CN218093382U

CN218093382U - Diaphragm pump

Info

Publication number: CN218093382U
Application number: CN202222560665.0U
Authority: CN
Inventors: 占新华
Original assignee: Foshan Xingwo Electromechanical Co ltd
Current assignee: Foshan Xingwo Electromechanical Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2022-12-20
Anticipated expiration: 2032-09-27

Abstract

The utility model belongs to the technical field of the pumping equipment, specifically disclose a diaphragm pump, including pump head and motor, be equipped with the pressurized water chamber in the pump head, the pressurized water chamber down, left side water conservancy diversion chamber, right side water conservancy diversion chamber and swing body, the pressurized water chamber all communicates through the check valve of intaking and left water conservancy diversion chamber down, and communicate with right water conservancy diversion chamber through the check valve that goes out, and be equipped with on the lateral wall of pump head respectively with left water conservancy diversion chamber, the water inlet of right side water conservancy diversion chamber intercommunication, the delivery port, swing body installs between pressurized water chamber and pressurized water chamber down, and swing body's middle part has seted up the cavity, the output of motor is equipped with the bearing that is in eccentric position, the cavity is arranged in to the bearing, be equipped with a plurality of spacing muscle in the pump head, spacing muscle is from being close to left water conservancy diversion chamber along the axial, right side of water conservancy diversion chamber, extend to the terminal surface near swing body, through the axial float of spacing muscle restriction swing body, thereby can reduce swing body at the ascending range of removal of axial, reduce the noise of pump water in-process.

Description

Diaphragm pump

Technical Field

The utility model relates to a water pumping equipment technical field, in particular to diaphragm pump.

Background

Diaphragm pumps are a more specific type of positive displacement pumps which rely on the back and forth movement of a diaphragm to change the volume of a working chamber to draw in and expel fluid. The self-priming valve has the characteristics of strong sealing performance, no need of filling and drawing liquid, strong self-priming capability and the like, so the self-priming valve is widely applied to various fields.

The utility model discloses a chinese utility model patent of publication number CN 203175813U specifically discloses a silence electric diaphragm pump. The diaphragm pump comprises a pump head and a motor, wherein an upper water pressing cavity, a lower water pressing cavity, a left diversion cavity, a right diversion cavity and a swinging body are arranged in the pump head, the upper water pressing cavity and the lower water pressing cavity are communicated with the left diversion cavity through a water inlet one-way valve and the right diversion cavity through a water outlet one-way valve, the left diversion cavity is communicated with a water inlet, and the right diversion cavity is communicated with a water outlet; the swinging body is arranged in an accommodating cavity formed between the upper water pressing cavity and the lower water pressing cavity, and elastic films are arranged on the bottom surface of the upper water pressing cavity and the top surface of the lower water pressing cavity (namely, the upper part and the lower part of the swinging body); the inner part of the swinging body is provided with a cavity with an oval section, the output end part of the motor is fixed with an eccentric bearing, namely, the output end of the motor is positioned at the eccentric position of the bearing, the bearing is arranged in the cavity in the swinging body, and the upper end and the lower end of the outer ring of the bearing are in close contact with the inner wall of the cavity. The elastic membrane utilizes last casing and lower casing body pressure to close on the pump head, and the elastic membrane all is equipped with the card hole, the top surface and the bottom surface of the oscillating body all through the card hole joint of pothook and the elastic membrane that corresponds the direction.

However, in actual use, the oscillating body is limited in the radial direction by the cooperation of the hook and the locking hole, but is not limited in the axial direction, and the oscillating body is easy to move in the axial direction in the process of pumping water, so that the noise of the diaphragm pump is still relatively large.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that prior art exists, the utility model provides a diaphragm pump through the axial float of spacing muscle restriction oscillating body to can reduce oscillating body at the ascending range of removal of axial, reduce the noise of pump water in-process.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a diaphragm pump, includes pump head and motor, is equipped with in the pump head and presses the water cavity, presses the water cavity down, left water conservancy diversion chamber, right water conservancy diversion chamber and swing body, goes up and presses the water cavity, presses the water cavity down all through water inflow check valve and left water conservancy diversion chamber intercommunication to through water outflow check valve and right water conservancy diversion chamber intercommunication, and be equipped with on the lateral wall of pump head respectively with water inlet, the delivery port of left water conservancy diversion chamber, right water conservancy diversion chamber intercommunication, the swing body is installed and is pressed between the water cavity and down in last water cavity, and the middle part of the swing body has seted up the cavity, the output of motor is equipped with the bearing that is in eccentric position, the bearing is arranged in the cavity, be equipped with a plurality of spacing muscle in the pump head, spacing muscle extends to being close to from the one side that is close to left water conservancy diversion chamber, right water conservancy diversion chamber along the axial the terminal surface of the swing body.

Preferably, the inner wall of the cavity radially extends to form a limiting convex ring, and the limiting convex ring is located between the bearing and the limiting rib.

Furthermore, the inner ring of the bearing is fixed on the output end of the motor through an eccentric sleeve, and one side of the limiting rib is provided with an avoidance groove matched with the eccentric sleeve.

Further, the pump head includes upper cover, lower cover and casing, the upper cover with the lower cover sets up respectively at the top surface and the bottom surface of casing, and the top surface and the bottom surface of casing all are equipped with elastic diaphragm, the top surface and the bottom surface of casing elastic diaphragm respectively with upper cover, lower cover between form go up the pressurized water chamber, pressurized water chamber down, and seted up on the casing and held the holding chamber of the oscillating body, left side water conservancy diversion chamber, right side water conservancy diversion chamber set up in the left side and the right side of casing.

Furthermore, the elastic diaphragm is provided with a clamping hole, and the top and the bottom of the swinging body are both provided with a clamping hook and are clamped with the clamping hole in the corresponding direction through the clamping hook.

Further, the section of the cavity of the oscillating body is oval, and the top and the bottom of the outer ring of the bearing are in close contact with the inner wall of the cavity of the oscillating body.

The utility model has the advantages that: be equipped with a plurality of spacing muscle in the pump head, spacing muscle extends to the terminal surface that is close to the oscillating body from the one side that is close to left water conservancy diversion chamber, right water conservancy diversion chamber along the axial, through the axial float of spacing muscle restriction oscillating body to can reduce the ascending range of movement of oscillating body in the axial, reduce the noise of pump water in-process.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

fig. 2 is a perspective exploded view of an embodiment of the present invention;

fig. 3 is a perspective cross-sectional view of the embodiment of the present invention (the axis of the output shaft of the motor is taken as a cutting line);

FIG. 4 is an enlarged view of FIG. 3 at A;

fig. 5 is a cross-sectional view of the embodiment of the present invention (the axes of the water inlet and the water outlet are taken as sectioning lines);

fig. 6 is a schematic structural view of the oscillating body, the bearing and the eccentric sleeve in the embodiment of the present invention.

In the figure, 1-pump head, 11-upper pressure water cavity, 12-lower pressure water cavity, 13-left diversion cavity, 14-right diversion cavity, 15-water inlet, 16-water outlet, 17-limiting rib, 171-avoiding groove, 18-upper cover, 181-lower cover, 19-shell, 191-accommodating cavity, 2-motor, 3-swinging body, 31-cavity, 32-limiting convex ring, 33-clamping hook, 4-water inlet one-way valve, 5-water outlet one-way valve, 6-bearing, 7-eccentric sleeve, 8-elastic diaphragm and 81-clamping hole.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in 1~6 of the drawings, the utility model provides a diaphragm pump, including pump head 1 and motor 2, be equipped with last pressurized-water chamber 11 in the pump head 1, pressurized-water chamber 12, left water conservancy diversion chamber 13, right water conservancy diversion chamber 14 and oscillating mass 3, as shown in fig. 5, go up pressurized-water chamber 11, pressurized-water chamber 12 all communicates with left water conservancy diversion chamber 13 through the check valve 4 that intakes, and communicate with right water conservancy diversion chamber 14 through the check valve 5 that goes out, and be equipped with respectively with left water conservancy diversion chamber 13, the water inlet 15 of right water conservancy diversion chamber 14 intercommunication, delivery port 16 on the lateral wall of pump head 1, also be water from water inlet 15 entering left water conservancy diversion chamber 13, flow into last pressurized-water chamber 11 respectively through the check valve 4 that intakes, pressurized-water chamber 12 down, flow into right water conservancy diversion chamber 14 through the check valve 5 that goes out again from last pressurized-water chamber 11, pressurized-water chamber 12 respectively, flow out from delivery port 16 again. As shown in fig. 4 and 6, the oscillating body 3 is installed between the upper water pressing chamber 11 and the lower water pressing chamber 12, and a cavity 31 is opened in the middle of the oscillating body 3. The motor 2 is installed at one end of the pump head 1, the output end (i.e. the output shaft) of the motor 2 is provided with a bearing 6 at an eccentric position (i.e. the central axis of the bearing 6 is not in the same line with the central axis of the output end of the motor 2), the bearing 6 is arranged in the cavity 31, and the top and the bottom of the outer ring of the bearing 6 are in close contact with the inner wall of the cavity 31 of the oscillating body 3.

Preferably, as shown in fig. 6, the cross section of the cavity 31 is an ellipse, and a certain horizontal moving space is reserved for the bearing 6, so that the outer ring of the bearing 6 does not contact with the inner wall of the cavity 31 in the horizontal direction, a horizontal force is not applied to the oscillating body 3, unnecessary work caused by driving the oscillating body 3 to move horizontally is avoided, and only a force is applied in the up-and-down direction.

The working principle is as follows: the motor 2 drives the swinging body 3 to swing, the swinging body 3 regularly extrudes the upper water pressing cavity 11 and the lower water pressing cavity 12, so that water enters the left water guide cavity 13 from the water inlet 15, respectively flows into the upper water pressing cavity 11 and the lower water pressing cavity 12 through the water inlet one-way valve 4, then respectively flows into the right water guide cavity 14 from the upper water pressing cavity 11 and the lower water pressing cavity 12 through the water outlet one-way valve 5, and then flows out from the water outlet 16.

The important point is that as shown in fig. 4, a plurality of limiting ribs 17 are arranged in the pump head 1, the limiting ribs 17 extend from one side close to the left diversion cavity 13 and the right diversion cavity 14 to the end surface close to the oscillating body 3 along the axial direction, and the axial movement of the oscillating body 3 is limited by the limiting ribs 17, so that the moving amplitude of the oscillating body 3 in the axial direction can be reduced, and the noise in the water pumping process can be reduced. In this embodiment, the limiting rib 17 is parallel to the horizontal direction, is integrally formed with the outer walls of the left diversion cavity 13 and the right diversion cavity 14, and extends to the end surface close to the swinging body 3.

As shown in fig. 4, a limit protruding ring 32 extends radially from the inner wall of the cavity 31, and the limit protruding ring 32 is located between the bearing 6 and the limit rib 17. Since the bearing 6 and the stopper rib 17 do not move in the axial direction, they restrict the axial movement of the stopper ring 32, that is, the axial play of the oscillating body 3, and further reduce noise.

As shown in fig. 4, the inner ring of the bearing 6 is fixed on the output end of the motor 2 through the eccentric sleeve 7, so that the bearing 6 is in an eccentric position to drive the oscillating body 3 to oscillate up and down. Meanwhile, one side of the limiting rib 17 is provided with an avoiding groove 171 matched with the eccentric sleeve 7, so that noise generated by friction between the limiting rib 17 and the eccentric sleeve 7 is avoided.

In order to facilitate the production of the diaphragm pump, as shown in fig. 2, the pump head 1 includes an upper cover 18, a lower cover 181 and a housing 19, the upper cover 18 and the lower cover 181 are respectively fixed on the top surface and the bottom surface of the housing 19 by screws, and the top surface and the bottom surface of the housing 19 are both provided with an elastic diaphragm 8, that is, the elastic diaphragm 8 is pressed by the upper cover 18 and the lower cover 181, so that an upper water pressing cavity 11 and a lower water pressing cavity 12 are respectively formed between the elastic diaphragm 8 on the top surface and the bottom surface of the housing 19 and the upper cover 18 and the lower cover 181, and the housing 19 is provided with an accommodating cavity 191 for accommodating the oscillating body 3, and the left flow guide cavity 13 and the right flow guide cavity 14 are arranged on the left side and the right side of the housing 19. The oscillating body 3 oscillates up and down in the accommodating cavity 191, so that the elastic diaphragms 8 of the upper water pressing cavity 11 and the lower water pressing cavity 12 are regularly extruded, the air pressure in the upper water pressing cavity 11 and the lower water pressing cavity 12 is changed, and the water inlet check valve 4 and the water outlet check valve 5 are matched, so that water can be pumped.

Although elastic diaphragm 8 can reset automatically after regularly squeezing oscillating body 3, it is slower to reset, therefore, as shown in fig. 2, seted up card hole 81 on elastic diaphragm 8, oscillating body 3's top and bottom all are equipped with pothook 33 to through pothook 33 and the card hole 81 joint of corresponding direction, thereby make oscillating body 3 and top, the elastic diaphragm 8 of below form an organic whole, thereby at the in-process of oscillating body 3 swing, elastic diaphragm 8 resets more fast, pump water efficiency is higher.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a diaphragm pump, including pump head (1) and motor (2), be equipped with pressurized-water chamber (11) in pump head (1), pressurized-water chamber (12) down, left water conservancy diversion chamber (13), right water conservancy diversion chamber (14) and oscillating body (3), go up pressurized-water chamber (11), pressurized-water chamber (12) all communicate with left water conservancy diversion chamber (13) through intaking check valve (4) down, and communicate with right water conservancy diversion chamber (14) through play water check valve (5), and be equipped with respectively on the lateral wall of pump head (1) with left water conservancy diversion chamber (13), water inlet (15) of right water conservancy diversion chamber (14) intercommunication, delivery port (16), oscillating body (3) are installed between pressurized-water chamber (11) and pressurized-water chamber (12) down, and cavity (31) have been seted up at the middle part of oscillating body (3), the output of motor (2) is equipped with bearing (6) in eccentric position, cavity (31) are arranged in to bearing (6), its characterized in that: the pump head (1) is internally provided with a plurality of limiting ribs (17), and the limiting ribs (17) axially extend to the end surface close to the oscillating body (3) from one side close to the left flow guide cavity (13) and the right flow guide cavity (14).

2. A diaphragm pump according to claim 1, wherein: the inner wall of the cavity (31) radially extends to form a limiting convex ring (32), and the limiting convex ring (32) is located between the bearing (6) and the limiting rib (17).

3. A diaphragm pump according to claim 1 or 2, characterized in that: the inner ring of the bearing (6) is fixed on the output end of the motor (2) through an eccentric sleeve (7), and one side of the limiting rib (17) is provided with an avoiding groove (171) matched with the eccentric sleeve (7).

4. A diaphragm pump according to claim 1, wherein: pump head (1) includes upper cover (18), lower cover (181) and casing (19), upper cover (18) with lower cover (181) set up respectively at the top surface and the bottom surface of casing (19), and the top surface and the bottom surface of casing (19) all are equipped with elastic diaphragm (8), the top surface and the bottom surface of casing (19) elastic diaphragm (8) respectively with upper cover (18), form between lower cover (181) go up pressure water chamber (11), lower pressure water chamber (12), and seted up on casing (19) and held the holding chamber (191) of oscillating body (3), left side water conservancy diversion chamber (13), right side water conservancy diversion chamber (14) set up in the left side and the right side of casing (19).

5. A diaphragm pump according to claim 4, characterized in that: the elastic diaphragm (8) is provided with a clamping hole (81), the top and the bottom of the swinging body (3) are both provided with a clamping hook (33), and the swinging body is clamped with the clamping hole (81) in the corresponding direction through the clamping hook (33).

6. A diaphragm pump according to claim 1, wherein: the section of the cavity (31) of the oscillating body (3) is oval, and the top and the bottom of the outer ring of the bearing (6) are in close contact with the inner wall of the cavity (31) of the oscillating body (3).