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CN-224233488-U - Electromagnetic pump with improved pump body connecting structure

CN224233488UCN 224233488 UCN224233488 UCN 224233488UCN-224233488-U

Abstract

An electromagnetic pump with improved pump body connection structure comprises a stator assembly, a water-blocking sleeve, a pump body, a movable pump core, a spring and a check assembly, and is characterized in that the water-blocking sleeve is tubular, two through holes which are radially opposite and communicated with an inner cavity of the water-blocking sleeve are formed in one side of the water-blocking sleeve, the pump body comprises a hollow columnar main body part, the radial surface of the main body part, which is axially close to one side of the water-blocking sleeve, is inwards concave to form an annular inner groove, and limiting pieces which extend into the inner groove of the pump body and limit the pump body to axially deviate from the water-blocking sleeve are arranged in the opening directions of the two through holes. According to the electromagnetic pump with the improved pump body connecting structure, a threaded hole is not required to be arranged on the stator assembly, the limiting piece penetrates through the through hole in the water barrier and stretches into the groove of the pump body, the pump body can be arranged at one axial end of the water barrier in an anti-falling mode, the risk of short circuit caused by external water vapor penetrating into the stator assembly is reduced, and the working stability of the electromagnetic pump is improved.

Inventors

  • Ao lin
  • ZHONG GUOHUA

Assignees

  • 汉宇集团股份有限公司

Dates

Publication Date
20260512
Application Date
20250424

Claims (9)

  1. 1. The electromagnetic pump with the improved pump body connecting structure comprises a stator assembly (100), a water isolation sleeve (200) fixed on the stator assembly, a pump body (300) arranged on one axial side of the water isolation sleeve, a movable pump core (400) arranged in a working cavity (10) surrounded by the water isolation sleeve and the pump body, a spring (500) arranged on one axial side of the movable pump core and a check assembly (600) arranged on the other axial side of the movable pump core, and is characterized in that the water isolation sleeve (200) is tubular, two through holes (210) which are radially opposite and communicated with the inner cavity of the water isolation sleeve are arranged on one axial side of the water isolation sleeve, the pump body (300) comprises a hollow columnar main body part (310), an annular inner groove (311) is concavely formed in the radial surface of one axial side of the main body part, and limiting pieces which extend into the inner groove (311) of the pump body and limit the pump body (300) from axially falling out of the water isolation sleeve (200) are arranged in the opening directions of the two through holes (210).
  2. 2. The electromagnetic pump with improved pump body connection structure according to claim 1, wherein the limiting piece is a pair of mutually buckled inserting pieces (700), in the axial projection of the electromagnetic pump, the projected outline of the inserting pieces (700) at least partially coincides with the projected outline of the inner groove (311), and the projected outline of the inserting pieces (700) at least partially coincides with the projected outline of the through hole (210).
  3. 3. The electromagnetic pump with improved pump body connection structure according to claim 2, wherein the mutually buckled inserting pieces (700) have the same structure, the inserting pieces (700) comprise a first inserting portion (710), a second inserting portion (720) and a connecting portion (730) which are positioned at two sides of the inserting pieces, the first inserting portion (710) and the second inserting portion (720) protrude outwards towards the end face of the other inserting piece which is mutually buckled with the first inserting portion and the second inserting portion respectively to form a first cantilever (711) and a second cantilever (721), the end parts of the first cantilever (711) and the second cantilever (721) are respectively provided with a first back-off (712) and a second back-off (722), and in the axial projection of the electromagnetic pump, the projected outlines of the first cantilever (711) and the second cantilever (721) are at least partially overlapped with the projected outline of the inner groove (311).
  4. 4. An electromagnetic pump with improved pump connection according to claim 3, characterized in that in the axial projection of the electromagnetic pump, the projected contour of the insert (700) is located radially outside the projected contour of the radial surface (312) of the inner groove (311).
  5. 5. The electromagnetic pump with improved pump body connection as set forth in claim 3, wherein the first undercut (712) is axially convex in a direction opposite to the second undercut (722).
  6. 6. The electromagnetic pump with improved pump body connection according to claim 3 or 4, wherein the end surfaces of the first plug-in connection part (710) and the second plug-in connection part (720) facing the other plug-in piece which is mutually buckled with the first plug-in connection part are respectively protruded outwards to form a columnar first surrounding edge part (713) and a columnar second surrounding edge part (723).
  7. 7. The electromagnetic pump with improved pump body connection according to claim 3, wherein the axial end surface of the connecting portion (730) is provided with at least a pair of columnar bosses (731).
  8. 8. The electromagnetic pump with improved pump body connection structure according to claim 1, wherein the water blocking sleeve (200) is axially provided with an annular mounting boss (220) close to the pump body (300), the mounting boss (220) is axially below the through hole, and an elastic first sealing ring (810) is arranged between the pump body (300) and the axial direction of the mounting boss (220).
  9. 9. The electromagnetic pump with improved pump body connection structure according to claim 1 or 8, wherein the outer surface of one side of the pump body (300) axially close to the water blocking sleeve (200) is radially recessed to form an annular first mounting table (320), the inner cavity wall surface of one side of the pump body (300) axially close to the water blocking sleeve (200) is radially recessed to form an annular second mounting table (330), the first mounting table (320) and the second mounting table (330) are respectively provided with a second elastic sealing ring (820) and a third elastic sealing ring (830), and in an assembled state, the first mounting table (320) and the second mounting table (330) are positioned below the through hole (210) in the axial direction.

Description

Electromagnetic pump with improved pump body connecting structure Technical Field The utility model relates to an electromagnetic pump with an improved pump body connecting structure, and belongs to F04B53/16 in IPC classification. Background The structure of current electromagnetic pump is as shown in patent publication No. CN205445937U, and it includes magnet isolation pipe (i.e. water jacket), pump body, set up in the pump core in magnet isolation pipe, set up in magnet isolation pipe outside coil enameled wire, cup joint the coil enameled wire in its inside magnetizer (i.e. magnet yoke) etc. wherein, establishes the screw hole on the magnetizer, and the pump body is fixed through the screw cooperation after cup jointing in the magnetizer. When the existing electromagnetic pump is used in a humid or splashed environment, external water vapor or water can infiltrate into the coil enameled wire along the screw holes of the screw and the magnetizer, so that the risk of electric leakage is caused, and therefore, the need for improvement exists. Disclosure of utility model In order to solve the problems, the utility model provides the following technical scheme: the electromagnetic pump is characterized in that the water shielding sleeve is tubular, two through holes which are radially opposite and communicated with an inner cavity of the water shielding sleeve are formed in one side of the water shielding sleeve, the pump body comprises a hollow columnar main body part, the radial surface of the main body part, which is axially close to one side of the water shielding sleeve, is inwards concave to form an annular inner groove, and limiting pieces which extend into the inner groove of the pump body and limit the axial escape of the pump body from the water shielding sleeve are respectively arranged in the opening directions of the two through holes. According to the electromagnetic pump with the improved pump body connecting structure, a threaded hole is not required to be arranged on the stator assembly, the limiting piece penetrates through the through hole in the water barrier and stretches into the groove of the pump body, the pump body can be arranged at one axial end of the water barrier in an anti-falling mode, the risk of short circuit caused by external water vapor penetrating into the stator assembly is reduced, and the working stability of the electromagnetic pump is improved. Further, the limiting piece is a pair of inserting pieces which are mutually buckled, in the axial projection of the electromagnetic pump, the projection outline of the inserting piece at least partially coincides with the projection outline of the inner groove, and the projection outline of the through hole at least partially coincides with the projection outline of the inserting piece. Still further, the structure of the inserted sheet of mutual lock joint is the same, and the inserted sheet is including the first grafting portion that is located its both sides, second grafting portion and the connecting portion of connecting both, first grafting portion and second grafting portion towards the terminal surface of another inserted sheet rather than mutual lock joint outwards protrusion first cantilever and second cantilever respectively, and first back-off and second back-off are established respectively to the tip of first cantilever and second cantilever, and in electromagnetic pump's axial projection, the profile of the projection of first cantilever and second cantilever at least partially coincides with the profile of inner groovy projection. Further, in the axial projection of the electromagnetic pump, the projected contour of the insert is located radially outside the projected contour of the radial surface of the inner groove. Further, the axial projection directions of the first back-off and the second back-off are opposite. Furthermore, the end faces of the first inserting part and the second inserting part, which face the other inserting piece mutually buckled with the first inserting part and the second inserting part, are respectively outwards protruded to form a columnar first surrounding edge part and a columnar second surrounding edge part. Further, at least a pair of columnar bosses are protruded from the axial end face of the connecting portion. Further, an annular mounting boss is arranged on the side, close to the pump body, of the water blocking sleeve in the axial direction, the mounting boss is located below the axial direction of the through hole, and an elastic first sealing ring is arranged between the pump body and the axial direction of the mounting boss. Further, the outer surface of one side of the pump body, which is axially close to the water blocking sleeve, is radially inwards recessed to form an annular first mounting table, the inner cavity wall surface of one side of the pump body, which is axially close to the water blocking sleeve, is radially outwards recessed to form an annular second