Novel self-priming pump

Abstract

The utility model belongs to the technical field of self-priming pumps, and particularly relates to a novel self-priming pump which comprises a pump body, a connecting frame is installed on the rear side face of the pump body, a first connecting part used for being connected with the pump body and a second connecting part used for being connected with a motor are formed at the two ends of the connecting frame respectively, and a plurality of second connecting lugs are formed on the periphery of the second connecting part. A plurality of first connecting lugs are formed on the periphery of the first connecting part, first fixing holes are formed in the first connecting lugs, the first fixing holes and the second fixing holes are formed in a staggered mode, and mounting notches are formed in the periphery of the first connecting part and located in the same horizontal position as the second fixing holes. Due to the design of the installation notch, in the actual installation process, after a screw is inserted into the second fixing hole, due to the design of the installation notch, the screw can be vertically screwed into the screw hole through a screw gun, installation of a screw gun head and the screw cannot be interfered, and installation operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of self-priming pumps, in particular to a novel self-priming pump. Background Art

[0002] Centrifugal pumps are generally composed of motors, pump bodies, pump shafts and impellers, and are widely used in inter-basin water transfer, farmland irrigation, production water supply and drainage, and other fields.

[0003] For example, the Chinese utility model, patent number CN201320026257.5, discloses a small centrifugal water pump, including a motor and a pump body, the motor and the pump body are connected by a connecting frame, the output shaft of the motor is inserted into the pump body, and an impeller is installed at the end of the output shaft of the motor, and the impeller is a one-time injection molded structure.

[0004] The existing pump body and motor are connected and fixed by a connecting frame, but due to certain interference between the structures of the two, the installation operation is inconvenient, so the structure needs to be further improved. Utility Model Content

[0005] The utility model aims to provide a novel self-priming pump, which solves the problem of interference during the installation process by providing an installation gap.

[0006] The purpose of the utility model is achieved as follows: a new self-priming pump, comprising a pump body, a water outlet formed on the upper end of the pump body, a water inlet formed on the front side of the pump body, a connecting frame installed on the rear side of the pump body, and a connecting portion 1 for connecting the pump body and a connecting portion 2 for connecting the motor respectively formed at both ends of the connecting frame, a plurality of connecting ears 2 are formed on the outer periphery of the connecting portion 2, a fixing hole 2 is opened in the connecting ear 2, a plurality of connecting ears 1 are formed on the outer periphery of the connecting portion 1, a fixing hole 1 is opened in the connecting ear 1, the fixing hole 1 and the fixing hole 2 are staggered, and a mounting notch is opened on the outer periphery of the connecting portion 1, and the mounting notch and the fixing hole 2 are located at the same horizontal position.

[0007] Preferably, a fixing portion is formed on the outer periphery of the rear side of the pump body, and a fixing hole three is opened in the fixing portion.

[0008] Preferably, a water outlet is formed at the lower end of the pump body, and the water outlet is located obliquely below the pump body.

[0009] Preferably, a mounting seat for the motor shaft to pass through is formed in the connecting frame, and an oil seal is formed on the inner periphery of the mounting seat, and the oil seal is located at one end close to the motor.

[0010] Preferably, an impeller is provided in the pump body, a connecting hole for connecting to the motor shaft is opened in the impeller, and a circular reinforcement portion is formed on the side of the impeller, which is located on the outer periphery of the connecting hole and on the side close to the motor.

[0011] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0012] The utility model adopts the design of the installation notch, so that during the actual installation process, after the screw is inserted into the second fixing hole, due to the design of the installation notch, a screw gun can be used to vertically screw the screw into the screw hole without interfering with the screw gun head and the installation of the screw, and the installation operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 .

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 .

[0015] Figure 3 It is a structural diagram when the pump body and the connecting frame are separated.

[0016] Reference numerals: 1- pump body; 2- water outlet; 3- water inlet; 4- connecting frame; 5- connecting part 1; 6- connecting part 2; 7- connecting ear 2; 8- fixing hole 2; 9- connecting ear 1; 10- fixing hole 1;

[0017] 11-Installation notch; 12-Fixed part; 13-Fixed hole three; 14-Drain port; 15-Mounting seat; 16-Oil seal position; 17-Impeller; 18-Connecting hole; 19-Circular reinforcement part. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1-3 As shown, a new type of self-priming pump includes a pump body 1, a water outlet 2 is formed at the upper end of the pump body 1, a water inlet 3 is formed on the front side of the pump body 1, a connecting frame 4 is installed on the rear side of the pump body 1, and both ends of the connecting frame 4 are respectively formed with a connecting part 1 5 for connecting the pump body 1 and a connecting part 2 6 for connecting the motor. The pump body 1 is fixedly connected to the motor through the connecting frame 4, and a plurality of connecting ears 2 7 are formed on the outer periphery of the connecting part 2 6, and a fixing hole 2 8 is opened in the connecting ear 2 7. The outer periphery of the connecting part 1 5 is formed with a plurality of connecting ears 1 9, and a fixing hole 10 is opened in the connecting ear 1 9. The fixing hole 10 and the fixing hole 2 8 are staggered. The outer periphery of the connecting part 1 5 is provided with an installation notch 11, and the installation notch 11 and the fixing hole 2 8 are located at the same horizontal position.

[0020] Since the diameter of the connecting portion 1 5 is larger than the diameter of the connecting portion 2 6 , when installing the screw in the fixing hole 2 8 , the fixing hole 2 8 of the connecting ear 2 7 is blocked by the connecting portion 1 5 , and the screw gun head needs to be inserted at an angle to tighten the screw. At this time, the screw gun head and the screw hole are in an inclined state, and it is easy to slip during the rotation process. Sometimes manual tools need to be used for installation, which makes the installation very inconvenient.

[0021] The utility model is designed with the installation notch 11, so that during the actual installation process, after the screw is inserted into the fixing hole 8, due to the design of the installation notch 11, a screw gun can be used to vertically screw the screw into the screw hole without interfering with the screw gun head and the installation of the screw, and the installation operation is convenient.

[0022] A fixing portion 12 is formed on the outer periphery of the rear side of the pump body 1, and a fixing hole 3 13 is opened in the fixing portion 12. During the actual installation process, the fixed connection between the connecting frame 4 and the pump body 1 is achieved by installing bolts into the fixing hole 10 and the fixing hole 3 13.

[0023] The lower end of the pump body 1 is formed with a drain port 14. This technical solution positions the drain port 14 obliquely below the pump body 1 so that when the self-priming pump is placed on a flat surface for use, the protruding drain port at the lower end will not interfere with the ground or other components.

[0024] Combine Figure 2 and Figure 3 The connecting frame 4 is formed with a mounting seat 15 through which the motor shaft passes. The inner periphery of the mounting seat 15 is formed with an oil seal position 16. The oil seal position 16 is located at one end close to the motor, thereby further improving the sealing between the components and preventing leakage.

[0025] Look specifically Figure 3 An impeller 17 is provided in the pump body 1, and a connecting hole 18 for connecting to the motor shaft is opened in the impeller 17. A circular reinforcement portion 19 is formed on the side of the impeller 17. The circular reinforcement portion 19 is located on the outer periphery of the connecting hole 18 and on the side close to the motor, thereby improving the strength of the impeller 17, making it less prone to damage, and extending its service life.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A new self-priming pump, characterized in that: The invention comprises a pump body (1), wherein the upper end of the pump body (1) is formed with a water outlet (2), the front side of the pump body (1) is formed with a water inlet (3), the rear side of the pump body (1) is installed with a connecting frame (4), the two ends of the connecting frame (4) are respectively formed with a connecting part (5) for connecting the pump body (1) and a connecting part (6) for connecting the motor, the outer periphery of the connecting part (6) is formed with a plurality of connecting ears (7), the connecting ears (7) are provided with a fixing hole (8), the outer periphery of the connecting part (5) is formed with a plurality of connecting ears (9), the connecting ears (9) are provided with a fixing hole (10), the fixing hole (10) and the fixing hole (8) are arranged in an alternating manner, the outer periphery of the connecting part (5) is provided with an installation notch (11), and the installation notch (11) and the fixing hole (8) are located at the same horizontal position.

2. The novel self-priming pump according to claim 1 is characterized in that: A fixing portion (12) is formed on the outer periphery of the rear side of the pump body (1), and a fixing hole (13) is provided in the fixing portion (12).

3. The novel self-priming pump according to claim 1 or 2, characterized in that: A water outlet (14) is formed at the lower end of the pump body (1), and the water outlet (14) is located obliquely below the pump body (1).

4. The novel self-priming pump according to claim 1 is characterized in that: A mounting seat (15) through which the motor shaft passes is formed in the connecting frame (4), and an oil seal position (16) is formed on the inner periphery of the mounting seat (15). The oil seal position (16) is located at one end close to the motor.

5. The novel self-priming pump according to claim 1 is characterized in that: An impeller (17) is provided in the pump body (1), a connecting hole (18) for connecting to a motor shaft is provided in the impeller (17), a circular reinforcement portion (19) is formed on the side of the impeller (17), and the circular reinforcement portion (19) is located on the outer periphery of the connecting hole (18) and on a side close to the motor.

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