Fluorine-lined centrifugal pump

Abstract

The utility model discloses a fluorine-lined centrifugal pump, and relates to the technical field of centrifugal pumps. The device comprises a pump body, a liquid discharging unit used for discharging high-temperature corrosive substances is arranged on one side of the pump body, and an expansion tank in the liquid discharging unit is arranged below the pump body and communicated with the pump body; the cooling piece is arranged on the inner wall of the expansion tank; and the discharging piece is arranged in the expansion tank. According to the device, the liquid discharging unit is arranged, the volume expansion tank can contain high-temperature corrosive liquid remaining on the pump body, the cooling piece can cool the liquid, and the atomization phenomenon generated when the liquid is discharged is reduced. The two electromagnetic valves are arranged, so that accurate control over liquid inlet and outlet is achieved, the problem of atomization sputtering when an existing fluorine-lined centrifugal pump discharges residual liquid is effectively solved, the safety of operators is guaranteed, and the use safety and reliability of equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump technology, specifically to a fluoropolymer-lined centrifugal pump. Background Technology

[0002] Fluorine-lined centrifugal pumps have pump bodies made of fluoropolymer-lined material, which can effectively resist the erosion of various corrosive media and has excellent chemical stability and corrosion resistance, thus ensuring reliable operation of the pump in complex corrosive environments.

[0003] However, in actual use, after a fluoropolymer-lined centrifugal pump has transported a high-temperature corrosive liquid, some of this liquid will remain inside the pump body. If this residual liquid is discharged directly, the high-temperature liquid will atomize due to the sudden temperature change upon discharge. The atomized liquid particles will splash everywhere, potentially hitting the operators and posing a serious threat to their safety. This could easily lead to burns, chemical corrosion, and other injuries, creating a significant safety hazard in industrial production.

[0004] The main reason for this problem is that when the high-temperature corrosive liquid remaining inside the pump body is discharged, the temperature difference between the liquid and the ambient temperature is significant. The liquid rapidly vaporizes into steam, and the rapid expansion of the steam generates considerable pressure, propelling the liquid outward in a mist-like form. Simultaneously, the unstable flow velocity and direction of the discharged liquid further exacerbate the splashing, making it difficult for operators to avoid the spray and increasing the risk of injury. Therefore, we propose a fluoropolymer-lined centrifugal pump to solve these problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a fluoropolymer-lined centrifugal pump, which solves the problem that directly discharging these residual liquids causes atomization due to the sudden temperature change upon discharge. The atomized liquid particles splash everywhere, potentially hitting the operators and posing a serious threat to their safety. This can easily lead to burns, chemical corrosion, and other injuries, creating a significant safety hazard in industrial production.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a fluoropolymer-lined centrifugal pump, including a pump body, wherein a discharge unit for discharging high-temperature corrosive substances is provided on one side of the pump body, and the discharge unit includes an expansion tank, a cooling component, and a discharge component;

[0007] The expansion tank is located below the pump body and is connected to the pump body; the cooling element is located on the inner wall of the expansion tank and is used to condense the gas inside the expansion tank; the discharge element is located inside the expansion tank and is used to discharge the high-temperature corrosive substances remaining inside the pump body.

[0008] Preferably, the cooling component includes a cold water pipe, a water outlet pipe, and a heat exchange pipe;

[0009] The cold water pipe is located at the upper end of the expansion tank; the outlet pipe is located at the lower end of the expansion tank; the heat exchange tube is fixedly assembled on the inner wall of the expansion tank, one end of the heat exchange tube is connected to the cold water pipe, and the other end of the heat exchange tube is connected to the outlet pipe.

[0010] Preferably, the discharge component includes a collection hopper, an air guide pipe, and a liquid inlet.

[0011] The collecting hopper is fixedly assembled inside the expansion tank; the air guide pipe is located inside the collecting hopper; and the liquid inlet is located inside the air guide pipe.

[0012] Preferably, the discharge component further includes a venturi tube;

[0013] The Venturi tube is fixedly assembled above the air guide tube. The inner wall of the Venturi tube has an expanding-contracting structure from top to bottom. The Venturi tube is connected to the air guide tube.

[0014] Preferably, the discharge component further includes a blocking hopper and a connecting block;

[0015] The baffle is installed on the venturi tube and is used to prevent high-temperature corrosive liquid from entering the interior of the venturi tube; the connecting block is fixedly assembled at the bottom of the baffle and is fixedly assembled with the venturi tube.

[0016] Preferably, the expansion tank is provided with an inlet pipe at the top, one end of the inlet pipe is connected to the pump body, the other end of the inlet pipe is connected to the expansion tank, and a first solenoid valve is provided inside the inlet pipe.

[0017] Preferably, the bottom of the expansion tank is provided with a discharge pipe, which is connected to the collection hopper, and a second solenoid valve is provided inside the discharge pipe.

[0018] This utility model discloses a fluoropolymer-lined centrifugal pump, which has the following beneficial effects: The device incorporates a discharge unit with an expansion tank capable of holding residual high-temperature corrosive liquid from the pump body. A cooling element lowers the liquid temperature, reducing atomization during discharge. The venturi tube and other structures in the discharge unit stabilize the liquid's discharge velocity and direction, while a baffle prevents abnormal liquid entry into the venturi tube, further avoiding splashing. Two solenoid valves enable precise control of liquid inflow and outflow, effectively solving the atomization and splashing problem of residual liquid discharge in existing fluoropolymer-lined centrifugal pumps, ensuring operator safety, and improving the safety and reliability of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the drainage unit structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the pump body of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the expansion tank of this utility model.

[0024] In the diagram: 1. Pump body; 2. Drainage unit; 21. Expansion tank; 22. Cooling component; 221. Cold water pipe; 222. Water outlet pipe; 223. Heat exchanger pipe; 23. Discharge component; 231. Collection hopper; 232. Air guide pipe; 233. Venturi tube; 234. Baffle hopper; 235. Connecting block; 236. Liquid inlet; 24. Liquid inlet pipe; 25. First solenoid valve; 26. Discharge pipe; 27. Second solenoid valve. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] This application provides a fluoropolymer-lined centrifugal pump, which solves the problem that directly discharging these residual liquids causes atomization due to the sudden temperature change upon discharge. The atomized liquid particles splash everywhere, potentially hitting the pump operators and posing a serious threat to their safety. This can easily lead to burns, chemical corrosion, and other injuries, creating a significant safety hazard in industrial production.

[0027] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0028] This utility model provides, for example Figure 1-3The fluoropolymer-lined centrifugal pump shown.

[0029] Example 1: Includes a pump body 1, and a drainage unit 2 for discharging high-temperature corrosive substances is provided on one side of the pump body 1. The drainage unit 2 includes an expansion tank 21, a cooling component 22 and a discharge component 23.

[0030] An expansion tank 21 is located below the pump body 1 and is connected to the pump body 1; a cooling element 22 is located on the inner wall of the expansion tank 21 and is used to condense the gas inside the expansion tank 21; a discharge element 23 is located inside the expansion tank 21 and is used to discharge the high-temperature corrosive substances remaining inside the pump body 1.

[0031] Cooling component 22 includes cold water pipe 221, water outlet pipe 222 and heat exchange pipe 223;

[0032] The cold water pipe 221 is located at the upper end of the expansion tank 21; the outlet pipe 222 is located at the lower end of the expansion tank 21; the heat exchange pipe 223 is fixedly assembled on the inner wall of the expansion tank 21, one end of the heat exchange pipe 223 is connected to the cold water pipe 221, and the other end of the heat exchange pipe 223 is connected to the outlet pipe 222.

[0033] In this embodiment, the operation of the cooling component 22 during actual use is as follows: When the fluoropolymer-lined centrifugal pump finishes its work and starts the drainage process, the valve on the cold water pipe 221 is opened first, allowing cold water to flow from the cold water pipe 221 into the heat exchange pipe 223. The cold water flows within the heat exchange pipe 223, which is fixedly mounted on the inner wall of the expansion tank 21, and exchanges heat with the high-temperature gas and liquid inside the expansion tank 21. After absorbing heat, it is discharged through the outlet pipe 222. During this process, the continuous circulation of cold water can continuously reduce the temperature inside the expansion tank 21, pre-cooling the high-temperature corrosive liquid inside, reducing the atomization phenomenon caused by the sudden temperature change when the liquid is discharged, reducing the risk of liquid splashing, and condensing the atomized gas to further reduce the risk of splashing.

[0034] This utility model discloses a fluoropolymer-lined centrifugal pump. More specifically, based on Embodiment 1, it is described in the appendix... Figure 1 , 4 As shown.

[0035] Example 2: Includes a pump body 1, and a drainage unit 2 for discharging high-temperature corrosive substances is provided on one side of the pump body 1. The drainage unit 2 includes an expansion tank 21, a cooling component 22, and a discharge component 23.

[0036] An expansion tank 21 is located below the pump body 1 and is connected to the pump body 1; a cooling element 22 is located on the inner wall of the expansion tank 21 and is used to condense the gas inside the expansion tank 21; a discharge element 23 is located inside the expansion tank 21 and is used to discharge the high-temperature corrosive substances remaining inside the pump body 1.

[0037] The discharge component 23 includes a collection hopper 231, a vent pipe 232, and a liquid inlet 236. The collection hopper 231 is fixedly assembled inside the expansion tank 21. The vent pipe 232 is located inside the collection hopper 231. The liquid inlet 236 is located inside the vent pipe 232. The discharge component 23 also includes a Venturi tube 233. The Venturi tube 233 is fixedly assembled above the vent pipe 232. The inner wall of the Venturi tube 233 has an expanding-contracting structure from top to bottom. The Venturi tube 233 communicates with the vent pipe 232. The discharge component 23 also includes a blocking hopper 234 and a connecting block 235. The blocking hopper 234 is located inside the Venturi tube 232. On the inner tube 233, the baffle 234 is used to prevent high-temperature corrosive liquid from entering the interior of the venturi tube 233; the connecting block 235 is fixedly assembled at the bottom of the baffle 234 and the connecting block 235 is fixedly assembled with the venturi tube 233; the top of the expansion tank 21 is provided with an inlet pipe 24, one end of the inlet pipe 24 is connected to the pump body 1, and the other end of the inlet pipe 24 is connected to the expansion tank 21; the interior of the inlet pipe 24 is provided with a first solenoid valve 25; the bottom of the expansion tank 21 is provided with a discharge pipe 26, which is connected to the collection hopper 231; the interior of the discharge pipe 26 is provided with a second solenoid valve 27.

[0038] In this embodiment, when gas flows in the gas guide pipe 232 and enters the Venturi tube 233, the inner wall of the Venturi tube 233 has a special expansion-contraction structure from top to bottom. This causes the gas velocity to increase and the pressure to decrease when flowing through the constricted portion of the pipe diameter, and the flow velocity to decrease and the pressure to rise when flowing through the expanded portion of the pipe diameter. The pressure difference created by this pressure change causes the gas to continuously flow towards the direction of lower pressure. At the same time, the Venturi tube 233 is connected to the gas guide pipe 232, and with the collection function of the collection hopper 231, the liquid and gas can be stably and orderly guided to the direction of the discharge pipe 26. In addition, the blocking hopper 234 can effectively prevent high-temperature corrosive liquids from entering the Venturi tube 233 due to abnormal flow velocity fluctuations, ensuring the stable flow of fluid in the Venturi tube 233, thereby ensuring that all liquid and gas in the pump body 1 and the expansion tank 21 can be emptied.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fluoropolymer-lined centrifugal pump, comprising a pump body (1), characterized in that, A drainage unit (2) for discharging high-temperature corrosive substances is provided on one side of the pump body (1), and the drainage unit (2) includes: An expansion tank (21) is disposed below the pump body (1) and is connected to the pump body (1); Cooling element (22) is provided on the inner wall of expansion tank (21), and the cooling element (22) is used to condense the gas inside expansion tank (21); The discharge component (23) is located inside the expansion tank (21) and is used to discharge the high-temperature corrosive substances remaining inside the pump body (1).

2. The lined centrifugal pump of claim 1, wherein: The cooling component (22) includes: Cold water pipe (221) is installed at the upper end of expansion tank (21); The outlet pipe (222) is located at the lower end of the expansion tank (21); A heat exchange tube (223) is fixedly mounted on the inner wall of the expansion tank (21). One end of the heat exchange tube (223) is connected to the cold water pipe (221), and the other end of the heat exchange tube (223) is connected to the outlet water pipe (222).

3. The lined centrifugal pump of claim 1, wherein: The discharge component (23) includes: The collection hopper (231) is fixedly installed inside the expansion tank (21); An air guide pipe (232) is installed inside the collection hopper (231); The liquid inlet (236) is located inside the air duct (232).

4. The fluoropolymer-lined centrifugal pump according to claim 3, characterized in that: The discharge component (23) also includes: A venturi tube (233) is fixedly mounted above the air guide tube (232). The inner wall of the venturi tube (233) has an expanding-contracting structure from top to bottom. The venturi tube (233) is connected to the air guide tube (232).

5. The fluoropolymer-lined centrifugal pump according to claim 4, characterized in that: The discharge component (23) also includes: A blocking bucket (234) is provided on the venturi tube (233) to prevent high-temperature corrosive liquid from entering the interior of the venturi tube (233); A connecting block (235) is fixedly assembled at the bottom of the blocking bucket (234), and the connecting block (235) is fixedly assembled with the venturi tube (233).

6. The lined centrifugal pump of claim 1, wherein: The expansion tank (21) is provided with an inlet pipe (24) at the top. One end of the inlet pipe (24) is connected to the pump body (1), and the other end of the inlet pipe (24) is connected to the expansion tank (21). A first solenoid valve (25) is provided inside the inlet pipe (24).

7. The fluoropolymer-lined centrifugal pump according to claim 3, characterized in that: The bottom of the expansion tank (21) is provided with a discharge pipe (26), which is connected to the collection hopper (231). A second solenoid valve (27) is provided inside the discharge pipe (26).

Images