PH electrode flow cell

Abstract

The utility model relates to the technical field of pH value detection, and discloses a pH electrode flow cell. Wherein the pH electrode flow cell comprises a flow cell main body, a pH electrode and a connecting piece. The flow cell main body is provided with a detection chamber, and the first end of the flow cell main body is provided with a threaded hole communicated with the detection chamber; one end of the pH electrode extends into the detection chamber, and the pH electrode is in threaded connection with the threaded hole; the connecting piece is connected to the first end of the flow cell main body and is provided with a connecting hole, and the connecting hole is configured to be connected to external equipment through a fastener. The pH electrode flow cell is connected to the external equipment through the fastener, so that the assembly difficulty is reduced, the assembly cost is reduced, the assembly efficiency is improved, the pH electrode is not influenced, in addition, the flow cell main body can be discarded when being used, the cost is low, and the flow cell main body with the pipe diameter of the corresponding specification can be customized according to the production scale. During working, the detection end of the pH electrode can detect the pH value of liquid in the detection chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of pH value detection, in particular to a pH electrode circulation pool. Background Art

[0002] In the field of biopharmaceuticals or chemical preparations, pH electrodes are often used to detect the pH value of the mobile phase, and the protection of the pH electrode is crucial. Currently, the pH electrode flow cell on the market plays a good protective role for the pH electrode to varying degrees, but in the prior art, the flow cell is welded on the external equipment. On the one hand, during the welding process, the pH electrode is easily damaged by impact during the welding process. On the other hand, when the flow cell needs to be replaced, it is necessary to perform complex processes such as cutting and welding on the flow cell, and it is not convenient to fix the flow cell on the tested equipment.

[0003] Based on this, there is an urgent need for a pH electrode circulation cell to solve the above-mentioned problems. Utility Model Content

[0004] Based on the above, the purpose of the utility model is to provide a pH electrode circulation cell, which reduces assembly cost, improves assembly efficiency, and can be quickly installed on external equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pH electrode flow cell, comprising:

[0007] A flow cell body, which is provided with a detection chamber, wherein a first end of the flow cell body is provided with a threaded hole communicating with the detection chamber;

[0008] A pH electrode, one end of which extends into the detection chamber, and the pH electrode is threadedly connected to the threaded hole;

[0009] The connecting piece is connected to the first end of the circulation pool body, and the connecting piece is provided with a connecting hole, and the connecting hole is configured to be connected to an external device through a fastener.

[0010] As an optimal technical solution for a pH electrode circulation pool, it also includes a protective cover, the protective cover is provided with a first through hole for the pH electrode to pass through, the end face of the first end of the circulation pool body is provided with a boss, the connecting piece is provided with a second through hole, the boss is passed through the second through hole, the protective cover is sleeved and connected to the boss, so that the protective cover and the end face of the circulation pool body clamp the connecting piece.

[0011] As a preferred technical solution for a pH electrode circulation pool, the side wall spacer ring of the boss is provided with a plurality of first limiting protrusions, the protective cover is provided with a connecting groove, the first through hole is located at the bottom of the connecting groove, and the inner wall spacer ring of the connecting groove is provided with a plurality of second limiting protrusions, when the boss extends into the connecting groove, the second limiting protrusion can pass through the gap between the adjacent first limiting protrusions and rotate to the side of the first limiting protrusion away from the second through hole; the bottom of the connecting groove abuts against the end face of the boss.

[0012] As a preferred technical solution for a pH electrode circulation cell, a first guiding slope is provided on a side of the first limiting boss away from the second through hole, and the first guiding slope is used to guide the second limiting boss.

[0013] As a preferred technical solution for a pH electrode circulation pool, a limit pin is provided at the bottom of the connecting groove, and the limit pin can penetrate the gap adjacent to the first limit protrusion. When the second limit protrusion rotates to the side of the first limit protrusion away from the second through hole, the limit pin stops the first limit protrusion.

[0014] As a preferred technical solution for a pH electrode circulation cell, the protective cover and the connecting piece are integrally formed.

[0015] As a preferred technical solution for a pH electrode circulation cell, the protective cover and the circulation cell body are made of plastic or stainless steel.

[0016] As a preferred technical solution for a pH electrode circulation cell, a liquid inlet is provided at one end of the detection chamber away from the threaded hole, and a liquid outlet is provided on a side wall of the detection chamber.

[0017] As a preferred technical solution for a pH electrode circulation cell, the liquid inlet and the liquid outlet are both provided with a transition part, the outer wall of the transition part is provided with a snap-fit ​​flange, and the diameter of the snap-fit ​​flange gradually decreases in the direction away from the detection chamber.

[0018] As an optimal technical solution for a pH electrode circulation pool, a third through hole is provided at one end of the threaded hole close to the detection chamber, the diameter of the third through hole is smaller than the minor diameter of the threaded hole, a first inclined surface is provided between the third through hole and the threaded hole, and the pH electrode is provided with a sealing ring, which is crimped to the first inclined surface.

[0019] The beneficial effects of the utility model are:

[0020] The utility model provides a pH electrode circulation pool. During assembly, the detection end of the pH electrode is extended into the detection chamber of the circulation pool body, and the pH electrode is threadedly connected to the threaded hole, thereby realizing a detachable connection between the pH electrode and the circulation pool body, and the circulation pool body plays a protective role for the pH electrode; finally, a connecting piece is connected to the first end of the circulation pool body, and the connecting hole of the connecting piece is connected to an external device through a fastener, thereby realizing a quick installation of the pH electrode circulation pool on the external device, and the operation is simple. In the utility model, the pH electrode circulation pool is connected to the external device through a fastener, which reduces the assembly difficulty and assembly cost, improves the assembly efficiency, and does not affect the pH electrode, and furthermore, the circulation pool body can be used and discarded, with low cost, and the circulation pool body of corresponding specifications and diameters can also be customized according to the production scale. During operation, the detection end of the pH electrode can detect the pH value of the liquid in the detection chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of a pH electrode circulation cell provided by a specific embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional view of a pH electrode circulation cell provided by a specific embodiment of the utility model;

[0024] Figure 3 yes Figure 2 A magnified view at point A;

[0025] Figure 4 It is a structural exploded diagram of a pH electrode circulation cell provided by a specific embodiment of the utility model;

[0026] Figure 5 It is a bottom view of the protective cover provided by the specific implementation mode of the utility model.

[0027] The following are marked in the figure:

[0028] 1. Circulation cell body; 11. Detection chamber; 12. Threaded hole; 13. Liquid inlet; 14. Liquid outlet; 15. Adapter; 151. Snap-fit ​​flange; 152. Anti-slip portion; 16. Third through hole; 17. First inclined surface; 18. Boss; 181. First limit protrusion; 182. First guide inclined surface;

[0029] 2. pH electrode; 21. Sealing ring;

[0030] 3. Connecting piece; 31. Connecting hole; 32. Second through hole;

[0031] 4. Protective cover; 41. Connecting groove; 42. Groove bottom; 43. First through hole; 44. Second limiting protrusion; 45. Limiting pin. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] like Figure 1-Figure 3As shown, this embodiment provides a pH electrode flow cell, which includes a flow cell body 1, a pH electrode 2 and a connector 3. Specifically, the flow cell body 1 is provided with a detection chamber 11, and a first end of the flow cell body 1 is provided with a threaded hole 12 communicating with the detection chamber 11; one end of the pH electrode 2 extends into the detection chamber 11, and the pH electrode 2 is threadedly connected to the threaded hole 12; the connector 3 is connected to the first end of the flow cell body 1, and the connector 3 is provided with a connection hole 31, and the connection hole 31 is configured to be connected to an external device through a fastener.

[0037] During assembly, the detection end of the pH electrode 2 is extended into the detection chamber 11 of the circulation cell body 1, and the pH electrode 2 is threadedly connected to the threaded hole 12, so that the pH electrode 2 and the circulation cell body 1 are detachably connected, and the circulation cell body 1 protects the pH electrode 2; finally, the connector 3 is connected to the first end of the circulation cell body 1, and the connection hole 31 of the connector 3 is connected to the external device through a fastener, so that the pH electrode 2 circulation cell is quickly installed on the external device, and the operation is simple. In this embodiment, the pH electrode circulation cell is connected to the external device through a fastener, which reduces the assembly difficulty and assembly cost, improves the assembly efficiency, and does not affect the pH electrode 2. Moreover, the circulation cell body 1 can be used and thrown away, with low cost, and the circulation cell body 1 of corresponding specifications and diameters can also be customized according to the production scale. When working, the detection end of the pH electrode 2 can detect the pH value of the liquid in the detection chamber 11. In other embodiments, the pH electrode 2 can also be CT conductivity.

[0038] Preferably, if Figure 3-Figure 5 As shown, a third through hole 16 is provided at one end of the threaded hole 12 close to the detection chamber 11, the diameter of the third through hole 16 is smaller than the minor diameter of the threaded hole 12, a first inclined surface 17 is provided between the third through hole 16 and the threaded hole 12, and a sealing ring 21 is provided on the pH electrode 2, which is crimped on the first inclined surface 17 to achieve sealing between the pH electrode 2 and the circulation pool body 1.

[0039] Further, the pH electrode circulation cell further comprises a protective cover 4, the protective cover 4 is provided with a first through hole 43 for the pH electrode 2 to pass through, the end surface of the first end of the circulation cell body 1 is provided with a boss 18, the connector 3 is provided with a second through hole 32, the boss 18 is passed through the second through hole 32, the protective cover 4 is sleeved and connected to the boss 18, so that the protective cover 4 and the end surface of the circulation cell body 1 clamp the connector 3. During assembly, the connector 3 is sleeved on the boss 18 through the second through hole 32, and then the pH electrode 2 passes through the first through hole 43, the protective cover 4 is sleeved and connected to the boss 18, so that the protective cover 4 and the end surface of the circulation cell body 1 clamp the connector 3, and the connector 3 is fixed to the first end of the circulation cell body 1. In this embodiment, the connector 3 is L-shaped, with the second through hole 32 provided on one side wall and the connection hole 31 provided on the other side wall.

[0040] Preferably, the side wall spacer ring of the boss 18 is provided with a plurality of first limiting protrusions 181, the protective cover 4 is provided with a connecting groove 41, the first through hole 43 is located at the groove bottom 42 of the connecting groove 41, and the inner wall spacer ring of the connecting groove 41 is provided with a plurality of second limiting protrusions 44. When the boss 18 extends into the connecting groove 41, the second limiting protrusion 44 can pass through the gap between adjacent first limiting protrusions 181 and rotate to the side of the first limiting protrusion 181 away from the second through hole 32; the groove bottom 42 of the connecting groove 41 abuts against the end face of the boss 18, and the end face of the boss 18 and the side of the first limiting protrusion 181 away from the second through hole 32 limit the movement of the protective cover 4 relative to the boss 18, thereby realizing a fixed connection between the protective cover 4 and the boss 18.

[0041] Further preferably, a first guiding inclined surface 182 is provided on a side of the first limiting protrusion 181 away from the second through hole 32, and the first guiding inclined surface 182 is used to guide the second limiting protrusion 44. Guided by the first guiding inclined surface 182, the second limiting protrusion 44 is convenient to rotate to the side of the first limiting protrusion 181 away from the second through hole 32, thereby preventing the second limiting protrusion 44 and the first limiting protrusion 181 from interfering with each other.

[0042] Preferably, a limit pin 45 is provided at the bottom 42 of the connecting groove 41, and the limit pin 45 can pass through the gap between the adjacent first limit protrusions 181. When the second limit protrusion 44 rotates to the side of the first limit protrusion 181 away from the second through hole 32, the limit pin 45 stops the first limit protrusion 181 to remind the operator that the protective cover 4 is rotated into place, thereby improving the connection reliability and increasing the convenience of operation.

[0043] In other embodiments, the protective cover 4 and the connecting member 3 may be an integrally formed structure.

[0044] Furthermore, the protective cover 4 and the circulation cell body 1 are made of plastic or stainless steel, which is corrosion-resistant and prevents the liquid being tested from corroding. The plastic may be acrylic or PVC (Polyvinyl Chloride).

[0045] In this embodiment, Figure 1 and Figure 2 As shown, a liquid inlet 13 is provided at one end of the detection chamber 11 away from the threaded hole 12, and a liquid outlet 14 is provided on the side wall of the detection chamber 11. During detection, liquid enters the detection chamber 11 through the liquid inlet 13 and can be discharged through the liquid outlet 14, so that the pH electrode 2 can detect the pH value of the liquid.

[0046] Furthermore, both the liquid inlet 13 and the liquid outlet 14 are provided with an adapter 15, and the outer wall of the adapter 15 is provided with a clamping flange 151, and the diameter of the clamping flange 151 gradually decreases in the direction away from the detection chamber 11. Among them, the adapter 15 is used to connect a hose, and the hose is inserted through the end with a smaller diameter of the clamping flange 151 to reduce the difficulty of assembly. In this embodiment, the two adapters 15 are integrally formed with the circulation cell body 1, and there is no need to worry about the surface cleanliness of the inlet and outlet formed by welding of the traditional circulation cell.

[0047] Further preferably, the clamping flange 151 is provided with an anti-slip portion 152 on the side close to the detection chamber 11, and the anti-slip portion 152 is surrounded by a plurality of waist-shaped bosses. When the hose is sleeved onto the anti-slip portion 152, it is tightened with a cable tie. The waist-shaped bosses increase the friction between the hose and the adapter 15, thereby improving the connection reliability of the hose.

[0048] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A pH electrode flow cell, characterized in that: include: A circulation cell body (1) is provided with a detection chamber (11), and a first end of the circulation cell body (1) is provided with a threaded hole (12) communicating with the detection chamber (11); A pH electrode (2), one end of which extends into the detection chamber (11), and the pH electrode (2) is threadedly connected to the threaded hole (12); A connecting piece (3) is connected to the first end of the circulation pool body (1), and the connecting piece (3) is provided with a connecting hole (31), and the connecting hole (31) is configured to be connected to an external device through a fastener.

2. The pH electrode flow cell according to claim 1, characterized in that: The invention also comprises a protective cover (4), wherein the protective cover (4) is provided with a first through hole (43) for the pH electrode (2) to pass through, the end surface of the first end of the circulation cell body (1) is provided with a boss (18), the connecting piece (3) is provided with a second through hole (32), the boss (18) is passed through the second through hole (32), and the protective cover (4) is sleeved on and connected to the boss (18), so that the protective cover (4) and the end surface of the circulation cell body (1) clamp the connecting piece (3).

3. The pH electrode flow cell according to claim 2, characterized in that: The side wall spacer ring of the boss (18) is provided with a plurality of first limiting protrusions (181); the protective cover (4) is provided with a connecting groove (41); the first through hole (43) is located at the groove bottom (42) of the connecting groove (41); the inner wall spacer ring of the connecting groove (41) is provided with a plurality of second limiting protrusions (44); when the boss (18) extends into the connecting groove (41), the second limiting protrusion (44) can pass through the gap between the adjacent first limiting protrusions (181) and rotate to the side of the first limiting protrusion (181) away from the second through hole (32); the groove bottom (42) of the connecting groove (41) abuts against the end face of the boss (18).

4. The pH electrode flow cell according to claim 3, characterized in that: A first guiding inclined surface (182) is provided on a side of the first limiting protrusion (181) away from the second through hole (32), and the first guiding inclined surface (182) is used to guide the second limiting protrusion (44).

5. The pH electrode flow cell according to claim 3, characterized in that: A limit pin (45) is provided at the bottom (42) of the connecting groove (41), and the limit pin (45) can penetrate the gap between the adjacent first limit protrusions (181). When the second limit protrusion (44) rotates to the side of the first limit protrusion (181) away from the second through hole (32), the limit pin (45) stops the first limit protrusion (181).

6. The pH electrode flow cell according to claim 2, characterized in that: The protective cover (4) and the connecting member (3) are integrally formed.

7. The pH electrode flow cell according to claim 2, characterized in that: The protective cover (4) and the circulation pool body (1) are made of plastic or stainless steel.

8. The pH electrode flow cell according to claim 1, characterized in that: A liquid inlet (13) is provided at one end of the detection chamber (11) away from the threaded hole (12), and a liquid outlet (14) is provided on the side wall of the detection chamber (11).

9. The pH electrode flow cell according to claim 8, characterized in that: The liquid inlet (13) and the liquid outlet (14) are both provided with a transition portion (15), and the outer wall of the transition portion (15) is provided with a clamping flange (151), and the diameter of the clamping flange (151) gradually decreases in a direction away from the detection chamber (11).

10. The pH electrode flow cell according to claim 1, characterized in that: A third through hole (16) is provided at one end of the threaded hole (12) close to the detection chamber (11); the diameter of the third through hole (16) is smaller than the minor diameter of the threaded hole (12); a first inclined surface (17) is provided between the third through hole (16) and the threaded hole (12); and the pH electrode (2) is provided with a sealing ring (21), and the sealing ring (21) is crimped onto the first inclined surface (17).

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