer, characterized by: the device comprises an electrolytic cell (1) and a bottom plate (2), wherein the electrolytic cell (1) is positioned right above the bottom plate (2), a PEM (proton exchange membrane) film (101) with uniform thickness is arranged in the electrolytic cell (1), the lower side wall of the electrolytic cell (1) is fixedly connected with the upper side wall of the bottom plate (2) through a plurality of groups of uniformly distributed telescopic columns (3), each telescopic column (3) is sleeved with a corresponding spring (4), two ends of each spring (4) are fixedly connected with the lower side wall of the electrolytic cell (1) and the upper side wall of the bottom plate (2) respectively, and a water replenishing device matched with the electrolytic cell (1) is fixedly arranged above the bottom plate (2);

the moisturizing device includes storage water tank (30) and moisturizing hose (31), storage water tank (30) are fixed to be set up in bottom plate (2) top, and moisturizing hose (31) and storage water tank (30) intercommunication, moisturizing hose (31) inwards insert in electrolysis trough (1), fixed mounting has water pump (32) with moisturizing hose (31) intercommunication on storage water tank (30), lateral wall center department is provided with the automatic water supply controlling means who matches with water pump (32) on bottom plate (2).

2. A PEM electrolyzer as recited in claim 1 wherein: automatic water supply controlling means includes hollow section of thick bamboo (34) and elastic switch (36), elastic switch (36) are fixed to be set up at hollow section of thick bamboo (34) upper end inner wall, and elastic switch (36) and water pump (32) electric connection, vertical sliding connection has stripper plate (35) in hollow section of thick bamboo (34), position symmetry's fourth bar opening (38) are seted up to hollow section of thick bamboo (34) both sides, pull rod (37) that stripper plate (35) both sides fixedly connected with corresponds, pull rod (37) run through corresponding fourth bar opening (38) and electrolysis trough (1) downside wall fixed connection.

3. A PEM electrolyzer as recited in claim 2 wherein: a plurality of groups of unit groove main bodies (6) which are uniformly distributed are placed in the electrolytic tank (1), a sliding cavity (19) matched with the unit groove main bodies (6) is formed in the side wall of the electrolytic tank (1), a sliding block (20) is connected in the sliding cavity (19) in a sliding mode, a third strip-shaped opening (24) communicated with the sliding cavity (19) is formed in the inner wall of the electrolytic tank (1), a third connecting rod (25) is fixedly arranged on the side wall of the sliding block (20), the third connecting rod (25) penetrates through the third strip-shaped opening (24) outwards to be fixedly connected with a corresponding clamping plate (7), each group of clamping plates (7) is abutted against the unit groove main bodies (6), a second strip-shaped opening (21) communicated with the sliding cavity (19) is formed in the outer side wall of the electrolytic tank (1), and a second connecting rod (22) is fixedly connected to one end, far away from the third connecting rod (25), of the sliding block (20), second connecting rod (22) outwards run through second bar opening (21) and set up, fixed slide bar (14) that is provided with of electrolysis trough (1) lateral wall, slide bar (14) are located between two second connecting rod (22), sliding connection has sliding sleeve (15) on slide bar (14), every second connecting rod (22) all are articulated through hinge bar (23) that correspond with sliding sleeve (15), connecting strip (17), the multiunit of one end fixedly connected with rigidity symmetry of hinge bar (23) is kept away from in sliding sleeve (15) the common fixedly connected with rectangle strip (11) of connecting strip (17), the fixed adjusting device who matches with two rectangle strips (11) that is provided with in electrolysis trough (1) one side.

4. A PEM electrolyser as claimed in claim 3 wherein: the adjusting device comprises a hollow box (8) and an adjusting rod (10), the hollow box (8) is fixedly connected with the outer side wall of the electrolytic tank (1) through connecting columns (9) with symmetrical positions, the adjusting rod (10) is rotatably connected with the side wall of one side of the hollow box (8), the adjusting rod (10) penetrates through the side wall of the hollow box (8) inwards and is fixedly connected with a first helical gear (26), second helical gears (27) meshed with the first helical gears (26) are symmetrically arranged in the hollow box (8), each second helical gear (27) is rotatably connected with the inner end wall of the hollow box (8) through a threaded rod (28), a moving sleeve (29) is connected onto the threaded rod (28) in a threaded manner, a first connecting rod (12) is fixedly connected onto the side wall of the moving sleeve (29), a first strip-shaped opening (13) matched with the first connecting rod (12) is arranged on the side wall of the hollow box (8), the first connecting rod (12) penetrates through the first strip-shaped opening (13) outwards and is fixedly connected with the corresponding rectangular strip (11).

5. A PEM electrolyzer as recited in claim 4 wherein: the sliding rod (14) is provided with a limiting sliding groove (16) matched with the sliding sleeve (15), and the inner wall of the sliding sleeve (15) is provided with a limiting rectangular block matched with the limiting sliding groove (16).

6. A PEM electrolyzer as recited in claim 5 wherein: one end of the sliding rod (14) far away from the electrolytic cell (1) is fixedly connected with an anti-falling block (18), and the length of the anti-falling block (18) is larger than the inner diameter of the sliding sleeve (15).

7. A PEM electrolyzer as recited in claim 6 wherein: the bottom plate (2) is provided with the fixed first stopper (5) that is provided with the rigidity symmetry of lateral wall, the fixed second stopper (39) that are provided with stripper plate (35) corresponding of hollow section of thick bamboo (34) upper end inner wall, and second stopper (39) set to the arc.

8. A PEM electrolyser as claimed in claim 7 wherein: one side of the water storage tank (30) far away from the electrolytic bath (1) is embedded with a transparent observation window (33), and the transparent observation window (33) is provided with scale marks which are uniformly distributed.

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