CN113027774B - Water station pump set starts drainage moisturizing device in proper order - Google Patents
Water station pump set starts drainage moisturizing device in proper order Download PDFInfo
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- CN113027774B CN113027774B CN202110316063.8A CN202110316063A CN113027774B CN 113027774 B CN113027774 B CN 113027774B CN 202110316063 A CN202110316063 A CN 202110316063A CN 113027774 B CN113027774 B CN 113027774B
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- impeller
- rotating shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/004—Priming of not self-priming pumps
- F04D9/006—Priming of not self-priming pumps by venting gas or using gas valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/048—Bearings magnetic; electromagnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of water pumps, in particular to a water station pump set sequential starting drainage and water supplementing device, which comprises an impeller, a rotating shaft and an impeller box, wherein the impeller is arranged at the output end of a pump body; according to the invention, the sealing part on the rotating shaft is arranged in a separable mode, when no liquid is fed, the sealing part is separated, the impeller rotates without overheating the sealing part, meanwhile, the starting current can be reduced, so that the fluctuation of a power grid is reduced, the negative pressure is pumped into the impeller box by utilizing the power of the shaft, after the relative negative pressure is reached, water enters from the liquid inlet, then the separated sealing part is attached by utilizing the transmission part through the rising of the liquid level, the sealing is realized, and meanwhile, the air suction channel and the negative pressure pumping device are closed for normal drainage.
Description
Technical Field
The invention relates to the technical field of water pumps, in particular to a drainage and water supplementing device for sequentially starting pump sets of a water station.
Background
With the rapid development of urban construction in China, many suburbs and rural areas become towns. The large land is hardened in urban construction, the pool is filled up, the low-lying land which can bear rainwater originally is also built into a cell, and the urban is flooded into disaster whenever the rainy season comes, so the importance of the drainage facility is increasingly highlighted. 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 to drain water, when water is drained, the centrifugal pumps with corresponding quantity are started according to the requirement sequence, before the centrifugal pumps are started, water is required to be filled in the impeller cavity, so that negative pressure water is generated in the center when the impeller rotates, the existing water diversion equipment which is generally used for manually filling water or externally pumps water automatically, the water diversion equipment is stopped after water is filled for restarting the water pump during water pumping, if one water diversion device corresponds to one water pump, the water pumping device is long in idle time, resource waste is caused, if one water diversion device corresponds to one group of water pumps, the starting speed is low, the water drainage requirement is difficult to meet, and a joint control switch is also required to be arranged in the starting process, so that the water diversion device and the water pump are matched in a joint mode.
Disclosure of Invention
The invention aims to provide a water station pump set sequential starting drainage water supplementing device so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a water station pump package starts drainage moisturizing device in proper order, including installing impeller, pivot at the pump output and installing the impeller box at the 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 impeller cavity in the impeller box passes through the feed liquor passageway intercommunication, the feed liquor passageway is located the below of pivot, one side of float box be equipped with the negative pressure pumping subassembly that the pivot transmission is connected, negative pressure pumping subassembly with through the passageway intercommunication of bleeding between the impeller cavity in the impeller box, the passageway of bleeding 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 be used for control mechanical seal sealing state and the transmission part of the passageway on-state of bleeding.
The pump is a pump in the prior art, no improvement is made, a float box is arranged on the outer wall of one side of the impeller box, which is close to the pump, a separation is formed between the impeller box and the float box, the float box surrounds the outside of a rotating shaft and a mechanical seal, a hole connected with the impeller box is formed in the lower part of the float box, mainly when the water level in the impeller box rises, the float in the float box floats, after the float floats by utilizing the rising of the water level, the corresponding part is driven to move so as 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 is adopted between an air suction negative pressure component and the rotating shaft, the air suction negative pressure component can be a vacuum pump and the like in the prior art, when water is needed to be drained, the pump 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 generate high-pressure heat, the water level in the impeller cavity is lower than the mechanical seal on the rotating shaft, the air suction channel pumps negative pressure into the impeller cavity through the air suction channel until the air pressure in the impeller cavity is low to a certain value, and water is fed into the air suction cavity from the air suction cavity and enters the air suction cavity to the air suction cavity, and gradually reaches the gap and the air suction channel to the seal along with the air suction channel, and the air suction channel is not needed to be closed, and the air suction channel is gradually cooled down along with the air suction channel, the air suction channel is required to be closed, the air-tight, and the air suction component is in the air suction channel is in the air sealing, and the air sealing is in the air sealing.
Preferably, the mechanical seal comprises a dynamic seal part and a static seal part, the dynamic seal part is movably connected to the rotating shaft along the axial direction, the static seal part is fixed to the impeller box, seal components are arranged on the dynamic seal part and the static seal part, a rotary disc is further fixed to the dynamic seal part, the rotary disc is located in the impeller cavity, and a magnetic ring is arranged on the rotary disc.
The dynamic seal part is installed on the rotating shaft, the static seal part is fixed on the impeller box, when the dynamic seal part is contacted with the static seal part, the dynamic seal part is contacted with a seal part on the static seal part, the seal part is made of ceramic, a rubber pad is arranged on one side of the seal part, so that a better seal effect is achieved between the rotating shaft and the impeller box, the rotating shaft and the impeller box relatively rotate, and under the condition of no water lubrication and cooling, the seal part is easy to burn out, so that under the condition of no water, the dynamic seal part and the static seal part are in a separated state, a gap seal is formed, the turntable fixed with the dynamic seal part can drive the dynamic seal part to axially displace, and then the mutual repulsion between the repulsive magnetic blocks and the magnetic rings is utilized to separate the dynamic seal part from the static seal part.
Preferably, the transmission part comprises a guide rod, a float and a valve plate, the valve plate and the float are respectively fixed at the upper end and the lower end of the guide rod, a repulsive magnetic block and an attractive magnetic block are also fixed on the guide rod, the repulsive magnetic block corresponds to the height position of the magnetic ring, the repulsive magnetic block and the magnetic ring repel each other, and when the height position of the float moves to the lowest position of the mechanical seal due to the buoyancy of water, the attractive magnetic block corresponds to the height position of the magnetic ring, and the attractive magnetic block and the magnetic ring attract each other.
When the impeller cavity is free of water, the bottom end of the guide rod is positioned at the support position in the middle of the float box due to the action of gravity, the two floats are suspended in the float movable part, the repulsive magnetic block and the magnetic ring are at the same height, the magnetic ring is just positioned at the middle position of the repulsive magnetic block, repulsive force exists between the repulsive magnetic block and the magnetic ring, the dynamic sealing part and the static sealing part are separated, the magnetic ring is an annular magnet, and one face, facing the repulsive magnetic block, of the repulsive magnetic block and one face, facing the magnetic ring, of the repulsive magnetic block are homonymous magnetic poles; when water gradually enters the impeller cavity, the water enters the float box from the liquid inlet channel until the water reaches the lower part of the mechanical seal, the two floats also reach the height of the lower edge of the mechanical seal, at the moment, the repulsive magnetic block and the attractive magnetic block move upwards, so that the attractive magnetic block reaches the height position of the magnetic ring, the magnetic ring is also positioned at the middle position of the attractive magnetic block, stronger attractive force is formed, interference of repulsive force is avoided, the dynamic seal part moves towards the direction of the static seal part and is in close contact with the dynamic seal part, and sealing is formed, so that the mechanical seal is converted from gap sealing to contact sealing through the change of the liquid level, abrasion of a seal piece is avoided under the idle state, and sealing can be timely carried out when water flow arrives.
Preferably, the width of the magnetic ring is smaller than the heights of the repelling magnetic block and the attracting magnetic block, and the movement 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-controlled switch is arranged in the valve seat.
Preferably, the negative pressure pumping assembly comprises a contact block, a slide bar, a piston, a partition plate and a one-way valve, wherein the contact block is in sliding connection with a cam on the rotating shaft, the slide bar is fixed on the contact block, the slide bar penetrates through the partition plate, the piston is fixed at the other end of the slide bar, the air pumping channel and the piston are both provided with the one-way valve, and an air chamber communicated with the air pumping channel through the one-way valve is formed between the partition plate and the piston.
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, air is discharged from the one-way valve on the piston due to the arrangement of the air suction channel and the one-way valve on the piston, when the air chamber is compressed, air enters the air chamber from the one-way valve in the air suction channel and the one-way valve in the impeller cavity when the air chamber is stretched, 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 board, a permanent magnet is fixed above the contact block, the permanent magnet and the electromagnetic coil repel or attract each other, 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, wherein a column-shaped space is arranged in the magnetic block sliding part, the repulsive magnetic block and the attractive magnetic block are in sliding connection with the inner wall of the magnetic block sliding part, 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 is surrounded on the outer side of the rotating shaft and 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 cross 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 to have larger displacement quantity with the guide rod, a space adapting to the arc-shaped supports is arranged on the movable part of the support, and in addition, the movable part of the floater is an approximately oval space so as to facilitate transmission by using the arc-shaped supports.
Preferably, the turntable and the float box are in sealing connection by adopting a non-magnetic isolation plate.
The non-magnetic isolation plate is connected in a sealing way by using a stainless steel plate, an aluminum plate or a toughened glass plate and the like, so that the magnetic attraction influence on the repelling magnetic blocks, the attracting magnetic blocks and the magnetic rings is reduced.
Preferably, the dynamic sealing part and the static sealing part have a gap in a separated state, the dynamic sealing part is provided with a blade, and the blade 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 of the gap far away from the impeller, low pressure is formed on the left side of the blades, high pressure is formed on the right side of the blades, and the air pressure in the impeller cavity is prevented from rising.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the sealing part on the rotating shaft is arranged in a separable mode, when no liquid is fed, the sealing part is separated, the impeller rotates without overheating the sealing part, the motor can be directly started, a water diversion device is not required to be used for water filling, meanwhile, the load during starting can be reduced, starting current is reduced, the influence on power grid fluctuation is reduced, the power of the shaft is utilized to pump negative pressure in the impeller box, after the relative negative pressure is achieved, water enters from the liquid inlet, then the liquid level is raised through the liquid level brought by water entering, the separated sealing part is attached by utilizing the transmission part moving along with the liquid level, sealing is realized, and meanwhile, the air suction channel and the negative pressure pumping device are closed for normal water drainage, so that in the sequential starting of the pump set, the independent water diversion, water filling and water storage equipment are not required to be used, especially in the occasion with more pump quantity, the starting time can be reduced, the well drainage effect is formed, the construction funds of a pump station and the input quantity of equipment are reduced, the linkage control difficulty of the water pump and the device is also reduced, and the starting mode is simple and convenient.
Drawings
FIG. 1 is a schematic diagram of a water station pump set in the invention in a state of sequentially starting a drainage and water supplementing device to pump negative pressure;
FIG. 2 is a schematic diagram of the water diversion state of the water station pump group sequential start drainage water replenishing device;
FIG. 3 is a schematic view of the structure of the float cassette of the present invention;
FIG. 4 is a schematic view of the structure of the float cassette of the present invention in a water inlet state;
FIG. 5 is a schematic diagram of the structure at A in FIG. 1;
FIG. 6 is a schematic view of the distribution of blades on the dynamic seal portion of the present invention.
Reference numerals in the drawings: 1. an impeller box; 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 cassette; 201. a magnetic block sliding part; 202. a bracket movable part; 203. a float movable part; 21. a guide rod; 211. an arc-shaped bracket; 22. a float; 23. repelling the magnetic block; 24. attracting the magnetic block; 3. a negative pressure pumping assembly; 301. a gas 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 following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: as shown in fig. 1-6, the water station pump set sequentially starts a drainage water supplementing device, which comprises an impeller 11 arranged at the output end of a pump, a rotating shaft 12 and an impeller box 1 arranged at the front end of a pump body, wherein a float box 2 is arranged outside one side of the impeller box 1 close to the rotating shaft 12, the float box 2 is communicated with an impeller cavity 101 in the impeller box 1 through a liquid inlet channel 103, the liquid inlet channel 103 is positioned below the rotating shaft 12, one side of the float box 2 is provided with a negative pressure pumping assembly 3 in transmission connection with the rotating shaft 12, the negative pressure pumping assembly 3 is communicated with the impeller cavity 101 in the impeller box 1 through a pumping channel 4, the pumping channel 4 is positioned above the rotating shaft 12, the rotating shaft 12 is in sealing connection with the impeller box 1 through a mechanical seal 13, and a transmission component for controlling the sealing state of the mechanical seal 13 and the conduction state of the pumping channel 4 is arranged in the float box 2.
The pump is a pump in the prior art, no improvement is made, a float box 2 is arranged on the outer wall of one side of the impeller box 1, which is close to the pump, a separation is arranged between the impeller box 1 and the float box 2, the float box 2 surrounds the outside of a rotating shaft 12 and a mechanical seal 13, a hole (a liquid inlet channel 103) connected with the impeller box 1 is arranged at the lower part of the float box 2, mainly when the water level in the impeller box 1 rises, the water can enter the float box 2, a float 22 in the float box 2 floats, after the float 22 floats by the rising of the water level, the corresponding part is driven to move to control the matching state of the mechanical seal 13 and the conduction state of an air suction channel 4, wherein a negative pressure pumping assembly 3 can adopt a gear transmission mode with the rotating shaft 12, and the like, the negative pressure pumping assembly 3 can be a vacuum pump in the prior art, and the like, when water is needed, the mechanical seal 13 is in a clearance seal, the rotating of the rotating shaft 12 does not enable the mechanical seal 13 to generate high heat, the water level in the impeller cavity 101 is lower than the mechanical seal 13, the water level in the rotating shaft 12 rises, the mechanical seal 13 is in the rotating, the air suction assembly is not enabled to rise, the air suction assembly is enabled to reach the air suction opening 102 and reach the negative pressure sealing assembly 102, and the air suction opening is enabled to reach the negative pressure sealing assembly 102, and the negative pressure is enabled to reach the sealing assembly 102, and the negative pressure is not needed to be gradually cooled by the negative pressure sealing assembly, and the air suction assembly is enabled to reach the air suction opening 4, and the sealing assembly is closed by the air suction cavity is closed, and the air sealing assembly is the air-sealed through the air suction cavity is the air level is the air-filled into the air sealing cavity is the air is needed.
Specifically, the mechanical seal 13 includes a dynamic seal portion 131 and a static seal portion 132, the dynamic seal portion 131 is movably connected to the rotating shaft 12 along an axial direction, the static seal portion 132 is fixed to the impeller box 1, seal members 133 are mounted on the dynamic seal portion 131 and the static seal portion 132, a turntable 14 is further fixed to the dynamic seal portion 131, the turntable 14 is located in the impeller cavity 101, and a magnetic ring 141 is disposed on the turntable 14.
As shown in fig. 1 and 2, the dynamic seal portion 131 is mounted on the rotating shaft 12, the static seal portion 132 is fixed on the impeller box 1, when the dynamic seal portion 131 contacts with the static seal portion 132, the dynamic seal portion 131 contacts with the seal member 133 on the static seal portion 132, the seal member 133 is made of ceramic material, a rubber pad is arranged on one side of the seal member 133, so that a better sealing effect is achieved between the rotating shaft 12 and the impeller box 1, and when the rotating shaft 12 and the impeller box 1 relatively rotate, and no water is used for lubrication and cooling, the seal member 133 is easy to burn out, so that the dynamic seal portion 131 and the static seal portion 132 are in a separated state in the absence of water, a gap seal is formed, the turntable 14 fixed with the dynamic seal portion 131 can drive the dynamic seal portion 131 to axially displace, and further, the mutual repulsion between the repulsive magnetic block 23 and the magnetic ring 141 is utilized to separate the dynamic seal portion 131 from the static seal portion 132.
Specifically, the transmission component includes a guide rod 21, a float 22 and a valve plate 41, the valve plate 41 and the float 22 are respectively fixed at the upper end and the lower end of the guide rod 21, a repulsive magnetic block 23 and an attractive magnetic block 24 are also fixed on the guide rod 21, the repulsive magnetic block 23 corresponds to the height position of the magnetic ring 141, the repulsive magnetic block 23 and the magnetic ring 141 repel each other, and when the height position of the float 22 moves to the lowest position of the mechanical seal 13 due to buoyancy of water, the attractive magnetic block 24 corresponds to the height position of the magnetic ring 141, and the attractive magnetic block 24 and the magnetic ring 141 attract each other.
As shown in fig. 1-4, when there is no water in the impeller cavity 101, the bottom end of the guide rod 21 is located at the support in the middle of the float box 2 due to gravity, two floats 22 are suspended in the float movable part 203, at this time, the repulsive magnetic block 23 and the magnetic ring 141 are at the same height, the magnetic ring 141 is just at the middle position of the repulsive magnetic block 23, repulsive force exists between the repulsive magnetic block 23 and the magnetic ring 141, so that the dynamic sealing part 131 and the static sealing part 132 are separated, the magnetic ring 141 is a ring-shaped magnet, and the side facing the repulsive magnetic block 23 and the magnetic ring 141 are the same-name magnetic poles; when water gradually enters the impeller cavity 101, water enters the float box 2 from the liquid inlet channel 103, until the water reaches the lower side of the mechanical seal 13, the two floats 22 also reach the height of the lower edge of the mechanical seal 13, at the moment, the repulsive magnetic block 23 and the attractive magnetic block 24 move upwards, so that the attractive magnetic block 24 reaches the height position of the magnetic ring 141, the magnetic ring 141 is also positioned at the middle position of the attractive magnetic block 24, stronger attractive force is formed, no interference of repulsive force exists, the movable seal part 131 moves towards the direction of the static seal part 132 and is in close contact with the static seal part to form a seal, therefore, the change from gap sealing to contact sealing of the mechanical seal 13 is realized through the change of the liquid level, abrasion of a seal piece is not caused under the idle state, and the sealing can be performed in time when water flow arrives.
Specifically, the width of the magnetic ring 141 is smaller than the heights of the repelling magnetic blocks 23 and the attracting magnetic blocks 24, and the motion stroke of the guide rod 21 is equal to the height of the repelling magnetic blocks 23, so that the repelling magnetic blocks 23 and the attracting magnetic blocks 24 can not interfere with the magnetic ring 141 or reduce the interference after moving.
Specifically, the air suction channel 4 is provided with a valve seat matched with the valve plate 41, and the valve seat is provided with a pressure-controlled switch, so that in order to achieve a better linkage matching effect, after the valve plate 41 moves to the valve seat in the air suction channel 4 to close the air suction channel 4, the negative pressure suction component 3 also needs to stop working, and therefore, the state of the negative pressure suction component 3 is controlled by matching the valve plate 41 with the pressure-controlled switch in the valve seat.
Specifically, as shown in fig. 1 and 2, the negative pressure pumping assembly 3 includes a contact block 31, a slide rod 32, a piston 33, a partition 34 and a check valve 35, where the contact block 31 is slidably connected with a cam 121 on the rotating shaft 12, the slide rod 32 is fixed on the contact block 31, and the slide rod 32 penetrates through the partition 34, the piston 33 is fixed at the other end of the slide rod 32, the air pumping channel 4 and the piston 33 are both provided with the check valve 35, an air chamber 301 communicating with the air pumping channel 4 through the check valve 35 is formed between the partition 34 and the piston 33, the contact block 31 can be a wear-resistant metal or ceramic block with a certain weight, when the rotating shaft 12 rotates, the contact block 31 is driven to move up and down, at this time, the slide rod 32 drives the piston 33 to move up and down, so that the air chamber 301 is continuously compressed and expanded, and due to the arrangement of the check valve 35 on the air pumping channel 4 and the piston 33, when the air chamber 301 is compressed, the air is discharged from the check valve 35 on the piston 33, and when the air chamber 301 is stretched, the air is introduced into the air chamber 301 from the air pumping channel 4 and the check valve 35 in the impeller cavity 101, and the air pumping cavity 101, and the air pressure in the impeller cavity 101 is continuously reduced.
Specifically, as shown in fig. 1 and 2, an electromagnetic coil 341 is fixed below the separator 34, a permanent magnet 311 is fixed above the contact block 31, the permanent magnet 311 and the electromagnetic coil 341 repel or attract each other, the electromagnetic coil 341 is connected with a voltage-controlled switch signal, in the operating state of the negative pressure pumping assembly 3, the permanent magnet 311 and the electromagnetic coil 341 repel each other, so that the contact block 31 and the cam 121 can be tightly matched, and in the non-operating state of the negative pressure pumping assembly 3, the current of the electromagnetic coil 341 is reversed, and the permanent magnet 311 and the electromagnetic coil 341 attract each other, so that the contact block 31 is not contacted with the cam 121.
Specifically, the float cassette 2 includes a magnet sliding portion 201, a support moving portion 202 and a float moving portion 203, a column-shaped space is provided in the magnet sliding portion 201, a repulsive magnet 23 and an attractive magnet 24 are slidably connected to an inner wall of the magnet sliding portion 201, a guide rod 21 is connected to the float 22 via an arc-shaped support 211, a space accommodating the arc-shaped support 211 is provided in the support moving portion 202, the float moving portion 203 surrounds the outer side of the rotary shaft 12 and the mechanical seal 13, the repulsive magnet 23 and the attractive magnet 24 can be stably slid in the magnet sliding portion 201 by the magnet sliding portion 201 having the column-shaped space without shaking, in order to enable the float 22 to cross the rotary shaft 12, two arc-shaped supports 211 are provided to enable the float 22 and the guide rod 21 to be connected, and in order to enable the float 22 and the guide rod 21 to have a large displacement amount, a space accommodating the arc-shaped support 211 is provided in the support moving portion 202, and in addition, the float moving portion 203 is a space approximating an ellipse shape so as to be driven by the arc-shaped support 211.
Specifically, the turntable 14 is in sealing connection with the float box 2 by adopting a non-magnetic conduction isolation plate 15, and the non-magnetic conduction isolation plate 15 is in sealing connection by using a 304 stainless steel plate, an aluminum plate or a toughened glass plate and the like, so that the magnetic attraction influence on the repelling magnetic block 23, the attracting magnetic block 24 and the magnetic ring 141 is reduced.
Specifically, the moving seal portion 131 and the static seal portion 132 have a gap in a separated state, the moving seal portion 131 is provided with a vane 134, the vane 134 is located in the gap, when the moving seal portion 131 rotates along with the rotating shaft 12, the vane 134 rotates, air is blown to a side of the gap away from the impeller 11, a low pressure is formed on the left side of the vane 134, a high pressure is formed on the right side, and the air pressure in the impeller cavity 101 is prevented from rising.
Working principle: when the impeller cavity 101 is free of water, the bottom end of the guide rod 21 is positioned at the support position in the middle of the float box 2 due to the action of gravity, the two floats 22 are suspended in the float movable part 203, the repulsive magnetic block 23 and the magnetic ring 141 are positioned at the same height, the magnetic ring 141 is just positioned at the middle position of the repulsive magnetic block 23, repulsive force exists between the repulsive magnetic block 23 and the magnetic ring 141, the dynamic sealing part 131 and the static sealing part 132 are separated, the magnetic ring 141 is a ring-shaped magnet, and the surface facing the repulsive magnetic block 23 are the same-name magnetic poles; when the pump rotating shaft 12 is started to rotate, the contact block 31 is driven to move up and down, at the moment, the slide rod 32 drives the piston 33 to move up and down, so that the air chamber 301 is continuously compressed and expanded, due to the arrangement of the air suction channel 4 and the check valve 35 on the piston 33, when the air chamber 301 is compressed, air is discharged from the check valve 35 on the piston 33, when the air chamber 301 is stretched, air enters the air chamber 301 from the air suction channel 4 and the check valve 35 in the impeller cavity 101, continuous air suction is formed from the impeller cavity 101, the air pressure in the impeller cavity 101 is reduced, when water gradually enters the impeller cavity 101, water enters the float box 2 from the liquid inlet channel 103, until the water reaches the lower side of the mechanical seal 13, the two floats 22 also reach the lower side of the mechanical seal 13, at the moment, the repulsive magnetic block 23 and the attractive magnetic block 24 move upwards, so that the attractive magnetic block 24 reaches the height of the magnetic ring 141, the magnetic ring 141 is also positioned at the middle position of the attraction magnetic block 24 to form stronger attraction force, and no interference of repulsive force exists, the dynamic sealing part 131 moves towards the static sealing part 132 and is in close contact to form sealing, so that the mechanical seal 13 is converted from gap sealing to contact sealing through the change of liquid level, abrasion of sealing elements is avoided under the idle state, sealing can be performed in time when water flow arrives, the permanent magnet 311 and the electromagnetic coil 341 repel each other under the working state of the negative pressure pumping assembly 3, so that the contact block 31 and the cam 121 can be matched more tightly, and when the negative pressure pumping assembly 3 does not work, the current of the electromagnetic coil 341 is reversed, the permanent magnet 311 and the electromagnetic coil 341 attract each other, and the contact block 31 is not contacted with the cam 121; therefore, the invention can realize the following effects that when the pump is needed to drain, the mechanical seal 13 is a gap seal, the rotation of the rotating shaft 12 can not lead the mechanical seal 13 to wear and generate high heat, the water level in the impeller cavity 101 is lower than the mechanical seal 13 on the rotating shaft 12, the negative pressure pumping component 3 pumps negative pressure into the impeller cavity 101 through the air pumping channel 4, until the air pressure in the impeller cavity 101 is low to a certain value, water enters the impeller cavity 101 from the liquid inlet 102 and gradually reaches the mechanical seal 13 along with the rising of the water level, at the moment, the float 22 in the float box 2 floats, the mechanical seal 13 is changed into a contact seal by the gap seal, the water is prevented from being filled, and the water is used for lubrication and cooling, at the moment, the negative pressure pumping channel 4 and the negative pressure pumping component 3 are closed along with the floating of the float 22, the impeller 11 rotates and can not cause overheat of the mechanical seal 13, starting current can be reduced simultaneously, so as to reduce power grid fluctuation, negative pressure is pumped into the impeller cavity 101 by utilizing the power of the shaft, after the relative negative pressure is achieved, water enters from the liquid inlet 102, then the separated sealing piece is attached by utilizing the transmission part to realize sealing, meanwhile, the air suction channel 4 and the negative pressure pumping device are closed, normal drainage is carried out, wherein a one-way valve or an electromagnetic valve linked with the negative pressure pumping assembly 3 is arranged at the water outlet, air intake is prevented when the negative pressure is pumped, and therefore, in the sequential starting of a pump set, independent water diversion, water filling and water storage equipment are not needed, and especially in the occasion of a large number of pumps, the investment of construction funds and equipment can be reduced, the coupling control difficulty of the water pump and the water diversion device can be reduced, and the starting mode is simple and convenient.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (1)
1. The utility model provides a water station pump package starts drainage moisturizing device in proper order which characterized in that: the pump comprises an impeller (11) arranged at the output end of the pump, a rotating shaft (12) and an impeller box (1) arranged at the front end of a pump body, wherein a float box (2) is arranged outside one side, close to the rotating shaft (12), of the impeller box (1), the float box (2) is communicated with an impeller cavity (101) in the impeller box (1) through a liquid inlet channel (103), the liquid inlet channel (103) is positioned below the rotating shaft (12), one side of the float box (2) is provided with a negative pumping pressure component (3) in transmission connection with the rotating shaft (12), the negative pumping pressure component (3) is communicated with the impeller cavity (101) in the impeller box (1) through a pumping channel (4), the pumping channel (4) is positioned above the rotating shaft (12), the rotating shaft (12) is in sealing connection with the impeller box (1) through a mechanical seal (13), and a transmission component for controlling the sealing state of the mechanical seal (13) and the conduction state of the pumping channel (4) is arranged in the float box (2).
The mechanical seal (13) comprises a dynamic seal part (131) and a static seal part (132), the dynamic seal part (131) is movably connected to the rotating shaft (12) along the axial direction, the static seal part (132) is fixed on the impeller box (1), seal components (133) are arranged on the dynamic seal part (131) and the static seal part (132), a rotary disc (14) is further fixed on the dynamic seal part (131), the rotary disc (14) is positioned in the impeller cavity (101), and a magnetic ring (141) is arranged on the rotary disc (14);
the transmission part comprises a guide rod (21), a floater (22) and a valve plate (41), wherein 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 repulsive magnetic block (23) and an attractive magnetic block (24) are also fixed on the guide rod (21), the repulsive magnetic block (23) corresponds to the magnetic ring (141) in height position, the repulsive magnetic block (23) and the magnetic ring (141) repel each other, and when the height position of the floater (22) moves to the lowest position of the mechanical seal (13) due to buoyancy of water, the attractive magnetic block (24) corresponds to the height position of the magnetic ring (141), and the attractive magnetic block (24) and the magnetic ring (141) attract each other;
the impeller box (1) and the float box (2) are separated, the float box (2) is enclosed outside the rotating shaft (12) and the mechanical seal (13), and the liquid inlet channel (103) is arranged at the lower part of the float box (2); when the water level in the impeller box (1) rises, the water can enter the float box (2) to float a float (22) in the float box (2); the sealing component (133) is made of ceramic, and a rubber pad is arranged on one side of the sealing component (133);
the float box (2) comprises a magnetic block sliding part (201), a support moving part (202) and a float moving part (203), wherein a column-shaped space is formed in the magnetic block sliding part (201), a repulsive magnetic block (23) and an attractive magnetic block (24) are slidably connected to the inner wall of the magnetic block sliding part (201), a guide rod (21) is connected with the float (22) through an arc-shaped support (211), a space for accommodating the arc-shaped support (211) is formed in the support moving part (202), and the float moving part (203) is enclosed on the outer sides of the rotating shaft (12) and the mechanical seal (13);
the dynamic sealing part (131) and the static sealing part (132) have a gap in a separated state, the dynamic sealing part (131) is provided with a blade (134), and the blade (134) is positioned in the gap;
the width of the magnetic ring (141) is smaller than the heights of the repelling magnetic blocks (23) and the attracting magnetic blocks (24), and the movement stroke of the guide rod (21) is equal to the height of the repelling magnetic blocks (23);
a valve seat matched with the valve plate (41) is arranged in the air suction channel (4), and a pressure-controlled switch is arranged in the valve seat;
the negative pressure pumping assembly (3) comprises a contact block (31), a slide bar (32), a piston (33), a partition board (34) and a one-way valve (35), wherein the contact block (31) is in sliding connection with a cam (121) on the rotating shaft (12), the slide bar (32) is fixed on the contact block (31), the slide bar (32) penetrates through the partition board (34), the piston (33) is fixed at the other end of the slide bar (32), the one-way valve (35) is arranged on each of the air pumping channel (4) and the piston (33), and an air chamber (301) communicated with the air pumping channel (4) through the one-way valve (35) is formed between the partition board (34) and the piston (33);
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) repel or attract each other, and the electromagnetic coil (341) is connected with the voltage-controlled switch through signals;
the turntable (14) is in sealing connection with the float box (2) by a non-magnetic isolation plate (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110316063.8A CN113027774B (en) | 2020-06-19 | 2020-06-19 | Water station pump set starts drainage moisturizing device in proper order |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110316063.8A CN113027774B (en) | 2020-06-19 | 2020-06-19 | Water station pump set starts drainage moisturizing device in proper order |
| CN202010566722.9A CN111677670B (en) | 2020-06-19 | 2020-06-19 | Drainage water replenishing device for sequentially starting pump sets of water station |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010566722.9A Division CN111677670B (en) | 2020-06-19 | 2020-06-19 | Drainage water replenishing device for sequentially starting pump sets of water station |
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| Publication Number | Publication Date |
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| CN113027774A CN113027774A (en) | 2021-06-25 |
| CN113027774B true CN113027774B (en) | 2023-04-21 |
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| CN202010566722.9A Active CN111677670B (en) | 2020-06-19 | 2020-06-19 | Drainage water replenishing device for sequentially starting pump sets of water station |
| CN202110316063.8A Active CN113027774B (en) | 2020-06-19 | 2020-06-19 | Water station pump set starts drainage moisturizing device in proper order |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113915173B (en) * | 2021-11-27 | 2022-09-27 | 深圳市建成机电设备有限公司 | Water affair processing machinery mixes liquid backward flow mechanism |
| CN114508493B (en) * | 2022-02-17 | 2024-03-12 | 湖南程微电力科技有限公司 | Intelligent drainage device with liquid level adjustment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3296973A (en) * | 1964-03-20 | 1967-01-10 | Sykes Ltd Henry | Centrifugal pumps |
| CN205533270U (en) * | 2016-01-27 | 2016-08-31 | 大连罗斯泵业有限公司 | High -efficient self priming pump of combined type |
| CN205605445U (en) * | 2016-05-16 | 2016-09-28 | 淄博华鲁供水设备有限公司 | Device is inhaled from carrying in water pump vacuum |
| JP6817119B2 (en) * | 2017-03-17 | 2021-01-20 | イーグル工業株式会社 | Emergency seal and sealing structure |
| CN206830463U (en) * | 2017-06-22 | 2018-01-02 | 西安文理学院 | A kind of SCM Based vacuum self priming pump |
| CN107882768B (en) * | 2017-10-27 | 2019-05-31 | 江苏大学 | A kind of unsteady flow sealing control method and its device |
| CN108533504A (en) * | 2018-06-08 | 2018-09-14 | 安徽阿莫斯泵业有限公司 | Jet stream diversion assists self priming pump |
| CN109296546A (en) * | 2018-11-19 | 2019-02-01 | 安徽阿莫斯流体技术有限公司 | A kind of inert vacuum auxiliary self priming pump |
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| CN113027774A (en) | 2021-06-25 |
| CN111677670A (en) | 2020-09-18 |
| CN111677670B (en) | 2021-05-07 |
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Effective date of registration: 20230406 Address after: 512600 No.2 Yingbin North Road, Rucheng Town, Ruyuan County, Shaoguan City, Guangdong Province Applicant after: HENGYANG (SHAOGUAN) INDUSTRY Co.,Ltd. Address before: 215000 No.136 Dengwei Road, high tech Zone, Suzhou City, Jiangsu Province Applicant before: Peng Na |
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