Novel vacuum water diversion device

Abstract

The utility model discloses a novel vacuum water diversion device which comprises a gas-water separation tank, a vacuum pump, a controller and an electromagnetic valve assembly, the controller is electrically connected with the vacuum pump and the electromagnetic valve assembly, a liquid level control sensor is arranged in the middle of the gas-water separation tank, and the electromagnetic valve assembly comprises an exhaust valve, a vacuum valve and a pressure release valve. The exhaust valve is connected between the gas-water separation tank and equipment to be vacuumized through a gas pipe, the vacuum valve is connected between the gas-water separation tank and the vacuum pump through a gas pipe, and the pressure release valve is connected between the gas-water separation tank and the atmospheric environment through a gas pipe; the controller controls the working states of the vacuum pump and the electromagnetic valve assembly according to the read signals of the liquid level control sensor. The vacuum water diversion device can be widely applied to any area needing vacuum water diversion, is not limited to a centrifugal pump, is clear in control logic, convenient to use, safe and reliable, does not need additional intervention of a user, and can automatically discharge liquid in the air-water separation tank after one-time vacuum water diversion is completed so as to guarantee frequent repeated use of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum water diversion devices, in particular to a novel vacuum water diversion device, which is mainly used for priming a pump device to ensure smooth starting of the pump device. Background Art

[0002] Vacuum water diversion refers to a water diversion method that uses vacuum to draw water from a water level below the pump shaft to above the top of the pump casing, and fills the water pump and the suction pipe. It is widely used in large-flow and low-head pump devices, and has the characteristics of fast pump start-up and safe and reliable operation.

[0003] Traditional vacuum water diversion devices generally have the disadvantages of being large in size and low in automation. The gas-water separation tank is the core component of the vacuum water diversion device, which mainly serves to separate the device to be evacuated and the vacuum pump and protect the vacuum pump. Generally speaking, the gas-water separation tank needs to be manually drained after running for a period of time. The vacuum water diversion device does not have the function of continuous and frequent start and stop. In addition, the traditional gas-water separation device is large in size and low in automation. With the increasing requirements for automation and intelligence in the production process, the transformation of the traditional vacuum water diversion device is imperative. Utility Model Content

[0004] The purpose of the utility model is to solve the problems of large volume and low automation of the gas-water separation device mentioned in the above background technology, and to propose a new type of vacuum water diversion device, which can be used for vacuuming and at the same time judge whether the water diversion is completed through a liquid level control sensor. It can be started frequently and has the function of automatically sensing the liquid level height in the gas-water separation tank, and is suitable for the actual needs of current industrial production.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A novel vacuum water diversion device comprises an air-water separation tank, a vacuum pump, a controller and a solenoid valve assembly, wherein the controller is electrically connected to the vacuum pump and the solenoid valve assembly, and is characterized in that the air-water separation tank comprises a tank body and a tank cover, wherein the tank cover is fixedly connected to the tank body, and a sealing gasket is arranged between the tank cover and the tank body, and a liquid level control sensor is arranged in the middle of the tank body, and the liquid level control sensor is connected to the tank cover;

[0007] The solenoid valve assembly includes an exhaust valve, a vacuum valve and a pressure relief valve. The exhaust valve is connected between the air-water separation tank and the equipment to be vacuumed through an air pipe, the vacuum valve is connected between the air-water separation tank and the vacuum pump through an air pipe, and the pressure relief valve is connected between the air-water separation tank and the atmospheric environment through an air pipe;

[0008] The controller controls the working state of the vacuum pump and the electromagnetic valve assembly according to the read liquid level control sensor signal to realize the vacuuming and drainage functions of the device.

[0009] As a further description of the above technical solution:

[0010] The liquid level control sensor is two float level switches connected in series and placed up and down. When the liquid level in the tank rises to the float position, the float level switch is connected to send a signal to the controller, thereby stopping the vacuum pump. The actuator of the float level switch uses two floats, which significantly improves the reliability of the entire device and avoids the failure of the first float causing the failure of the entire device.

[0011] As a further description of the above technical solution:

[0012] It also includes a vacuum pressure gauge, which is installed on the tank cover and is used to display the vacuum degree inside the separation tank, so as to facilitate the air tightness inspection of the equipment during use.

[0013] As a further description of the above technical solution:

[0014] The lower end side of the tank body is connected with a drainage hole, and a one-way valve is installed in the drainage hole to discharge the liquid in the tank.

[0015] As a further description of the above technical solution:

[0016] The bottom of the tank body is connected with a sewage pipe, the end of the sewage pipe is screwed with an end cover, and the end cover is sealed by threaded connection. When too much impurities accumulate in the tank and affect the operation of the equipment, the impurities can be removed through the sewage pipe.

[0017] As a further description of the above technical solution:

[0018] The tank body is a cylindrical stainless steel tank, and supporting feet are welded on the bottom of the tank body.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] 1. In the utility model, the device can be widely used in any area where vacuum water diversion is required, not limited to centrifugal pumps, and has clear control logic, is easy to use, safe and reliable, and does not require additional user intervention. It can automatically discharge the liquid in the air-water separation tank after completing one vacuum water diversion to ensure frequent repeated use of the device.

[0021] 2. In the utility model, the device has the characteristics of simple structure and convenient operation. It is easy to install and maintain. Operators can operate it without special training, saving human resources and time costs.

[0022] 3. In the utility model, the liquid level control sensor is two float level switches connected in series and placed up and down. When the liquid level in the tank rises to the float position, the float level switch is connected to send a signal to the controller, thereby stopping the vacuum pump; the actuator of the liquid level control sensor adopts two floats, which significantly improves the reliability of the overall device and avoids the failure of the first float causing the failure of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a novel vacuum water diversion device provided according to an embodiment of the utility model is shown;

[0024] Figure 2 A schematic front view of a novel vacuum water diversion device provided according to an embodiment of the utility model is shown;

[0025] Figure 3 A cross-sectional schematic diagram of a novel vacuum water diversion device provided according to an embodiment of the utility model is shown.

[0026] Legend:

[0027] 1. Exhaust valve; 2. Vacuum pressure gauge; 3. Tank cover; 31. Sealing gasket; 4. Tank body; 41. Liquid level control sensor; 5. Check valve; 6. Drain pipe; 7. Support foot; 8. Vacuum valve; 9. Pressure relief valve; 10. Vacuum pump. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-3 The utility model provides a technical solution: a new vacuum water diversion device, including a gas-water separation tank, a vacuum pump 10, a controller and a solenoid valve assembly. The controller is electrically connected to the vacuum pump 10 and the solenoid valve assembly. The controller controls the working state of the vacuum pump 10 and the solenoid valve assembly according to the signal read from the liquid level control sensor 41 to realize the vacuuming and drainage functions of the device. Among them, the vacuum pump 10 is a vane vacuum pump, the controller is a PLC controller, and the solenoid valve assembly adopts a normally closed solenoid valve, so that precise control can be achieved, efficient separation can be achieved, and high separation efficiency can be obtained.

[0030] Specifically, Figure 1As shown, the solenoid valve assembly includes an exhaust valve 1, a vacuum valve 8 and a pressure relief valve 9. The exhaust valve 1 is connected between the air-water separation tank and the equipment to be vacuumed through an air pipe to control the realization of the vacuum function. The vacuum valve 8 is connected between the air-water separation tank and the vacuum pump 10 through an air pipe. The pressure relief valve 9 is connected between the air-water separation tank and the atmospheric environment through an air pipe to complete the internal pressure relief of the tank body 4 after vacuuming.

[0031] Specifically, Figure 3 As shown, the gas-water separation tank includes a tank body 4 and a tank cover 3. The tank body 4 is a stainless steel tank. A support leg 7 is welded to the bottom of the tank body 4. The tank cover 3 is fixedly connected to the tank body 4. By covering the tank cover 3, a closed space is formed inside the gas-water separation tank. A sealing gasket 31 is arranged between the tank cover 3 and the tank body 4 to ensure sealing.

[0032] Specifically, Figure 3 As shown, a liquid level control sensor 41 is arranged in the middle of the tank body 4, and the liquid level control sensor 41 is connected to the tank cover 3. The liquid level control sensor 41 is two float switch sensors placed in parallel and placed up and down, which are installed in the center of the gas-water separation tank, thereby improving accuracy, comparing the two sensor signals to more accurately determine the liquid level height, and enhancing reliability. If one sensor fails or fails, the other sensor continues to work to ensure the normal operation of the whole, and expands the measurement range. Due to the up and down placement, one exceeds the measurement range, and the other can continue to measure. For example, when the liquid level in the tank rises to the float position, the float liquid level switch is connected to send a signal to the controller, so that the vacuum pump 10 stops working; the actuator of the liquid level control sensor 41 uses two floats, which significantly improves the reliability of the overall device and avoids the failure of the first float causing the failure of the overall device.

[0033] Furthermore, if Figure 1 As shown, a vacuum pressure gauge 2 is also installed on the tank cover 3. The vacuum pressure gauge 2 is helpful for checking the pressure changes in the tank. If abnormalities occur, timely adjustments and countermeasures can be taken to ensure the stability of the pressure in the tank and increase safety.

[0034] Specifically, Figure 2 As shown, a drainage hole is connected to the side of the lower end of the tank body 4, and a one-way valve 5 is installed in the drainage hole. The one-way valve 5 is a flap-type one-way valve. When there is liquid in the tank body 4 and the pressure relief valve 9 is open, the one-way valve 5 will open under the action of the liquid pressure to discharge the liquid in the tank. When the liquid is emptied, the one-way valve 5 will automatically close due to the action of gravity.

[0035] Specifically, Figure 2 As shown, the bottom of the tank body 4 is connected to a drain pipe 6, and the end of the drain pipe 6 is screwed with an end cap through a thread. During maintenance, the end cap is unscrewed to discharge the sediment in the tank.

[0036] The device has the characteristics of simple structure and convenient operation. It is easy to install and maintain. Operators can operate it without special training, saving human resources and time costs.

[0037] Working principle: When in use, first, open the exhaust valve 1 and the vacuum valve 8, connect the vacuum pump 10, the air-water separation tank and the equipment to be vacuumed, and the vacuum pump 10 will work to draw the air and water in the equipment to be vacuumed into the tank body 4 in turn. As the water level in the tank rises to the liquid level control sensor 41 at the bottom, a signal is sent to the controller, and the controller controls the two sets of solenoid valves and the vacuum pump 10 to close in sequence to complete the vacuuming work. The tank is in a negative pressure state, and then the pressure relief valve 9 is opened to relieve the pressure inside the tank body 4. At the same time, the one-way valve 5 will open under the action of liquid pressure to discharge the liquid in the tank. When the liquid is emptied, the pressure relief valve 9 is closed, and the one-way valve 5 will automatically close due to the action of gravity; wherein, during the vacuuming process, if the bottom liquid level control sensor 41 fails, the upper liquid level control sensor 41 can continue to measure to ensure the normal operation of the device and enhance reliability.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel vacuum water diversion device, comprising a gas-water separation tank, a vacuum pump (10), a controller and a solenoid valve assembly, wherein the controller is electrically connected to the vacuum pump (10) and the solenoid valve assembly, and is characterized in that: The gas-water separation tank comprises a tank body (4) and a tank cover (3), wherein the tank cover (3) is fixedly connected to the tank body (4), and a sealing gasket (31) is arranged between the tank cover (3) and the tank body (4), and a liquid level control sensor (41) is arranged in the middle of the tank body (4), and the liquid level control sensor (41) is connected to the tank cover (3); The solenoid valve assembly comprises an exhaust valve (1), a vacuum valve (8) and a pressure relief valve (9); the exhaust valve (1) is connected between the air-water separation tank and the equipment to be vacuumed through an air pipe; the vacuum valve (8) is connected between the air-water separation tank and the vacuum pump (10) through an air pipe; and the pressure relief valve (9) is connected between the air-water separation tank and the atmospheric environment through an air pipe; The controller controls the working states of the vacuum pump (10) and the electromagnetic valve assembly according to the signal read from the liquid level control sensor (41), so as to realize the vacuuming and drainage functions of the device.

2. A novel vacuum water diversion device according to claim 1, characterized in that: The liquid level control sensor (41) is two float switch sensors connected in parallel and placed one above the other.

3. A novel vacuum water diversion device according to claim 1, characterized in that: It also comprises a vacuum pressure gauge (2), wherein the vacuum pressure gauge (2) is installed on the tank cover (3).

4. A novel vacuum water diversion device according to claim 1, characterized in that: The lower end side of the tank body (4) is connected to a drainage hole, and a one-way valve (5) is installed in the drainage hole.

5. A novel vacuum water diversion device according to claim 1, characterized in that: The bottom of the tank body (4) is connected to a sewage discharge pipe (6), and the end of the sewage discharge pipe (6) is screwed with an end cap via a thread.

6. A novel vacuum water diversion device according to claim 1, characterized in that: The tank body (4) is a stainless steel tank, and a support leg (7) is welded to the bottom of the tank body (4).

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