Seal-free self-priming pump with water return device

Abstract

The utility model discloses an unsealed self-priming pump with a water return device, which comprises a pump shell, a water inlet pipe is fixedly arranged on one side of the upper end of the pump shell, an impeller is movably arranged in the middle of the inner side of the pump shell through a rotating shaft, a liquid outlet is fixedly arranged in the middle of the upper end of the pump shell, and a gas-liquid separation bin is fixedly arranged at the upper end of the liquid outlet. A supplementing mechanism used for supplementing a water source into the pump shell is arranged at the lower end of the pump shell and comprises a connecting pipe, a storage barrel, a piston and an electric push rod, the connecting pipe is fixedly arranged in the middle of the lower end of the pump shell, and the storage barrel is fixedly arranged at the lower end of the connecting pipe. The self-suction pump has the advantages that the supplementing mechanism is arranged, water larger than the volume of the pump shell can be stored at a time, water flow can be continuously supplemented into the pump shell when the pump shell works, the subsequent self-suction effect cannot be affected even if part of water is thrown out, and therefore the self-suction efficiency of the self-suction pump and the stroke of a self-suction pipeline can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to self priming pump technical field, concretely is a kind of non-sealing self-priming pump with backwater device. BACKGROUND

[0002] Non-sealing self-control self-priming pump is used for the power equipment of conveying, it mainly relies on the action of pump itself, and water is sucked up. Pump chamber is provided with liquid storage chamber and gas-water separation chamber, and a certain amount of liquid is in pump shell (1) before pump operation. After pump starts, due to the rotating action of working impeller, air in inlet pipe is mixed with liquid in pump shell (1) and then discharged into gas-liquid separation chamber, air in gas-liquid separation chamber escapes from upper part, and liquid returns to impeller inlet from lower part, remaining air in inlet pipe is mixed again and continuously circulates until air in inlet pipe is discharged and self-priming is completed.

[0003] And in the prior art, such self-priming pump generally sets a backwater device, carries out gas-liquid separation, and the separated gas is discharged along the pipeline, and the liquid is returned to the pump shell to continue to participate in the exhaust pumping work, the purpose is to facilitate the work of the pump shell at the first time, the air in the pump shell can be continuously discharged, and the liquid reserved in the pump shell will not be thrown out, until the water inlet pipe sucks water source, and the liquid pumping work can be continuously carried out. But the backwater device in the prior art can return part of water when the air in the water inlet pipe of the pump shell is not completely discharged and sucked into the water source, but part of water will be thrown out, so that the water in the cavity of the pump shell becomes less and less, so that the self-priming height becomes low, and the self-priming speed also becomes low, and the use effect is poor when the water inlet pipe is long and high, so a non-sealing self-priming pump with backwater device needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a non-sealing self-priming pump with backwater device to solve the problems in the background art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: A kind of non-sealing self-priming pump with backwater device, including pump shell, the water inlet pipe is fixedly arranged on one side of the upper end of the pump shell, the impeller is movably arranged in the middle of the inner side of the pump shell by pivot, the liquid outlet is fixedly arranged in the middle of the upper end of the pump shell, the gas-liquid separation bin is fixedly arranged on the upper end of the liquid outlet, (the separation principle of gas-liquid separation bin is that, after gas-liquid mixture is thrown from narrow mouth by impeller and enters into larger gas-liquid separation bin, pressure drops sharply and flow rate reduces, but lighter gas continues to discharge upward constantly at this time, but liquid is heavier and returns to the inside of pump shell), the lower end of the pump shell is provided with a replenishing mechanism for supplementing water source to the inside of pump shell, and the replenishing mechanism includes connecting pipe, storage barrel, piston, electric push rod, the connecting pipe is fixedly arranged in the middle of the lower end of the pump shell, the storage barrel is fixedly arranged at the lower end of the connecting pipe, the piston is movably clamped on one side in the inside of the storage barrel, the electric push rod is fixedly arranged on the outside of the storage barrel, and the movable end of the electric push rod is fixedly connected with the piston.

[0006] Preferably, the gas-liquid separation bin is fixedly provided with a plurality of baffle plates on both sides inside, which can further prevent liquid from flowing out of the gas-liquid separation bin without affecting the exhaust effect, until the water inlet pipe can suck in water source, and the water source can be continuously supplied, then the water can be normally discharged.

[0007] Preferably, the gas-liquid separation bin is fixedly provided with a plurality of baffle plates on both sides inside, which can further prevent liquid from flowing out of the gas-liquid separation bin without affecting the exhaust effect, until the water inlet pipe can suck in water source, and the water source can be continuously supplied, then the water can be normally discharged.

[0008] Preferably, the pump shell is fixedly provided with an electric motor on one side of the surface, and the output shaft end of the electric motor is in driving connection with the pivot on which the impeller is located through a shaft coupling; the electric motor can drive the impeller to rotate.

[0009] Preferably, the pump shell is fixedly provided with a screw on one side of the surface, and the screw can be opened to prefill water into the inside of the pump shell and supplement water into the inside of the storage barrel according to needs.

[0010] Preferably, the electric motor is fixedly provided with a mounting seat at the lower end, and the mounting seat can facilitate the overall fixation and installation of the device at a target position.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The gas-liquid separation bin is also improved during use, and a baffle plate is added in the gas-liquid separation bin, which can further prevent liquid from flowing out of the gas-liquid separation bin without affecting the exhaust effect, until the water inlet pipe can suck in water source, and the water source can be continuously supplied, then the water can be normally discharged.

[0013] The gas-liquid separation bin is also improved, and a baffle plate is added in the gas-liquid separation bin, liquid can be further prevented from flowing out of the gas-liquid separation bin through the baffle plate, but the exhaust effect will not be affected, water can be sucked into the water inlet pipe, and water can be normally discharged when the water source can be continuously supplied. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a whole structure schematic view of the self-sealing and self-sucking pump with the water returning device;

[0015] Fig. 2 It is a side view of the self-sealing and self-sucking pump with the water returning device;

[0016] Fig. 3 It is a sectional view of the self-sealing and self-sucking pump with the water returning device.

[0017] 1, pump shell; 2, water inlet pipe; 3, liquid outlet; 4, gas-liquid separation bin; 5, connecting pipe; 6, storage barrel; 7, piston; 8, electric push rod; 9, baffle plate; 10, sealing cover; 11, motor; 12, screw; 13, mounting seat; 14, impeller. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Please refer to Figs. 1-3The utility model provides a technical scheme: a kind of without sealing self-priming pump with backwater device, including pump shell 1, the water inlet pipe 2 is fixedly arranged on the upper end one side of pump shell 1, the impeller 14 is movably arranged in the middle of the inner side of pump shell 1 by pivot, the liquid outlet 3 is fixedly arranged in the middle of the upper end of pump shell 1, the gas-liquid separation bin 4 is fixedly arranged on the upper end of liquid outlet 3, (the separation principle of gas-liquid separation bin 4 is that, after gas-liquid mixture is thrown from narrow mouth by impeller 14 and enters larger gas-liquid separation bin 4, pressure drops and flow rate reduces, but lighter gas continues to discharge upwards constantly at this time, but liquid is heavier and then backflow enters the inside of pump shell 1), the lower end of pump shell 1 is provided with the replenishing mechanism for supplementing water source to the inside of pump shell 1, and the replenishing mechanism includes connecting pipe 5, storage barrel 6, piston 7, electric push rod 8, the connecting pipe 5 is fixedly arranged in the middle of the lower end of pump shell 1, the storage barrel 6 is fixedly arranged in the lower end of connecting pipe 5, the piston 7 is movably clamped on the inside one side of storage barrel 6, and the electric push rod 8 is fixedly arranged on the outside of storage barrel 6.

[0020] The gas-liquid separation bin 4 is fixedly arranged with a plurality of baffle plates 9 on both sides in the inside, and the baffle plate 9 can further prevent liquid from flowing out of the gas-liquid separation bin, but will not affect the exhaust effect, so that water can be continuously absorbed in the water inlet pipe, and water can be normally discharged when the water source is continuously supplied.

[0021] The lower end one side of pump shell 1 is movably screwed with sealing cover 10, and the water stored in the inside of pump shell 1 can be discharged according to needs by opening sealing cover 10.

[0022] The electric motor 11 is fixedly arranged on one side of the surface of pump shell 1, and the output shaft end of electric motor 11 is in driving connection with the pivot where impeller 14 is located through a shaft coupling; impeller 14 can be driven to rotate by electric motor 11.

[0023] Screw 12 is arranged on one side of the surface of pump shell 1, and water can be injected into the inside of pump shell 1 in advance and supplemented into the inside of storage barrel 6 according to needs by opening screw 12.

[0024] The lower end of electric motor 11 is fixedly provided with mounting seat 13, and the device can be conveniently fixed and installed at a target position through mounting seat 13.

[0025] Working principle: when using the device, the device also increases storage barrel 6 relative to the conventional self-priming pump, so that the water output of pump shell 1 can be increased, and water with a volume greater than that of pump shell 1 can be stored at one time, so that water flow can be continuously supplied to the inside of pump shell 1 when pump shell 1 works, even if part of the water is thrown out, it will not affect the subsequent self-priming effect, so that the self-priming efficiency and self-priming pipeline stroke of the device can be increased.

[0026] And the device uses time gas-liquid separation bin 4 also carried out improvement, in gas-liquid separation bin 4 increased baffle 9, through baffle 9 can further prevent liquid from flowing out of gas-liquid separation bin, but will not affect the exhaust effect, until the water inlet pipe inside can absorb water source, water source can be unceasingly, then can normally carry out water, and the baffle of the device can be flexible material, when water source can be unceasingly, under the action of water pressure can push baffle upwards folding and close in gas-liquid separation bin inboard side wall, so that can not affect the normal water flow flow.

[0027] It should be noted that in this paper, such as first and second relationship terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0028] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A sealless self-priming pump with a return water device, comprising a pump casing (1), characterized in that: A water inlet pipe (2) is fixedly installed on one side of the upper end of the pump casing (1). An impeller (14) is movably installed in the middle of the inner side of the pump casing (1) via a rotating shaft. A liquid outlet (3) is fixedly installed in the middle of the upper end of the pump casing (1). A gas-liquid separation chamber (4) is fixedly installed at the upper end of the liquid outlet (3). A replenishment mechanism for replenishing water to the pump casing (1) is provided at the lower end of the pump casing (1). The replenishment mechanism includes a connecting pipe (5), a storage tank (6), a piston (7), and an electric push rod (8). A connecting pipe (5) is fixedly installed in the middle of the lower end of the pump casing (1). A storage tank (6) is fixedly installed at the lower end of the connecting pipe (5). A piston (7) is movably engaged on one side of the inside of the storage tank (6). An electric push rod (8) is fixedly installed on the outside of the storage tank (6). The movable end of the electric push rod (8) is fixedly connected to the piston (7).

2. A sealless self-priming pump with a return water device according to claim 1, characterized in that: Several baffles (9) are fixedly installed on both sides inside the gas-liquid separation chamber (4).

3. A sealless self-priming pump with a return water device according to claim 1, characterized in that: A sealing cap (10) is provided on one side of the lower end of the pump casing (1) by means of a threaded screw.

4. A sealless self-priming pump with a return water device according to claim 1, characterized in that: An electric motor (11) is fixedly installed on one side of the surface of the pump casing (1), and the output shaft end of the electric motor (11) is connected to the shaft of the impeller (14) via a coupling.

5. A sealless self-priming pump with a return water device according to claim 1, characterized in that: A screw (12) is provided on one side of the surface of the pump casing (1).

6. A sealless self-priming pump with a return water device according to claim 4, characterized in that: The lower end of the motor (11) is fixedly provided with a mounting base (13).

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