CN217594867U

CN217594867U - Centrifuge volute

Info

Publication number: CN217594867U
Application number: CN202220819772.8U
Authority: CN
Inventors: 孙云山
Original assignee: Qingdao Yunhe Machinery Manufacturing Co ltd
Current assignee: Qingdao Yunhe Machinery Manufacturing Co ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-10-18
Anticipated expiration: 2032-04-11

Abstract

The utility model relates to a centrifuge technical field just discloses a centrifuge spiral case, including the spiral case body, one side middle part of spiral case body is provided with opening and demountable installation has the protective cover, the mid-mounting of protective cover has the ventilation pipe that is linked together with spiral case body inner chamber, be provided with location structure on the protective cover, location structure's quantity is four and is the periphery of annular symmetric distribution at the ventilation pipe, the protective cover passes through location structure and spiral case body joint, the lower surface mounting of protective cover has external thread pipe, install on the inner wall of spiral case body and be located opening outlying internal thread pipe, the external thread pipe is kept away from the one end of protective cover and is passed opening and internal thread threaded connection. The utility model has the advantages of simple integral structure, the dismouting step is simple and clear, need not frequently to twist and moves the bolt, is favorable to improving the inspection efficiency of centrifuge stator, overhauls and maintains for in-service use, later stage and brings the facility.

Description

Centrifuge volute

Technical Field

The utility model relates to a centrifuge technical field specifically is a centrifuge spiral case.

Background

The centrifugal machine drives the impeller of the main shaft of the compressor to rotate through the motor, gas is thrown into the diffuser under the action of centrifugal force, a thin zone is formed in the middle of the working wheel, the gas in the front enters the impeller from the gas inlet part in the middle of the working wheel, and the gas is continuously thrown out due to continuous rotation of the working wheel, so that the continuous flow of the gas in the gas compressor is maintained. The gas increases pressure due to centrifugal action, leaves the working wheel at a high speed, gradually reduces the speed through the diffuser, and the kinetic energy is converted into static pressure energy to further increase the pressure.

Centrifuge spiral case is the outside protection and the wind-guiding structure that sets up of centrifuge, and centrifuge need open the spiral case before using and inspect the stator of inside, and current centrifuge spiral case mostly divide into the spiral case body and install the protective cover on the spiral case, and the protective cover generally is through a plurality of bolt fastening on the spiral case body, and the dismouting step is loaded down with trivial details, has reduced the inspection efficiency of centrifuge stator, for in-service use, later stage overhaul and maintenance bring inconvenience, for this reason, we propose a centrifuge spiral case.

SUMMERY OF THE UTILITY MODEL

In view of the above problems existing in the prior art, the utility model provides a centrifuge spiral case.

In order to realize the above-mentioned purpose, the utility model provides a pair of centrifuge spiral case, including the spiral case body, one side middle part of spiral case body is provided with the opening and demountable installation has the protective cover, the mid-mounting of protective cover has the ventilation pipe that is linked together with spiral case body inner chamber, be provided with location structure on the protective cover, location structure's quantity is four and is the periphery of annular symmetric distribution at the ventilation pipe, the protective cover passes through location structure and spiral case body joint, the lower surface mounting of protective cover has the external screw thread pipe, install on the inner wall of spiral case body and be located the peripheral internal thread pipe of opening, the external screw thread pipe is kept away from the one end of protective cover and is passed the opening and with internal thread pipe thread threaded connection.

Preferably, location structure includes pull rod, handle, reference column and spring, the lower surface of protective cover is seted up with four corresponding recesses of location structure, the pull rod activity sets up in the recess, the one end of pull rod run through and extend to the top of protective cover and with handle fixed connection, the other end and the reference column fixed connection of pull rod, the other end of reference column and the outer wall joint of spiral case body, spring movable sleeve dress is on the pull rod, and the both ends of spring respectively with the upper surface of reference column and the top inner wall fixed connection of recess.

Preferably, the volute body is provided with positioning holes on the periphery of the opening, the number of the positioning holes is four, the positioning holes are symmetrically distributed in an annular shape, one end of each positioning column, which is far away from the pull rod, is tightly inserted into the positioning holes, and the cross sections of the positioning holes and the positioning columns are regular hexagons.

Preferably, the top of protective cover is seted up the trepanning that is linked together with the recess, the top of pull rod passes the trepanning and with the inner wall sliding connection of trepanning.

Preferably, the top outer wall of external screw thread pipe closely overlaps and is equipped with the sealing washer, the sealing washer sets up between spiral case body and protective cover.

Compared with the prior art, the utility model provides a centrifuge spiral case has following beneficial effect:

the utility model discloses a threaded connection between external screw thread pipe and the internal thread pipe, be convenient for install the protective cover at the opening part of spiral case body fast and stably, the joint of four location structure and spiral case body that set up on the rethread protective cover, be favorable to improving the assembly compactness of protective cover and spiral case body, it shifts up to drive pull rod and reference column through the handle, make the spring extruded and take place elastic deformation, utilize elastic deformation's effort, be convenient for the elastic joint between location structure and the spiral case body, thereby conveniently carry out the dismouting to the protective cover, overall structure is simple, the dismouting step is simple and clear, need not frequently to twist the bolt, be favorable to improving the checking efficiency of centrifuge stator, for in-service use, later stage maintenance and maintenance bring facility, wide market prospect has, do benefit to the popularization.

Drawings

Fig. 1 is a front schematic structural view of the present invention;

fig. 2 is a schematic view of the mounting structure of the protective cover of the present invention;

FIG. 3 is a schematic view of the positioning structure of the present invention;

fig. 4 is a schematic view of the positioning hole structure of the present invention.

In the figure: 1. a volute body; 2. a protective cover; 3. a vent pipe; 4. a positioning structure; 5. an externally threaded tube; 6. an internally threaded tube; 7. positioning holes; 8. a seal ring; 41. a pull rod; 42. a handle; 43. a positioning column; 44. a spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure.

The structure, proportion, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people skilled in the art, and are not used for limiting the limit conditions of the present invention, so that the present invention does not have the essential significance in technology, and the modification of any structure, the change of proportion relation or the adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

Referring to fig. 1-4, a centrifuge volute comprises a volute body 1, an opening is formed in the middle of one side of the volute body 1, a protective cover 2 is detachably mounted on the middle of the volute body 1, a ventilation pipe 3 communicated with the inner cavity of the volute body 1 is mounted in the middle of the protective cover 2, positioning structures 4 are arranged on the protective cover 2, the four positioning structures 4 are symmetrically distributed on the periphery of the ventilation pipe 3 in an annular mode, the protective cover 2 is clamped with the volute body 1 through the positioning structures 4, an external threaded pipe 5 is mounted on the lower surface of the protective cover 2, an internal threaded pipe 6 located on the periphery of the opening is mounted on the inner wall of the volute body 1, and one end, far away from the protective cover 2, of the external threaded pipe 5 penetrates through the opening and is in threaded connection with the internal threaded pipe 6.

The positioning structure 4 comprises a pull rod 41, a handle 42, a positioning column 43 and a spring 44, a groove corresponding to the four positioning structures 4 is formed in the lower surface of the protective cover 2, the pull rod 41 is movably arranged in the groove, one end of the pull rod 41 penetrates through and extends to the upper side of the protective cover 2 and is fixedly connected with the handle 42, the other end of the pull rod 41 is fixedly connected with the positioning column 43, the other end of the positioning column 43 is clamped with the outer wall of the volute body 1, the spring 44 is movably sleeved on the pull rod 41, two ends of the spring 44 are respectively fixedly connected with the upper surface of the positioning column 43 and the inner wall of the top of the groove, the pull rod 41 and the positioning column 43 are driven by the handle 42 to move upwards, the spring 44 is extruded to generate elastic deformation, the elastic deformation by utilizing the acting force of the elastic deformation, the elastic clamping between the positioning column 43 and the volute body 1 is convenient, when the protective cover 2 needs to be disassembled, the handle 42 needs to be pulled upwards, so that the positioning column 43 is drawn out from the volute body 1, then the protective cover 2 rotates reversely, the outer threaded pipe 5 rotates from the inner threaded pipe 6, the protective cover 2 can be disassembled, the operation is simple and clear, the guide vane assembling and the guide vane assembling efficiency can be improved, and the guide vane assembling efficiency can be improved.

Locating holes 7 located on the periphery of the opening are formed in the upper surface of the volute body 1, the number of the locating holes 7 is four, the locating holes 7 are distributed in an annular symmetrical mode, one end, away from the pull rod 41, of the locating column 43 is tightly inserted into the locating holes 7, the cross sections of the locating holes 7 and the cross sections of the locating columns 43 are regular hexagons, and clamping stability can be improved when the locating columns 43 are clamped with the volute body 1 conveniently.

The top of the protective cover 2 is provided with a trepan boring communicated with the groove, the top end of the pull rod 41 penetrates through the trepan boring and is in sliding connection with the inner wall of the trepan boring, and the handle 42 can drive the pull rod 41 and the positioning column 43 to slide up and down conveniently.

The top outer wall of external screw pipe 5 closely overlaps and is equipped with sealing washer 8, and sealing washer 8 sets up between spiral case body 1 and protective cover 2, is favorable to improving the assembly compactness between protective cover 2 and the spiral case body 1 to improve the leakproofness of junction, avoid the emergence of phenomenon of leaking out.

The utility model discloses a threaded connection between external thread pipe 5 and internal thread pipe 6, be convenient for install protective cover 2 at spiral case body 1's opening part fast and steadily, four location structure 4 that set up on the rethread protective cover 2 and spiral case body 1's joint, be favorable to improving protective cover 2 and spiral case body 1's assembly compactness, it shifts up to drive pull rod 41 and reference column 43 through handle 42, make spring 44 extruded and take place elastic deformation, utilize elastic deformation's effort, be convenient for the elastic joint between location structure 4 and the spiral case body 1, thereby conveniently carry out the dismouting to protective cover 2, the overall structure is simple, the dismouting step is simple and clear, need not frequently to twist and move the bolt, be favorable to improving the inspection efficiency of centrifuge stator, for in-service use, later stage overhauls and maintains and brings the facility, wide market prospect has, do benefit to the popularization.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the present invention, the scope of which is defined by the appended claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. The utility model provides a centrifuge spiral case, includes spiral case body (1), one side middle part of spiral case body (1) is provided with opening and demountable installation has protective cover (2), the mid-mounting of protective cover (2) has ventilation pipe (3) that are linked together with spiral case body (1) inner chamber, a serial communication port, be provided with location structure (4) on protective cover (2), the quantity of location structure (4) is four and is annular symmetric distribution in the periphery of ventilation pipe (3), protective cover (2) are through location structure (4) and spiral case body (1) joint, the sub-surface mounting of protective cover (2) has outer threaded pipe (5), install on the inner wall of spiral case body (1) and be located opening outlying internal thread pipe (6), the one end that protective cover (2) were kept away from in outer threaded pipe (5) passes the opening and with internal threaded pipe (6) threaded connection.

2. The spiral casing of the centrifuge according to claim 1, wherein the positioning structure (4) includes a pull rod (41), a handle (42), a positioning column (43) and a spring (44), a groove corresponding to the four positioning structures (4) is formed in a lower surface of the protecting cover (2), the pull rod (41) is movably disposed in the groove, one end of the pull rod (41) penetrates through and extends above the protecting cover (2) and is fixedly connected with the handle (42), the other end of the pull rod (41) is fixedly connected with the positioning column (43), the other end of the positioning column (43) is clamped with an outer wall of the spiral casing body (1), the spring (44) is movably sleeved on the pull rod (41), and two ends of the spring (44) are fixedly connected with an upper surface of the positioning column (43) and an inner wall of the top of the groove respectively.

3. The spiral casing of the centrifugal machine according to claim 2, wherein the spiral casing body (1) is provided with positioning holes (7) on the periphery of the opening, the number of the positioning holes (7) is four and is distributed annularly and symmetrically, one end of the positioning column (43) far away from the pull rod (41) is tightly inserted into the positioning holes (7), and the cross sections of the positioning holes (7) and the positioning column (43) are regular hexagons.

4. The spiral casing of a centrifuge as claimed in claim 2, wherein the top of the protecting cover (2) is provided with a hole communicating with the groove, and the top end of the pull rod (41) passes through the hole and is slidably connected to the inner wall of the hole.

5. The centrifuge volute according to claim 1, wherein the outer threaded pipe (5) is tightly sleeved with a sealing ring (8) on the top outer wall, and the sealing ring (8) is disposed between the volute body (1) and the protecting cover (2).