Automatic drainage device
By designing automatic drainage devices, automatic drainage control is achieved using float level controllers and ultrasonic level meters, the safety hazards and high operating costs caused by sewage accumulation in low terrain such as underground pump rooms are solved, and automated drainage is achieved, reducing risks and costs.
Patent Information
- Application Number
- CN202422261348.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-14
AI Technical Summary
In underground pump rooms and other places with lower terrain, sewage accumulation leads to the need to manually start the sewage pump for drainage, which poses safety hazards and high operating costs.
Design an automatic drainage device, including a drainage system, an automatic liquid level control circuit and a water level monitoring device, and use a float level controller and an ultrasonic liquid level meter to achieve automatic drainage control to avoid manual operation.
It realizes automatic drainage when the water level required for drainage is met without manual operation, reducing the risk of accidents and equipment damage, reducing operating costs and labor waste, and improving safety and stability.
Smart Images
Figure CN222990763U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of drainage, and particularly relates to a drainage device for treating accumulated sewage in underground pump rooms or places with relatively low terrain such as construction sites. Background Art
[0002] In underground pump rooms and other places with relatively low terrain that require water use, the accumulation of sewage is inevitable. Most of the time, sewage pumps are needed to provide pressure to transport sewage from low places to high places. In the case of accumulated sewage, if the sewage pump is not started in time to drain the sewage, it will have a great impact on normal work. Especially in the rainy season, the backflow of rainwater through pipelines will lead to an increase in the drainage time and frequency, increasing the operation and management costs and wasting manpower, and even possibly causing safety accidents. Content of the Utility Model
[0003] In view of the above situation, in order to solve the problems existing in the above technology, the utility model provides a drainage device that can monitor the water level and avoid manual operation. The device requires no manual operation, is durable, and has strong applicability.
[0004] An automatic drainage device includes a drainage system, a liquid level automatic control circuit, and a water level monitoring device. The drainage system is composed of a submersible pump and a drainage pipeline system connected to the submersible pump. The drainage pipeline system is provided with a galvanized steel pipe, and a check valve and a maintenance valve are also provided on the galvanized steel pipe. The liquid level automatic control circuit is provided with a control circuit box and a float liquid level switch. One end of the float liquid level switch is installed on the pool wall through a hinge. A circuit breaker, a fuse, and a relay are provided in the control circuit box. An AC contactor is provided in the float liquid level switch. The control circuit box is connected to the AC contactor and the submersible pump through cables respectively. The water level monitoring device is an ultrasonic liquid level gauge arranged above the reservoir where the submersible pump is located.
[0005] According to an automatic drainage device of the present application, the float liquid level switch is internally provided with a first cavity and a second cavity that are interconnected. The AC contactor is installed in the first cavity, and the contact switch of the AC contactor is arranged at the connection between the first cavity and the second cavity. A steel ball that can move along the second cavity is provided in the second cavity.
[0006] According to an automatic drainage device of the present application, one end of the float liquid level switch where the AC contactor is provided is installed on the pool wall through a hinge.
[0007] According to an automatic drainage device of the present application, the contact switch of the AC contactor includes a push switch and a push rod. One end of the push rod is rotatably installed at the bottom of the first cavity through a hinge structure, and the other end of the push rod is arranged between the push switch and the steel ball.
[0008] After adopting the technology proposed by the present utility model, the automatic drainage device according to the embodiments of the present utility model has the following beneficial effects.
[0009] 1) Through the cooperation of the float level controller and the drainage system, the drainage system can automatically drain water when the water level reaches the drainage requirement, without manual operation and without affecting manual operation. Through water level monitoring, the accumulation of water volume and the operation of the float level controller can be accurately understood, realizing automatic drainage control.
[0010] 2) Through the above automatic operations, accidents and equipment damage caused by non-standard and untimely manual operations are significantly reduced, effectively reducing the operating cost and waste of labor, and improving the safety and stability of operation and production. The drainage device that can avoid manual operation by monitoring the water level can be used for the construction and renovation of underground pump rooms or low-lying areas such as construction sites. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic cross-sectional structure diagram of the automatic drainage device system of the present utility model.
[0012] Figure 2 It is a schematic cross-sectional structure diagram of the float switch of the automatic drainage device of the present utility model.
[0013] Figure 3 It is a control system diagram of the automatic drainage device of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] The following will describe various preferred embodiments of the present utility model with reference to the accompanying drawings. The following description with reference to the accompanying drawings is provided to assist in understanding the exemplary embodiments of the present utility model defined by the claims and their equivalents. It includes various specific details for assistance in understanding, but they are only to be regarded as exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present utility model. Moreover, to make the description of the specification more clear and concise, the detailed description of well-known functions and configurations will be omitted.
[0015] As Figures 1-3As shown in the figure, an automatic drainage device includes a drainage system, a liquid level automatic control circuit and a water level monitoring device. The drainage system consists of a submersible pump 1 and a drainage pipeline system connected to the submersible pump 1. The drainage pipeline system is provided with a galvanized steel pipe 2, and a check valve 4 and a maintenance valve 3 are also provided on the galvanized steel pipe 2. The liquid level automatic control circuit is provided with a control circuit box 5 and a float level switch 11. One end of the float level switch 11 is installed on the pool wall through a hinge. The control circuit box 5 is provided with a circuit breaker 7, a fuse 8 and a relay 10. An AC contactor 9 is provided in the float level switch 11. The control circuit box 5 is connected to the AC contactor 9 and the submersible pump 1 respectively through a cable 6. The water level monitoring device is an ultrasonic level gauge 12 arranged above the reservoir 13 where the submersible pump 1 is located.
[0016] The float level switch 11 is provided with a first cavity 111 and a second cavity 112 which are communicated with each other. The AC contactor 9 is installed in the first cavity 111. The contact switch of the AC contactor 9 is arranged at the communication place of the first cavity 111 and the second cavity 112. A steel ball 110 which can move along the second cavity 112 is arranged in the second cavity 112.
[0017] One end of the float level switch 11 where the AC contactor 9 is provided is installed on the pool wall through a hinge.
[0018] The contact switch of the AC contactor 9 includes a push button switch 91 and a push rod 92. One end of the push rod 92 is rotatably installed at the bottom of the first cavity 111 through a hinge structure. The other end of the push rod 92 is arranged between the push button switch 91 and the steel ball 110.
[0019] For the automatic drainage device according to the present application, the operating principle is as follows: When the power is turned on, the float level controller 11 controls the drainage water level. When the liquid level rises to the designed drainage level, the steel ball in the float level controller 11 presses the switch of the AC contactor 9 to be closed under the influence of gravity. Then, an electrical signal is transmitted to cause the normally open point of the relay 10 to be closed, and the submersible pump 1 is powered on and started. The sewage in the reservoir 13 is introduced into the pump body and finally discharged through the drain pipe 2. When the water level drops to the pump shutdown level, the contactor in the float level controller 11 is disconnected, the entire control circuit is powered off, and the water pump is powered off and stops pumping.
[0020] For the automatic drainage device according to the present application, the submersible pump 1 is a conventional submersible sewage pump, mainly made of cast iron structure, and its type is determined according to the actual drainage volume and drainage time. The drainage pipeline system mainly consists of a galvanized steel pipe 2, a check valve 4 and a maintenance valve 3.
[0021] The contact switch of the AC contactor 9 includes a push-button switch 91 and a push rod 92. One end of the push rod 92 is rotatably installed at the bottom of the first cavity 111 through a hinge structure, and the other end of the push rod 92 is arranged between the push-button switch 91 and the steel ball 110. When the water level in the reservoir 13 is low, the float level switch 11 hangs down naturally, and the steel ball 110 moves away from the AC contactor 9 due to gravity; when the liquid level rises to the designed drainage level, the float level switch 11 is lifted by the liquid surface. When the buoyancy can overcome the gravity and cause it to tilt, the steel ball 110 moves towards the end close to the AC contactor 9 due to gravity, pushing the push rod 92 and causing the push rod 92 to press the push-button switch 91, thereby making the switch of the AC contactor 9 close.
[0022] The measuring principle of the water level monitoring device is based on the ultrasonic principle. By calculating the time for the ultrasonic wave to return to the probe, the height of the sewage is measured. The measuring range is 0.3 - 3m, the resolution is 0.03m, and the accuracy is ±0.1m; it can be installed in a submerged manner or fixedly. Through the water level monitoring device, the water level information can be understood in real time, and at the same time, it can be judged whether the float level controller is operating normally and whether there is any damage.
[0023] The submersible pump 1 mentioned is a 5kw submersible pump, mainly made of cast iron and equipped with a self-coupling device.
[0024] The drain pipe 2 mentioned is a DN75 seamless steel pipe.
[0025] The maintenance valve 3 mentioned is a Z45T DN75 PN = 1.0MPa manual hard-sealed gate valve.
[0026] The check valve 4 mentioned is a DN75 PN = 1.0MPa ordinary check valve.
[0027] The control circuit box 5 mentioned is made of 304 stainless steel and is a standard-form circuit control box with an internal structure.
[0028] The cable 6 mentioned is a four-core cable suitable for 380V alternating current.
[0029] The circuit breaker 7 mentioned is a 380V air switch.
[0030] The fuse 8 mentioned is a 32A fuse.
[0031] The AC contactor 9 mentioned is a 220V AC contactor.
[0032] The relay 10 mentioned is a 220V intermediate relay.
[0033] The reservoir 13 mentioned is a concrete or steel structure pool for storing accumulated water in low-lying places such as underground pump rooms or construction sites.
[0034] The automatic drainage device according to the present application is easy to install, highly efficient, requires no manual operation, has strong applicability and durability, and is an effective method to solve the serious water accumulation in low-lying areas, where only manual start of sewage pumps can be relied on for drainage; it is particularly suitable for occasions where it is difficult to have long-term dedicated personnel on duty and the drainage interval time requirement is less.
[0035] The automatic drainage device according to the present application, through the cooperation of the float level controller and the drainage system, enables the drainage system to automatically drain water when the water level reaches the drainage requirement, without manual operation and without affecting manual operation. Through water level monitoring, the accumulation of water volume and the operation of the float level controller can be accurately understood, realizing automatic drainage control. Through the above automatic operations, accidents and equipment damage that may be caused by non-standard and untimely manual operations are significantly reduced, effectively reducing the operation cost and waste of labor, and improving the safety and stability of operation and production. This drainage device that can avoid manual operation by monitoring the water level can be used for the construction and renovation of low-lying areas such as underground pump rooms or construction sites.
[0036] The above has introduced the present utility model in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.
[0037] Through the description of the above embodiments, those skilled in the art can clearly understand that the present utility model is feasible. Of course, the above-listed situations are only examples, and the present utility model is not limited thereto. Those skilled in the art should understand that according to other deformations or simplifications of the technical solution of the present utility model, they can all be appropriately applied to the present utility model and should be included within the scope of the present utility model.
Claims
1. An automatic drainage device, characterized in that: The invention comprises a drainage system, an automatic liquid level control circuit and a water level monitoring device. The drainage system comprises a submersible pump (1) and a drainage pipeline system connected to the submersible pump (1). The drainage pipeline system is provided with a galvanized steel pipe (2). The galvanized steel pipe (2) is also provided with a check valve (4) and a check valve (3). The automatic liquid level control circuit is provided with a control circuit box (5) and a float liquid level switch (11). One end of the float liquid level switch (11) is mounted on the pool wall through a hinge. The control circuit box (5) is provided with a circuit breaker (7), a fuse (8) and a relay (10). The float liquid level switch (11) is provided with an AC contactor (9). The control circuit box (5) is connected to the AC contactor (9) and the submersible pump (1) respectively through a cable (6). The water level monitoring device is an ultrasonic level meter (12) arranged above the water reservoir (13) where the submersible pump (1) is located.
2. The automatic drainage device according to claim 1, characterized in that: The float liquid level switch (11) is provided with a first cavity (111) and a second cavity (112) which are connected to each other. The AC contactor (9) is installed in the first cavity (111). The contact switch of the AC contactor (9) is arranged at the connection point between the first cavity (111) and the second cavity (112). The second cavity (112) is provided with a steel ball (110) which can move along the second cavity (112).
3. The automatic drainage device according to claim 2, characterized in that: One end of the float liquid level switch (11) where the AC contactor (9) is provided is mounted on the pool wall through a hinge.
4. The automatic drainage device according to claim 2, characterized in that: The contact switch of the AC contactor (9) comprises a push switch (91) and a push rod (92), one end of the push rod (92) is relatively rotatably mounted on the bottom of the first cavity (111) via a hinge structure, and the other end of the push rod (92) is arranged between the push switch (91) and the steel ball (110).