Salt field saltpeter preparation workshop saltpeter system flow control saltpeter separation device

Abstract

The utility model discloses a flow control saltpeter separation device for a saltpeter system of a saltpeter preparation workshop in a salt field, which comprises an evaporation tank provided with a liquid inlet pipeline; a connecting pipeline is arranged on the liquid inlet pipeline, two sets of flow meters are arranged on the connecting pipeline, a storage shell used for storing cleaning liquid is arranged below the connecting pipeline, two sets of cleaning pipelines A are symmetrically arranged on the connecting pipeline, and two sets of cleaning pipelines B are symmetrically arranged on the storage shell. The cleaning pipeline A is connected with the cleaning pipeline B through a flange, and a driving pump is arranged on the cleaning pipeline B. The cleaning device has the beneficial effects that through the cleaning liquid arranged in the storage shell, under the driving of the driving pump, the flowmeter can be conveniently cleaned, the measurement precision can be conveniently kept, and the situation that the amount of a solution in the evaporation tank is too high, so that the measurement precision is ensured is avoided; the evaporation efficiency is influenced.

Description

Technical Field

[0001] The utility model relates to a flow control and nitration separation device for a nitration system in a nitration production workshop of a salt field. Background Art

[0002] In the traditional salt field nitrate production process, evaporation and concentration methods are often used to extract nitrate. Among them, the flow rate of the solution directly affects the efficiency of evaporation and concentration. However, due to the complexity of the salt field environment, traditional flow meter measurements are prone to errors, resulting in inaccurate solution flow control, which indirectly reduces the efficiency of nitration. In addition, traditional flow meters are also prone to scaling, odor accumulation and other problems in the salt field environment, and have a short service life. Frequent instrument calibration and maintenance are required, which increases operating costs. However, these maintenances often require shutdowns, affecting continuous production. In view of this, the utility model proposes a flow control nitration device for the nitrate system in the salt field nitrate production workshop to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a flow control and nitration separation device for a nitration system in a nitration workshop of a salt field, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A flow control and nitration separation device for a nitration system in a salt field nitration workshop comprises an evaporation tank, wherein the evaporation tank is provided with a liquid inlet pipeline;

[0006] A connecting pipe is provided on the liquid inlet pipe, two groups of flow meters are provided on the connecting pipe, a storage shell for storing cleaning liquid is provided below the connecting pipe, two groups of cleaning pipes A are symmetrically provided on the connecting pipe, two groups of cleaning pipes B are symmetrically provided on the storage shell, the cleaning pipes A and B are flange-connected, a driving pump is provided on the cleaning pipe B, and the driving pump drives the cleaning liquid to form a cleaning circuit between the storage shell and the inner cavity of the connecting pipe.

[0007] As an improvement of the above technical solution, electric valves are symmetrically arranged at both ends of the connecting pipe, and the electric valves are connected to the connecting pipe flange;

[0008] A group of electric valves are connected to the liquid inlet pipeline flange.

[0009] As an improvement of the above technical solution, a manual valve is provided on the cleaning pipeline A, and the manual valve is opened to connect the inner cavity of the connecting pipeline with the inner cavity of the storage shell.

[0010] As an improvement of the above technical solution, a feed pipe is provided on the storage shell, and the feed pipe is connected to the inner cavity of the storage shell.

[0011] As an improvement of the above technical solution, a threaded sealing cover is provided on the feed pipe.

[0012] As an improvement of the above technical solution, the two groups of flow meters are arranged between the two groups of cleaning pipes A.

[0013] As an improvement of the above technical solution, the two groups of electric valves and the two groups of flow meters are connected to an external controller.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] During the operation of the nitrate system in the nitrate workshop, the pipeline for conveying the solution is connected to the connecting pipeline, and then the flow rate is monitored by two sets of flow meters. When the flow meter needs to be maintained, the connecting pipeline is closed, and then a set of driving pumps is used to introduce the cleaning in the storage shell into the inner cavity of the connecting pipeline, and the cleaning liquid contacts the detection part of the flow meter to clean the detection part, and then another set of driving pumps is used to introduce the cleaning liquid in the inner cavity of the connecting pipeline into the storage shell to form a cleaning loop;

[0016] By using the cleaning liquid arranged in the storage shell, the flow meter can be cleaned under the drive of the driving pump, so as to maintain the measurement accuracy and avoid the excessive amount of solution in the evaporation tank, which affects the evaporation efficiency. At the same time, the service life of the flow meter can be extended, the maintenance workload can be reduced, and the overall practicality can be greatly improved. At the same time, since the flow is measured by two groups of flow meters, single point failure can be avoided, and real-time comparison can be performed. When a single flow meter failure is found, timely calibration and maintenance can be carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the positions of the connecting pipes and the storage shell of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the connecting pipeline of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the storage shell of the utility model.

[0021] In the figure: 10, evaporation tank; 11, liquid inlet pipe; 20, connecting pipe; 21, cleaning pipe A; 22, manual valve; 30, flow meter; 40, electric valve; 50, storage shell; 51, feed pipe; 52, sealing cover; 53, cleaning pipe B; 54, driving pump. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example:

[0024] like Figure 1-4 As shown, this embodiment proposes a flow control and nitration separation device for a nitration system in a salt field nitration workshop, comprising an evaporation tank 10, wherein the evaporation tank 10 is provided with a liquid inlet pipe 11;

[0025] A connecting pipe 20 is provided on the liquid inlet pipe 11, and two groups of flow meters 30 are provided on the connecting pipe 20. A storage shell 50 for storing cleaning liquid is provided below the connecting pipe 20. Two groups of cleaning pipes A21 are symmetrically provided on the connecting pipe 20, and two groups of cleaning pipes B53 are symmetrically provided on the storage shell 50. The cleaning pipes A21 and the cleaning pipes B53 are flange-connected. A driving pump 54 is provided on the cleaning pipe B53. The driving pump 54 drives the cleaning liquid to form a cleaning circuit between the inner cavity of the storage shell 50 and the connecting pipe 20.

[0026] In this embodiment, during the operation of the nitrate system in the nitrate production workshop, the pipeline for conveying the solution is connected to the connecting pipeline 20, and then the flow rate is monitored by two sets of flow meters 30. When the flow meter 30 needs to be maintained, the connecting pipeline 20 is closed, and then a set of driving pumps 54 is used to introduce the cleaning in the storage shell 50 into the inner cavity of the connecting pipeline 20, and the cleaning liquid contacts the detection part of the flow meter 30 to clean the detection part, and then another set of driving pumps 54 is used to introduce the cleaning liquid in the inner cavity of the connecting pipeline 20 into the storage shell 50 to form a cleaning loop;

[0027] By means of the cleaning liquid arranged in the storage shell 50, the flow meter 30 can be cleaned under the drive of the driving pump 54, so as to maintain the measurement accuracy and avoid the excessive amount of solution in the evaporation tank 10, which affects the evaporation efficiency. At the same time, the service life of the flow meter 30 can be extended, the maintenance workload can be reduced, and the overall practicality can be greatly improved. At the same time, since the flow is measured by two groups of flow meters 30, single point failure can be avoided, and real-time comparison can be performed. When a single flow meter 30 fails, timely calibration and maintenance can be performed.

[0028] Specifically, electric valves 40 are symmetrically arranged at both ends of the connecting pipe 20, and the electric valves 40 are flange-connected to the connecting pipe 20;

[0029] A group of the electric valves 40 are flange-connected to the liquid inlet pipeline 11 .

[0030] In this embodiment, the electric valve 40 is used to control whether the connecting pipe 20 is in a connected state, that is, when the inner cavity of the connecting pipe 20 needs to be cleaned, the two sets of electric valves 40 seal the connecting pipe 20 to prevent the cleaning liquid from entering the evaporation tank 10.

[0031] Of course, another set of electric valves 40 is connected to the pipeline for conveying the solution.

[0032] Specifically, a manual valve 22 is provided on the cleaning pipe A21. When the manual valve 22 is opened, the inner cavity of the connecting pipe 20 is connected to the inner cavity of the storage shell 50.

[0033] In this embodiment, the manual valve 22 is used to control whether the cleaning pipe A21 is in a connected state, that is, when the inner cavity of the connecting pipe 20 needs to be cleaned, the two sets of manual valves 22 are opened to connect the cleaning pipe A21 and the cleaning pipe B53.

[0034] Specifically, a feed pipe 51 is disposed on the storage shell 50 , and the feed pipe 51 is communicated with the inner cavity of the storage shell 50 .

[0035] In this embodiment, the feed pipe 51 is used to introduce or export the cleaning liquid into or out of the storage shell 50 .

[0036] Specifically, the feed pipe 51 is provided with a sealing cover 52 which is threadedly connected.

[0037] In this embodiment, the sealing cover 52 is used to improve the sealing performance.

[0038] Specifically, the two groups of flow meters 30 are arranged between the two groups of cleaning pipes A21.

[0039] Specifically, the two groups of electric valves 40 and the two groups of flow meters 30 are connected to an external controller.

[0040] In this embodiment, during the process of measuring the flow rate, when the two sets of flow meters 30 simultaneously detect that the flow rate reaches the maximum capacity of the evaporation tank 10, the signal is transmitted to the controller, and the controller controls the two sets of electric valves 40 to close to prevent excessive solution from entering the evaporation tank 10 and affecting the nitration efficiency.

[0041] In this case, the controller is preferably a PLC control system.

[0042] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flow control and nitration device for the nitration system in a salt field nitration workshop, characterized by: It comprises an evaporation tank (10), wherein the evaporation tank (10) is provided with a liquid inlet pipe (11); The liquid inlet pipe (11) is provided with a connecting pipe (20), and two groups of flow meters (30) are provided on the connecting pipe (20). A storage shell (50) for storing cleaning liquid is provided below the connecting pipe (20). Two groups of cleaning pipes A (21) are symmetrically provided on the connecting pipe (20), and two groups of cleaning pipes B (53) are symmetrically provided on the storage shell (50). The cleaning pipes A (21) and the cleaning pipes B (53) are flange-connected, and a driving pump (54) is provided on the cleaning pipe B (53). The driving pump (54) drives the cleaning liquid to form a cleaning circuit between the inner cavities of the storage shell (50) and the connecting pipe (20).

2. The flow control and nitration separation device for the nitration system of the salt field nitration workshop according to claim 1 is characterized in that: Electric valves (40) are symmetrically arranged at both ends of the connecting pipe (20), and the electric valves (40) are flange-connected to the connecting pipe (20); A group of electric valves (40) are flange-connected to the liquid inlet pipeline (11).

3. The flow control and nitration separation device for the nitration system of the salt field nitration workshop according to claim 1 is characterized in that: The cleaning pipeline A (21) is provided with a manual valve (22), and when the manual valve (22) is opened, the inner cavity of the connecting pipeline (20) is connected to the inner cavity of the storage shell (50).

4. The flow control and nitration separation device for the nitration system of the salt field nitration workshop according to claim 1 is characterized in that: The storage shell (50) is provided with a feed pipe (51), and the feed pipe (51) is in communication with the inner cavity of the storage shell (50).

5. The flow control and nitration separation device for the nitration system of the salt field nitration workshop according to claim 4 is characterized in that: The feed pipe (51) is provided with a threaded sealing cover (52).

6. The flow control and nitration separation device for the nitration system of the salt field nitration workshop according to claim 1 is characterized in that: The two groups of flow meters (30) are arranged between the two groups of cleaning pipes A (21).

7. The flow control and nitration separation device for the nitration system of the salt field nitration workshop according to claim 2 is characterized in that: The two groups of electric valves (40) and the two groups of flow meters (30) are both connected to an external controller.

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