Sodium hypochlorite circulating pump with anti-corrosion function

Abstract

The utility model discloses a sodium hypochlorite circulating pump with an anti-corrosion function, which belongs to the technical field of fluid transportation and comprises a base plate, the top of the base plate is fixedly connected with a protective bin, and an inner cavity of the protective bin is fixedly connected with a special-shaped bin used for guiding sodium hypochlorite solution to flow. The end, away from the protection bin, of the special-shaped bin is fixedly connected with a feeding pipeline used for leading a sodium hypochlorite solution into the special-shaped bin, the top of the special-shaped bin is fixedly connected with a discharging pipeline used for enabling the sodium hypochlorite solution to flow out, the inner magnetic rotor and the impeller are pushed to rotate through the magnetic field effect, non-contact power transmission is achieved, and the shaft seal leakage problem is avoided; according to the device, the outer magnetic rotor drives the inner magnetic rotor and the impeller to rotate, non-contact power transmission is achieved, the problem of frequent leakage caused by strong corrosivity of sodium hypochlorite in a traditional mechanical seal is thoroughly solved, environmental pollution and potential safety hazards caused by solution leakage are eliminated, meanwhile, the downtime caused by equipment maintenance is shortened, and the service life of the device is prolonged. And the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of fluid transport technology, specifically to a sodium hypochlorite circulating pump with anti-corrosion function. Background Technology

[0002] Sodium hypochlorite solution is widely used in many fields such as chemical production, sewage treatment, and disinfection due to its strong oxidizing properties. Sodium hypochlorite is highly corrosive, which places strict requirements on the materials of the equipment it comes into contact with. Ordinary metal materials are easily corroded, and even some corrosion-resistant alloy materials may experience corrosion and wear under long-term contact with sodium hypochlorite solution, affecting the normal operation and service life of the equipment.

[0003] However, currently, most traditional sodium hypochlorite pumps use ordinary horizontal centrifugal pumps with mechanical seals. Due to the highly corrosive nature of sodium hypochlorite, the sealing material of the mechanical seal gradually corrodes during long-term contact with the sodium hypochlorite solution, leading to a decline in sealing performance and frequent leakage. Once leakage occurs, it not only causes sodium hypochlorite solution to leak out, polluting the production environment, but also poses safety hazards, such as potential burns to personnel. Moreover, to ensure the normal operation of the pump, the mechanical seal needs to be maintained or replaced regularly. Frequent maintenance and replacement not only consume a lot of manpower and resources but also result in high repair and maintenance costs. Therefore, this utility model provides a sodium hypochlorite circulating pump with anti-corrosion function to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a sodium hypochlorite circulating pump with anti-corrosion function to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a base plate, a protective chamber fixedly connected to the top of the base plate, a shaped chamber for guiding the flow of sodium hypochlorite solution fixedly connected to the inner cavity of the protective chamber, a feed pipe for introducing sodium hypochlorite solution into the shaped chamber fixedly connected to the end of the shaped chamber away from the protective chamber, a discharge pipe for the outflow of sodium hypochlorite solution fixedly connected to the top of the shaped chamber, an impeller rotatably connected to the inner cavity of the shaped chamber, an inner magnetic rotor for driving the impeller to rotate rotatably connected to the inner cavity of the shaped chamber, and an outer magnetic rotor for driving the inner magnetic rotor to rotate rotatably connected to the inner cavity of the protective chamber. When the outer magnetic rotor rotates, the magnetic field drives the inner magnetic rotor and impeller to rotate, achieving non-contact power transmission and avoiding shaft seal leakage problems.

[0006] Furthermore, a conical rod for guiding the sodium hypochlorite solution is fixedly installed in the inner cavity of the impeller, and an oblique groove is provided at the end of the conical rod away from the impeller.

[0007] Furthermore, a motor for driving the external magnetic rotor to rotate is fixedly connected to the top of the substrate, and a transmission rod is fixedly connected to one side of the motor, and the transmission rod passes through the protective chamber and is fixedly connected to the external magnetic rotor.

[0008] Furthermore, the inner cavity of the inner magnetic rotor is fixedly connected to a fixed rod for driving the impeller to rotate, and the end of the fixed rod away from the transmission rod is fixedly connected to the impeller.

[0009] Furthermore, an annular plate is fixedly connected to the outer wall of the protective chamber, and a cooling pipe for cooling the protective chamber is fixedly installed in the inner cavity of the annular plate. The inner cavity of the cooling pipe is filled with condensate for cooling, and heat sinks for heat dissipation are fixedly connected to the outer wall of the annular plate.

[0010] Furthermore, a connecting box is fixedly connected to the end of the irregularly shaped chamber near the feed pipe. A filter screen for intercepting impurities is fixedly installed inside the connecting box, and the end of the connecting box away from the irregularly shaped chamber is fixedly connected to the feed pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This device drives the inner magnetic rotor and impeller to rotate through the outer magnetic rotor, realizing non-contact power transmission. This completely avoids the frequent leakage problems caused by the strong corrosiveness of sodium hypochlorite in traditional mechanical seals, eliminates the environmental pollution and safety hazards caused by solution leakage, and also reduces downtime caused by equipment maintenance, thereby improving production efficiency.

[0013] 2. By setting up cooling pipes, inclined pipes, and heat sinks, the condensate inside the cooling pipes circulates and continuously absorbs heat from the protective chamber, accelerating the heat dissipation rate and ensuring that the temperature inside the protective chamber remains within a reasonable range. This creates a stable working environment for the magnetic rotor, ensuring its stable performance and avoiding problems such as a decrease in magnetic properties due to high temperatures. As a result, the entire pump unit can operate stably and reliably for a long time. Attached Figure Description

[0014] Figure 1 This is a structural diagram of a sodium hypochlorite circulating pump with anti-corrosion function.

[0015] Figure 2 A cross-sectional view of the protective chamber in a sodium hypochlorite circulating pump with anti-corrosion function;

[0016] Figure 3 This is a structural diagram of the impeller in a sodium hypochlorite circulating pump with anti-corrosion function.

[0017] Figure 4A cross-sectional view of the connecting box in a sodium hypochlorite circulating pump with anti-corrosion function;

[0018] Figure 5 This is a structural diagram of a cooling pipe in a sodium hypochlorite circulating pump with corrosion-resistant properties.

[0019] In the diagram: 1. Base plate; 2. Protective chamber; 3. Irregularly shaped chamber; 4. Feed pipe; 5. Discharge pipe; 6. Impeller; 7. Inner magnetic rotor; 8. Outer magnetic rotor; 10. Annular plate; 401. Connecting box; 402. Filter screen; 601. Conical rod; 602. Angled groove; 701. Fixing rod; 702. Bearing; 801. Motor; 802. Transmission rod; 803. Through hole; 1001. Cooling pipe; 1002. Angled pipe; 1003. Heat sink. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figures 1-5 A sodium hypochlorite circulating pump with anti-corrosion function includes a base plate 1. A protective chamber 2 is fixedly connected to the top of the base plate 1, protecting the internal components from external dust, debris, etc. A shaped chamber 3 for guiding the flow of sodium hypochlorite solution is fixedly connected to the inner cavity of the protective chamber 2. An inlet pipe 4 for introducing sodium hypochlorite solution into the shaped chamber 3 is fixedly connected to the end of the shaped chamber 3 away from the protective chamber 2. An outlet pipe 5 for the outflow of sodium hypochlorite solution is fixedly connected to the top of the shaped chamber 3. A blade is rotatably connected to the inner cavity of the shaped chamber 3. The impeller 6 rotates at high speed, generating centrifugal force to cause the solution to flow within the shaped chamber 3. The solution is drawn in through the feed pipe 4, then pressurized by centrifugal force and discharged through the discharge pipe 5, thus realizing the transportation and circulation of the solution. The inner cavity of the shaped chamber 3 is rotatably connected to an inner magnetic rotor 7 for driving the impeller 6 to rotate. The inner cavity of the protective chamber 2 is rotatably connected to an outer magnetic rotor 8 for driving the inner magnetic rotor 7 to rotate. When the outer magnetic rotor 8 rotates, the magnetic field drives the inner magnetic rotor 7 and the impeller 6 to rotate, realizing non-contact power transmission and avoiding shaft seal leakage problems.

[0022] Please see Figure 3The inner cavity of the impeller 6 is fixedly equipped with a conical rod 601 for guiding the sodium hypochlorite solution. The end of the conical rod 601 away from the impeller 6 is provided with an inclined groove 602. Specifically, there are multiple inclined grooves 602 located on one side of the conical rod 601. The flow of sodium hypochlorite solution through the inclined grooves 602 improves the pressure distribution inside the impeller 6, so that the sodium hypochlorite solution is more evenly affected by pressure changes during the flow process, and reduces the occurrence of local low-pressure areas.

[0023] Please see Figures 1-2 A motor 801 for driving the external magnetic rotor 8 to rotate is fixedly connected to the top of the base plate 1. A transmission rod 802 is fixedly connected to one side of the motor 801, and the transmission rod 802 passes through the protective chamber 2 and is fixedly connected to the external magnetic rotor 8. Specifically, the inner cavity of the protective chamber 2 is provided with a through hole 803 for providing the transmission rod 802 to rotate, and the transmission rod 802 is rotatably connected to the inner cavity of the through hole 803. Through the drive motor 801, its output shaft drives the external magnetic rotor 8 to rotate via the transmission rod 802.

[0024] Please see Figures 1-2 The inner cavity of the inner magnetic rotor 7 is fixedly connected to a fixed rod 701 for driving the impeller 6 to rotate. The end of the fixed rod 701 away from the transmission rod 802 is fixedly connected to the impeller 6. Specifically, the outer wall of the inner magnetic rotor 7 is fixedly connected to a bearing 702, which is rotatably connected to the inner cavity of the irregular chamber 3 through the bearing 702. When the inner magnetic rotor 7 rotates, the fixed rod 701 drives the impeller 6 to rotate, ensuring that the impeller 6 rotates synchronously with the inner magnetic rotor 7, thereby realizing the pushing and conveying of sodium hypochlorite solution. At the same time, the bearing 702 can withstand the radial and axial loads generated by the inner magnetic rotor 7 during rotation and distribute them evenly on the wall of the irregular chamber 3, avoiding damage to the inner magnetic rotor 7 due to excessive load and extending the service life of the inner magnetic rotor 7 and the entire pump.

[0025] Example 2: Please refer to Figure 5A sodium hypochlorite circulating pump with anti-corrosion function differs from Embodiment 1 in that an annular plate 10 is fixedly connected to the outer wall of the protective chamber 2, and a cooling pipe 1001 for cooling the protective chamber 2 is fixedly installed in the inner cavity of the annular plate 10. The inner cavity of the cooling pipe 1001 is filled with condensate for cooling, and a heat sink 1003 for heat dissipation is fixedly connected to the outer wall of the annular plate 10. Specifically, during use, the condensate inside the cooling pipe 1001 can absorb heat from the protective chamber 2 through heat exchange, preventing the protective chamber from cooling down. To prevent excessively high temperatures inside the protective chamber 2 from adversely affecting the performance and lifespan of the magnetic rotor and ensuring stable pump operation, multiple heat sinks 1003 are arranged in an array on the outer wall of the annular plate 10. By increasing the contact area between the annular plate 10 and the air, the heat sinks 1003 allow more heat to be transferred to the air, accelerating the heat dissipation speed and enabling the heat inside the protective chamber 2 to dissipate more quickly.

[0026] More specifically, one side of the cooling pipe 1001 is fixedly connected to the inclined pipe 1002, and the inner cavity of the cooling pipe 1001 is in a vacuum state, thereby lowering the boiling point of the refrigerant in the inner cavity of the cooling pipe 1001. This causes the vapor generated after the refrigerant boils upon heating to flow upward into the inner cavity of the inclined pipe 1002, adhere to the inner cavity of the inclined pipe 1002 and condense into water droplets, which then flow downward again. This cycle allows the refrigerant in the cooling pipe 1001 to be continuously renewed, ensuring that there is always low-temperature refrigerant to absorb the heat of the protective chamber 2, thereby ensuring that the protective chamber 2 can continuously dissipate heat and avoid heat accumulation.

[0027] Please see Figure 4 A connecting box 401 is fixedly connected to one end of the irregularly shaped chamber 3 near the feed pipe 4. A filter screen 402 for intercepting impurities is fixedly installed in the inner cavity of the connecting box 401. The end of the connecting box 401 away from the irregularly shaped chamber 3 is fixedly connected to the feed pipe 4. Before the sodium hypochlorite solution enters the irregularly shaped chamber 3, the filter screen 402 can intercept any solid impurities that may exist in the sodium hypochlorite solution, such as particles, debris, and rust, preventing these impurities from entering the irregularly shaped chamber 3 with the solution. This avoids the impurities from causing wear, blockage, or jamming of the impeller 6, thus shortening the service life of the impeller 6.

[0028] Working principle: First, the feed pipe 4 and the discharge pipe 5 are connected to the feeding and receiving pipes respectively. The output shaft of the drive motor 801 drives the outer magnetic rotor 8 to rotate through the transmission rod 802. When the outer magnetic rotor 8 rotates, it drives the impeller 6 to rotate through the inner magnetic rotor 7 and the fixed rod 701. The high-speed rotation of the impeller generates centrifugal force, causing the solution to flow in the irregular chamber 3. The solution is drawn in from the feed pipe 4 and then pressurized by centrifugal force and discharged from the discharge pipe 5, thus realizing the pushing and conveying of sodium hypochlorite solution. During the conveying process, the cooling pipe 1001 can absorb the heat of the protective chamber 2 through its internal condensate and transfer it to the annular plate 10. After the temperature of the plate rises, the heat is transferred to the air through the heat sink 1003, which accelerates the heat dissipation and allows the heat in the protective chamber 2 to dissipate more quickly, enabling the device to work continuously.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sodium hypochlorite circulating pump with anti-corrosion function, comprising a base plate (1), characterized in that: A protective chamber (2) is fixedly connected to the top of the substrate (1). A shaped chamber (3) for guiding the flow of sodium hypochlorite solution is fixedly connected to the inner cavity of the protective chamber (2). A feed pipe (4) for introducing sodium hypochlorite solution into the shaped chamber (3) is fixedly connected to the end of the shaped chamber (3) away from the protective chamber (2). A discharge pipe (5) for the outflow of sodium hypochlorite solution is fixedly connected to the top of the shaped chamber (3). An impeller (6) is rotatably connected to the inner cavity of the shaped chamber (3). An inner magnetic rotor (7) for driving the impeller (6) to rotate is rotatably connected to the inner cavity of the shaped chamber (3). The inner magnetic rotor (7) and the impeller (6) are driven to rotate by the magnetic field, which can realize non-contact power transmission and avoid shaft seal leakage. An outer magnetic rotor (8) for driving the inner magnetic rotor (7) to rotate is rotatably connected to the inner cavity of the protective chamber (2).

2. A sodium hypochlorite circulating pump with anti-corrosion function according to claim 1, characterized in that: The inner cavity of the impeller (6) is fixedly installed with a tapered rod (601) for guiding sodium hypochlorite solution. The tapered rod (601) has an inclined groove (602) at the end away from the impeller (6).

3. A sodium hypochlorite circulating pump with anti-corrosion function according to claim 1, characterized in that: The top of the substrate (1) is fixedly connected to a motor (801) for driving the outer magnetic rotor (8) to rotate. A transmission rod (802) is fixedly connected to one side of the motor (801), and the transmission rod (802) passes through the protective chamber (2) and is fixedly connected to the outer magnetic rotor (8).

4. A sodium hypochlorite circulating pump with anti-corrosion function according to claim 3, characterized in that: The inner cavity of the inner magnetic rotor (7) is fixedly connected to a fixed rod (701) for driving the impeller (6) to rotate. The end of the fixed rod (701) away from the transmission rod (802) is fixedly connected to the impeller (6).

5. A sodium hypochlorite circulating pump with anti-corrosion function according to claim 1, characterized in that: The outer wall of the protective chamber (2) is fixedly connected to an annular plate (10), and a cooling pipe (1001) for cooling the protective chamber (2) is fixedly installed in the inner cavity of the annular plate (10). The inner cavity of the cooling pipe (1001) is filled with condensate for cooling, and a heat sink (1003) for heat dissipation is fixedly connected to the outer wall of the annular plate (10).

6. A sodium hypochlorite circulating pump with anti-corrosion function according to claim 1, characterized in that: The irregularly shaped bin (3) is fixedly connected to a connecting box (401) at one end near the feed pipe (4). A filter screen (402) for intercepting impurities is fixedly installed in the inner cavity of the connecting box (401), and the end of the connecting box (401) away from the irregularly shaped bin (3) is fixedly connected to the feed pipe (4).

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