Sewage liquid level monitoring device for sewage treatment tank

Abstract

The utility model provides a sewage liquid level monitoring device for a sewage treatment tank, which comprises a sewage tank, a liquid level cylinder is fixedly arranged on the side wall of the sewage tank, the liquid level cylinder is communicated with the sewage tank, and an alternate filtering structure and a floating ball liquid level meter are arranged in the liquid level cylinder. By designing an alternate filtering structure, during use, the driving motor is started to rotate the sleeve, so that the filter screen intercepts the communication part of the sewage tank and the liquid level cylinder, the liquid level in the sewage tank is the same as that in the liquid level cylinder, and the floating ball moves up and down along the sensing connecting rod under the action of buoyancy; the liquid level in the sewage tank is monitored by matching with the signal converter, when the filter screen is used for a period of time and needs to be replaced, the driving motor is started again, the position of the filter screen in the liquid level cylinder is adjusted, then the access hole is opened, and the filter screen is replaced and cleaned by pulling out the mounting block from the mounting groove; and the condition that impurities in the sewage tank are adhered to the floating ball to influence the detection precision is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level monitoring devices, in particular to a sewage liquid level monitoring device for a sewage treatment tank. Background Art

[0002] In the process of domestic and sewage treatment, sewage is usually stored in sewage pools. It is necessary to detect the liquid levels in various sewage pools, septic tanks, sewage lift pump stations, rainwater collection pools, and various corrosive water pools, and clean the sewage pool after the liquid level in the sewage pool reaches a certain height. Therefore, it is necessary to use a sewage pool level measuring device to measure the liquid level.

[0003] A Chinese utility model patent with application number CN96247455.X discloses a recycling pool float level gauge, which includes a float level gauge and an oil-water separator. The oil-water separator is composed of a cylinder flange connected to a cylinder body, the lower end of the cylinder body is fixedly connected to a fixed plate, the lower end of the fixed plate is connected to a perforated cylinder body, the perforated cylinder body is wrapped with a stainless steel wire mesh, and the lower end is fixedly connected to a lower blocking plate, and the sensing part of the float level gauge is wrapped in the inner cavity of the cylinder body.

[0004] Regarding the above-mentioned related technologies, the applicant believes that the following defects exist: the wire mesh can reduce the impact of oil pollution on the liquid level meter to a certain extent, but the isolation effect of the wire mesh on floating oil is also limited. After the wire mesh has been used for a period of time, the floating oil will gradually condense on the mesh of the wire mesh and gradually clog the mesh, thereby affecting the detection accuracy of the float level meter.

[0005] Therefore, in response to the above problems, we propose a sewage level monitoring device for sewage treatment tanks. Utility Model Content

[0006] The purpose of the utility model is to provide a sewage level monitoring device for a sewage treatment tank to solve the problems raised by the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewage level monitoring device for a sewage treatment tank, comprising a sewage tank, a liquid level cylinder fixedly installed on the side wall of the sewage tank, the liquid level cylinder being connected to the sewage tank, a rotating filtering structure and a float liquid level gauge being arranged inside the liquid level cylinder, wherein the float liquid gauge comprises a wiring housing fixedly installed on the upper surface of the liquid level cylinder, a signal converter being arranged on the top of the wiring housing, a sensing connecting rod being arranged on the bottom of the wiring housing, and a float being arranged on the sensing connecting rod.

[0008] As a further description of the utility model: the rotating filtering structure includes a sleeve located inside the liquid level cylinder, and the side wall of the sleeve is fixedly mounted with symmetrically distributed connecting blocks, the number of the connecting blocks is four, and a filter screen is arranged at one end of the connecting block away from the sleeve.

[0009] As a further description of the utility model: a mounting block is fixedly installed at one end of the filter screen close to the connecting block, a mounting groove for sliding the mounting block is opened on the side wall of the connecting block, and the cross section of the mounting block is a "cross" shape.

[0010] As a further description of the utility model: a drive shaft is fixedly installed inside the sleeve, the drive shaft is rotatably connected to the liquid level cylinder, a drive motor is fixedly installed at one end of the drive shaft, a fixing ring is fixed on the drive motor, and inspection ports are opened on the upper surface of the liquid level cylinder at the front and rear sides of the drive motor.

[0011] As a further description of the utility model: a liquid outlet pipe and a liquid inlet pipe distributed up and down are fixedly installed on the side wall of the sewage tank away from the liquid level cylinder.

[0012] As a further description of the utility model: a first cover plate is fixedly installed on the top of the sewage tank, a second cover plate is arranged on one side of the first cover plate, and a handle is installed on the upper surface of the second cover plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model designs a rotating filter structure on the sewage level monitoring device for the sewage treatment tank. When in use, the driving motor is started to rotate the sleeve so that the filter screen intercepts the connection between the sewage tank and the liquid level cylinder. At this time, the liquid levels in the sewage tank and the liquid level cylinder are the same. The float moves up and down along the sensing connecting rod under the action of buoyancy, and the liquid level inside the sewage tank is monitored by cooperating with the signal converter. When the filter screen needs to be replaced after a period of use, the driving motor is started again to adjust the position of the filter screen inside the liquid level cylinder, and then the inspection port is opened. The filter screen is replaced and cleaned by pulling the mounting block out of the mounting groove, thereby reducing the situation in which impurities in the sewage tank adhere to the float ball and affect the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the liquid level cylinder of the utility model;

[0017] Figure 3 This is a schematic diagram of the rotation filtering structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of point A of the present utility model.

[0019] In the figure: 1. sewage tank; 2. liquid level cylinder; 3. rotation filter structure; 301. sleeve; 302. connecting block; 303. filter screen; 304. mounting block; 305. mounting groove; 306. drive shaft; 307. drive motor; 308. fixing ring; 4. wiring housing; 5. signal converter; 6. sensing connecting rod; 7. float; 8. liquid outlet pipe; 9. liquid inlet pipe; 10. first cover plate; 11. second cover plate. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-Figure 4 The utility model provides a technical solution: a sewage level monitoring device for a sewage treatment tank, comprising a sewage tank 1, a liquid level cylinder 2 is fixedly installed on the side wall of the sewage tank 1, the liquid level cylinder 2 is connected to the sewage tank 1, a rotating filtering structure 3 and a float liquid level gauge are arranged inside the liquid level cylinder 2, wherein the float liquid gauge comprises a wiring housing 4 fixedly installed on the upper surface of the liquid level cylinder 2, a signal converter 5 is arranged on the top of the wiring housing 4, a sensing connecting rod 6 is arranged at the bottom of the wiring housing 4, and a floating ball 7 is arranged on the sensing connecting rod 6.

[0022] In this embodiment: the rotation filtering structure 3 includes a sleeve 301 located inside the liquid level cylinder 2, and the side wall of the sleeve 301 is fixedly installed with symmetrically distributed connecting blocks 302. The number of connecting blocks 302 is four, and a filter net 303 is provided at one end of the connecting block 302 away from the sleeve 301.

[0023] When used specifically, the filter net 303 can filter the sewage from the sewage tank 1 that enters the liquid level cylinder 2 , thereby reducing the situation where impurities in the sewage tank 1 adhere to the float 7 and affect the detection accuracy.

[0024] In this embodiment, a mounting block 304 is fixedly mounted on one end of the filter screen 303 close to the connecting block 302, and a mounting groove 305 for the mounting block 304 to slide is provided on the side wall of the connecting block 302, and the cross section of the mounting block 304 is a "cross" shape.

[0025] During specific use: the mounting block 304 can be inserted into the mounting groove 305, which facilitates the assembly and disassembly of the filter screen 303 and the connecting block 302, and is convenient for replacement.

[0026] In this embodiment: a drive shaft 306 is fixedly installed inside the sleeve 301, and the drive shaft 306 is rotatably connected to the liquid level cylinder 2. A drive motor 307 is fixedly installed at one end of the drive shaft 306. A fixing ring 308 is fixedly sleeved on the drive motor 307. Inspection ports are opened on the upper surface of the liquid level cylinder 2 at the front and rear sides of the drive motor 307.

[0027] During specific use: a fixing hole is opened inside the fixing ring 308 to install the driving motor 307 on the upper surface of the liquid level cylinder 2. After the driving motor 307 is started, it can drive the sleeve 301 to rotate inside the liquid level cylinder 2 through the driving shaft 306 to adjust the position of different filter screens 303 inside the liquid level cylinder 2.

[0028] In this embodiment, a liquid outlet pipe 8 and a liquid inlet pipe 9 are fixedly installed on the side wall of the sewage tank 1 away from the liquid level cylinder 2 and are distributed vertically.

[0029] During specific use: the liquid outlet pipe 8 and the liquid inlet pipe 9 can realize the inflow and outflow of sewage in the sewage tank 1 .

[0030] In this embodiment: a first cover plate 10 is fixedly installed on the top of the sewage tank 1 , a second cover plate 11 is arranged on one side of the first cover plate 10 , and a handle is installed on the upper surface of the second cover plate 11 .

[0031] During specific use: the handle can facilitate the staff to pick up the second cover plate 11 to facilitate cleaning, maintenance and other operations inside the sewage tank 1.

[0032] Working principle: When in use, start the drive motor 307 to rotate the sleeve 301, so that the filter screen 303 intercepts the connection between the sewage tank 1 and the liquid level cylinder 2. At this time, the sewage in the sewage tank 1 enters the liquid level cylinder 2 through the filter screen 303. Due to the existence of atmospheric pressure, the liquid levels in the sewage tank 1 and the liquid level cylinder 2 are the same. The float 7 moves up and down along the sensing connecting rod 6 under the action of buoyancy, and the liquid level inside the sewage tank 1 is monitored by cooperating with the signal converter 5. When the filter screen 303 needs to be replaced after a period of use, start the drive motor 307 again, adjust the position of the filter screen 303 inside the liquid level cylinder 2, and then open the inspection port. The filter screen 303 is replaced and cleaned by pulling the mounting block 304 out of the mounting groove 305, thereby reducing the situation where impurities in the sewage tank 1 adhere to the float 7 and affect the detection accuracy.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for technical personnel in the field to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sewage level monitoring device for a sewage treatment tank, comprising a sewage tank (1), characterized in that: A liquid level cylinder (2) is fixedly mounted on the side wall of the sewage tank (1), the liquid level cylinder (2) is in communication with the sewage tank (1), a rotating filter structure (3) and a float liquid level gauge are arranged inside the liquid level cylinder (2), wherein the float liquid level gauge comprises a wiring housing (4) fixedly mounted on the upper surface of the liquid level cylinder (2), a signal converter (5) is arranged on the top of the wiring housing (4), a sensing connecting rod (6) is arranged on the bottom of the wiring housing (4), and a floating ball (7) is arranged on the sensing connecting rod (6).

2. The sewage level monitoring device for a sewage treatment tank according to claim 1, characterized in that: The rotating filtering structure (3) comprises a sleeve (301) located inside the liquid level cylinder (2), and the side wall of the sleeve (301) is fixedly mounted with symmetrically distributed connecting blocks (302), the number of the connecting blocks (302) is four, and a filter screen (303) is arranged at one end of the connecting block (302) away from the sleeve (301).

3. The sewage level monitoring device for a sewage treatment tank according to claim 2, characterized in that: A mounting block (304) is fixedly mounted on one end of the filter screen (303) close to the connecting block (302); a mounting groove (305) for the mounting block (304) to slide is provided on a side wall of the connecting block (302); and the mounting block (304) has a cross-shaped cross section.

4. The sewage level monitoring device for a sewage treatment tank according to claim 2, characterized in that: A drive shaft (306) is fixedly installed inside the sleeve (301), and the drive shaft (306) is rotatably connected to the liquid level cylinder (2). A drive motor (307) is fixedly installed at one end of the drive shaft (306), and a fixing ring (308) is fixedly sleeved on the drive motor (307). Inspection ports are opened on the upper surface of the liquid level cylinder (2) at the front and rear sides of the drive motor (307).

5. The sewage level monitoring device for a sewage treatment tank according to claim 1, characterized in that: A liquid outlet pipe (8) and a liquid inlet pipe (9) are fixedly mounted on the side wall of the sewage tank (1) away from the liquid level cylinder (2) and are distributed vertically.

6. The sewage level monitoring device for a sewage treatment tank according to claim 1, characterized in that: A first cover plate (10) is fixedly mounted on the top of the sewage tank (1), a second cover plate (11) is arranged on one side of the first cover plate (10), and a handle is mounted on the upper surface of the second cover plate (11).

Images