Online pH detection device

Abstract

The utility model discloses an on-line pH detection device which comprises a reaction tank and a detection pool, and the reaction tank is communicated with the detection pool through a circulating pipeline. A detachable top cover is arranged above the detection pool, a convex pipe is arranged on the top cover, a detachable clamping sleeve is arranged in the convex pipe, a lifting detection mechanism is arranged right above the clamping sleeve, and the lifting detection mechanism is fixedly connected with the detection pool through a fixing frame. In the using process of the device, the surface of the pH meter is cleaned in a scraping mode, the clean state of the surface of the pH meter is kept, and impurities can be prevented from polluting detection liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of on-line detection equipment, in particular to an on-line pH detection device. Background Art

[0002] When modern pharmaceutical industries carry out production activities, it is necessary to on-line detect the pH value of the liquid in the reaction tank to ensure stable reaction conditions. The pH meter device of the traditional reaction tank is directly installed in the reaction tank. Due to long-term immersion, it often leads to inaccurate pH detection, thus misjudging the reaction situation. In addition, if there is a viscous material solution in the reaction system, it will cause the viscous material to stick to the pH meter probe and lose the detection function. When cleaning the pH meter of the existing on-line pH detection device, generally by flushing with clean water, the cleaning effect is limited, and impurities are easily brought into the reaction tank. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides an on-line pH detection device.

[0004] The technical solution of the utility model is: an on-line pH detection device, including a reaction tank and a detection pool. The reaction tank is communicated with the detection pool through a circulation pipeline. A detachable top cover is arranged above the detection pool. A convex pipe is arranged on the top cover. A detachable bushing is arranged in the convex pipe. An elevating detection mechanism is arranged directly above the bushing. The elevating mechanism includes a pH meter. The pH meter passes through the bushing and enters the detection pool. The elevating detection mechanism is fixedly connected with the detection pool through a fixing frame.

[0005] Further, the circulation pipeline includes a first connecting pipe and a second connecting pipe. A three-way pipe is arranged at the bottom of the reaction tank. The three-way pipe is communicated with one end of the first connecting pipe. The other end of the first connecting pipe is communicated with the bottom of the detection pool. One end of the second connecting pipe is communicated with the bottom of the detection pool, and the other end is communicated with the upper part of the reaction tank. An air-operated pump is arranged on the first connecting pipe.

[0006] Further, a valve is arranged on the second connecting pipe, and a three-way valve is arranged on the three-way pipe.

[0007] Further, the top cover is fixedly connected with the detection pool through a flange.

[0008] Further, the bushing includes a conical section, a cylindrical section and an outer edge. One end of the cylindrical section is provided with a conical section, and the other end is provided with an outer edge. The cylindrical section is provided with an external thread, and the convex pipe is provided with an internal thread matching the external thread. The outer edge is in contact with the top surface of the convex pipe.

[0009] Further, a plurality of evenly spaced reinforcing ribs are arranged on the circumferential direction of the outer surface of the conical section.

[0010] Further, the lifting and detecting mechanism includes a cylinder and a clamp; the cylinder is fixedly connected to the fixing frame, the telescopic end of the cylinder passes through the fixing frame and is fixedly connected to the clamp, and a fastening bolt is provided on one side of the clamp.

[0011] Further, a plurality of air blowing mechanisms are provided on the fixing frame. The air blowing mechanism includes a fixing seat and a universal pipe. The fixing seat is fixedly connected to the fixing frame and can be communicated with an external high-pressure air source. One end of the universal pipe is connected to the fixing seat, and the other end is provided with a nozzle.

[0012] Compared with the prior art, the advantages of the present utility model are as follows: the lifting and detecting mechanism drives the pH meter to enter and exit the detection pool. The pH meter passes through the ferrule and contacts the liquid in the detection pool to perform pH value detection; after the detection contact, the pH meter leaves the ferrule, and the ferrule scrapes the impurities remaining on the surface of the pH meter to ensure the cleanliness of the surface of the pH meter. The liquid in the detection pool will eventually flow back into the reaction tank. The top cover can reduce the contact area between the liquid in the detection pool and the outside world and prevent impurities from falling into the reaction tank. The detachable top cover is convenient for cleaning the detection pool and preventing residues from accumulating in the detection pool and interfering with the normal operation of the pH meter. The detachable ferrule is convenient for maintenance or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic diagram of the whole of the present utility model;

[0015] Figure 2 is Figure 1 an enlarged view of part A in

[0016] Figure 3 It is a schematic diagram of the ferrule of the present utility model.

[0017] Wherein: 1, reaction tank; 2, first communication pipe; 3, second communication pipe; 4, detection pool; 11, three-way pipe; 111, three-way valve; 21, pneumatic pump; 31, valve; 41, top cover; 42, fixing frame; 43, ferrule; 411, convex pipe; 421, universal pipe; 422, cylinder; 423, clamp; 424, fastening bolt; 425, fixing seat; 431, conical section; 432, cylindrical section; 433, outer edge; 434, reinforcing rib; 435, through port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope protected by the present utility model.

[0019] The following will describe the specific embodiments of the present utility model in conjunction with the accompanying drawings:

[0020] As Figures 1 to 3 shown, an on-line pH detection device includes a reaction tank 1 and a detection cell 4. The reaction tank 1 is communicated with the detection cell 4 through a circulation pipeline. A top cover 41 is provided above the detection cell 4. The top cover 41 is detachably connected to the detection cell 4 through a flange. A convex pipe 411 is provided on the top cover 41. A detachable ferrule 43 is provided inside the convex pipe 411. An elevating detection mechanism is provided directly above the ferrule 43. The elevating detection mechanism is fixedly connected to the detection cell 4 through a fixing frame 42. The elevating detection mechanism drives the pH meter to enter or exit the detection cell 4, and the ferrule 43 scrapes impurities on the outer surface of the pH meter. The top cover 41 reduces the contact area between the liquid in the detection cell 4 and the outside world, preventing impurities from mixing into the reaction tank 1. The detachable top cover 41 facilitates cleaning of the detection cell 4, preventing the remaining impurities from interfering with the normal detection work of the pH meter.

[0021] The circulation pipeline includes a first connecting pipe 2 and a second connecting pipe 3. A three-way pipe 11 is provided at the bottom of the reaction tank 1. The three-way pipe 11 is communicated with one end of the first connecting pipe 2. The other end of the first connecting pipe 2 is communicated with the bottom of the detection cell 4. One end of the second connecting pipe 3 is communicated with the bottom of the detection cell 4, and the other end is communicated with the upper part of the reaction tank 1, which facilitates completely draining the liquid in the detection cell 4 into the reaction tank 1. A pneumatic pump 21 is provided on the first connecting pipe 2. The pneumatic pump 21 pumps the liquid in the reaction tank 1 into the detection cell 4. A valve 31 is provided on the second connecting pipe 3, and a three-way valve 111 is provided on the three-way pipe 11. When the valve 31 is closed and the pneumatic pump 21 works, the liquid remains in the detection cell 4. When the valve 31 is opened, the liquid in the detection cell 4 is drained into the reaction tank 1. The three-way valve 111 can control the outflow direction of the liquid in the reaction tank 1. When it is necessary to detect the pH value, the three-way valve 111 is controlled to divert the liquid to the first connecting pipe 2 where the pneumatic pump 21 is located. When it is necessary to use the liquid in the reaction tank 1, the three-way valve 111 is controlled to export the liquid from the other pipe orifice of the three-way tank.

[0022] The ferrule 43 includes a conical section 431, a cylindrical section 432, and an outer edge 433. One end of the cylindrical section 432 is provided with the conical section 431, and the other end is provided with the outer edge 433. The cylindrical section 432 is provided with an external thread, and the convex tube 411 is provided with an internal thread that matches the external thread. The outer edge 433 contacts the top surface of the convex tube 411. When the ferrule 43 is screwed into the convex tube 411, the outer edge 433 plays a limiting role. The side surface of the outer edge 433 is provided with anti-slip lines, which facilitates the rotation operation of the ferrule 43. The ferrule 43 is provided with a through port 435 that matches the pH meter, and the inner wall of the ferrule 43 fits the outer surface of the pH meter. The conical section 431 is made of rubber material. The telescopic elasticity of the rubber material is used to make the conical section 431 fit and wrap the outer surface of the pH meter. When the pH meter is pulled out of the ferrule 43, the conical section 431 scrapes off the debris on the surface of the pH meter. A plurality of evenly spaced reinforcing ribs 434 are provided on the circumferential direction of the outer surface of the conical section 431. The reinforcing ribs 434 can improve the clamping force of the conical section on the pH meter and prevent the conical section 431 from losing elasticity prematurely due to fatigue.

[0023] The lifting detection mechanism includes a cylinder 422 and a clamp 423. The cylinder 422 is fixedly connected to the fixed frame 42. The telescopic end of the cylinder 422 passes through the fixed frame 42 and is fixedly connected to the clamp 423. A fastening bolt 424 is provided on one side of the clamp 423. The pH meter is assembled onto the clamp 423, and the fastening bolt 424 is tightened to fixedly connect the pH meter and the clamp 423. The cylinder 422 drives the clamp 423 to move up and down, and then the clamp 423 drives the pH meter to enter and exit the detection pool 4 up and down.

[0024] A plurality of air blowing mechanisms are provided on the fixed frame 42. The air blowing mechanism includes a fixed seat 425 and a universal tube 421. The fixed seat 425 is fixedly connected to the fixed frame 42. The fixed seat 425 can be connected to an external high-pressure air source. One end of the universal tube 421 is connected to the fixed seat 425, and the other end is provided with a nozzle. Utilizing the flexible deformation performance of the universal tube 421, the nozzle is directed at the pH meter, and the airflow is used to blow off the possible residual impurities on the surface of the pH meter, further improving the cleanliness of the surface of the pH meter.

[0025] The working principle of the specific embodiment of the present invention is as follows: The pneumatic pump 21 pumps the liquid in the reaction tank 1 into the detection pool 4. The cylinder 422 drives the pH meter to extend into the detection pool 4 to detect the liquid in the detection pool 4. When the cylinder 422 drives the pH meter to leave the ferrule 43, the ferrule 43 scrapes off the impurities on the surface of the pH meter. The air blowing mechanism further cleans the surface of the pH meter to keep the surface of the pH meter clean.

[0026] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0027] The above are only the preferred embodiments of the present invention, and do not impose any formal limitations on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An on-line pH detection device, comprising a reaction tank (1) and a detection cell (4), wherein the reaction tank (1) is communicated with the detection cell (4) through a circulation pipeline, and is characterized in that: Above the detection cell (4), there is a detachable top cover (41). On the top cover (41), there is a convex tube (411). Inside the convex tube (411), there is a detachable ferrule (43). Directly above the ferrule (43), there is a lifting detection mechanism. The lifting detection mechanism includes a pH meter. The lifting detection mechanism is fixedly connected to the detection cell (4) through a fixing frame (42). The pH meter passes through the ferrule (43) and enters the detection cell (4).

2. The online pH detection device according to claim 1, wherein: The circulation pipeline includes a first connecting pipe (2) and a second connecting pipe (3). At the bottom of the reaction tank (1), there is a three-way pipe (11). The three-way pipe (11) is connected to one end of the first connecting pipe (2). The other end of the first connecting pipe (2) is connected to the bottom of the detection cell (4). One end of the second connecting pipe (3) is connected to the bottom of the detection cell (4), and the other end is connected to the upper part of the reaction tank (1). A pneumatic pump (21) is provided on the first connecting pipe (2).

3. The on-line pH detection device according to claim 2, characterized in that: A valve (31) is provided on the second connecting pipe (3), and a three-way valve (111) is provided on the three-way pipe (11).

4. The online pH detection device according to claim 1, wherein: The top cover (41) is fixedly connected to the detection cell (4) through a flange.

5. The on-line pH detection device according to claim 1, wherein: The ferrule (43) includes a conical section (431), a cylindrical section (432), and an outer edge (433). One end of the cylindrical section (432) is provided with the conical section (431), and the other end is provided with the outer edge (433). The cylindrical section (432) has an external thread, and the convex tube (411) has an internal thread that mates with the external thread. The outer edge (433) contacts the top surface of the convex tube (411).

6. The online pH detection device according to claim 5, wherein: On the circumferential direction of the outer surface of the conical section (431), there are a plurality of evenly spaced reinforcing ribs (434).

7. The on-line pH detection device according to claim 1, characterized in that: The lifting detection mechanism includes a cylinder (422) and a clip (423). The cylinder (422) is fixedly connected to the fixing frame (42). The telescopic end of the cylinder (422) passes through the fixing frame (42) and is fixedly connected to the clip (423). A fastening bolt (424) is provided on one side of the clip (423).

8. The on-line pH detection device according to claim 1, wherein: There are a plurality of air blowing mechanisms on the fixing frame (42). The air blowing mechanism includes a fixing seat (425) and a universal pipe (421). The fixing seat (425) is fixedly connected to the fixing frame (42). The fixing seat (425) can be connected to an external high-pressure air source. One end of the universal pipe (421) is connected to the fixing seat (425), and the other end is provided with a nozzle.

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