Automatic pump flow adjusting device

Abstract

The utility model belongs to the technical field of automatic pumps, and discloses an automatic pump flow adjusting device which comprises a bottom plate, a water turbine is fixedly mounted at the top of the bottom plate, a volute is fixedly mounted at the end of the water turbine, and an impeller fixedly connected with an output shaft of the water turbine is rotatably mounted in the volute. A water inlet pipe and a water outlet pipe are fixedly connected to the two sides of the volute correspondingly, a flow adjusting cylinder is fixedly connected to the left side of the water inlet pipe, a filter cylinder is fixedly installed at the bottom of the flow adjusting cylinder, and water flow enters the filter cylinder through a water receiving pipe and then penetrates through the filter screen to enter the flow adjusting cylinder; in the process, if impurities such as stones with large particle sizes contained in water flow can be blocked and gathered by the filter screen and fall into the slag collecting box to be collected along the slag discharging barrel under the influence of self weight, so that the stone impurities with the large particle sizes are prevented from entering the volute, and the power generation work is completed. And the pump is prevented from being jammed and damaged.

Description

Technical Field

[0001] The present application belongs to the technical field of automatic pumps, and in particular relates to an automatic pump flow regulating device. Background Art

[0002] Hydropower generation is a science and technology that studies the technical and economic issues of engineering construction and production operation that convert water energy into electrical energy. The water energy used in hydropower generation is mainly the potential energy contained in the water body. In order to achieve the conversion of water energy into electrical energy, different types of hydropower stations need to be built. When existing hydropower plants are generating hydropower, they often need to use automatic regulating pumps to control the flow of water in the pipeline to control the amount of power generated.

[0003] For example, patent number CN208641530U discloses an automatic pump flow regulating device for a hydroelectric power plant, including an automatic pump flow pump head and an automatic pump flow regulating body, wherein the automatic pump flow pump head is installed and fixed at the upper end position of the automatic pump flow regulating body, an input pipeline is arranged in the middle of the upper end of the automatic pump flow pump head, a delivery pipeline is arranged at the outer end of the automatic pump flow pump head, a pump body clamp is arranged on the peripheral side of the automatic pump flow regulating body, a line source buckle block is arranged at the outer end of the pump body clamp, buffer fixing rods are arranged at both ends of the pump body clamp, the automatic pump flow regulating body is electrically connected to an external power supply, and the buffer fixing rods include an external connection block, an installation fixing plate, a strong spring and a welding block. The automatic pump flow regulating device for a hydroelectric power plant disclosed in the utility model has the technical effect of stable limit placement, thereby avoiding fixed shaking.

[0004] During the use of this device, it was found that the technology had the following problems: the pump lacked the function of screening out large particles of mud, gravel and other debris to prevent them from entering the pump. Once large particles of debris entered the pump body, it might get stuck and cause damage to the pump body. Therefore, in order to solve this problem, it was necessary to optimize the design of the product and propose an automatic pump flow regulating device. Utility Model Content

[0005] The purpose of this application is to provide an automatic pump flow regulating device in order to solve the above-mentioned problems.

[0006] The technical solution adopted in the present application is as follows: an automatic pump flow regulating device, comprising a base plate, a water turbine is fixedly installed on the top of the base plate, a volute is fixedly installed on the end of the water turbine, an impeller fixedly connected to the output shaft of the water turbine is rotatably installed in the volute, an inlet pipe and an outlet pipe are fixedly connected on both sides of the volute, a flow regulating cylinder is fixedly connected to the left side of the water inlet pipe, a filter cylinder is fixedly installed on the bottom of the flow regulating cylinder, a water receiving pipe is fixedly connected to the left side of the filter cylinder, a slag discharge cylinder is fixedly installed on the bottom of the filter cylinder, a slag collecting box is fixedly connected to the bottom end of the slag discharge cylinder, and a sealing cover is spliced ​​at the bottom of the slag collecting box.

[0007] The four ends of the top of the sealing cover are fixedly installed with wedge rods inserted into the slag collecting box, and the outer wall of the slag collecting box is slidably installed with a locking block relative to the outer side of the plug-in end of the wedge rod, and the locking block is clamped on the outer side of the wedge rod, and the outer end of the locking block is fixedly connected with a pull rod.

[0008] A flow regulating tube is slidably installed on the right side of the inner cavity of the flow regulating tube, and the outer wall of the flow regulating tube is provided with densely distributed liquid inlet holes. A track plate is fixedly installed on the top of the flow regulating tube, and a slider is slidably installed in the track plate, and the bottom of the slider is fixedly connected to the left end of the flow regulating tube.

[0009] In a preferred embodiment, the filter cartridge and the flow regulating cartridge are designed to be interconnected, and a filter screen is fixedly installed at the connecting position between the filter cartridge and the flow regulating cartridge.

[0010] In a preferred embodiment, the slag discharge tube is designed with the left end tilted downward.

[0011] In a preferred embodiment, the joint surfaces of the slag collecting box and the sealing cover are both provided with sealing rings, and the four ends of the bottom of the slag collecting box are all provided with slots adapted to the wedge-shaped rods.

[0012] In a preferred embodiment, a sliding groove matched with a locking block is provided on an outer wall of the slag collecting box, and a return spring is sleeved and installed on the outer periphery of the locking block.

[0013] In a preferred embodiment, the opposite ends of the wedge-shaped rod and the locking block are both designed with inclined structures, a slot is provided on the outer side of the wedge-shaped rod, and the locking block is snap-fitted and installed in the slot.

[0014] In a preferred embodiment, a through hole tightly fitting with the outer wall of the flow regulating tube is opened on the right side of the inner cavity of the flow regulating tube, and the through hole is connected with the water inlet pipe. The left end of the flow regulating tube is a closed structure, and the right end of the flow regulating tube is an open structure connected with the liquid inlet hole.

[0015] In a preferred embodiment, a moving groove adapted to the slider is provided in the track plate, a lead screw is threadedly connected to the slider, and a driving motor whose output shaft is fixed to the lead screw is fixedly mounted on the right end of the track plate.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0017] 1. In the present application, by setting a filter screen, when the pump is used to generate electricity, the water inlet pipe is first connected to the high potential energy power generation water flow. At this time, the water flows into the filter cartridge through the water inlet pipe, and then passes through the filter screen to the flow regulating cartridge, and then enters the volute through the water inlet pipe to drive the impeller to rotate and is discharged from the water outlet pipe to complete the power generation work. In this process, if the water flow contains larger stones and other debris, they will be blocked and gathered by the filter screen, and under the influence of their own weight, they will fall into the slag collecting box along the slag discharge barrel to prevent larger stones and debris from entering the volute and causing damage to the pump.

[0018] 2. In the present application, by splicing the sealing cover at the bottom of the slag box, when power generation is completed and a large amount of stone and debris with too large particle size has been collected in the slag box and needs to be cleaned, the staff can first pull the pull rod outward to drive the locking block to be pulled out of the slot on the wedge rod, release the locking state of the wedge rod, and then remove the sealing cover downward to clean the slag box. After cleaning, the sealing cover is reinstalled into the bottom of the slag box. At this time, the wedge rod is inserted into the slot. Since the relative ends of the wedge rod and the locking block are both inclined, the wedge rod first abuts the locking block to compress the reset spring to move outward until the sealing cover is completely fitted with the bottom of the slag box. At this time, the locking block will encounter the slot and be snapped into the slot under the rebound of the reset spring, thereby firmly fixing the sealing cover to the bottom of the slag box. This design is convenient for cleaning the stone and debris filtered into the slag box.

[0019] 3. In the present application, a flow regulating tube with dense liquid inlet holes on the outer wall is provided. When it is necessary to adjust the water flow entering the volute for power generation, the driving motor is started to drive the screw to rotate, and then the slider can be controlled to move left and right. When the slider drives the flow regulating tube to move to the left, the number of liquid inlet holes on the outer wall of the flow regulating tube located in the flow regulating tube will increase, so that the water flow in the flow regulating tube can enter the volute on the rear side of the water inlet pipe through the liquid inlet holes on the flow regulating tube faster. Conversely, when the flow regulating tube moves to the right, the number of liquid inlet holes in the flow regulating tube is reduced, so that the water flow in the flow regulating tube is decelerated when passing through the flow regulating tube, thereby achieving the function of regulating the flow through this design. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the main structural view of this application;

[0021] Figure 2 It is a structural cross-sectional view of the flow regulating cartridge and the filter cartridge in this application;

[0022] Figure 3 It is a structural schematic diagram of the slag collecting box and the sealing cover in this application.

[0023] Markings in the figure: 1-bottom plate, 2-turbine, 3-volute, 4-water inlet pipe, 5-water outlet pipe, 6-flow regulating tube, 7-filter tube, 8-filter screen, 9-water connecting pipe, 10-slag discharge tube, 11-slag collecting box, 12-sealing cover, 13-sealing ring, 14-wedge rod, 15-slot, 16-locking block, 17-card slot, 18-pull rod, 19-flow regulating tube, 20-liquid inlet hole, 21-track plate, 22-slider, 23-screw. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] Reference Figure 1 , 2 , an automatic pump flow regulating device, comprising a base plate 1, a water turbine 2 is fixedly installed on the top of the base plate 1, a volute 3 is fixedly installed on the end of the water turbine 2, an impeller fixedly connected to the output shaft of the water turbine 2 is rotatably installed in the volute 3, an inlet pipe 4 and an outlet pipe 5 are fixedly connected on both sides of the volute 3, a flow regulating cylinder 6 is fixedly connected to the left side of the water inlet pipe 4, a filter cartridge 7 is fixedly installed on the bottom of the flow regulating cylinder 6, the filter cartridge 7 and the flow regulating cylinder 6 are designed to be connected to each other, a filter screen 8 is fixedly installed at the connecting position of the filter cartridge 7 and the flow regulating cylinder 6, a water receiving pipe 9 is fixedly connected to the left side of the filter cartridge 7, a slag discharge cylinder 10 is fixedly installed on the bottom of the filter cartridge 7, the slag discharge cylinder 10 is a structural design with the left end tilted downward, a slag collecting box 11 is fixedly connected to the bottom end of the slag discharge cylinder 10, and a sealing cover 12 is spliced ​​at the bottom of the slag collecting box 11.

[0026] By setting the filter screen 8, when using the present pump to generate electricity, the water inlet pipe 9 is first connected to the high potential energy generating water flow. At this time, the water flows into the filter cartridge 7 through the water inlet pipe 9, and then passes through the filter screen 8 to come into the flow regulating cartridge 6, and then enters the volute 3 through the water inlet pipe 4 to drive the impeller to rotate and is discharged from the water outlet pipe 5 to complete the power generation work. In this process, if the water flow contains larger stones and other debris, they will be blocked and gathered by the filter screen 8, and under the influence of their own weight, they will fall into the slag collecting box 11 along the slag discharge tube 10 to be gathered, so as to prevent larger stones and debris from entering the volute 3 and causing the pump to be stuck and damaged.

[0027] Reference Figure 1 , 23. The joint surfaces of the slag box 11 and the sealing cover 12 are provided with sealing rings 13. The four ends of the top of the sealing cover 12 are fixedly installed with wedge rods 14 inserted into the inside of the slag box 11. The four ends of the bottom of the slag box 11 are provided with slots 15 adapted to the wedge rods 14. A locking block 16 is slidably installed on the outer wall of the slag box 11 relative to the outer side of the plug-in end of the wedge rod 14, and the locking block 16 is snap-fitted to the outer surface of the wedge rod 14. A sliding groove adapted to the locking block 16 is provided on the outer wall of the slag box 11. A return spring is sleeved on the outer periphery of the locking block 16. The opposite ends of the wedge rod 14 and the locking block 16 are of inclined structural design. A card slot 17 is provided on the outer side of the wedge rod 14, and the locking block 16 is snap-fitted in the card slot 17. A pull rod 18 is fixedly connected to the outer end of the locking block 16.

[0028] By splicing the sealing cover 12 at the bottom of the slag box 11, when power generation is finished and a large amount of stones and debris with too large particle sizes are collected in the slag box 11 and need to be cleaned, the staff can first pull the pull rod 18 outward to drive the locking block 16 to be pulled out of the slot 17 on the wedge rod 14, release the locking state of the wedge rod 14, and then remove the sealing cover 12 downward to clean the slag box 11. After cleaning, the sealing cover 12 is reinstalled into the bottom of the slag box 11. At this time, the wedge rod 14 is inserted into the slot 15. Since the opposite ends of the wedge rod 14 and the locking block 16 are inclined, the wedge rod 14 first abuts the locking block 16 to compress the return spring to move outward until the sealing cover 12 is completely fitted with the bottom of the slag collecting box 11. At this time, the locking block 16 will encounter the slot 17 and be snapped into the slot 17 under the rebound of the return spring, thereby firmly fixing the sealing cover 12 to the bottom of the slag collecting box 11. This design is convenient for cleaning the stones and debris filtered into the slag collecting box 11.

[0029] Reference Figure 1 , 2 A flow regulating tube 19 is slidably installed on the right side of the inner cavity of the flow regulating tube 6, and a densely distributed liquid inlet holes 20 are opened on the outer wall of the flow regulating tube 19. A perforation that fits closely with the outer wall of the flow regulating tube 19 is opened on the right side of the inner cavity of the flow regulating tube 6, and the perforation is connected with the water inlet pipe 4. The left end of the flow regulating tube 19 is a closed structure, and the right end of the flow regulating tube 19 is an open structure connected with the liquid inlet hole 20. A track plate 21 is fixedly installed on the top of the flow regulating tube 6, and a slider 22 is slidably installed in the track plate 21, and the bottom of the slider 22 is fixedly connected to the left end of the flow regulating tube 19, and a moving groove adapted to the slider 22 is opened in the track plate 21, and a screw rod 23 is threadedly connected to the slider 22, and a driving motor whose output shaft is fixed to the screw rod 23 is fixedly installed on the right end of the track plate 21.

[0030] By setting a regulating tube 19 with dense liquid inlet holes 20 on the outer wall, when it is necessary to adjust the water flow entering the volute 3 for power generation, the driving motor is started to drive the screw 23 to rotate, and then the slider 22 can be controlled to move left and right. When the slider 22 drives the regulating tube 19 to move to the left, the number of liquid inlet holes 20 located in the regulating tube 6 on the outer wall of the regulating tube 19 will increase, so that the water flow in the regulating tube 6 can enter the volute 3 on the rear side of the water inlet pipe 4 faster through the liquid inlet holes 20 on the regulating tube 19. Conversely, when the regulating tube 19 moves to the right, the number of liquid inlet holes 20 located in the regulating tube 6 is reduced, so that the water flow in the regulating tube 6 is decelerated when passing through the regulating tube 19, thereby achieving the function of regulating the flow through this design.

[0031] The implementation principle of the embodiment of the present application is:

[0032] First, by setting the filter screen 8, when using the present pump to generate electricity, the water inlet pipe 9 is first connected to the high potential energy generating water flow. At this time, the water flows into the filter cartridge 7 through the water inlet pipe 9, and then passes through the filter screen 8 to come into the flow regulating cartridge 6, and then enters the volute 3 through the water inlet pipe 4 to drive the impeller to rotate and is discharged from the water outlet pipe 5 to complete the power generation work. In this process, if the water flow contains larger stones and other debris, they will be blocked and gathered by the filter screen 8, and under the influence of their own weight, they will fall into the slag collecting box 11 along the slag discharge tube 10 to be gathered, so as to prevent larger stones and debris from entering the volute 3 and causing the pump to be stuck and damaged.

[0033] Next, by splicing the sealing cover 12 at the bottom of the slag box 11, when power generation is finished and a large amount of stones and debris with too large particle sizes are collected in the slag box 11 and need to be cleaned, the staff can first pull the pull rod 18 outward to drive the locking block 16 to be pulled out of the slot 17 on the wedge rod 14, and release the locking state of the wedge rod 14, and then remove the sealing cover 12 downward to clean the slag box 11. After cleaning, the sealing cover 12 is reinstalled into the bottom of the slag box 11. At this time, the wedge rod 14 is locked. The wedge rod 14 is inserted into the slot 15. Since the opposite ends of the wedge rod 14 and the locking block 16 are inclined, the wedge rod 14 first abuts the locking block 16 to compress the return spring to move outward until the sealing cover 12 is completely fitted with the bottom of the slag collecting box 11. At this time, the locking block 16 will encounter the slot 17 and be snapped into the slot 17 under the rebound of the return spring, thereby firmly fixing the sealing cover 12 to the bottom of the slag collecting box 11. This design is convenient for cleaning the stones and debris filtered into the slag collecting box 11.

[0034] Finally, by setting a regulating tube 19 with dense liquid inlet holes 20 on the outer wall, when it is necessary to adjust the water flow entering the volute 3 for power generation, the driving motor is started to drive the screw 23 to rotate, and then the slider 22 can be controlled to move left and right. When the slider 22 drives the regulating tube 19 to move to the left, the number of liquid inlet holes 20 located in the regulating tube 6 on the outer wall of the regulating tube 19 will increase, so that the water flow in the regulating tube 6 can enter the volute 3 on the rear side of the water inlet pipe 4 faster through the liquid inlet holes 20 on the regulating tube 19. Conversely, when the regulating tube 19 moves to the right, the number of liquid inlet holes 20 located in the regulating tube 6 is reduced, so that the water flow in the regulating tube 6 is decelerated when passing through the regulating tube 19, thereby achieving the function of regulating the flow through this design.

[0035] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An automatic pump flow control device, comprising a base plate (1), characterized in that: A water turbine (2) is fixedly mounted on the top of the bottom plate (1), a volute (3) is fixedly mounted on the end of the water turbine (2), an impeller fixedly connected to the output shaft of the water turbine (2) is rotatably mounted in the volute (3), a water inlet pipe (4) and a water outlet pipe (5) are fixedly connected on both sides of the volute (3), a flow regulating cylinder (6) is fixedly connected on the left side of the water inlet pipe (4), a filter cylinder (7) is fixedly mounted on the bottom of the flow regulating cylinder (6), a water receiving pipe (9) is fixedly connected on the left side of the filter cylinder (7), a slag discharge cylinder (10) is fixedly mounted on the bottom of the filter cylinder (7), a slag collecting box (11) is fixedly connected to the bottom end of the slag discharge cylinder (10), and a sealing cover (12) is spliced ​​on the bottom of the slag collecting box (11); The four ends of the top of the sealing cover (12) are all fixedly mounted with a wedge-shaped rod (14) inserted into the interior of the slag collecting box (11); a locking block (16) is slidably mounted on the outer wall of the slag collecting box (11) relative to the outer side of the plug-in end of the wedge-shaped rod (14); the locking block (16) is snap-fitted onto the outer side surface of the wedge-shaped rod (14); and the outer end of the locking block (16) is fixedly connected with a pull rod (18); A flow regulating tube (19) is slidably mounted on the right side of the inner cavity of the flow regulating tube (6), and the outer wall of the flow regulating tube (19) is provided with densely distributed liquid inlet holes (20). A track plate (21) is fixedly mounted on the top of the flow regulating tube (6), and a slider (22) is slidably mounted inside the track plate (21), and the bottom of the slider (22) is fixedly connected to the left end of the flow regulating tube (19).

2. An automatic pump flow regulating device as claimed in claim 1, characterized in that: The filter cartridge (7) and the flow regulating cartridge (6) are designed to be interconnected, and a filter screen (8) is fixedly installed at the connection position between the filter cartridge (7) and the flow regulating cartridge (6).

3. An automatic pump flow regulating device as claimed in claim 1, characterized in that: The slag discharge tube (10) is designed to have a downwardly inclined left end.

4. An automatic pump flow regulating device as claimed in claim 1, characterized in that: The joint surfaces of the slag collecting box (11) and the sealing cover (12) are both provided with sealing rings (13), and the four ends of the bottom of the slag collecting box (11) are both provided with slots (15) adapted to the wedge rods (14).

5. An automatic pump flow regulating device as claimed in claim 1, characterized in that: The outer wall of the slag collecting box (11) is provided with a sliding groove matched with the locking block (16), and the outer periphery of the locking block (16) is sleeved with a return spring.

6. An automatic pump flow regulating device as claimed in claim 1, characterized in that: The opposite ends of the wedge-shaped rod (14) and the locking block (16) are both designed with inclined structures. A slot (17) is provided on the outer side of the wedge-shaped rod (14), and the locking block (16) is snap-fitted and installed in the slot (17).

7. An automatic pump flow regulating device as claimed in claim 1, characterized in that: A through hole is provided on the right side of the inner cavity of the flow regulating tube (6) and is tightly fitted with the outer wall of the flow regulating tube (19), and the through hole is connected to the water inlet pipe (4). The left end of the flow regulating tube (19) is a closed structure, and the right end of the flow regulating tube (19) is an open structure connected to the liquid inlet hole (20).

8. An automatic pump flow regulating device as claimed in claim 1, characterized in that: A moving groove adapted to the slider (22) is provided in the track plate (21), a screw rod (23) is threadedly connected to the slider (22), and a driving motor whose output shaft is fixed to the screw rod (23) is fixedly mounted at the right end of the track plate (21).

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