CN216895072U

CN216895072U - Deep well pump liquid level switch mounting structure

Info

Publication number: CN216895072U
Application number: CN202220537360.5U
Authority: CN
Inventors: 蔡锦杰
Original assignee: TAIZHOU YANGCHUN ELECTRIC MOTOR CO Ltd
Current assignee: TAIZHOU YANGCHUN ELECTRIC MOTOR CO Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-07-05
Anticipated expiration: 2032-03-11

Abstract

The utility model provides a deep well pump liquid level switch mounting structure, and belongs to the technical field of water pumps. It has solved the current not good problem of deep-well pump liquid level switch job stabilization nature. The deep-well pump comprises a pump body, a casing and a cylindrical support arranged between the pump body and the casing, wherein a liquid level switch comprises a main body and a cable, a water inlet is formed in the lower end of the support, an installation structure comprises a circuit board which is fixed in the casing and is used for electrically connecting the cable, the main body is arranged in the upper end of the support, and a limiting structure used for positioning the main body is arranged in the support; the casing is provided with a mounting hole for the cable to extend into, and the mounting hole is provided with a sealing structure for sealing the cable and the casing. This deep-well pump liquid level switch mounting structure can improve liquid level switch job stabilization nature.

Description

Deep well pump liquid level switch mounting structure

Technical Field

The utility model belongs to the technical field of water pumps, and relates to a deep-well pump, in particular to a deep-well pump liquid level switch mounting structure.

Background

The deep well pump features that the motor and the pump are integrated into one integral, and it is immersed in underground water well for pumping and conveying water and is widely used in irrigation and drainage in farmland, industrial and mining enterprises, city water supply and drainage, sewage treatment, etc. Since the motor is submerged at the same time, the structural requirements for the motor are more specific than those for a general motor.

The existing deep well pump is a submersible pump (application number: 201320777307.3) as disclosed in Chinese patent library, comprising a pump body with a water inlet, a pump shell arranged above the pump body and provided with a water outlet, and a supporting plate arranged between the pump body and the pump shell, wherein the supporting plate is provided with a motor, a rotating shaft of the motor extends into the pump body and is sleeved with an impeller, a capacitor disc, a capacitor cover buckled above the capacitor disc and a capacitor arranged between the capacitor disc and the capacitor cover are arranged above the motor, the pump shell is provided with a cover cap used for fixing the capacitor cover, the capacitor is electrically connected with the motor, and the outer side of the pump body is provided with a float switch electrically connected with the capacitor.

In above-mentioned immersible pump, the float switch is in whole pump body outside completely, receives external environment to disturb easily, influences job stabilization nature and precision.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a deep-well pump liquid level switch mounting structure aiming at the problems in the prior art, and solves the technical problem of how to improve the working stability of a liquid level switch.

The purpose of the utility model can be realized by the following technical scheme: the deep well pump liquid level switch mounting structure comprises a pump body, a casing and a cylindrical support arranged between the pump body and the casing, wherein the liquid level switch comprises a main body and a cable, a water inlet is formed in the lower end of the support, the mounting structure comprises a circuit board which is fixed in the casing and is used for electrically connecting the cable, and the deep well pump liquid level switch mounting structure is characterized in that the main body is arranged in the upper end of the support, and a limiting structure used for positioning the main body is arranged in the support; the casing is provided with a mounting hole for the cable to extend into, and the mounting hole is provided with a sealing structure for sealing the cable and the casing.

The liquid level switch main body is arranged in the support, the installation hole for the liquid level switch cable to extend into and be electrically connected with the circuit board is formed in the casing, and the whole liquid level switch is completely arranged in the deep well pump, so that the interference of the external environment to the liquid level switch is effectively reduced, and the service life of the liquid level switch can be prolonged while the working stability of the liquid level switch is improved.

In foretell deep-well pump liquid level switch mounting structure, the shaping has the interior ring body that supplies the pump shaft of deep-well pump to pass in foretell support upper end, and interior ring body outer wall passes through connection piece and leg joint, and the connection piece has at least two and along interior ring body circumference equipartition, forms the draw-in groove that matches with above-mentioned main part between the two adjacent connection pieces, and foretell limit structure is one of them draw-in groove, and the main part card is established in corresponding the draw-in groove, has simple structure, simple to operate's advantage.

In foretell deep-well pump liquid level switch mounting structure, the draw-in groove is rectangular form and runs through the setting along the support axial, makes the main part vertical insertion, easy to assemble.

In the deep well pump liquid level switch mounting structure, the inner ring body is provided with a limiting structure for radially limiting the pump shaft, so that the pump shaft is prevented from shaking, and the rotation stability is improved.

The inner ring body is used for supporting the connecting sheet and supporting the limiting structure, namely, the inner ring body has the effect of dual purposes, and the structure is simplified and the assembly is convenient.

In the above-mentioned deep well pump liquid level switch mounting structure, the limit structure includes the bush fixed in the inner ring body and the shaft sleeve fixed on the pump shaft, the outside wall of the shaft sleeve and the inside wall of the bush are circumferential surfaces matched with each other and are stuck together.

Naturally, the limiting structure can also be only a shaft sleeve, the shaft sleeve is sleeved and fixed on the pump shaft, and the outer side wall of the shaft sleeve and the inner side wall of the inner ring body are circumferential surfaces matched with each other and are adhered together.

As another scheme, in the deep-well pump liquid level switch mounting structure, a positioning groove matched with the main body is formed in the inner side wall of the support, and the main body is clamped in the positioning groove.

In foretell deep-well pump liquid level switch mounting structure, the cable is including being the column and with the rubber body of mounting hole matching, seal structure includes integrated into one piece annular convex shoulder on the mounting hole inner wall, the rubber body is inserted and is established in the mounting hole and is pressed on annular convex shoulder, be equipped with on the casing and make the rubber body have the extruded article to annular convex shoulder direction removal trend, make the rubber body compress tightly and form sealedly on annular convex shoulder, have simple to operate, sealed effectual advantage.

In foretell deep-well pump liquid level switch mounting structure, the extruded article is for fixing the clamp plate on the casing, is equipped with on the clamp plate along the through-hole that the support axial runs through the setting, and the rubber body is worn to establish in the through-hole, and the shaping has the annular to keep off along on the through-hole inner wall, and the annular keeps off along pressing on the external wall of the rubber body.

In foretell deep-well pump liquid level switch mounting structure, the clamp plate passes through the screw and can dismantle with the casing and link firmly, does benefit to the dismouting of liquid level switch.

As another scheme, in the deep well pump liquid level switch mounting structure, a clamp spring groove is formed in the inner wall of the mounting hole, the extrusion piece is a clamp spring arranged in the clamp spring groove, an annular step is formed in the outer wall of the rubber body, and the edge of the clamp spring is pressed on the bottom wall of the annular step.

In the above-mentioned deep-well pump liquid level switch mounting structure, the filter screen is fixed at the water inlet for filter the fluid that enters into the support, in order to further protect the liquid level switch.

In the deep well pump liquid level switch mounting structure, the support, the inner ring body and the connecting sheet are of an integrated structure.

Compared with the prior art, this deep-well pump liquid level switch mounting structure has following advantage:

1. the liquid level switch main body is arranged in the support, the installation hole for the liquid level switch cable to extend into and be electrically connected with the circuit board is formed in the casing, and the whole liquid level switch is completely arranged in the deep well pump, so that the interference of the external environment to the liquid level switch is effectively reduced, and the service life of the liquid level switch can be prolonged while the working stability of the liquid level switch is improved.

2. The inner ring body is used for supporting the connecting sheet and supporting the limiting structure, namely, the inner ring body has the effect of dual purposes, and the structure is simplified and the assembly is convenient.

Drawings

FIG. 1 is a schematic perspective view of a deep well pump.

FIG. 2 is a schematic cross-sectional view of a deep well pump.

Fig. 3 is an enlarged schematic view of a structure at a in fig. 2.

Fig. 4 is a schematic view of the mounting structure of the main body.

Fig. 5 is a schematic view of a positional structure of an extrusion.

In the figure, 1, a pump body; 2. a housing; 2a, an annular shoulder; 3. a support; 3a, a water inlet; 3b, an inner ring body; 3c, connecting sheets; 3d, a clamping groove; 4. filtering with a screen; 5. a liquid level switch; 5a, a main body; 5b, a cable; 5b1, rubber body; 6. a circuit board; 7. a pump shaft; 8. a bushing; 9. an extrusion; 9a, an annular blocking edge; 10. and (4) screws.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 and 2, the deep well pump includes a pump body 1, a casing 2, and a cylindrical bracket 3 provided between the pump body 1 and the casing 2. Wherein, the lower end of the bracket 3 is provided with a water inlet 3a, and preferably, a filter screen 4 is fixed at the water inlet 3a and is used for filtering the fluid flowing into the bracket 3. In the actual product, there are two water inlets 3a and along the 3 circumference equipartitions of support, filter screen 4 is the annular.

The level switch 5 is an existing product, which is commercially available. In the present embodiment, it is preferable that the level switch 5 is an electrically conductive level switch 5, and the level switch 5 includes a main body 5a and a cable 5 b.

As shown in fig. 2 and fig. 3, the installation structure comprises a circuit board 6 fixed in the casing 2, and a cable 5b of the liquid level switch 5 is electrically connected with the circuit board 6 for controlling the on-off of the deep well pump motor. The main body 5a is arranged in the upper end of the bracket 3, and a limiting structure for positioning the main body 5a is arranged in the bracket 3. The casing 2 is provided with a mounting hole for the cable 5b to extend into, and the mounting hole is provided with a sealing structure for sealing the cable 5b and the casing 2. Set up liquid level switch 5 main part 5a in support 3, and set up on casing 2 and supply liquid level switch 5 cable 5b to stretch into and with the mounting hole of 6 electricity connections of circuit board, make whole liquid level switch 5 be in deep-well pump inside completely to effectively reduce external environment and to liquid level switch 5's interference, when improving liquid level switch 5 job stabilization nature, can prolong liquid level switch 5 life-span again.

In the present embodiment, it is preferred that,

as shown in fig. 4, the limiting structure is specifically as follows: an inner ring body 3b is formed in the upper end of the support 3, the inner ring body 3b and a pump shaft 7 are coaxially arranged, and the pump shaft 7 of the deep well pump penetrates through the inner ring body 3 b. The outer wall of the inner ring body 3b is connected with the support 3 through connecting pieces 3c, the connecting pieces 3c are at least two and are uniformly distributed along the circumferential direction of the inner ring body 3b, a clamping groove 3d matched with the main body 5a is formed between every two adjacent connecting pieces 3c, the limiting structure is one clamping groove 3d, and the main body 5a is clamped in the corresponding clamping groove 3 d. Further explaining, the bracket 3, the inner ring body 3b and the connecting piece 3c are of an integrated structure; the clamping groove 3d is in a long strip shape and penetrates through the bracket 3 in the axial direction, so that the main body 5a is vertically inserted, and the installation is convenient.

Furthermore, be equipped with the limit structure who is used for radial spacing pump shaft 7 in the interior annular body 3b to prevent that pump shaft 7 from rocking, improve rotational stability, at this moment, interior annular body 3b both had been used for supporting connection piece 3c, was used for supporting limit structure again, and in this application, interior annular body 3b possesses the dual-purpose effect of a thing, when simplifying the structure, the equipment of being convenient for.

As shown in fig. 4, the limiting structure is specifically as follows: the pump shaft comprises a lining 8 fixed in an inner ring body 3b and a shaft sleeve fixed on a pump shaft 7, wherein the outer side wall of the shaft sleeve and the inner side wall of the lining 8 are circumferential surfaces matched with each other and are attached together. Naturally, the limiting structure can also be only a shaft sleeve, the shaft sleeve is sleeved and fixed on the pump shaft 7, and the outer side wall of the shaft sleeve and the inner side wall of the inner ring body 3b are circumferential surfaces matched with each other and are adhered together.

The sealing structure is as follows: as shown in fig. 3 and 5, the cable 5b includes a rubber body 5b1 which is in a column shape and matches with the mounting hole, the sealing structure includes an annular shoulder 2a which is integrally formed on the inner wall of the mounting hole, and the annular shoulder 2a and the mounting hole are coaxial, the rubber body 5b1 is inserted into the mounting hole and pressed on the annular shoulder 2a, the casing 2 is provided with a pressing member 9 which makes the rubber body 5b1 have a moving trend towards the annular shoulder 2a, so as to make the rubber body 5b1 press against the annular shoulder 2a to form a seal, which has the advantages of convenient installation and good sealing effect.

The extruded piece 9 is for fixing the clamp plate on casing 2, is equipped with the through-hole that runs through the setting along support 3 axial on the clamp plate, and the rubber body 5b1 is worn to establish in the through-hole, and the shaping has the annular to keep off along 9a on the through-hole inner wall, and the annular keeps off along 9a pressure on the outer wall of the rubber body 5b 1. The optimized pressing plate is detachably and fixedly connected with the machine shell 2 through screws 10, and the liquid level switch 5 is conveniently dismounted and mounted.

Example two

The structure and principle of the second embodiment are basically the same as those of the first embodiment, and different points are as follows: the inside wall of the bracket 3 is provided with a positioning groove matched with the main body 5a, and the main body 5a is clamped in the positioning groove.

EXAMPLE III

The structure and principle of the third embodiment are basically the same as those of the first embodiment, and different points are as follows: the jump ring groove has been seted up on the mounting hole inner wall, and annular step has been seted up for the jump ring of locating in the jump ring groove to extruded article 9 on the outer wall of rubber body 5b1, and the jump ring border is pressed on annular step diapire.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The deep-well pump liquid level switch mounting structure comprises a pump body (1), a casing (2) and a cylindrical support (3) arranged between the pump body (1) and the casing (2), wherein the liquid level switch (5) comprises a main body (5a) and a cable (5b), a water inlet (3a) is formed in the lower end of the support (3), the mounting structure comprises a circuit board (6) which is fixed in the casing (2) and used for electrically connecting the cable (5b), and the deep-well pump liquid level switch mounting structure is characterized in that the main body (5a) is arranged in the upper end of the support (3), and a limiting structure used for positioning the main body (5a) is arranged in the support (3); the casing (2) is provided with a mounting hole for the cable (5b) to extend into, and the mounting hole is provided with a sealing structure for sealing the cable (5b) and the casing (2).

2. The deep well pump liquid level switch mounting structure of claim 1, characterized in that an inner ring body (3b) for a pump shaft (7) of the deep well pump to pass through is formed in the upper end of the bracket (3), the outer wall of the inner ring body (3b) is connected with the bracket (3) through connecting pieces (3c), at least two connecting pieces (3c) are uniformly distributed along the circumference of the inner ring body (3b), a clamping groove (3d) matched with the main body (5a) is formed between two adjacent connecting pieces (3c), the limiting structure is one clamping groove (3d), and the main body (5a) is clamped in the corresponding clamping groove (3 d).

3. The deep-well pump liquid level switch mounting structure of claim 2, characterized in that the slot (3d) is elongated and is arranged to extend through the bracket (3) in the axial direction.

4. The deep well pump liquid level switch mounting structure of claim 2 or 3, characterized in that a limit structure for radially limiting the pump shaft (7) is provided in the inner ring body (3 b).

5. The deep well pump liquid level switch mounting structure of claim 4, characterized in that the limit structure comprises a bushing (8) fixed in the inner ring body (3b) and a shaft sleeve fixed on the pump shaft (7), wherein the outer side wall of the shaft sleeve and the inner side wall of the bushing (8) are circumferential surfaces matched with each other and are attached together.

6. The deep well pump liquid level switch mounting structure of claim 1, characterized in that the cable (5b) comprises a rubber body (5b1) which is cylindrical and matches with the mounting hole, the sealing structure comprises an annular shoulder (2a) which is integrally formed on the inner wall of the mounting hole, the rubber body (5b1) is inserted in the mounting hole and presses on the annular shoulder (2a), and a pressing piece (9) which makes the rubber body (5b1) have a moving trend towards the annular shoulder (2a) is arranged on the machine shell (2).

7. The deep well pump liquid level switch mounting structure of claim 6, characterized in that the extrusion member (9) is a pressing plate fixed on the casing (2), the pressing plate is provided with a through hole axially penetrating along the bracket (3), the rubber body (5b1) is arranged in the through hole in a penetrating way, the inner wall of the through hole is formed with an annular blocking edge (9a), and the annular blocking edge (9a) presses on the outer wall of the rubber body (5b 1).

8. The deep-well pump liquid level switch mounting structure of claim 7, characterized in that the pressure plate is detachably and fixedly connected with the casing (2) by a screw (10).

9. Deep well pump liquid level switch mounting structure according to claim 1, characterized in that a filter screen (4) is fixed at the water inlet (3 a).

10. The deep-well pump liquid level switch mounting structure of claim 2, characterized in that the bracket (3), the inner ring (3b) and the connecting piece (3c) are of an integral structure.