CN114635858A

CN114635858A - Hydraulic engineering irrigation drainage pump

Info

Publication number: CN114635858A
Application number: CN202011472604.8A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2022-06-17

Abstract

The invention relates to the technical field of centrifugal drainage pumps, and discloses a drainage pump for irrigation in water conservancy projects, which comprises a drainage pump body, wherein a transmission connecting rod is movably sleeved on one side of the outer surface of the drainage pump body, a supporting table is fixedly sleeved in the middle of the outer surface of the transmission connecting rod, a pressure spring is movably sleeved in the middle of the outer surface of the transmission connecting rod and above the supporting table, a buoyancy air bag is arranged at the top of the outer surface of the transmission connecting rod, the interior of the buoyancy air bag is communicated with a detection air bag in an inner cavity of the drainage pump body through a hose, and a conduction sleeve is arranged at the top of the outer surface of the drainage pump body. This hydraulic engineering irrigation drain pump, the setting of mutually supporting between the buoyancy through compression spring's elasticity and buoyancy gasbag to make this drain pump only can automatic closing when the water yield is not enough, and automatic start once more when the water yield is sufficient, take place the phenomenon of cavitation or unable absorption of water with effectively preventing this drain pump when the water yield is not enough.

Description

Hydraulic engineering irrigation drainage pump

Technical Field

The invention relates to the technical field of centrifugal drainage pumps, in particular to a drainage pump for irrigation in hydraulic engineering.

Background

The centrifugal draining pump is one of the main structure forms of water pump, and it utilizes high-speed rotating impeller to throw out the liquid in the pump body, and produces high-strength negative pressure in the centre portion of the impeller, and the water in the water source can be fed into the pump body by means of pipeline under the action of atmospheric pressure, so that it can implement continuous water-pumping operation of said pump body by means of continuous circulation.

However, the centrifugal pump must be filled with water when starting up, so as to prevent the pump from cavitation erosion phenomenon when running, or the phenomenon that the air density is small and the centrifugal force generated after the rotation is small, so that the water cannot be sucked into the pump body, even if the pump body is always below the water surface during operation, a large amount of heat generated by the induction coil in the process of driving the impeller to rotate at high speed is partially accumulated in the pump body to cause the temperature in the pump body to rise, since the pump body is damaged when it is operated in a high temperature environment for a long time, a water amount and temperature monitoring mechanism for the centrifugal drainage pump is needed to ensure the normal and stable operation of the centrifugal drainage pump, so as to effectively prevent the phenomenon that the water source is short of water or the temperature of the pump body is overhigh in the normal operation process of the centrifugal drainage pump.

Disclosure of Invention

Technical problem to be solved

The invention provides a water conservancy project irrigation drainage pump, which has the advantages of automatically monitoring the water quantity and temperature in a pump body in real time and controlling the running state and stability and reliability of the pump, and solves the problems that when a centrifugal pump is started, the pump body needs to be filled with water to prevent cavitation phenomenon when the pump runs, or the centrifugal force generated after the centrifugal pump rotates is small due to small air density, so that the pump body cannot suck water into the pump body, and even if the pump body is always below the water surface when the pump body runs, a large amount of heat generated by an induction coil in the process of driving a impeller to rotate at high speed is partially accumulated in the pump body to cause the rise of the internal temperature of the pump body, and the pump body can damage the components in the pump body when the pump body runs in a high-temperature environment for a long time.

(II) technical scheme

The invention provides the following technical scheme: a drainage pump for irrigation of water conservancy project comprises a drainage pump body, wherein a transmission connecting rod is movably sleeved on one side of the outer surface of the drainage pump body, a supporting table is fixedly sleeved in the middle of the outer surface of the transmission connecting rod, a pressure spring is movably sleeved in the middle of the outer surface of the transmission connecting rod and above the supporting table, a buoyancy air bag is arranged at the top of the outer surface of the transmission connecting rod, the interior of the buoyancy air bag is communicated with a detection air bag positioned in the inner cavity of the drainage pump body through a hose, the top of the external surface of the drainage pump body is provided with a conduction sleeve, the top end of the transmission connecting rod penetrates through and extends to the top of the conduction sleeve, a conducting ring I is fixedly sleeved at the top of the outer surface of the transmission connecting rod and positioned in the conducting sleeve, the inner wall of the conduction sleeve is fixedly sleeved with a conducting ring II above the conducting ring I, and the conducting ring I and the conducting ring II are respectively and electrically connected with the positive electrode and the negative electrode of the power supply in the junction box on the drainage pump body.

Preferably, the buoyancy air bag and the detection air bag are filled with inert gas in full volume.

Preferably, the maximum deformation amount of the pressure spring is larger than the height of the conductive ring I.

Preferably, the maximum buoyancy to which the buoyancy bladder is subjected is greater than the maximum elastic force of the pressure spring.

Preferably, the buoyancy air bag receives buoyancy smaller than the maximum elastic force of the pressure spring at normal temperature.

Preferably, the buoyancy air bag and the detection air bag are both made of elastic corrosion-resistant rubber materials.

(III) advantageous effects

The invention has the following beneficial effects:

1. this hydraulic engineering irrigates drain pump, through the setting of mutually supporting between pressure spring's elasticity and the buoyancy of buoyancy gasbag, when the buoyancy that the buoyancy gasbag received is greater than pressure spring's elasticity, take place mutual contact and connect the power on the drainage pump body between conducting ring I on the drive link and the conducting ring II on the conduction sleeve, when the buoyancy that the buoyancy gasbag received is less than pressure spring's elasticity, mutual separation and cut off the power on the drainage pump body between conducting ring I on the drive link and the conducting ring II on the conduction sleeve, so that this drain pump only can be automatic when the water yield is not enough close, and the start that can be automatic once more again when the water yield is sufficient, take place the phenomenon of cavitation or unable water absorption with effectively preventing this drain pump when the water yield is not enough.

2. The water conservancy project irrigation drainage pump is characterized in that the buoyancy air bag is communicated with the detection air bag, the detection air bag is matched with the elastic force of the pressure spring, and by utilizing the relationship between the expansion and contraction of inert gas on the buoyancy air bag and the buoyancy force and the drainage quantity, when the buoyancy force borne by the buoyancy air bag is far more than the elastic force of the pressure spring, the conducting ring I on the transmission connecting rod is further moved upwards to be separated from the conducting ring II on the conducting sleeve, so that the power supply on the drainage pump body is cut off, when the buoyancy force borne by the buoyancy air bag is reduced and is not enough to compress the pressure spring, the transmission connecting rod and the conducting ring I on the transmission connecting rod are driven to move downwards under the elastic force of the pressure spring to be contacted with the conducting ring II on the conducting sleeve again, so that the drainage pump body is restarted, the drainage pump can be automatically closed only when the drainage pump is above a critical temperature point, and can be automatically started again when the drainage pump is below the critical temperature point, thereby effectively preventing the phenomenon that the interior of the drainage pump is damaged due to overhigh temperature.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the invention at point A in FIG. 1;

FIG. 3 is a view showing the state of the drain pump body with respect to the amount of water in the present invention;

fig. 4 is a diagram showing a state of the drain pump body with respect to temperature in the present invention.

In the figure: 1. a drainage pump body; 2. a transmission connecting rod; 3. a support table; 4. a pressure spring; 5. a buoyant bladder; 6. detecting the air bag; 7. a conductive sleeve; 8. a conducting ring I; 9. and a conducting ring II.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, a drainage pump for irrigation in water conservancy projects comprises a drainage pump body 1, a transmission connecting rod 2 is movably sleeved on one side of the outer surface of the drainage pump body 1, a support table 3 is fixedly sleeved on the middle of the outer surface of the transmission connecting rod 2, a pressure spring 4 is movably sleeved on the middle of the outer surface of the transmission connecting rod 2 and above the support table 3, a buoyancy airbag 5 is arranged on the top of the outer surface of the transmission connecting rod 2, the inside of the buoyancy airbag 5 is communicated with a detection airbag 6 in the inner cavity of the drainage pump body 1 through a hose, a conduction sleeve 7 is arranged on the top of the outer surface of the drainage pump body 1, the top end of the transmission connecting rod 2 penetrates through and extends to the top of the conduction sleeve 7, a conduction ring i 8 is fixedly sleeved on the top of the outer surface of the transmission connecting rod 2 and inside the conduction sleeve 7, a conduction ring ii 9 is fixedly sleeved on the inner wall of the conduction sleeve 7 and above the conduction ring i 8, the inner parts of the conducting ring I8 and the conducting ring II 9 are respectively and electrically connected with the positive electrode and the negative electrode of a power supply in a junction box on the drainage pump body 1.

In the technical scheme, the buoyancy air bag 5 and the detection air bag 6 are filled with inert gas with full volume.

The inert gas is arranged in the buoyancy air bag 5 and the detection air bag 6, the chemical property of the inert gas is stable, the performance of the drainage pump cannot be changed in the long-term use process, and the stability and the reliability of the drainage pump in the use process are effectively improved.

In the technical scheme, the maximum deformation amount of the pressure spring 4 is larger than the height of the conducting ring I8.

In the technical scheme, the maximum buoyancy force borne by the buoyancy air bag 5 is larger than the maximum elastic force of the pressure spring 4.

In the technical scheme, the buoyancy force applied to the buoyancy air bag 5 at normal temperature is smaller than the maximum elastic force of the pressure spring 4.

In the technical scheme, the buoyancy air bag 5 and the detection air bag 6 are both made of elastic corrosion-resistant rubber materials.

Wherein, to the setting of buoyancy gasbag 5 with detect 6 preparation materials of gasbag, the convenient life who has prolonged this mechanism of another, another is convenient so that buoyancy gasbag 5 and the inert gas that detects in the 6 inner chambers of gasbag can mutual circulation under the phenomenon of expend with heat and contract with cold.

The use method and the working principle of the embodiment are as follows:

referring to fig. 3, when the drainage pump body 1 is slowly put into a water source, at the beginning, the buoyancy airbag 5 is not affected by the buoyancy of water, and under the elastic force of the pressure spring 4, the conductive ring i 8 is always under the conductive ring ii 9, and as the drainage pump body 1 is gradually put in, the buoyancy of the buoyancy airbag 5 is gradually increased along with the gradual rise of the water line, and further the pressure spring 4 is gradually compressed to cause the transmission link 2 to gradually move upwards, until the transmission link 2 reaches the first critical buoyancy point of fig. 3, the buoyancy of the buoyancy airbag 5 is greater than the elastic force of the pressure spring 4, the conductive ring i 8 on the transmission link 2 and the conductive ring ii 9 on the transmission sleeve 7 are in mutual contact, so as to connect the power supply on the drainage pump body 1 to make it normally work, and when the buoyancy of the water source gradually decreases, when the buoyancy force of the buoyancy air bag 5 is smaller than the elastic force of the pressure spring 4 when the second critical buoyancy point of fig. 3 is reached, under the elastic action of the pressure spring 4, the conductive ring I8 on the transmission connecting rod 2 is separated from the conductive ring II 9 on the conductive sleeve 7 again, so that the power supply on the drainage pump body 1 is cut off, the steps are repeated when the water level line rises again, and the drainage pump body 1 is opened again, so that the drainage pump body 1 is effectively ensured to be started only under the condition that the water quantity is sufficient, can be automatically closed when the water quantity is insufficient, and can be automatically started again when the water quantity is sufficient;

referring to fig. 4, when the temperature of the drainage pump body 1 is always kept below the critical temperature point of fig. 4, the drainage pump body 1 repeats the above steps all the time, and flexibly adjusts the open/close state according to the amount of water, and when the drainage pump body 1 is continuously operated for a long time, the temperature inside the drainage pump body will gradually rise, so that the inert gas in the inner cavity of the detection airbag 6 expands with heat and contracts with cold, and further a part of the gas is compressed onto the buoyancy airbag 5 through the hose, so that the volume of the buoyancy airbag 5 is increased, the displacement is increased, and the buoyancy received by the buoyancy airbag is increased, further the transmission link 2 is driven to move upwards to compress the pressure spring 4, so that the pressure spring 4 is in a fully compressed state, and meanwhile, the conductive ring i 8 on the transmission link 2 further moves upwards to separate from the conductive ring ii 9 on the transmission sleeve 7, then the power supply on the drainage pump body 1 is cut off, when the temperature in the drainage pump body 1 gradually drops, the buoyancy air bag 5 extrudes the compressed inert gas into the detection air bag 6 again under the pressure of water, so that the volume of the buoyancy air bag 5 is reduced, the water discharge is reduced, when the buoyancy force is reduced and is not enough to compress the pressure spring 4, the transmission connecting rod 2 and the conducting ring I8 on the transmission connecting rod are driven to move downwards under the elastic force of the pressure spring 4 to be contacted with the conducting ring II 9 on the conducting sleeve 7 again, and then the drainage pump body 1 is started again, when the temperature in the drainage pump body 1 rises again, the steps are repeated, thereby effectively ensuring that the internal temperature of the drainage pump can be started only when the internal temperature is below the critical temperature point of figure 4, and can be automatically closed when the internal temperature is above the critical temperature point, and when the temperature is below the critical temperature point, the starting can be automatically started again.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic engineering irrigation drain pump, includes the drain pump body (1), its characterized in that: the utility model discloses a drainage pump body, including drainage pump body (1), transmission connecting rod (2) have been cup jointed in one side activity of surface, brace table (3) have been cup jointed in the middle part of transmission connecting rod (2) surface fixedly, pressure spring (4) have been cup jointed in the middle part of transmission connecting rod (2) surface and the top activity that is located brace table (3) of transmission connecting rod (2) surface, the top of transmission connecting rod (2) surface is equipped with buoyancy gasbag (5), and the inside of buoyancy gasbag (5) is linked together through hose and detection gasbag (6) that are arranged in drainage pump body (1) inner chamber, the top of drainage pump body (1) surface is equipped with conduction sleeve (7), the top of transmission connecting rod (2) is run through and is extended to the top of conduction sleeve (7), the top of transmission connecting rod (2) surface and the inside that is located conduction sleeve (7) is fixed to be cup jointed I (8) of conducting ring, the top that just is located I (8) of conducting ring on the inner wall of conduction sleeve (7) is fixed to be cup jointed and is had the conducting ring (8) has been cup jointed II (9), the inner parts of the conducting ring I (8) and the conducting ring II (9) are respectively and electrically connected with the positive electrode and the negative electrode of a power supply in the junction box on the drainage pump body (1).

2. A pump according to claim 1, wherein: the buoyancy air bag (5) and the detection air bag (6) are filled with inert gas with full volume.

3. A pump according to claim 1, wherein: the maximum deformation amount of the pressure spring (4) is larger than the height of the conductive ring I (8).

4. A pump according to claim 1, wherein: the maximum buoyancy force borne by the buoyancy air bag (5) is larger than the maximum elastic force of the pressure spring (4).

5. A pump according to claim 1, wherein: the buoyancy force applied to the buoyancy air bag (5) at normal temperature is smaller than the maximum elastic force of the pressure spring (4).

6. A pump according to claim 1, wherein: the buoyancy air bag (5) and the detection air bag (6) are both made of elastic corrosion-resistant rubber materials.