CN219366308U - Miniature single screw pump - Google Patents
Miniature single screw pump Download PDFInfo
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- CN219366308U CN219366308U CN202320604489.8U CN202320604489U CN219366308U CN 219366308 U CN219366308 U CN 219366308U CN 202320604489 U CN202320604489 U CN 202320604489U CN 219366308 U CN219366308 U CN 219366308U
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- screw pump
- single screw
- rotor
- coupler
- miniature single
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Abstract
The utility model relates to a miniature single-screw pump, belonging to the technical field of single-screw pumps, comprising a motor, wherein the motor is connected with an inlet cavity through a coupler and a direct connection frame in sequence, an eccentric transmission mechanism coaxial with the coupler is arranged in the inlet cavity, one end of the inlet cavity, which is far away from the coupler, is connected with an outlet short circuit, and then one end of the eccentric transmission mechanism is clamped and positioned.
Description
Technical Field
The utility model relates to the technical field of single-screw pumps, in particular to a miniature single-screw pump.
Background
The single screw pump is one kind of internal engaged eccentric rotary positive displacement pump, and its main working parts consist of stator with double-head spiral cavity and meshed rotor.
In the prior art, single screw pumps gradually develop towards high pressure large flow and miniature series, but no matter how changes, because the operation principle of the single screw pump, the rotor performs planetary operation (non-coaxial operation, the track is eccentric operation) in the stator, so universal joints are needed between the transmission shaft and the rotor to provide eccentric force, and the layout of the traditional single screw pump is as follows: the driving end (transmission shaft), the universal joint and the stator and rotor of the pump are all arranged on one axis, so that the structural length of the single-screw pump is often much longer than that of other pumps, the use of the single-screw pump under specific working conditions is severely restricted, and particularly under the condition of space limitation, such as the ship industry and the like, the existing single-screw pump is often difficult to arrange due to the fact that the size is long.
The patent of publication No. CN218407789U discloses a prevent single screw pump of jam, including base frame, chassis and tee bend, install the universal joint in the tee bend, the top sliding connection of base frame inside has the chassis, and the below of base frame inside is provided with shock-absorbing structure, and one side fixed mounting on chassis top has the stator bucket, and the filling tube is installed on the top of tee bend, and the bearing frame is installed to one side of tee bend, and the motor is installed to one side of bearing frame. The whole single-screw pump is still of a traditional single-screw pump structure, and a universal joint is needed to provide eccentric force, so that the whole single-screw pump is longer in length, and the use of the whole single-screw pump is limited by scenes.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the miniature single-screw pump, which breaks through the design that the traditional single-screw pump adopts a universal joint to provide eccentric force, and can shorten the length of the whole pump by more than half on the premise of meeting the performance, thereby greatly reducing the manufacturing cost of the pump and improving the market competitiveness of the pump under the space-limited working condition.
In order to achieve the above purpose, the technical scheme adopted by the utility model for solving the technical problems is as follows: the miniature single-screw pump comprises a motor, wherein the motor is connected with an inlet cavity through a coupler and a direct connection frame in sequence, an eccentric transmission mechanism coaxial with the coupler is arranged in the inlet cavity, and one end of the inlet cavity, which is far away from the coupler, is connected with an outlet short circuit and then clamps and positions one end of the eccentric transmission mechanism.
The eccentric transmission mechanism comprises a transmission shaft connected with the coupler, the transmission shaft is coaxially connected with the rotor, and a stator formed by rubber vulcanization is sleeved outside the rotor.
A material conveying channel in spiral running fit with the rotor is arranged in the stator, one end, far away from the coupler, of the material conveying channel is provided with a material discharging channel communicated with the material conveying channel, and the aperture of the material discharging channel is larger than that of the material conveying channel; the material conveying channel is connected with the material discharging channel through a conical flaring channel.
The stator comprises a conical section extending into the inlet cavity, and the outer diameter of one end of the conical section close to the coupler is smaller than that of one end far away from the coupler.
The stator is kept away from the one end of shaft coupling is provided with the joint boss, joint boss joint location is in between import cavity and the export short circuit.
The inlet cavity is fixedly connected with the outlet short circuit in a clamping way to form an annular groove matched with the clamping convex table in a clamping way.
The shaft seal assembly is arranged on the transmission shaft and is arranged at the joint between the inlet cavity and the coupler, and one end, away from the shaft seal assembly, of the transmission shaft is coaxially connected with the rotor through a fastener.
The fastener comprises a connecting sleeve, an internal threaded hole is formed in the connecting sleeve, one end of the internal threaded hole is in threaded connection with the transmission shaft, and the other end of the internal threaded hole is in threaded connection with the rotor.
Two feed inlets are arranged on the inlet cavity.
The beneficial effects of the utility model are as follows:
1. the single-screw pump provided by the utility model cancels the design that a traditional single-screw pump adopts a universal joint to provide rotor eccentricity, adopts a novel eccentric transmission mechanism, is arranged in an inlet cavity, clamps and positions a stator of the eccentric transmission mechanism in a mode of clamping an inlet cavity and an outlet short circuit, the stator is formed by rubber vulcanization, and the eccentric force of the rotor running in the stator is provided by the suspension installation of the stator and the flexibility of the stator manufacturing material rubber.
2. According to the utility model, as the universal joint is eliminated, the rotor is connected with the transmission shaft through the fastener, and the stator and the rotor are accommodated through the inlet cavity, the structure of the whole single-screw pump is simpler, and the installation and the disassembly are more convenient and faster; through design two feed inlets on the import cavity, can connect two feed lines, also can select one feed inlet at random, make the feeding mode more nimble.
Drawings
The contents of the drawings and the marks in the drawings of the present specification are briefly described as follows:
FIG. 1 is a schematic view of the external structure of the present utility model;
FIG. 2 is a full cross-sectional view of the inlet chamber and outlet nipple of FIG. 1;
the labels in the above figures are: 1. the motor, 2, the direct connection frame, 3, the inlet cavity, 31, the feed inlet, 4, the transmission shaft, 5, the rotor, 6, the stator, 61, the material conveying channel, 62, the material discharging channel, 63, the conical flaring channel, 64, the conical section, 65, the clamping boss, 7, the annular groove, 8, the shaft seal component, 9, the fastener, 10 and the outlet short circuit.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The specific embodiment of the utility model is as follows: as shown in fig. 1 and 2, a miniature single-screw pump comprises a motor 1, wherein the motor 1 can be designed as a speed reducing motor 1, the motor 1 is connected with an inlet cavity 3 through a coupler and a direct connection frame 2 in sequence, an eccentric transmission mechanism coaxial with the coupler is arranged in the inlet cavity 3, and one end of the inlet cavity 3 far away from the coupler is connected with an outlet short circuit 10 and then clamps and positions one end of the eccentric transmission mechanism. The single-screw pump cancels the eccentric design of the rotor 5 provided by the universal joint, adopts a novel eccentric transmission mechanism, is arranged in the inlet cavity 3, clamps and positions one end of the eccentric transmission mechanism in a clamping mode of the inlet cavity 3 and the outlet short circuit 10, has more compact size on the premise of meeting the performance, greatly reduces the manufacturing cost of the pump, and improves the market competitiveness of the pump arranged under the space-limited working condition.
Specifically, the eccentric transmission mechanism comprises a transmission shaft 4 connected with a coupling, the transmission shaft 4 is coaxially connected with a rotor 5, a stator 6 formed by rubber vulcanization is sleeved outside the rotor 5, the stator 6 is clamped and positioned after the inlet cavity 3 is connected with an outlet short circuit 10, and the eccentric force of the rotor 5 running in the stator 6 can be provided through the suspension installation of the stator 6 and the flexibility of the stator 6 for manufacturing material rubber, so that the material conveying requirement of a single screw pump can be met.
The stator 6 is internally provided with a material conveying channel 61 in spiral rotation fit with the rotor 5, the matching structure between the material conveying channel 61 and the rotor 5 is of an existing structure, details are not repeated here, one end, far away from the coupler, of the material conveying channel 61 is provided with a material discharging channel 62 communicated with the material conveying channel, the aperture of the material discharging channel 62 is larger than that of the material conveying channel 61, the material conveying channel 61 is connected with the material discharging channel 62 through a conical flaring channel 63, the pressure at a material outlet is reduced, and the problem that materials are accumulated and blocked at a material outlet is avoided.
The stator 6 comprises a conical section 64 extending into the inlet cavity 3, the outer diameter of one end of the conical section 64 close to the coupler is smaller than that of one end far away from the coupler, flexibility of the stator 6 is improved, and when the rotor 5 is driven by the motor 1 to rotate, eccentric force of the rotor 5 running in the stator 6 can be provided, so that smooth material conveying is ensured.
One end of the stator 6 far away from the coupler is provided with a clamping boss 65, the inlet cavity 3 is fixedly connected with the outlet short circuit 10 through bolts after being clamped and connected, an annular groove 7 matched with the clamping boss 65 is formed after the inlet cavity 3 is connected with the outlet short circuit 10, the clamping boss 65 is clamped and positioned in the annular groove 7 between the inlet cavity 3 and the outlet short circuit 10, the suspension installation of the stator 6 is realized, the problem that the stator 6 is separated is prevented, and the eccentric force required by material conveying is also provided.
Specifically, the shaft seal component 8 is arranged on the transmission shaft 4, and the shaft seal component 8 is arranged at the joint between the inlet cavity 3 and the coupling, so that the sealing effect is achieved, and the problem that materials leak out from the joint between the inlet cavity 3 and the coupling is avoided.
One end of the transmission shaft 4, which is far away from the shaft seal assembly 8, is coaxially connected with the rotor 5 through a fastener 9, the fastener 9 comprises a connecting sleeve, an internal threaded hole is arranged in the connecting sleeve, one end of the internal threaded hole is in threaded connection with the transmission shaft 4, and the other end of the internal threaded hole is in threaded connection with the rotor 5. In order to ensure the connection firmness, positioning pins can be arranged at the two ends of the fastening piece 9 along the radial direction, and the rotor 5 and the transmission shaft 4 are further limited and fixed through the positioning pins, so that the rotor 5 is prevented from loosening in the rotating process.
The length of the inlet cavity 3 is shortened by more than half compared with that of a single screw pump with a conventional structure of the same specification. In addition, two feeding ports 31 are arranged on the inlet cavity 3, two feeding pipelines can be externally connected, and one feeding port 31 can be randomly selected, so that the feeding mode is more flexible.
The working principle of the miniature single screw pump is as follows: the material is injected into the inlet cavity 3 through the feed inlet 31, the motor 1 is started, the motor 1 drives the transmission shaft 4 to rotate through the coupler, so that the rotor 5 is driven to synchronously rotate, the stator 6 is processed by rubber materials and is suspended and installed at the same time of rotating the rotor 5, the stator 6 has certain flexibility, the stator 6 swings relative to the rotor 5, the eccentric force of the rotor 5 running in the stator 6 is provided, the material enters the space between the stator 6 and the rotor 5, the rotor 5 rotates in the stator 6 while rotating, the forward driving force of the material is provided, the material enters the discharge channel 62 through the material conveying channel 61, and flows to the discharge port of the outlet short circuit 10 through the discharge channel 62, so that the smooth conveying of the material is realized.
The installation method of the miniature single-screw pump comprises the following steps:
step 1: mounting a motor 1 and a coupler: the motor 1 and the positioning coupler are arranged on the frame, so that the output shaft of the motor 1 is connected with the transmission shaft 4 through the coupler.
Step 2: installing an inlet cavity 3: a shaft seal assembly 8 is arranged at one end of the transmission shaft 4, so that one end of the inlet cavity 3 is connected with the coupling in a sealing way through the shaft seal assembly 8.
Step 3: installing an eccentric transmission mechanism: the stator 6 is sleeved outside the rotor 5 in a spiral way, the stator 6 provided with the rotor 5 extends into the inlet cavity 3, and the extending end of the rotor 5 is fixedly connected with one end, far away from the shaft seal assembly 8, of the transmission shaft 4 through a fastener 9.
Step 4: installing an outlet short circuit 10: after the outlet short circuit 10 is connected with one end of the inlet cavity 3, which is far away from the coupler, one end of the stator 6 is clamped and positioned, and the outlet short circuit 10 is fixedly connected with the inlet cavity 3 through bolts.
In summary, the single-screw pump designed by the utility model has a simple and compact structure, breaks through the design that the traditional single-screw pump adopts a universal joint to provide eccentric force, shortens the length of the whole pump by more than half on the premise of meeting the performance, greatly reduces the manufacturing cost of the pump, and improves the market competitiveness of the pump under the space-limited working condition.
The foregoing is provided by way of illustration of the principles of the present utility model, and is not intended to be limited to the specific constructions and applications illustrated herein, but rather to all modifications and equivalents which may be utilized as fall within the scope of the utility model as defined in the claims.
Claims (10)
1. The utility model provides a miniature single screw pump, its characterized in that includes the motor, the motor links to each other with the import cavity through shaft coupling, directly allies oneself with the frame in proper order, install in the import cavity with the coaxial eccentric drive mechanism of shaft coupling, the import cavity is kept away from after the one end of shaft coupling links to each other with the export short circuit with the one end clamp of eccentric drive mechanism is tight location.
2. The miniature single screw pump of claim 1, wherein: the eccentric transmission mechanism comprises a transmission shaft connected with the coupler, the transmission shaft is coaxially connected with the rotor, and a stator formed by rubber vulcanization is sleeved outside the rotor.
3. The miniature single screw pump of claim 2, wherein: the stator is internally provided with a material conveying channel in spiral running fit with the rotor, one end, far away from the coupler, of the material conveying channel is provided with a material discharging channel communicated with the material conveying channel, and the aperture of the material discharging channel is larger than that of the material conveying channel.
4. A miniature single screw pump according to claim 3, wherein: the material conveying channel is connected with the material discharging channel through a conical flaring channel.
5. The miniature single screw pump of claim 2, wherein: the stator comprises a conical section extending into the inlet cavity, and the outer diameter of one end of the conical section close to the coupler is smaller than that of one end far away from the coupler.
6. The miniature single screw pump of claim 2, wherein: the stator is kept away from the one end of shaft coupling is provided with the joint boss, joint boss joint location is in between import cavity and the export short circuit.
7. The miniature single screw pump of claim 6, wherein: the inlet cavity is fixedly connected with the outlet short circuit in a clamping way to form an annular groove matched with the clamping convex table in a clamping way.
8. The miniature single screw pump of claim 2, wherein: the shaft seal assembly is arranged on the transmission shaft and is arranged at the joint between the inlet cavity and the coupler, and one end, away from the shaft seal assembly, of the transmission shaft is coaxially connected with the rotor through a fastener.
9. The miniature single screw pump of claim 8, wherein: the fastener comprises a connecting sleeve, an internal threaded hole is formed in the connecting sleeve, one end of the internal threaded hole is in threaded connection with the transmission shaft, and the other end of the internal threaded hole is in threaded connection with the rotor.
10. The miniature single screw pump of claim 1, wherein: two feed inlets are arranged on the inlet cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320604489.8U CN219366308U (en) | 2023-03-24 | 2023-03-24 | Miniature single screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320604489.8U CN219366308U (en) | 2023-03-24 | 2023-03-24 | Miniature single screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219366308U true CN219366308U (en) | 2023-07-18 |
Family
ID=87139009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320604489.8U Active CN219366308U (en) | 2023-03-24 | 2023-03-24 | Miniature single screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219366308U (en) |
-
2023
- 2023-03-24 CN CN202320604489.8U patent/CN219366308U/en active Active
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