CN211900933U

CN211900933U - Capsule seat assembly of high-load long-life diaphragm pump

Info

Publication number: CN211900933U
Application number: CN202020388491.2U
Authority: CN
Inventors: 颜宏
Original assignee: Xiamen Conjoin Electronics Technology Co ltd
Current assignee: Xiamen Conjoin Electronics Technology Co ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-11-10
Anticipated expiration: 2030-03-24

Abstract

The utility model discloses a capsule seat subassembly of long-life diaphragm pump of high load, constitute by capsule seat main part and axle sleeve, the axle sleeve is the components of a whole that can function independently shaping with the capsule seat main part, capsule seat main part is located the formation centre bore in central point, the central line of centre bore is located the longitudinal axis of diaphragm pump, the axle sleeve fastening is installed in the centre bore of capsule seat main part, it plants to form the upper end that the upper groove supplied the transmission shaft on the axle sleeve, the central line of upper groove also is located the longitudinal axis of diaphragm pump, the oral area of upper groove is the conical horn mouth, the bottom is face of cylinder counter bore, the inner wall of conical horn mouth supplies the upper end contact of transmission shaft and. The utility model discloses a different materials can be selected to bag seat main part and axle sleeve, both can satisfy the problem of transmission shaft and upper groove (axle sleeve) wearability, guarantee the rigidity intensity of bag seat main part under the high pressure load in utricule compression expansion motion again, and structural suitable high load is used for a long time, guarantees that the transmission is normal, effective, and moreover, the cost of overall spare part is lower.

Description

Capsule seat assembly of high-load long-life diaphragm pump

Technical Field

The utility model relates to a technical field of diaphragm pump, concretely relates to bag seat subassembly of vertical eccentric rotatory diaphragm pump of high load long-life.

Background

In the prior art, a transmission device of a vertical eccentric rotary diaphragm pump is generally shown in fig. 1 and 2, and includes an eccentric wheel 30, a transmission shaft 40, and a support frame 50, and cooperates with a capsule seat 60 to implement a transmission function, the eccentric wheel 30 is fixedly mounted on an output shaft of a motor 10 by means of a wheel center hole, the transmission shaft 40 is fixed in the support frame 50, a lower end of the transmission shaft 40 contacts with a lower groove a of the eccentric wheel 30, and an upper end contacts with an upper groove b at a central position of the capsule seat 60. In operation, the motor 10 mounted on the base 20 drives the eccentric wheel 30 to drive the transmission shaft 40 to eccentrically rotate, so that the support arm of the support frame 50 moves up and down to drive the capsule 70 to suck or extrude, thereby pumping out the fluid from the outlet of the top cover 80.

In the transmission device in the prior art, an upper groove b is directly formed at the central position of the bag seat 60 in an integral injection molding mode, and the bag seat 60 is made of wear-resistant materials in consideration of the fact that the upper groove b is in contact transmission with the transmission shaft 40; however, the wear-resistant material is weak in temperature resistance and rigidity strength, and if the whole capsule seat 60 is made of wear-resistant and high-temperature-resistant materials, the cost is high, so that the capsule seat 60 is usually made of a material with good wear resistance but poor high-temperature resistance; however, high temperature is easily generated in a high-load long-time operation occasion, so that the bag seat 60 is easily collapsed and deformed in use or the upper groove b is seriously abraded, even fails; in this regard, the integrally molded capsule seat 60 construction is not suitable for high load, long term use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a capsule seat subassembly of high load long-life diaphragm pump to it is used for a long time to be fit for the high load, ensures that the transmission is normal, effective.

In order to achieve the above purpose, the solution of the present invention is:

the capsule seat subassembly of high load long-life diaphragm pump, constitute by capsule seat main part and axle sleeve, the axle sleeve is for the components of a whole that can function independently shaping with the capsule seat main part that is used for installing the utricule, the capsule seat main part forms the centre bore in central point department, the central line of centre bore is located the longitudinal axis of diaphragm pump, the axle sleeve fastening is installed in the centre bore of capsule seat main part, it supplies the upper end of transmission shaft to plant to form the upper groove on the axle sleeve, the central line of upper groove also is located the longitudinal axis of diaphragm pump, the oral area of upper groove is the toper horn mouth, the bottom is face of cylinder counter bore, the upper end contact of the inner wall confession.

The shaft sleeve is in a shape that the upper end is closed and the lower end forms an upper groove.

The inclined plane angle of the conical horn mouth is larger than the inclined angle of the transmission shaft.

The cylindrical surface counter bore of the shaft sleeve and the cambered surface at the transition part of the conical horn mouth are in contact with the upper end outer diameter part of the transmission shaft, and the upper end ball head surface of the transmission shaft crosses the cambered surface and extends into the cylindrical surface counter bore; the depth of the cylindrical surface counter bore is enough to ensure that the upper end ball head surface of the transmission shaft is not contacted with the bottom surface of the cylindrical surface counter bore.

The shaft sleeve is made of self-lubricating wear-resistant plastic materials such as POM and PEEK.

The capsule seat main body is made of high-temperature-resistant and high-strength plastic materials, such as PPA, PA and PC containing glass fibers.

The shaft sleeve is pressed into a central hole of the capsule seat main body in an interference fit mode.

The inner diameter of the central hole of the capsule seat main body is in a shape of being large at the top and small at the bottom, the middle of the inner diameter of the central hole is provided with a step, the outer diameter of the shaft sleeve is also in a shape of being large at the top and small at the bottom, the upper part of the shaft sleeve is provided with a convex wall, the convex wall is arranged on the step, the outer wall of the convex wall is in interference fit with the inner wall of the upper part of the central hole, and the shaft sleeve is fixedly arranged in the central.

After the scheme is adopted, the utility model discloses because with the axle sleeve components of a whole that can function independently shaping of bag seat main part and upper groove, fasten the installation again together, thus, different materials can be selected to bag seat main part and axle sleeve, for example, the material of axle sleeve optional self-lubricating and low coefficient of friction, high temperature resistant material can be selected to bag seat main part, thus, both can satisfy the problem of transmission shaft and upper groove (axle sleeve) wearability, guarantee the rigidity intensity of bag seat main part under the high pressure load in utricule compression expansion motion again, structural suitable high load is used for a long time, guarantee that the transmission is normal, it is effective, and, the cost of parts is lower overall.

Furthermore, the utility model discloses with the combination form of the upper groove design of axle sleeve for toper horn mouth and face of cylinder counter bore, can avoid the tip of transmission shaft to push up to die and cause the risk that load current risees.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is an exploded cross-sectional view of a prior art diaphragm pump;

FIG. 2 is an exploded cross-sectional view of the transmission of a prior art diaphragm pump;

fig. 3 is an exploded perspective view of the present invention;

fig. 4 is an exploded cross-sectional view of the present invention;

FIG. 5 is a sectional view of the diaphragm pump according to the present invention;

fig. 6 is a partial schematic view of fig. 5.

Description of the reference symbols

The capsule comprises a motor 10, a base 20, an eccentric wheel 30, a transmission shaft 40, a support frame 50, a capsule seat 60, a capsule body 70, a top cover 80, a lower groove a and an upper groove b;

the capsule seat comprises a capsule seat main body 1, a central hole 11, a step 12, a shaft sleeve 2, an upper groove 21, a conical horn mouth 22, a cylindrical surface counter bore 23, a convex wall 24, a transmission shaft 3, a capsule body 4, a longitudinal axis L, an arc surface C, an inclined plane angle alpha and an inclined angle beta.

Detailed Description

Referring to fig. 3 to 6, the capsule seat assembly of the high-load long-life diaphragm pump disclosed in the present invention comprises a capsule seat main body 1 and a shaft sleeve 2, wherein the capsule seat main body 1 is used for mounting a capsule 4, the shaft sleeve 2 and the capsule seat main body 1 are formed by split injection molding, a central hole 11 is formed at the central position of the capsule seat main body 1, the central line of the central hole 11 is located on the longitudinal axis L of the diaphragm pump, the shaft sleeve 2 is tightly mounted in the central hole 11 of the capsule seat main body 1, an upper groove 21 is formed on the shaft sleeve 2, the central line of the upper groove 21 is also positioned on the longitudinal axis L of the diaphragm pump, the upper groove 21 is used for inserting the upper end of the transmission shaft 3, the opening part of the upper groove 21 is a conical bell mouth 23, the bottom part is a cylindrical surface counter bore 24, the inner wall of the conical bell mouth 23 is used for contacting the upper end of the transmission shaft 3, and the rotating transmission shaft 3 is supported, so that the transmission shaft 3 can rotate smoothly.

The utility model discloses with 2 components of a whole that can function independently injection moulding of axle sleeve of capsule seat main part 1 and having upper groove 21, mode such as rethread interference fit is impressed axle sleeve 2 and is in the same place in the centre bore 11 of capsule seat main part 1, thus, different materials can be selected respectively to axle sleeve 2 and capsule seat main part 1, specifically, the wear-resisting and low friction coefficient's of axle sleeve 2 optional self-lubricating plastics material, such as POM, PEEK, capsule seat main part 1 can select the plastics material of high temperature resistant high strength, if contain fine PPA, PA, PC, the problem of wearability when both satisfying the upper groove 21 cooperation of transmission shaft 3 and axle sleeve 2, guarantee again capsule seat main part 1 rigid strength under the high pressure load in the 4 compression expansion movements of utricule, make the utility model discloses structurally be fit for a long time with the high load, guarantee that the transmission is normal, effective, and, in addition, the cost of spare.

The utility model discloses the preferred design of axle sleeve 2 is that axle sleeve 2's shape seals for the upper end, the lower extreme forms upper groove 21. Further, the best shape of the upper groove 21 of the shaft sleeve 2 is as follows: the angle of inclination a of the conical bell 22 is greater than the angle of inclination β of the drive shaft 3. After assembly, the cambered surface C at the transition of the cylindrical surface counter bore 23 and the conical bell mouth 22 of the shaft sleeve 2 is used for contacting the upper end outer diameter part of the transmission shaft 3 to play a supporting role, and the upper end ball head surface of the transmission shaft 3 crosses the cambered surface C and extends into the cylindrical surface counter bore 23; the depth of the cylindrical surface counterbore 23 is enough to ensure that the ball head surface at the upper end of the transmission shaft 3 does not contact the bottom surface of the cylindrical surface counterbore 23. Thus, the risk of the load current rising due to the dead end of the transmission shaft can be avoided.

In order to facilitate the assembly and firm combination of the capsule seat main body 1 and the shaft sleeve 2, the inner diameter of the central hole 11 of the capsule seat main body 1 is large at the top and small at the bottom, the middle of the central hole is provided with a step 12, the outer diameter of the shaft sleeve 2 is also large at the top and small at the bottom, the upper part of the shaft sleeve is provided with a convex wall 24, the convex wall 24 is arranged on the step 12, the outer wall of the convex wall 24 is in interference fit with the inner wall of the upper part of the central hole 11, and the shaft sleeve 2 is fixedly arranged in the central hole 11 of the capsule seat main body.

It should be noted that the utility model discloses a capsule seat subassembly can be applicable to as shown in this paper figure but not limited to in this paper figure's various diaphragm pump transmission, based on with capsule seat

main part

1 and 2 components of a whole that can function independently shaping refastenings of axle sleeve and installing together, make axle sleeve 2 and capsule seat main part 1 can select different materials respectively to satisfy the problem of wearability in the transmission, and guarantee the rigidity intensity under the high pressure load, increase of service life reduces manufacturing cost.

The above description is only the specific embodiments of the present invention, and is not intended to limit the scope of the present invention. It should be noted that after reading this description, those skilled in the art can make equivalent changes according to the design concept of the present application, which fall within the protection scope of the present application.

Claims

1. Capsule seat subassembly of long-life diaphragm pump of high load, its characterized in that: the rotary type capsule filling machine is composed of a capsule seat main body and a shaft sleeve, wherein the shaft sleeve and the capsule seat main body for installing a capsule body are formed in a split mode, the capsule seat main body forms a center hole in the center position, the center line of the center hole is located on the longitudinal axis of a diaphragm pump, the shaft sleeve is fixedly installed in the center hole of the capsule seat main body, an upper groove is formed in the shaft sleeve and used for inserting the upper end of a transmission shaft, the center line of the upper groove is also located on the longitudinal axis of the diaphragm pump, the opening portion of the upper groove is a conical horn mouth, the bottom of the upper groove is a cylindrical surface counter bore, and.

2. The bladder seat assembly of a high load long life diaphragm pump of claim 1 wherein: the shaft sleeve is in a shape that the upper end is closed and the lower end forms an upper groove.

3. The bladder seat assembly of a high load long life diaphragm pump of claim 1 wherein: the inclined plane angle of the conical horn mouth is larger than the inclined angle of the transmission shaft.

4. A bladder seat assembly for a high load long life diaphragm pump according to claim 3 wherein: the cylindrical surface counter bore of the shaft sleeve and the cambered surface at the transition part of the conical horn mouth are in contact with the upper end outer diameter part of the transmission shaft, and the upper end ball head surface of the transmission shaft crosses the cambered surface and extends into the cylindrical surface counter bore; the depth of the cylindrical surface counter bore is enough to ensure that the upper end ball head surface of the transmission shaft is not contacted with the bottom surface of the cylindrical surface counter bore.

5. The bladder seat assembly of a high load long life diaphragm pump of claim 1 wherein: the shaft sleeve is made of self-lubricating wear-resistant plastic materials.

6. The bladder seat assembly of a high load long life diaphragm pump of claim 5 wherein: the shaft sleeve is made of POM or PEEK.

7. The bladder seat assembly of a high load long life diaphragm pump of claim 1 wherein: the capsule seat main body is made of high-temperature-resistant and high-strength plastic materials.

8. The bladder seat assembly of a high load long life diaphragm pump of claim 7 wherein: the capsule seat main body is made of PPA, PA or PC materials containing glass fibers.

9. The bladder seat assembly of a high load long life diaphragm pump of claim 1 wherein: the shaft sleeve is pressed into a central hole of the capsule seat main body in an interference fit mode.

10. The bladder seat assembly of a high load long life diaphragm pump of claim 1 wherein: the inner diameter of the central hole of the capsule seat main body is in a shape of being large at the top and small at the bottom, the middle of the inner diameter of the central hole is provided with a step, the outer diameter of the shaft sleeve is also in a shape of being large at the top and small at the bottom, the upper part of the shaft sleeve is provided with a convex wall, the convex wall is arranged on the step, the outer wall of the convex wall is in interference fit with the inner wall of the upper part of the central hole, and the shaft sleeve is fixedly arranged in the central.