CN218235429U - Diaphragm pump with adjustable stroke - Google Patents

Abstract

The utility model discloses a diaphragm pump of adjustable stroke relates to the diaphragm pump field, including motor and the motor shaft of setting on the motor, fixedly connected with jackshaft on the motor shaft, be provided with adjusting part on the jackshaft, make the motor shaft is adjustable in the epaxial position of jackshaft, the surface of jackshaft is provided with crank link assembly, the last diaphragm assembly that is connected with of crank link assembly, diaphragm assembly reciprocates at jackshaft pivoted in-process. Thereby change the position of motor shaft on the jackshaft through the position of adjusting first fastening screw and second fastening screw in this application to change the eccentricity of jackshaft, thereby adjust crank link assembly's eccentricity, thereby change diaphragm assembly's stroke, and then changed the diaphragm assembly and inhaled and the volume of discharge liquid at every turn, realized the regulation of flow.

Description

Diaphragm pump with adjustable stroke

Technical Field

The utility model relates to a diaphragm pump field, in particular to diaphragm pump of adjustable stroke.

Background

Diaphragm pumps are a more particular form of positive displacement pump. It relies on the back and forth movement of a diaphragm to vary the volume of the working chamber to draw in and expel fluid.

The existing diaphragm pump drives the diaphragm to do reciprocating motion by depending on the crank connecting rod assembly under the driving of the motor, so that the volume of a liquid cavity is changed, the liquid is sucked and discharged, but the eccentricity of the crank connecting rod assembly is fixed, the adjustment cannot be carried out according to actual conditions, only other crank connecting rod assemblies can be replaced, and the universality is poor.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a diaphragm pump which can adjust the eccentricity of a crank connecting rod component in a certain range and change the reciprocating stroke of the diaphragm.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a diaphragm pump of adjustable stroke, includes the motor and sets up the motor shaft on the motor, fixedly connected with jackshaft on the motor shaft, be provided with adjusting part on the jackshaft, make the position of motor shaft on the jackshaft is adjustable, adjusting part is used for adjusting the position of motor shaft on the jackshaft to adjust the eccentricity of jackshaft, thereby adjust crank link assembly's eccentricity, thereby change the stroke of diaphragm assembly, and then changed the diaphragm assembly and inhaled and the volume of discharging liquid at every turn, realized the regulation of flow, the surface of jackshaft is provided with crank link assembly, crank link assembly is used for connecting jackshaft and diaphragm assembly, converts jackshaft pivoted power into the power that diaphragm assembly reciprocated, the last diaphragm assembly that is connected with of crank link assembly, diaphragm assembly reciprocates at jackshaft pivoted in-process. The diaphragm assembly moves up and down during rotation of the intermediate shaft to suck or discharge liquid.

Further, the method comprises the following steps: one end of the motor shaft, which is far away from the motor, is arranged to be polygonal. The polygon arrangement increases the contact area between the motor shaft and the intermediate shaft, is convenient for driving the intermediate shaft to rotate, reduces the torque loss, improves the rotating efficiency,

further, the method comprises the following steps: the intermediate shaft comprises a middle large shaft and a middle small shaft, the middle large shaft and the middle small shaft are of an integrated structure, the adjusting assembly is arranged on the middle large shaft, and the crank connecting rod assembly is arranged on the outer surface of the middle small shaft.

Further, the method comprises the following steps: the adjusting assembly comprises a first fastening screw and a second fastening screw which are symmetrically arranged on the middle large shaft, the first fastening screw and the second fastening screw are in threaded connection with the middle large shaft, and the position of the motor shaft on the middle shaft is changed by adjusting the positions of the first fastening screw and the second fastening screw, so that the eccentricity of the middle shaft is changed. Be provided with the recess on the epaxial one side that is close to the motor shaft of centre macroaxis, the lateral wall phase-match that a pair of inside wall and motor shaft are corresponding of recess for the lateral wall of motor shaft tip is laminated with the inside wall of recess mutually, reduces the torque loss, improves the rotational efficiency. The motor shaft can move up and down in the groove, and the first fastening screw and the second fastening screw extend into the groove, and the extending distance is adjustable.

Further, the method comprises the following steps: the crank connecting rod assembly comprises a crank shaft arranged on the outer surface of the middle small shaft, a crank support is arranged on the outer surface of the crank shaft, and the crank support is connected with the diaphragm assembly. The crank shaft and the crank support convert the eccentric rotation force of the middle shaft into a force driving the diaphragm assembly to move up and down.

Further, the method comprises the following steps: and one end of the diaphragm assembly, which is far away from the crank connecting rod assembly, is provided with a cavity shell. The chamber housing and the diaphragm assembly form a liquid chamber volume providing a location for liquid intake and discharge.

Further, the method comprises the following steps: the outer surface of the crank connecting rod component is provided with a main shell, and the main shell is fixedly connected with the cavity shell. The main housing is used for protecting the intermediate shaft, the crank link assembly and the diaphragm assembly.

The beneficial effects of the utility model are that, thereby change the position of motor shaft on the jackshaft through the position of adjusting first fastening screw and second fastening screw in this application to change the eccentricity of jackshaft, thereby adjust crank link assembly's eccentricity, thereby change diaphragm assembly's stroke, and then changed the volume that diaphragm assembly breathes into and discharge liquid at every turn, realized the regulation of flow.

Drawings

Fig. 1 is a schematic view of an overall structure of an embodiment of the present invention;

fig. 2 is a schematic partial structural view of an embodiment of the present invention;

fig. 3 is a schematic view of a motor according to an embodiment of the present invention;

FIG. 4 is a left side view of the intermediate shaft;

FIG. 5 is a right side view of the intermediate shaft;

FIG. 6 is a schematic view of a crank link assembly;

in the figure: 1. a motor; 2. a motor shaft; 3. an intermediate shaft; 4. an adjustment assembly; 5. a crank link assembly; 6. a diaphragm assembly; 7. a middle large shaft; 8. a middle small shaft; 9. a first fastening screw; 10. a second fastening screw; 11. a groove; 12. a crank shaft; 13. a crank bracket; 14. a cavity housing; 15. a main housing.

Detailed Description

The following description of the preferred embodiments of the present invention will be provided with reference to the accompanying drawings, so that the advantages and features of the present invention can be easily understood by those skilled in the art, and the scope of the present invention can be clearly and clearly defined.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the embodiment provides a stroke-adjustable diaphragm pump, which includes a motor 1 and a motor shaft 2 disposed on the motor 1, wherein an intermediate shaft 3 is fixedly connected to the motor shaft 2, the intermediate shaft 3 rotates to drive a crank link assembly 5 to move up and down, an adjusting assembly 4 is disposed on the intermediate shaft 3 to adjust a position of the motor shaft 2 on the intermediate shaft 3, the adjusting assembly 4 is used to adjust a position of the motor shaft 2 on the intermediate shaft 3 to adjust an eccentricity of the intermediate shaft 3, so as to adjust an eccentricity of the crank link assembly 5, so as to change a stroke of the diaphragm assembly 6, so as to change an amount of liquid sucked and discharged by the diaphragm assembly 6 each time, so as to adjust a flow rate, a crank link assembly 5 is disposed on an outer surface of the intermediate shaft 3, the crank link assembly 5 is used to connect the intermediate shaft 3 and the diaphragm assembly 6, so as to convert a force generated by rotation of the intermediate shaft 3 into a force generated by upward and downward movement of the diaphragm assembly 6, the crank link assembly 5 is connected to the diaphragm assembly 6, and the diaphragm assembly 6 moves up and down during rotation of the intermediate shaft 3, so as to suck or discharge liquid.

The working principle is as follows:

the motor 1 rotates to drive the motor shaft 2 to rotate, the motor shaft 2 rotates to drive the intermediate shaft 3 to eccentrically rotate, so that the crank connecting rod assembly 5 is driven to eccentrically rotate, the diaphragm assembly 6 is driven to vertically move, and therefore flow regulation is achieved.

On the basis, as shown in fig. 3, one end of the motor shaft 2, which is far away from the motor 1, is set to be a polygon, which increases the contact area between the motor shaft and the intermediate shaft, facilitates driving the intermediate shaft 3 to rotate, reduces torque loss, and improves rotation efficiency, the polygon may be an even number polygon such as a quadrangle, a hexagon, etc., the quadrangle may be a rectangle or a square, and in this embodiment, the polygon is a square.

On the basis, as shown in fig. 5, the intermediate shaft 3 includes a middle large shaft 7 and a middle small shaft 8, the middle large shaft 7 and the middle small shaft 8 are of an integrated structure, so that torque loss is reduced, and rotation efficiency is improved, the adjusting assembly 4 is arranged on the middle large shaft 7, and the crank connecting rod assembly 5 is arranged on the outer surface of the middle small shaft 8. The motor shaft 2 rotates to drive the middle big shaft 7 to rotate, the middle big shaft 7 rotates to drive the middle small shaft 8 to rotate, and the middle small shaft 8 rotates to drive the crank connecting rod assembly to eccentrically rotate.

On the basis of the above, as shown in fig. 4, the adjusting assembly 4 comprises a first fastening screw 9 and a second fastening screw 10 symmetrically arranged on the middle large shaft 7, the first fastening screw 9 and the second fastening screw 10 are both in threaded connection with the middle large shaft 7, and the position of the motor shaft 2 on the intermediate shaft 3 is changed by adjusting the positions of the first fastening screw 9 and the second fastening screw 10, so that the eccentricity of the intermediate shaft 3 is changed. Be provided with recess 11 on the one side that is close to motor shaft 2 on the middle staff 7, the corresponding outer wall phase-match of a pair of inside wall and motor shaft 2 of recess 11 for the lateral wall of 2 tip of motor shaft is laminated mutually with the inside wall of recess 11, increases the area of contact of motor shaft and recess, reduces the torque loss, improves rotation efficiency. The motor shaft 2 can move up and down in the groove 11, and the first fastening screw 9 and the second fastening screw 10 extend into the groove 11, and the extending distance can be adjusted. The motor shaft 2 extends into the recess 11.

When adjusting the position of the motor shaft 2, the first fastening screw 9 and the second fastening screw 10 are firstly loosened to determine the position of the motor shaft 2 to be adjusted, and then the first fastening screw 9 and the second fastening screw 10 are tightened to fix the motor shaft 2.

On the basis of the above, as shown in fig. 6, the crank link assembly 5 includes a crank shaft 12 disposed on the outer surface of the middle small shaft 8, a crank bracket 13 is disposed on the outer surface of the crank shaft 12, and the crank bracket 13 is connected to the diaphragm assembly 6. The crank shaft 12 and the crank bracket 13 convert the force of the eccentric rotation of the intermediate shaft 3 into a force that drives the diaphragm assembly 6 to move up and down.

On the basis, a cavity shell 14 is arranged at one end of the diaphragm assembly 6, which is far away from the crank connecting rod assembly 5. The chamber housing 14 and diaphragm assembly 6 define a fluid chamber volume that provides a location for fluid intake and exhaust.

On the basis, the outer surface of the crank connecting rod assembly 5 is provided with a main shell 15, and the main shell 15 is fixedly connected with the cavity shell 14. The main housing 15 serves to protect the intermediate shaft 3, the crank-link assembly and the diaphragm assembly 6.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims (7)

1. The utility model provides a diaphragm pump of adjustable stroke, includes motor (1) and sets up motor shaft (2) on motor (1), its characterized in that: the motor shaft (2) is fixedly connected with an intermediate shaft (3), an adjusting assembly (4) is arranged on the intermediate shaft (3), so that the position of the motor shaft (2) on the intermediate shaft (3) can be adjusted, a crank connecting rod assembly (5) is arranged on the outer surface of the intermediate shaft (3), a diaphragm assembly (6) is connected onto the crank connecting rod assembly (5), and the diaphragm assembly (6) moves up and down in the rotating process of the intermediate shaft (3).

2. An adjustable stroke diaphragm pump according to claim 1, wherein: one end of the motor shaft (2) far away from the motor (1) is arranged to be polygonal.

3. An adjustable stroke diaphragm pump according to claim 2, wherein: the intermediate shaft (3) comprises a middle large shaft (7) and a middle small shaft (8), the middle large shaft (7) and the middle small shaft (8) are of an integrated structure, the adjusting component (4) is arranged on the middle large shaft (7), and the crank connecting rod component (5) is arranged on the outer surface of the middle small shaft (8).

4. An adjustable stroke diaphragm pump according to claim 2, wherein: adjusting part (4) are including first fastening screw (9) and second fastening screw (10) that the symmetry set up on middle macroaxis (7), first fastening screw (9) and second fastening screw (10) all with middle macroaxis (7) threaded connection, be provided with recess (11) on middle macroaxis (7) one side that is close to motor shaft (2), the corresponding lateral wall phase-match of a pair of inside wall and motor shaft (2) of recess (11) for the lateral wall of motor shaft (2) tip is laminated with the inside wall of recess (11), motor shaft (2) can reciprocate in recess (11), first fastening screw (9) and second fastening screw (10) stretch into in recess (11), and the distance that stretches into is adjustable.

5. An adjustable stroke diaphragm pump according to claim 4, wherein: the crank connecting rod assembly (5) comprises a crank shaft (12) arranged on the outer surface of the middle small shaft (8), a crank support (13) is arranged on the outer surface of the crank shaft (12), and the crank support (13) is connected with the diaphragm assembly (6).

6. An adjustable stroke diaphragm pump according to claim 1, wherein: and a cavity shell (14) is arranged at one end of the diaphragm component (6) far away from the crank connecting rod component (5).

7. An adjustable stroke diaphragm pump according to claim 6, wherein: the outer surface of the crank connecting rod component (5) is provided with a main shell (15), and the main shell (15) is fixedly connected with the cavity shell (14).

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