Sampling device for chemical cycle sampling and material recovery

Abstract

The utility model relates to the technical field of sampling devices, in particular to a sampling device for chemical cycle sampling and material recovery. The device comprises a circulating main pipeline communicated between two working procedures, a sampling pipeline is arranged on the circulating main pipeline in parallel, a sampler is connected in the sampling pipeline in a penetrating manner, and a universal gas collecting hood communicated to an external waste gas treatment facility is arranged outside the sampler; according to the online sampling device, online sampling can be realized, the pipeline does not need to be washed and replaced by materials during sampling and after sampling, the materials are saved, the cost is saved, the sampled materials can return to a production line to be recycled, and waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling devices, in particular to a sampling device for chemical cycle sampling and material recovery. Background Art

[0002] In the chemical industry, it is necessary to collect representative samples from the production line for testing and analysis to confirm the quality of semi-finished products and finished products in the production process.

[0003] At present, when sampling in the chemical industry, a certain amount of material is generally discharged for sampling through a sampling valve, or sampled through a sampling device. For example, Chinese patent publication number CN111397960A discloses a sampling unit, a sampling head and a combined sampling device for liquid chemical products. The sampling unit includes a liquid storage tank, an upper rotating cover assembly, a lower rotating cover assembly and an exhaust inner tube. The combined sampling head includes a plurality of sampling units connected in series, the exhaust inner tubes of two adjacent sampling units are butt-jointed together, and the lower end of the exhaust inner tube of the sampling unit at the tail end is sealed. The sampling device includes a combined sampling head and a drive adjustment mechanism, and the drive adjustment mechanism includes a negative pressure gas source, an exhaust main pipe, a regulating pipe and a support pipe.

[0004] The utility model can simultaneously collect liquid chemical product samples at different depths and can be disassembled and assembled.

[0005] However, to ensure representative samples, sampling through sampling valves or equipment often requires discharging a certain amount of material for pipeline flushing and replacement. This discharged material is difficult to recover and reuse. Chemical materials are generally expensive and valuable, resulting in significant waste. Furthermore, during the sampling and material handling process, some VOCs escape, which is detrimental to environmental protection and employee occupational health.

[0006] In order to solve the above problems, the utility model provides a sampling device for chemical cycle sampling and material recovery. Utility Model Content

[0007] The purpose of the utility model is to provide a sampling device for chemical cycle sampling and material recovery, so as to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] A sampling device for chemical cycle sampling and material recovery, comprising a main circulation pipeline connected between two processes, and a sampling pipeline is provided in parallel with the main circulation pipeline;

[0010] A circulating feed valve for controlling the entry of materials into the sampling device is provided between the circulating main pipeline and the upper process, and a circulating discharge valve is provided between the circulating main pipeline and the lower process;

[0011] The sampling pipeline is connected with a sampler, and the sampling pipeline is provided with a sampling feed valve and a sampling discharge valve at the front and rear positions of the sampler respectively;

[0012] The main circulation pipeline is equipped with a circulation pump for sucking out materials and transporting them to the next process;

[0013] A universal gas collection hood connected to the external exhaust gas treatment facilities is provided outside the sampler.

[0014] More optimally, the inlet of the sampling pipeline is connected between the circulation discharge valve and the lower process; the outlet of the sampling pipeline is connected between the upper process and the circulation feed valve.

[0015] More optimally, a Y-type filter is provided between the circulation discharge valve and the circulation pump; and a filter discharge valve is provided on the circulation main pipeline after the Y-type filter.

[0016] More optimally, a sampling main valve is provided at the feed point of the sampling pipeline close to the circulation main pipeline to control the flow of samples into the sampling pipeline.

[0017] More optimally, a circulation branch pipe is provided on the circulation main pipeline outside the circulation discharge valve, the circulation branch pipe is connected to the upper process, and is controlled by a branch valve provided on the circulation branch pipe.

[0018] More optimally, the sampler includes a shell, with a sampling inlet and a sampling outlet respectively provided at both ends of the shell, the sampling inlet and the sampling outlet being connected to the sampling pipeline; a sampling opening is provided on the side of the shell facing the sky.

[0019] More preferably, the sampling opening is closed by a quick-opening door hinged on the housing.

[0020] More optimally, the universal air collecting hood includes an air collecting pipe, a movable pipe and an arched air collecting hood arranged at the end of the movable pipe. The movable pipe and the air collecting pipe, and the movable pipe and the arched air collecting hood are connected through corrugated pipe joints. The universal air collecting hood is also provided with a cylinder for automatically adjusting the angle.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0022] (1) In the present invention, the material can flow through the sampling branch pipe and the sampler, thereby realizing online sampling of the material and ensuring that the sample meets the sampling requirements.

[0023] (2) In the present invention, there is no need to use materials to flush and replace the pipeline during and after sampling, which saves materials and saves costs. At the same time, the sampled materials can be returned to the production line for recycling, reducing waste.

[0024] (3) In the present invention, the escaped gas can be sucked in real time during sampling, thereby preventing the escape of harmful gases, reducing environmental pollution, and reducing harm to human health.

[0025] (4) In the present invention, a quick-opening door is provided on the sampler, which can improve the efficiency of sampling and facilitate the operator to open and close the sampler during sampling.

[0026] (5) In the present invention, a Y-type filter is provided. Since impurities are inevitably trapped in the material during the sampling process, the cleanliness of the material can be improved after being filtered through the Y-type filter, so that the material can be recycled again, thereby avoiding affecting the quality of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 Schematic diagram of the pipeline of Example 1;

[0029] Figure 2 is a structural diagram of the sampler in Example 1;

[0030] Figure 3 This is a structural diagram of the universal air collecting hood in Example 1.

[0031] Among them, 1. Circulation main pipeline; 11. Circulation feed valve; 12. Filter discharge valve; 13. Circulation discharge valve; 14. Sampling main valve; 15. Branch valve; 16. Sampling feed valve; 17. Sampling discharge valve; 18. Y-type filter; 2. Sampling pipeline; 3. Circulation pump; 4. Sampler; 41. Housing; 42. Sampling inlet; 43. Sampling outlet; 44. Sampling opening; 45. Quick-opening door; 5. Universal gas collecting hood; 51. Gas collecting pipe; 52. Movable pipe; 53. Arched gas collecting hood; 54. Corrugated pipe joint; 55. Cylinder; 6. Circulation branch pipe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The utility model provides a sampling device for chemical cycle sampling and material recovery, the overall structure of which is as follows: Figure 1 As shown, it includes a circulation main pipeline 1, which connects the upper process and the lower process. The two ends of the circulation main pipeline 1 are respectively connected to a circulation feed valve 11 and a circulation discharge valve 13. When the two valves are opened, the material circulates in the circulation main pipeline 1.

[0034] To enable online sampling, a sampling line 2 is connected in parallel to the main circulation pipeline 1. The inlet of sampling line 2 is located between the upper process 5 and the circulation feed valve 11, and the outlet is located between the circulation discharge valve 13 and the lower process. This allows for online sampling of the material by simply entering sampling line 2 when sampling is required.

[0035] The sampling line 2 is connected to a sampler 4, such as Figure 1 and Figure 2 As shown, the sampler 4 includes a tubular housing 41, with a sampling inlet 42 and a sampling outlet 43 at both ends of the housing 41, which are represented by N1 and N2 respectively.

[0036] The sampling inlet 42 enters the sampler 4 and then returns to the sampling line 2 through the sampling outlet 43. A sampling opening 44 is provided in the middle portion 10 of the sampler 4. This opening 44 is closed by a quick-opening door 45 hinged to the housing 41. The sampling opening 44 is indicated by N3 in the figure. Once material enters the sampler 4, the quick-opening door 45 is opened to complete sampling.

[0037] The size standards of N1, N2 and N3 are shown in Table 1.

[0038] Table 1 Pipe orifice table

[0039] symbol Nominal size Nominal pressure Connection standards Flange type Sealing type N1 40 16 HG / 20592-2009 WN RF N2 80 16 HG / 20592-2009 WN RF N2 200X250 / / / /

[0040] Between the circulation feed valve 11 and the circulation discharge valve 13 of the main circulation pipeline 1, a Y-type filter 18, a filter discharge valve 12, and a circulation pump 3 are installed in this order. Simultaneously, along the material flow direction, a sampling main valve 14, a sampling feed valve 16, and a sampling discharge valve 17 are also installed in this order on the sampling pipeline 2. Material can only flow through the sampling pipeline 2 when all three valves are open.

[0041] At the end of the main circulation pipeline 1, between the discharge valve 13 and the downstream process, a branch circulation pipe 6 is connected to the upstream process. This branch circulation pipe 6 can return the material flowing through the main circulation pipeline 1 to the upstream process. A branch valve 15 is installed on the branch circulation pipe 6 to control its opening and closing.

[0042] In addition, in order to prevent the escape of gas during the sampling process, the utility model is also provided with a universal gas collecting cover 5. Figure 1 and Figure 3 As shown, the universal gas collection hood 5 is correspondingly arranged above the sampler 4. The universal gas collection hood 5 mainly comprises three parts: a gas collection pipe 51, a movable pipe 52, and an arched gas collection hood 53. To ensure flexibility, the gas collection pipe 51 and the movable pipe 52, as well as the movable pipe 52 and the arched gas collection hood 53, are connected by a corrugated pipe joint 54. When necessary, the inclination angle and direction of the universal gas collection hood 5 can be changed to adapt to different usage requirements. To increase automation performance, the utility model also provides a cylinder 55 on the movable pipe 52 to automatically drive the movable pipe 52 to change its angle.

[0043] The use process of this utility model is as follows:

[0044] Before sampling, open the circulation feed valve 11, filter discharge valve 12, circulation discharge valve 13 and branch valve 15, start the circulation pump 3, and wait for 10-30 minutes. Adjust the circulation time according to the total circulation amount.

[0045] Then open the sampling main valve 14, sampling feed valve 16 and sampling discharge valve 17 on the sampling pipeline 2 to allow the material to flow in the sampling pipeline 2 and the sampler 4. After circulating for 3 to 5 minutes, close the sampling feed valve 16 and the sampling discharge valve 17. At this time, the quick opening door 45 of the sampler 4 is in a locked state.

[0046] Open the universal gas collecting hood 5 to collect the exhaust gas from the sampler 4, open the quick-opening door 45 on the sampler 4, and slowly open the sampling feed valve 16, use the sampling bottle to take out the material sample, and close the sampling feed valve 16 after the sampling is completed.

[0047] Finally, close the quick-opening door 45 and lock it, open the sampling feed valve 16 and the sampling discharge valve 17, use the circulation pump 3 to suck out the material in the sampling pipeline 2, first close the sampling main valve 14, the sampling feed valve 16 and the sampling discharge valve 17 in sequence, then close the circulation pump 3, the circulation feed valve 11, the circulation discharge valve 13 and the branch valve 15 in sequence to complete the sampling work.

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A sampling device for chemical cycle sampling and material recovery, characterized by: The invention comprises a circulation main pipeline (1) communicating between two working processes, wherein a sampling pipeline (2) is provided in parallel with the circulation main pipeline (1); A circulating feed valve (11) for controlling the entry of materials into the sampling device is provided between the circulating main pipeline (1) and the upper process, and a circulating discharge valve (13) is provided between the circulating main pipeline (1) and the lower process; The sampling pipeline (2) is connected to a sampler (4) through-through, and a sampling feed valve (16) and a sampling discharge valve (17) are respectively provided on the sampling pipeline (2) at the front and rear positions of the sampler (4); The main circulation pipeline (1) is provided with a circulation pump (3) for sucking out the material and transporting it to the next process; The sampler (4) is provided with a universal gas collecting hood (5) outside thereof which is connected to an external waste gas treatment facility.

2. A sampling device for chemical cycle sampling and material recovery according to claim 1, characterized in that: The inlet of the sampling pipeline (2) is connected between the circulating discharge valve (13) and the lower process; the outlet of the sampling pipeline (2) is connected between the upper process and the circulating feed valve (11).

3. The sampling device for chemical cycle sampling and material recovery according to claim 1, characterized in that: A Y-type filter (18) is provided between the circulation discharge valve (13) and the circulation pump (3); and a filter discharge valve (12) is provided on the circulation main pipeline (1) after the Y-type filter (18).

4. The sampling device for chemical cycle sampling and material recovery according to claim 1, characterized in that: A sampling main valve (14) is provided at the feed point of the sampling pipeline (2) near the circulation main pipeline (1) for controlling the flow of samples into the sampling pipeline (2).

5. The sampling device for chemical cycle sampling and material recovery according to claim 1, characterized in that: A circulation branch pipe (6) is provided on the circulation main pipe (1) outside the circulation discharge valve (13). The circulation branch pipe (6) is connected to the upper process and is controlled by a branch valve (15) provided on the circulation branch pipe (6).

6. The sampling device for chemical cycle sampling and material recovery according to claim 1, characterized in that: The sampler (4) comprises a housing (41), and a sampling inlet (42) and a sampling outlet (43) are respectively provided at both ends of the housing (41), wherein the sampling inlet (42) and the sampling outlet (43) are connected to the sampling pipeline (2); and a sampling opening (44) is provided on the side of the housing (41) facing the sky.

7. A sampling device for chemical cycle sampling and material recovery according to claim 6, characterized in that: The sampling opening (44) is closed by a quick-opening door (45) hinged on the housing (41).

8. The sampling device for chemical cycle sampling and material recovery according to claim 1, characterized in that: The universal air collecting hood (5) comprises an air collecting pipe (51), a movable pipe (52), and an arched air collecting hood (53) arranged at the end of the movable pipe (52). The movable pipe (52) and the air collecting pipe (51), and the movable pipe (52) and the arched air collecting hood (53) are both connected via a corrugated pipe joint (54). The universal air collecting hood (5) is also provided with a cylinder (55) for automatically adjusting the angle.

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