Injection pump structure convenient to assemble

Abstract

The utility model relates to a jet pump structure convenient to assemble, which comprises a pump motor, a pump body and an impeller, the impeller is mounted on an output shaft of the pump motor, a guide vane is mounted on the impeller, the pump body is mounted at one end of the pump motor provided with the output shaft, an outlet is arranged above the upper side of the pump body, and the guide vane is mounted on the pump body. An inlet is formed in the end face of the pump body, a throat pipe assembly is installed between the middle of the guide vane and the interior of the pump body, the throat pipe assembly comprises a butt joint pipe base body, an inlet and outlet cavity and a clamping protrusion, one end of the butt joint pipe base body is in butt joint with the middle of the guide vane, the inlet and outlet cavity is formed in the other end of the butt joint pipe base body, and the clamping protrusion is connected with the butt joint pipe base body. An upper connecting plug communicated with the inlet is arranged on the inlet and outlet cavity, and a lower connecting plug communicated with the outlet is arranged in the middle of the inlet and outlet cavity. The utility model has the characteristics that the production cost is reduced, the assembly steps are simplified, the assembly efficiency is improved, and the inner leakage phenomenon is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of jet pumps, in particular to a jet pump structure which is easy to assemble. Background Art

[0002] The JET pump is actually composed of two pumps, a centrifugal pump and a JET jet pump. The centrifugal pump is characterized by large flow rate and insufficient head. By combining it with the JET jet pump, the head is increased while sacrificing some flow rate to achieve a balance between head and flow rate. At the same time, a very important feature of the JET pump is its strong self-priming ability (actually up to 9 meters), which is very suitable for pumping water from wells, especially in the dry season when the water level in the well becomes shallow, it can play a good role.

[0003] However, this type of built-in JET injector has defects during production and installation: during installation, the water inlet of the injector and the water inlet of the pump body cannot be pressed in at one time, the injector will rotate around the central axis, causing the water inlet of the injector to easily shift during installation, and it needs to be adjusted and aligned before being pressed in, and there is no guide structure; if pressed in without correct alignment, there is a high probability that the sealing ring will be cut.

[0004] Under this installation condition, the JET pump will have internal leakage, affecting its performance. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a jet pump structure which is easy to assemble and has the characteristics of reducing production cost, simplifying assembly steps, improving assembly efficiency, avoiding internal leakage and the like.

[0006] The utility model solves the technical problem by adopting the following technical scheme: providing a micro pump syringe, comprising a pump motor, a pump body and an impeller, wherein the output shaft of the pump motor is provided with an impeller, the impeller is provided with a guide vane, the pump body is provided on one end of the output shaft of the pump motor, an outlet is provided above the upper side of the pump body, an inlet is provided on the end surface of the pump body, a throat assembly is provided between the middle of the guide vane and the inside of the pump body, the throat assembly comprises a butt-joint pipe base, an inlet and outlet cavity and a clamping protrusion, one end of the butt-joint pipe base is butted with the middle of the guide vane, the other end is provided with the inlet and outlet cavity, an upper plug connector connected with the inlet is provided on the inlet and outlet cavity, a lower plug connector connected with the outlet is provided at the middle of the inlet and outlet cavity, two clamping protrusions are symmetrically provided on both sides of the lower plug connector, a butt-joint boss is symmetrically provided in the pump body, and a clamping groove matching with the clamping boss is provided on the butt-joint boss.

[0007] In the technical solution, a separate throat assembly is provided to replace the original nozzle structure and throat structure, so that the structure is not easily offset during assembly, the assembly efficiency is improved, and the product quality is ensured. At the same time, a docking tube base is provided to dock with the middle part of the guide vane to ensure self-priming ability, and liquid transfer is achieved through the inlet and outlet cavities. At the same time, in order to facilitate the docking of the pump body and the throat assembly, the docking boss and the card groove are conveniently docked. The docking boss not only plays a positioning function, but also plays a guiding role in the assembly process.

[0008] As a supplement to the present technical solution, support extension brackets are arranged on the front and rear sides and the lower side of the butt joint tube base, and an upper extension bracket is arranged between the upper side of the butt joint tube base and the outer side of the inlet and outlet cavity.

[0009] In this technical solution, a supporting extension bracket is provided to improve the structural strength of the butt-joint pipe matrix, ensure that the butt-joint pipe matrix does not vibrate excessively, reduce noise, and at the same time, the upper extension bracket is used to support the inlet and outlet cavities.

[0010] As a supplement to the technical solution, a circle of sealing grooves is provided on the outer ring of one end where the butt-jointed tube base and the guide vane are butted, and a first sealing ring is installed in the sealing groove.

[0011] In the technical solution, a sealing groove is provided to facilitate the installation of the first sealing ring, and the first sealing ring is used to ensure the degree of sealing.

[0012] As a supplement to the present technical solution, a double-layer sealing ring is installed on the outer ring of the upper plug connector, and a plug hole matching the upper plug connector is provided on the pump body. By providing a double-layer sealing ring, the sealing degree of the upper plug connector is ensured.

[0013] As a supplement to the technical solution, a docking extension is arranged on one end of the output shaft of the pump motor, and a docking platform which fits the docking extension is arranged on the pump body.

[0014] As a supplement to the technical solution, dust covers are installed on the inlet and outlet.

[0015] As a supplement to the technical solution, a water injection plug is installed at the lower part of the pump body.

[0016] As a supplement to the technical solution, a mechanical seal that forms a seal with the middle part of the impeller is installed on the output shaft of the pump motor, and a locking nut that presses against the mechanical seal is installed on the output shaft of the pump motor.

[0017] Beneficial effects: The utility model relates to a jet pump structure which is easy to assemble. A separate throat assembly is provided to replace the original nozzle structure and throat structure, so that the structure is not easily offset during assembly, thereby improving assembly efficiency and ensuring product quality. At the same time, a docking tube base is provided to dock with the middle part of the guide vane to ensure self-priming ability, and liquid transfer is achieved through the inlet and outlet cavities. At the same time, in order to facilitate the docking of the pump body and the throat assembly, the docking boss and the card groove are conveniently docked. The docking boss not only plays a positioning function, but also plays a guiding role in the assembly process. It has the characteristics of reducing production costs, simplifying assembly steps, improving assembly efficiency, and avoiding internal leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an exploded structural view of the utility model;

[0019] Figure 2 It is the front view of the pump body described in the utility model;

[0020] Figure 3 This utility model Figure 2 Section view in the AA direction;

[0021] Figure 4 It is a front view of the throat assembly described in the utility model;

[0022] Figure 5 It is a structural view of the throat assembly described in the utility model.

[0023] Numbers in the figure: 1. Pump motor; 2. Impeller; 3. Guide vane; 4. Throat assembly; 5. Outlet; 6. Dust cover; 7. Inlet; 8. Pump body; 9. Docking extension; 10. Mechanical seal; 11. Locking nut; 12. Double-layer sealing ring; 13. Water injection plug; 14. First sealing ring; 15. Docking pipe base; 16. Lower plug joint; 17. Inlet and outlet cavity; 18. Upper plug joint; 19. Snap-in protrusion; 20. Sealing groove; 21. Support extension bracket; 22. Upper extension bracket; 23. Plug hole; 24. Docking boss; 25. Snap-in groove; 26. Docking platform. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0025] The embodiment of the utility model relates to a micro pump syringe, such as Figure 1As shown in FIG. 5 , the pump motor 1 comprises a pump body 8 and an impeller 2. The impeller 2 is mounted on the output shaft of the pump motor 1. The impeller 2 is mounted on a guide vane 3. The pump body 8 is mounted on one end of the output shaft of the pump motor 1. An outlet 5 is mounted on the upper side of the pump body 8. An inlet 7 is mounted on the end surface of the pump body 8. A throat assembly 4 is mounted between the middle of the guide vane 3 and the inside of the pump body 8. The throat assembly 4 comprises a butt-joint tube base 15, an inlet and outlet cavity 17 and a clamping protrusion 19. One end of the butt-jointed tube base 15 is butted against the middle of the guide vane 3, and an inlet and outlet cavity 17 is provided on the other end. An upper plug connector 18 communicating with the inlet 7 is provided on the inlet and outlet cavity 17, and a lower plug connector 16 communicating with the outlet 5 is provided at the middle of the inlet and outlet cavity 17. Two clamping protrusions 19 are symmetrically provided on both sides of the lower plug connector 16, and docking bosses 24 are symmetrically provided in the pump body 8, and a clamping groove 25 matching the clamping protrusion 19 is provided on the docking boss 24.

[0026] In the present technical solution, a separate throat assembly 4 is provided to replace the original nozzle structure and throat structure, so that the structure is not easily offset during assembly, the assembly efficiency is improved, and the product quality is ensured. At the same time, a docking tube base 15 is provided to dock with the middle part of the guide vane 3 to ensure the self-priming ability, and the liquid is transferred through the inlet and outlet cavities 17. At the same time, in order to facilitate the docking of the pump body 8 and the throat assembly 4, the docking boss 24 and the clamping groove 25 are conveniently docked. The docking boss 24 not only plays a positioning function, but also plays a guiding role in the assembly process.

[0027] As a supplement to the present technical solution, support extension brackets 21 are provided on the front, rear and lower sides of the butt joint tube base 15 , and an upper extension bracket 22 is provided between the upper side of the butt joint tube base 15 and the outer side of the inlet and outlet cavity 17 .

[0028] In the present technical solution, a supporting extension bracket 21 is provided to improve the structural strength of the butt-joint pipe base 15, to ensure that the butt-joint pipe base 15 does not vibrate excessively and to reduce noise. At the same time, an upper extension bracket 22 is used to support the inlet and outlet cavity 17.

[0029] As a supplement to the present technical solution, a circle of sealing grooves 20 are provided on the outer ring of one end where the butt-jointed tube base 15 and the guide vane 3 are butted against each other, and a first sealing ring 14 is installed in the sealing groove 20 .

[0030] In the present technical solution, the sealing groove 20 is provided to facilitate the installation of the first sealing ring 14, and the first sealing ring 14 is used to ensure the sealing degree.

[0031] As a supplement to the present technical solution, a double-layer sealing ring 12 is installed on the outer ring of the upper plug connector 18, and a plug hole 23 matching the upper plug connector 18 is provided on the pump body 8. By providing the double-layer sealing ring 12, the sealing degree of the upper plug connector 18 is ensured.

[0032] As a supplement to the present technical solution, a docking extension 9 is provided on one end of the output shaft of the pump motor 1 , and a docking platform 26 which is in contact with the docking extension 9 is provided on the pump body 8 .

[0033] As a supplement to the present technical solution, dust covers 6 are installed on the inlet 7 and the outlet 5 .

[0034] As a supplement to the present technical solution, a water injection screw plug 13 is installed at the lower part of the pump body 8.

[0035] As a supplement to the present technical solution, a mechanical seal 10 is installed on the output shaft of the pump motor 1 to form a seal with the middle of the impeller 2 , and a locking nut 11 is installed on the output shaft of the pump motor 1 to resist the mechanical seal 10 .

[0036] The above is a detailed introduction to a jet pump structure that is easy to assemble provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A jet pump structure that is easy to assemble, characterized in that: The pump comprises a pump motor (1), a pump body (8) and an impeller (2), wherein the impeller (2) is mounted on the output shaft of the pump motor (1), the impeller (2) is mounted on a guide vane (3), the pump body (8) is mounted on one end of the output shaft of the pump motor (1), an outlet (5) is arranged above the upper side of the pump body (8), an inlet (7) is arranged on the end surface of the pump body (8), a throat assembly (4) is mounted between the middle of the guide vane (3) and the inside of the pump body (8), the throat assembly (4) comprises a butt-joint tube base (15), an inlet and outlet cavity (17) and a clamping protrusion (19), One end of the butt-jointed tube base (15) is butted against the middle of the guide vane (3), and the other end is provided with an inlet and outlet cavity (17). The inlet and outlet cavity (17) is provided with an upper plug joint (18) connected to the inlet (7). The middle of the inlet and outlet cavity (17) is provided with a lower plug joint (16) connected to the outlet (5). Two clamping protrusions (19) are symmetrically provided on both sides of the lower plug joint (16). The pump body (8) is symmetrically provided with butt-jointed bosses (24), and the butt-jointed bosses (24) are provided with clamping grooves (25) matching the clamping protrusions (19).

2. The jet pump structure that is easy to assemble according to claim 1 is characterized in that: Support extension brackets (21) are arranged on the front, rear and lower sides of the butt-joint tube base (15), and an upper extension bracket (22) is arranged between the upper side of the butt-joint tube base (15) and the outer side of the inlet and outlet cavity (17).

3. The jet pump structure that is easy to assemble according to claim 1 is characterized in that: A sealing groove (20) is arranged on the outer ring of one end where the butt-jointed pipe base (15) and the guide vane (3) are butt-jointed, and a first sealing ring (14) is installed in the sealing groove (20).

4. The jet pump structure that is easy to assemble according to claim 1 is characterized in that: A double-layer sealing ring (12) is installed on the outer ring of the upper plug connector (18), and a plug hole (23) matching the upper plug connector (18) is provided on the pump body (8).

5. The jet pump structure that is easy to assemble according to claim 1 is characterized in that: The pump motor (1) is provided with a docking extension (9) on one end of the output shaft, and the pump body (8) is provided with a docking platform (26) that fits the docking extension (9).

6. The jet pump structure that is easy to assemble according to claim 1, characterized in that: The inlet (7) and the outlet (5) are both provided with dust covers (6).

7. The jet pump structure that is easy to assemble according to claim 1 is characterized in that: A water injection screw plug (13) is installed at the lower part of the pump body (8).

8. The jet pump structure that is easy to assemble according to claim 1 is characterized in that: The output shaft of the pump motor (1) is provided with a mechanical seal (10) which forms a seal with the middle part of the impeller (2), and the output shaft of the pump motor (1) is provided with a locking nut (11) which abuts against the mechanical seal (10).

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