Automatic liquid level control structure of receiving tank

Abstract

The utility model relates to the technical field of liquid level control structures, in particular to an automatic liquid level control structure of a receiving tank, which comprises a receiving tank body, a liquid inlet pipe with an electromagnetic valve is arranged on the left side of the receiving tank body, and a liquid outlet pipe with an electromagnetic valve is arranged at the bottom of the right side of the receiving tank body. A first liquid level sensor and a second liquid level sensor are arranged on the front side of the inner wall of the receiving tank body, a first controller is arranged on the front side of the receiving tank body, an overflow pipe is arranged on the right side of the receiving tank body, and the output end of the overflow pipe is connected with an overflow assembly. According to the automatic liquid level control structure of the receiving tank, when the first liquid level sensor detects the liquid level of silicone oil in the receiving tank body, the first controller controls the electromagnetic valve on the liquid inlet pipe to be opened, so that the silicone oil enters the receiving tank body from the liquid inlet pipe, and the silicone oil entering the receiving tank body is filtered by the filtering assembly; and when the second liquid level sensor detects the liquid level of the silicone oil in the receiving tank body, the first controller controls the electromagnetic valve on the liquid inlet pipe to be closed, so that the liquid level of the receiving tank is automatically controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level control structures, in particular to an automatic liquid level control structure of a receiving tank. Background Art

[0002] Silicone oil usually refers to linear polysiloxane products that remain in liquid state at room temperature, which are generally divided into two categories: methyl silicone oil and modified silicone oil. As an important chemical product, the extraction process of silicone oil and the accuracy of equipment operation have a vital impact on the quality of the final product. In the traditional silicone oil extraction process, the liquid level control of the receiving tank mainly relies on manual operation.

[0003] In this mode, the staff needs to regularly check the liquid level of the receiving tank, control the feed according to the actual liquid level, and manually open or close the corresponding valve for liquid level control. This operation mode has the following problems:

[0004] 1. High human resource consumption: Specialized personnel are required to regularly check and adjust the liquid level of the receiving tank, which consumes a lot of human resources.

[0005] 2. Large operational errors: There are certain errors in human judgment and operation, and it is difficult to achieve precise control, which affects the stability and efficiency of the entire extraction process.

[0006] 3. Safety hazards: During the silicone oil extraction process, due to various reasons such as misoperation or negligence, the liquid level in the receiving tank may exceed the standard, thus causing safety problems.

[0007] Therefore, in order to solve the above problems, we propose an automatic liquid level control structure for the receiving tank. Utility Model Content

[0008] The purpose of the utility model is to provide a liquid level automatic control structure for a receiving tank to solve the problems raised in the above background technology.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] The liquid level automatic control structure of the receiving tank comprises a receiving tank body, a liquid inlet pipe with a solenoid valve is provided on the left side and near the top of the receiving tank body, a filter assembly for filtering silicone oil is provided on the left side of the inner wall of the receiving tank body and located at the position of the liquid inlet pipe, which can filter impurities in the silicone oil to prevent impurities from being precipitated in the receiving tank body, a liquid outlet pipe with a solenoid valve is provided at the bottom and near the front end of the right side of the receiving tank body, a first sealing cover is provided on the top of the receiving tank body, a first liquid level sensor is provided on the front side and near the bottom of the inner wall of the receiving tank body, a second liquid level sensor is provided in the middle and upper part of the front side of the inner wall of the receiving tank body, and a first controller is provided on the front side of the receiving tank body;

[0011] The solenoid valve on the liquid inlet pipe, the solenoid valve on the liquid outlet pipe, the first liquid level sensor and the second liquid level sensor are electrically connected to the first controller through wires respectively. When the first liquid level sensor detects the silicone oil liquid level in the receiving tank body, the first liquid level sensor transmits the detected electrical signal to the first controller through the wire. The first controller analyzes and processes the input electrical signal, and then controls the solenoid valve on the liquid inlet pipe to open, so that the silicone oil enters the receiving tank body from the liquid inlet pipe. The silicone oil entering the receiving tank body will be filtered by the filter assembly until the second liquid level sensor detects the silicone oil liquid level in the receiving tank body. The first controller controls the solenoid valve on the liquid inlet pipe to close, thereby realizing automatic control of the liquid level of the receiving tank. When the staff needs to use the silicone oil in the receiving tank body, the staff operates the first controller to control the solenoid valve on the liquid outlet pipe to open;

[0012] An overflow pipe is provided on the right side of the receiving tank body and near the rear end of the top, the output end of the overflow pipe is connected to an overflow assembly, the overflow assembly includes a temporary storage box connected to the overflow pipe, a second sealing cover is provided on the top of the temporary storage box, a third liquid level sensor is provided at the bottom of the rear side of the inner wall of the temporary storage box, and an audible and visual alarm and a second controller are provided on the front side of the temporary storage box;

[0013] The third liquid level sensor and the sound and light alarm are electrically connected to the second controller through wires respectively. When the second liquid level sensor fails unexpectedly or the solenoid valve on the liquid inlet pipe fails unexpectedly, excess silicone oil in the receiving tank can enter the temporary storage box from the overflow pipe. The third liquid level sensor in the temporary storage box detects that silicone oil has entered the temporary storage box. The third liquid level sensor transmits the detected electrical signal to the second controller through the wire. The second controller analyzes and processes the input electrical signal, and then controls the sound and light alarm to turn on, and sends out a sound and light alarm to remind the staff that the liquid level automatic control structure has failed.

[0014] Preferably, an observation window is embedded in the front side of the receiving tank body, the bottom end of the observation window is located below the first liquid level sensor, and the top end of the observation window is located above the second liquid level sensor, so that the staff can check the silicone oil level in the receiving tank body.

[0015] Preferably, the filter assembly includes two fixed vertical plates arranged symmetrically front to back, the left sides of the two fixed vertical plates are fixedly connected to the left side of the inner wall of the receiving tank body, the right sides of the two fixed vertical plates are commonly connected to a fixed box, the liquid inlet pipe is connected to the fixed box, the silicone oil output from the liquid inlet pipe enters the fixed box, and a rectangular opening is opened at the bottom of the fixed box, and the filtered silicone oil is output from the rectangular opening.

[0016] Preferably, a first filter box is placed in the fixed box, the top of the first filter box is located below the liquid inlet pipe, ensuring that the silicone oil output from the liquid inlet pipe enters the first filter box, and a first filter net is provided at the bottom of the first filter box to perform secondary filtration on the silicone oil.

[0017] Preferably, strip support blocks are provided at the lower and middle parts of the left and right sides of the inner wall of the first filter box, and the two strip support blocks jointly support the second filter box to facilitate the taking and placing of the second filter box. The silicone oil output from the liquid inlet pipe first enters the second filter box, and a second filter net is provided at the bottom of the second filter box. The filter holes of the second filter net are larger than the filter holes of the first filter net, and the second filter net plays the role of the first filtration of the silicone oil.

[0018] Preferably, two connecting rods are arranged symmetrically front and back on the top of the first filter box, the top ends of the two connecting rods are commonly connected to a rectangular top plate, the top of the rectangular top plate is provided with a rectangular cover plate, and the top of the rectangular cover plate is provided with a handle to facilitate the staff to move the first filter box.

[0019] Preferably, a rectangular operating opening for the first filter box to pass through is opened on the top of the first sealing cover, so that the first filter box can be taken out upwards, and a frame-shaped sealing rubber sleeve is provided on the outer wall of the rectangular top plate, and the outer wall of the frame-shaped sealing rubber sleeve is tightly fitted with the inner wall of the rectangular operating opening to ensure the sealing of the connection between the rectangular top plate and the rectangular operating opening, and a positioning rotating block is rotatably connected to the top of the first sealing cover and close to the front and rear sides of the rectangular operating opening, and the bottom of the positioning rotating block is abutted against the top of the rectangular cover plate, and the rectangular cover plate is pressed by the two positioning rotating blocks, so that the staff can clean the first filter box and the second filter box conveniently.

[0020] Preferably, a drain pipe with a valve is provided at the bottom of the right side of the temporary storage box, and the silicone oil overflowing into the temporary storage box can be discharged from the drain pipe.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. The liquid level automatic control structure of the receiving tank. When the first liquid level sensor detects the silicone oil liquid level in the receiving tank body, the first liquid level sensor transmits the detected electrical signal to the first controller through a wire. The first controller analyzes and processes the input electrical signal, and then controls the solenoid valve on the liquid inlet pipe to open, so that the silicone oil enters the receiving tank body from the liquid inlet pipe. The silicone oil entering the receiving tank body will be filtered by the filter assembly until the second liquid level sensor detects the silicone oil liquid level in the receiving tank body. The first controller controls the solenoid valve on the liquid inlet pipe to close, thereby realizing automatic liquid level control of the receiving tank. When the staff needs to use the silicone oil in the receiving tank body, the staff operates the first controller to control the solenoid valve on the liquid outlet pipe to open.

[0023] 2. The liquid level automatic control structure of the receiving tank. When the second liquid level sensor fails unexpectedly or the solenoid valve on the liquid inlet pipe fails unexpectedly, the excess silicone oil in the receiving tank can enter the temporary storage box from the overflow pipe. The third liquid level sensor in the temporary storage box detects that silicone oil has entered the temporary storage box. The third liquid level sensor transmits the detected electrical signal to the second controller through a wire. The second controller analyzes and processes the input electrical signal, and then controls the sound and light alarm to turn on, issuing a sound and light alarm to remind the staff that the liquid level automatic control structure has failed.

[0024] 3. The liquid level automatic control structure of the receiving tank has an observation window embedded in the front side of the receiving tank body, the bottom of the observation window is located below the first liquid level sensor, and the top of the observation window is located above the second liquid level sensor, so that the staff can check the silicone oil level in the receiving tank body.

[0025] 4. The liquid level automatic control structure of the receiving tank, the second filter screen of the second filter box plays the role of primary filtration of the silicone oil, and the first filter screen of the first filter box plays the role of secondary filtration of the silicone oil, which can filter out impurities in the silicone oil and prevent impurities from being precipitated in the receiving tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall first-view structure of the utility model;

[0027] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0028] Figure 3 It is one of the partial structural schematic diagrams of the utility model;

[0029] Figure 4 This is the second schematic diagram of the partial structure of the utility model;

[0030] Figure 5 It is a partial structural schematic diagram of the filter assembly in the utility model;

[0031] Figure 6 It is a schematic diagram of the assembly structure of the first filter box and the second filter box in the utility model;

[0032] Figure 7 It is a schematic diagram of the structure of the overflow component in the utility model.

[0033] In the figure: 1, receiving tank body; 10, liquid inlet pipe; 11, liquid outlet pipe; 12, overflow pipe; 13, observation window; 2, first sealing cover; 20, rectangular operating port; 21, positioning rotating block; 3, filter assembly; 30, fixed vertical plate; 31, fixed box; 310, rectangular port; 32, first filter box; 320, first filter net; 321, strip support block; 322, connecting rod; 33, second filter box; 330, second filter net; 34, rectangular top plate; 35, rectangular cover plate; 36, frame-shaped sealing rubber sleeve; 37, handle; 4, first liquid level sensor; 5, second liquid level sensor; 6, first controller; 7, overflow assembly; 70, temporary storage box; 71, second sealing cover; 72, third liquid level sensor; 73, sound and light alarm; 74, second controller; 75, discharge pipe. DETAILED DESCRIPTION

[0034] 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 in 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.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] See also Figure 1-Figure 7 , the utility model provides a technical solution:

[0037] The liquid level automatic control structure of the receiving tank comprises a receiving tank body 1, a liquid inlet pipe 10 with a solenoid valve is arranged on the left side and near the top of the receiving tank body 1, a filter assembly 3 for filtering silicone oil is arranged on the left side of the inner wall of the receiving tank body 1 and located at the position of the liquid inlet pipe 10, which can filter impurities in the silicone oil to prevent impurities from being precipitated in the receiving tank body 1, a liquid outlet pipe 11 with a solenoid valve is arranged at the bottom and near the front end of the right side of the receiving tank body 1, a first sealing cover 2 is arranged on the top of the receiving tank body 1, a first liquid level sensor 4 is arranged on the front side and near the bottom of the inner wall of the receiving tank body 1, a second liquid level sensor 5 is arranged in the middle and upper part of the front side of the inner wall of the receiving tank body 1, and a first controller 6 is arranged on the front side of the receiving tank body 1;

[0038] The solenoid valve on the liquid inlet pipe 10, the solenoid valve on the liquid outlet pipe 11, the first liquid level sensor 4 and the second liquid level sensor 5 are electrically connected to the first controller 6 through wires respectively. When the first liquid level sensor 4 detects the silicone oil liquid level in the receiving tank body 1, the first liquid level sensor 4 transmits the detected electrical signal to the first controller 6 through the wire. The first controller 6 analyzes and processes the input electrical signal, and then controls the solenoid valve on the liquid inlet pipe 10 to open, so that the silicone oil enters the receiving tank body 1 from the liquid inlet pipe 10. The silicone oil entering the receiving tank body 1 will be filtered by the filter component 3 until the second liquid level sensor 5 detects the silicone oil liquid level in the receiving tank body 1. The first controller 6 controls the solenoid valve on the liquid inlet pipe 10 to close, thereby realizing automatic control of the liquid level of the receiving tank. When the staff needs to use the silicone oil in the receiving tank body 1, the staff operates the first controller 6 to control the solenoid valve on the liquid outlet pipe 11 to open;

[0039] An overflow pipe 12 is provided on the right side of the receiving tank body 1 and near the top rear end, and the output end of the overflow pipe 12 is connected to the overflow assembly 7, and the overflow assembly 7 includes a temporary storage box 70 connected to the overflow pipe 12, a second sealing cover 71 is provided on the top of the temporary storage box 70, a third liquid level sensor 72 is provided at the bottom of the rear side of the inner wall of the temporary storage box 70, and an audible and visual alarm 73 and a second controller 74 are provided on the front side of the temporary storage box 70;

[0040] The third liquid level sensor 72 and the sound and light alarm 73 are electrically connected to the second controller 74 through wires respectively. When the second liquid level sensor 5 fails unexpectedly or the solenoid valve on the liquid inlet pipe 10 fails unexpectedly, the excess silicone oil in the receiving tank 1 can enter the temporary storage box 70 from the overflow pipe 12. The third liquid level sensor 72 in the temporary storage box 70 detects that silicone oil has entered the temporary storage box 70. The third liquid level sensor 72 transmits the detected electrical signal to the second controller 74 through the wire. The second controller 74 analyzes and processes the input electrical signal, and then controls the sound and light alarm 73 to turn on, and sends out a sound and light alarm to remind the staff that the liquid level automatic control structure has failed.

[0041] In this embodiment, an observation window 13 is embedded in the front side of the receiving tank body 1, the bottom end of the observation window 13 is located below the first liquid level sensor 4, and the top end of the observation window 13 is located above the second liquid level sensor 5, which is convenient for the staff to check the silicone oil level in the receiving tank body 1.

[0042] Furthermore, the filter assembly 3 includes two fixed vertical plates 30 that are symmetrically arranged front to back, the left sides of the two fixed vertical plates 30 are fixedly connected to the left side of the inner wall of the receiving tank body 1, and the right sides of the two fixed vertical plates 30 are commonly connected to a fixed box 31, the liquid inlet pipe 10 is connected to the fixed box 31, the silicone oil output from the liquid inlet pipe 10 enters the fixed box 31, and a rectangular opening 310 is opened at the bottom of the fixed box 31, and the filtered silicone oil is output from the rectangular opening 310.

[0043] Furthermore, a first filter box 32 is placed in the fixed box 31, and the top of the first filter box 32 is located below the liquid inlet pipe 10 to ensure that the silicone oil output from the liquid inlet pipe 10 enters the first filter box 32. A first filter net 320 is provided at the bottom of the first filter box 32 to perform secondary filtration on the silicone oil.

[0044] Furthermore, strip support blocks 321 are provided at the lower and middle parts of the left and right sides of the inner wall of the first filter box 32. The two strip support blocks 321 jointly support the second filter box 33, which is convenient for taking and placing the second filter box 33. The silicone oil output from the liquid inlet pipe 10 first enters the second filter box 33. A second filter net 330 is provided at the bottom of the second filter box 33. The filter holes of the second filter net 330 are larger than the filter holes of the first filter net 320. The second filter net 330 plays the role of the first filtration of the silicone oil.

[0045] Furthermore, two connecting rods 322 are symmetrically arranged front to back on the top of the first filter box 32, and the top ends of the two connecting rods 322 are commonly connected to a rectangular top plate 34, and a rectangular cover plate 35 is provided on the top of the rectangular top plate 34, and a handle 37 is provided on the top of the rectangular cover plate 35 to facilitate the staff to move the first filter box 32.

[0046] Furthermore, a rectangular operating port 20 is provided at the top of the first sealing cover 2 for the first filter box 32 to pass through, so that the first filter box 32 can be taken out upwards, and a frame-shaped sealing rubber sleeve 36 is provided on the outer wall of the rectangular top plate 34. The outer wall of the frame-shaped sealing rubber sleeve 36 fits tightly with the inner wall of the rectangular operating port 20 to ensure the sealing of the connection between the rectangular top plate 34 and the rectangular operating port 20. The top of the first sealing cover 2 and the positions close to the front and rear sides of the rectangular operating port 20 are rotatably connected with positioning blocks 21. The bottom of the positioning block 21 is abutted against the top of the rectangular cover plate 35. The rectangular cover plate 35 is pressed by the two positioning blocks 21, which is convenient for the staff to clean the first filter box 32 and the second filter box 33.

[0047] Furthermore, a drain pipe 75 with a valve is provided at the bottom of the right side of the temporary storage box 70 , and the silicone oil overflowing into the temporary storage box 70 can be discharged from the drain pipe 75 .

[0048] When the liquid level automatic control structure of the receiving tank of this embodiment is in use, when the first liquid level sensor 4 detects the silicone oil liquid level in the receiving tank body 1, the first liquid level sensor 4 transmits the detected electrical signal to the first controller 6 through the wire, and the first controller 6 analyzes and processes the input electrical signal, and then controls the solenoid valve on the liquid inlet pipe 10 to open, so that the silicone oil enters the receiving tank body 1 from the liquid inlet pipe 10. The silicone oil entering the receiving tank body 1 will be filtered by the filter assembly 3, and the second filter net 330 of the second filter box 33 plays the role of primary filtration of the silicone oil, and the first filter net 320 of the first filter box 32 plays the role of secondary filtration of the silicone oil. The filtered silicone oil is output from the rectangular opening 310 until the second liquid level sensor 5 detects the silicone oil liquid level in the receiving tank body 1. The first controller 6 6 controls the electromagnetic valve on the liquid inlet pipe 10 to close, so as to realize automatic control of the liquid level of the receiving tank. When the staff needs to use the silicone oil in the receiving tank body 1, the staff operates the first controller 6 to control the electromagnetic valve on the liquid outlet pipe 11 to open; when the second liquid level sensor 5 fails unexpectedly or the electromagnetic valve on the liquid inlet pipe 10 fails unexpectedly, the excess silicone oil in the receiving tank body 1 can enter the temporary storage box 70 from the overflow pipe 12, and the third liquid level sensor 72 in the temporary storage box 70 detects that silicone oil has entered the temporary storage box 70. The third liquid level sensor 72 transmits the detected electrical signal to the second controller 74 through a wire. The second controller 74 analyzes and processes the input electrical signal, and then controls the sound and light alarm 73 to open, and sends out a sound and light alarm to remind the staff that the automatic liquid level control structure has failed.

[0049] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A liquid level automatic control structure for a receiving tank, comprising a receiving tank body (1), characterized in that: A liquid inlet pipe (10) with a solenoid valve is provided on the left side and near the top of the receiving tank body (1); a filter assembly (3) for filtering silicone oil is provided on the left side of the inner wall of the receiving tank body (1) and located at the position of the liquid inlet pipe (10); a liquid outlet pipe (11) with a solenoid valve is provided at the bottom and near the front end of the right side of the receiving tank body (1); a first sealing cover (2) is provided on the top of the receiving tank body (1); a first liquid level sensor (4) is provided on the front side and near the bottom of the inner wall of the receiving tank body (1); and a second liquid level sensor is provided in the middle and upper part of the front side of the inner wall of the receiving tank body (1). (5), a first controller (6) is provided on the front side of the receiving tank body (1), an overflow pipe (12) is provided on the right side of the receiving tank body (1) and near the top rear end, the output end of the overflow pipe (12) is connected to an overflow assembly (7), the overflow assembly (7) comprises a temporary storage box (70) connected to the overflow pipe (12), a second sealing cover (71) is provided on the top of the temporary storage box (70), a third liquid level sensor (72) is provided on the bottom of the rear side of the inner wall of the temporary storage box (70), and an audible and visual alarm (73) and a second controller (74) are provided on the front side of the temporary storage box (70).

2. The liquid level automatic control structure of the receiving tank according to claim 1 is characterized in that: An observation window (13) is embedded in the front side of the receiving tank body (1), the bottom end of the observation window (13) is located below the first liquid level sensor (4), and the top end of the observation window (13) is located above the second liquid level sensor (5).

3. The liquid level automatic control structure of the receiving tank according to claim 1 is characterized in that: The solenoid valve on the liquid inlet pipe (10), the solenoid valve on the liquid outlet pipe (11), the first liquid level sensor (4) and the second liquid level sensor (5) are electrically connected to the first controller (6) via wires respectively.

4. The liquid level automatic control structure of the receiving tank according to claim 1 is characterized in that: The filter assembly (3) comprises two fixed vertical plates (30) arranged symmetrically in front and back, the left sides of the two fixed vertical plates (30) are fixedly connected to the left side of the inner wall of the receiving tank body (1), the right sides of the two fixed vertical plates (30) are commonly connected to a fixed box (31), the liquid inlet pipe (10) is connected to the fixed box (31), and the bottom of the fixed box (31) is provided with a rectangular opening (310).

5. The liquid level automatic control structure of the receiving tank according to claim 4 is characterized in that: A first filter box (32) is placed in the fixing box (31); the top of the first filter box (32) is located below the liquid inlet pipe (10); and a first filter net (320) is provided at the bottom of the first filter box (32).

6. The liquid level automatic control structure of the receiving tank according to claim 5, characterized in that: Strip-shaped support blocks (321) are provided at the middle and lower parts of the left and right sides of the inner wall of the first filter box (32), and the two strip-shaped support blocks (321) jointly support a second filter box (33). A second filter screen (330) is provided at the bottom of the second filter box (33), and the filter holes of the second filter screen (330) are larger than the filter holes of the first filter screen (320).

7. The liquid level automatic control structure of the receiving tank according to claim 5, characterized in that: The top of the first filter box (32) is provided with two connecting rods (322) arranged symmetrically in front and back, the top ends of the two connecting rods (322) are commonly connected to a rectangular top plate (34), the top of the rectangular top plate (34) is provided with a rectangular cover plate (35), and the top of the rectangular cover plate (35) is provided with a handle (37).

8. The liquid level automatic control structure of the receiving tank according to claim 7, characterized in that: A rectangular operating opening (20) is provided at the top of the first sealing cover (2) for the first filter box (32) to pass through; a frame-shaped sealing rubber sleeve (36) is provided on the outer wall of the rectangular top plate (34); the outer wall of the frame-shaped sealing rubber sleeve (36) is tightly fitted with the inner wall of the rectangular operating opening (20); a positioning rotating block (21) is rotatably connected to the top of the first sealing cover (2) and close to the front and rear sides of the rectangular operating opening (20); the bottom of the positioning rotating block (21) abuts against the top of the rectangular cover plate (35).

9. The liquid level automatic control structure of the receiving tank according to claim 1, characterized in that: The third liquid level sensor (72) and the sound and light alarm (73) are electrically connected to the second controller (74) via wires, respectively.

10. The liquid level automatic control structure of the receiving tank according to claim 1, characterized in that: A liquid discharge pipe (75) with a valve is provided at the bottom of the right side of the temporary storage box (70).

Images