Outer frame structure of electrodialyzer

Abstract

The utility model relates to the technical field of electrodialyzers, in particular to an outer frame structure of an electrodialyzer, which comprises a front group of pressing plates, a rear group of pressing plates and screws penetrating through holes formed in the side edges of the two groups of pressing plates, nuts are screwed and sleeved at the ends of each group of screws, and linkage mechanisms are arranged on the pressing plates. The linkage mechanism is arranged to be used for synchronously linking the nuts on the multiple sets of screws on the pressing plate, convenient operation is achieved, and meanwhile the pressure uniformity of the pressing plate can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrodialyzers, in particular to an outer frame structure of an electrodialyzer. Background Art

[0002] The electrodialysis unit consists of a membrane stack, electrode plates and an outer frame. The outer frame is used to compress the membrane stack. It is generally composed of front and rear compression plates and multiple sets of screws connecting the front and rear compression plates. The compression state is regulated by screwing the nuts on each set of screws in turn. Since each set of nuts needs to be screwed independently, it not only makes the operation process cumbersome, but also easily causes the problem of uneven pressure.

[0003] This solution provides an outer frame structure of an electrodialyzer, which realizes the synchronous control of multiple sets of nuts through structural settings, which not only realizes convenient operation but also improves pressure uniformity. Utility Model Content

[0004] The utility model aims at at least solving the problem in the prior art that a large number of nuts on screw rods need to be operated independently.

[0005] This solution provides an outer frame structure of an electrodialysis cell, which is achieved by the following specific technical means: it includes two sets of front and rear pressure plates, and screws passing through holes opened on the sides of the two sets of pressure plates, each set of screws has a nut screwed onto the end, and a linkage mechanism is provided on the pressure plates, which is used to synchronously drive multiple sets of nuts to rotate.

[0006] Preferred technical solution one: The linkage mechanism includes a sleeve rotatably installed on the side of the pressure plate away from the membrane stack, each group of the sleeves surrounds a group of holes, and a gear is fixedly sleeved on the sleeve. A flexible rack is sleeved between multiple groups of gears on a group of pressure plates, and the flexible rack is simultaneously engaged with the multiple groups of gears on the pressure plate. The nut connector fixed on the sleeve fixes the nut on the screw.

[0007] Preferred technical solution two: the nut connector is fixed to the end of the sleeve shaft, the nut connector is an annular structure, and the inner wall is a polygon with the same shape and size as the outer wall of the nut for the nut to be inserted.

[0008] Preferred technical solution three: the inner diameter of the sleeve is smaller than the inner diameter of the nut.

[0009] Preferred technical solution four: the inner cavity height of the nut connector is smaller than the nut height.

[0010] Preferred technical solution five: the pressure plate is rotatably installed with a limit shaft between the two sets of screws, and the back side of the flexible rack bypasses the limit shaft when passing between the two adjacent sets of gears.

[0011] The above structure enables this solution to have the following beneficial effects:

[0012] 1. The linkage mechanism is used to synchronize the nuts on multiple sets of screws on the pressing plate, which not only makes the operation more convenient, but also improves the uniformity of the pressing plate pressure;

[0013] 2. Although the linkage mechanism can synchronize multiple sets of nuts, it can also be separated from the nuts to facilitate nut replacement;

[0014] 3. The use of gears and flexible racks enables the racks to maintain sufficient contact area between the flexible racks and gears on the basis of linking multiple sets of nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0017] Figure 2 This is a schematic diagram of the structure of the screw and nut of this solution;

[0018] Figure 3 This is a structural diagram of the pressure plate of this scheme;

[0019] Figure 4 This is a schematic diagram of the structure of the nut connector of this scheme.

[0020] Among them, 1. pressure plate, 2. screw, 3. nut, 4. linkage mechanism, 41. sleeve shaft, 42. gear, 43. flexible rack, 44. nut connector, 45. anti-slip layer, 5. limit shaft, 51. reel. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described 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; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 4The outer frame structure of the electrodialysis cell includes two front and rear groups of pressure plates 1 and screws 2 passing through holes opened in the sides of the two groups of pressure plates 1. The ends of each group of screws 2 are screwed with nuts 3, and a linkage mechanism 4 is provided on the pressure plate 1. The linkage mechanism 4 is used to synchronously drive multiple groups of nuts 3 to rotate. The linkage mechanism 4 includes a sleeve shaft 41 rotatably installed on the side of the pressure plate 1 away from the membrane stack. Each group of sleeve shafts 41 surrounds a group of holes. A gear 42 is fixedly sleeved on the sleeve shaft 41. A flexible rack 43 is sleeved between the multiple groups of gears 42 on a group of pressure plates 1. The flexible rack 43 simultaneously meshes with the multiple groups of gears 42 on the pressure plate 1. The technical effect of synchronously driving the rotation of the multiple groups of gears 42 is achieved by the rotation of the flexible rack 43, and the nut 3 on the screw 2 is fixed by fixing the nut connector 44 on the sleeve shaft 41, so that when the sleeve shaft 41 rotates, the nut 3 can be simultaneously linked to the rotation of the screw 2, so that the positions of the multiple groups of nuts 3 can be adjusted at the same time, which not only realizes convenient operation but also improves pressure uniformity.

[0023] See also Figure 1 and Figure 4 , the outer frame structure of the electrodialyzer, the nut connector 44 is fixed to the end of the sleeve shaft 41, the nut connector 44 is an annular structure, and the inner wall is a polygon with the same shape and size as the outer wall of the nut 3, so that the nut 3 can be inserted into the inner cavity of the nut connector 44, and the inner cavity of the nut connector 44 is coated with an anti-slip layer 45, which is used to increase the friction resistance between the nut 3 and the inner cavity wall of the nut connector 44 to prevent the nut 3 placed in the inner cavity of the nut connector 44 from easily slipping out;

[0024] The inner diameter of the sleeve 41 is smaller than the inner diameter of the nut, so that when the nut 3 is placed in the inner cavity of the nut connector 44, one end face contacts the end face of the sleeve 41, preventing the nut 3 from falling into the inner cavity of the sleeve 41. The inner cavity height of the nut connector 44 is smaller than the height of the nut 3, so that the nut 3 can only be partially placed in the inner cavity of the nut connector 44, making it convenient to take the nut 3 out or twist it with a tool.

[0025] See also Figure 1 and Figure 3 , the outer frame structure of the electrodialysis cell, the limiting shaft 5 is rotatably installed on the pressure plate 1 between the two sets of screws 2, and the back side of the flexible rack 43 bypasses the limiting shaft 5 when passing between the two adjacent sets of gears 42. A belt disk 51 is fixed on the limiting shaft 5, and the back side of the flexible rack 43 bypasses the belt disk 51. The smooth back surface of the flexible rack 43 contacts the belt disk 51. The limiting shaft 5 and the two adjacent sets of screws 2 are not on the same straight line. The setting of the limiting shaft 5 is used to increase the meshing contact area between the flexible rack 43 and the gear 42.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may 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. An outer frame structure of an electrodialyser, comprising two sets of front and rear pressure plates (1), and screws (2) passing through holes opened on the sides of the two sets of pressure plates (1), wherein the ends of each set of screws (2) are screwed with nuts (3), characterized in that: A linkage mechanism (4) is provided on the pressure plate (1), and the linkage mechanism (4) is used to synchronously drive multiple groups of nuts (3) to rotate.

2. The outer frame structure of an electrodialyser according to claim 1, characterized in that: The linkage mechanism (4) includes a sleeve (41) rotatably mounted on a side of the pressure plate (1) away from the membrane stack, each group of the sleeves (41) surrounds a group of holes, a gear (42) is fixedly sleeved on the sleeve (41), a flexible rack (43) is sleeved between the multiple groups of gears (42) on a group of pressure plates (1), and the flexible rack (43) is simultaneously engaged with the multiple groups of gears (42) on the pressure plate (1), and a fixed nut connector (44) on the sleeve (41) is used to fix the nut (3) on the screw (2).

3. The outer frame structure of an electrodialyser according to claim 2, characterized in that: The nut connector (44) is fixed to the end of the sleeve shaft (41). The nut connector (44) is an annular structure, and the inner wall is a polygon with the same shape and size as the outer wall of the nut (3).

4. The outer frame structure of an electrodialyser according to claim 3, characterized in that: The inner diameter of the sleeve shaft (41) is smaller than the inner diameter of the nut (3).

5. The outer frame structure of an electrodialyser according to claim 4, characterized in that: The inner cavity height of the nut connector (44) is smaller than the height of the nut (3).

6. The outer frame structure of an electrodialyser according to claim 3, characterized in that: The inner cavity of the nut connector (44) is coated with an anti-slip layer (45).

7. The outer frame structure of an electrodialyser according to claim 2, characterized in that: A limiting shaft (5) is rotatably mounted on the pressure plate (1) between the two sets of screw rods (2), and the flexible rack (43) bypasses the limiting shaft (5) on its back when passing between the two adjacent sets of gears (42).

8. The outer frame structure of an electrodialyser according to claim 7, characterized in that: The limiting axis (5) and the two adjacent groups of screw rods (2) are not on the same straight line.

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