阅读说明：本技术 水站泵组顺序启动引流补水装置 (Drainage water replenishing device for sequentially starting pump sets of water station ) 是由 彭娜 于 2020-06-19 设计创作，主要内容包括：本发明涉及水泵技术领域,具体是水站泵组顺序启动引流补水装置,包括安装在泵机输出端的叶轮、转轴以及安装在泵体前端的叶轮盒,所述叶轮盒靠近所述转轴的一侧外部设有浮子盒,所述浮子盒与所述叶轮盒内的叶轮腔通过进液通道连通,所述进液通道位于所述转轴的下方；本发明将转轴上的密封部件设置成可分离形式的,当没有进液时,密封部件分离,叶轮转动不会造成密封部件的过热,同时可以减小启动电流,以降低电网波动,并利用轴的动力对叶轮盒中抽负压,达到相对负压后,水从进液口处进入,然后通过液位的上升,利用传动部件使分离的密封件贴合,实现密封,并同时将抽气通道和抽负压装置关闭,进行正常的排水。(The invention relates to the technical field of water pumps, in particular to a sequential starting, draining and water replenishing device for a pump set of a water station, which comprises an impeller, a rotating shaft and an impeller box, wherein the impeller is arranged at the output end of a pump machine; the invention sets the sealing part on the rotating shaft into a separable form, when no liquid is fed, the sealing part is separated, the impeller rotates without overheating the sealing part, and simultaneously, the starting current can be reduced to reduce the fluctuation of a power grid, the power of the shaft is utilized to pump negative pressure in the impeller box, after the relative negative pressure is reached, water enters from the liquid inlet, then the separated sealing parts are jointed by the transmission part through the rising of the liquid level to realize sealing, and simultaneously, the air pumping channel and the negative pressure pumping device are closed to carry out normal drainage.)

1. Drainage moisturizing device is started in proper order to water station pump package, its characterized in that: including installing impeller (11), pivot (12) at the pump output and installing impeller box (1) at pump body front end, impeller box (1) is close to one side outside of pivot (12) is equipped with float box (2), float box (2) with impeller cavity (101) in impeller box (1) are through inlet channel (103) intercommunication, inlet channel (103) are located the below of pivot (12), one side of float box (2) be equipped with take out negative pressure components (3) that pivot (12) transmission is connected, take out negative pressure components (3) with through pumping channel (4) intercommunication between impeller cavity (101) in impeller box (1), pumping channel (4) are located the top of pivot (12), pivot (12) with through mechanical seal (13) sealing connection between impeller box (1), and a transmission part for controlling the sealing state of the mechanical seal (13) and the conduction state of the air exhaust channel (4) is arranged in the float box (2).

2. The water station pump set sequential starting drainage water replenishing device according to claim 1, characterized in that: mechanical seal (13) are including moving sealing (131) and static sealing (132), move sealing (131) along the connection of axial activity in pivot (12) on, static sealing (132) are fixed on impeller box (1), all install seal part (133) on moving sealing (131) and static sealing (132), still be fixed with carousel (14) on moving sealing (131), carousel (14) are located in impeller chamber (101), be equipped with magnetism ring (141) on carousel (14).

3. The water station pump set sequential starting drainage water replenishing device according to claim 2, characterized in that: the transmission part comprises a guide rod (21), a floater (22) and a valve plate (41), the valve plate (41) and the floater (22) are respectively fixed at the upper end and the lower end of the guide rod (21), a repelling magnetic block (23) and an attracting magnetic block (24) are further fixed on the guide rod (21), the attracting magnetic block (24) corresponds to the height position of the magnetic ring (141), the attracting magnetic block (24) and the magnetic ring (141) repel each other, when the height position of the floater (22) moves to the lowest position of the mechanical seal (13) due to the buoyancy of water, the attracting magnetic block (24) corresponds to the height position of the magnetic ring (141), and the attracting magnetic block (24) and the magnetic ring (141) attract each other.

4. The water station pump set sequential starting drainage water replenishing device of claim 3, wherein: the width of the magnetic ring (141) is smaller than the heights of the repelling magnetic block (23) and the attracting magnetic block (24), and the motion stroke of the guide rod (21) is equal to the height of the repelling magnetic block (23).

5. The water station pump set sequential starting drainage water replenishing device of claim 3, wherein: and a valve seat matched with the valve plate (41) is arranged in the air exhaust channel (4), and a pressure control switch is arranged in the valve seat.

6. The water station pump set sequential starting drainage water replenishing device of claim 5, wherein: take out negative pressure subassembly (3) including contact piece (31), slide bar (32), piston (33), baffle (34) and check valve (35), contact piece (31) with cam (121) sliding connection on pivot (12), slide bar (32) are fixed contact piece (31) is last, just slide bar (32) run through baffle (34), piston (33) are fixed the other end of slide bar (32), bleed passage (4) with all be equipped with on piston (33) check valve (35), baffle (34) with form between piston (33) through check valve (35) with air chamber (301) of bleed passage (4) intercommunication.

7. The water station pump set sequential starting drainage water replenishing device of claim 6, wherein: an electromagnetic coil (341) is fixed below the partition plate (34), a permanent magnet (311) is fixed above the contact block (31), the permanent magnet (311) and the electromagnetic coil (341) are mutually repelled or attracted, and the electromagnetic coil (341) is in signal connection with the voltage-controlled switch.

8. The water station pump set sequential starting drainage water replenishing device of claim 3, wherein: float box (2) include magnetic path sliding part (201), support movable part (202) and float movable part (203), the space that has the column type in magnetic path sliding part (201), repulsion magnetic path (23) and attraction magnetic path (24) sliding connection are in the inner wall of magnetic path sliding part (201), guide arm (21) with connect through arc support (211) between float (22), have in the support movable part (202) and hold the space of arc support (211), float movable part (203) surround the outside of pivot (12) and mechanical seal (13).

9. The water station pump set sequential starting drainage water replenishing device according to claim 2, characterized in that: the rotary disc (14) is hermetically connected with the float box (2) by a non-magnetic conductive isolation plate (15).

10. The water station pump set sequential starting drainage water replenishing device according to claim 2, characterized in that: the dynamic sealing part (131) and the static sealing part (132) have a gap in a separation state, a blade (134) is arranged on the dynamic sealing part (131), and the blade (134) is located in the gap.

Technical Field

The invention relates to the technical field of water pumps, in particular to a drainage and water supplementing device for sequentially starting a pump set of a water station.

Background

With the rapid development of the urban construction in China, many suburbs and rural areas become towns. In urban construction, large land is hardened, ponds are filled, low-lying land which can bear rainwater originally is built into a community, and when a rainy season comes, cities are flooded frequently to cause disasters, so that the importance of waterlogging draining facilities is more and more prominent. The pump station is a device capable of providing hydraulic power and pneumatic power with certain pressure and flow, a plurality of centrifugal pumps are generally arranged in the pump station for draining water, when the waterlogging is drained, the centrifugal pumps of corresponding quantity are sequentially started according to needs, before the centrifugal pumps are started, water needs to be filled in the impeller cavity, so that negative pressure water suction is generated in the center when the impellers rotate, the existing water diversion equipment generally adopts manual irrigation or external water diversion equipment to automatically pump water, the water diversion equipment also needs to be stopped after the water is filled in the water diversion equipment and then the water pump is started, if one water diversion device corresponds to one water pump, the idle time of the water pumping device is long, the resource waste is caused, if one water diversion device corresponds to one group of water pumps, the starting speed is slow, the waterlogging draining requirements are difficult to meet, and an integrated control switch is also needed to be arranged in the starting process, so that the water diversion device is matched with the water pumps.

Disclosure of Invention

The invention aims to provide a drainage and water replenishing device for sequentially starting a pump set of a water station so as to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: drainage moisturizing device is started in order to water station pump package, including installing impeller, the pivot at the pump output and installing the impeller box at pump body front end, the impeller box is close to one side outside of pivot is equipped with the float box, the float box with inlet channel intercommunication is passed through to the impeller cavity in the impeller box, inlet channel is located the below of pivot, one side of float box be equipped with the negative pressure subassembly of taking out that the pivot transmission is connected, take out negative pressure subassembly with through pumping channel intercommunication between the impeller cavity in the impeller box, pumping channel is located the top of pivot, the pivot with through mechanical seal sealing connection between the impeller box, be equipped with in the float box and be used for control mechanical seal state and pumping channel switch on state's drive disk assembly.

The pump machine is the pump machine in the prior art, no improvement is made, a float box is arranged on the outer wall of one side, close to the pump machine, of an impeller box, the impeller box and the float box are separated, the float box surrounds the outer portion of a rotating shaft and a mechanical seal, a hole connected with the impeller box is formed in the lower portion of the float box, the float box can enter the float box when the water level in the impeller box rises, the float in the float box floats, and corresponding parts are driven to move after the float floats rise by utilizing the rising of the water level to control the matching state of the mechanical seal and the conduction state of an air suction channel, wherein a gear transmission mode and the like can be adopted between a negative pressure pumping component and the rotating shaft, the negative pressure pumping component can be a vacuum pump and the like in the prior art, when drainage is needed, the pump machine is directly opened, at the moment, the mechanical seal is a gap seal, the rotation of the rotating shaft can not enable the mechanical seal to be abraded to generate high heat, the water level in the impeller cavity is lower than the mechanical seal on the rotating shaft, the negative pressure pumping assembly pumps negative pressure into the impeller cavity through the air pumping channel until the air pressure in the impeller cavity is lower than a certain value, water enters the impeller cavity from the liquid inlet and gradually reaches the mechanical seal along with the rise of the water level, at the moment, the floater in the floater box floats, the mechanical seal is changed into contact seal from gap seal, the water is prevented from being poured in, the water is used for lubricating and cooling, at the moment, the negative pressure pumping assembly does not need to be pumped again, and the air pumping channel and the negative pressure pumping assembly are closed along with the float floating by utilizing a linkage part.

Preferably, mechanical seal includes dynamic seal portion and static seal portion, the connection of dynamic seal portion along axial activity is in the pivot, static seal portion is fixed on the impeller box, all install seal part on dynamic seal portion and the static seal portion, still be fixed with the carousel in the dynamic seal portion, the carousel is located the impeller intracavity, be equipped with the magnetism ring on the carousel.

The dynamic sealing part is arranged on the rotating shaft, the static sealing part is fixed on the impeller box, when the dynamic sealing part is in contact with the static sealing part, the dynamic sealing part is in contact with the sealing part on the static sealing part, the sealing part is made of ceramic materials, one side of the sealing part is provided with a rubber pad, so that a better sealing effect is achieved between the rotating shaft and the impeller box, the rotating shaft and the impeller box rotate relatively, the sealing part is easy to burn out under the condition that no water is used for lubricating and cooling, therefore, under the condition that no water is used, the dynamic sealing part and the static sealing part are in a separated state to form gap sealing, a rotating disc fixed with the dynamic sealing part can drive the dynamic sealing part to generate axial displacement, and then the mutual repulsion between the repulsive magnetic block and the magnetic ring is used for separating the dynamic sealing part and the static sealing part.

Preferably, the transmission component comprises a guide rod, a floater and a valve plate, the valve plate and the floater are respectively fixed at the upper end and the lower end of the guide rod, a repelling magnetic block and an attracting magnetic block are further fixed on the guide rod, the height position of the attracting magnetic block corresponds to that of the magnetic ring, the attracting magnetic block and the magnetic ring repel each other, when the height position of the floater moves to the lowest position of the mechanical seal due to buoyancy of water, the height position of the attracting magnetic block corresponds to that of the magnetic ring, and the attracting magnetic block and the magnetic ring attract each other.

When no water exists in the impeller cavity, the bottom end of the guide rod is positioned at the supporting position in the middle of the floater box due to the action of gravity, the two floaters are suspended in the movable part of the floater, the repelling magnetic block and the magnetic ring are at the same height at the moment, the magnetic ring is just at the middle position of the height of the repelling magnetic block, a repelling force exists between the repelling magnetic block and the magnetic ring, the movable sealing part and the static sealing part are separated, the magnetic ring is an annular magnet, and the surface facing the repelling magnetic block and the surface facing the magnetic ring of the repelling magnetic block are the same-name magnetic poles; when water gradually enters the impeller cavity, the water enters the floater box from the liquid inlet channel until the water reaches the lower part of the mechanical seal, the two floaters also reach the height of the lower edge of the mechanical seal, at the moment, the repelling magnetic block and the attracting magnetic block move upwards to enable the attracting magnetic block to reach the height position of the magnetic ring, the magnetic ring is also located at the middle position of the attracting magnetic block to form strong attraction without interference of the repulsion force, the movable sealing part moves towards the direction of the static sealing part and is in close contact with the static sealing part to form sealing, therefore, the mechanical seal is changed from gap sealing to contact sealing through the change of the liquid level, the abrasion of the sealing part can not be caused under the idling state, and the sealing can be carried out in time during water flow.

Preferably, the width of the magnetic ring is smaller than the heights of the repelling magnetic block and the attracting magnetic block, and the motion stroke of the guide rod is equal to the height of the repelling magnetic block.

Preferably, a valve seat matched with the valve plate is arranged in the air exhaust channel, and a pressure control switch is arranged in the valve seat.

Preferably, take out the negative pressure subassembly and include contact piece, slide bar, piston, baffle and check valve, contact piece with epaxial cam sliding connection rotates, the slide bar is fixed on the contact piece, just the slide bar runs through the baffle, the piston is fixed the other end of slide bar, bleed passage with all be equipped with on the piston the check valve, the baffle with form between the piston through the check valve with the air chamber of bleed passage intercommunication.

The contact block can be a wear-resistant metal or ceramic block with a certain weight, when the rotating shaft rotates, the contact block is driven to move up and down, at the moment, the sliding rod drives the piston to move up and down, so that the air chamber is continuously compressed and expanded, due to the arrangement of the air suction channel and the check valve on the piston, when the air chamber is compressed, air is discharged from the check valve on the piston, when the air chamber is stretched, the air enters the air chamber from the air suction channel and the check valve in the middle of the air suction channel in the impeller cavity, and continuous air suction from the impeller cavity is formed, so that the air pressure in the impeller cavity is reduced.

Preferably, an electromagnetic coil is fixed below the partition plate, a permanent magnet is fixed above the contact block, the permanent magnet and the electromagnetic coil are mutually repelled or attracted, and the electromagnetic coil is in signal connection with the voltage-controlled switch.

Preferably, the float box comprises a magnetic block sliding part, a support moving part and a float moving part, a columnar space is arranged in the magnetic block sliding part, the repelling magnetic block and the attracting magnetic block are connected to the inner wall of the magnetic block sliding part in a sliding mode, the guide rod is connected with the float through an arc-shaped support, a space for accommodating the arc-shaped support is arranged in the support moving part, and the float moving part surrounds the rotating shaft and the outer side of the mechanical seal.

The magnetic block sliding part with the column-shaped space can enable the repelling magnetic block and the attracting magnetic block to stably slide in the magnetic block sliding part without shaking, in order to enable the floater to stride across the rotating shaft, two arc-shaped supports are adopted to enable the floater to be connected with the guide rod, in order to enable the floater and the guide rod to have large displacement, the space adapting to the arc-shaped supports is arranged in the support moving part, and in addition, the floater moving part is a space approximate to an ellipse so as to be convenient for transmission by utilizing the arc-shaped supports.

Preferably, the turntable and the float box are in sealed connection by adopting a non-magnetic isolation plate.

The non-magnetic conductive isolation plate is hermetically connected with a stainless steel plate, an aluminum plate or a toughened glass plate, and the like, so that the magnetic attraction influence between the repelling magnetic block and the attracting magnetic block and the magnetic ring is reduced.

Preferably, the dynamic sealing part and the static sealing part have a gap in a separated state, and a blade is arranged on the dynamic sealing part and is positioned in the gap.

When the dynamic sealing part rotates along with the rotating shaft, the blades rotate, air is blown to one side away from the impeller in the gap, low pressure is formed on the left sides of the blades, high pressure is formed on the right sides of the blades, and the air pressure in the impeller cavity is prevented from increasing.

Compared with the prior art, the invention has the beneficial effects that:

the invention sets the sealing part on the rotating shaft into a separable form, when no liquid is fed, the sealing part is separated, the impeller rotates without overheating the sealing part, the motor can be directly started, the water diversion device is not required to be filled, simultaneously, the load during starting can be reduced, the starting current is reduced, so as to reduce the influence on the fluctuation of a power grid, negative pressure is pumped in the impeller box by utilizing the power of the shaft, water enters from the liquid inlet after reaching relative negative pressure, then the liquid level is raised by the entering of the water, the separated sealing parts are jointed by utilizing the transmission part moving along with the liquid level, the sealing is realized, the air suction channel and the negative pressure pumping device are closed at the same time, and normal drainage is carried out, therefore, in the sequential starting of the pump set, independent water diversion, filling and water storage equipment are not required to be used, particularly, the starting time can be reduced on the occasions with more pumps, form good drainage effect to reduce the construction fund of pump station and the input of equipment, also reduced the joint control degree of difficulty of water pump and diversion device, the start-up mode is simple and convenient.

Drawings

FIG. 1 is a schematic structural diagram of a negative pressure pumping state of a water station pump set sequentially starting a drainage water replenishing device;

FIG. 2 is a schematic structural diagram of a water station pump set in a water diversion state when the water station pump set is started with a drainage water replenishing device in sequence;

FIG. 3 is a schematic view of the construction of the float cassette of the present invention;

FIG. 4 is a schematic structural view showing a state in which water is introduced into the float case according to the present invention;

FIG. 5 is a schematic view of the structure at A in FIG. 1;

FIG. 6 is a schematic view showing the distribution of the blades on the dynamic seal portion of the present invention.

Reference numbers in the figures: 1. an impeller case; 101. an impeller cavity; 102. a liquid inlet; 103. a liquid inlet channel; 11. an impeller; 12. a rotating shaft; 121. a cam; 13. mechanical sealing; 131. a dynamic seal part; 132. a static seal portion; 133. a sealing member; 134. a blade; 14. a turntable; 141. a magnetic ring; 15. a non-magnetically conductive separator plate; 2. a float box; 201. a magnetic block sliding part; 202. a bracket movable part; 203. a float movable portion; 21. a guide bar; 211. an arc-shaped bracket; 22. a float; 23. a repulsive magnetic block; 24. a suction magnetic block; 3. a negative pressure pumping assembly; 301. an air chamber; 31. a contact block; 311. a permanent magnet; 32. a slide bar; 33. a piston; 34. a partition plate; 341. an electromagnetic coil; 35. a one-way valve; 4. an air extraction channel; 41. a valve plate.

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.