Integrated pump gate for self-cleaning and improved flow regime

Abstract

The utility model belongs to hydraulic engineering technical field discloses a kind of integrated pump lock from cleaning and improving flow state, including first maintenance lock, second maintenance lock, door groove and the intermediate lock being set in door groove, the intermediate lock is equipped with lock pump on horizontal installation, the inlet end of this lock pump is equipped with fairing, the core component of fairing is eccentric reducer, and the pipe outer wall above its major axis horizontal plane is equipped with several outer guide vanes of helical body structure;The utility model greatly reduces the minimum suction liquid level required by water pump by the unique eccentric reducer structure, so that the sewage at the bottom of flow passage can be effectively discharged, and at the same time, the outer guide vanes can induce the upper water body to form a downward rotating flow field during water pump operation, strongly impacting and stirring the bottom sludge, making it float and be sucked and discharged, realizing the self-cleaning function of the flow passage, effectively solving the problem of bottom sludge accumulation, improving the water inflow flow state and ensuring the reliable and efficient operation of the water pump.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy engineering technology, specifically, it relates to an integrated pump gate that is self-cleaning and improves flow. Background Technology

[0002] The integrated pump gate combines the gate, pump, flap gate, hoist, and control system into one unit, used for flood control, drainage, and water exchange. The pump is horizontally installed on the intermediate gate, and an inlet horn is installed at the pump inlet.

[0003] However, the following problems often arise when using it:

[0004] 1. When the pump gate is running in winter, the minimum liquid level is often lower than the upper edge of the large end of the inlet horn, and some air will be sucked in, which will affect the long-term reliable operation of the pump gate; at the same time, the low liquid level often causes the water pump to start frequently, thus shortening the water pump life.

[0005] 2. Sludge will accumulate at the bottom of the channel, emitting a foul odor and affecting the efficient operation of the intermediate gate.

[0006] Therefore, this invention provides an integrated pump gate that can avoid the above-mentioned problems by self-cleaning and improve the flow state. Utility Model Content

[0007] To address the aforementioned shortcomings, this invention provides an integrated pump gate that is self-cleaning and improves flow conditions, effectively improving the flow state at low liquid levels, reducing pump gate vibration and noise, and improving the flow performance of sludge at the bottom of the flow channel, thus achieving the self-cleaning function of the integrated pump gate.

[0008] To solve the above-mentioned technical problems, the present utility model adopts the following technical solution: an integrated pump gate for self-cleaning and improving flow state, including maintenance gates set at the upstream and downstream of the flow channel, and a gate slot between the two maintenance gates. An intermediate gate is set in the gate slot, and a gate pump is installed horizontally on the intermediate gate. The gate pump includes a flow guide shroud set at the inlet end. The flow guide shroud includes an eccentric reducer. The outer wall of the eccentric reducer above the horizontal plane of the large end axis is provided with several external guide vanes. When sewage moves from the small end to the large end of the eccentric reducer, it drives the sewage above the large end to move downward. The sewage in the upper part rotates downward under the action of the external guide vanes, impacting the sludge at the bottom of the flow channel, causing the sludge to float and dilute the bottom sludge.

[0009] Preferably, the gate pump further includes a water pump, a guide tube, and a flap gate. The guide tube is horizontally arranged on the intermediate gate, the water pump is adapted to the guide tube and coaxially arranged inside the guide tube, and a flap gate is fixed at the outlet end of the water pump.

[0010] Preferably, multiple rear guide vanes are fixed around the inner wall of the guide tube and located at the outlet end of the water pump to eliminate the rotational motion of the liquid flowing out of the impeller and reduce hydraulic loss.

[0011] Preferably, the large end of the eccentric reducer is connected to the inlet of the guide tube, and the small end is the sewage input end. The diameter of the large end of the eccentric reducer is D1, the diameter of the small end is D2, and the ratio of D2 to D1 is in the range of 0.7 to 0.9.

[0012] Preferably, the upper edge of the small end of the eccentric reducer 311 is located above the axis of the large end, and the distance h is 100 to 500 mm. The larger the diameter of the guide tube 33, the larger the value of h, so as to ensure an appropriate eccentricity.

[0013] Preferably, the inner circumference of the eccentric reducer is fixed with several spiral-structured inner guide vanes to ensure that water enters the impeller of the water pump evenly.

[0014] Preferably, the pipe wall below the large end axis of the eccentric reducer is provided with several through arc-shaped water inlet grooves, and the inner guide vane is spaced apart from the water inlet grooves.

[0015] Preferably, the sum of the flow area of ​​the water inlet tank and the cross-sectional area of ​​the small end of the eccentric reducer is 1.05 to 1.15 times the cross-sectional area of ​​the large end of the eccentric reducer to ensure the water inlet volume.

[0016] Preferably, the maintenance gate includes a first maintenance gate located upstream of the flow channel and a second maintenance gate located downstream, which are used to cut off the water bodies upstream and downstream for maintenance of the intermediate gate. A bar screen is provided between the first maintenance gate and the second maintenance gate to intercept larger solids in the sewage, so as to ensure the reliable operation of the gate pump.

[0017] Preferably, the upper end of the intermediate gate is provided with a hoist, and the intermediate gate can move up and down in the gate slot under the drive of the hoist to cut off or connect the upstream and downstream water bodies.

[0018] Preferably, a level sensor is also included, disposed between the bar screen 7 and the gate slot 6, for monitoring the water level upstream of the intermediate gate 5. The level sensor is also connected to a control system, transmitting the monitored signal to the control system to control the operation of the water pump. The first level a is the starting level of the water pump; when the level reaches the first level, the water pump starts operating and discharges wastewater. The second level b is the stopping level; the height of the second level is the height of the upper edge of the small end of the guide shroud. When the level drops to the second level, the water pump stops operating.

[0019] The technical solution of this utility model has the following beneficial effects:

[0020] 1. By installing an eccentric reducer with an eccentric structure at the inlet of the water pump, the minimum suction liquid level required by the water pump is significantly reduced, ensuring that sewage at the bottom of the flow channel can be effectively discharged;

[0021] 2. Through the action of the external guide vanes, the upper water body is induced to form a downward rotating flow field during the operation of the water pump, which strongly impacts and stirs up the bottom sludge, improves the flow effect of the sludge at the bottom of the pump gate, and realizes the self-cleaning function of the flow channel.

[0022] 3. The design of the inner guide vanes and the inlet channel improves the inlet flow pattern, ensures that the water flows into the pump evenly and smoothly, reduces pump vibration and noise, and improves operating efficiency;

[0023] 4. The overall structural design is reasonable, which effectively solves the problem of mud accumulation at the bottom of traditional pump gates, reduces maintenance costs, and improves operational reliability. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the integrated pump gate structure according to an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the gate pump structure according to an embodiment of the present utility model;

[0026] Figure 3 This is a front view of the flow guide structure according to an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the distribution of the outer guide vanes in an embodiment of this utility model.

[0028] In the diagram: 1. Second maintenance gate; 2. Liquid level sensor; 3. Gate pump; 31. Flow guide shroud; 311. Eccentric reducer; 312. Outer guide vane; 313. Inner guide vane; 314. Inlet trough; 32. Water pump; 33. Flow guide tube; 331. Rear guide vane; 34. Flap gate; 4. Hoist; 5. Intermediate gate; 6. Gate slot; 7. Bar screen cleaner; 8. First maintenance gate. Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0030] like Figure 1As shown, an integrated pump gate for self-cleaning and improved flow includes a second maintenance gate 1, a gate pump 3, a hoist 4, an intermediate gate 5, a gate slot 6, a bar screen cleaner 7, and a first maintenance gate 8. The intermediate gate 5 is disposed within the gate slot 6, and the hoist 4 is located at the upper end of the intermediate gate 5. The first maintenance gate 8 is located upstream of the intermediate gate 5, and the bar screen cleaner 7 is located between the first gate 8 and the intermediate gate 5. The second maintenance gate 1 is located downstream of the intermediate gate 5. The gate pump 3 is horizontally installed on the intermediate gate 5.

[0031] Specifically, the intermediate gate 5 moves up and down within the gate slot 6 with the hoist 4 to cut off and connect the upstream and downstream water bodies; the first maintenance gate 8 and the second maintenance gate 1 are used to cut off the upstream and downstream water bodies for maintenance of the intermediate gate 5; the bar screen 7 is used to intercept larger solids in the sewage to ensure the reliable operation of the gate pump.

[0032] Specifically, it also includes a level sensor installed between the bar screen 7 and the gate slot 6 to monitor the water level upstream of the intermediate gate 5. The level sensor is also connected to a control system, transmitting the monitored signal to the control system to control the operation of the water pump. The first level a is the pump's starting level; when the level reaches the first level, the pump starts and discharges wastewater. The second level b is the stopping level; its height is the height of the upper edge of the small end of the guide shroud. When the level drops to the second level, the pump stops operating.

[0033] like Figure 2 As shown, the gate pump 3 includes a flow guide shroud 31, a water pump 32, a flow guide cylinder 33, and a flap gate 34. The flow guide cylinder 33 is horizontally mounted on the intermediate gate 5, and the water pump 32 is mounted inside the flow guide cylinder 33. The water pump and the flow guide cylinder are adapted to each other and coaxially mounted. The inlet end of the water pump is provided with a flow guide shroud 31, and the outlet end of the water pump is provided with a flap gate 34. The flap gate is adapted to the water pump.

[0034] Preferably, the inner wall of the guide tube 33 is provided with 3 to 8 rear guide vanes 331, which are located at the outlet end of the water pump to eliminate the rotational motion of the liquid flowing out of the impeller, thereby reducing hydraulic loss.

[0035] like Figure 3 and Figure 4 As shown, the flow guide shroud 31 includes an eccentric reducer 311, an outer guide vane 312, an inner guide vane 313, and a water inlet trough 314.

[0036] Preferably, the large end of the eccentric reducer 311 is adapted to the inlet of the guide tube 33, the small end is the input end, the large end is the output end, the diameter of the large end is D1, and the diameter of the small end is D2, preferably D2 = (0.7~0.9)D1.

[0037] Preferably, the upper edge of the small end of the eccentric reducer 311 is located above the axis of the large end, and the distance h is 100 to 500 mm. The larger the diameter of the guide tube 33, the larger the value of h, so as to ensure an appropriate eccentricity.

[0038] Compared to the original water pump inlet, by setting an eccentric reducer 311, the minimum suction liquid level of the water pump in the integrated pump gate is greatly reduced, so that most of the sewage at the bottom of the flow channel can be discharged in time.

[0039] like Figure 3 As shown, the outer wall of the eccentric reducer 311 above the horizontal plane of the large end axis is provided with several external guide vanes 312, which are helical in shape. When sewage moves rapidly from the small end to the large end of the reducer, it drives the sewage above the large end to move rapidly downward. The sewage above rotates downward under the action of the external guide vanes 312, thereby impacting the sludge at the bottom. Especially when the liquid level drops to the upper end of the guide shroud 3, the sewage rotates and moves rapidly downward under the action of the external guide vanes 312, increasing the impact force on the sludge at the bottom of the flow channel, causing the sludge to float and dilute the bottom sludge, and most of the sewage enters the small end of the reducer.

[0040] Preferably, the inner circumference of the eccentric reducer 311 is provided with a plurality of inner guide vanes 313, which are helical to ensure the uniformity of the fluid and allow the water to enter the impeller of the water pump evenly.

[0041] Preferably, the pipe wall below the axis of the large end of the eccentric reducer 311 is provided with several through arc-shaped water inlet grooves 314. Inside the guide shroud, the inner guide vane 313 and the water inlet grooves 314 are independent of each other, and the water inlet grooves and the inner guide vane are arranged at intervals. The sum of the area of ​​the water inlet groove 314 and the area of ​​the small end of the eccentric reducer 311 is equal to 1.05 to 1.15 times the area of ​​the large end, so as to ensure that the water pump has sufficient water intake.

[0042] The working process of an integrated pump gate that is self-cleaning and improves flow regime is as follows:

[0043] When the liquid level reaches the first level a, the water pump starts running. As the pump impeller rotates at high speed, the sewage moves from the inlet to the outlet of the guide tube 33. As the sewage moves rapidly from the small end to the large end of the reducer, it drives the sewage above the large end of the eccentric reducer 311 to move rapidly downward. The upper sewage rotates downward under the action of the outer guide vane 312, thereby impacting the sludge at the bottom. Especially when the liquid level drops to the upper end of the guide shroud 3, the sewage rotates and moves rapidly downward under the action of the outer guide vane 312, increasing the impact on the sludge at the bottom of the flow channel, causing the sludge to float and dilute the bottom sludge. Most of the sewage enters the small end of the reducer.

[0044] At this time, the sewage flows rapidly from the inlet end of the guide tube 33 to the outlet end. Meanwhile, due to the downward inclination of the eccentric reducer, the sewage with a high mud content at the bottom of the flow channel is sucked into the guide shroud 31 through the inlet tank 34 and located between the inner guide vanes 313. The sewage entering from the inlet tank and the small end of the eccentric reducer mixes inside the guide shroud and moves evenly towards the impeller under the action of the inner guide vanes. Then, under the action of the high-speed rotating water pump impeller, it flows out of the outlet end of the guide tube 33.

[0045] When the liquid level drops to the second level b, the water pump stops operating. Compared to the original water pump inlet, by setting an eccentric reducer 311, the minimum suction liquid level of the water pump in the integrated pump gate is greatly reduced, thereby allowing most of the sewage at the bottom of the flow channel to be discharged in a timely manner.

[0046] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated pump gate for self-cleaning and improved flow, comprising maintenance gates disposed upstream and downstream of a flow channel, and a gate slot (6) between the two maintenance gates, wherein an intermediate gate (5) is disposed within the gate slot (6), characterized in that: The intermediate gate (5) is equipped with a horizontally installed gate pump (3). The gate pump (3) includes a flow guide shroud (31) at the inlet end. The flow guide shroud (31) includes an eccentric reducer (311). The outer wall of the eccentric reducer (311) above the horizontal plane of the large end axis is provided with several outer guide vanes (312). When the sewage moves from the small end to the large end of the eccentric reducer (311), it drives the sewage above the large end to move downward. The sewage in the upper part rotates downward under the action of the outer guide vanes (312), impacting the sludge at the bottom of the flow channel, causing the sludge to float and dilute the bottom sludge.

2. The integrated pump gate for self-cleaning and improved flow regime as described in claim 1, characterized in that: The gate pump (3) also includes a water pump (32), a guide tube (33) and a flap gate (34). The guide tube (33) is horizontally arranged on the intermediate gate (5). The water pump (32) is adapted to the guide tube (33) and coaxially arranged inside the guide tube (33). The outlet end of the water pump (32) is fixed with a flap gate (34).

3. An integrated pump gate for self-cleaning and improving flow regime as claimed in claim 2, wherein: The inner wall of the guide tube (33) is fixed with multiple rear guide vanes (331), which are located at the outlet end of the water pump (32) to eliminate the rotational motion of the liquid flowing out of the impeller and reduce hydraulic loss.

4. The integrated pump gate for self-cleaning and improved flow state according to claim 2, characterized in that: The large end of the eccentric reducer (311) is connected to the inlet of the guide tube (33), and the small end is the sewage input end. The diameter of the large end of the eccentric reducer (311) is D1, and the diameter of the small end is D2. The ratio of D2 to D1 satisfies: 0.7≤D2 / D1≤0.

9.

5. An integrated pump gate for self-cleaning and improving flow regime as claimed in claim 1, wherein: The inner circumference of the eccentric reducer (311) is fixed with several spiral-structured inner guide vanes (313) to allow water to enter evenly.

6. An integrated pump gate for self-cleaning and improving flow regime according to claim 5, characterized in that: The eccentric reducer (311) has several through arc-shaped water inlet grooves (314) on its pipe wall below the large end axis, and the inner guide vane (313) is spaced apart from the water inlet grooves (314).

7. The integrated pump gate for self-cleaning and improved flow regime according to claim 6, characterized in that: The sum of the area of ​​the water inlet tank (314) and the area of ​​the small end of the eccentric reducer (311) is equal to 1.05 to 1.15 times the area of ​​the large end, ensuring the water inlet volume.

8. The integrated pump gate for self-cleaning and improved flow state according to claim 1, characterized in that: The maintenance gate includes a first maintenance gate (8) located upstream of the flow channel and a second maintenance gate (1) located downstream, for maintenance of the intermediate gate (5), and a bar screen cleaner (7) is provided between the first maintenance gate (8) and the second maintenance gate (1).

9. An integrated pump gate for self-cleaning and improving flow regime as claimed in claim 1, wherein: The upper end of the intermediate gate (5) is provided with a hoist (4). The intermediate gate (5) can move up and down in the gate slot (6) under the drive of the hoist (4) to cut off or connect the upstream and downstream water bodies.

10. The integrated pump gate for self-cleaning and improved flow regime according to claim 1, characterized in that: It also includes a liquid level sensor (2) disposed between the bar screen (7) and the gate slot (6), and the liquid level sensor (2) is also connected to the control system.

Images