CN220505301U - Screw pump device - Google Patents
Screw pump device Download PDFInfo
- Publication number
- CN220505301U CN220505301U CN202321865836.9U CN202321865836U CN220505301U CN 220505301 U CN220505301 U CN 220505301U CN 202321865836 U CN202321865836 U CN 202321865836U CN 220505301 U CN220505301 U CN 220505301U
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- screw pump
- block
- ceramic sleeve
- pump device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 54
- 239000000919 ceramic Substances 0.000 claims description 28
- 238000007599 discharging Methods 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000003292 glue Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 238000010073 coating (rubber) Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model relates to the technical field of fluid conveying devices, in particular to a screw pump device which can effectively prolong the service life of a transmission shaft and reduce the cost.
Description
Technical Field
The utility model relates to the technical field of fluid conveying devices, in particular to a screw pump device.
Background
Screw pumps are common devices for glue delivery in the glue industry. After the glue enters the pump body, the glue is continuously sent to the discharge hole by utilizing the matching of the rotor and the stator, the end part of the rotor is connected with the transmission shaft by the flexible shaft, the transmission shaft is connected with the driving mechanism consisting of the speed reducer and the motor, the transmission shaft is a rigid shaft, friction is generated between the transmission shaft and the sealing element in the rotating process, so that the abrasion of the outer surface is serious, the rotor and the transmission shaft are of an integral structure, the rotor is matched with the stator, the precision requirement is high, the processing cost is high, and the whole rotor is required to be replaced together when the transmission shaft is replaced at present, and the cost is high.
Disclosure of Invention
In order to solve the problems that an existing transmission shaft is easy to wear and high in replacement cost, the utility model provides a screw pump device which can effectively prolong the service life of the transmission shaft and reduce the cost.
The technical scheme is as follows: the utility model provides a screw pump device, its includes the pump body, be provided with feed inlet and discharge gate on the pump body, be provided with rotor and stator in the pump body, the rotor passes through flexible hub connection transmission shaft, actuating mechanism is connected to the transmission shaft, the rotor with when the stator is meshed the rotor is eccentric arrangement, its characterized in that, in the connecting block is inserted to transmission shaft one end and fixed connection, the connecting block with actuating mechanism connects, expose in the outside cover of transmission shaft part of connecting block has ceramic sleeve, ceramic sleeve outer wall and sealing member contact.
The novel transmission shaft is further characterized in that the ceramic sleeve is in clearance fit with the transmission shaft, a step surface is arranged on the outer surface of the transmission shaft, one end of the ceramic sleeve is propped against the step surface, the other end of the ceramic sleeve is pressed by a plastic block, the plastic block is clamped and embedded between the ceramic sleeve and the connecting block, and a sealing ring is arranged between the ceramic sleeve and the outer surface of the transmission shaft;
a counter bore is formed in one end of the connecting block, one end of the transmission shaft is inserted into the counter bore and fixedly connected with a bolt penetrating through the bottom of the counter bore, a plane is arranged on the side surface of the end part of the transmission shaft, and an anti-rotation block matched with the plane is arranged on the inner wall of the counter bore;
the driving mechanism comprises a motor and a speed reducer, and an output shaft of the speed reducer is connected with the connecting block through an elastic piece;
the elastic piece is a cylindrical body with four notches, the output shaft of the speed reducer is connected with a transmission block, and the connection block and the transmission block are respectively provided with a bump which is clamped into the notches;
the connecting surface of the driving mechanism and the pump body is provided with a circle of positioning holes and a single positioning column for matching;
the pump body comprises a feeding shell and a discharging shell which are fixedly connected, the feeding opening is formed in the side wall of the feeding shell and is provided with a feeding pipe, the discharging opening is formed in the bottom of the discharging shell, the stator is arranged in the discharging shell and comprises a discharging sleeve and a rubber lining, a positioning bayonet is formed in the outer wall of the discharging sleeve, and a positioning clamping block matched with the positioning bayonet is arranged at the bottom of the feeding shell;
the feeding shell is characterized in that a pressure detection port and a pressure relief port are formed in the side wall of the feeding shell, a pressure sensor is arranged at the pressure detection port, a pressure relief plug is arranged at the pressure relief port, and an inclined unloading groove is formed in the threaded end of the pressure relief plug.
After the utility model is adopted, one end of the transmission shaft is inserted into the connecting block and fixedly connected, the ceramic sleeve is sleeved outside the transmission shaft part exposed out of the connecting block, so that the outer wall of the ceramic sleeve is contacted with the sealing element, the transmission shaft is effectively protected, the abrasion is reduced, the service life is prolonged, only the ceramic sleeve is required to be replaced during maintenance, the transmission shaft and the rotor are not required to be replaced, and the maintenance cost is greatly reduced.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a front view of the present utility model;
FIG. 3 is a sectional view taken along the E-E direction in FIG. 2;
FIG. 4 is a schematic view of the structure of the elastic member;
FIG. 5 is a schematic diagram of a connection block structure;
FIG. 6 is a schematic view of a land pilot hole;
FIG. 7 is a schematic view of the cooperation of the positioning bayonet and the positioning fixture block;
fig. 8 is a schematic diagram of a pressure relief plug structure.
Detailed Description
See the fig. 1-8, a screw pump device, it includes pump body 1, is provided with feed inlet 2 and discharge gate 3 on the pump body 1, is provided with rotor 4 and stator 5 in the pump body 1, and rotor 4 passes through flexible axle 6 and connects transmission shaft 7, and rotor 4 is arranged eccentrically when rotor 4 intermeshes with inserting stator 5, and transmission shaft 7 one end inserts in connecting block 8 and fixed connection, and the specific mode is: the counter bore has been seted up to the one end of connecting block 8, and in the counter bore was inserted to transmission shaft 7 one end and the bolt fixed connection who runs through the counter bore bottom, the tip side of transmission shaft 7 was equipped with the plane, and the counter bore inner wall is equipped with the anti-rotation piece with plane complex, can prevent effectively that transmission shaft 7 and connecting block 8 from taking place relative rotation, ensures that connecting block 8 can drive transmission shaft 7 and rotate together. The connecting block 8 is connected with the driving mechanism, a ceramic sleeve 9 is sleeved outside a part of the transmission shaft 7 exposed out of the connecting block 8, the outer wall of the ceramic sleeve 9 is in contact with a sealing piece 10, the ceramic sleeve 9 replaces the transmission shaft 7 to rub the sealing piece, and after each abrasion, the ceramic sleeve 9 is only needed to be replaced.
The clearance fit between the ceramic sleeve 9 and the transmission shaft 7, the outer surface of the lower part of the transmission shaft 7 is provided with a step surface, one end of the ceramic sleeve 9 is propped against the step surface, the other end is tightly pressed by a plastic block 11, the plastic block 11 is clamped between the ceramic sleeve 9 and the connecting block 8, a sealing ring 12 is arranged between the ceramic sleeve 9 and the outer surface of the transmission shaft 7, the ceramic sleeve 9 is tightly clamped by the plastic block 11, the ceramic sleeve 9 and the transmission shaft 7 can synchronously rotate, and the ceramic sleeve 9 is convenient to replace.
The driving mechanism comprises a motor 13 and a speed reducer 14, and an output shaft of the speed reducer 14 is connected with the connecting block 8 through an elastic piece 15; in this embodiment, the elastic component is the cylinder body of taking four breach, adopts the standard part, is connected with transmission piece 16 on the output shaft of speed reducer 14, is provided with two lugs of card income four breach on connecting block 8 and the transmission piece 16 respectively, and two lugs on connecting block 8 and the transmission piece 16 are two double-phase to set up, and the appearance is unanimous with the breach, utilizes elastic component 15 to transmit the power between speed reducer 14 and the transmission shaft 7, can reduce rigidity stress, better assurance structure reliable stability.
The connecting surface of the driving mechanism and the pump body 1 is provided with a circle of positioning holes 25 matched with a single positioning column, so that the diversity of the installation direction of the motor can be met.
The pump body 1 includes fixed connection's feed casing 17 and ejection of compact casing 18, feed inlet 2 is offered in feed casing 17 lateral wall and is installed the inlet pipe, the discharge gate 3 is offered in ejection of compact casing 18 bottom, install stator 5 in the ejection of compact casing 18, stator 4 includes ejection of compact sleeve 19 and rubber inside lining, the integral structure that forms through the vulcanization of rubber inside lining and metallic ejection of compact sleeve 19, location bayonet socket 20 has been offered to ejection of compact sleeve 19 outer wall, feed casing 17 bottom is provided with location bayonet socket 20 complex location fixture block 21, can let stator 5 can not take place to rotate. The flexible shaft 6 is externally provided with a rubber coating layer, and the metal surfaces of the rotor 5 and the transmission shaft 7 and the connecting parts at the two ends of the flexible shaft 6 are subjected to sand blasting treatment, so that the adhesive force of the rubber coating can be increased, and the connection reliability is improved.
The pressure detection mouth and the pressure release mouth have been seted up to feed housing 17 lateral wall, and pressure detection mouth department is provided with pressure sensor 22, and pressure release mouth department installs pressure release end cap 23, and pressure release end cap 23's screw thread end has seted up inclined unloading groove 24, when exhausting feed inlet 2 of screw pump, the pressure in the pump body can release gradually along with the increase of unloading groove 24 aperture, can effectively avoid leading to the trouble of glue splash because of pressure release is opened suddenly to pressure release end cap 23 in the twinkling of an eye.
The working principle of the utility model is as follows: the motor 13 is connected with the speed reducer 14, the speed reducer 14 is connected with the rotor 4 through the elastic piece 15, the transmission shaft 7 and the flexible shaft 6, the stator 5 is fixed in the discharging shell 18, the motor 13 drives the rotor 4 to rotate circularly and continuously in the stator 5, and the rotor 4 can rotate continuously in the stator 5 due to the special spiral profile design of the stator 5 and the rotor 4, and a periodic closed cavity is formed, and the cavity moves to the discharging port 3 continuously along with the rotation of the rotor 4; since the rotor 4 is arranged eccentrically in the stator 5 and there is a flexible shaft 6, the actual movement of the rotor 4 is a planetary movement about the main axis: rotation and revolution. The above structure makes the medium of the feed inlet 2 be continuously conveyed to the discharge outlet 3 during the rotation of the rotor 4.
Claims (8)
1. The utility model provides a screw pump device, its includes the pump body, be provided with feed inlet and discharge gate on the pump body, be provided with rotor and stator in the pump body, the rotor passes through flexible hub connection transmission shaft, actuating mechanism is connected to the transmission shaft, the rotor with when the stator is meshed the rotor is eccentric arrangement, its characterized in that, in the connecting block is inserted to transmission shaft one end and fixed connection, the connecting block with actuating mechanism connects, expose in the outside cover of transmission shaft part of connecting block has ceramic sleeve, ceramic sleeve outer wall and sealing member contact.
2. The screw pump device according to claim 1, wherein the ceramic sleeve is in clearance fit with the transmission shaft, a step surface is arranged on the outer surface of the transmission shaft, one end of the ceramic sleeve abuts against the step surface, the other end of the ceramic sleeve is pressed by a plastic block, the plastic block is clamped between the ceramic sleeve and the connecting block, and a sealing ring is arranged between the ceramic sleeve and the outer surface of the transmission shaft.
3. The screw pump device according to claim 2, wherein a counter bore is formed in one end of the connecting block, one end of the transmission shaft is inserted into the counter bore and fixedly connected with a bolt penetrating through the bottom of the counter bore, a plane is formed on the side surface of the end of the transmission shaft, and an anti-rotation block matched with the plane is arranged on the inner wall of the counter bore.
4. A screw pump device according to claim 1, wherein the drive mechanism comprises a motor and a speed reducer, and an output shaft of the speed reducer is connected with the connecting block through an elastic member.
5. The screw pump device according to claim 4, wherein the elastic member is a cylindrical body with four notches, the output shaft of the speed reducer is connected with a transmission block, and the connection block and the transmission block are respectively provided with a bump which is clamped into the notch.
6. A screw pump apparatus according to claim 1, wherein the connection surface of the driving mechanism and the pump body is a circle of positioning holes and a single positioning column.
7. The screw pump device of claim 1, wherein the pump body comprises a feeding shell and a discharging shell which are fixedly connected, the feeding opening is formed in the side wall of the feeding shell and is provided with a feeding pipe, the discharging opening is formed in the bottom of the discharging shell, the stator is arranged in the discharging shell and comprises a discharging sleeve and a rubber lining, a positioning bayonet is formed in the outer wall of the discharging sleeve, and a positioning clamping block matched with the positioning bayonet is arranged at the bottom of the feeding shell.
8. The screw pump device of claim 7, wherein the side wall of the feed housing is provided with a pressure detection port and a pressure relief port, the pressure detection port is provided with a pressure sensor, the pressure relief port is provided with a pressure relief plug, and the threaded end of the pressure relief plug is provided with an inclined unloading groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321865836.9U CN220505301U (en) | 2023-07-17 | 2023-07-17 | Screw pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321865836.9U CN220505301U (en) | 2023-07-17 | 2023-07-17 | Screw pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220505301U true CN220505301U (en) | 2024-02-20 |
Family
ID=89866851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321865836.9U Active CN220505301U (en) | 2023-07-17 | 2023-07-17 | Screw pump device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220505301U (en) |
-
2023
- 2023-07-17 CN CN202321865836.9U patent/CN220505301U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |