CN213360383U

CN213360383U - Lifting type linear single-tube pump

Info

Publication number: CN213360383U
Application number: CN202021879615.3U
Authority: CN
Inventors: 阳波; 刘振; 陶海军; 施俊; 陈智隆
Original assignee: Hunan Zhixian Technology Co ltd
Current assignee: Hunan Zhixian Technology Co ltd; Hunan Zenithsun Technology Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-06-04
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses an over-and-under type straight line single tube pump, include: the device comprises a lifting driving assembly, a linear reciprocating assembly, an elastic hose, a closure assembly and a pump body assembly; the linear reciprocating assembly and the elastic hose are arranged in the pump body in a penetrating manner; the intercepting component is used for clamping and loosening the elastic hose; one end of the linear reciprocating assembly is connected with the lifting driving assembly, and the other end of the linear reciprocating assembly is connected with at least one group of roller assemblies; the lifting driving assembly is used for driving the linear reciprocating assembly to do lifting linear motion so as to drive the roller assembly to move and extrude or loosen the elastic hose. The utility model discloses an over-and-under type straight line single tube pump has compact structure, simple, the measurement accuracy is stable, hose long service life, advantage such as the pollution risk is little.

Description

Lifting type linear single-tube pump

Technical Field

The utility model mainly relates to a peristaltic pump technical field especially relates to an over-and-under type straight line single tube pump.

Background

Peristaltic pumps act like a finger pinching a fluid-filled hose, and as the finger slides forward, the fluid moves forward in the tube. Except that in the hose pump, the fingers are replaced by rollers. The flexible conveying hose in the peristaltic pump is alternately extruded and released to pump fluid, the roller extrudes the flexible conveying hose and rotates like the hose is squeezed by two fingers, a positive pressure cavity and a negative pressure cavity are formed in the flexible conveying hose, and the fluid flows and is discharged along with the flexible conveying hose. The peristaltic pump has the advantages of no pollution, strong self-absorption capability, simple structure, better accuracy and the like, and is widely applied to various industries, including the chemical industry, the pharmaceutical industry, the food filling industry and the like.

In the existing peristaltic pump, there are also the following problems:

1. when the peristaltic pump is filled, the roller extrudes the elastic hose and rotates, and the roller is in direct contact with the outer pipe wall of the elastic hose, so that the outer pipe wall of the elastic hose is greatly abraded, and the service life of the hose is shortened.

2. When the peristaltic pump is used for filling, the roller needs to be completely compressed and roll in the direction when extruding the hose, specifically, the roller needs to extrude the hose under a larger pressure to enable the inner wall of the hose to be attached, namely two volume cavities which are not communicated with each other are formed in the hose, so that the inner walls of the hose are contacted with each other along with the movement of the roller, internal friction and abrasion are caused, and abrasion particles fall into materials to cause pollution risk; in addition, the rollers compress the hose at fixed points for a long time, and can also generate permanent deformation damage to the hose, so that the service life of the hose is shortened.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a no extrusion friction between simple structure, gyro wheel and the elastic hose, measurement accuracy is stable, hose long service life, the little over-and-under type straight line single tube pump of pollution risk.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an elevating linear monotube pump comprising: the device comprises a lifting driving assembly, a linear reciprocating assembly, an elastic hose, a closure assembly and a pump body assembly; the linear reciprocating assembly and the elastic hose are arranged in the pump body in a penetrating manner; the intercepting component is used for clamping and loosening the elastic hose; one end of the linear reciprocating assembly is connected with the lifting driving assembly, and the other end of the linear reciprocating assembly is connected with at least one group of roller assemblies; the lifting driving assembly is used for driving the linear reciprocating assembly to do lifting linear motion so as to drive the roller assembly to move and extrude or loosen the elastic hose.

As a further improvement of the present invention, the roller assembly includes a roller; the single-tube pump also comprises an elastic separation barrier, and the elastic separation barrier is positioned between the roller and the elastic hose; under the drive of the driving component, the reciprocating component drives the roller to move and extrude or loosen the elastic partition; the elastic barrier under the pressure of the roller extrudes the elastic hose to realize material conveying.

As a further improvement of the utility model, the pump body assembly comprises a pump body front baffle and a pump body rear baffle; one side of the elastic hose is attached to the front baffle of the pump body, and the other side of the elastic hose is attached to the elastic partition; and the side part of the linear reciprocating assembly, which is close to the roller, is provided with a limiting bearing, and when the single-tube pump works, the limiting bearing moves in the pump body along the rear baffle of the pump body.

As a further improvement of the utility model, the linear reciprocating assembly comprises a roller lifting assembly and a screw rod assembly; one end of the roller lifting assembly is connected with the lead screw assembly, the other end of the roller lifting assembly is connected with at least one group of rollers, and the limiting bearing is arranged on the side portion of the roller lifting assembly.

As a further improvement, the one end of the screw rod assembly is connected with the pump body rear baffle, and the other end is connected with the output end of the lifting driving assembly through the shaft coupling.

As a further improvement of the utility model, the screw assembly comprises a screw base, a screw nut and a screw; one end of the screw rod is connected with the rear baffle of the pump body, and the other end of the screw rod is connected with the coupler; the roller lifting assembly is fixedly connected with the lead screw nut, and the lead screw nut can linearly reciprocate along the lead screw.

As a further improvement, the screw base is disposed at the end of the screw close to the coupling.

As a further improvement, the two ends of the elastic hose coming in and going out of the pump body are respectively connected with the closure assembly.

As a further improvement of the utility model, the intercepting component is a check valve or an electromagnetic valve or a pinch valve or an on-off valve.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses an over-and-under type straight line single tube pump is through all wearing to establish in the pump body with straight reciprocating assembly and flexible hose, and the one end and the lift drive subassembly of straight reciprocating assembly are connected, and the other end is connected with at least a set of wheel components, and the during operation, drive assembly provide power for the reciprocating motion of straight reciprocating assembly to drive wheel components motion and extrude or loosen flexible hose, have advantages such as compact structure, the principle is simple, the measurement accuracy is stable, the pollution risk is little.

2. The utility model discloses an over-and-under type straight line single tube pump selects the gyro wheel as the wheel components, and set up elasticity shelves as the midbody between gyro wheel and elastic hose, under the drive of drive assembly, the straight line reciprocating assembly drives the gyro wheel motion and extrudees or loosens the operation to the elasticity shelves, the elasticity shelves that receive gyro wheel pressure extrude the elastic hose again in order to realize the material transport, realized the contactless extrusion between gyro wheel and the elastic hose, avoided the extrusion friction loss of gyro wheel to the elastic hose, not only be favorable to improving the measurement accuracy stability of single tube pump, effectively prolonged the life of elastic hose again, the use cost of single tube pump has been reduced; in addition, be connected with the multiunit gyro wheel through the reciprocal subassembly of straight line, can effectively prevent the quick resilience of elasticity shelves in the course of the work for the material flows out the lumen steadily, and gyro wheel pressure and rolling friction only act on one side of elasticity shelves, have reduced the roller to the friction loss that elasticity shelves, have improved the life that elasticity shelves.

3. The utility model discloses a lifting type straight line single tube pump, one side of elastic hose is laminated with pump body front baffle, the opposite side is laminated with elasticity shelves mutually, elasticity shelves are as gyro wheel and elastic hose's midbody, elasticity shelves set firmly in the pump body, in the working process of single tube pump, elasticity shelves do not carry out lifting type's linear motion along with the gyro wheel, and in addition self have the elastic deformation ability, elasticity shelves can carry out corresponding pushing down, rising recovery along with the roll of gyro wheel to make corresponding extrusion, release action to elastic hose, in order to realize the material transport; the elastic partition is used for incompletely pressing the elastic hose, namely the pressing degree is incomplete, so that the inner cavity pipe wall of the elastic hose is not contacted, the self-abrasion of the inner cavity of the hose is reduced, and meanwhile, the risks that the inner friction abrasion is caused by the mutual contact between the inner walls of the hose and the abrasion particles fall into materials to cause pollution are avoided; in addition, because the elastic barrier and the elastic hose are not completely extruded, on one hand, the time required by the recovery of the elastic hose can be reduced, and on the other hand, the phenomenon that the elastic hose recovers rapidly to a large extent to generate high-intensity pulses can be avoided.

4. The utility model discloses an over-and-under type straight line single tube pump is equipped with spacing bearing through the lateral part that is close to the gyro wheel on gyro wheel lifting unit, single tube pump during operation, spacing bearing is at the internal motion of pump along pump body backplate, through spacing bearing's supplementary guide effect, gyro wheel lifting unit has been avoided producing the displacement deviation at the lift in-process, existing work efficiency that does benefit to improves the single tube pump, also ensured gyro wheel and elasticity and separated between the shelves, elasticity separates the effective extrusion between shelves and the flexible hose, the precision stability of single tube pump has been improved.

Drawings

Fig. 1 is a schematic view of the structure principle of the lift type linear single tube pump of the present invention.

Illustration of the drawings:

1. a lift drive assembly; 2. a coupling; 3. a lead screw base; 4. a lead screw nut; 5. a lead screw; 6. a pump body rear baffle; 7. a roller lifting assembly; 8. a limit bearing; 9. a roller; 10. elastic barrier; 11. an elastic hose; 12. a shut-off assembly; 13. a front baffle of the pump body.

Detailed Description

The invention will be further described with reference to the drawings and specific preferred embodiments without limiting the scope of the invention.

Examples

As shown in fig. 1, the utility model discloses a lift-type straight line single tube pump, include: the device comprises a lifting driving assembly 1, a linear reciprocating assembly, an elastic hose 11, a closure assembly 12 and a pump body assembly; the linear reciprocating component and the elastic hose 11 are arranged in the pump body in a penetrating way; the shut-off assembly 12 is used for clamping and releasing the elastic hose 11; one end of the linear reciprocating assembly is connected with the lifting driving assembly 1, and the other end of the linear reciprocating assembly is connected with at least one group of roller assemblies; the lifting driving assembly 1 is used for driving the linear reciprocating assembly to do lifting linear motion so as to drive the roller assembly to move and extrude or release the elastic hose 11.

In the embodiment, the linear reciprocating assembly, the elastic partition 10 and the elastic hose 11 are all arranged in the pump body in a penetrating mode, one end of the linear reciprocating assembly is connected with the lifting driving assembly 1, the other end of the linear reciprocating assembly is connected with at least one group of roller assemblies, and when the linear reciprocating assembly works, the driving assembly provides power for the reciprocating motion of the linear reciprocating assembly to drive the roller assemblies to move and extrude or loosen the elastic hose 11.

In this embodiment, the roller assembly includes a roller 9; the single-tube pump also comprises an elastic baffle 10, and the elastic baffle 10 is positioned between the roller 9 and the elastic hose 11; under the drive of the driving component 1, the reciprocating component drives the roller 9 to move and extrude or loosen the elastic partition 10; the elastic barrier 10, which is pressed by the roller 9, presses the elastic hose 11 to effect the material transfer. It is understood that in other embodiments, the roller assembly may also be a press block or other member capable of performing a pipe pressing function.

In this embodiment, roller 9 is selected as the roller assembly, and elastic partition 10 is set between roller 9 and elastic hose 11 as the intermediate, under the driving of driving assembly 1, the linear reciprocating assembly drives roller 9 to move and extrudes or loosens elastic partition 10, elastic partition 10 under the pressure of roller 9 extrudes elastic hose 11 to complete material conveying, non-contact extrusion between roller 9 and elastic hose 11 is realized, the extrusion friction loss of roller 9 to elastic hose 11 is avoided, which is not only beneficial to improving the metering precision stability of the single-tube pump, but also effectively prolongs the service life of elastic hose 11, and reduces the use cost of the single-tube pump. In addition, through being connected the reciprocal subassembly of straight line with multiunit gyro wheel 9, can effectively prevent elasticity and separate quick resilience of shelves 10 in the course of the work for the material flows out the lumen steadily, and gyro wheel pressure and rolling friction only act on one side of elasticity shelves 10, have reduced the friction loss of gyro wheel 9 to elasticity shelves 10, have improved elasticity and have separated the life of shelves 10.

In this embodiment, one end of the elastic hose 11 extends out of the single-pipe pump for inputting the material, and the other end of the elastic hose 11 passes through the single-pipe pump for outputting the material. The roller 9 intermittently extrudes the elastic hose 11 by extruding the elastic barrier 10, so that the material is sucked into the hose from one end of the elastic hose 11 and then flows out from the other end of the elastic hose 11. Two ports of the elastic hose 11, which are connected with the single pipe pump, are correspondingly provided with a closure component 12.

In this embodiment, the pump body assembly includes a pump body front baffle 13 and a pump body rear baffle 6; one side of the elastic hose 11 is jointed with a front baffle 13 of the pump body, and the other side is jointed with the elastic partition 10; and the side part of the linear reciprocating assembly, which is close to the roller 9, is provided with a limiting bearing 8, and when the single-tube pump works, the limiting bearing 8 moves in the pump body along the rear baffle 6 of the pump body. In this embodiment, when the single-tube pump is in operation, the elastic partition 10 does not completely squeeze the elastic hose 11, and the inner tube wall of the elastic hose 11 is not in contact with the inner tube wall.

In the embodiment, one side of the elastic hose 11 is attached to the front baffle 13 of the pump body, the other side is attached to the elastic partition 10, the elastic partition 10 is used as an intermediate body between the roller 9 and the elastic hose 11, the elastic partition 10 is fixedly arranged in the pump body, in the working process of the single-tube pump, the elastic partition 10 does not perform lifting linear motion along with the roller 9, and has elastic deformation capacity, and the elastic partition 10 can perform corresponding downward pressing and lifting recovery along with the rolling of the roller 9, so that the elastic hose 10 is correspondingly extruded and released to realize material conveying; because the elastic partition 10 does not completely compress the elastic hose 11, namely the pressing degree is not complete, the inner cavity tube wall of the elastic hose 11 is not contacted, the self-abrasion of the inner cavity of the hose is reduced, and meanwhile, the risk that the abrasion particles fall into the material to cause pollution because the inner walls of the hose are contacted with each other to cause internal friction and abrasion is also avoided. In addition, because the elastic barrier 10 and the elastic hose 11 are not completely extruded, on one hand, the time required for restoring the elastic hose 11 can be reduced, and on the other hand, the elastic hose 11 can be prevented from being rapidly restored to a great extent to generate high-intensity pulses. In this embodiment, the elastic barrier 10 may be made of rubber or silica gel. It is understood that in other embodiments, the material of the elastic barrier 10 may be other soft materials with elastic deformation capability to obtain better pipe pressing effect.

As shown in fig. 1, in the present embodiment, the linear reciprocating assembly includes a roller lifting assembly 7 and a lead screw assembly; one end of the roller lifting component 7 is connected with the screw rod component, the other end of the roller lifting component is connected with at least one group of rollers 9, and the limiting bearing 8 is arranged on the side part of the roller lifting component 7. In this embodiment, the pump body subassembly is vertical direction and arranges, has effectively reduced the installation volume of whole equipment. In this embodiment, one end of the roller lifting assembly 7 extends out of the pump body and is connected with the screw rod assembly, and the other end of the roller lifting assembly extends into the pump body and is connected with the roller 9. Through the lateral part that is close to gyro wheel 9 on gyro wheel lifting unit 7 is equipped with spacing bearing 8, single tube pump during operation, spacing bearing 8 moves in the pump body along pump body backplate 6, through spacing bearing 8's supplementary guide effect, avoided gyro wheel lifting unit 7 to produce the displacement deviation at the lift in-process, existing work efficiency that is favorable to improving the single tube pump, also ensured gyro wheel 9 and elasticity and separated between shelves 10, the effective extrusion between elasticity separates shelves 10 and elastic hose 11, the precision stability of single tube pump has been improved.

In this embodiment, one end of the screw assembly is connected with the pump body rear baffle 6, and the other end is connected with the output end of the lifting driving assembly 1 through the coupler 2. Further, the screw assembly comprises a screw base 3, a screw nut 4 and a screw 5; one end of the screw 5 is connected with the pump body rear baffle 6, and the other end is connected with the coupling 2; the roller lifting assembly 7 is fixedly connected with the lead screw nut 4, and the lead screw nut 4 can linearly reciprocate along the lead screw 5. The lead screw base 3 is arranged on the lead screw 5 and close to the end part of the coupler 2. Through the lead screw respectively with pump body backplate 6 and lift drive assembly 1 be connected as a whole with the driving piece for the structure of the whole pump body is compacter, and drive power transmission is more high-efficient. It will be appreciated that in this embodiment, the lifting drive assembly 1 may be a powered motor. In other embodiments, the lifting driving assembly 1 may be other mechanisms with power output function.

In the embodiment shown in fig. 1, the two ends of the flexible hose 11 entering and exiting the monotube pump are respectively connected with the shutoff assembly 12. The shut-off assembly 12 cooperates with the flexible hose 11 to perform a backflow prevention operation. It will be understood that the shut-off assembly 12 may be embodied as a one-way valve or a solenoid valve or a pinch valve or an on-off valve, but is not limited to an on-off valve and the above-mentioned valve group, depending on the actual requirements.

The during operation, the drive power of lift drive assembly 1 passes through shaft coupling 2 and transmits to lead screw 5, lead screw 5 is forward rotary motion, it is ascending motion of straight line to drive lead screw nut 4, also be ascending motion of straight line along with lead screw nut 4 fixed connection's gyro wheel lifting unit 7, the setting is at gyro wheel 9 limit ascending edge of straight line of gyro wheel lifting unit 7 tip and is applyed pressure to elasticity spacer 10, elasticity spacer 10 receives the pressure of gyro wheel 9 and produces elastic deformation, carry out incomplete extrusion to elastic hose 11, namely, the inner chamber pipe wall contactless of elastic hose 11. The elastic barrier 10 only deforms to press down the elastic hose 11 and does not roll along with the roller 9, so that the outer wall of the elastic hose 11 is only pressed downwards by the elastic barrier 10 and is not subjected to the rolling friction force of the roller 9. The space of the inner cavity of the elastic hose 11 pressed down by the elastic partition 10 is reduced, the pressure of the fluid in the tube cavity is increased, at the moment, the closure component 12 at the outlet end of the elastic hose 11 is opened, the fluid in the tube cavity is discharged, and the material conveying is realized. Along with the rolling and rising of the roller 9, the elastic baffle 10 continuously presses the elastic hose 11, and the materials in the pipe cavity are stably discharged. When the roller 9 moves to a predetermined position, the shut-off assembly 12 at the outlet end of the flexible hose 11 is closed and the shut-off assembly 12 at the inlet end is opened. The lifting driving assembly 1 drives the screw rod 5 to rotate reversely, the screw rod nut 4 makes a straight descending motion to drive the roller 9 to descend linearly and gradually loosen the elastic separation rail 10, the elastic separation rail 10 leaves the elastic hose 11 due to self elastic recovery, and meanwhile, the elastic hose 11 enables the space in the pipe cavity to be increased to form negative pressure by means of self elastic recovery, so that materials are sucked into the pipe cavity. Under the drive of the lifting drive assembly 1, the screw nut 4 connected with the screw 5 drives the roller lifting assembly 7 and the roller 9 to linearly lift for a period, and the elastic hose 11 finishes a pressure absorbing process to realize material conveying. In the lifting process, the limiting bearing 8 arranged on the side of the roller lifting assembly 7 rolls along the pump body rear baffle 6, so that the roller lifting assembly 7 is prevented from generating position deviation in the lifting process, effective extrusion between the roller 9 and the elastic barrier 10 and between the elastic barrier 10 and the elastic hose 11 is ensured, and the precision stability of the single tube pump is improved.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. Those skilled in the art can make numerous changes and modifications to the disclosed embodiments, or modify equivalent embodiments, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims

1. A lift type linear single-tube pump is characterized by comprising: the device comprises a lifting driving assembly (1), a linear reciprocating assembly, an elastic hose (11), an interception assembly (12) and a pump body assembly; the linear reciprocating assembly and the elastic hose (11) are arranged in the pump body in a penetrating way; the cut-off component (12) is used for clamping and loosening the elastic hose (11); one end of the linear reciprocating assembly is connected with the lifting driving assembly (1), and the other end of the linear reciprocating assembly is connected with at least one group of roller assemblies; the lifting driving assembly (1) is used for driving the linear reciprocating assembly to do lifting linear motion so as to drive the roller assembly to move and extrude or loosen the elastic hose (11).

2. The elevating linear monotube pump according to claim 1, wherein the roller assembly includes a roller (9); the single-tube pump further comprises an elastic partition (10), and the elastic partition (10) is positioned between the roller (9) and the elastic hose (11); under the drive of the driving component (1), the reciprocating component drives the roller (9) to move and extrude or loosen the elastic barrier (10); the elastic baffle (10) pressed by the roller (9) extrudes the elastic hose (11) to realize material conveying.

3. The elevating linear monotube pump according to claim 2, wherein the pump body assembly comprises a pump body front baffle (13) and a pump body rear baffle (6); one side of the elastic hose (11) is attached to a front baffle (13) of the pump body, and the other side of the elastic hose is attached to the elastic partition (10); and the side part of the linear reciprocating assembly, which is close to the roller (9), is provided with a limiting bearing (8), and when the single-tube pump works, the limiting bearing (8) moves in the pump body along the rear baffle (6) of the pump body.

4. The elevating linear monotube pump of claim 3, wherein the linear reciprocating assembly comprises a roller elevating assembly (7) and a lead screw assembly; one end of the roller lifting assembly (7) is connected with the lead screw assembly, the other end of the roller lifting assembly is connected with at least one group of rollers (9), and the limiting bearing (8) is arranged on the side part of the roller lifting assembly (7).

5. The lifting linear monotube pump according to claim 4, wherein one end of the screw assembly is connected with the pump body backplate (6), and the other end is connected with the output end of the lifting driving assembly (1) through the coupling (2).

6. The elevating linear monotube pump according to claim 5, wherein the lead screw assembly comprises a lead screw base (3), a lead screw nut (4), and a lead screw (5); one end of the screw rod (5) is connected with the pump body rear baffle (6), and the other end of the screw rod is connected with the coupler (2); the roller lifting assembly (7) is fixedly connected with the lead screw nut (4), and the lead screw nut (4) can linearly reciprocate along the lead screw (5).

7. The lifting linear monotube pump according to claim 6, wherein the lead screw base (3) is provided on the end of the lead screw (5) near the coupling (2).

8. The lift linear monotube pump according to any one of claims 1 to 7, wherein the two ends of the flexible hose (11) entering and exiting the pump body are respectively connected with the cut-off assembly (12).

9. The lifting linear monotube pump according to claim 8, wherein the shut-off assembly (12) is a check valve or a solenoid valve or a pinch valve or a break-make valve.