Automatic liquid sealing device for airtight loading of train

Abstract

An automatic liquid sealing device for airtight loading of a train comprises a vertical pipe body and a sealing cap, a liquid sealing mechanism is arranged at the bottom end of the vertical pipe body, a lifting mechanism of the liquid sealing mechanism is arranged at the top of the vertical pipe body, and the liquid sealing mechanism comprises a liquid sealing plate capable of being sealed with the bottom end of the vertical pipe body. The lifting mechanism comprises a push rod motor fixed to the top end of the vertical pipe body, and the push rod motor is downwards connected with the liquid sealing plate through a push rod shaft. The vertical pipe body is sleeved with the sealing cap in a sliding mode through a vertical pipe guide sleeve, the vertical pipe body is provided with an upper limiting baffle ring and a lower limiting baffle ring which are used for limiting the vertical moving position of the sealing cap, the upper limiting baffle ring is provided with a proximity switch used for detecting the position of the sealing cap, and the sealing cap is provided with an induction plate matched with the proximity switch. The whole process is automatically operated; the structure is simple; the loading requirements of various tank openings can be met; and the vertical pipe automatically seals residual liquid, so that pollution is avoided. The safety is improved, and direct contact between personnel and toxic and harmful substances is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid loading and unloading, in particular to an automatic liquid sealing device for closed loading of trains. Background Art

[0002] With the rapid development of the petrochemical industry, high requirements have been put forward for the loading and unloading of oil, oil derivatives, and chemical raw materials, which require not only fast loading and unloading, automatic loading and unloading, but also environmentally friendly loading and unloading. After the petrochemical medium is loaded, the medium remaining in the crane pipe must be collected or sealed. To prevent the medium from dripping onto the ground and polluting the environment after the tank truck leaves, the old-fashioned approach is basically to hang an oil collection barrel on the vertical pipe of the loading crane pipe, which is not conducive to the development and integration of crane pipe loading and unloading. Due to the restrictions of the flip cover of the tank truck tank mouth, the automatic liquid receiving device with a liquid receiving mechanism sometimes cannot meet the requirements of medium collection. Utility Model Content

[0003] The technical problem to be solved by the utility model is to propose an automatic liquid sealing device for closed loading of trains which is convenient and reliable to implement in view of the deficiencies of the prior art.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions: an automatic liquid sealing device for closed loading of trains, comprising a vertical pipe body and a sealing cap, which is characterized by:

[0005] A liquid sealing mechanism is provided at the bottom end of the vertical tube body, and a lifting mechanism of the liquid sealing mechanism is provided at the top of the vertical tube body.

[0006] The liquid sealing mechanism includes a liquid sealing plate that can be sealed with the bottom end of the vertical tube body, and the lifting mechanism includes a push rod motor fixed on the top end of the vertical tube body, and the push rod motor is connected to the liquid sealing plate downward through the push rod shaft;

[0007] The sealing cap is slidably mounted on the vertical tube body through a vertical tube guide sleeve. An upper limit stop ring and a lower limit stop ring are provided on the vertical tube body to limit the upward and downward movement of the sealing cap. A proximity switch for detecting the position of the sealing cap is provided on the upper limit stop ring. The sealing cap is provided with a sensing plate that cooperates with the above-mentioned proximity switch.

[0008] The technical problem to be solved by the utility model can be further achieved by the following technical solution: the push rod shaft is coaxially arranged with the vertical tube body.

[0009] The technical problem to be solved by the utility model can be further achieved through the following technical solution: the sealing plate is provided with a guide block upwardly which can extend into the vertical pipe body.

[0010] The technical problem to be solved by the utility model can be further achieved by the following technical solution: a guide ring is provided at the lower part of the push rod shaft near the sealing plate to keep the push rod shaft coaxial with the vertical tube body.

[0011] The technical problem to be solved by the utility model can be further achieved through the following technical solution: a liquid inlet pipe is arranged on the side wall of the vertical tube body close to the lifting mechanism.

[0012] Compared with the prior art, the utility model has a sealing cap that can slide up and down along the vertical tube body, a proximity switch detects the position of the sealing cap, and a push rod motor is used to control the upward opening of the sealing plate to achieve loading. After loading, the sealing plate lifts and seals the vertical tube, sealing the residual liquid in the vertical tube. During the next loading, it can be loaded into the next tank truck. The entire process is fully automated; its structure is simple; it can meet various tank loading requirements; the vertical tube automatically seals the residual liquid without causing pollution. Improve safety and avoid direct contact between personnel and toxic and hazardous substances! BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the structural diagram of the utility model;

[0014] Figure 2 This is the structural diagram of the lifting mechanism;

[0015] Figure 3 It is the structure diagram of the residual liquid collection state;

[0016] Figure 4 This is the structural diagram of the loading status. DETAILED DESCRIPTION

[0017] The specific technical scheme of the utility model is further described below. In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer and to facilitate the technical personnel in the field to further understand the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described in combination with the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments, and does not constitute a limitation on its rights. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0018] An automatic liquid sealing device for closed loading of trains, comprising a vertical pipe body 5 and a sealing cap 7,

[0019] A liquid sealing mechanism is provided at the bottom end of the vertical tube body, and a lifting mechanism of the liquid sealing mechanism is provided at the top of the vertical tube body. The liquid sealing mechanism includes a liquid sealing plate 10 that can be sealed with the bottom end of the vertical tube body, and the lifting mechanism includes a push rod motor 1 fixed at the top end of the vertical tube body, and the push rod motor is connected to the liquid sealing plate downward through a push rod shaft 2. A shaft sleeve 3 is provided on the upper part of the push rod shaft 2.

[0020] The sealing cap is slidably mounted on the vertical tube body through a vertical tube guide sleeve 6. An upper limit stop ring 4 and a lower limit stop ring 13 are provided on the vertical tube body to limit the upward and downward movement of the sealing cap. A proximity switch 11 for detecting the position of the sealing cap is provided on the upper limit stop ring. The sealing cap is provided with a sensing plate 12 that cooperates with the above-mentioned proximity switch.

[0021] The upper limit retaining ring 4 and the lower limit retaining ring 13 both adopt a hoop structure and are fastened to the vertical pipe by bolts, and the positions of the upper limit retaining ring 4 and the lower limit retaining ring can be adjusted.

[0022] The push rod shaft is coaxially arranged with the vertical tube body.

[0023] The sealing plate is upwardly provided with a guide block 9 which can extend into the vertical pipe body.

[0024] A guide ring 8 is provided at the lower part of the push rod shaft near the sealing plate to keep the push rod shaft coaxial with the vertical tube body.

[0025] A liquid inlet pipe is arranged on the side wall of the vertical pipe body close to the lifting mechanism.

[0026] The sealing cap can slide up and down along the vertical pipe body.

[0027] When not loading, the sealing plate blocks the bottom of the vertical pipe to prevent residual liquid from dripping out.

[0028] During loading, the vertical tube drives the sealing cap to descend at the same time. When the sealing cap is located at the tank mouth, the vertical tube continues to descend for a distance. The upper limit retaining ring on the vertical tube presses the sealing cap and triggers the proximity switch at the same time. The mechanism controlling the lifting and lowering of the vertical tube stops working and the vertical tube stops descending (the sealing cap is in a compressed state at this time). The electric push rod starts to work, and the push rod axis moves downward, pushing the sealing plate downward to open the vertical tube. The electric push rod extends to the set length and stops moving. At this time, loading begins. After loading is completed, the vertical tube rises, the upper limit retaining ring proximity switch disengages from the induction plate, the electric push rod is recovered, and the sealing plate moves upward and is in close contact with the vertical tube mouth. After the electric push rod is recovered in place, it stops working. At this time, the whole process is completed, and a small amount of liquid in the vertical tube will also be sealed in the vertical tube. When the next loading is completed, it can be loaded into the next tank truck.

[0029] The whole process is fully automated; its structure is simple; it can meet various tank loading requirements; the vertical pipe automatically seals the residual liquid and does not cause pollution. It improves safety and avoids direct contact between personnel and toxic and hazardous substances!

[0030] 1. Reduce the labor intensity of personnel;

[0031] 2. No need to manually hang the liquid barrel, ensuring personnel safety;

[0032] 3. Avoid residual liquid in the pipe from dripping on the ground and causing environmental pollution;

[0033] 4. Prevent residual liquid from dripping onto pedestrians passing under the vertical pipe and causing personal injury.

[0034] The utility model has a simple and feasible structure and accurate and reliable movement.

Claims

1. An automatic liquid sealing device for closed loading of trains, comprising a vertical pipe body and a sealing cap, characterized in that: A liquid sealing mechanism is provided at the bottom end of the vertical tube body, and a lifting mechanism of the liquid sealing mechanism is provided at the top of the vertical tube body. The liquid sealing mechanism includes a liquid sealing plate that can be sealed with the bottom end of the vertical tube body, and the lifting mechanism includes a push rod motor fixed on the top end of the vertical tube body, and the push rod motor is connected to the liquid sealing plate downward through the push rod shaft; The sealing cap is slidably mounted on the vertical tube body through a vertical tube guide sleeve. An upper limit stop ring and a lower limit stop ring are provided on the vertical tube body to limit the upward and downward movement of the sealing cap. A proximity switch for detecting the position of the sealing cap is provided on the upper limit stop ring. The sealing cap is provided with a sensing plate that cooperates with the above-mentioned proximity switch.

2. The automatic liquid sealing device for closed loading of trains according to claim 1, characterized in that: The push rod shaft is coaxially arranged with the vertical tube body.

3. The automatic liquid sealing device for closed loading of trains according to claim 1, characterized in that: The sealing plate is upwardly provided with a guide block which can extend into the vertical pipe body.

4. The automatic liquid sealing device for closed loading of trains according to claim 2, characterized in that: A guide ring for keeping the push rod shaft coaxial with the vertical tube body is arranged at the lower part of the push rod shaft near the liquid sealing plate.

5. The automatic liquid sealing device for closed loading of trains according to claim 1, characterized in that: A liquid inlet pipe is arranged on the side wall of the vertical pipe body close to the lifting mechanism.

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