CN217107456U

CN217107456U - Water pump front cover structure

Info

Publication number: CN217107456U
Application number: CN202122562355.8U
Authority: CN
Inventors: 颜成刚; 林荣; 金士海
Original assignee: Leo Group Zhejiang Pump Co Ltd
Current assignee: Leo Group Zhejiang Pump Co Ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-08-02
Anticipated expiration: 2031-10-22

Abstract

The utility model discloses a water pump protecgulum structure, including interconnect's preceding disk body and front end body, the internal rivers import that is equipped with of front end is equipped with the inner chamber of loudspeaker form in the preceding disk body, and the inner chamber includes the less little tip in cross-section and the great big tip in cross-section, and little tip and front end body coupling are equipped with the extension oral siphon that sets up towards the inside of preceding disk body on the front end body, and the extension oral siphon can cooperate with the last inlet opening of water pump impeller. The utility model has the advantages that the water pump impeller has a close fitting surface with the water inlet of the water pump impeller, thereby preventing the backflow and improving the lift; and the water inlet of the water pump impeller is provided with a tight matching surface, so that the backflow condition is prevented, and the lift is improved.

Description

Water pump front cover structure

Technical Field

The application relates to a water pump end cover technical field especially relates to a water pump protecgulum structure.

Background

The pump body of the canned motor pump is connected with the motor, and the rotor of the motor and the impeller of the pump body are fixed on the same rotating shaft. The front end cover is usually arranged outside the impeller, and when the front end cover is assembled with the pump shell to lock the screw, the screw column of the front end cover is locked and damaged in the manufacturing process of the water pump, so that the labor and materials are wasted, and the expense of a factory is increased.

For example, chinese patent document, the patent No. CN 2019201793225 issued on 11/22/2019, the application discloses a pump head structure of a water pump and a water pump using the same, which includes a pump housing, a rotating shaft, a water pump impeller, a front end cap and a bearing, wherein the pump housing includes a water inlet at the top, a pump cavity and a water outlet, the water inlet and the water outlet are communicated with the pump cavity, a first upper flange is protruded at a joint of the outer side of the bottom of the pump housing and the front end cap, a first lower flange is protruded at the outer side of the top of the front end cap, the first upper flange and the first lower flange are mounted and connected by a plurality of first screws, a bearing seat is disposed in the middle of the bottom surface of the front end cap, the bearing is mounted inside the bearing seat, a through hole for the rotating shaft to pass through is disposed in the middle of the front end cap, the end of the rotating shaft is mechanically connected with the water pump impeller located inside the pump cavity, and a sealing device is arranged in the through hole. The disadvantages are that: 1. the front end cover is connected with the first upper flange on the pump shell through the first lower flange at the outer end by screws, so that the mounting cost is high, the production cost of the flange is high, the occupied space of the flange is large, and the pump body is easy to leak; 2. the outer end of the water inlet hole in the water pump impeller is abutted to the wall surface of the front end cover, the contact area between the front end cover and the water inlet hole is small, the backflow condition is easy to occur, and the lift is small.

Disclosure of Invention

Based on the above-mentioned not enough among the prior art, the utility model provides a water pump protecgulum structure has inseparable fitting surface with water pump impeller's water inlet, prevents the condition of backflowing, improves the lift.

The utility model discloses a another purpose has inseparable fitting surface with water pump impeller's water inlet, prevents the condition of backflowing, improves the lift.

In order to achieve the above object, the present invention adopts the following technical solutions.

The utility model provides a water pump protecgulum structure, includes interconnect's preceding disk body and front end body, and the internal rivers import that is equipped with of front end is equipped with the inner chamber of loudspeaker form in the preceding disk body, and the inner chamber includes the less little tip in cross-section and the great big tip in cross-section, and little tip and front end body coupling are equipped with the extension oral siphon that sets up towards the inside of preceding disk body on the front end body, and the extension oral siphon can cooperate with the inlet opening on the water pump impeller. Extension mouthful pipe and inlet opening cooperation form the circular side contact that is different from prior art end face contact, and the fitting surface is inseparabler, and rivers are difficult to appear the condition of backflowing from the entering into inlet opening that extension mouthful pipe can be smooth-going, have improved the lift.

Preferably, the extension pipe is in the shape of a circular ring, the outer diameter of the extension pipe is smaller than the diameter of the water inlet hole, and the extension pipe extends into the water inlet hole. The extension opening pipe and the water inlet hole form an inner opening ring structure. The inner orifice ring structure has the effects of reducing the caliber, improving the lift and preventing backflow.

Preferably, the periphery of the front disk body is provided with an external thread used for connecting a water pump cylinder, and the outer end of the front disk body is provided with a positioning ring abutted to the end part of the water pump cylinder. The front end cover and the water pump cylinder are fixedly connected through the external threads, so that the connection is convenient, the assembly time of the front end cover and the water pump cylinder is shortened, and the assembly cost is reduced; the positioning ring is abutted with the water pump barrel, and not only can be used for positioning the screw thread in place, but also can be used as a clamping leakage-proof structure.

Preferably, a sealing ring is arranged on the periphery of the front disc body between the positioning ring and the external thread. The reliability of the connection of the front end cover and the water pump barrel is improved through the sealing ring, after the front disk body and the water pump barrel are in threaded connection in place, the positioning ring can limit and press the sealing ring to deform and seal, and the sealing effect is reliable.

Preferably, the front end body is internally provided with a connecting threaded hole, the tail end of the connecting threaded hole is provided with a positioning shoulder protruding towards the axis of the front end body, and the extension opening pipe is arranged on the positioning shoulder. Through inside connecting screw hole, outside pipeline or outside horn mouth can be connected to the front end body, and outside pipeline or outside horn mouth butt are shouldered in the location for the front end housing has the connection function that expands outward, keeps front end housing inner structure stability, can dismantle and set up the replacement, improves the internal side's of front end stand wear and tear and corrosion-resistant ability.

Preferably, the outer side of the front cover structure is provided with connecting threads, the front cover structure is connected with a fixed cover through the connecting threads, the outer end of the front disk body is provided with a front shell, and the front shell is tightly installed on the outer side of the front end of the water pump barrel through the fixed cover. The front shell is tightly pressed and connected through the fixed cover matched with the connecting threads, the front shell and the front disk body form clamping for the water pump barrel, and the connection stability of the front end cover and the water pump barrel is improved.

Preferably, the outer end of the large end part of the front disc body is provided with a connecting ring, the connecting ring is internally provided with a mounting groove matched with the impeller, and the sealing ring, the positioning ring and the external thread are positioned at the outer end of the connecting ring. The connecting ring provides a large mounting surface, so that the arrangement of the sealing ring, the positioning ring and the external thread is convenient, and the connection stability of the front disk body and the water pump barrel is improved.

The utility model discloses following beneficial effect has: the water pump impeller and the water inlet of the water pump impeller are provided with a tight matching surface, so that the backflow situation is prevented, and the lift is improved; the front end cover and the water pump cylinder are convenient to connect, the assembly cost is reduced, and the sealing performance is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic structural diagram of the front housing to which the present invention is connected.

In the figure: the front end body 2 of the front disk body 1 is connected with the inner cavity 4 of the threaded hole 3, the water inlet hole 7 of the water pump impeller 6 of the water pump impeller 5 is externally threaded, the positioning ring 9 is externally threaded, the sealing ring 10 is connected with the mounting groove 11, the positioning shoulder 13 is connected with the threads 14, the cover 15 is fixed, and the front shell 16 and the convex ring 17 are connected with the water pump barrel 18 through the threads 18.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the embodiment of the method, the first step,

as shown in fig. 1 to 3, a front cover structure of a water pump comprises a front disk body 1 and a front end body 2 which are connected with each other, wherein the front disk body 1 and the front end body 2 are integrally formed and welded into a whole. The front end body 2 is cylindrical and annular in shape. Be equipped with the rivers import in the front end body 2, be equipped with connecting thread 14 hole 3 in the front end body 2, namely connecting thread 14 hole 3 sets up on the wall of front end body 2 promptly, and the rivers import sets up pipeline or horn mouth automatic molding behind connecting thread 14 hole 3. Be equipped with the outside in the front disk body 1 and be the inner chamber 4 of loudspeaker form, inner chamber 4 includes the less little tip in cross-section and the great big tip in cross-section, and little tip is connected with front end body 2, is equipped with the extension oral siphon 5 towards the inside setting of front disk body 1 on the front end body 2, and extension oral siphon 5 can cooperate with inlet opening 7 on the water pump impeller 6. The extension opening pipe 5 is in a cylindrical ring shape, the outer diameter of the extension opening pipe 5 is smaller than the diameter of the water inlet hole 7, and the extension opening pipe 5 extends into the water inlet hole 7. The periphery of the front disc body 1 is provided with an external thread 8 used for connecting a water pump cylinder 18, and the outer end of the front disc body 1 is provided with a positioning ring 9 abutted against the end part of the water pump cylinder 18. The periphery of the front disk body 1 is provided with a sealing ring 10 between the positioning ring 9 and the external thread 8. The outer end of the large end part of the front disc body 1 is provided with a connecting ring 11, a mounting groove 12 matched with the impeller is arranged in the connecting ring 11, and the sealing ring 10, the positioning ring 9 and the external thread 8 are positioned on the outer end ring surface of the connecting ring 11. The tail end of the hole 3 of the connecting thread 14 is provided with a positioning shoulder 13 which is convexly arranged towards the axis of the front end body 2, and the extension mouth pipe 5 is arranged on the positioning shoulder 13. The outer side of the front cover structure is provided with a connecting thread 14, and the connecting thread 14 corresponds to the outer side of the junction position of the front end body 2 and the front disk body 1. The protecgulum structure passes through connecting thread 14 and connects a fixed lid 15, and fixed lid 15 is the annular structure, and fixed lid 15 is equipped with the step face towards the right side of protecgulum body 1, and the outer end of protecgulum body 1 is equipped with preceding shell 16, is equipped with the protruding ring 17 that the cooperation was fixed to the protruding setting of the interior of 15 step faces of lid on the preceding shell 16, and the periphery of protecgulum body 1 is the annular, and the periphery cover of protecgulum body 1 is established in the outside of water pump barrel 18. The front shell 16 is tightly mounted outside the front end of the water pump cylinder 18 through the fixing cover 15.

The utility model discloses in, extension pipe 5 and the cooperation of inlet opening 7 form the circular side contact that is different from prior art end face contact, and extension pipe 5 stretches into inside 7 inlet openings, and extension pipe 5's lateral surface laminating inlet opening 7's medial surface, both fitting surfaces are inseparabler, and rivers are followed extension pipe 5 can smooth-going entering into inlet opening 7, and such internal orifice ring structure has the effect of reducing the bore, improving the lift and preventing the refluence. The front end cover and the water pump cylinder 18 are fixedly connected through the external threads 8, so that the connection is convenient, the assembly time of the front end cover and the water pump cylinder 18 is shortened, and the assembly cost is reduced; the positioning ring 9 is abutted with the water pump barrel 18, and not only can be used for positioning the screw in place, but also can be used as a clamping leakage-proof structure. The reliability of the connection between the front end cover and the water pump cylinder 18 is improved through the sealing ring 10, after the front end body 2 and the water pump cylinder 18 are in threaded connection in place, the positioning ring 9 can limit and press the sealing ring 10 to deform and seal, and the sealing effect is reliable. Through the 14 holes 3 of inside connecting thread, outside pipeline or outside horn mouth can be connected to the front end body 2, and outside pipeline or outside horn mouth butt are on location shoulder 13 for the front end housing has the connection function that expands outward, keeps front end housing inner structure stability, can dismantle and set up the replacement, improves the inboard wear-resisting and corrosion-resistant ability of the front end body 2. The front shell 16 is tightly connected through the connecting threads 14 and the fixed cover 15 in a matching mode, the front shell 16 and the front disc body 1 form clamping on the water pump cylinder body 18, and the connection stability of the front end cover and the water pump cylinder body 18 is improved.

Claims

1. The utility model provides a water pump protecgulum structure, characterized by, including interconnect's the preceding disk body and the front end body, the internal rivers import that is equipped with of front end is equipped with the inner chamber of loudspeaker form in the preceding disk body, and the inner chamber includes the less little tip in cross-section and the great big tip in cross-section, and little tip and front end body coupling are equipped with the extension oral siphon that sets up towards the inside of preceding disk body on the front end body, and the extension oral siphon can cooperate with the inlet opening on the water pump impeller.

2. The front cover structure of a water pump as claimed in claim 1, wherein the extension pipe is shaped like a circular ring, the outer diameter of the extension pipe is smaller than the diameter of the water inlet hole, and the extension pipe extends into the water inlet hole.

3. The front cover structure of a water pump as claimed in claim 1, wherein the front disk body has an external thread on its outer periphery for connecting with a water pump barrel, and the front end body has a positioning ring at its outer end for abutting against the end of the water pump barrel.

4. The front cover structure of a water pump as claimed in claim 3, wherein the periphery of the front disk body is provided with a sealing ring between the positioning ring and the external thread.

5. The front cover structure of a water pump as claimed in claim 1 or 2, wherein the front body is provided with a connecting threaded hole, the end of the connecting threaded hole is provided with a positioning shoulder protruding towards the axis of the front body, and the extension pipe is arranged on the positioning shoulder.

6. The water pump front cover structure as claimed in claim 1, wherein the front cover structure is provided with a connecting thread on the outer side, the front cover structure is connected with a fixing cover through the connecting thread, the outer end of the front disk body is provided with a front shell, and the front shell is tightly mounted on the outer side of the front end of the water pump barrel through the fixing cover.

7. The front cover structure of a water pump as claimed in claim 4, wherein the front disc body is provided with a connection ring at the outer end of the large end portion, the connection ring is provided with a mounting groove for fitting the impeller, and the sealing ring, the positioning ring and the external thread are located at the outer end of the connection ring.