Automatic water replenishing Markov bottle without interrupting water supply

Abstract

The utility model discloses an automatic water replenishing Markov bottle without interrupting water supply, which comprises a Markov bottle body, a water outlet pipe arranged at the bottom of the Markov bottle body, a second valve arranged on the water outlet pipe and used for supplying water to a target at a constant water head, an air inlet pipe extending into the bottom of the bottle body is arranged in the Markov bottle body, and the air inlet pipe extends out of the bottle and is communicated with the atmosphere. A vacuumizing device is arranged at the top of the Markov bottle body, a water replenishing device is arranged at the upper part of the Markov bottle body, and the Markov bottle body is respectively provided with a water replenishing sensor and a water replenishing stopping sensor. Starting from the basic principle of the Markov bottle, a water supply device and a vacuum valve air extractor are additionally arranged, the air pressure of the lower end of an air inlet pipe of the Markov bottle is equal to the atmospheric pressure, the water injection speed and the air extraction speed are controlled, and the water supplementing process in the operation process of the Markov bottle is achieved. The Mariotte bottle can be replenished with water under the condition that water supply is not interrupted, and the defect that water needs to be replenished to the Mariotte bottle after a water supply valve is closed under the condition that the water quantity of a traditional Mariotte bottle is insufficient is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural implement technical field, especially an automatic water replenishing Mariotte bottle without interrupting water supply. BACKGROUND

[0002] Mariotte bottle can be used below Figure 1 It is shown in the drawing that ① is a Mariotte bottle body, ② is an air inlet pipe, ③ is an air outlet pipe, and ④ is a water outlet; when water supply to the outside world, the liquid level in the Mariotte bottle drops until a negative pressure is formed inside, the air inlet pipe at the bottom of the Mariotte bottle starts to intake air, and when the cavity in the bottle is insufficient, the water is used as a water inlet to replenish water to the Mariotte bottle. When the Mariotte bottle is working normally, the valve of the air outlet pipe is closed. When the valve is opened, it has two effects: one is to balance the air pressure when the Mariotte bottle is replenished with water, and the other is to balance the air pressure when the Mariotte bottle is used as a common communicating vessel. The balanced liquid level is the liquid level in the bottle. The water outlet is used to replenish water to the test tube. The right side is a test tube connected with the water outlet of the Mariotte bottle, and the water level in the open tube at the upper end of the test tube can be adjusted by the Mariotte bottle. When the water surface in the test tube is lower than the bottom end of the air inlet pipe, the gas pressure at the bottom end of the air inlet pipe is less than the gas pressure of the water surface in the test tube, that is, less than one atmosphere, and the Mariotte bottle will start to replenish water to the test tube, and at the same time, the gas bubbles escaping from the bottom end of the air inlet pipe rise to the upper cavity of the water surface to supplement air. The volume of the supplemented gas is equal to the volume of the water flowing out of the water outlet; with the replenishment of water, the water surface in the test tube gradually rises, and when the water surface rises to the level of the bottom end of the air inlet pipe, the Mariotte bottle stops replenishing water, and at this time, the gas pressure at the bottom end of the air inlet pipe is one atmosphere, reaching a balanced state. When the water in the test tube is reduced due to evaporation, the water level is lower than the bottom end of the air inlet pipe, and the gas pressure at the bottom end of the air inlet pipe will be lower than the atmospheric pressure again, and the Mariotte bottle will continue to replenish water to the test tube, so that the water level approaches the bottom end of the air inlet pipe until it is flush, achieving the purpose of constant head water replenishment.

[0003] When the water level of the Mariotte bottle is below the air inlet pipe ②, the constant head principle is invalid, and at this time, water needs to be supplied to the Mariotte bottle. The traditional method is to open the air outlet pipe ③ to manually supply water to the Mariotte bottle. At this time, the water outlet ④ needs to be closed, and at this time, the Mariotte bottle cannot be used to continuously supply water to the test tube. Although there is a patent technology for automatic water replenishment of the Mariotte bottle, the water outlet ④ still needs to be closed during water replenishment, and continuous water supply cannot be achieved. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide an automatic water replenishing Mariotte bottle without interrupting water supply, which can replenish water to the Mariotte bottle without interrupting water supply, and overcome the problem that the traditional Mariotte bottle needs to close the water supply valve and then replenish water to the Mariotte bottle when the water amount is insufficient.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] The utility model provides an automatic water replenishing marvins bottle of uninterrupted water supply, including marvins bottle body, be equipped with the water outlet pipe at marvins bottle body bottom, be equipped with the second valve on the water outlet pipe, and the second valve is used for the target to carry out the water head supply, be equipped with the air inlet pipe of entering the bottle body bottom in marvins bottle body, and the air inlet pipe stretches out bottle and communicates with the atmosphere, be equipped with the vacuumizing device at marvins bottle body top, be equipped with the water replenishing device on marvins bottle body upper portion, and marvins bottle body is equipped with water replenishing sensor and stop water replenishing sensor respectively, and water replenishing sensor and stop water replenishing sensor are electrically connected with the input end of controller, and the vacuumizing device and water replenishing device are controlled by the controller.

[0007] The water replenishing sensor is arranged below the stop water replenishing sensor.

[0008] The vacuumizing device includes a vacuum valve connected to the bottle wall of the marvins bottle body, the vacuum valve is connected with a third valve, the third valve is communicated with the external atmosphere when opened to release the negative pressure in the bottle, and the third valve is connected to a vacuum chamber.

[0009] The vacuum chamber is provided with a stroke push rod at the end, the stroke push rod is pushed and pulled by the controller to perform vacuumizing, and the vacuum valve and the third valve are controlled by the controller.

[0010] The marvins bottle body is provided with a pressure gauge, and the pressure gauge is electrically connected with the input end of the controller.

[0011] The water replenishing device includes a first valve connected to the bottle wall of the marvins bottle body, a flowmeter and a controllable water pump are arranged at the rear end of the first valve, and the input end of the controllable water pump extends into a water tank.

[0012] The first valve and the controllable water pump are controlled by the output end of the controller, and the flowmeter is electrically connected with the input end of the controller.

[0013] The automatic water replenishing marvins bottle of uninterrupted water supply has the following beneficial effects:

[0014] 1) When the marvins bottle is short of water, the marvins bottle can automatically replenish water;

[0015] 2) During the water replenishing process of the marvins bottle, the water supply operation does not need to be interrupted, and the water supply can be continuous. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further described in connection with the drawings and embodiments:

[0017] Figure 1 It is the marvins bottle water supply schematic view to test tube;

[0018] Figure 2 It is the basic principle view of marvins bottle;

[0019] Figure 3The utility model discloses an automatic water replenishing marshall bottle structure without interrupting water supply.

[0020] In the drawing: marshall bottle body 1, pressure gauge 2, vacuum valve 3, air inlet pipe 4, water outlet pipe 5, vacuum chamber 6, stroke push rod 7, controllable water pump 8, water cylinder 9, first valve 10, flowmeter 11, water replenishing sensor 12, water replenishing stopping sensor 13, controller 14, second valve 15, third valve 16. Specific embodiments

[0021] Embodiment 1:

[0022] As shown in Figure 3 An automatic water replenishing marshall bottle without interrupting water supply, comprising marshall bottle body 1, the bottom of marshall bottle body 1 is provided with water outlet pipe 5, water outlet pipe 5 is provided with second valve 15, second valve 15 is used for carrying out constant head water supply to target, marshall bottle body 1 is provided with air inlet pipe 4 extending into the bottom of bottle body, air inlet pipe 4 extends out of the bottle and communicates with atmosphere, the top of marshall bottle body 1 is provided with vacuum device, the upper portion of marshall bottle body 1 is provided with water replenishing device, marshall bottle body 1 is respectively provided with water replenishing sensor 12 and water replenishing stopping sensor 13, water replenishing sensor 12 and water replenishing stopping sensor 13 are electrically connected with the input end of controller 14, vacuum device and water replenishing device are controlled by controller 14.

[0023] When second valve 15 is opened to carry out constant head water supply to target, when the water in bottle body is lower than water replenishing sensor 12, controller 14 receives water replenishing sensor 12 and controls water replenishing device to carry out water replenishing operation, and simultaneously controls vacuum device to act to control the air pressure in bottle to facilitate water replenishing.

[0024] The position of the above-mentioned water replenishing sensor 12 is lower than water replenishing stopping sensor 13.

[0025] The above-mentioned vacuum device comprises vacuum valve 3 connected with the bottle wall of marshall bottle body 1, vacuum valve 3 is connected with third valve 16, third valve 16 communicates with external atmosphere when being opened and is used for releasing the negative pressure in bottle, third valve 16 is connected with vacuum chamber 6, the tail end of vacuum chamber 6 is provided with stroke push rod 7, stroke push rod 7 is pushed and pulled by controller 14 to carry out vacuumizing, vacuum valve 3 and third valve 16 are controlled by controller 14.

[0026] The above-mentioned marshall bottle body 1 is provided with pressure gauge 2, and pressure gauge 2 is electrically connected with the input end of controller 14.

[0027] The pressure value of pressure gauge 2 is detected to judge the air pressure in bottle during water replenishing, so that the control of vacuum valve 3 and stroke push rod 7 by controller 14 is facilitated, and stroke push rod 7 can be controlled by electromagnetic valve.

[0028] The aforementioned water replenishment device includes a first valve 10 connected to the wall of the Marshall bottle body 1. A flow meter 11 and a controllable water pump 8 are provided at the rear end of the first valve 10. The input end of the controllable water pump 8 extends into the water tank 9.

[0029] The first valve 10 and the controllable water pump 8 mentioned above are controlled by the output terminal of the controller 14, and the flow meter 11 is electrically connected to the input terminal of the controller 14.

[0030] The flow rate during water replenishment is controlled by the controllable water pump 8, which is detected by the flow meter 11. The controllable water pump 8 can be a variable frequency water pump, which is electrically connected to the frequency converter. The controller 14 inputs an analog signal to the frequency converter to control the speed of the variable frequency water pump, thereby controlling the flow rate.

[0031] Example 2:

[0032] Starting from the basic principle of the Marvin flask, a water supply and vacuum valve extraction device are added to ensure that the air pressure at the lower end of the Marvin flask inlet pipe ② is equal to atmospheric pressure, while controlling the water injection speed. v 1 and the air extraction speed v 2. To realize the process of water replenishment during the operation of the Marsh bottle.

[0033] This invention enables the replenishment of water to the Marshall bottle without interrupting the water supply, overcoming the traditional method of requiring the water supply valve to be closed and the bottle replenished when the water level is insufficient.

[0034] The key to achieving this function lies in maintaining a dynamic balance between the internal air pressure and water volume of the Marble bottle during water supply, thus meeting the constant pressure head requirements of the Marble bottle. This can be achieved by deriving the dynamic relationship between the volume change ΔV1 during vacuuming and the water injection volume ΔV2, and then controlling this relationship with a controller. Figure 2 As shown in the image.

[0035] The relationship between the two is derived below:

[0036] First, according to the ideal gas equation:

[0037] ;

[0038] In the formula, p is the pressure of the ideal gas, V is the volume of the ideal gas, n is the amount of substance of the gas, T is the thermodynamic temperature of the ideal gas, and R is the ideal gas constant.

[0039] During vacuuming, the gas volume changes, but the total amount of substance remains unchanged. Therefore, the right side of the above equation remains unchanged during vacuuming and water supply. t At time 0, the pressure inside the Marsh bottle is p 0, volume is V 0, the height from the water surface to the bottom of the air intake pipe ② ish 0, at a certain time period, the following equation is true:

[0040] ;

[0041] where, p is the liquid density, g is the gravity acceleration, p A is the atmospheric pressure, p’ is the gas pressure in the marangoni bottle at the end of the time period, dV 2 is the water injection volume in the time period, dV 1 is the gas volume increase when the gas is pumped out in the time period, S is the cross-sectional area of the marangoni bottle, and Vs is the volume above the bottom of the water outlet, including the liquid and the gas.

[0042] The above equation is further derived, and p’ is eliminated in the process, and the relationship between dV 1 and dV 2 is obtained. The derivation process is as follows:

[0043] ;

[0044] ;

[0045] In the above equation, eliminate V 0, and ignore the quadratic term to obtain:

[0046] ;

[0047] Suppose that during this process, the temperature of the vacuum-pumped gas and the water injection speed, i.e. dV2=v2dt, dV1=v1dt, are as follows:

[0048] ;

[0049] Integrate the above equation to obtain:

[0050] ;

[0051] According to the above equation, use the controller to sample and control the water injection speed to keep it at 10 cm 3 / s, with a sampling interval of 5 seconds. By dynamically changing the vacuum-pumping speed to meet the above equation, the marangoni bottle can meet the working requirements.

[0052] As shown in the automatic water replenishment marangoni bottle without interrupting water supply in the Figure 3 , the specific use includes the following steps:

[0053] 1) Open the first water injection valve 10, close the vacuum valve 3, close the second water supply valve 15, inject water into the Marsh bottle, and after the water injection is completed, close the first valve 10 and open the second valve 15 to supply water to the target at a constant head.

[0054] 2) When the water level drops to the position of the water replenishment sensor 12, a water replenishment command is sent via the controller 14, the first valve 10 opens, and the controllable water pump 8 injects water into the system. The speed of the controllable water pump is controlled by the reading of the flow meter 11 to maintain a flow rate of 10cm. 3 The water injection rate is [value] / s. Simultaneously with the opening of the first valve 10, the vacuum valve 3 opens, and the controllable stroke push rod 7 uniformly pumps air out of the vacuum chamber piston to satisfy the integral expression. The control chamber samples the pressure of the Martens bottle every 5 seconds. p 0. Intake pipe 4 or more container volume V s ;

[0055] 3) When the liquid level reaches the position of the stop water supply sensor 13, the controller stops the water supply operation, closes the first valve 10 and the vacuum valve 3, and opens the third valve 16 to release the internal negative pressure. Then the controllable stroke push rod 7 is moved to the initial position for use in the next water supply operation.

Claims

1. An automatic water replenishing Marinoni bottle without interruption of water supply, characterized in that, The utility model relates to a constant water head water supply device for target, including the bottle body (1) of mason jar, the bottom of bottle body (1) is equipped with the water outlet pipe (5), be equipped with the second valve (15) on the water outlet pipe (5), the second valve (15) is used for the constant water head water supply of target, be equipped with the air inlet pipe (4) of entering the bottle body bottom in bottle body (1), the air inlet pipe (4) stretches out of bottle and is communicated with atmosphere, the top of bottle body (1) is equipped with the vacuumizing device, the upper portion of bottle body (1) is equipped with the water replenishing device, bottle body (1) is equipped with water replenishing sensor (12) and stop water replenishing sensor (13) respectively, water replenishing sensor (12) and stop water replenishing sensor (13) are electrically connected with the input end of controller (14), and the vacuumizing device and water replenishing device are controlled by controller (14).

2. The automatic refillable marv bottle without water supply interruption according to claim 1, characterized in that, The water replenishing sensor (12) is arranged below the stop water replenishing sensor (13).

3. The automatic refillable marv bottle without water supply interruption according to claim 2, characterized in that, The vacuumizing device includes a vacuum valve (3) connected to the bottle wall of the mason jar (1), the vacuum valve (3) is connected to a third valve (16), the third valve (16) is communicated with the external atmosphere when opened to release the negative pressure in the bottle, and the third valve (16) is connected to a vacuum chamber (6).

4. The automatic refillable marv bottle without water supply interruption according to claim 3, characterized in that, The vacuum chamber (6) is provided with a stroke push rod (7) at the end, the stroke push rod (7) is pushed and pulled by the controller (14) to perform vacuumizing, and the vacuum valve (3) and the third valve (16) are controlled by the controller (14).

5. The automatic refillable marv bottle without water supply interruption according to claim 4, characterized in that, The mason jar (1) is provided with a pressure gauge (2) electrically connected to the input end of the controller (14).

6. The automatic refillable marv bottle without water supply interruption according to claim 5, characterized in that, The water replenishing device includes a first valve (10) connected to the bottle wall of the mason jar (1), a flowmeter (11) and a controllable water pump (8) are arranged at the rear end of the first valve (10), and the input end of the controllable water pump (8) is inserted into a water tank (9).

7. The automatic refillable marvian bottle without water supply interruption according to claim 6, characterized in that, The first valve (10) and the controllable water pump (8) are controlled by the output end of the controller (14), and the flowmeter (11) is electrically connected to the input end of the controller (14).

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