Vacuum tank level alarm device

Abstract

The utility model is suitable for liquid level monitoring equipment technical field provides a kind of vacuum tank liquid level alarm device, comprising: tank, its top is equipped with the negative pressure pipe that the inside of tank is supplied with negative pressure, the negative pressure pipe extends from the outside of the tank to the inside of the tank, the part of the negative pressure pipe in the inside of tank is equipped with air inlet hole;Slidingly connected in the inside of tank of the negative pressure pipe floating assembly, the floating assembly floats in the top of liquid in the inside of the tank, when the liquid level in the inside of tank reaches predetermined height, the floating assembly seals air inlet hole, whereby, the utility model is detected by setting a kind of device to the liquid in the inside of vacuum tank, ensure that when the liquid level in the inside of vacuum tank reaches predetermined height, the air inlet of negative pressure pipe is sealed automatically by detection device, to prevent the liquid in the inside of vacuum tank from exceeding predetermined height, protect the liquid level in the inside of vacuum tank.

Description

Technical Field

[0001] This utility model relates to the field of liquid level monitoring equipment technology, and in particular to a liquid level alarm device for a vacuum tank. Background Technology

[0002] A vacuum tank is a sealed container that creates and maintains a pressure below atmospheric pressure by evacuating the air inside. It mainly consists of a tank body, a vacuum pump, valves, and a control system. Its core function is to provide a controllable vacuum environment. It is widely used in industries such as food packaging, chemical dehydration, pharmaceutical drying, and electronic coating to prevent oxidation, accelerate evaporation, conduct specific reactions, or achieve product isolation and preservation. It is a key piece of equipment in modern industry for achieving special process conditions and ensuring product quality.

[0003] Traditional vacuum tanks have internal liquid level monitoring devices that can only monitor the liquid level inside the tank and trigger an alarm when the level is high, requiring manual intervention or a control module to handle the situation. However, this approach has the following problems: Manual processing involves a certain delay, which can easily lead to excessive material filling inside the vacuum tank, making it impossible to effectively control the liquid level. The control module can only close the vacuum valve. In the event of a valve or circuit failure, the vacuum valve cannot close, causing the material inside the vacuum tank to overflow, resulting in low safety.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] To address the aforementioned deficiencies, the purpose of this utility model is to provide a vacuum tank liquid level alarm device. This device can automatically detect the liquid level inside the vacuum tank, ensuring that when the liquid level inside the vacuum tank reaches a predetermined height, the detection device automatically seals the air intake of the negative pressure pipe, thereby preventing the liquid level inside the vacuum tank from exceeding the predetermined height and protecting the liquid level inside the vacuum tank.

[0006] To achieve the above objectives, this utility model provides a vacuum tank liquid level alarm device, comprising: The tank has a negative pressure pipe at its top for supplying negative pressure to the inside of the tank. The negative pressure pipe extends from the outside of the tank to the inside of the tank, and the portion of the negative pressure pipe inside the tank has an air intake hole. A floating assembly is slidably connected to the negative pressure pipe inside the tank. The floating assembly floats on top of the liquid inside the tank. When the liquid level inside the tank reaches a predetermined height, the floating assembly blocks the air intake.

[0007] In one embodiment, the portion of the negative pressure pipe located inside the tank is provided with a lower limit flange and an upper limit flange, the floating component is slidably connected between the upper limit flange and the lower limit flange, and the air intake is located at the bottom of the upper limit flange.

[0008] In one embodiment, the floating component includes: A sliding sleeve is slidably connected to the negative pressure pipe, and the sliding sleeve slides along the distance between the upper limit flange and the lower limit flange; A sealing head disposed inside the sliding sleeve blocks the air intake hole when the sliding sleeve moves to abut the bottom of the upper limit flange.

[0009] In one embodiment, the sliding sleeve has a sealing hole inside, and the sealing head is slidably connected to the inside of the sealing hole. When the sliding sleeve abuts against the bottom surface of the upper limit flange, the axis of the sealing head coincides with the axis of the air intake hole.

[0010] In one embodiment, the sealing hole extends to the top surface of the sliding sleeve, and a trigger head is slidably provided on the top of the sealing hole. When the sliding sleeve slides upward to abut against the bottom of the upper limit flange, the trigger head is forced to retract into the interior of the sealing hole.

[0011] In one embodiment, a thrust spring is provided between the trigger head and the sealing hole, and the trigger head extends out of the sealing hole under the action of the thrust spring.

[0012] In one embodiment, hydraulic fluid is provided inside the sealing hole between the sealing head and the trigger head. When the position of the trigger head changes, it pushes the sealing head to move accordingly.

[0013] In one embodiment, the sealing head seals the outer end of the sealing hole during sealing, and the gap between the sliding sleeve and the negative pressure pipe is sealed.

[0014] This utility model provides a vacuum tank liquid level alarm device, including: The tank body has a negative pressure pipe at the top for supplying negative pressure to the inside of the tank body. By setting the negative pressure pipe, a negative pressure effect can be supplied to the inside of the tank body, ensuring the negative pressure effect inside the vacuum tank. The negative pressure pipe extends from the outside of the tank body to the inside of the tank body. The part of the negative pressure pipe inside the tank body has a suction hole to ensure that the negative pressure pipe can be connected to the negative pressure supply mechanism, thereby effectively supplying negative pressure gas to the inside of the tank body. A floating component, slidably connected to the negative pressure pipe inside the tank, floats on top of the liquid inside the tank. By setting the floating component, the liquid level inside the tank can be detected. When the liquid level reaches a predetermined position, the position of the floating component reflects the liquid height. When the liquid level inside the tank reaches the predetermined height, the floating component blocks the suction port, ensuring that the vacuum tank will no longer utilize negative pressure to suck up material, thus preventing excessive liquid inside the vacuum tank and achieving automatic protection of the liquid level inside the vacuum tank. In summary, the technical effect of this utility model is to set up a device that automatically detects the liquid inside the vacuum tank, ensuring that when the liquid level inside the vacuum tank reaches a predetermined height, the detection device automatically blocks the suction port of the negative pressure pipe, thereby preventing the liquid inside the vacuum tank from exceeding the predetermined height and protecting the liquid level inside the vacuum tank. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the blocking state cross-sectional structure of this utility model; Figure 3 yes Figure 2 Enlarged structural diagram of section A; Figure 4 This is a schematic cross-sectional view of the released state of this utility model; Figure 5 yes Figure 4 Enlarged structural diagram of section B; Figure 6 This is a three-dimensional structural diagram of the sliding sleeve of this utility model; In the diagram, 1-feed inlet, 2-negative pressure pipe, 3-tank body, 4-discharge outlet, 5-lower limit flange, 6-upper limit flange, 7-suction hole, 8-sliding sleeve, 81-sealing hole, 82-sliding hole, 83-installation flange, 9-trigger head, 10-sealing head, 11-thrust spring. Detailed Implementation

[0016] 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 scope of protection of the present utility model.

[0017] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0018] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0019] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a vacuum tank liquid level alarm device, which includes a tank body 3, and a negative pressure pipe 2 at the top of the tank body 3 for supplying negative pressure to the inside of the tank body 3. By setting the negative pressure pipe 2, a negative pressure effect can be supplied to the inside of the tank body 3 to ensure the negative pressure effect inside the vacuum tank. The negative pressure pipe 2 extends from the outside of the tank body 3 to the inside of the tank body 3. The part of the negative pressure pipe 2 located inside the tank body 3 is provided with a suction hole 7 to ensure that the negative pressure pipe 2 can be connected to a negative pressure supply mechanism, thereby effectively supplying negative pressure gas to the inside of the tank body 3. A floating component is slidably connected to the negative pressure pipe 2 inside the tank 3. The floating component floats on top of the liquid inside the tank 3. By setting the floating component, the liquid level inside the tank 3 can be detected. When the liquid level inside the tank 3 reaches the predetermined height, the floating component blocks the suction port 7, ensuring that the vacuum tank will no longer use negative pressure to suck up material, thereby ensuring that the liquid inside the vacuum tank is not excessive and realizing automatic protection of the liquid level inside the vacuum tank. In order to ensure the feeding and discharging of the tank 3, a feed port 1 and a discharge port 4 are set on the tank 3 to ensure the feeding and discharging effect.

[0020] In one embodiment, in order to restrict the sliding position of the floating component, the portion of the negative pressure pipe 2 located inside the tank 3 is provided with a lower limiting flange 5 and an upper limiting flange 6. The floating component is slidably connected between the upper limiting flange 6 and the lower limiting flange 5. The suction hole 7 is located at the bottom of the upper limiting flange 6, ensuring that the floating component can block the suction hole 7 when it floats to the corresponding position of the upper limiting flange 6, thereby achieving mechanical blocking of the negative pressure pipe 2.

[0021] Specifically, in combination Figure 6 In order to achieve the connection and sliding effect between the floating component and the negative pressure pipe 2, the floating component includes: A sliding sleeve 8 is slidably connected to the negative pressure pipe 2. The sliding sleeve 8 slides along the distance between the upper limit flange 6 and the lower limit flange 5. The sliding sleeve 8 has a sliding hole 82 inside. The inner wall of the sliding hole 82 fits against the outer wall of the negative pressure pipe 2 to ensure the sliding effect of the sliding sleeve 8. The sealing head 10, located inside the sliding sleeve 8, seals the air intake 7 when the sliding sleeve 8 moves to the bottom of the upper limit flange 6. This ensures that the sealing head 10 can effectively seal the air intake 7, preventing the tank 3 from experiencing continuous negative pressure and thus preventing excessive liquid accumulation inside.

[0022] In one embodiment, in order to ensure the fit between the sealing head 10 and the sliding sleeve 8, a sealing hole 81 is provided inside the sliding sleeve 8. The sealing head 10 is slidably connected inside the sealing hole 81. When the sliding sleeve 8 abuts against the bottom surface of the upper limit flange 6, the axis of the sealing head 10 coincides with the axis of the air intake hole 7, ensuring that the sealing head 10 can effectively seal the air intake hole 7 at this time.

[0023] Furthermore, to ensure control of the sealing head 10, the sealing hole 81 extends to the top surface of the sliding sleeve 8. A trigger head 9 is slidably provided on the top of the sealing hole 81. When the sliding sleeve 8 slides upward to abut against the bottom of the upper limit flange 6, the trigger head 9 is forced back into the sealing hole 81. This ensures that when the sliding sleeve 8 slides to the top, the trigger head 9 is compressed into the sealing hole 81 under the action of buoyancy. Thus, the sealing head 10 is pressed by hydraulic fluid to seal the sealing hole 81, thereby sealing the air intake hole 7.

[0024] In one embodiment, combined with Figures 1-6To ensure the normal functioning of the trigger head 9 and the sealing head 10, a thrust spring 11 is provided between the trigger head 9 and the sealing hole 81. The trigger head 9 extends outside the sealing hole 81 under the action of the thrust spring 11, ensuring the reset force of the trigger head 9. Hydraulic fluid is provided inside the sealing hole 81 between the sealing head 10 and the trigger head 9, ensuring that the sliding force of the trigger head 9 can act on the sealing head 10. Changes in the position of the trigger head 9 push the sealing head 10 to move accordingly. When sealing, the sealing head 10 seals the outer end of the sealing hole 81. The gap between the sliding sleeve 8 and the negative pressure pipe 2 is sealed to ensure the sealing effect between the sliding sleeve 8 and the negative pressure pipe 2. In use, to ensure the simplicity of the structure, the sealing head 10 and the trigger head 9 can be omitted, so that the contact seal between the sliding sleeve 8 and the negative pressure pipe 2 is used to ensure the sealing of the air intake 7. In this embodiment, the sealing head 10 is set to ensure the sliding effect between the sliding sleeve 8 and the negative pressure pipe 2, so that the buoyancy can directly drive the sliding sleeve 8 to move. The sliding sleeve 8 can be made of a material with a density less than that of the liquid inside the tank 3, such as plastic, which has a floating effect.

[0025] Specifically, in order to ensure the installation of the thrust spring 11, an installation flange 83 is provided inside the sealing hole 81. One end of the thrust spring 11 abuts against the installation flange 83, and the other end abuts against the bottom of the trigger head 9, thereby effectively ensuring the installation and reset effect of the trigger head 9.

[0026] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A vacuum tank liquid level alarm device, characterized in that, include: The tank has a negative pressure pipe at its top for supplying negative pressure to the inside of the tank. The negative pressure pipe extends from the outside of the tank to the inside of the tank, and the portion of the negative pressure pipe inside the tank has an air intake hole. A floating assembly is slidably connected to the negative pressure pipe inside the tank. The floating assembly floats on top of the liquid inside the tank. When the liquid level inside the tank reaches a predetermined height, the floating assembly blocks the air intake.

2. The vacuum tank level alarm device according to claim 1, characterized in that, The portion of the negative pressure pipe located inside the tank is provided with a lower limit flange and an upper limit flange. The floating component is slidably connected between the upper limit flange and the lower limit flange, and the air intake hole is located at the bottom of the upper limit flange.

3. The vacuum tank level alarm device according to claim 2, characterized in that, The floating component includes: A sliding sleeve is slidably connected to the negative pressure pipe, and the sliding sleeve slides along the distance between the upper limit flange and the lower limit flange; A sealing head disposed inside the sliding sleeve blocks the air intake hole when the sliding sleeve moves to abut the bottom of the upper limit flange.

4. The vacuum tank level alarm device according to claim 3, characterized in that, The sliding sleeve has a sealing hole inside, and the sealing head is slidably connected to the inside of the sealing hole. When the sliding sleeve abuts against the bottom surface of the upper limit flange, the axis of the sealing head coincides with the axis of the air intake hole.

5. The vacuum tank level alarm device according to claim 4, characterized in that, The sealing hole extends to the top surface of the sliding sleeve, and a trigger head is slidably provided on the top of the sealing hole. When the sliding sleeve slides upward to abut against the bottom of the upper limit flange, the trigger head is forced to retract into the interior of the sealing hole.

6. The vacuum tank level alarm device according to claim 5, characterized in that, A thrust spring is provided between the trigger head and the sealing hole, and the trigger head extends out of the sealing hole under the action of the thrust spring.

7. The vacuum tank level alarm device according to claim 6, characterized in that, Hydraulic fluid is provided inside the sealing hole between the sealing head and the trigger head. When the position of the trigger head changes, it pushes the sealing head to move accordingly.

8. The vacuum tank level alarm device according to any one of claims 5 to 7, characterized in that, The sealing head seals the outer end of the sealing hole during sealing, and the gap between the sliding sleeve and the negative pressure pipe is sealed.

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