CN215931024U - Liquid level detection device and feces closed pumping system - Google Patents
Liquid level detection device and feces closed pumping system Download PDFInfo
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- CN215931024U CN215931024U CN202120454035.8U CN202120454035U CN215931024U CN 215931024 U CN215931024 U CN 215931024U CN 202120454035 U CN202120454035 U CN 202120454035U CN 215931024 U CN215931024 U CN 215931024U
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Abstract
The utility model provides a feces closed pumping system and a liquid level detection device thereof, during the closed pumping feces conveying process, the liquid level in a first pipeline can rise once to submerge a common end probe, a low liquid level probe and a high liquid level probe, at the moment, electrode bars of the three probes are in short circuit connection, a starting signal is output, a pumping device works, the liquid level in a pool drops, the high liquid level probe leaves the liquid level, at the moment, the interior of a liquid level relay is self-locked, the output signal is not interrupted, until the low liquid level probe leaves the liquid level, at the moment, the signal output is interrupted, the pumping device stops working, and therefore, the function that the device automatically starts and stops working according to the liquid level height is achieved. The liquid level detection device can improve the accuracy of liquid level detection in the pipe and reduce the investment cost simultaneously.
Description
Technical Field
The utility model belongs to the technical field of environmental protection equipment, and particularly relates to a liquid level detection device and a feces closed pumping system.
Background
With the continuous promotion of livestock breeding technology and large-scale degree, the livestock industry basically ensures the supply of meat, eggs and milk in urban and rural areas, but a series of problems emerge simultaneously, wherein the most prominent treatment and resource utilization of feces become a great problem which puzzles the development of the livestock breeding industry, and the problem is also an actual problem which is urgently needed to be solved at present. Meanwhile, in the process of closed pumping and conveying the excrement, because the excrement is conveyed in a fully closed manner, the height of the liquid level in the 315mm vertical pipe cannot be observed, at least 2 persons are required to communicate, cooperate with starting and stopping of mechanical equipment to convey the excrement in the whole process, and the manpower is consumed to a certain extent.
At present, domestic liquid level meters are divided into two types of contact type (directly contacting with a measured liquid) and non-contact type (not contacting with the measured liquid), each type comprises a plurality of types, and common floating ball liquid level meters, ultrasonic liquid level meters and the like are suitable for liquid level detection in a pool with a wide liquid level and are not suitable for 315mm vertical pipes (the liquid level area is only 0.07 m)3) And (4) detecting the liquid level in the tank.
Therefore, how to improve the accuracy of liquid level detection in the pipe and reduce the investment cost is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a liquid level detection device and a feces closed pumping system, which can improve the accuracy of liquid level detection in a pipe and reduce the investment cost.
In order to solve the above technical problem, the present invention provides a liquid level detection apparatus for detecting a liquid level of a first pipe connected to a drain pipe of each unit, including:
the base is used for connecting the upper end of the first pipeline;
the probe assembly is arranged on the base and comprises a low liquid level probe and a common end probe which are respectively used for detecting the low liquid level and the lowest reference liquid level of the first pipeline;
and the controller is used for receiving the liquid level signal of the probe assembly to control the starting and stopping of the pumping device.
Optionally, the controller is at least configured to send a start signal to the pumping device when the liquid level is above the low level probe and to send a stop signal to the pumping device when the liquid level is below the low level probe.
Optionally, the probe assembly further comprises high liquid level probes for detecting the high liquid level of the first pipeline respectively.
Optionally, the controller is further configured to send a start signal to the pumping device when the liquid level is higher than the high liquid level probe, and send a self-locking signal to the liquid level relay when the liquid level is higher than the low liquid level probe and lower than the high liquid level probe.
Optionally, the base is provided with a waterproof wiring hole for connecting the probe assembly and a wiring terminal for connecting the probe assembly and the controller.
Optionally, a wiring screw cap for mounting the wiring terminal is arranged on the base.
Optionally, the probe assembly is sleeved with a hose for preventing water and dirt.
The utility model also provides a closed pumping system for feces, which comprises:
a blowdown port pipe of each unit;
the first pipeline is connected with the sewage discharge port pipes of all the units, and the upper end of the first pipeline is provided with a liquid level detection device and the lower end of the first pipeline is provided with a pipeline plug;
wherein the liquid level detection device is the liquid level detection device as described above.
Optionally, the liquid level detection device further comprises a pumping device connected with the lower end of the first pipeline, and the pumping device is electrically connected with a controller of the liquid level detection device to control the starting and stopping of the pumping device through a liquid level signal.
Optionally, the pumping device is a water pump.
The liquid level detection device provided by the utility model has the beneficial effects that:
in airtight pump sending excrement and sewage transportation process, the liquid level in the first pipeline can rise once and submerge common port probe and low liquid level probe, the electrode bar short circuit of probe subassembly this moment, output start signal, pumping installations work, the liquid level descends in the pond, leave the liquid level until low liquid level probe, signal output interrupts this moment, pumping installations stop work, thereby reach equipment and highly realize opening the function from opening according to the liquid level, this liquid level detection device can improve intraductal liquid level detection's accuracy, reduce the input cost simultaneously.
The closed pumping system for the excrement provided by the utility model is provided with the liquid level detection device, so that the closed pumping system for the excrement also has the beneficial effects, and the detailed description is omitted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a closed pumping system for fecal sewage according to an embodiment of the present invention;
FIG. 2 is a front view of a liquid level detecting device according to an embodiment of the present invention;
FIG. 3 is a top view of a liquid level detecting device according to an embodiment of the present invention;
fig. 4 is a control flow chart of a closed fecal sewage pumping system according to an embodiment of the present invention.
The reference numerals in the above figures include:
a first duct S1; a liquid level detection device 1; a base 110; a waterproof wiring hole 111; a terminal post 112; a wiring screw cap 113; a probe assembly 120; a low level probe 121; a common terminal probe 122; a high level probe 123; a hose 124; a pipeline plug 2; each unit blowdown port pipe S2; a pumping device S3.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is more than two, if there are first and second described for the purpose of distinguishing technical features, but not for indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The core of the utility model is to provide a liquid level detection device and a feces closed pumping system, which can improve the accuracy of liquid level detection in a pipe and reduce the investment cost at the same time.
In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of a closed pumping system for fecal sewage according to an embodiment of the present invention; specifically, referring to fig. 1 in conjunction with fig. 2-4, the closed fecal sewage pumping system includes: each unit sewage discharge port pipe S2, a first pipeline S1 and a pumping device, wherein the pumping device in the system is directly connected to the unit sewage discharge port through a pipeline, and the pipeline is closed in the whole process of conveying the liquid dung.
First pipeline S1 is vertical to be set up, be connected with each unit blowdown oral siphon S2, first pipeline S1 'S upper end sets up liquid level detection device 110 and the lower extreme sets up pipeline end cap 120 in order to realize sealing, first pipeline S1' S lower extreme is connected with pumping installations S3, pumping installations S3 is connected through the controller electricity with liquid level detection device 110, and then realize opening through liquid level signal control pumping installations S3 and stop, effectively avoid all time period work, and need artifical detection control, the use of manpower is saved.
Wherein the pumping device S3 is a water pump.
In particular, in this embodiment, the liquid level detecting device 110 of the closed pumping system for fecal sewage is used for detecting the liquid level of the first pipeline S1 connected to each unit sewage outlet pipe S2.
It should be understood that the core of the present invention lies in the above-mentioned liquid level detection device 110, and therefore, the embodiments of the present invention will be mainly described in detail with respect to the liquid level detection device 110. For other structures in the closed pumping system for fecal sewage provided by this embodiment, reference can be made to the related prior art, and detailed description thereof will not be provided here.
Specifically, referring to fig. 2-3, the liquid level detecting device 110 may include: a base 111, a probe assembly 120, and a controller.
Wherein, the base 110 is used for connecting the upper end of the first pipeline S1. The base 110 is provided with a probe assembly 120 including a low level probe 121 for detecting a lowest liquid level of the first pipe S1, a common end probe 122 for detecting a reference liquid level of the first pipe S1, and a high level probe 123 for detecting a highest liquid level of the first pipe S1, respectively. The probes are sequentially divided into a common end probe 122, a low liquid level probe 121 and a high liquid level probe 123 according to the length, the common end probe 122 is the longest, and the lower end of the common end probe 122 is located in biogas slurry in the first pipeline S1 to serve as a common end. The base 110 is provided with a terminal screw cap 113 for mounting the terminal 112. The base 110 is provided with a waterproof wiring hole 111 and a base wiring terminal 112 arranged on a wiring rotary cover 113 on the base 110, and the three probes are respectively connected with the respective waterproof wiring holes 111 and further electrically connected with the controller through the wiring terminal 112. The probes are composed of electrode bars, and the three probes are all provided with insulating skins. In order to optimize the technical effect, each probe is sleeved with a hose 124, so that the phenomenon that the three probes are mistakenly connected with each other due to residual biogas slurry is effectively avoided.
And the controller is used for receiving the liquid level signal of the probe assembly 120 and controlling the starting and stopping of the pumping device S3 so as to adjust the flow rate and the flow rate. Specifically, the controller is configured to send an activation signal to the pumping device S3 when the liquid level is above the high level probe 123, i.e., to control the pumping device to turn on or adjust the flow rate. A self-locking signal is sent to the level relay of the pumping device S3 to maintain the flow condition when the liquid level is above the low level probe 121 and below the high level probe 123. A stop signal is sent to the pumping device S3 when the liquid level is below the low level probe 121.
The specific principle is as follows: the liquid level detection device is installed at the top end of the first pipeline S1, when the water is discharged through the unit, the liquid level in the first pipeline S1 rises and submerges the tail end of the probe, and when the liquid level submerges the bottom of the electrode rod of the probe assembly 120, the three electrode rods are connected by utilizing the conductivity of the liquid dung, and the high liquid level probe 123 is conducted with the common end probe 122. After the liquid level drops off the low level probe 121, the low level probe 121 and the common port probe 122 are disconnected. Based on the mechanism, a closed loop is formed, and a switching value signal is given to the equipment so as to control the pumping device S3, thereby achieving the purpose of liquid level detection.
In one embodiment, for convenience of production and cost reduction, the base 110 is made of PVC, and the waterproof wiring holes 111 are 3 threaded holes M6 on the bottom surface thereof for fixing three probes in the probe assembly 120. The top sets up the terminal 112 that corresponds the connection with 3 screw holes, promptly for binding post, the wire realizes being connected between probe and the controller, and whole base 110 is installed in 300mm base 110 central point and is put. The three probes in the probe assembly 120 are 304 stainless steel electrode bars, which are hard and not easy to deform due to external force, and are installed in the riser of the first pipeline S1 to avoid the influence of water impact on the measurement of the probes. The probe surface covers there is the insulating skin, has sheathed DN 7's PVC hose again on the basis of insulating skin simultaneously, and double protection has effectively avoided remaining liquid dung on the electrode bar to lead to the misconnection between the three electrode bars. The whole set of probe assembly is small in cross-sectional area and suitable for liquid level detection in a vertical pipe with a small inner diameter. Of course, the probe assembly can be selected in length according to the field environment, and the control liquid level can be customized according to requirements.
In airtight pumping excrement and sewage transportation process, the liquid level in the first pipeline S1 can rise once and submerge common port probe 122, low liquid level probe 121, high liquid level probe 123, the electrode bar short circuit of three probes this moment, output start signal, pumping installations S3 work, liquid level descends in the pond, high liquid level probe 123 leaves the liquid level, the inside auto-lock of liquid level relay this moment, output signal can not be interrupted, leave the liquid level until low liquid level probe 121, signal output interrupts this moment, pumping installations S3 stop work, thereby reach equipment and realize opening the function from opening according to the liquid level height.
The automatic control system in the controller converts the liquid level signal detected by the liquid level detection device into an electric signal, and the signal amplification is carried out through the liquid level relay while the self-locking is formed inside, so that a continuous switching value signal is given to the PLC, and the PLC receives the signal and then judges and controls the starting of the pumping device S3 to carry out feces conveying.
lora communication system is a point-to-point communication system between PLC, can realize the wireless data transmission between two PLC, the canned pump carries out the pumping to the field area collecting pit, when the collecting pit liquid level was too high to reach the alert liquid level, the collecting pit PLC feeds back to canned pump PLC and closes the pump and stop carrying the liquid dung, treat that the collecting pit liquid level reduces when safe liquid level, feed back to canned pump PLC and start the pump and carry out the liquid dung and carry, thereby realize whole canned pumping system's coordinated control.
Specifically, as shown in fig. 4, in the closed pumping system for fecal sewage provided by this scheme, it is first determined whether a liquid level probe in a vertical pipe (a first pipeline S1) is at a high liquid level, and when the vertical pipe is at the high liquid level, it is determined whether a vacuum tank is at the high liquid level, and when the vacuum tank is at the high liquid level, a two-phase flow pump is started, and it is determined whether a set accumulated working time has been reached, and if so, the two-phase flow pump is stopped, and is delayed for a certain time (e.g., 30S), and a filter electric push rod is opened, and after a certain time delay (e.g., 40S), an electromagnetic valve cleaning function is opened, and a certain time delay (e.g., 20S) is delayed, and the electric push rod is closed, and the electromagnetic valve is closed, and whether the set accumulated working time has been reached is determined in a cycle, and if not, the two-phase flow pump is continuously started, and if so, the above-mentioned actions are circulated. When the vacuum tank is not at the high liquid level, the electromagnetic valve or the water injection valve is opened, the sewage submerging valve is filled with water, whether the vacuum tank is at the high liquid level or not is judged, if yes, the electromagnetic valve or the water injection valve is closed, the sewage submerging valve is closed, and the two-phase flow pump is started. When the detection vertical pipe is not at a high liquid level, judging whether the liquid level probe in the pipeline detects a low liquid level, if not, circularly judging whether the liquid level probe in the pipeline detects the low liquid level, and stopping the two-phase flow pump until the liquid level is the low liquid level, thus finishing the closed pumping and water feeding link.
Therefore, the closed pumping system for the excrement and sewage disclosed by the scheme realizes unmanned operation of the closed pump when the pigsty unit drains water, and the closed pumping system has an alarm feedback mechanism, so that the risk that the collecting tank is full and overflowed is avoided, the labor is greatly saved, the labor efficiency is improved, and the labor cost is reduced.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A liquid level detecting apparatus for detecting a liquid level of a first pipe (S1) connected to each unit waste pipe (S2), comprising:
a base (110) for connecting an upper end of the first duct (S1);
a probe assembly (120) disposed at the base (110) and including a low level probe (121) and a common end probe (122) for detecting a low level and a lowest reference level of the first pipe (S1), respectively;
a controller for receiving the liquid level signal of the probe assembly (120) to control the start and stop of the pumping device (S3).
2. The liquid level detection device of claim 1, wherein the controller is at least configured to send a start signal to the pumping device (S3) when the liquid level is above the low level probe (121) and to send a stop signal to the pumping device (S3) when the liquid level is below the low level probe (121).
3. The liquid level detection apparatus according to claim 1 or 2, wherein the probe assembly (120) further comprises high level probes (123) for detecting high liquid levels of the first conduits (S1), respectively.
4. The liquid level detection device of claim 3, wherein the controller is further configured to send an activation signal to the pumping device (S3) when the liquid level is above the high level probe (123) and a self-locking signal to a level relay when the liquid level is above the low level probe (121) and below the high level probe (123).
5. The liquid level detection apparatus according to claim 1, wherein the base (110) is provided with a waterproof wiring hole (111) for connecting the probe assembly (120) and a wiring post (112) for connecting the probe assembly (120) and the controller.
6. The liquid level detection device according to claim 1, wherein a wiring screw cap (113) for mounting a wiring terminal (112) is provided on the base (110).
7. The fluid level detection apparatus according to claim 1, wherein a hose (124) for preventing water and dirt is sleeved on the probe assembly (120).
8. A closed pumping system for fecal sewage, comprising:
a blowdown port pipe for each unit (S2);
the first pipeline (S1) is connected with the unit sewage discharge port pipes (S2), the upper end of the first pipeline (S1) is provided with a liquid level detection device (1), and the lower end of the first pipeline is provided with a pipeline plug (2);
wherein the liquid level detection device (1) is a liquid level detection device (1) according to any one of claims 1 to 7.
9. A closed fecal sewage pumping system according to claim 8, further comprising a pumping device (S3) connected to the lower end of the first pipe (S1), wherein the pumping device (S3) is electrically connected to the controller of the liquid level detecting device (1) to realize the control of the start and stop of the pumping device by the liquid level signal.
10. A closed fecal sewage pumping system according to claim 9, characterized in that the pumping device (S3) is a suction pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120454035.8U CN215931024U (en) | 2021-03-02 | 2021-03-02 | Liquid level detection device and feces closed pumping system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120454035.8U CN215931024U (en) | 2021-03-02 | 2021-03-02 | Liquid level detection device and feces closed pumping system |
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| CN215931024U true CN215931024U (en) | 2022-03-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754837A (en) * | 2022-03-22 | 2022-07-15 | 创升益世(东莞)智能自控有限公司 | Device and method for detecting filtrate amount of drilling fluid |
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2021
- 2021-03-02 CN CN202120454035.8U patent/CN215931024U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114754837A (en) * | 2022-03-22 | 2022-07-15 | 创升益世(东莞)智能自控有限公司 | Device and method for detecting filtrate amount of drilling fluid |
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