CN205246170U - Level gauge for sewage - Google Patents

Abstract

The utility model relates to a liquid level gauge for sewage, which comprises a pipe body with an open end and a cavity. The pipe body is provided with an elastic isolation diaphragm separating the cavity, and positive and negative switches for detecting the liquid level are arranged in the cavity. For the electrodes, the height difference between the positive and negative electrodes is less than or equal to the elastic deformation of the isolation diaphragm. The liquid level gauge for sewage of the utility model divides the cavity into upper and lower parts by setting an isolation diaphragm in the cavity of the pipe body, the cavity above the isolation diaphragm accommodates conductive liquid, and the cavity under the isolation diaphragm The cavity accommodates the sewage, using the principle that the specific gravity of the conductive liquid is lighter than that of the sewage. When the sewage rises, the isolation diaphragm acts upward, and the level of the conductive liquid rises. On the contrary, when the sewage level drops, the isolation diaphragm and the conductive liquid will The liquid level drops under the action, and the liquid level is detected by whether the conductive liquid is connected to the stainless steel electrode. The reliability of liquid level detection is ensured.

Description

A liquid level gauge for sewage

technical field

The utility model relates to a sensor for measuring liquid level, in particular to a liquid level gauge for sewage.

Background technique

The height of the liquid medium in the container is called the liquid level, and the instrument for measuring the liquid level is called a liquid level gauge, and the liquid level gauge is a kind of level instrument. In domestic and industrial production, it is necessary to detect the liquid level in various sewage tanks, septic tanks, sewage lifting pump stations, rainwater collection tanks, various corrosive pools, containers, etc. At present, float type liquid level switches, stainless steel dry reed switch liquid level switches and electrode type liquid level switches are mostly used. Because the sewage contains a lot of sundries and corrosive substances, the traditional float type liquid level Although the reed switch liquid level switch has anti-corrosion effect, it is easy to be entangled and stuck by debris, which affects the use and leads to inaccurate liquid level measurement; and the electrode type liquid level switch uses stainless steel electrodes, but the sewage in the sewage Impurities will adhere to the stainless steel electrodes, and after a long time, the stainless steel electrodes will become non-conductive and fail, making it impossible to detect the liquid level.

Utility model content

In order to solve the above technical problems, the purpose of this utility model is to provide a liquid level gauge for sewage that will not be entangled by sundries and electrodes will not fail.

The liquid level gauge for sewage of the utility model comprises a pipe body with an open end and a cavity. The pipe body is provided with an elastic isolation diaphragm separating the cavity, and a liquid level detection device is provided in the cavity. The positive and negative electrodes, the height difference between the positive and negative electrodes is less than or equal to the elastic deformation of the isolation diaphragm.

Further, the tube body includes a first tube body and a second tube body detachably connected in the axial direction, and the second tube body includes a detachably connected first cavity capable of circumferentially compressing the isolation diaphragm and the second cavity.

Further, the ends connecting the first cavity and the second cavity are provided with connection parts, and the two connection parts are provided with matching waterline grooves in the circumferential direction.

Further, the side wall of the first cavity is provided with a liquid discharge port communicating with the cavity.

Further, the pipe wall of the first pipe body is provided with a liquid level observation port communicated with the cavity, and the liquid level observation port is connected with an overflow buffer chamber communicated with it.

Further, the overflow buffer chamber has a liquid injection port, and an air filter is arranged at the liquid injection port.

Further, the longitudinal stretching range of the isolation diaphragm is 5 mm to 50 mm.

Further, the two connecting parts are respectively ring-shaped flanges folded along the end edges of the first cavity and the second cavity, and are connected by screws.

Further, the pipe wall of the first pipe body is also provided with a threaded portion for installation.

Further, the end of the first pipe body is also provided with a cable interface.

By means of the above scheme, the liquid level gauge for sewage of the utility model divides the cavity into upper and lower parts by setting an isolation diaphragm in the cavity of the pipe body, and the cavity above the isolation diaphragm accommodates the conductive liquid, and isolates The cavity under the diaphragm holds the sewage. Using the principle that the specific gravity of the conductive liquid is lighter than that of the sewage, when the sewage rises, the isolation diaphragm acts upward, and the level of the conductive liquid rises. On the contrary, when the sewage level drops, the isolation diaphragm And the liquid level of the conductive liquid drops under the action of gravity, and the liquid level is detected by whether the conductive liquid is connected to the stainless steel electrode, which is simple and easy to operate, and the liquid level gauge of the utility model will not be entangled or stuck by impurities in the sewage, and the electrode will not It will be corroded by sewage, which ensures the reliability of liquid level detection.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with accompanying drawings. rear.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is a sectional view along line A-A in Fig. 1;

Fig. 3 is a partial enlarged view of B in Fig. 2 .

detailed description

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

Referring to Figures 1 to 3, a liquid level gauge for sewage according to a preferred embodiment of the present invention includes a tube body 10 with one end open and a cavity 20, and the other end of the tube body 10 is provided with a cover 70 , the tube body 10 is provided with an elastic isolation diaphragm 30 separating the cavity 20, and a positive electrode A and a negative electrode B for detecting the liquid level are provided in the cavity 20 close to the cover 70, and between the positive electrode A and the negative electrode B The height difference is less than or equal to the elastic deformation of the isolation diaphragm 30 . For safety reasons, a ground electrode C is also provided in the cavity 20 close to the cover 70 . For the convenience of electrically connecting the positive electrode A, the negative electrode B, and the ground electrode C with external electrical appliances, a cable interface 60 is also provided on the end of the tube body 10, and the positive electrode A, the negative electrode B, and the ground electrode are connected through the cable interface 60. C is electrically connected with external electrical appliances. The utility model uses the isolation diaphragm 30 to divide the cavity 20 into two parts, the cavity 20 from the cover 70 to the isolation diaphragm 30 is used to place the conductive liquid, and the part from the isolation diaphragm 30 to the open end of the cylinder body 10 Part of the cavity 20 is used to accommodate sewage, that is, the isolation diaphragm 30 is used to isolate the conductive liquid from the sewage, and the principle that the specific gravity of the conductive liquid is lighter than the sewage is used. When the sewage rises, the isolation diaphragm 30 is caused to rise, thereby making the conductive liquid The liquid level rises; on the contrary, when the sewage liquid level drops, the liquid level of the isolation diaphragm 30 and the conductive liquid drops under the action of gravity, and then the positive electrode A and negative electrode B of stainless steel are used for detection, that is, when the liquid level of the conductive liquid rises When reaching a certain height, the positive electrode A and the negative electrode B are connected to detect the liquid level of the sewage.

Preferably, the amplitude of longitudinal elastic stretching of the isolation diaphragm 30 in the present invention is 5 mm to 50 mm, that is, in the cavity 20, the maximum amplitude of the liquid level rise of the conductive liquid is 5 mm to 50 mm. Therefore, when injecting the conductive liquid , the height difference between the initial liquid level of the conductive liquid and the liquid level when the conductive liquid conducts the positive electrode A and the negative electrode B is at least 5 mm to 50 mm.

Specifically, the pipe body 10 in the utility model includes a first pipe body 11 and a second pipe body 12 that are axially detachably connected, and the second pipe body 12 includes a detachably connected and circumferentially compressible isolation diaphragm 30 The first cavity 13 and the second cavity 14 . Connecting parts 15 are provided at the ends where the first cavity 13 and the second cavity 14 are connected. Both connecting parts 15 are circumferentially provided with matching waterline grooves 16. The waterline grooves 16 on the two connecting parts 15 are used to Press the isolation diaphragm 30 up and down so that the isolation diaphragm 30 can separate the cavity 20 into upper and lower parts. At the same time, the waterline grooves 16 that cooperate with each other can seal the two connecting parts 15 to prevent the conductive liquid in the cavity 20 from leaking from the two connecting parts 15 .

To facilitate disassembly, the end of the first cavity 13 is connected to the end of the first tube 11 by screwing. Further, the connecting parts 15 on the first cavity 13 and the second cavity 14 are ring-shaped flanging folded along the end edges of the first cavity 13 and the second cavity 14 respectively, and the two are connected by screws. Section 15 is connected. Simple structure, easy to disassemble.

As can be seen from the above, the pipe body 10 of the present utility model is composed of three parts connected, that is, the first pipe body 11, the first cavity body 13 and the second cavity body 14, and the first cavity body 13 is connected with the first pipe body 11 and the second cavity body respectively. Two cavities 14 are detachably connected, because the liquid level gauge of the present utility model can detect the water inlet level of containers or pools of different volumes in actual use, and different containers and pools have corresponding different depths. The liquid level gauge of the utility model is suitable for pools and containers of various depths. The tube body 10 of the utility model is composed of the first tube body 11, the first cavity body 13 and the second cavity body 14, which can be changed by changing the first cavity body The length of body 13 can be changed arbitrarily of the length of the liquid level gauge of the present utility model, thereby can detect the liquid level of arbitrary height. Because the length of the entire liquid level gauge can be changed only by adjusting the length of the first cavity 13 , there is no need to remanufacture the entire pipe body 10 , which saves the use cost.

In order to facilitate the observation of the liquid level of the conductive liquid in the cavity 20, the utility model is provided with a liquid level observation port 18 connected with the cavity 20 on the pipe wall of the first pipe body 11, and the liquid level observation port 18 is transparent , the initial liquid level of the conductive liquid in the cavity 20 can be observed through the liquid level observation port 18 .

The utility model is connected with the overflow buffer cavity 40 connected to the liquid level observation port 18. When the sewage rises, the isolation diaphragm 30 acts upward, and the liquid level of the conductive liquid continues to rise. When the conductive liquid fills the entire cavity 20, It can flow into the overflow buffer cavity 40 . Meanwhile, the overflow buffer chamber 40 has a liquid injection port 41 through which the conductive liquid is injected into the cavity 20 . The overflow buffer chamber 40 is screwed on the liquid level observation port 18, which is convenient for disassembly and replacement.

Further, the utility model is provided with an air filter 42 at the liquid injection port 41, the air filter 42 can absorb the impurities of the air entering the overflow buffer chamber 40, in addition, the air adsorber 42 can make the cavity 20 and the A consistent pressure is maintained outside the tube body 10 to prevent negative pressure in the cavity 20 from affecting the detection of the liquid level.

The length of the tube body 10 is adjusted by replacing the first cavity body 13, and the length of the tube body 10 can be changed arbitrarily by connecting the first cavity body 13 of different lengths. Therefore, when replacing the first cavity body 13, the cavity 20 needs to be replaced. The conductive liquid is discharged, specifically, a liquid discharge port 17 communicating with the cavity 20 can be provided on the side wall of the first cavity 13 .

In order to facilitate the installation of the liquid level gauge of the present utility model on pools, containers, etc. for liquid level detection, the pipe wall of the first pipe body 11 is also provided with a screw joint 50 for installation. Corresponding screw holes are provided on the container, container, etc., and the screw connection part 50 is screwed into the screw hole to realize installation, and the liquid level gauge is also fixed on the pool, container, etc. at the same time.

The liquid level gauge for sewage of the utility model divides the cavity into upper and lower parts by setting an isolation diaphragm in the cavity of the pipe body, the cavity above the isolation diaphragm accommodates conductive liquid, and the cavity under the isolation diaphragm The cavity accommodates the sewage, using the principle that the specific gravity of the conductive liquid is lighter than that of the sewage. When the sewage rises, the isolation diaphragm acts upward, and the level of the conductive liquid rises. On the contrary, when the sewage level drops, the isolation diaphragm and the conductive liquid will The liquid level drops under the action, and the liquid level is detected by whether the conductive liquid is connected to the stainless steel electrode. The reliability of liquid level detection is ensured.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. It should be pointed out that for those of ordinary skill in the art, they can also do Several improvements and modifications are made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims (10)

1. a sewage liquid level gauge, is characterized in that: comprise that one end is uncovered, the have cavity pipe of (20)Body (10), is provided with the elastomeric isolation diaphragm (30) that described cavity (20) is separated in described body (10),In described cavity (20), be provided with the positive and negative electrode that detects liquid level, the difference in height between described positive and negative electrode is littleIn the amount of elastic deformation that equals described isolation diaphragm (30).

2. sewage liquid level gauge according to claim 1, is characterized in that: described body (10) bagDraw together the first body (11) and the second body (12) that axially removably connect, described the second body (12) bagDraw together the first cavity (13) and second chamber that can circumferentially compress described isolation diaphragm (30) that removably connectBody (14).

3. sewage liquid level gauge according to claim 2, is characterized in that: described the first cavity (13)The end being connected with the second cavity (14) is equipped with connecting portion (15), and connecting portion described in two (15) is all upperBe circumferentially with the waterline groove (16) matching.

4. sewage liquid level gauge according to claim 3, is characterized in that: described the first cavity (13)Sidewall be provided with the leakage fluid dram (17) being communicated with described cavity (20).

5. sewage liquid level gauge according to claim 2, is characterized in that: described the first body (11)Tube wall be provided with the liquid level observing mouth (18) being communicated with described cavity (20), described liquid level observing mouth (18)Be connected with the overflow cushion chamber (40) being communicated with it.

6. sewage liquid level gauge according to claim 5, is characterized in that: described overflow cushion chamber (40)Have liquid injection port (41), described liquid injection port (41) locates to be provided with air cleaner (42).

7. sewage liquid level gauge according to claim 2, is characterized in that: described isolation diaphragm (30)The amplitude of longitudinal stretching is 5mm～50mm.

8. sewage liquid level gauge according to claim 3, is characterized in that: connecting portion described in two (15)Be respectively the ring-type flange with the turnover of the second cavity (14) end edge along described the first cavity (13), andBe connected by screw.

9. according to the sewage liquid level gauge described in claim 2-8 any one, it is characterized in that: described firstOn the tube wall of body (11), be also provided with the spiro union portion (50) that use is installed.

10. sewage liquid level gauge according to claim 9, is characterized in that: described the first body (11)End on be also provided with cable interface (60).