Quick connector, membrane stack and electrodialysis device

Abstract

The utility model discloses a quick connector, a membrane stack and an electrodialysis device, and belongs to the field of electrodialysis devices.The quick connector comprises a socket male head, a first matching groove is formed in one end of the socket male head, and a second matching groove is formed in the other end of the socket male head; one end of the socket female head is provided with a second matching groove and a third matching groove, and one end of the socket female head is sleeved outside one end of the socket male head, so that the first matching groove is communicated with the second matching groove and the third matching groove; the bolt comprises a main body part, and a first insertion rod and a second insertion rod which are connected with the main body part, a groove is formed in the first insertion rod, the first insertion rod is matched with the first matching groove and the second matching groove, and the second insertion rod is matched with the first matching groove and the third matching groove. The connecting structure has the technical effects that the connecting speed is high, and the connecting structure is not easy to loosen.

Description

Technical Field

[0001] The utility model relates to an electrodialysis device, in particular to a quick connector, a membrane stack and an electrodialysis device. Background Art

[0002] An electrodialysis device is a device that separates charged substances from a solution based on electrochemical principles under the action of a DC electric field.

[0003] The membrane stack is an important component of the electrodialysis device. The membrane stack generally includes an ion exchange membrane, a water distribution plate and multiple water pipes, and the water distribution plate and the multiple water pipes are connected by joints such as unions, flanges or bolts. However, joints such as unions, flanges or bolts require repeated rotation during connection, or tools are required to align and tighten the bolts, which can easily lead to slow connection speed. In addition, during long-term use, water leakage may occur as the threads or bolts loosen. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to provide a quick connector, which not only has a fast connection speed but also is not easy to loosen; another purpose of the utility model is to provide a membrane stack; another purpose of the utility model is to provide an electrodialysis device.

[0005] Technical solution:

[0006] A quick connector, comprising:

[0007] A socket male connector, one end of which is provided with a first matching groove;

[0008] A female socket connector, wherein a second mating groove and a third mating groove are provided at one end of the female socket connector, and one end of the female socket connector is sleeved onto an end of the male socket connector so that the first mating groove, the second mating groove, and the third mating groove are all connected;

[0009] The latch includes a main body, and a first plug rod and a second plug rod connected to the main body, a groove is provided in the first plug rod, the first plug rod cooperates with the first matching groove and the second matching groove, and the second plug rod cooperates with the first matching groove and the third matching groove.

[0010] Optionally, also include:

[0011] a step portion provided at one end of the female socket connector, the step portion being located in the second mating groove;

[0012] a first limiting protrusion and a second limiting protrusion, both of which are spaced apart and connected to the first insertion rod;

[0013] Wherein, the first limiting protrusion and the second limiting protrusion are respectively located at two ends of the step portion.

[0014] Optionally, the number of the third mating grooves and the number of the second insertion rods are both two, the two third mating grooves are axially symmetrically distributed about the second mating groove, the two second insertion rods are axially symmetrically distributed about the first insertion rod, and the two third mating grooves and the two second insertion rods are mated correspondingly.

[0015] Optionally, it further includes a third limiting protrusion connected to one end of the socket male head, and the third limiting protrusion abuts against one end of the socket female head.

[0016] Optionally, it further includes at least one sealing ring sleeved on one end of the male socket, and the side of the sealing ring away from the one end of the male socket contacts the inner wall of one end of the female socket.

[0017] Optionally, it further includes at least one receiving groove provided at one end of the socket male joint, and at least one sealing ring is correspondingly located in the at least one receiving groove.

[0018] A membrane stack, comprising a quick connector, and further comprising:

[0019] Membrane stack body;

[0020] A positive electrode water distribution plate and a negative electrode water distribution plate respectively connected to both sides of the membrane stack body;

[0021] a first water pipe unit connected to the positive electrode water distribution plate;

[0022] a second water pipe unit connected to the negative electrode water distribution plate;

[0023] Wherein, the first water pipe unit and the second water pipe unit are both connected to the other end of the female socket.

[0024] Optional,

[0025] The first water pipe unit includes a first acid outlet pipe, a first alkali outlet pipe, a first salt outlet pipe, a first salt inlet pipe, a first alkali inlet pipe and a first acid inlet pipe, all of which are connected to the positive electrode water distribution plate;

[0026] The second water pipe unit includes a second acid outlet pipe, a second alkali outlet pipe, a second salt outlet pipe, a second salt inlet pipe, a second alkali inlet pipe and a second acid inlet pipe, all of which are connected to the negative electrode water distribution plate;

[0027] Among them, the first acid outlet pipe, the first alkali outlet pipe, the first salt outlet pipe, the first salt inlet pipe, the first alkali inlet pipe, the first acid inlet pipe, the second acid outlet pipe, the second alkali outlet pipe, the second salt outlet pipe, the second salt inlet pipe, the second alkali inlet pipe and the second acid inlet pipe are all connected to the other end of the socket female joint.

[0028] Optionally, the membrane stack body includes a plurality of staggered ion exchange membranes and a plurality of partitions, the positive electrode water distribution plate is in contact with the outermost ion exchange membrane, and the negative electrode water distribution plate is in contact with the outermost partition.

[0029] An electrodialysis device includes a membrane stack.

[0030] Beneficial effects:

[0031] (1) The present application realizes the rapid disassembly of the socket male and socket female by means of the first insert rod, the second insert rod, the first matching groove, the second matching groove and the third matching groove, etc., and does not require repeated rotation during connection, and does not require the use of tools to simultaneously perform alignment and tighten bolts, thereby easily ensuring a fast connection speed;

[0032] (2) The main body is used to support the first plug rod and the second plug rod. The first plug rod is used to support the groove. The groove makes the first plug rod have a certain elasticity. Under the action of external force, the width of the first plug rod can change. In other words, when there is no external force, the width of the first plug rod remains unchanged, so that the first plug rod and the second matching groove are not easy to separate, and thus the quick connector of this embodiment is not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is an exploded view of a quick connector according to Example 1 of the present utility model;

[0034] Figure 2 This is one of the structural diagrams of a quick connector according to Example 1 of the present utility model;

[0035] Figure 3 This is a second structural diagram of a quick connector according to Example 1 of the present utility model;

[0036] Figure 4 for Figure 3 Cross-sectional view of middle AA;

[0037] Figure 5 This is a cross-sectional view of a socket male connector according to Example 1 of the present utility model;

[0038] Figure 6 This is a structural diagram of the latch of Example 1 of the present utility model;

[0039] Figure 7 This is one of the structural diagrams of a membrane stack according to Example 1 of the present utility model;

[0040] Figure 8 This is the second structural diagram of a membrane stack according to Example 1 of the present utility model;

[0041] Figure: 1, male socket; 11, first matching groove; 12, third limiting protrusion; 13, receiving groove; 2, female socket; 21, second matching groove; 22, third matching groove; 23, step; 3, latch; 31, first plug rod; 311, groove; 32, second plug rod; 33, main body; 34, first limiting protrusion; 35, second limiting protrusion; 4, sealing ring; 51, membrane stack body; 52, positive electrode water distribution plate; 53, negative electrode water distribution plate Plate; 61, first water pipe unit; 611, first acid outlet pipe; 612, first alkali outlet pipe; 613, first salt outlet pipe; 614, first salt inlet pipe; 615, first alkali inlet pipe; 616, first acid inlet pipe; 62, second water pipe unit; 621, second acid outlet pipe; 622, second alkali outlet pipe; 623, second salt outlet pipe; 624, second salt inlet pipe; 625, second alkali inlet pipe; 626, second acid inlet pipe. DETAILED DESCRIPTION

[0042] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Example 1

[0044] like Figure 1 , this embodiment provides a quick connector, including: a socket male head 1, one end of the socket male head 1 is provided with a first mating groove 11; a socket female head 2, one end of the socket female head 2 is provided with a second mating groove 21 and a third mating groove 22, one end of the socket female head 2 is sleeved on the outside of one end of the socket male head 1, so that the first mating groove 11 and the second mating groove 21 and the third mating groove 22 are all connected; a pin 3, the pin 3 includes a main body 33, and a first plug rod 31 and a second plug rod 32 both connected to the main body 33, a groove 311 is provided in the first plug rod 31, the first plug rod 31 is mated with the first mating groove 11 and the second mating groove 21, and the second plug rod 32 is mated with the first mating groove 11 and the third mating groove 22.

[0045] Specifically, during installation, first, bring the socket male head 1 and the socket female head 2 closer to each other along the axial direction until the first mating groove 11, the second mating groove 21 and the third mating groove 22 are connected; then, move the pin 3 closer to the socket male head 1 and the socket female head 2 in the radial direction until the first insertion rod 31 and the first mating groove 11 and the second mating groove 21 are mated, and the second insertion rod 32 and the first mating groove 11 and the third mating groove 22 are mated. During the mating process, the width of the groove 311 is first reduced and then restored; during disassembly, first, move the pin 3 radially away from the socket male head 1 and the socket female head The direction of the plug female head 2 moves, so that the width of the groove 311 is reduced, thereby reducing the width of the first plug rod 31, which facilitates the separation of the first plug rod 31 and the second matching groove 21. Then, the socket male head 1 and the socket female head 2 are separated from each other along the axial direction; in summary, this embodiment realizes the rapid disassembly of the socket male head 1 and the socket female head 2 through the first plug rod 31, the second plug rod 32, the first matching groove 11, the second matching groove 21 and the third matching groove 22. There is no need for repeated rotation during connection, and there is no need to use tools to align and tighten the bolts at the same time, which can easily ensure a fast connection speed.

[0046] Among them, the other end of the socket male connector 1 is used to connect with the relevant liquid storage device to facilitate water inlet and outlet. The material of the socket male connector 1 is preferably amorphous thermoplastic resin, i.e. UPVC; the other end of the socket female connector 2 is used to connect with the relevant membrane stack. The material of the socket female connector 2 is preferably amorphous thermoplastic resin, i.e. UPVC; the main body 33 is used to carry the first plug rod 31 and the second plug rod 32. The first plug rod 31 is used to carry the groove 311. The groove 311 facilitates the first plug rod 31 to have a certain elasticity. Under the action of external force, the width of the first plug rod 31 can change. In other words, when there is no external force, the width of the first plug rod 31 remains unchanged, so that the first plug rod 31 and the second matching groove 21 are not easy to separate, and thus the quick connector of this embodiment is not easy to loosen.

[0047] Further, such as Figure 4 , and also includes: a step portion 23 provided at one end of the socket female head 2, the step portion 23 is located in the second matching groove 21; a first limiting protrusion 34 and a second limiting protrusion 35 both connected to the first insertion rod 31 at intervals; wherein the first limiting protrusion 34 and the second limiting protrusion 35 are respectively located at both ends of the step portion 23.

[0048] Specifically, the step portion 23, the first limiting protrusion 34 and the second limiting protrusion 35 facilitate the radial limiting effect on the first insertion rod 31. When there is no external force, the width of the first insertion rod 31 remains unchanged, so that the first insertion rod 31 and the second matching groove 21 are not easy to separate, and the quick connector of this embodiment is not easy to loosen.

[0049] Further, such as Figure 1 and Figure 6 The number of third mating grooves 22 and the number of second insertion rods 32 are both two. The two third mating grooves 22 are axially symmetrically distributed about the second mating groove 21, and the two second insertion rods 32 are axially symmetrically distributed about the first insertion rod 31. The two third mating grooves 22 and the two second insertion rods 32 correspond to each other.

[0050] Specifically, the two third mating grooves 22 and the two second plug rods 32 facilitate good force symmetry of the socket male head 1, the socket female head 2 and the pin 3. Preferably, the first plug rod 31 and the two second plug rods 32 are preferably evenly distributed along the circumference, that is, the angle between the first plug rod 31 and the two second plug rods 32 and the axis line is 120°.

[0051] Further, such as Figure 2 , further comprising a third limiting protrusion 12 connected to one end of the socket male connector 1, the third limiting protrusion 12 abutting against one end of the socket female connector 2. Specifically, the third limiting protrusion 12 abuts against one end of the socket female connector 2, thereby improving the axial limiting performance of the socket male connector 1 and the socket female connector 2.

[0052] Further, such as Figure 1 and Figure 5 , further comprising at least one sealing ring 4 sleeved on one end of the male socket 1, with the side of the sealing ring 4 away from the end of the male socket 1 abutting against the inner wall of one end of the female socket 2. Specifically, the sealing ring 4 is used to enhance the sealing between one end of the male socket 1 and one end of the female socket 2. The diameter of the sealing ring 4 ranges from 1.5 to 2.5 mm, and the material of the sealing ring 4 can be fluororubber, ethylene propylene diene monomer (EPDM), etc. The number of the sealing ring 4 is at least one, and can be one, two, or three, etc.

[0053] Further, such as Figure 1 and Figure 5 , further comprising at least one receiving groove 13 provided at one end of the socket male connector 1, and at least one sealing ring 4 correspondingly located in the at least one receiving groove 13. Specifically, the receiving groove 13 is used to receive the sealing ring 4, and the number of the receiving groove 13 is at least one, and specifically can be one, two, or three.

[0054] like Figure 7 - Figure 8 This embodiment also provides a membrane stack, including a quick connector of this embodiment, and also includes: a membrane stack body 51; a positive electrode water distribution plate 52 and a negative electrode water distribution plate 53 respectively connected to the two sides of the membrane stack body 51; a first water pipe unit 61 connected to the positive electrode water distribution plate 52; a second water pipe unit 62 connected to the negative electrode water distribution plate 53; wherein the first water pipe unit 61 and the second water pipe unit 62 are both connected to the other end of the socket female joint 2.

[0055] Specifically, the membrane stack body 51 is used for separating charged substances from a solution under the action of a direct current electric field, and specifically can include an ion exchange membrane, a partition plate and the like; the positive water distribution plate 52 and the negative water distribution plate 53 are used together for supplying direct current, and simultaneously introducing and discharging raw water, fresh water and concentrated water; the first water pipe unit 61 facilitates water inlet and outlet of the positive water distribution plate 52, and the material of the first water pipe unit 61 is preferably amorphous thermoplastic resin, i.e. UPVC; the second water pipe unit 62 facilitates water inlet and outlet of the negative water distribution plate 53, and the material of the second water pipe unit 62 is preferably amorphous thermoplastic resin, i.e. UPVC; the first water pipe unit 61 and the second water pipe unit 62 are both preferably bonded to the other end of the socket female head 2 by glue.

[0056] Further, as shown in FIG. 1, Figure 7 Figure 8 The first water pipe unit 61 includes a first acid water outlet pipe 611, a first alkali water outlet pipe 612, a first salt water outlet pipe 613, a first salt water inlet pipe 614, a first alkali water inlet pipe 615 and a first acid water inlet pipe 616, all of which are connected to the positive water distribution plate 52; the second water pipe unit 62 includes a second acid water outlet pipe 621, a second alkali water outlet pipe 622, a second salt water outlet pipe 623, a second salt water inlet pipe 624, a second alkali water inlet pipe 625 and a second acid water inlet pipe 626, all of which are connected to the negative water distribution plate 53; and the first acid water outlet pipe 611, the first alkali water outlet pipe 612, the first salt water outlet pipe 613, the first salt water inlet pipe 614, the first alkali water inlet pipe 615, the first acid water inlet pipe 616, the second acid water outlet pipe 621, the second alkali water outlet pipe 622, the second salt water outlet pipe 623, the second salt water inlet pipe 624, the second alkali water inlet pipe 625 and the second acid water inlet pipe 626 are all in communication with the other end of the socket female head 2.

[0057] Further, as shown in FIG. 1, Figure 7 Figure 8 The membrane stack body 51 includes a plurality of ion exchange membranes and a plurality of partition plates arranged alternately, the positive water distribution plate 52 abuts against the outermost ion exchange membrane, and the negative water distribution plate 53 abuts against the outermost partition plate. Specifically, the ion exchange membrane is used for separating charged substances from a solution under the action of a direct current electric field, and specifically includes a cation exchange membrane and an anion exchange membrane; the partition plate is used for separating the cation exchange membrane and the anion exchange membrane, facilitating the formation of a water flow channel, and playing a role of water distribution and water collection.

[0058] The embodiment also provides an electrodialysis device including the membrane stack.

[0059] In operation, the membrane stack is installed on the BL3T-50-320 type electrodialysis device independently designed by the applicant, the number of membrane stacks is 8, and after checking, the related equipment can operate normally, the salt water uses 6% lithium sulfate, the flow rates of the salt water, the alkali solution and the acid solution are adjusted to 15-25 m 3 ​​ / h, use 4% sodium hydroxide for polar water, adjust the flow rate to 5-6m 3 / h or so, and the equipment pipeline pressure is controlled between 0.05-0.07 MPa. After running for a period of time, the joints are guaranteed to be leak-proof, and the lithium sulfate concentration of the brine is reduced to 1%. At the same time, 10% sulfuric acid and 5% lithium hydroxide are obtained, and lithium sulfate wastewater treatment is achieved. The recovered acid and alkali solutions can be used in other production processes, fully recovering resources.

[0060] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A quick connector, characterized in that: include: A socket male connector (1), wherein one end of the socket male connector (1) is provided with a first matching groove (11); A female socket head (2), one end of which is provided with a second mating groove (21) and a third mating groove (22); one end of the female socket head (2) is sleeved on the outside of one end of the male socket head (1), so that the first mating groove (11), the second mating groove (21) and the third mating groove (22) are all in communication; A latch (3), the latch (3) comprising a main body (33), and a first insertion rod (31) and a second insertion rod (32) both connected to the main body (33); a groove (311) is provided in the first insertion rod (31); the first insertion rod (31) is matched with the first matching groove (11) and the second matching groove (21); the second insertion rod (32) is matched with the first matching groove (11) and the third matching groove (22).

2. A quick connector according to claim 1, characterized in that: Also includes: a step portion (23) provided at one end of the female socket (2), the step portion (23) being located in the second fitting groove (21); a first limiting protrusion (34) and a second limiting protrusion (35) both of which are spaced apart and connected to the first insertion rod (31); The first limiting protrusion (34) and the second limiting protrusion (35) are respectively located at two ends of the step portion (23).

3. A quick connector according to claim 1, characterized in that: The number of the third matching grooves (22) and the number of the second insertion rods (32) are both two, the two third matching grooves (22) are axially symmetrically distributed with respect to the second matching groove (21), the two second insertion rods (32) are axially symmetrically distributed with respect to the first insertion rod (31), and the two third matching grooves (22) and the two second insertion rods (32) are correspondingly matched.

4. A quick connector according to any one of claims 1 to 3, characterized in that: It also includes a third limiting protrusion (12) connected to one end of the socket male head (1), and the third limiting protrusion (12) abuts against one end of the socket female head (2).

5. A quick connector according to any one of claims 1 to 3, characterized in that: It also includes at least one sealing ring (4) sleeved on one end of the male socket (1), and the side of the sealing ring (4) away from one end of the male socket (1) contacts the inner wall of one end of the female socket (2).

6. A quick connector according to claim 5, characterized in that: It also includes at least one receiving groove (13) provided at one end of the socket male head (1), and at least one sealing ring (4) is correspondingly located in the at least one receiving groove (13).

7. A membrane stack, characterized in that: A quick connector according to any one of claims 1 to 6, further comprising: Membrane stack body (51); A positive electrode water distribution plate (52) and a negative electrode water distribution plate (53) respectively connected to both sides of the membrane stack body (51); a first water pipe unit (61) connected to the positive electrode water distribution plate (52); a second water pipe unit (62) connected to the negative electrode water distribution plate (53); Wherein, the first water pipe unit (61) and the second water pipe unit (62) are both connected to the other end of the female socket (2).

8. A membrane stack according to claim 7, characterized in that: The first water pipe unit (61) includes a first acid outlet pipe (611), a first alkali outlet pipe (612), a first salt outlet pipe (613), a first salt inlet pipe (614), a first alkali inlet pipe (615), and a first acid inlet pipe (616), all of which are connected to the positive electrode water distribution plate (52); The second water pipe unit (62) includes a second acid outlet pipe (621), a second alkali outlet pipe (622), a second salt outlet pipe (623), a second salt inlet pipe (624), a second alkali inlet pipe (625), and a second acid inlet pipe (626), all of which are connected to the negative electrode water distribution plate (53); The first acid outlet pipe (611), the first alkali outlet pipe (612), the first salt outlet pipe (613), the first salt inlet pipe (614), the first alkali inlet pipe (615), the first acid inlet pipe (616), the second acid outlet pipe (621), the second alkali outlet pipe (622), the second salt outlet pipe (623), the second salt inlet pipe (624), the second alkali inlet pipe (625), and the second acid inlet pipe (626) are all connected to the other end of the female socket (2).

9. A membrane stack according to claim 7, characterized in that: The membrane stack body (51) includes a plurality of staggered ion exchange membranes and a plurality of partitions. The positive electrode water distribution plate (52) contacts the outermost ion exchange membrane, and the negative electrode water distribution plate (53) contacts the outermost partition.

10. An electrodialysis device, characterized in that: Comprising a membrane stack as described in any one of claims 7 to 9.

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