Novel self-priming device for centrifugal pump
Technical Field
The utility model relates to the technical field of self-priming devices, in particular to a novel self-priming device for a centrifugal pump.
Background
The use of a self-priming device for a new centrifugal pump is a common design. The self-priming device can help the pump body to quickly establish necessary vacuum in the starting process, thereby realizing automatic liquid suction and avoiding the trouble of manually filling water or using an external auxiliary device. One common self priming device is to provide a return line in the inlet portion of the centrifugal pump that returns liquid from the outlet to the inlet of the pump, forming a closed system. Before the pump is started, a certain negative pressure is formed by filling the pump body with liquid or introducing external liquid into the pump body, so that the liquid can be automatically absorbed by the pump.
The utility model provides a self-priming device (bulletin number: CN 212563664U) of a centrifugal pump, the device comprises a self-priming device and the centrifugal pump, the self-priming device comprises an inlet section, an outlet section, a water return pipe and a nozzle, the inlet section is of an S pipe type, the upper end of the inlet section is connected with a water inlet pipe, the lower end of the inlet section is connected with the inlet of the centrifugal pump, the nozzle is arranged in the inlet section, the outlet of the nozzle points to the inlet of the centrifugal pump, an interface connected with the water return pipe is arranged outside the inlet section, the outlet section is of a straight pipe type, the outlet section is positioned above the centrifugal pump, the upper end of the outlet section is connected with a water outlet pipeline, the lower end of the outlet section is connected with the outlet of the centrifugal pump, and the inlet section and the outlet section are communicated through the water return pipe.
The device still has the following drawbacks:
When the device is used, water flow is not filtered, and directly enters the centrifugal pump, when impurities are contained in the water flow, the impurities can be blocked in the centrifugal pump, damage is caused to the centrifugal pump, and normal use of the centrifugal pump is affected, so that a novel self-priming device for the centrifugal pump is required.
Disclosure of utility model
The utility model aims to provide a novel self-priming device for a centrifugal pump, wherein a filtering component is arranged in a self-priming tank to filter water flow, and the filtered water flow enters the centrifugal pump through a water outlet pipe, so that impurities in the water flow are avoided, and the use of the centrifugal pump is prevented from being influenced, and the problems in the background art are solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The novel self-priming device for the centrifugal pump comprises a self-priming tank, wherein a water inlet pipe is fixedly connected to the side wall of the self-priming tank, and a filtering component for filtering water is arranged in the self-priming tank;
the filter component comprises a water inlet bucket fixedly mounted at the bottom in the self-suction tank, a guide ring is fixedly connected to the inside of the water inlet bucket, a connecting pipe is fixedly connected to the inside of the water inlet bucket, a filter plate is fixedly connected to the inside of the connecting pipe, a rotating rod is connected to the inside of the filter plate in a rotating mode, the rotating rod is connected with the water inlet bucket in a rotating mode, a plurality of first impellers distributed in an annular mode are fixedly connected to the outer side of the rotating rod, a cleaning rod is fixedly connected to the outer side of the rotating rod, the cleaning rod is connected with the filter plate in a rotating mode, and a plurality of second impellers distributed in an annular mode are fixedly connected to the outer side of the rotating rod.
Preferably, the side wall of the self-priming tank is fixedly connected with a water outlet pipe, and one end of the water outlet pipe is externally connected with a centrifugal pump.
Preferably, the top of the self-priming tank is fixedly connected with a water filling pipe, and the upper end of the water filling pipe is externally connected with a water injection pipe.
Preferably, an exhaust component which is convenient for automatic exhaust is arranged at the top of the self-priming tank;
The exhaust assembly comprises an exhaust pipe fixedly mounted at the top of the self-priming tank, a fixing plate is fixedly connected to the inside of the exhaust pipe, a fixing frame is fixedly connected to the lower end of the fixing plate, a spring is sleeved on the outer side of the fixing frame, a first sealing plate is slidably connected to the outer side of the fixing frame, a sealing ring is abutted to the outer side of the first sealing plate, the sealing ring is fixedly mounted in the inside of the exhaust pipe, and a sealing assembly capable of overflowing in a waterproof mode is arranged at the lower end of the fixing frame.
Preferably, the fixing frame consists of an upper fixing disc, a lower fixing disc and a straight rod in the middle.
Preferably, the sealing assembly comprises a floating plate which is connected to the outer side of the fixing frame in a sliding mode, the upper end of the floating plate is fixedly connected with a second sealing plate, and the second sealing plate is connected with the fixing frame in a sliding mode.
Preferably, the bottom of the self-priming tank is fixedly connected with a drain pipe, and the lower end of the drain pipe is provided with a sealing plug.
Compared with the prior art, the utility model has the beneficial effects that:
According to the self-priming tank, the water in the self-priming tank passes through the water inlet hopper, enters the water outlet pipe through the connecting pipe, is discharged from the water outlet pipe, and flows through the connecting pipe, the filter plate in the connecting pipe filters the water flow to prevent impurities in the water flow from entering the centrifugal pump, the first impeller is driven to rotate when the water flow passes through the first impeller, the first impeller drives the rotating rod to rotate, the rotating rod drives the cleaning rod to rotate, the cleaning rod cleans the surface of the filter plate, impurities are prevented from being blocked on the surface of the filter plate, the water flow is influenced, the rotating rod drives the second impeller to rotate when rotating, and the second impeller stirs the water at the bottom of the self-priming tank, so that the impurities at the bottom of the self-priming tank can be coiled conveniently.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the internal structure of the present utility model;
FIG. 3 is a schematic view of a filter assembly according to the present utility model;
FIG. 4 is a schematic view of the exhaust assembly of the present utility model.
The self-priming tank is shown as 1, the water inlet pipe is shown as 2, the water inlet pipe is shown as 3, the filtering component is shown as 31, the water inlet hopper is shown as 32, the guide ring is shown as 33, the connecting pipe is shown as 34, the filter plate is shown as 35, the rotating rod is shown as 36, the first impeller is shown as 37, the cleaning rod is shown as 38, the second impeller is shown as 4, the water outlet pipe is shown as 5, the water filling pipe is shown as 6, the exhaust component is shown as 61, the exhaust pipe is shown as 62, the fixing plate is shown as 63, the fixing frame is shown as 64, the spring is shown as 65, the first sealing plate is shown as 66, the sealing ring is shown as 67, the floating plate is shown as 68, the second sealing plate is shown as 7, and the water outlet pipe is shown as 6.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, the present utility model provides a technical solution:
The novel self-priming device for the centrifugal pump comprises a self-priming tank 1, wherein a water inlet pipe 2 is fixedly connected to the side wall of the self-priming tank 1, and a filtering component 3 for filtering water is arranged in the self-priming tank 1;
The filter assembly 3 includes that fixed mounting is in the intake fill 31 of the interior bottom of inhaling jar 1, the inside fixedly connected with guide ring 32 of intake fill 31, the inside fixedly connected with connecting pipe 33 of intake fill 31, the inside fixedly connected with filter 34 of connecting pipe 33, the inside rotation of filter 34 is connected with rotary rod 35, rotary rod 35 is connected with intake fill 31 rotation, a plurality of first impellers 36 of annular distribution of the outside fixedly connected with of rotary rod 35, the outside fixedly connected with clearance pole 37 of rotary rod 35, clearance pole 37 is connected with filter 34 rotation, a plurality of second impellers 38 of annular distribution of outside fixedly connected with of rotary rod 35.
Illustratively, one end of the water inlet pipe 2 is externally connected with a one-way valve, so that water in the self-priming tank 1 is prevented from flowing out through the water inlet pipe 2.
The side wall of the self-priming tank 1 is fixedly connected with a water outlet pipe 4, and one end of the water outlet pipe 4 is externally connected with a centrifugal pump.
Illustratively, the outlet pipe 4 discharges filtered water and the centrifugal pump pumps out the water inside the outlet pipe 4.
The top of the self-priming tank 1 is fixedly connected with a water filling pipe 5, and the upper end of the water filling pipe 5 is externally connected with a water injection pipe.
Illustratively, before use of the self-priming tank 1, the water injection tube is opened, water is injected into the interior of the self-priming tank 1 through the water injection tube 5, and when the self-priming tank 1 is filled with water, the water injection tube is closed.
An exhaust component 6 which is convenient for automatic exhaust is arranged at the top of the self-priming tank 1;
The exhaust assembly 6 comprises an exhaust pipe 61 fixedly mounted at the top of the self-priming tank 1, a fixing plate 62 is fixedly connected to the inside of the exhaust pipe 61, a fixing frame 63 is fixedly connected to the lower end of the fixing plate 62, a spring 64 is sleeved on the outer side of the fixing frame 63, a first sealing plate 65 is slidingly connected to the outer side of the fixing frame 63, a sealing ring 66 is abutted to the outer side of the first sealing plate 65, the sealing ring 66 is fixedly mounted in the inside of the exhaust pipe 61, and a sealing assembly capable of preventing water from overflowing is arranged at the lower end of the fixing frame 63.
Illustratively, when the interior of the self-priming tank 1 contains air, when the air pressure of the air reaches a certain level, the air pressure pushes the first sealing plate 65 to move upwards, the spring 64 is stressed to compress, the first sealing plate 65 moves out of the sealing ring 66, the air overflows from the sealing ring 66 to discharge the air in the self-priming tank 1, and when the air pressure is reduced, the spring 64 clamps the first sealing plate 65 in the sealing ring 66 by using the elasticity, and the exhaust pipe 61 is sealed by the first sealing plate 65 and the sealing ring 66.
The fixing frame 63 is composed of an upper fixing plate, a lower fixing plate and a straight rod in the middle.
Illustratively, the mount 63 facilitates installation of components such as springs 64.
The sealing assembly comprises a floating plate 67 which is slidably connected to the outer side of the fixing frame 63, wherein a second sealing plate 68 is fixedly connected to the upper end of the floating plate 67, and the second sealing plate 68 is slidably connected with the fixing frame 63.
Illustratively, when the self-priming tank 1 contains more water, the floating plate 67 floats upwards, driving the second sealing plate 68 to clamp the bottom of the exhaust pipe 61, and the second sealing plate 68 seals the lower end of the exhaust pipe 61.
The bottom of the self-priming tank 1 is fixedly connected with a drain pipe 7, and the lower end of the drain pipe 7 is provided with a sealing plug.
Illustratively, the drain pipe 7 facilitates draining impurities from the interior of the intake bucket 31, and the sealing plug seals the lower end of the drain pipe 7.
Before the self-priming tank 1 is used, a water injection pipe is opened, water is injected into the self-priming tank 1 through a water injection pipe 5, when the self-priming tank 1 is filled with water, the water injection pipe is closed, when the self-priming tank 1 is used, water in the self-priming tank 1 is injected into the self-priming tank 1 through a water inlet pipe 2, the water enters a water outlet pipe 4 through a connecting pipe 33 and is discharged from the water outlet pipe 4, when the water passes through the connecting pipe 33, a filter plate 34 in the connecting pipe 33 filters the water, impurities in the water flow are prevented from entering a centrifugal pump, when the water passes through a first impeller 36, the first impeller 36 is driven to rotate, the first impeller 36 drives a rotary rod 35 to rotate, a cleaning rod 37 is driven to clean the surface of the filter plate 34, the impurities are prevented from blocking the surface of the filter plate 34, the water flow is influenced, when the rotary rod 35 rotates, the second impeller 38 is driven to rotate, and the water at the bottom of the self-priming tank 1 is stirred, and the impurities at the bottom of the self-priming tank 1 are conveniently rolled up;
When water flows into the self-priming tank 1, liquid is subjected to external force, dissolved gas in the liquid can be released from the solution to form bubbles, gas can be generated in the self-priming tank 1, the water level is reduced, the floating plate 67 and the second sealing plate 68 are separated from the exhaust pipe 61, when the air pressure reaches one atmosphere, the self-priming tank 1 stops self priming, so after a period of use, water flows into the self-priming tank 1 through the water injection pipe, the water flows can compress the gas in the self-priming tank 1, the air pressure is increased, the first sealing plate 65 is pushed to move upwards, the spring 64 is stressed to compress, the first sealing plate 65 moves out of the sealing ring 66, the gas overflows from the sealing ring 66 to discharge the gas in the self-priming tank 1, when the air pressure is reduced, the spring 64 clamps the first sealing plate 65 in the sealing ring 66 by utilizing elasticity, the first sealing plate 65 and the sealing ring 66 seal the exhaust pipe 61, the floating plate 67 floats upwards when the tank 1 contains more water, the second sealing plate 68 is driven to clamp the bottom of the exhaust pipe 61, the second sealing plate 68 seals the lower end of the exhaust pipe 61, and self-priming of the self-priming tank 1 is restored.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.