Exhaust device for pump filling of shield pump
By utilizing pipeline connections and a gas-liquid separator to process gas during the priming process of the canned motor pump, the problem of incomplete venting of the canned motor pump was solved, achieving stable operation of the equipment and reducing maintenance costs.
Patent Information
- Application Number
- CN202520813694.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-25
AI Technical Summary
During the priming process of existing canned motor pumps, incomplete gas discharge leads to damage to the pump bearings. Furthermore, gas accumulation during the venting process affects the performance of the drain tank and the transfer pump, increasing maintenance frequency and costs.
Design an exhaust device that connects to production equipment, filters, shielded pumps, distillation columns, and gas-liquid separators via pipelines. The device utilizes an outlet check valve and a drain port to ensure complete exhaust of the gas, which is then processed in the gas-liquid separator.
This achieves complete venting of the canned pump, preventing equipment damage, reducing maintenance frequency and costs, while ensuring stable pipeline pressure, improving venting efficiency and equipment safety.
Smart Images
Figure CN223923314U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of shield pump, concretely to an exhaust device for shield pump priming. BACKGROUND
[0002] The shield pump is a kind of centrifugal pump without sealing design, realizes completely no leakage liquid transport by integrating pump and motor, using shield sleeve to isolate rotor and stator.
[0003] Shield pump needs to be primed before starting to completely discharge the gas in pump body, if gas phase is not all discharged, it is easy to cause pump bearing damage. Current shield pump priming process is as follows: first, open the valve on the suction side of pump, close the valve on the discharge side of pump, then open the exhaust valve on the pump body, inject liquid material (chlorosilane) through the valve on the suction side, to discharge the gas in pump and pipeline through the exhaust valve, realize the function of safe production.
[0004] In actual use process, due to installation problem, gas usually gathers in the top of filter and cannot be discharged, so that in the process of discharging the gas in shield pump by using the above-mentioned sealed priming method, there is the problem of incomplete exhaust, which causes shield pump to be damaged frequently, so that the maintenance frequency and maintenance cost of shield pump are high.
[0005] The existing patent with publication number CN220956008U discloses a shield pump sealed priming exhaust device. The patent uses pressure difference principle to exhaust shield pump, the discharged gas is temporarily stored in guide tank, and the temporarily stored material (chlorosilane) in guide tank is returned to production equipment by pump, to realize the purpose of exhaust.
[0006] Although the application can solve the problem of exhaust, but in the process of exhaust, the discharged gas is discharged into guide tank together with material, so that the gas in guide tank is rich, which affects the exhaust effect of tank pump; at the same time, when the material in guide tank is extracted by delivery pump, the delivery pump is easy to cavitate due to the reason of gas enrichment in guide tank, which causes the performance of delivery pump to decline and mechanical damage, and the delivery pump is damaged. UTILITY MODEL CONTENTS
[0007] The utility model aims at providing an exhaust device for shield pump priming, to solve the problems in the above background.
[0008] The utility model is implemented by the following technical solutions:
[0009] An exhaust device for shield pump priming, comprising production equipment, filter and shield pump; the production equipment is connected with the inlet end of filter through first pipeline, and the outlet end of filter is connected with the inlet end of shield pump through second pipeline;
[0010] The gas outlet end of the shield pump is connected with the gas inlet end of the rectifying tower through a third pipeline, the middle part of the third pipeline is connected with one end of a fourth pipeline, the fourth pipeline is provided with an exhaust side valve, an outlet check valve is arranged between the exhaust side valve and the third pipeline on the fourth pipeline, the fourth pipeline is connected with the other end of a fifth pipeline between the exhaust side valve and the outlet check valve, the other end of the fifth pipeline is connected with the input end of a gas-liquid separator, and the top of the filter is provided with a guide nozzle connected with the fifth pipeline through a sixth pipeline.
[0011] Preferably, the first pipeline, the second pipeline, the third pipeline, the fifth pipeline and the sixth pipeline are respectively provided with an inhalation side valve, a first valve, a second valve, a third valve and a fourth valve.
[0012] The advantage of the utility model is that the gas gathered in the top of the filter can be completely exhausted, thereby avoiding the influence of the gas on the shield pump during the tank pumping process, and making the tank pumping exhaust more complete, the exhausted gas can be partially introduced into the rectifying tower for treatment, and the other part can be introduced into the gas-liquid separator for gas-liquid separation treatment, so as to facilitate the subsequent recycling treatment.
[0013] Compared with the prior art mentioned in the background art, the pressure in the pipeline can be stably operated while exhausting, the exhausted gas can be reasonably treated, other equipment is not damaged, the exhaust effect of the shield pump is improved, the damage frequency of the shield pump is reduced, and the maintenance frequency and maintenance cost of the shield pump are reduced. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structural schematic view of the utility model.
[0015] In the figure: 1, production equipment, 2, filter, 3, shield pump, 4, rectifying tower, 5, gas-liquid separator, 11, first pipeline, 11.1, inhalation side valve, 12, second pipeline, 12.1, first valve, 13, third pipeline, 13.1, second valve, 14, fourth pipeline, 14.1, exhaust side valve, 14.2, outlet check valve, 15, fifth pipeline, 15.1, third valve, 16, sixth pipeline, 16.1, fourth valve. DETAILED DESCRIPTION
[0016] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0017] Please refer to Figure 1 The utility model provides a kind of exhaust device for shielding pump fills pump technical scheme:
[0018] A kind of exhaust device for shielding pump fills pump, including production equipment 1, filter 2 and shield pump 3;Production equipment 1 is connected by first pipeline 11 and the import end of filter 2, and the export end of filter 2 is connected by second pipeline 12 and the import end of shield pump 3;
[0019] The gas outlet end of shield pump 3 is connected by third pipeline 13 and the gas inlet end of rectifying column 4, and the discharged gas is directly into rectifying column 4, which can effectively avoid that toxic material is exposed to the outside, and the middle part of third pipeline 13 is connected with one end of fourth pipeline 14, and discharge side valve 14.1 is arranged on fourth pipeline 14, and outlet check valve 14.2 is arranged between discharge side valve 14.1 and third pipeline 13 on fourth pipeline 14, by setting outlet check valve 14.2, when the pipeline pressure of third pipeline 13 is too high, material cooperates with part of gas to flow out through fourth pipeline 14, so as to play the role of pressure relief pressure in third pipeline 13 pipeline, guarantee the stable exhaust of tank pump process, and one end of fifth pipeline 15 is connected between discharge side valve 14.1 and outlet check valve 14.2 on fourth pipeline 14 and the other end of fifth pipeline 15 is connected with the input end of gas-liquid separator 5, so that the discharged gas or material enters gas-liquid separator 5 and carries out gas-liquid separation, which is convenient for subsequent recycling processing. Meanwhile, guide nozzle 2.1 is arranged on the top of filter 2, and guide nozzle 2.1 is connected with fifth pipeline 15 by sixth pipeline 16. Effectively solve the problem that the gas is gathered in the top of filter 2 during filling pump, which leads to incomplete filling pump.
[0020] First pipeline 11, second pipeline 12, third pipeline 13, fifth pipeline 15 and sixth pipeline 16 are respectively installed with suction side valve 11.1, first valve 12.1, second valve 13.1, third valve 15.1 and fourth valve 16.1.
[0021] Working principle: when exhausting, close the exhaust side valve 14.1 and open other valves. Make the material (chlorosilane) pass through the first pipeline 11 into the filter 2, make the gas gathered in the upper part of the top of the filter 2 be discharged from the guide spout 2.1 by the material (chlorosilane), and enter the gas-liquid separator 5 along the sixth pipeline to carry out gas-liquid separation. After the material (chlorosilane) passes through the filter 2, it enters the canned pump 3 again through the second pipeline 12 to start the tank pump, makes the gas in the canned pump 3 flow into the rectification tower 14 along the third pipeline 13 with the material (chlorosilane) to carry out subsequent treatment. When the pipeline pressure of the third pipeline 13 is too high, the material flows out along the fourth pipeline 14 with part of the gas to carry out pressure relief, and the material and the gas relieved by pressure relief flow into the gas-liquid separator 5 along the fifth pipeline 15 to carry out gas-liquid separation.
[0022] The above merely describes the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An exhaust device for shielding a pump, comprising a production device (1), a filter (2) and a shield pump (3); the production device (1) is connected with the inlet end of the filter (2) through a first pipeline (11), the outlet end of the filter (2) is connected with the inlet end of the shield pump (3) through a second pipeline (12); characterized in that the gas outlet end of the shield pump (3) is connected with the gas inlet end of a rectifying tower (4) through a third pipeline (13), the middle part of the third pipeline (13) is connected with one end of a fourth pipeline (14), the fourth pipeline (14) is provided with an exhaust side valve (14.1), an outlet check valve (14.2) is arranged between the exhaust side valve (14.1) and the third pipeline (13) on the fourth pipeline (14), one end of a fifth pipeline (15) is connected between the exhaust side valve (14.1) and the outlet check valve (14.2) on the fourth pipeline (14), the other end of the fifth pipeline (15) is connected with the input end of a gas-liquid separator (5), the top of the filter (2) is provided with a guide nozzle (2.1), the guide nozzle (2.1) is connected with the fifth pipeline (15) through a sixth pipeline (16).
2. A venting device for a canned pump according to claim 1, characterized in that: The first pipeline (11), the second pipeline (12), the third pipeline (13), the fifth pipeline (15) and the sixth pipeline (16) are respectively provided with a suction side valve (11.1), a first valve (12.1), a second valve (13.1), a third valve (15.1) and a fourth valve (16.1).