CN212774730U - Hollow plunger for diaphragm pump - Google Patents
Hollow plunger for diaphragm pump Download PDFInfo
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- CN212774730U CN212774730U CN202020556088.6U CN202020556088U CN212774730U CN 212774730 U CN212774730 U CN 212774730U CN 202020556088 U CN202020556088 U CN 202020556088U CN 212774730 U CN212774730 U CN 212774730U
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- shaft section
- plunger
- working shaft
- connecting shaft
- diaphragm pump
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Abstract
The utility model provides a hollow plunger for a diaphragm pump, which solves the problems of larger weight of the plunger in the existing diaphragm pump and inconvenient installation; the plunger easily wears and warp, causes sealing member life to shorten simultaneously, influences the problem of operating efficiency. The hollow plunger comprises a working shaft section and a connecting shaft section which are coaxially and fixedly connected, the diameter of the working shaft section is larger than that of the connecting shaft section, the working shaft section is provided with a cavity with an opening at the end face, and the opening of the cavity is provided with a plunger end socket for sealing the cavity; the outer end face of the plunger end socket is provided with at least 2 thread assembling holes; alloy materials are sprayed on the outer circular surface of the working shaft section; the plunger is provided with an exhaust hole communicated with the cavity, and the outlet of the exhaust hole is positioned at the joint of the working shaft section and the connecting shaft section. The working shaft section is of a cavity structure, the diameter of the connecting shaft section is smaller than that of the working shaft section, the self weight of the plunger is reduced, the motion inertia impact is reduced, and the service lives of the sealing element and the abrasion element are prolonged; alloy materials are sprayed on the outer circular surface of the working shaft section, so that the wear resistance of the plunger is enhanced.
Description
Technical Field
The utility model relates to a diaphragm pump technique, concretely relates to hollow plunger for diaphragm pump.
Background
In the diaphragm pump, the self rotary motion of the speed reducer is converted into the circular motion of a crank pin (the component part of the crankshaft) through the crankshaft, the circular motion of the crank pin is converted into the linear reciprocating motion of the crosshead through the connecting rod, and then the crosshead drives the plunger to reciprocate linearly.
The plunger weight is great in current diaphragm pump for the installation is not convenient, and the plunger is at reciprocating linear motion in-process, because the plunger dead weight for the plunger appears abnormal wearing and tearing and warp, causes the life of sealing member to shorten simultaneously, increases the overhaul of the equipments number of times, influences the whole operating efficiency of system.
SUMMERY OF THE UTILITY MODEL
The diaphragm pump aims to solve the problems that the existing diaphragm pump is large in plunger weight and inconvenient to install; the plunger easily wears and warp, causes sealing member life to shorten simultaneously, influences the technical problem of operating efficiency, the utility model provides a hollow plunger for diaphragm pump.
In order to achieve the above purpose, the utility model provides a technical scheme is:
a hollow plunger for a diaphragm pump is characterized in that: the plunger shaft comprises a working shaft section and a connecting shaft section which are coaxially and fixedly connected, wherein the diameter of the working shaft section is larger than that of the connecting shaft section, the working shaft section is provided with a cavity with an opening at the end face, and the opening of the cavity is provided with a plunger head for sealing the cavity;
the outer end face of the plunger end socket is provided with at least 2 thread assembling holes;
alloy materials are sprayed on the outer circular surface of the working shaft section;
and the plunger is provided with an exhaust hole communicated with the cavity, and the outlet of the exhaust hole is positioned at the joint of the working shaft section and the connecting shaft section.
Further, the outer end face of the connecting shaft section is of a spherical structure.
Furthermore, a threaded central hole is formed in the outer end face of the connecting shaft section;
the outer end face of the plunger end socket is also provided with 1 central taper hole.
Further, the spherical structure is a convex spherical structure.
Furthermore, a clamping ring groove is formed in the circumferential direction of one end, provided with a spherical structure, of the connecting shaft section.
Furthermore, the plunger head and the working shaft section are in threaded connection, and a sealing ring is arranged at the joint.
Furthermore, the working shaft section and the connecting shaft section are in smooth transition connection.
Compared with the prior art, the utility model has the advantages that:
1. the hollow plunger comprises a working shaft section and a connecting shaft section, the outer circular surface of the working shaft section is a working surface, the working shaft section can be designed into a cavity structure, and the diameter of the connecting shaft section is designed to be smaller than that of the working shaft section, so that the self weight of the plunger is reduced, the motion inertia impact is reduced, and the service life of a sealing element and a wear element is prolonged; alloy materials are sprayed on the outer circular surface of the working shaft section, so that the wear resistance of the plunger is enhanced; the threaded assembling hole in the plunger end socket facilitates the use of a tool for mounting and dismounting the plunger end socket.
2. The utility model discloses the outer terminal surface of connecting shaft section of hollow plunger can be the sphere, and this terminal surface is used for cooperating with the power end, can realize that plunger and power end (cross head) contact position are the sphere contact, if the plunger has the skew slightly with the position of cross head, can resume to the centering position fast through the sphere.
3. The utility model discloses hollow plunger can be at the outer terminal surface processing threaded centre bore of connecting shaft section, and the effect in this hole is first, can be when adding the excircle that adds the middle centre bore centering mill work shaft section man-hour, secondly can use eyebolt to install in the centre bore and lift by crane the plunger, the installation of being convenient for in the assembling process.
4. The utility model discloses can be equipped with the exhaust hole on the hollow plunger for the diaphragm pump, the heat that produces in the outer disc course of working of shaft section can be discharged through the exhaust hole of processing, guarantees that the course of working goes on safely.
5. The utility model discloses workable snap ring groove on the hollow plunger for diaphragm pump is convenient for install the snap ring in the snap ring groove, realizes axially spacingly when connecting plunger and cross head through the snap ring.
Drawings
Fig. 1 is a schematic structural view of a hollow plunger for a diaphragm pump according to the present invention;
wherein the reference numbers are as follows:
1-working shaft section, 11-cavity, 2-connecting shaft section, 21-spherical structure, 3-plunger end socket, 31-threaded assembly hole, 32-central taper hole, 4-sealing ring, 5-central hole, 6-lifting ring screw, 7-clamping ring groove and 8-exhaust hole.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in figure 1, a hollow plunger for a diaphragm pump, including coaxial working shaft section 1 and the connecting shaft section 2 that links firmly, the diameter of working shaft section 1 is greater than the diameter of connecting shaft section 2, and working shaft section 1 and connecting shaft section 2 are smooth transition connection, at the outer disc spraying alloy material of working shaft section 1, the wear resistance of spraying alloy material reinforcing plunger. The working shaft section 1 is provided with a cavity 11 with an opening at the end surface, and the opening of the cavity 11 is provided with a plunger end enclosure 3 for sealing the cavity 11; the plunger end socket 3 is in threaded connection with the working shaft section 1, and a sealing ring 4, specifically an O-shaped ring, is arranged at the joint. The plunger piston of the embodiment adopts a hollow structure, so that the self weight is reduced, the motion inertia impact is reduced, the service lives of the sealing element and the abrasion part are prolonged, and the times for replacing the sealing element and the abrasion part are correspondingly reduced.
The outer end face of the plunger end socket 3 is provided with at least 2 thread assembling holes 31 and 1 central taper hole 32; the 2 mountable frocks of screw thread pilot hole 31 are convenient for install and dismantle 3 in 11 openings of cavity of working shaft section 1 with plunger head through the frock.
Be equipped with on the plunger with the communicating exhaust hole 8 of cavity 11, the export of exhaust hole 8 is located working shaft section 1 and connecting shaft section 2 junction, can produce a large amount of heats when adding man-hour to the working shaft section 1 excircle face of plunger, accessible exhaust hole 8 is discharged the heat that produces in the course of working, guarantees that the course of working goes on safely.
Because the outer terminal surface of connecting shaft section 2 of current plunger processes the external screw thread, this external screw thread adopts the screw thread rigid connection with the internal thread of cross head. Can not make the axle center resume to concentric position fast automatically when the axle center skew takes place for connecting shaft section 2 and the cross head of plunger, the outer terminal surface of connecting shaft section 2 of this embodiment is convex spherical surface, this terminal surface be used for with the power end cooperation, can realize that plunger and power end (cross head) contact position are the sphere contact, if the plunger has the skew slightly with the position of cross head, can resume to centering position fast through the sphere.
The outer end face of the connecting shaft section 2 is provided with a threaded center hole 5, the center hole 5 can be used for centering and grinding the excircle of the working shaft section 1 during machining, and a lifting bolt 6 can be mounted in the center hole 5 to lift the plunger during assembly, so that the plunger is convenient to mount.
The clamping ring groove 7 is formed in the circumferential direction of the outer end face (the end with the spherical structure) of the connecting shaft section 2, a clamping ring is convenient to install in the clamping ring groove 7, and axial limiting is achieved when the plunger and the crosshead are connected through the clamping ring.
Meanwhile, the embodiment provides a processing method of the hollow plunger for the diaphragm pump, which comprises the following steps:
1) processing a plunger end socket 3, a working shaft section 1 and a connecting shaft section 2;
wherein, a plurality of thread assembling holes 31 which are uniformly distributed along the circumference are processed on the plunger end enclosure 3;
2) processing a cavity 11 on the outer end face of the working shaft section 1;
3) an exhaust hole 8 is processed at the joint of the working shaft section 1 and the connecting shaft section 2;
4) the plunger end enclosure 3 is sealed at the opening of the cavity 11;
5) processing process holes in the centers of the outer end face of the connecting shaft section 2 and the outer end face of the plunger end enclosure 3;
6) and (5) positioning by two process holes, and finely machining the outer cylindrical surface of the working shaft section 1.
7) A threaded central hole 5 is processed on the outer end surface of the connecting shaft section 2.
The above description is only for the preferred embodiment of the present invention, and the technical solution of the present invention is not limited thereto, and any known modifications made by those skilled in the art on the basis of the main technical idea of the present invention belong to the technical scope to be protected by the present invention.
Claims (7)
1. The utility model provides a hollow plunger for diaphragm pump which characterized in that: the sealing device comprises a working shaft section (1) and a connecting shaft section (2) which are coaxially and fixedly connected, wherein the diameter of the working shaft section (1) is larger than that of the connecting shaft section (2), the working shaft section (1) is provided with a cavity (11) with an opening at the end face, and the opening of the cavity (11) is provided with a plunger end enclosure (3) for sealing the cavity (11);
the outer end face of the plunger end enclosure (3) is provided with at least 2 thread assembling holes (31);
alloy materials are sprayed on the outer circular surface of the working shaft section (1);
the plunger is provided with an exhaust hole (8) communicated with the cavity (11), and the outlet of the exhaust hole (8) is positioned at the joint of the working shaft section (1) and the connecting shaft section (2).
2. The hollow plunger for a diaphragm pump according to claim 1, wherein: the outer end face of the connecting shaft section (2) is of a spherical structure (21).
3. The hollow plunger for a diaphragm pump according to claim 2, wherein: the outer end face of the connecting shaft section (2) is provided with a threaded central hole (5);
the outer end face of the plunger end socket (3) is also provided with 1 central taper hole (32).
4. The hollow plunger for a diaphragm pump according to claim 3, wherein: the spherical structure (21) is a convex spherical structure.
5. The hollow plunger for a diaphragm pump according to any one of claims 1 to 4, wherein: and a clamping ring groove (7) is formed in the circumferential direction of one end, provided with a spherical structure, of the connecting shaft section (2).
6. The hollow plunger for a diaphragm pump according to claim 5, wherein: plunger head (3) and working shaft section (1) adopt threaded connection, and the junction is equipped with sealing washer (4).
7. The hollow plunger for a diaphragm pump according to claim 6, wherein: the working shaft section (1) and the connecting shaft section (2) are in smooth transition connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020556088.6U CN212774730U (en) | 2020-04-15 | 2020-04-15 | Hollow plunger for diaphragm pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020556088.6U CN212774730U (en) | 2020-04-15 | 2020-04-15 | Hollow plunger for diaphragm pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212774730U true CN212774730U (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020556088.6U Active CN212774730U (en) | 2020-04-15 | 2020-04-15 | Hollow plunger for diaphragm pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212774730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502979A (en) * | 2020-04-15 | 2020-08-07 | 陕西航天动力高科技股份有限公司 | Hollow plunger for diaphragm pump and processing method |
-
2020
- 2020-04-15 CN CN202020556088.6U patent/CN212774730U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502979A (en) * | 2020-04-15 | 2020-08-07 | 陕西航天动力高科技股份有限公司 | Hollow plunger for diaphragm pump and processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230811 Address after: No. 67, South Section of Aerospace West Road, Aerospace Base, Xi'an City, Shaanxi Province, 710199 Patentee after: ACADEMY OF AEROSPACE PROPULSION TECHNOLOGY Patentee after: SHAANXI AEROSPACE POWER HIGH-TECH Co.,Ltd. Address before: 710077 No. 78, Kam Yip Road, hi tech Zone, Shaanxi, Xi'an Patentee before: SHAANXI AEROSPACE POWER HIGH-TECH Co.,Ltd. |
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| TR01 | Transfer of patent right |