CN219911252U - Immersible pump protection device - Google Patents

Immersible pump protection device Download PDF

Info

Publication number
CN219911252U
CN219911252U CN202321265642.5U CN202321265642U CN219911252U CN 219911252 U CN219911252 U CN 219911252U CN 202321265642 U CN202321265642 U CN 202321265642U CN 219911252 U CN219911252 U CN 219911252U
Authority
CN
China
Prior art keywords
groups
pipe
submersible pump
water
drain pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202321265642.5U
Other languages
Chinese (zh)
Inventor
李凤元
吴学志
张顺明
许站立
王志远
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shijiazhuang Yuanjian Water Pump Manufacturing Co ltd
Original Assignee
Shijiazhuang Yuanjian Water Pump Manufacturing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shijiazhuang Yuanjian Water Pump Manufacturing Co ltd filed Critical Shijiazhuang Yuanjian Water Pump Manufacturing Co ltd
Priority to CN202321265642.5U priority Critical patent/CN219911252U/en
Application granted granted Critical
Publication of CN219911252U publication Critical patent/CN219911252U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The utility model discloses a submersible pump protection device, which comprises a barrel, a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is communicated with the bottom end of the barrel, the bottom end of the water inlet pipe is communicated with the output end of the submersible pump, and the water outlet pipe is communicated with the top end of the barrel; still include thrust unit, sealing ring, closing plate and riser, the riser intercommunication sets up on the drain pipe top to drain pipe lateral wall left and right sides is provided with the outlet respectively, and the sealing ring is installed on the barrel inside wall, and thrust unit installs inside the barrel, and thrust unit is used for providing decurrent driving force to the closing plate, and thrust unit is used for the shutoff of two sets of outlet to the drain pipe, and the diameter of closing plate is greater than the aperture of sealing ring. The utility model can reduce the backflow of accumulated water, improve the reliability of interception and reduce the deposition of water in the lifting pipe.

Description

Immersible pump protection device
Technical Field
The utility model relates to the technical field of submersible pumps, in particular to a submersible pump protection device.
Background
The submerged pump is an important device for deep well water lifting, when in use, the whole unit is submerged to work, underground water is extracted to the ground surface, the submerged pump is domestic water, mine rescue, industrial cooling, farm irrigation, seawater lifting and ship load adjustment, and the submerged pump can also be used for fountain landscapes.
In the prior art, as in the patent of the utility model with the publication number of CN202914353U, the device comprises a three-section stepped reducer pipe which is an upper thin pipe, a thick pipe and a lower thin pipe from top to bottom respectively, wherein the thick pipe is formed by detachably connecting the upper thick pipe and the lower thick pipe, the upper thick pipe is integrally connected with the upper thin pipe, the lower thick pipe is integrally connected with the lower thin pipe, a turning plate capable of turning up and down is arranged at the joint of the lower thick pipe and the lower thin pipe, the turning plate covers the whole upper opening of the lower thin pipe, a sealing ring which is coaxial with the lower thin pipe is arranged on the lower surface of the turning plate, and the outer diameter of the sealing ring is larger than the inner diameter of the lower thin pipe.
But the device discovers in using, uses turns over the reliability that turns over the board to rivers shutoff relatively poor to the immersible pump outage back, the water in the outlet pipe is inconvenient for discharging, long-time ponding causes the corruption to the outlet pipe easily and damages.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a submersible pump protection device which can reduce the backflow of accumulated water, improve the intercepting reliability and reduce the deposition of water in a lifting pipe.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows.
The submerged pump protection device comprises a barrel, a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is communicated with the bottom end of the barrel, the bottom end of the water inlet pipe is communicated with the output end of the submerged pump, and the water outlet pipe is communicated with the top end of the barrel; the sealing device is arranged in the cylinder body, the pushing device is used for providing downward pushing force for the sealing plate, the pushing device is used for plugging two groups of water outlets of the drain pipe, and the diameter of the sealing plate is larger than the aperture of the sealing ring; after the submerged pump is started to work in the reservoir, water enters the cylinder through the water inlet pipe, water in the cylinder pushes the sealing plate to move upwards, then the water flows to the inside of the drain pipe through the gap between the sealing ring and the sealing plate, the sealing plate moves upwards to enable the pushing device to seal two groups of drain openings of the drain pipe, then the water in the drain pipe is lifted outwards through the lifting pipe to be discharged, after the submerged pump is powered off and stops working, higher water in the lifting pipe flows downwards and drives the sealing plate to move downwards, meanwhile, the pushing device provides downward pushing force for the sealing plate, so that the sealing plate and the sealing ring are closed, the water backflow is reduced, the intercepting reliability is improved, the pushing device is enabled to open two groups of drain openings of the drain pipe after the sealing plate moves downwards, and accordingly the water in the lifting pipe is discharged to the reservoir through the two groups of drain openings, and the water deposition in the lifting pipe is reduced.
Preferably, the pushing device comprises a first frame body, a supporting rod, a spring, a plugging block and two groups of conveying pipes, wherein the first frame body is arranged on the inner side wall of the cylinder, the supporting rod is vertically and slidably arranged on the first frame body, the bottom end of the supporting rod is connected with the top end of the sealing plate, the spring is matched and sleeved on the outer side wall of the supporting rod, the spring is arranged at the bottom end of the first frame body, the plugging block is transversely arranged in the drain pipe, the bottom end of the plugging block is connected with the top end of the supporting rod, and the two groups of conveying pipes are respectively communicated and arranged outside drain ports on two sides of the drain pipe; when the water in the barrel promotes the closing plate and upwards moves, the closing plate drives the bracing piece to upwards move, and the bracing piece upwards moves the back and drives the shutoff piece and upwards move, makes the shutoff piece seal the outlet of drain pipe left and right sides to make water promote the discharge through the riser, after the spring promotes the closing plate and downwards moves, the closing plate passes through the bracing piece and drives the shutoff piece and downwards moves, makes the shutoff piece open the outlet of drain pipe left and right sides, thereby makes the water in the riser discharge through two sets of conveyer pipes, and the water of certain altitude is accumulated on the closing plate top of being convenient for simultaneously, the immersible pump of being convenient for starts the work once more.
Preferably, the device further comprises a second frame body, a protective shell, a rotating speed sensor, a rotating shaft and blades, wherein the second frame body is arranged at the lower part of the inner side wall of the barrel, the protective shell is arranged at the top end of the second frame body, the rotating speed sensor is arranged on the inner side wall of the protective shell, the rotating shaft is rotatably arranged at the bottom end of the second frame body, the top end of the rotating shaft is communicated with the input end of the rotating speed sensor, and the blades are arranged at the bottom end of the rotating shaft; when water flows in the barrel body, the water drives the rotating shaft to rotate through the blades, the rotating speed sensor senses the rotation of the rotating shaft, after water in the reservoir is emptied, the water stops entering the barrel body to enable the rotating shaft to stop rotating, the rotating speed sensor senses the rotating shaft, accordingly, the submersible pump is conveniently closed in time, and the condition that the submersible pump idles for a long time is reduced.
Preferably, the device also comprises a plurality of groups of third frame bodies, a plurality of groups of screw rods, a plurality of groups of clamping plates and a plurality of groups of hand wheels, wherein the top ends of the plurality of groups of third frame bodies are circumferentially arranged at the lower part of the outer side wall of the cylinder body, the plurality of groups of screw rods are respectively matched with the plurality of groups of third frame bodies in a screwed manner, the plurality of groups of clamping plates are respectively rotatably arranged at the front ends of the plurality of groups of screw rods, and the plurality of groups of hand wheels are respectively fixedly arranged at the rear ends of the plurality of groups of screw rods; when the water inlet pipe is communicated with the submersible pump, the plurality of groups of hand wheels are grabbed to rotationally move the plurality of groups of screw rods, so that the plurality of groups of screw rods drive the plurality of groups of clamping plates to contact with the outer side wall of the submersible pump, and the plurality of groups of clamping plates and the plurality of groups of third frame bodies fix the barrel with the submersible pump.
Preferably, the device further comprises a controller, the rotating speed sensor is electrically connected with the controller, and the controller is electrically connected with the submersible pump; after the rotation speed sensor senses the signal that the rotating shaft stops rotating, the rotation speed sensor transmits the signal to the controller, and the controller controls the submersible pump to be closed, so that the convenience of using the device is improved.
Preferably, the water outlet pipe further comprises a flange, the top end of the water outlet pipe is communicated with the lifting pipe through the flange, and the water inlet pipe is communicated with the submersible pump through the flange; the convenience of barrel installation operation is improved.
Preferably, the controller is provided with a waterproof housing; the waterproof effect of the controller is improved.
By adopting the technical scheme, the utility model has the following technical progress.
After the submerged pump is started to work in the reservoir, water enters the cylinder through the water inlet pipe, water in the cylinder pushes the sealing plate to move upwards, then the water flows to the inside of the drain pipe through the gap between the sealing ring and the sealing plate, the sealing plate moves upwards to enable the pushing device to seal two groups of drain openings of the drain pipe, then the water in the drain pipe is lifted outwards through the lifting pipe to be discharged, after the submerged pump is powered off and stops working, higher water in the lifting pipe flows downwards and drives the sealing plate to move downwards, meanwhile, the pushing device provides downward pushing force for the sealing plate, so that the sealing plate and the sealing ring are closed, the water backflow is reduced, the intercepting reliability is improved, the pushing device is enabled to open two groups of drain openings of the drain pipe after the sealing plate moves downwards, and accordingly the water in the lifting pipe is discharged to the reservoir through the two groups of drain openings, and the water deposition in the lifting pipe is reduced.
Drawings
FIG. 1 is a schematic illustration of an axially measured structure of the present utility model;
FIG. 2 is a schematic diagram of an axial structure of a seal plate connected to a support rod or the like;
FIG. 3 is a schematic diagram of an axial structure of the connection of the second frame body and the protective shell;
FIG. 4 is a schematic view of a partial structure of a shaft measurement of a connection of a shaft to a blade or the like;
wherein: 1. a cylinder; 2. a water inlet pipe; 3. a drain pipe; 4. a seal ring; 5. a sealing plate; 6. a first frame body; 7. a support rod; 8. a spring; 9. a block; 10. a delivery tube; 11. a riser; 12. a second frame body; 13. a protective shell; 14. a rotation speed sensor; 15. a rotating shaft; 16. a blade; 17. a third frame; 18. a screw; 19. a clamping plate; 20. a hand wheel; 21. a controller; 22. and (3) a flange.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
Example 1
The utility model provides a immersible pump protection device, as shown in fig. 1 through 4, includes barrel 1, inlet tube 2, drain pipe 3, thrust unit, sealing ring 4, closing plate 5 and riser 11, and inlet tube 2 intercommunication sets up in barrel 1 bottom, inlet tube 2 bottom and immersible pump output intercommunication, and drain pipe 3 intercommunication sets up on barrel 1 top.
The riser 11 intercommunication sets up on drain pipe 3 top to drain pipe 3 lateral wall left and right sides is provided with the outlet respectively, and sealing ring 4 installs on barrel 1 inside wall, and thrust unit installs inside barrel 1, and thrust unit is used for providing decurrent driving force to closing plate 5 to thrust unit is used for the shutoff of two sets of outlet to drain pipe 3, and the diameter of closing plate 5 is greater than the aperture of sealing ring 4.
As shown in fig. 2, the pushing device comprises a first frame 6, a supporting rod 7, a spring 8, a blocking block 9 and two groups of conveying pipes 10, wherein the first frame 6 is installed on the inner side wall of the cylinder 1, the supporting rod 7 is installed on the first frame 6 in a vertically sliding mode, the bottom end of the supporting rod 7 is connected with the top end of the sealing plate 5, the spring 8 is sleeved on the outer side wall of the supporting rod 7 in a matched mode, the spring 8 is arranged at the bottom end of the first frame 6, the blocking block 9 is transversely arranged inside the drain pipe 3, the bottom end of the blocking block 9 is connected with the top end of the supporting rod 7, and the two groups of conveying pipes 10 are respectively communicated and arranged outside drain outlets on two sides of the drain pipe 3.
In this embodiment, after the submerged pump is opened in the cistern, water enters the barrel 1 through the water inlet pipe 2, water entering the barrel 1 pushes the sealing plate 5 to move upwards, then water flows to the inside of the drain pipe 3 through the gap between the sealing ring 4 and the sealing plate 5, the sealing plate 5 moves upwards to enable the pushing device to seal two groups of drain openings of the drain pipe 3, then water in the drain pipe 3 is lifted outwards through the lifting pipe 11 to be discharged, after the submerged pump is powered off and stops working, higher accumulated water in the lifting pipe 11 flows back downwards and drives the sealing plate 5 to move downwards, meanwhile, a downward pushing force is provided for the sealing plate 5 through the pushing device, so that the sealing plate 5 is closed with the sealing ring 4, the backflow of accumulated water is reduced, the reliability of interception is improved, and after the sealing plate 5 moves downwards, the pushing device opens two groups of drain openings of the drain pipe 3, so that the accumulated water in the lifting pipe 11 is discharged into the cistern through the two groups of drain openings, and the deposition of the water in the lifting pipe 11 is reduced.
Example 2
The utility model provides a immersible pump protection device, as shown in fig. 1 through 4, includes barrel 1, inlet tube 2, drain pipe 3, thrust unit, sealing ring 4, closing plate 5 and riser 11, and inlet tube 2 intercommunication sets up in barrel 1 bottom, inlet tube 2 bottom and immersible pump output intercommunication, and drain pipe 3 intercommunication sets up on barrel 1 top.
The riser 11 intercommunication sets up on drain pipe 3 top to drain pipe 3 lateral wall left and right sides is provided with the outlet respectively, and sealing ring 4 installs on barrel 1 inside wall, and thrust unit installs inside barrel 1, and thrust unit is used for providing decurrent driving force to closing plate 5 to thrust unit is used for the shutoff of two sets of outlet to drain pipe 3, and the diameter of closing plate 5 is greater than the aperture of sealing ring 4.
As shown in fig. 2, the pushing device comprises a first frame 6, a supporting rod 7, a spring 8, a blocking block 9 and two groups of conveying pipes 10, wherein the first frame 6 is installed on the inner side wall of the cylinder 1, the supporting rod 7 is installed on the first frame 6 in a vertically sliding mode, the bottom end of the supporting rod 7 is connected with the top end of the sealing plate 5, the spring 8 is sleeved on the outer side wall of the supporting rod 7 in a matched mode, the spring 8 is arranged at the bottom end of the first frame 6, the blocking block 9 is transversely arranged inside the drain pipe 3, the bottom end of the blocking block 9 is connected with the top end of the supporting rod 7, and the two groups of conveying pipes 10 are respectively communicated and arranged outside drain outlets on two sides of the drain pipe 3.
As shown in fig. 4, the embodiment further includes a second frame 12, a protective housing 13, a rotation speed sensor 14, a rotating shaft 15 and a blade 16, wherein the second frame 12 is installed at the lower part of the inner side wall of the cylinder 1, the protective housing 13 is installed at the top end of the second frame 12, the rotation speed sensor 14 is installed on the inner side wall of the protective housing 13, the rotating shaft 15 is rotatably installed at the bottom end of the second frame 12, the top end of the rotating shaft 15 is communicated with the input end of the rotation speed sensor 14, and the blade 16 is installed at the bottom end of the rotating shaft 15.
As shown in fig. 3, the embodiment further includes a plurality of groups of third frame bodies 17, a plurality of groups of screw rods 18, a plurality of groups of clamping plates 19 and a plurality of groups of hand wheels 20, wherein the top ends of the plurality of groups of third frame bodies 17 are all circumferentially arranged at the lower part of the outer side wall of the cylinder body 1, the plurality of groups of screw rods 18 are respectively matched with the screw rods to be screwed on the plurality of groups of third frame bodies 17, the plurality of groups of clamping plates 19 are respectively rotatably arranged at the front ends of the plurality of groups of screw rods 18, and the plurality of groups of hand wheels 20 are respectively fixedly arranged at the rear ends of the plurality of groups of screw rods 18.
As shown in fig. 1, the present embodiment further includes a controller 21, the rotation speed sensor 14 is electrically connected to the controller 21, and the controller 21 is electrically connected to the submersible pump.
As shown in fig. 3, the present embodiment further includes a flange 22, the top end of the drain pipe 3 is communicated with the riser pipe 11 through the flange 22, the water inlet pipe 2 is communicated with the submersible pump through the flange 22, and the controller 21 is provided with a waterproof housing.
In this embodiment, when the water in the barrel 1 pushes the sealing plate 5 to move upwards, the sealing plate 5 drives the supporting rod 7 to move upwards, the supporting rod 7 drives the blocking block 9 to move upwards after moving upwards, the blocking block 9 seals the water outlet at the left side and the right side of the drain pipe 3, thereby water is lifted and discharged through the lifting pipe 11, after the spring 8 pushes the sealing plate 5 to move downwards, the sealing plate 5 drives the blocking block 9 to move downwards through the supporting rod 7, the water outlet at the left side and the right side of the drain pipe 3 is opened by the blocking block 9, thereby water in the lifting pipe 11 is discharged through two groups of conveying pipes 10, meanwhile, water at a certain height is accumulated at the top end of the sealing plate 5, the submersible pump is convenient to start to work again, when water flows through the barrel 1, the water drives the rotating shaft 15 through the blades 16, at this moment, the rotation of the rotating shaft 15 is sensed by the rotating speed sensor 14, after the water in the reservoir is emptied, the water inlet stops to enable the rotating shaft 15 to stop rotating, the sensing of the rotating shaft 15 through the rotating speed sensor 14, thereby facilitating the closing of the submersible pump in time, and reducing the condition of long-time idling of the submersible pump.
When the submerged pump works, water enters the cylinder 1 through the water inlet pipe 2 after the submerged pump starts to work in the reservoir, the water entering the cylinder 1 pushes the sealing plate 5 to move upwards, then the water flows into the drain pipe 3 through a gap between the sealing ring 4 and the sealing plate 5, the sealing plate 5 moves upwards to enable the pushing device to seal two groups of drain ports of the drain pipe 3, then the water in the drain pipe 3 is lifted outwards through the lifting pipe 11 to be discharged, when the submerged pump stops working after power failure, higher accumulated water in the lifting pipe 11 flows downwards and drives the sealing plate 5 to move downwards, meanwhile, the pushing device provides a downwards pushing force for the sealing plate 5 to enable the sealing plate 5 to be closed with the sealing ring 4, and the pushing device opens the two groups of drain ports of the drain pipe 3 after the sealing plate 5 moves downwards, so that accumulated water in the lifting pipe 11 is discharged into the reservoir through the two groups of drain ports.

Claims (7)

1. The submersible pump protection device comprises a barrel (1), a water inlet pipe (2) and a water outlet pipe (3), wherein the water inlet pipe (2) is communicated with the bottom end of the barrel (1), the bottom end of the water inlet pipe (2) is communicated with the output end of the submersible pump, and the water outlet pipe (3) is communicated with the top end of the barrel (1); the sealing device is characterized by further comprising a pushing device, a sealing ring (4), a sealing plate (5) and a lifting pipe (11), wherein the lifting pipe (11) is communicated with the top end of the drain pipe (3), water outlets are respectively formed in the left side and the right side of the outer side wall of the drain pipe (3), the sealing ring (4) is arranged on the inner side wall of the cylinder body (1), the pushing device is arranged inside the cylinder body (1) and used for providing downward pushing force for the sealing plate (5), the pushing device is used for plugging two groups of water outlets of the drain pipe (3), and the diameter of the sealing plate (5) is larger than the aperture of the sealing ring (4).
2. The submersible pump protection device according to claim 1, wherein the pushing device comprises a first frame body (6), a supporting rod (7), a spring (8), a blocking block (9) and two groups of conveying pipes (10), the first frame body (6) is installed on the inner side wall of the cylinder body (1), the supporting rod (7) is installed on the first frame body (6) in a sliding mode up and down, the bottom end of the supporting rod (7) is connected with the top end of the sealing plate (5), the spring (8) is matched and sleeved on the outer side wall of the supporting rod (7), the spring (8) is arranged at the bottom end of the first frame body (6), the blocking block (9) is transversely arranged inside the drain pipe (3), the bottom end of the blocking block (9) is connected with the top end of the supporting rod (7), and the two groups of conveying pipes (10) are respectively communicated with the outside water outlets on two sides of the drain pipe (3).
3. The submersible pump protection device according to claim 1, wherein a second frame body (12), a protective shell (13), a rotating speed sensor (14), a rotating shaft (15) and blades (16) are arranged in the cylinder body, the second frame body (12) is arranged at the lower part of the inner side wall of the cylinder body (1), the protective shell (13) is arranged at the top end of the second frame body (12), the rotating speed sensor (14) is arranged on the inner side wall of the protective shell (13), the rotating shaft (15) is rotatably arranged at the bottom end of the second frame body (12), the top end of the rotating shaft (15) is communicated with the input end of the rotating speed sensor (14), and the blades (16) are arranged at the bottom end of the rotating shaft (15).
4. The submersible pump protection device according to claim 1, wherein a plurality of groups of third frame bodies (17), a plurality of groups of screw rods (18), a plurality of groups of clamping plates (19) and a plurality of groups of hand wheels (20) are arranged at the lower part of the outer side wall of the cylinder body (1), the plurality of groups of screw rods (18) are respectively matched with the screw rods to be screwed on the plurality of groups of third frame bodies (17), the plurality of groups of clamping plates (19) are respectively rotatably arranged at the front ends of the plurality of groups of screw rods (18), and the plurality of groups of hand wheels (20) are respectively fixedly arranged at the rear ends of the plurality of groups of screw rods (18).
5. A submersible pump protection device according to claim 3, characterized in that the rotational speed sensor (14) is electrically connected to a controller (21), the controller (21) being electrically connected to the submersible pump.
6. A submersible pump protection according to claim 1, characterized in that the top end of the drain pipe (3) communicates with the riser pipe (11) via a flange (22), and the inlet pipe (2) communicates with the submersible pump via the flange (22).
7. A submersible pump protection device according to claim 5, characterized in that the controller (21) is provided with a watertight housing.
CN202321265642.5U 2023-05-24 2023-05-24 Immersible pump protection device Active CN219911252U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321265642.5U CN219911252U (en) 2023-05-24 2023-05-24 Immersible pump protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321265642.5U CN219911252U (en) 2023-05-24 2023-05-24 Immersible pump protection device

Publications (1)

Publication Number Publication Date
CN219911252U true CN219911252U (en) 2023-10-27

Family

ID=88467483

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321265642.5U Active CN219911252U (en) 2023-05-24 2023-05-24 Immersible pump protection device

Country Status (1)

Country Link
CN (1) CN219911252U (en)

Similar Documents

Publication Publication Date Title
CN219911252U (en) Immersible pump protection device
CN113530847A (en) Immersible pump with shredding function
CN211623752U (en) Immersible pump with prevent blockking up function
CN217630343U (en) Connecting device of municipal drainage pipeline
CN213805456U (en) Drainage device for hydraulic engineering
CN211525012U (en) Petrochemical pump priming device
CN209976800U (en) Self-priming tank capable of automatically enhancing negative pressure
CN208088389U (en) A kind of dredging device for water conservancy projects
CN219472364U (en) Anti-backflow submersible pump
CN215172696U (en) Pressure relief device of rotor pump
CN216342864U (en) Immersible pump convenient to prevent to block up
CN206429433U (en) A kind of big flow portable hydraulic diagonal pumps
CN201664686U (en) Liquamatic tooth-embedded clutch impeller combination and swimming-pool bottom hydraulic-pushing automatic cleaning machine with combination
CN206409393U (en) Proof submersible sand discharging pump
CN201475438U (en) Improved structure of check valve
CN215292922U (en) Novel submersible pump capable of preventing machine burning
CN221256704U (en) Oil gas field drilling engineering mud returns discharge capacity detection device
CN217896615U (en) Foundation pit silt dredging equipment for hydraulic engineering
CN221298156U (en) Can blowdown integration pump station fast
CN201858164U (en) Liquid delivery pump for well
CN216691478U (en) Excrement pump
CN212928227U (en) Stable submersible pump for well
CN219366339U (en) Submersible pump with multiple water supply interfaces
CN220869658U (en) Pollution discharge pump
CN216538998U (en) Environment-friendly sewage centrifuge

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant