CN218548268U

CN218548268U - Switching device with protection structure for sewage lifter and protection structure thereof

Info

Publication number: CN218548268U
Application number: CN202222383953.3U
Authority: CN
Inventors: 李勇; 俞臻
Original assignee: Ningbo Yuanshen Electromechanical Co ltd
Current assignee: Ningbo Yuanshen Electromechanical Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-02-28
Anticipated expiration: 2032-09-07

Abstract

The utility model discloses a sewage lifting mechanism is with taking protective structure's switching device and protective structure thereof, this switching device include switch shell, elasticity end cover, mounting and end cover safety cover, and the end cover of elasticity cooperates in switch port department and is fastened and sealed by the mounting, and end cover safety cover is connected to the last lateral wall that wraps up the elasticity end cover at least of switching device to make this switching device not receive the sewage impact by the lateral wall of back elasticity end cover in being arranged in the sewer line, thereby avoid the elasticity end cover because of receiving particulate matter collision damage, extension switching device's life.

Description

Switching device with protection structure for sewage lifter and protection structure thereof

Technical Field

The utility model relates to a sewage lifting device technical field, concretely relates to sewage lifting device is with take protective structure's switching device to and be used for protective structure wherein.

Background

Sewage lifting mechanism is common drainage device, sewage lifting mechanism's switching device need be located below the liquid level in the use, the switch of switch shell tip is located under water equally on the casing, in the course of the work, the rivers that surge flow towards sewage lifting mechanism, the cover at the bottom of striking elasticity such as hard thing, granule impurity that remove along with the rivers, easily cause the cover at the bottom of the elasticity to break and lead to the direct damage of switch, cause the button to press to be obstructed etc. then lead to the switch operation to receive the influence, need to improve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a longer sewage lifting mechanism of life is with take protective structure's switching device and protective structure thereof.

In order to achieve the above purpose, the utility model adopts the following scheme:

as a first aspect of the utility model provides a sewage lifting mechanism is with taking protective structure's switching device, including switch shell, elastic bottom cover and mounting, the inside cavity of switch shell sets up wherein in order to supply the push switch subassembly, and the lower extreme of switch shell forms to the switch port, and elastic bottom cover cooperates in switch port department in order to seal switch port, mounting cooperate elastic bottom cover to switch port department inclosed. The switch device further comprises a bottom sleeve protection cover which is connected to the switch device and at least wraps the side wall of the elastic bottom sleeve, so that the side wall of the elastic bottom sleeve is not impacted by sewage after the switch device is placed in a sewage pipeline, and the switch device is prevented from being damaged or leaking due to the fact that the elastic bottom sleeve is impacted by particles in the sewage, and scrapping of the switch device is avoided.

According to the switch device with the protection structure for the sewage lifter, the bottom sleeve protection cover is fixed to the switch shell or the fixing piece and extends downwards to a position which is not lower than the side wall of the elastic bottom sleeve, and the bottom sleeve protection cover and the side wall of the elastic bottom sleeve are arranged in a clinging or adjacent mode, so that the side wall of the elastic bottom sleeve is not impacted by sewage.

According to the switch device with the protection structure for the sewage lifter, the bottom sleeve protection cover and the fixing piece are integrally formed and extend downwards to a position which is not lower than the side wall of the elastic bottom sleeve, and the bottom sleeve protection cover and the side wall of the elastic bottom sleeve are arranged in a clinging or adjacent mode, so that the side wall of the elastic bottom sleeve is not impacted by sewage.

According to foretell sewage lifting mechanism is with take protective structure's switching device, switching device includes compound mounting, and the mounting is formed at the upper end of compound mounting, end cover safety cover and is formed at the lower extreme of compound mounting, is formed with the portion of compressing tightly between the two, and the portion of compressing tightly acts on end cover safety cover so that it and switch shell close-fitting laminating are in order to preliminary sealing through its inner wall or the tight-fitting ring that sets up on its inner wall. Wherein, realize preliminary sealing through the tight fit ring when the inner wall that compresses tightly the portion sets up the tight fit ring, then realize through the inner wall that compresses tightly the portion when not setting up the tight fit ring.

According to the switch device with the protection structure for the sewage lifter, the bottom sleeve protection cover is in a cylindrical surface shape, a conical surface shape or a spherical surface shape, and the like, and the lower end of the bottom sleeve protection cover protrudes out of the bottom surface of the elastic bottom sleeve by 1-5 mm.

According to the switch device with the protection structure for the sewage lifter, the composite fixing piece is composed of two fixing piece split bodies which are arranged in a left-right split mode, and the fixing piece split bodies are in a semi-annular shape.

According to the switch device with the protection structure for the sewage lifter, the two ends of each fixing part split body are respectively provided with the buckle piece and the clamping groove, so that the two fixing part split bodies are fixed on the switch shell through the buckle of the buckle piece and the clamping groove in a buckle mode, and the elastic bottom sleeve is clamped and fixed on the switch shell.

According to the switch device with the protection structure for the sewage lifter, one ends of the two fixing parts are hinged, and the other ends of the two fixing parts are detachably fixed to clamp the elastic bottom sleeve and are fixed on the switch shell.

According to the switch device with the protection structure for the sewage lifter, two ends of the two fixing parts are respectively fixed on the switch shell in a detachable mode correspondingly and detachably, and the elastic bottom sleeve is clamped and fixed.

According to foretell sewage lifting mechanism is with take protective structure's switching device, the shaping of a terminal surface department of mounting components of a whole that can function independently has buckle spare, and the head end of locating the body on the buckle spare is the V type, and the tail end top surface of body is the shape of the second grade ladder face that risees gradually from back to front, and the periphery wall of the other end of mounting components of a whole that can function independently is along the radial evagination shaping convex plate, and the shaping through-hole has in order to form the draw-in groove on the convex plate. The tank bottom wall shaping of draw-in groove is fluted, and the recess sets up along the radial extension of the mounting components of a whole that can function independently of locating, and in the recess was arranged in to the high-order ladder in bottom surface of body, the groove jade is spacing to the body about the recess.

According to the switching device with the protection structure for the sewage lifter, the fixing piece is divided into the upper part and the two sides of the buckling piece are also provided with the protruding limiting plates in a protruding mode, and the limiting plates are abutted to the protruding plates to limit the position.

As a second aspect of the utility model, a protective structure for sewage lifting mechanism is provided, protective structure is used for cooperating to switch shell's switch port department to cooperate the switch port department with elastic bottom cover inclosed. The protective structure comprises a fixing piece formed at the upper end of the protective structure and a bottom sleeve protective cover formed at the lower end of the protective structure, the fixing piece is used for hermetically matching the elastic bottom sleeve to the opening and closing port, the bottom sleeve protective cover extends downwards to at least wrap the side wall of the elastic bottom sleeve, and the bottom sleeve protective cover and the side wall of the elastic bottom sleeve are arranged in a clinging or adjacent mode so that the side wall of the elastic bottom sleeve is not impacted by sewage. Adopt this protective structure to replace traditional retainer plate (being equal to the mounting), can avoid leading to its damage or seepage because of the particulate matter striking of elasticity bottom cover in the contaminated water, lead to switching device to scrap.

According to foretell protective structure for sewage lifting mechanism, still be formed with the portion of compressing tightly between mounting and the end cover safety cover, the portion of compressing tightly acts on end cover safety cover so that it is with preliminary sealing with switch shell tight fit laminating through its inner wall or set up the tight fit ring on its inner wall.

According to the protection structure for the sewage lifter, the bottom sleeve protection cover is in a cylindrical surface, a conical surface or a spherical surface shape, and the like, and the lower end of the bottom sleeve protection cover protrudes out of the bottom surface of the elastic bottom sleeve by 1-5 mm.

According to the protection structure for the sewage lifter, the protection structure is composed of the two fixing part split bodies which are arranged in a left-right split mode, and the fixing part split bodies are in a semi-annular shape.

According to the protection structure for the sewage lifter, the two ends of each fixing part split body are respectively provided with the clamping piece and the clamping groove, so that the two fixing part split bodies are fixed on the switch shell through the clamping of the clamping piece and the clamping groove in a clamping mode, and the elastic bottom sleeve is clamped and fixed on the switch shell.

According to the protection structure for the sewage lifter, one ends of the two fixing parts are hinged, and the other ends of the two fixing parts are detachably fixed to clamp the elastic bottom sleeve and are fixed on the switch shell.

According to the protection structure for the sewage lifter, the two ends of the two fixing parts are respectively fixed on the switch shell in a detachable mode correspondingly to the elastic bottom sleeve in a clamping mode.

According to foretell protection architecture for sewage lifting mechanism, the shaping of a terminal surface department of mounting components of a whole that can function independently has buckle spare, and the head end of locating the body on the buckle spare is the V type, and the tail end top surface of body is the shape of the second grade ladder face that rises gradually from back to front, and the periphery wall of the other end of mounting components of a whole that can function independently is along radial evagination shaping convex plate, and the shaping through-hole has in order to form the draw-in groove on the convex plate. The groove bottom wall of the clamping groove is formed with a groove, the groove is arranged along the radial extension of the separated fixing piece, the bottom surface of the body is arranged in the groove in a high-level ladder mode, and the left groove wall and the right groove wall of the groove are limited to the body.

According to the protection structure for the sewage lifter, the fixing piece is arranged on the fixing piece in a split mode, the two sides of the buckling piece are also provided with the protruding limiting plates, and the limiting plates are abutted to the protruding plates for limiting.

Compared with the prior art, the utility model discloses a switching device and protective structure have following beneficial effect:

1. the utility model discloses a set up end cover safety cover and be used for wrapping up at least at the bottom of the elasticity cover lateral wall to make this switching device not receive sewage impact by the lateral wall of back elasticity end cover in arranging sewage conduit in, avoid leading to its damage or seepage because of the particulate matter striking that the elasticity end cover received in the sewage, lead to switching device to scrap, realized extension switch life's effect.

2. The boot is preferably integrally formed at the lower end of the fixing member, so that the number of parts can be reduced and the mounting operation can be simplified.

3. The whole body is formed by splicing two half-type semi-annular fixing pieces in a split mode, and the assembly is easy.

4. After the bottom cover protective cover is arranged, the original floating switch function of the switch device is not influenced.

Drawings

Fig. 1 is a schematic structural view of a switchgear according to an embodiment of the present invention, in which an elastic bottom cover 2 is covered by a bottom cover protecting cover 4, which is not shown in this figure;

FIG. 2 is an exploded schematic view of FIG. 1;

FIG. 3 is a perspective view of the composite fastener of the embodiment of FIG. 1;

FIG. 4 is an exploded view of the composite fastener of FIG. 3;

FIG. 5 is an elevation view of one of the split composite fasteners of FIG. 4;

FIG. 6 is a schematic view of the snap-fit between the snap member and the snap groove.

Detailed Description

In order to better understand the invention for those skilled in the art and to define the scope of the invention more clearly, the invention will be described in detail below with respect to certain specific embodiments of the invention. It should be noted that the following description is only a few examples of the present invention, and the specific and direct description of the related structures is only for the convenience of understanding the present invention, and the specific features do not naturally and directly limit the scope of the present invention. Conventional alternatives and substitutions made by those skilled in the art in light of the teachings of the present disclosure should be considered as within the scope of the present disclosure.

As shown in fig. 1 to 6, a switch device with a protection structure for a sewage lifter is installed in a sewage pipeline to perform automatic switch control by using the floating of sewage, thereby achieving the purpose of controlling the switch based on the height of a water level.

As shown in fig. 1 and 2, the switch device comprises a switch housing 1, an elastic bottom sleeve 2 and a fixing piece 3. The switch housing 1 is hollow for a push switch assembly (not shown) to be disposed therein, a push key in the push switch assembly is located at a switch port of a lower end thereof, and the push switch is generally applied in the industry, such as composition and installation, and is not described herein.

The elastic bottom sleeve 2 is matched at the switch port to seal the switch port, and the fixing piece 3 is used for hermetically matching the elastic bottom sleeve 2 at the switch port. In this embodiment, the elastic bottom sleeve 2 is made of rubber, adopts a cylinder-like shape in shape, and is directly sleeved at the switch port of the switch housing 1.

In this embodiment, the switch device further comprises a bottom cover protective cover 4, which is connected to the switch device and covers at least the side wall of the elastic bottom cover 2, so that the side wall of the elastic bottom cover 2 is not impacted by sewage after the switch device is placed in the sewage pipeline. Wherein, the bottom sleeve protective cover 4 extends to a position which is not lower than the lower end of the side wall of the elastic bottom sleeve 2, and the bottom sleeve protective cover 4 is closely attached or arranged near the side wall of the elastic bottom sleeve 2, so that the side wall of the elastic bottom sleeve 2 is not impacted by sewage.

In some embodiments, the boot cover 4 is fixed to the switch housing 1 or the fixing member 3 and extends to protect the side walls of the elastic boot 2 from the sewage. That is, the boot cover 4 is a separate member which is attached to be fixed to the switch case 1 or the fixing member 3.

In other embodiments, the boot protective cover 4 is integrally formed with the fixing member 3 and extends to protect the side wall of the elastic boot 2 from the sewage. Promptly, end cover safety cover 4 is integrated to mounting 3 on to can reduce part quantity, simplify the installation operation, also can control end cover safety cover 4 lower extreme better for the position of 2 lateral walls lower extremes of elastic end cover, on the basis that can realize the protection, reduce the influence to the sewage flow, avoid the torrent and influence the liquid level response.

As shown in fig. 2, in this embodiment, the switch device includes a composite fixing member 5, the fixing member 3 is formed at the upper end of the composite fixing member, the bottom cover protection cover 4 is formed at the lower end of the composite fixing member, a pressing portion 51 is formed between the fixing member and the bottom cover protection cover, and the pressing portion 51 acts on the bottom cover protection cover 4 through the inner wall of the pressing portion or a close-fitting ring 52 arranged on the inner wall of the pressing portion to make the pressing portion tightly fit with the switch housing 1 for preliminary sealing.

In the embodiment, the bottom sleeve protective cover 4 is in a shape similar to a conical surface, and the lower end of the bottom sleeve protective cover is arranged to protrude 1-5mm from the bottom surface of the elastic bottom sleeve 2; more preferably 1-3mm, to avoid turbulence affecting the level sensing. In other embodiments, the bottom protective cover 4 may be a cylindrical shape arranged vertically, or a spherical shape (a part of a section of a sphere).

As shown in fig. 3-6, in the present embodiment, the composite fixing member 5 is formed by assembling two split parts, i.e., a left split part and a right split part, wherein the split parts are semi-annular and are assembled with each other to form the integral composite fixing member 5. Thus, the composite fastener 5 now includes two fastener body segments 30.

In some embodiments, the two ends of each split composite fixing element 5 are respectively provided with a snap 31 and a snap 32, so that the two split composite fixing elements 5 can be fixed on the switch housing 1 by the snap-in fixing of the snap 31 and the snap 32 to clamp the elastic bottom sleeve 2, thereby fixing the two split composite fixing elements 5.

The fastening element 31 and the locking groove 32 are both formed on the fixing element 3, so that the fixing element 3 is firmly connected after being combined. Because the fastening and sealing of the elastic bottom sleeve 2 are mainly realized by the fixing piece 3, the fastening of the elastic bottom sleeve 2 by the fastening piece 31 and the clamping groove 32 arranged on the fixing piece 3 can be firm, the sleeve protection cover 4 only needs to be fixed and inactive relative to the switch shell 1, and a very strong fastening effect is not needed, so the arrangement is realized.

Specifically, the fastening element 31 is formed on one end surface of the fixing element division body 30, the head end of the body 310 of the fastening element 31 is V-shaped, the top surface of the tail end of the body 310 is in the shape of a secondary stepped surface 311 which gradually rises from back to front, the outer peripheral wall of the other end of the fixing element division body 30 is radially and outwardly formed with a protruding plate 320, and a through hole 321 formed on the protruding plate 320 forms the locking groove 32. When the switch base is installed, the clamping piece of one split of the fixing piece corresponds to the clamping groove of the other split of the fixing piece and can be oppositely plugged, the fixing piece is fixed at the head end of the switch shell in a clamping mode, and the edge of the elastic bottom sleeve 2 is synchronously clamped. For convenient insertion, a groove 33 is formed on the bottom wall of the clamping groove 32, the groove 33 extends along the radial direction of the split body 30 to be communicated with the annular cavity, the groove wall of the groove 33 corresponding to the end part of the split body extends to the end face of the split body, a through groove structure with a vertical groove opening is formed, the bottom surface of the body 310 of the clamping piece 31 is in the shape of a two-stage step surface 311 which gradually rises from front to back, when the two split bodies are fixed, the head end of the body 310 can enter the clamping groove 32 from the groove 33, the bottom surface of the head end abuts against the split body peripheral wall outside the groove 33 and the high step of the limiting top surface of the end surface at the groove opening of the clamping groove 32, as shown in fig. 5, the high step of the bottom surface of the body 310 of the clamping piece 31 is arranged in the groove 33, and the left and right groove walls of the groove 33 limit the body 310 of the clamping piece 31. Optionally, a limiting plate 34 may be formed on the split peripheral walls of the two sides of the fastener 31, so that the limiting plate and the protruding plate 320 of the slot are abutted against each other for limiting.

In other embodiments, one end of the two-part composite fixing piece 5 is hinged, and the other end is detachably fixed; or, the two ends of the two-part composite fixing piece 5 are respectively and correspondingly detachably fixed. This is referred to in the art as a clip of similar construction.

A protection structure for a sewage lifter has the same structure as the composite fixing piece 5, and is not described again.

This protective structure is used for cooperating the switching device department to sewage lifting mechanism to firmly, closely be connected to the switch port department of switch shell 1 lower extreme with elasticity base coat 2, make its switch port sealed by elasticity base coat 2, and elasticity base coat 2 also can be under the effect of buoyancy from top to bottom the activity open or close with the switch module of drive position in switch shell 1, thereby realize the purpose of base liquid level height control switch module switching.

Wherein, the protective structure is also provided with a bottom sleeve protective cover 4 which is used for completely shielding the side wall of the elastic bottom sleeve 2, and the bottom sleeve protective cover 4 is integrally formed at the upper end of the fixing piece 3, thereby not needing to arrange additional components and install the additional components and simplifying the operation. The bottom sleeve protection cover 4 is closely attached or arranged close to the side wall of the elastic bottom sleeve 2, so that when the switch device adopting the protection structure to replace the traditional fixing ring (which is equal to the functional part of the fixing piece 3) is placed in a sewage pipeline, flowing sewage and solid matters left in the sewage cannot directly impact the side wall of the elastic bottom sleeve 2, the possibility that the elastic bottom sleeve 2 is damaged due to collision is greatly reduced, the switch device is prevented from being scrapped, and the service life of the switch device is prolonged.

Claims

1. The switch device with the protection structure for the sewage lifter comprises a switch shell (1), an elastic bottom sleeve (2) and a fixing piece (3), wherein the switch shell (1) is hollow so that a press switch assembly is arranged in the switch shell, the lower end of the switch shell forms a switch port, the elastic bottom sleeve (2) is matched with the switch port to seal the switch port, and the fixing piece (3) is used for hermetically matching the elastic bottom sleeve (2) to the switch port; the switch device is characterized by further comprising a bottom sleeve protective cover (4) which is connected to the switch device and at least wraps the side wall of the elastic bottom sleeve (2), so that the side wall of the elastic bottom sleeve (2) is not impacted by sewage after the switch device is placed in a sewage pipeline.

2. The switch device with the protective structure for the sewage lifter according to claim 1, wherein the bottom cover protecting cover (4) is fixed on the switch housing (1) or the fixing member (3) and extends downwards to a position not lower than the side wall of the elastic bottom cover (2), and the bottom cover protecting cover (4) and the side wall of the elastic bottom cover (2) are closely or adjacently arranged so that the side wall of the elastic bottom cover (2) is not impacted by sewage.

3. The switch device with the protective structure for the sewage lifter according to claim 1, wherein the bottom sleeve protective cover (4) is integrally formed with the fixing member (3) and extends downward to a position not lower than the side wall of the elastic bottom sleeve (2), and the bottom sleeve protective cover (4) is closely attached or closely arranged with the side wall of the elastic bottom sleeve (2) so that the side wall of the elastic bottom sleeve (2) is not impacted by sewage.

4. The switching device with the protection structure for the sewage lifter according to claim 3, wherein the switching device comprises a composite fixing piece (5), the fixing piece (3) is formed at the upper end of the composite fixing piece, the bottom sleeve protection cover (4) is formed at the lower end of the composite fixing piece, a pressing part (51) is formed between the composite fixing piece and the bottom sleeve protection cover, and the pressing part (51) acts on the bottom sleeve protection cover (4) through the inner wall of the pressing part or a close-fitting ring (52) arranged on the inner wall of the pressing part to enable the pressing part to be tightly fitted with the switch shell (1) for primary sealing.

5. The switch device with the protective structure for the sewage lifter according to any one of claims 1 to 4, wherein the bottom cover protective cover (4) is cylindrical, conical or spherical in shape, and the lower end of the bottom cover protective cover is arranged to protrude 1-5mm from the bottom surface of the elastic bottom cover (2).

6. The switching device with the protection structure for the sewage lifter according to claim 4, wherein the composite fixing piece (5) is composed of two fixing piece split bodies (30) which are arranged in a left-right split manner, and the fixing piece split bodies (30) are in a semi-annular shape;

two ends of each fixing part split body (30) are respectively provided with a buckle piece (31) and a clamping groove (32), so that the two fixing part split bodies (30) are fixed on the switch shell (1) in a clamping manner through the buckle pieces (31) and the clamping grooves (32) to clamp the elastic bottom sleeve (2); or one end of each of the two fixing part split bodies (30) is hinged, and the other end is detachably fixed to clamp the elastic bottom sleeve (2) and is fixed on the switch shell (1); or the two ends of the two fixing part split bodies (30) are respectively and detachably fixed to clamp the elastic bottom sleeve (2) and fix the elastic bottom sleeve on the switch shell (1).

7. The switching device with the protective structure for the sewage lifter according to claim 6, wherein a fastening member (31) is formed at one end surface of the fixing member split body (30), a head end of a body (310) arranged on the fastening member (31) is V-shaped, a tail end top surface of the body (310) is in a shape of a two-stage stepped surface (311) which gradually rises from back to front, a convex plate (320) is formed on an outer peripheral wall of the other end of the fixing member split body (30) in a radially outward convex manner, and a through hole (321) is formed in the convex plate (320) to form a clamping groove (32); a groove (33) is formed in the bottom wall of the clamping groove (32), the groove (33) extends along the radial direction of the fixing piece split body (30), the bottom surface of the body (310) is arranged in the groove (33) in a high-level ladder mode, and the left groove wall and the right groove wall of the groove (33) limit the body (310);

and limiting plates (34) which are convexly arranged are further formed on the fixing piece split body (30) and on two sides of the buckling piece (31), and the limiting plates (34) are abutted against the convex plate (320) for limiting.

8. A protection structure for a sewage lifter, for fitting to a switch port of a switch housing (1) for hermetically fitting an elastic bottom sleeve (2) thereto; its characterized in that, protective structure is including forming mounting (3) and the end cover safety cover (4) of forming in its lower extreme department of its upper end department, and mounting (3) closely cooperate elasticity end cover (2) to switch port department, and end cover safety cover (4) downwardly extending is in order to wrap up the lateral wall of elasticity end cover (2) at least, and hug closely or set up with closing on between end cover safety cover (4) and the elasticity end cover (2) lateral wall to the lateral wall that makes elasticity end cover (2) does not receive the dirty water impact.

9. The protection structure for the sewage lifter according to claim 8, wherein a pressing portion (51) is further formed between the fixing member (3) and the bottom sleeve protection cover (4), and the pressing portion (51) acts on the bottom sleeve protection cover (4) through an inner wall of the pressing portion or a close-fit ring (52) arranged on the inner wall of the pressing portion to enable the pressing portion to be in close-fit with the switch shell (1) for primary sealing; the bottom sleeve protection cover (4) is in a cylindrical surface, conical surface or spherical surface shape, and the lower end of the bottom sleeve protection cover is arranged to protrude out of the bottom surface of the elastic bottom sleeve (2) by 1-5 mm;

the protection structure consists of two fixing part split bodies (30) which are arranged in a split manner from left to right, and the fixing part split bodies (30) are in a semi-annular shape; two ends of each fixing part split body (30) are respectively provided with a buckle piece (31) and a clamping groove (32), so that the two fixing part split bodies (30) are fixed on the switch shell (1) in a clamping manner through the buckle pieces (31) and the clamping grooves (32) to clamp the elastic bottom sleeve (2); or one end of each of the two fixing part split bodies (30) is hinged, and the other end is detachably fixed to clamp the elastic bottom sleeve (2) and fix the elastic bottom sleeve on the switch shell (1); or the two ends of the two fixing part split bodies (30) are respectively and detachably fixed to clamp the elastic bottom sleeve (2) and fix the elastic bottom sleeve on the switch shell (1).

10. The protection structure for the sewage lifter according to claim 9, wherein a buckle (31) is formed at one end surface of the fixing member split body (30), the head end of the body (310) arranged on the buckle (31) is V-shaped, the top surface of the tail end of the body (310) is in the shape of a two-stage stepped surface (311) which gradually rises from back to front, a convex plate (320) is formed on the outer peripheral wall of the other end of the fixing member split body (30) in a radially outward convex manner, and a through hole (321) is formed on the convex plate (320) to form a clamping groove (32); a groove (33) is formed in the bottom wall of the clamping groove (32), the groove (33) extends along the radial direction of the fixing piece split body (30), the bottom surface of the body (310) is arranged in the groove (33) in a high-level step mode, and the left and right groove walls of the groove (33) limit the body (310); and the fixing piece split body (30) and two sides of the buckle piece (31) are also provided with protruding limiting plates (34), and the limiting plates (34) are abutted against the convex plates (320) for limiting.