A self-priming pump device

Abstract

This invention discloses a self-priming pump device in the field of self-priming pump technology, including a water inlet device, a self-priming device, and a water outlet device. The water inlet device consists of an inlet pipe and a filter device installed on the pipe, with a three-way connector installed at the end of the inlet pipe. The self-priming device includes an impeller, a first housing, a second housing, and a motor. The first housing has a first opening and a second opening on its side. The impeller is installed inside the second housing, and the impeller shaft of the motor is installed inside the first housing. The first housing and the second housing are eccentrically arranged. A pressure difference is formed by compressed air, causing the impeller to rotate. Self-priming is achieved through centrifugal force and thrust. This invention designs the first housing and the second housing to be eccentrically arranged, with the bearing seats and bearing holes offset from the center, and the length and width of each fan of the impeller are different. This allows it to generate stronger centrifugal force and thrust on liquids or gases during operation, directly achieving water pumping, which can be achieved simply by driving the motor.

Description

Technical Field

[0001] This invention relates to the field of self-priming pump technology, specifically to a self-priming pump device. Background Technology

[0002] The working principle of a self-priming pump is that the pump body is filled with water before starting, or the pump casing itself contains water. After starting, the impeller rotates at high speed, causing the water in the impeller channels to flow to the outlet, separating the air in the liquid to achieve self-priming. Current self-priming pumps usually still require external compressed air or other power media, and the internal resistance of the self-priming pumps used is relatively large, resulting in significant energy loss. Therefore, this invention designs a self-priming pump device to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a self-priming pump device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a self-priming pump device, comprising a water inlet device, a self-priming device, and a water outlet device;

[0005] The water inlet device consists of an inlet pipe and a filter device installed on the pipe, with a three-way connector installed at the end of the inlet pipe.

[0006] The self-priming device includes an impeller, a first cover, a second cover, and a motor. The first cover has a first opening and a second opening on its side. The impeller is installed inside the second cover, and the impeller shaft of the motor is installed inside the first cover. The first cover and the second cover are eccentrically arranged. A pressure difference is formed by compressed air, and the impeller rotates. Self-priming is achieved through centrifugal force and thrust.

[0007] The water outlet device consists of a tank, a water guide pipe, a drain pipe, and an exhaust pipe. One outlet of the three-way connector is connected to the second opening, and the other outlet is connected to the side interface of the tank. The upper end face of the tank has two openings, and each opening has a tubular extension inside the tank. The drain pipe and the exhaust pipe are installed in the two openings respectively, and the tubular extension of the drain pipe on one side is longer than the extension of the exhaust pipe on the other side. The water guide pipe is inserted into the lower end face of the tank. One end of the water guide pipe extends out of the tank and inserts into the first opening on the first cover, and the other end extends into the tank higher than the extension of the two openings. The water pumped out by the self-priming device flows into the tank through the water guide pipe.

[0008] Preferably, the first cover and the second cover are disc structures.

[0009] Preferably, the second housing has a bearing seat inside, and the first housing has a bearing hole inside. The bearing seat can be installed into the bearing hole, and the bearing seat and the bearing hole are off-center.

[0010] Preferably, the impeller shaft is fixedly installed at the top of the motor shaft by a fixing block, the end of the impeller shaft extends out of the first housing bearing hole and inserts into the second housing bearing seat, and the impeller shaft is fixedly installed by the impeller fixing groove and the rolling bearing disposed inside the impeller fixing groove.

[0011] Preferably, a waterproof gasket is provided at the bearing housing of the second housing.

[0012] Preferably, a sealing gasket is provided at the bearing hole of the first housing.

[0013] Preferably, the length and width of each impeller fan are different.

[0014] Preferably, the housing is a sealed cylindrical structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are: by designing the first cover and the second cover to be eccentrically arranged, with the bearing seat and bearing hole on them offset from the center, and the length and width of each fan of the impeller being different, the present invention generates stronger centrifugal force and thrust on the liquid or gas during operation, directly realizing water pumping. It can be achieved by only needing a motor to drive it, without the need for other external compressed air or other power media. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a combined front view, side view, and left view of the present invention;

[0018] Figure 2 This is a schematic diagram of the eccentric structure of the upper bearing seat and bearing hole inside the first and second covers of the present invention.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1-Impeller, 2-First casing, 3-Second casing, 4-Impeller shaft, 5-Waterproof pad, 6-Fixing block, 7-First opening, 8-Second opening, 9-Rolling bearing, 10-Box, 11-Impeller fixing groove, 12-Motor, 13-Sealing ring, 14-Inlet pipe, 15-Filter device, 16-Three-way connector, 17-Outlet. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-2 The present invention provides a technical solution: The self-priming pump device designed by the present invention consists of a water inlet device, a self-priming device, and a water outlet device. The water inlet device consists of a water inlet pipe 14 and a filter device 15 installed on the pipe. A three-way connector 16 is installed at the end of the water inlet pipe 14. One outlet of the three-way connector 16 is connected to the second opening 8, and the other outlet is connected to the side interface of the housing 10.

[0023] The self-priming device includes a first housing 2, a second housing 3, an impeller 1, and a motor 12. The first housing 2 and the second housing 3 are disc structures. The second housing 3 has a bearing seat inside, and the first housing 2 has a bearing hole inside. The first housing 2 has a first opening 7 and a second opening 8 on its side. The top of the motor 12 shaft is fixedly mounted with an impeller shaft 4 by a fixing block 6. The end of the impeller shaft 4 extends out of the bearing hole of the first housing 2 and is inserted into the bearing seat of the second housing 3. The impeller shaft 4 is fixedly mounted with the impeller 1 by an impeller fixing groove 11 and a rolling bearing 9 set inside the impeller fixing groove 11. The impeller 1 is installed inside the second housing 3. A sealing gasket 13 is provided at the bearing hole of the first housing 2, and a waterproof gasket 5 is provided at the bearing seat of the second housing 3.

[0024] Combined with appendix Figure 2 As can be seen, the first casing 2 and the second casing 3 are eccentrically arranged, with the bearing seats and bearing holes on them offset from the center. The length and width of each fan of the impeller 1 are not the same. This arrangement enables it to generate stronger centrifugal force and thrust on the liquid or gas during operation. Combined with the eccentric structure of the bearing seats and bearing holes on the casing, there is no need to form a pressure difference through compressed air. This invention only needs to drive the impeller 1 to rotate through the motor 12, and it can achieve self-priming through the action of centrifugal force and thrust.

[0025] The water outlet device consists of a housing 10, a water guide pipe, a drain pipe, and an exhaust pipe. The housing 10 is a sealed cylindrical structure with two openings on the upper end face. Each opening has a tubular extension inside the housing 10. The drain pipe and exhaust pipe are installed in the two openings respectively. The tubular extension of the drain pipe on one side is longer than the extension of the exhaust pipe on the other side. The water guide pipe is inserted into the lower end face. One end of the water guide pipe extends out of the housing 10 and is inserted into the first opening 7 on the first cover 2. The other end extends into the housing 10, higher than the extensions of the two openings. With this configuration, the water pumped by the self-priming device flows into the housing 10 through the water guide pipe. When the water level inside the housing 10 is higher than the extension of the drain pipe opening but lower than the extension of the exhaust pipe opening, the water volume inside the housing 10 reaches equilibrium. Under the action of water pressure, the water is discharged from the drain pipe. When the self-priming device discharges gas through the water guide pipe, the gas is discharged from the exhaust pipe because the water level is lower than the extension of the exhaust pipe opening.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A self-priming pump apparatus, characterized by: The water inlet device, the self-priming device and the water outlet device are provided. The water inlet device is composed of a water inlet pipe (14) and a filter device (15) arranged on the pipe, and a three-way joint (16) is arranged at the end of the water inlet pipe (14). The self-priming device comprises an impeller (1), a first cover (2), a second cover (3) and a motor (12), the first cover (2) is provided with a first opening (7) and a second opening (8) on the side, the impeller (1) is arranged in the second cover (3), and the impeller shaft (4) of the motor (12) is arranged in the first cover (2), wherein the first cover (2) is arranged eccentrically with the second cover (3), a pressure difference is formed by compressed air, the impeller (1) rotates, and self-priming is completed by the centrifugal force and the thrust. The water outlet device is composed of a box body (10), a water guide pipe, a drain pipe and an exhaust pipe, one outlet of the three-way joint (16) is connected with the second opening (8), the other outlet is connected with the side interface of the box body (10), two openings are arranged on the upper end surface of the box body (10), tubular extensions are arranged in the two openings in the box body (10) respectively, the drain pipe and the exhaust pipe are arranged in the two openings respectively, the tubular extension on one side of the drain pipe is longer than the tubular extension on one side of the exhaust pipe, the water guide pipe is inserted into the box body (10) from the lower end surface of the box body (10), one end of the water guide pipe extends out of the box body (10) and is inserted into the first opening (7) of the first cover (2), the other end of the water guide pipe extends into the box body (10) and is higher than the extensions of the two openings in the box body (10), and the water pumped out by the self-priming device flows into the box body (10) through the water guide pipe. The length and width of each fan surface of the impeller (1) are different.

2. A self-priming pump apparatus according to claim 1, wherein: The first cover (2) and the second cover (3) are disc structures.

3. A self-priming pump apparatus according to claim 1, wherein: A bearing seat is arranged in the second cover (3), a bearing hole is arranged in the first cover (2), the bearing seat can be inserted into the bearing hole, and the bearing seat and the bearing hole are offset from the center.

4. A self-priming pump apparatus according to claim 2, wherein: The top of the shaft of the motor (12) is fixedly connected with the impeller shaft (4) through a fixing block (6), one end of the impeller shaft (4) extends out of the bearing hole of the first cover (2) and is inserted into the bearing seat of the second cover (3), and the impeller shaft (4) is fixedly connected with the impeller (1) through an impeller fixing groove (11) and a rolling bearing (9) arranged in the impeller fixing groove (11).

5. A self-priming pump apparatus according to claim 3, wherein: A waterproof pad (5) is arranged at the bearing seat of the second cover (3).

6. A self-priming pump apparatus according to claim 3, wherein: A sealing pad (13) is arranged at the bearing hole of the first cover (2).

7. A self-priming pump apparatus according to claim 1, wherein: The box body (10) is a sealed cylindrical structure.

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