Vacuum buffer tank

Abstract

The utility model relates to a vacuum buffer tank which comprises a buffer tank body. A gas phase outlet is formed in the top of the buffer tank body; a liquid outlet is formed in the bottom of the buffer tank body; a tangential feeding port is formed in the middle of the side wall of one side of the buffer tank body. The tangential feeding mode is adopted, materials can be effectively prevented from directly impacting the tank body, damage caused by impact is reduced, meanwhile, feeding distribution is facilitated, gas-liquid two-phase feeding rapid separation is promoted, and entrainment is avoided. A feeding distributor is not needed in the tank body adopting tangential feeding, the whole structure is simple, the cost is low, and the maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of buffer tanks, in particular to a vacuum buffer tank. Background Art

[0002] Vacuum buffer tanks are widely used in the chemical industry, particularly in processes requiring negative pressure operation with high-density media. Their primary functions include buffering pressure to maintain system pressure stability; separating gas and liquid to prevent liquid carryover from the vacuum pump, which could damage equipment and facilities; and stabilizing the vacuum level to maintain stable system operation. Vacuum buffer tanks are typically located between the tower overhead reflux tank and the vacuum pump, close to the pump.

[0003] Existing vacuum buffer tanks have complex internal structures. For example, some have an interceptor plate welded near the bottom, with multiple rows of tapered drainage holes running through it. Some also have at least one partition plate installed within the buffer chamber to assist in gas-liquid separation. This complex internal structure not only increases costs, but also increases the risk of corrosive media corroding internal components during long-term operation, leading to lengthy and costly maintenance. Summary of the Invention

[0004] In view of the above problems, the purpose of the present invention is to provide a vacuum buffer tank, which achieves the purpose of gas-liquid separation by adopting a unique feeding method, namely a tangential feeding method, and prevents the vacuum pump from carrying liquid.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] The utility model proposes a vacuum buffer tank, which comprises a buffer tank body; a gas phase outlet is provided on the top of the buffer tank body; a liquid discharge port is provided on the bottom of the buffer tank body; and a tangential feed port is provided in the middle of a side wall of one side of the buffer tank body.

[0007] Furthermore, an upper outlet of a liquid level gauge is provided on the upper portion of the side wall on the other side of the buffer tank body, and a lower outlet of the liquid level gauge is provided on the lower portion.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] This utility model adopts a tangential feeding method, which can effectively prevent the material from directly impacting the tank body, reducing damage caused by impact. It also facilitates the distribution of the feed, promotes the rapid separation of the gas and liquid phases, and avoids entrainment. The tank body using tangential feeding does not require a feed distributor, and the overall structure is simple, low cost, and easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0011] Among them, the figure marks are: 1-tangential feed port; 2-gas phase outlet; 3-drain port; 4-upper outlet of liquid level gauge; 5-lower outlet of liquid level gauge; 6-buffer tank body. DETAILED DESCRIPTION

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] It should be noted that, in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation.

[0014] See attached Figure 1 The vacuum buffer tank proposed in the present invention includes a buffer tank body 6; wherein, a gas phase outlet 2 is provided at the top of the buffer tank body 6; a liquid discharge port 3 is provided at the bottom of the buffer tank body 6; and a tangential feed port is provided in the middle area of the right side wall of the buffer tank body 6.

[0015] In this embodiment, an upper outlet 4 of the liquid level gauge is provided in the upper area of the left side wall of the buffer tank body 6, and a lower outlet 5 of the liquid level gauge is provided in the lower area of the left side wall of the buffer tank body 6. The liquid level gauge outlet monitors the liquid level in the tank through a remote liquid level gauge, accurately controls the liquid level in the tank, prevents the liquid level from being brought into the vacuum pump when it is too high, and prevents the gas phase from entering the dense discharge system when the liquid level is too low.

[0016] In the present invention, the feed port of the tank body is tangential feed, and the material enters the buffer tank body 6 from the tangential feed port 1, and the gas and liquid are separated in the tank. The gas is discharged from the gas phase outlet 2 on the tank top and enters the vacuum pump inlet. The liquid is stored in the tank. A remote liquid level gauge and an on-site magnetic flap liquid level gauge are set on the tank body to monitor the liquid height in the tank and control the liquid level at 10-40%. The liquid is discharged to the upstream tower top reflux tank regularly through the discharge port 3 according to the liquid level situation, and a coil (not shown in the figure) is provided on the tank body for heating to prevent freezing in winter.

[0017] The gas phase carries a small amount of liquid phase and enters the tank through the tangential feed port 1 set in the middle area of the right side wall of the buffer tank body 6. The medium enters the tank tangentially and rotates along the tank wall to form centrifugal force. Under the action of centrifugal force, the medium can quickly separate the gas and liquid phases.

[0018] Matters not described in detail in this utility model are known technologies.

[0019] The embodiments described above are merely descriptions of preferred implementation methods of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A vacuum buffer tank, characterized in that: It includes a buffer tank body; a gas phase outlet is provided on the top of the buffer tank body; a liquid discharge port is provided at the bottom of the buffer tank body; and a tangential feed port is provided in the middle of the side wall of one side of the buffer tank body; An upper outlet for a liquid level gauge is provided on the upper portion of the side wall on the other side of the buffer tank body, and a lower outlet for a liquid level gauge is provided on the lower portion.

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