Exhaust device of unloading shield pump

Abstract

The utility model relates to an unloading shield pump exhaust device which comprises a tank car (1), a shield pump (2), an exhaust tank (3) and a storage tank (4). The shield pump (2) comprises a feeding port and a discharging port, the feeding port is connected with the tank car (1) through a feeding pipeline (5), the discharging port is connected with the storage tank (4) through a discharging pipeline (6), the discharging pipeline (6) is connected with the exhaust tank (3) through an exhaust pipeline (7), a gas phase balance pipe (8) is arranged between the tank car (1) and the storage tank (4), and the exhaust tank (3) is connected with the gas phase balance pipe (8). And valves are arranged on the feeding pipeline (5), the discharging pipeline (6) and the exhaust pipeline (7). Compared with the prior art, potential safety hazards and environmental protection problems can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid delivery technical field especially is related to a kind of unloading shield pump exhaust device. BACKGROUND

[0002] Pump as fluid delivery equipment, plays a vital role in various fields such as industry and agriculture. In recent years, with the development of industry and human's increasing attention to environment, safety and occupational health, the corresponding use condition requirement of pump is also higher and higher. Usually for the delivery of flammable, explosive, toxic, corrosive and valuable liquid, etc. The requirement of leak-free delivery pump is adopted, and this demand promotes the development of shield pump, because pump and driving motor are sealed in a pressure vessel filled with pumped fluid, and the pressure vessel only has static seal. Therefore, there is no dynamic seal in the structure of shield pump, and only static seal on the outer shell of the pump can achieve the level of completely no leakage, and then widely used in chemical industry. But shield pump needs to be filled and pumped before running to avoid cavitation and cause performance degradation, even lead to pump damage and safety accidents, so the regular exhaust operation of shield pump is particularly important for its safe and stable operation and maintenance.

[0003] The current filling and pumping exhaust process of shield pump is mainly as follows: first, close the valve on the outlet side of the pump, open the valve on the inlet side of the pump, then open the exhaust valve on the pump body, and then the liquid enters through the pump suction side valve, and the gas in the pump cavity and pipeline is discharged into the atmosphere through the exhaust valve, so as to realize the safe operation of the pump. However, shield pump is usually used for the delivery of flammable, explosive, toxic and corrosive materials, etc. At this time, if the exhaust gas and material discharged by filling and pumping are discharged into the atmosphere, it will inevitably cause safety hazards and environmental pollution problems. Obviously, this exhaust method does not meet the current safety and environmental protection requirements. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing an unloading shield pump exhaust device to reduce safety hazards and environmental problems.

[0005] The utility model can be realized by the following technical scheme: an unloading shield pump exhaust device, comprising a tank car, a shield pump, an exhaust tank and a storage tank.

[0006] The shield pump comprises an inlet and an outlet, the inlet is connected with the tank car through an inlet pipeline, the outlet is connected with the storage tank through an outlet pipeline, the outlet pipeline is connected with the exhaust tank through an exhaust pipeline, and a gas phase balance pipe is arranged between the tank car and the storage tank.

[0007] Preferably, valves are arranged on the inlet pipeline, outlet pipeline and exhaust pipeline.

[0008] Preferably, the feed pipeline is detachably connected with the tank car.

[0009] Preferably, the gas phase balance pipeline is detachably connected with the tank car.

[0010] Preferably, the gas phase balance pipeline is arranged at the top of the tank car and the storage tank.

[0011] Preferably, the tail gas pipeline is connected with the tail gas treatment system.

[0012] Further preferably, the tail gas pipeline is connected with the gas phase balance pipeline.

[0013] Further preferably, the tail gas pipeline is connected with the gas phase balance pipeline.

[0014] In the utility model, when the tail gas pipeline is not detached and the valve on the gas phase balance pipeline is closed, the normal exhaust of the storage tank can enter the tail gas treatment system for treatment, and is discharged after reaching the standard.

[0015] Preferably, the top of the storage tank is provided with a single call valve with a fire barrier.

[0016] In the utility model, the single call valve can discharge gas when the tank car is detached or the gas in the storage tank exceeds a certain pressure, thereby protecting the storage tank.

[0017] Further preferably, the single call valve is arranged on the tail gas pipeline.

[0018] Preferably, the top of the exhaust tank is connected with the gas phase balance pipeline through the exhaust pipeline on the upper part of the exhaust tank.

[0019] Further preferably, a valve is arranged on the exhaust pipeline on the upper part of the exhaust tank.

[0020] Further preferably, a valve is arranged on the gas phase balance pipeline.

[0021] Preferably, the bottom of the exhaust tank is connected with the feed pipeline through the liquid return pipeline.

[0022] Further preferably, a valve is arranged on the liquid return pipeline.

[0023] Preferably, the bottom of the exhaust tank is provided with a sampling pipeline.

[0024] Further preferably, a valve is arranged on the sampling pipeline.

[0025] Further preferably, a sampling bottle is arranged below the sampling pipeline.

[0026] Further preferably, a hose quick connector is arranged at the top of the exhaust tank.

[0027] In the utility model, the hose quick connector can pour the remaining material after sampling and analysis into the exhaust tank and then to the storage tank for recycling.

[0028] Further preferably, a valve is provided on the hose quick coupling.

[0029] Preferably, a pressure gauge is provided on the discharge line.

[0030] Preferably, a liquid level display window is provided on the exhaust tank.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] 1. The utility model provides a novel unloading shield pump exhaust device, reduces the problem of safety hidden danger and environmental protection,

[0033] 2. The exhaust device of the utility model makes the exhaust process gas of the unloading shield pump be able to be closed recycling, reduces environmental pollution, and reduces safety risk,

[0034] 3. The exhaust device of the utility model makes the part of material of the unloading shield pump exhaust process be able to be closed recycling, reduces the loss of material, and reduces the safety risk and environmental protection problem of material leakage,

[0035] 4. The exhaust tank of the exhaust device of the utility model has the advantages of simple structure, small required volume, small land occupation area and low cost,

[0036] 5. The exhaust device of the utility model solves the sampling problem of tank car unloading material, realizes closed sampling, and the remaining sample after sampling analysis can also be recycled by the exhaust device,

[0037] 6. The utility model can realize that material is not leaked in the exhaust process of shield pump, can realize recycling of material, and can realize closed sampling of unloading material and recycling of discharged material, utilization of the device reduces the loss of material, reduces safety hidden danger and environmental protection problem,

[0038] 7. The exhaust device of the utility model solves the exhaust of shield pump, avoids the cavitation problem of pump, and realizes safe and environmental protection production.

[0039] 8. The utility model is suitable for conveying liquid material in more fields such as chemical industry, pharmacy, petroleum, electric power and metallurgy. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 It is the structural schematic diagram of the unloading shield pump exhaust device of the utility model.

[0041] In the figure: 1-tank car, 2-shielded pump, 3-exhaust tank, 4-storage tank, 5-feeding pipeline, 6-discharging pipeline, 7-exhaust pipeline, 8-gas phase balance pipeline, 9-exhaust tank upper exhaust pipeline, 10-liquid return pipeline, 11-sampling pipeline, 12-hose quick connector, a-valve. DETAILED DESCRIPTION

[0042] The utility model will be explained in detail below in combination with the drawings and specific embodiments. The embodiments are implemented on the premise of the technical scheme of the utility model, and detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiments.

[0043] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0044] Some embodiments of the utility model will be explained in detail below in combination with the drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0045] Embodiment 1

[0046] A kind of unloading shielded pump exhaust device, as shown in Figure 1 Including tank car 1, shielded pump 2, exhaust tank 3, storage tank 4, feeding pipeline 5, discharging pipeline 6, exhaust pipeline 7 and gas phase balance pipeline 8.

[0047] Specifically, shielded pump 2 includes feeding port and discharging port, feeding port is connected with tank car 1 by feeding pipeline 5, discharging port is connected with storage tank 4 by discharging pipeline 6, discharging pipeline 6 is connected with exhaust tank 3 by exhaust pipeline 7, gas phase balance pipeline 8 is arranged between tank car 1 and storage tank 4, and exhaust tank 3 is connected with gas phase balance pipeline 8.

[0048] And, in the embodiment, valve a is arranged on feeding pipeline 5, discharging pipeline 6 and exhaust pipeline 7.

[0049] Before using the device of the embodiment to carry out unloading operation, the shielded pump is first filled and pumped to exhaust, specifically including the following steps:

[0050] S1: close the valve a on the discharging pipeline 6, open the valve a on the feeding pipeline 5, and then open the valve a on the exhaust pipeline 7;

[0051] S2: start shielded pump 2, the liquid material in tank car 1 enters shielded pump 2 through feeding pipeline 5, the gas in the pump cavity and pipeline is discharged into gas phase balance pipeline 8 through exhaust tank 3, and finally can enter the tail gas treatment system, to achieve the process of closed discharge treatment.

[0052] When the device is used for unloading operation, the valves on the discharge pipeline 6 and the feed pipeline 5 are opened, the valve a on the exhaust pipeline 7 is closed, and the liquid material in the tank car 1 is transported to the feed pipeline 5 and the discharge pipeline 6 under the action of the canned pump 2 and then to the storage tank 4.

[0053] Example 2

[0054] In the embodiment, the gas phase balance pipeline 8 is connected with the top of the tank car 1 and the storage tank 4, the top of the exhaust tank 3 is connected with the gas phase balance pipeline 8 through the upper exhaust pipeline 9 of the exhaust tank, and the upper exhaust pipeline 9 of the exhaust tank and the gas phase balance pipeline 8 are also provided with the valve a.

[0055] In addition, in the embodiment, the bottom of the exhaust tank 3 is connected with the feed pipeline 5 through the liquid return pipeline 10, the bottom of the exhaust tank 3 is also provided with the sampling pipeline 11, the top of the exhaust tank 3 is also provided with the hose quick connector 12, and the liquid return pipeline 10 and the sampling pipeline 11 are also provided with the valve a. The rest is the same as example 1.

[0056] Before the device is used for unloading operation, the material in the tank car 1 can be sampled and analyzed to detect the quality and composition of the material, which specifically includes the following steps:

[0057] S1: close the valve a on the discharge pipeline 6, open the valve a on the feed pipeline 5, and open the valve a on the exhaust pipeline 7;

[0058] S2: start the canned pump 2, the liquid material in the tank car 1 enters the canned pump 2 through the feed pipeline 5, the gas in the pump cavity and the pipeline is discharged into the gas phase balance pipeline 8 through the exhaust tank 3, and the liquid material is left in the exhaust tank 3;

[0059] S3: close the valves a on the feed pipeline 5 and the exhaust pipeline 7, and close the canned pump 2, open the valve a on the sampling pipeline 11, and sample with a sampling bottle.

[0060] In the embodiment, if there is still remaining material after sampling and analysis, the remaining material can be poured into the exhaust tank 3 through the hose quick connector 12 at the top of the exhaust tank 3, and then the valve a on the liquid return pipeline 10 is opened, so that the remaining material can enter the canned pump 2 through the feed pipeline 5 and be transported to the storage tank 4 for reuse.

[0061] Example 3

[0062] The embodiment relates to an exhaust device of a shield pump in a material unloading process, and particularly relates to a tank truck 1, a shield pump 2, an exhaust tank 3 and a storage tank 4. On one hand, before unloading operation is performed, a valve a on the pump outlet side into the storage tank 4 is closed, a feeding valve a on the pump inlet side is opened, then a valve a on the pump outlet side into the exhaust tank 3 is opened, an upper exhaust pipeline 9 of the exhaust tank is connected with a gas phase balance pipeline 8 and a tail gas pipeline of the storage tank 4, then liquid is fed in through the valve a on the pump suction side, gas in the pump cavity and the pipeline is exhausted into the tail gas pipeline of the storage tank 4 or the gas phase balance pipeline 8 of the tank truck 1 through the exhaust tank 3, and finally enters a tail gas treatment system, so that a closed exhaust treatment process is achieved, part of the liquid enters the exhaust tank 3 and can be fed into the storage tank 4 through the pump again by opening the valve a at the bottom of the exhaust tank 3, so as to be recycled and reused. On the other hand, before material of the tank truck 1 is unloaded, sampling analysis is needed to detect material quality and ingredient conditions, during the pump exhaust process, the pump conveying time can be appropriately prolonged according to the required sampling amount, so that the exhaust tank 3 reaches the required sample content, then a sampling bottle is connected through a valve connecting pipeline connected to the bottom of the exhaust tank 3, finally the valve a at the bottom of the exhaust tank 3 is opened to sample, if there is remaining material after sampling analysis, the remaining material can enter the exhaust tank 3 through a quick connector 12 on the top of the exhaust tank 3, then enter the shield pump by opening the valve a at the bottom of the exhaust tank 3, and is conveyed to the storage tank 4 through the shield pump for recycling.

[0063] The above description of the embodiments is for facilitating the ordinary skilled person in the technical field to understand and use the utility model. The person skilled in the art can obviously easily make various modifications to the embodiments, and apply the general principles described herein to other embodiments without creative labor. Therefore, the utility model is not limited to the above embodiments, and the person skilled in the art can make improvements and modifications according to the disclosure of the utility model without departing from the scope of the utility model.

Claims

1. A de-stacking shield pump venting device, characterized by, Tank truck (1), shielding pump (2), exhaust tank (3) and storage tank (4) are included; The shielding pump (2) includes a feed inlet and a discharge outlet, the feed inlet is connected with the tank truck (1) through a feed pipeline (5), the discharge outlet is connected with the storage tank (4) through a discharge pipeline (6), the discharge pipeline (6) is connected with the exhaust tank (3) through an exhaust pipeline (7), a gas phase balance pipeline (8) is arranged between the tank truck (1) and the storage tank (4), and the exhaust tank (3) is connected with the gas phase balance pipeline (8). Valves are arranged on the feed pipeline (5), the discharge pipeline (6) and the exhaust pipeline (7).

2. The de- trucking shielded pump venting apparatus of claim 1, wherein, The gas phase balance pipeline (8) is arranged on the top of the tank truck (1) and the storage tank (4).

3. The de- trucking shielded pump venting apparatus of claim 1, wherein, The top of the storage tank (4) is connected with a tail gas pipeline, and the tail gas pipeline is connected with a tail gas treatment system.

4. The de- trucking shielded pump venting apparatus of claim 1, wherein, The top of the exhaust tank (3) is connected with the gas phase balance pipeline (8) through an exhaust tank upper exhaust pipeline (9), and valves are arranged on the exhaust tank upper exhaust pipeline (9) and the gas phase balance pipeline (8).

5. The de- trucking shielded pump vent apparatus of claim 1, wherein, The bottom of the exhaust tank (3) is connected with the feed pipeline (5) through a liquid return pipeline (10), and a valve is arranged on the liquid return pipeline (10).

6. The de- trucking shielded pump vent apparatus of claim 1, wherein, A sampling pipeline (11) is arranged on the bottom of the exhaust tank (3), and a valve is arranged on the sampling pipeline (11).

7. The de- trucking shielded pump venting apparatus of claim 6, wherein, A sampling bottle is arranged below the sampling pipeline (11).

8. The de- trucking shielded pump venting apparatus of claim 6, wherein, A hose quick connector (12) is arranged on the top of the exhaust tank (3), and a valve is arranged on the hose quick connector (12).

9. The trailer unloading shielded pump venting apparatus of claim 1, wherein, A pressure gauge is arranged on the discharge pipeline (6).

10. The trailer unloading shielded pump venting apparatus of claim 1, wherein, A liquid level display window is arranged on the exhaust tank (3).

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