Feeding system

Abstract

The utility model belongs to the technical field of chemical production equipment, and particularly relates to a feeding system, in particular to a vacuum negative pressure feeding system. The utility model provides a feeding system. The feeding system comprises a feeding tank, a storage tank and a vacuum pump, and the feeding tank communicates with the storage tank and the vacuum pump; a first valve is arranged on a communicating pipeline between the vacuum pump and the feeding tank, and a second valve is arranged on a communicating pipeline between the storage tank and the feeding tank. According to the technical scheme, after the feeding tank is vacuumized through the vacuum pump, negative pressure is generated between the feeding tank and the storage tank, and liquid in the storage tank is driven by the negative pressure to enter the feeding tank through the communicating pipeline; if the communicating pipeline or the tank body is damaged, negative pressure driving cannot be generated, and liquid in the corresponding storage tank cannot flow into the communicating pipeline / the feeding tank, so that leakage is effectively avoided; the technical defect that transmission cannot be stopped in time when leakage occurs during transmission of corrosive liquid, so that dangers are avoided is overcome.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of chemical production equipment, in particular to a feeding system, and more particularly to a vacuum negative pressure feeding system. BACKGROUND

[0002] In the process of chemical production, some strong corrosive liquid raw materials are often used. When corrosive liquid raw materials are needed, they are transmitted from the liquid storage tank to the reaction raw material tank through pipelines.

[0003] In the prior art, the transmission of corrosive liquid is usually carried out by pumping or gas pressure. If the pipeline or other connecting components are damaged and corrosive liquid leaks during transmission, safety and environmental accidents may occur, causing injuries and environmental pollution accidents.

[0004] Therefore, it is necessary to develop a feeding system to solve the technical defects that the transmission of corrosive liquid cannot be stopped in time when leakage occurs, thereby avoiding dangerous accidents. CONTENT OF THE INVENTION

[0005] Therefore, it is necessary to develop a feeding system to solve the technical defects that the transmission of corrosive liquid cannot be stopped in time when leakage occurs, thereby avoiding dangerous accidents.

[0006] The present application provides a feeding system, which comprises a feeding tank, a storage tank and a vacuum pump, wherein the feeding tank is in communication with the storage tank and the vacuum pump respectively;

[0007] The communication pipeline between the vacuum pump and the feeding tank is provided with a first valve, and the communication pipeline between the storage tank and the feeding tank is provided with a second valve.

[0008] In one embodiment, the feeding system further comprises a pressure gauge in communication with the discharge pipeline of the storage tank, and the communication pipeline between the pressure gauge and the storage tank is provided with a third valve.

[0009] In one embodiment, the feeding system further comprises a pressure stabilizing ventilation part in communication with the discharge pipeline sleeve of the storage tank, and the communication pipeline between the pressure stabilizing ventilation part and the discharge pipeline sleeve is provided with a fourth valve.

[0010] In one embodiment, the pressure stabilizing ventilation part is a nitrogen ventilation part or an air ventilation part.

[0011] In one embodiment, the discharge port of the storage tank is provided with a discharge valve.

[0012] In one of the embodiments, the storage tank is provided with an exhaust port.

[0013] In one of the embodiments, an exhaust pipeline connected with the exhaust port is provided with a fifth valve.

[0014] In one of the embodiments, the feeding system further comprises a tail gas collecting part which is communicated with the exhaust port.

[0015] In summary, the application provides a feeding system, comprising a feeding tank, a storage tank and a vacuum pump, the feeding tank is communicated with the storage tank and the vacuum pump respectively; a first valve is arranged in the communication pipeline between the vacuum pump and the feeding tank, and a second valve is arranged in the communication pipeline between the storage tank and the feeding tank. In the technical solution provided by the application, the feeding tank is pumped to vacuum by the vacuum pump, and then negative pressure is generated between the feeding tank and the storage tank, and the liquid in the storage tank is driven to enter the feeding tank through the communication pipeline by the negative pressure; if the communication pipeline or the tank body is damaged, the negative pressure driving will not be generated, and the liquid in the corresponding storage tank will not flow into the communication pipeline / feeding tank, thereby effectively avoiding the leakage. The feeding system provided by the application solves the technical defect that the transmission of corrosive liquid in the prior art cannot be stopped in time when leakage occurs, thereby avoiding the occurrence of danger. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0017] Figure 1 In the technical solution provided by the embodiments of the application, a structural schematic diagram of a feeding system is provided.

[0018] Among them, the vacuum pump 1, the feeding tank 2, the storage tank 3, the first valve 4, the second valve 5, the pressure gauge 6, the third valve 7, the pressure stabilizing vent part 8, the fourth valve 9, the discharge valve 10, the exhaust port 11, the fifth valve 12 and the tail gas collecting part 13. DETAILED DESCRIPTION

[0019] The application provides a feeding system, which is used to solve the technical defect that the transmission of corrosive liquid in the prior art cannot be stopped in time when leakage occurs, thereby avoiding the occurrence of danger.

[0020] In order to make the above objectives, features and advantages of the present application more clear and understandable, the detailed description of the embodiments of the present application is made below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in many different ways from what is described herein, and should not be construed as being limited to the embodiments set forth herein, but should be understood to include all possible embodiments that can be made within the scope of the present application.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0022] In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes, and should not be construed as indicating or implying relative importance or implying a specific number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0023] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Please see Figure 1 This application provides a feeding system comprising: a feeding tank 2, a storage tank 3, and a vacuum pump 1. The feeding tank 2 is connected to both the storage tank 3 and the vacuum pump 1. A first valve 4 is provided in the connecting pipeline between the vacuum pump 1 and the feeding tank 2, and a second valve 5 is provided in the connecting pipeline between the storage tank 3 and the feeding tank 2. This feeding system solves the technical deficiency in existing technologies where the transmission of corrosive liquids cannot be stopped in time in the event of a leak, thus failing to prevent danger.

[0027] In the technical solution provided in this application embodiment, a first valve 4 is provided in the connecting pipeline between the vacuum pump 1 and the feed tank 2. When feeding is required, the first valve 4 is opened, and the vacuum pump 1 draws the inside of the feed tank 2 into a vacuum state through the connecting pipeline between the vacuum pump 1 and the feed tank 2.

[0028] Open the second valve 5 that connects the feed tank 2 and the storage tank 3. Under negative pressure, the liquid inside the storage tank 3 enters the feed tank 2 through the connecting pipe between the feed tank 2 and the storage tank 3.

[0029] The process of liquid entering the feed tank 2 from the storage tank 3 is driven by negative pressure. If the connecting pipeline or the feed tank 2 is damaged, negative pressure will not be generated. Accordingly, the liquid will not flow from the storage tank 3 to the feed tank 2, effectively avoiding the danger of liquid leakage caused by equipment damage.

[0030] The feeding system provided in this embodiment further includes a pressure gauge 6, which is connected to the discharge pipe of the storage tank 3. A third valve 7 is provided on the connecting pipe between the pressure gauge 6 and the storage tank 3. By opening the third valve 7, the pressure gauge 6 can measure the pressure inside the storage tank 3 in real time. When the pressure exceeds a preset safety threshold, timely intervention can be implemented, effectively avoiding the risk of liquid leakage due to excessive pressure and ensuring production safety.

[0031] To better ensure air pressure balance during the feeding process and prevent the generation of negative pressure in the storage tank 3, the feeding system provided in this embodiment further includes a pressure-stabilizing venting unit 8, which is connected to the discharge pipeline of the storage tank 3. A fourth valve 9 is provided on the connecting pipeline between the pressure-stabilizing venting unit 8 and the discharge pipeline. Opening the fourth valve 9 allows air to be supplied to the discharge pipeline of the storage tank 3, ensuring that no vacuum state is generated in the storage tank 3 and its discharge pipeline. This ensures the air pressure balance of the overall structure of the feeding system, preventing liquid in the storage tank 3 from entering the vacuum pump 1 due to excessive pressure and causing a hazard.

[0032] While ensuring the pressure stabilizing effect of the pressure stabilizing vent 8, it also takes into account that the gas introduced through the pressure stabilizing vent 8 will not react with the liquid, the introduced gas will not be stable on its own and will not cause combustion or explosion, and the gas cost is low. In the technical solution provided in the embodiments of this application, the pressure stabilizing vent 8 is a nitrogen vent or an air vent.

[0033] To further enhance safety, the storage tank 3 is equipped with a discharge valve 10 at its outlet. The storage tank 3 can only discharge material after the discharge valve 10 is opened, thus further improving discharge safety.

[0034] To ensure pressure balance in storage tank 3 and prevent explosion when internal pressure is too high, the storage tank 3 is equipped with an exhaust port 11 in the technical solution provided in this application embodiment. When internal pressure in storage tank 3 is too high, the exhaust port 11 is opened to release gas, ensuring pressure stability in storage tank 3.

[0035] To facilitate the opening and closing of the exhaust port 11, in the technical solution provided in this application embodiment, the exhaust pipe connected to the exhaust port 11 is provided with a fifth valve 12.

[0036] The feeding system provided in this application embodiment further includes an exhaust gas collection unit 13, which is connected to an exhaust port 11. The exhaust gas collection unit 13 can collect and treat the corrosive gases released from the exhaust port 11 to prevent the direct emission of potentially hazardous gaseous substances mixed in the exhaust gas, thus preventing danger or pollution.

[0037] In summary, this application provides a feeding system comprising: a feeding tank, a storage tank, and a vacuum pump. The feeding tank is connected to both the storage tank and the vacuum pump. A first valve is provided in the connecting pipe between the vacuum pump and the feeding tank, and a second valve is provided in the connecting pipe between the storage tank and the feeding tank. In the technical solution provided by this application, after the feeding tank is evacuated to a vacuum state by the vacuum pump, a negative pressure is generated between the feeding tank and the storage tank. Liquid in the storage tank is driven by this negative pressure to enter the feeding tank through the connecting pipe. If damage to the connecting pipe or the tank body is detected, the negative pressure will not be generated, and correspondingly, liquid in the storage tank will not flow into the connecting pipe / feeding tank, effectively preventing leakage. The feeding system provided by this application solves the technical defect of existing technologies where corrosive liquid transmission cannot be stopped in time when leakage occurs, thus failing to prevent danger.

[0038] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. Furthermore, other implementation methods can be derived from the above embodiments, allowing for structural and logical substitutions and changes without departing from the scope of this disclosure.

[0039] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A feeding system, characterized in that, The feeding system includes: a feeding tank, a storage tank, and a vacuum pump, wherein the feeding tank is connected to the storage tank and the vacuum pump respectively; The connecting pipeline between the vacuum pump and the feed tank is equipped with a first valve, and the connecting pipeline between the storage tank and the feed tank is equipped with a second valve.

2. The feeding system according to claim 1, characterized in that, The feeding system also includes: A pressure gauge is connected to the discharge pipeline of the storage tank, and a third valve is provided in the pipeline connecting the pressure gauge and the storage tank.

3. The feeding system according to claim 1 or 2, characterized in that, The feeding system further includes a pressure stabilizing and venting section, which is connected to the discharge pipe sleeve of the storage tank, and the connecting pipe between the pressure stabilizing and venting section and the discharge pipe sleeve is equipped with a fourth valve.

4. The feeding system according to claim 3, characterized in that, The pressure-stabilizing ventilation section is either a nitrogen ventilation section or an air ventilation section.

5. The feeding system according to claim 3, characterized in that, The storage tank is equipped with a discharge valve at its outlet.

6. The feeding system according to claim 5, characterized in that, The storage tank is equipped with an exhaust port.

7. The feeding system according to claim 6, characterized in that, The exhaust pipe connected to the exhaust port is equipped with a fifth valve.

8. The feeding system according to claim 7, characterized in that, The feeding system also includes: An exhaust gas collection unit is connected to the exhaust port.

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