Ammonia water sampling device for circulating tank for magnesium oxide production

Abstract

The utility model discloses a kind of ammonia water sampling devices for circulating tank of magnesium oxide production, specifically related to magnesium oxide production sampling technical field, including circulating tank, the rear end of the circulating tank is connected with discharge pipeline, the rear end of the discharge pipeline is connected with ammonia water sampling mechanism, the ammonia water sampling mechanism includes tee pipe, the tee pipe front end is connected with discharge pipeline through connection, the rear end of the tee pipe is connected with discharge pipe.The utility model relates to a kind of ammonia water sampling devices for circulating tank of magnesium oxide production, by sampling point is removed from circulating tank body to downstream discharge pipeline, and using the valve control of remote operation and closed charging mechanism, single person can be safely, conveniently realized sampling operation, effectively solve the health risk high, labor intensity and the problem needing many people to cooperate in prior art due to narrow operation space, need to be exposed to ammonia gas environment at close range, improve sampling efficiency and operating safety.

Description

Technical Field

[0001] This utility model relates to the field of magnesium oxide production sampling technology, and in particular to an ammonia water sampling device for a circulating tank in magnesium oxide production. Background Technology

[0002] In the magnesium oxide production process, ammonia water is typically used as a precipitant or alkaline regulator in the reaction and is stored and recycled in a circulating tank. To effectively monitor and manage the production process, ammonia water samples need to be periodically extracted from the circulating tank for analysis. The existing technology has the following problems:

[0003] Currently, common ammonia sampling methods typically rely on sampling ports located within the circulating tank itself. However, these ports are often situated inside or deep within the tank, resulting in extremely limited operating space and making sampling operations very inconvenient. More importantly, during sampling, ammonia readily volatilizes, generating high concentrations of ammonia gas. Operators are exposed to this environment at close range, causing severe irritation to the eyes, nose, and throat, and posing significant health and safety risks. Furthermore, existing sampling operations usually require two people working together: one to operate the valve and the other to receive the sample. This process is labor-intensive, time-consuming, and inefficient overall. Utility Model Content

[0004] The main purpose of this utility model is to provide an ammonia sampling device for circulating tanks used in magnesium oxide production, which can effectively solve the problems of inconvenient sampling operation, high health risks, the need for multiple people to cooperate, and the environmental pollution and safety hazards caused by easy leakage of ammonia during the sampling process in the existing technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A magnesium oxide production circulating tank ammonia sampling device includes a circulating tank, a discharge pipe connected to the rear end of the circulating tank, and an ammonia sampling mechanism connected to the rear end of the discharge pipe. The ammonia sampling mechanism includes a three-way pipe, the front end of which is connected to the discharge pipe, and the rear end of which is connected to a discharge pipe. A bypass pipe is connected to a bypass pipe at the other end of the three-way pipe, and a control valve is connected to the other end of the control valve. An L-shaped sampling tube is provided at the bottom vertical section of the L-shaped sampling tube. The feeding mechanism includes an internally threaded tapered tube head, a one-way tube fixedly connected to the bottom of the internally threaded tapered tube head, a sealing tube head at the lower end of the one-way tube, and a sampling test tube at the lower end of the sealing tube head for collecting ammonia as a sample.

[0007] Preferably, the bottom end of the L-shaped sampling tube is fixedly connected to an external threaded ring, the internal threaded tapered tube head is threadedly connected to the external threaded ring, the inner ring of the one-way tube is provided with a one-way valve with a downward opening, and the bottom end of the one-way tube is fixedly connected to an extension tube.

[0008] Preferably, the inner ring of the sealing tube head has an internal threaded wall, and the sealing tube head is connected to the one-way pipe threadedly by means of the internal threaded wall. A limit ring is fixedly installed on the upper part of the outer wall of the one-way pipe, and a one-way valve is fixedly installed on the inner ring of the sealing tube head. When the sealing tube head is connected to the one-way pipe threadedly, the top of the sealing tube head abuts against the limit ring for limitation, and at this time the extension tube is located above the one-way valve.

[0009] Preferably, the sampling tube has an internally threaded wall II above the inner ring, and the sealing tube head is installed at the top of the sampling tube by means of the threaded connection between the outer wall and the internally threaded wall II.

[0010] Preferably, the tee pipe is fixed to the rear installation port of the discharge pipe by a threaded connection.

[0011] Preferably, the control valve is a ball valve or a butterfly valve.

[0012] Preferably, the three-way pipe, discharge pipe, bypass pipe, L-shaped sampling pipe, loading mechanism and connection are all made of ammonia-resistant corrosion-resistant materials.

[0013] Preferably, both one-way valve one and one-way valve two are duckbill valves, used to prevent irritating odors from escaping from the L-shaped sampling tube or sampling test tube. The sampling test tube is a glass test tube, which is convenient for observing the sample amount.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model provides an ammonia sampling device for a circulating tank in magnesium oxide production. By moving the sampling point from the circulating tank body to the downstream discharge pipe and adopting a remotely operable valve control and a closed loading mechanism, the sampling operation can be completed safely and conveniently by a single person. This effectively solves the problems of high health risks, high labor intensity, and the need for multiple people to cooperate caused by the narrow operating space and close exposure to the ammonia environment in the prior art, thus improving sampling efficiency and operational safety.

[0016] 2. This utility model provides an ammonia water sampling device for a circulating tank in magnesium oxide production. By setting a sealing structure consisting of two one-way valves in the sampling flow path, it ensures that ammonia water can only flow into the sampling test tube in one direction during the sampling process. After the sampling is completed, the flow path can be automatically sealed, effectively preventing the leakage and volatilization of ammonia water and irritating ammonia gas. This solves the problem that existing sampling methods are prone to causing environmental pollution and harming the health of operators, and improves the level of protection for personnel and the environment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the ammonia sampling mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the loading mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the internally threaded tapered pipe head of this utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the sealing tube head and sampling test tube of this utility model.

[0022] In the diagram: 1. Circulation tank; 2. Discharge pipe; 3. Ammonia sampling mechanism; 31. T-junction; 32. Discharge pipe; 33. Bypass pipe; 34. Control valve; 35. L-shaped sampling tube; 351. External threaded ring; 36. Loading mechanism; 361. Internal threaded tapered tube head; 362. One-way tube; 3621. Extension tube; 3622. One-way valve one; 3623. Limiting ring; 363. Sealing tube head; 3631. Internal threaded wall one; 3632. One-way valve two; 364. Sampling test tube; 3641. Internal threaded wall two. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 As shown, an ammonia sampling device for a circulating tank in magnesium oxide production includes a circulating tank 1. A discharge pipe 2 is connected to the rear end of the circulating tank 1. An ammonia sampling mechanism 3 is connected to the rear end of the discharge pipe 2. The ammonia sampling mechanism 3 includes a three-way pipe 31. The front end of the three-way pipe 31 is connected to the discharge pipe 2. The rear end of the three-way pipe 31 is connected to a discharge pipe 32. A bypass pipe 33 is connected to a bypass pipe 33. The other end of the bypass pipe 33 is connected to a control valve 34. The other end of the control valve 34 is connected to an L-shaped sampling pipe 35. A loading mechanism 36 is provided at the bottom of the vertical part of the L-shaped sampling pipe 35 for collecting ammonia as a sample.

[0025] like Figure 2As shown, the ammonia sampling mechanism 3 includes a three-way pipe 31 that is fixed to the rear end of the discharge pipe 2 via a threaded connection to ensure a firm and sealed connection. The control valve 34 is a ball valve or a butterfly valve used to control the opening and closing of the bypass pipe 33. The bottom end of the L-shaped sampling pipe 35 is fixedly connected to an external threaded ring 351 for connection with the loading mechanism 36.

[0026] like Figure 3 As shown, the loading mechanism 36 includes an internally threaded tapered tube head 361, a one-way tube 362 fixedly connected to the bottom of the internally threaded tapered tube head 361, a sealing tube head 363 provided at the lower end of the one-way tube 362, and a sampling tube 364 provided at the lower end of the sealing tube head 363. The internally threaded tapered tube head 361 is threadedly connected to an externally threaded ring 351, thereby realizing the detachable connection between the loading mechanism 36 and the L-shaped sampling tube 35.

[0027] like Figure 4 As shown, the inner ring of the one-way tube 362 is provided with a downward-opening one-way valve 3622. The bottom end of the one-way tube 362 is fixedly connected to an extension tube 3621. The one-way valve 3622 is a duckbill valve, which is used to prevent ammonia water backflow and ammonia gas emission. A limit ring 3623 is fixedly installed on the upper part of the outer wall of the one-way tube 362 to limit the installation position of the sealing tube head 363.

[0028] like Figure 5 As shown, the inner ring of the sealing tube head 363 has an internal threaded wall 3631. The sealing tube head 363 is threadedly connected to the one-way tube 362 via the internal threaded wall 3631. The inner ring of the sealing tube head 363 is fixedly installed with a one-way valve 3632, which is also a duckbill valve. When the sealing tube head 363 is threadedly connected to the one-way tube 362, the top of the sealing tube head 363 abuts against the limiting ring 3623 for limiting. At this time, the extension tube 3621 is located above the one-way valve 3632. The inner ring of the sampling tube 364 has an internal threaded wall 3641. The sealing tube head 363 is installed at the top of the sampling tube 364 via the threaded connection between its outer wall and the internal threaded wall 3641.

[0029] In this utility model, the three-way pipe 31, the discharge pipe 32, the bypass pipe 33, the L-shaped sampling pipe 35, the loading mechanism 36, and the connecting parts are all made of ammonia-resistant materials, such as stainless steel or polypropylene plastic. The sampling test tube 364 is a glass test tube, which is convenient for observing the sample amount. Both the one-way valve 3622 and the one-way valve 3632 are duckbill valves, which effectively prevent irritating odors from emanating from the L-shaped sampling pipe 35 or the sampling test tube 364, ensuring operational safety.

[0030] The device of this utility model improves operational accessibility by moving the sampling point from the main body of the circulation tank to the downstream discharge pipe. Its core lies in the use of the one-way valve 3622 and one-way valve 3632 in the loading mechanism 36 to construct a closed sampling environment that allows ammonia water to flow in one direction during sampling and can be automatically sealed after sampling. The L-shaped sampling tube 35 is connected to the loading mechanism 36 by a detachable threaded connection, which facilitates the installation and replacement of the sampling test tube 364. The entire device forms a temporary, controllable and closed sampling flow path from the discharge pipe 2 to the sampling test tube 364.

[0031] The working principle of the ammonia sampling device for the circulating tank in magnesium oxide production will be explained in detail below.

[0032] like Figure 1-5 As shown, under normal production conditions, ammonia water flows from the circulation tank 1 into the tee pipe 31 through the discharge pipe 2, and then flows out from the discharge pipe 32 back into the production process. At this time, the control valve 34 is closed, and ammonia water does not flow into the bypass pipe 33. When sampling is required, the operator opens the control valve 34, and a portion of the ammonia water flows into the L-shaped sampling pipe 35 through the bypass pipe 33. The ammonia water then enters the loading mechanism 36 through the L-shaped sampling pipe 35. In the loading mechanism 36, the ammonia water first passes through the internal screw... The conical tube head 361 enters the one-way tube 362. One-way valve 3622 opens under ammonia pressure, allowing ammonia to flow downwards but preventing reverse flow of ammonia or ammonia gas. Ammonia flows through the extension tube 3621 into the sealed tube head 363. One-way valve 3632 also opens under ammonia pressure, allowing ammonia to flow downwards into the sampling tube 364 but preventing ammonia gas in the sampling tube 364 from escaping upwards. Ammonia gradually accumulates in the sampling tube 364. The operator can observe this accumulation through a transparent glass tube. The sample volume is observed in the glass test tube. Once the required sample volume is reached, the control valve 34 is closed to cut off the ammonia supply. The ammonia pressure in the flow path disappears. At this time, check valves 3622 and 3632 quickly close and reset due to their own elasticity and the possible trace ammonia pressure in the upper pipeline. Check valve 3622 effectively prevents ammonia and residual ammonia in the L-shaped sampling tube 35 and upstream pipeline from flowing back or diffusing into the atmosphere. At the same time, check valve 3632 seals the top of the sampling test tube 364, completely sealing it and ensuring that the ammonia sample inside the test tube cannot leak. The volatilized ammonia is also completely isolated inside the test tube. In this way, the safety of the operator and the environment is achieved during the process of unscrewing the sampling test tube 364 for testing. The operator can safely send the sampling test tube 364 to the laboratory for analysis. The entire sampling process only requires one person to operate, without close exposure to the ammonia environment, thereby reducing health risks and improving sampling efficiency.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An ammonia sampling device for a circulating tank in magnesium oxide production, comprising a circulating tank (1), wherein a discharge pipe (2) is connected to the rear end of the circulating tank (1), and an ammonia sampling mechanism (3) is connected to the rear end of the discharge pipe (2), characterized in that: The ammonia sampling mechanism (3) includes a three-way pipe (31), the front end of which is connected to the discharge pipe (2), the rear end of which is connected to the discharge pipe (32), the bypass pipe of which is connected to the bypass pipe (33), the other end of which is connected to the control valve (34), the other end of which is connected to the L-shaped sampling pipe (35), the bottom of which is vertically provided with a loading mechanism (36), the loading mechanism (36) includes an internally threaded tapered pipe head (361), the bottom of which is fixedly connected to a one-way pipe (362), the lower end of which is provided with a sealing pipe head (363), and the lower end of which is provided with a sampling test tube (364) for collecting ammonia as a sample.

2. The ammonia sampling device for a circulating tank in magnesium oxide production according to claim 1, characterized in that: The bottom end of the L-shaped sampling tube (35) is fixedly connected to an external threaded ring (351), the internal threaded tapered tube head (361) is threadedly connected to the external threaded ring (351), the inner ring of the one-way tube (362) is provided with a downward-opening one-way valve (3622), and the bottom end of the one-way tube (362) is fixedly connected to an extension tube (3621).

3. The ammonia water sampling device for a circulating tank in magnesium oxide production according to claim 2, characterized in that: The inner ring of the sealing tube head (363) is provided with an internal threaded wall (3631). The sealing tube head (363) is threadedly connected to the one-way tube (362) by means of the internal threaded wall (3631). A limit ring (3623) is fixedly installed on the upper part of the outer wall of the one-way tube (362). A one-way valve (3632) is fixedly installed on the inner ring of the sealing tube head (363). When the sealing tube head (363) and the one-way tube (362) are threadedly connected and installed, the top of the sealing tube head (363) abuts against the limit ring (3623) for limitation. At this time, the extension tube (3621) is located above the one-way valve (3632).

4. The ammonia water sampling device for a circulating tank in magnesium oxide production according to claim 3, characterized in that: The sampling tube (364) has an internal threaded wall (3641) above the inner ring, and the sealing tube head (363) is installed at the top of the sampling tube (364) by means of the threaded connection between the outer wall and the internal threaded wall (3641).

5. The ammonia water sampling device for a circulating tank in magnesium oxide production according to claim 1, characterized in that: The three-way pipe (31) is fixed to the rear end of the discharge pipe (2) by a threaded connection.

6. The ammonia sampling device for a circulating tank in magnesium oxide production according to claim 1, characterized in that: The control valve (34) is a ball valve or a butterfly valve.

7. The ammonia water sampling device for a circulating tank in magnesium oxide production according to claim 1, characterized in that: The three-way pipe (31), discharge pipe (32), bypass pipe (33), L-shaped sampling pipe (35), loading mechanism (36) and connection are all made of ammonia-resistant corrosion-resistant materials.

8. The ammonia sampling device for a circulating tank in magnesium oxide production according to claim 3, characterized in that: Both one-way valve one (3622) and one-way valve two (3632) are duckbill valves, used to prevent irritating odors from escaping from the L-shaped sampling tube (35) or sampling test tube (364). The sampling test tube (364) is a glass test tube, which is convenient for observing the sampling amount.

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