CN220036929U

CN220036929U - Rotary vane pump

Info

Publication number: CN220036929U
Application number: CN202320025317.5U
Authority: CN
Inventors: 廖勇刚; 颜邦友
Original assignee: SHENZHEN FAITH TECHNOLOGY CO LTD
Current assignee: SHENZHEN FAITH TECHNOLOGY CO LTD
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-11-17
Anticipated expiration: 2033-01-03

Abstract

The utility model discloses a rotary vane pump, which comprises a main body; the cylinder body is arranged on the main body, a working cavity is arranged in the cylinder body, and a suction channel communicated with the working cavity and a discharge channel communicated with the working cavity are arranged on the side wall of the working cavity; the balance wheel is arranged in the cylinder body, one side of the balance wheel is abutted with the side wall of the working cavity, and a gap is formed between the other side of the balance wheel and the side wall of the working cavity; the sealing clapboard is bendable, one end of the sealing clapboard is connected with the balance wheel, and the other end of the sealing clapboard is connected with the side wall of the working cavity between the suction channel and the discharge channel; the power element, the output shaft and the balance wheel. According to the utility model, the gap between the balance wheel and the working cavity is divided into the negative pressure dynamic cavity and the positive pressure dynamic cavity by the sealing partition plate, so that medium leakage between the negative pressure dynamic cavity and the positive pressure dynamic cavity is avoided, the pressure states of the negative pressure dynamic cavity and the positive pressure dynamic cavity are maintained, and the working efficiency of the rotary vane pump is improved.

Description

Rotary vane pump

Technical Field

The utility model relates to the technical field of fluid pressure equipment, in particular to a rotary vane pump.

Background

The fluid is a power medium commonly used in industrial equipment and industrial production, such as an air power system and a hydraulic power system. The key equipment of the fluid as a power medium is a pump, and the fluid is pressurized by the pump, so that the fluid has higher pressure, and power output can be carried out by means of power elements such as a pneumatic motor, a hydraulic push rod and the like.

In some rotor pumps, the main structure includes a motor, a rotor, a motor, a cylinder, and the like, the rotor is disposed in the cylinder, and at least two chambers are separated in the cylinder, the motor drives the rotor to move in the cylinder, and the chambers are changed, such as volume expansion, compression, and the like, by the movement of the rotor, so that fluid is sucked in, and fluid is compressed or discharged.

However, when the rotor separates the cavities, the rotor is difficult to keep close contact with the inner wall of the cylinder body, and the gap between the adjacent cavities is easy to increase, so that medium series flow is caused, and the working efficiency of the rotor pump is affected.

Disclosure of Invention

In order to overcome the defects of the prior art, one of the purposes of the present utility model is to provide a rotary vane pump, so as to solve the technical problem of medium series flow in the rotor pump in the prior art.

One of the purposes of the utility model is realized by adopting the following technical scheme:

a rotary vane pump, the rotary vane pump comprising:

the main body is a bearing structure;

the cylinder body is arranged on the main body, a working cavity is arranged in the cylinder body, and a suction channel communicated with the working cavity and a discharge channel communicated with the working cavity are arranged on the side wall of the working cavity;

the balance wheel is arranged in the cylinder body, one side of the balance wheel is abutted to the side wall of the working cavity, and a gap is formed between the other side of the balance wheel and the side wall of the working cavity;

the sealing partition plate is bendable, one end of the sealing partition plate is connected with the balance wheel, the other end of the sealing partition plate is connected with the side wall of the working cavity between the suction channel and the discharge channel, and the sealing partition plate is used for dividing a gap between the balance wheel and the side wall of the working cavity into two dynamic cavities;

the power element is connected with the main body, an output shaft of the power element stretches into the cylinder body, and the output shaft is connected with the balance wheel to drive the balance wheel to move along the inner wall of the cylinder body.

Optionally, a receiving cavity is arranged on the side wall of the working cavity, and the receiving cavity is positioned between the suction channel and the discharge channel;

the sealing partition plate is arranged in the accommodating cavity, and the other end of the sealing partition plate is connected with the side wall of the accommodating cavity.

Optionally, a first clamping groove is formed in the circumferential surface of the balance wheel;

the side wall of the accommodating cavity is provided with a second clamping groove;

two ends of the sealing partition plate are provided with clamping parts, and the two clamping parts are respectively clamped into the first clamping groove and the second clamping groove.

Optionally, the clamping portion is a columnar structure extending along the width direction of the sealing partition plate.

Optionally, a pin extending in the width direction is arranged in the clamping portion.

Optionally, the sealing separator is an elastic rubber separator.

Optionally, a sealing groove is arranged at the bottom of the cylinder body, and a bearing groove is arranged at one side of the sealing groove, which is close to the balance wheel;

a sealing shaft sleeve is arranged in the sealing groove, and a bearing is arranged in the bearing groove;

the output shaft sequentially passes through the sealing shaft sleeve and the bearing.

Optionally, the rotary vane pump further comprises an eccentric wheel, wherein the eccentric wheel is arranged in the cylinder body and is sleeved on the output shaft;

the balance wheel is rotatably sleeved on the eccentric wheel.

Optionally, the rotary vane pump further comprises a cylinder cover, a fluid cavity is arranged in the cylinder cover, an inlet communicated with the fluid cavity is arranged on one side, away from the cylinder body, of the cylinder cover, an outlet communicated with the fluid cavity is arranged on one side, close to the cylinder body, of the cylinder cover, and the outlet is communicated with the suction channel.

Optionally, the cylinder cover comprises a cylinder piece and a surface cover, wherein a fluid cavity is formed in one side of the surface cover, which is close to the cylinder body, and the cylinder piece is arranged on one side of the surface cover, which is close to the cylinder body;

the inlet is arranged on the face cover, and the outlet is arranged on the cylinder plate.

Compared with the prior art, the utility model has the beneficial effects that:

in this embodiment, through setting up sealed baffle and balance, sealed baffle separates the clearance between balance and the working chamber into negative pressure dynamic cavity and positive pressure dynamic cavity, avoids taking place the medium between negative pressure dynamic cavity and the positive pressure dynamic cavity and reveal, keeps the pressure state of negative pressure dynamic cavity and positive pressure dynamic cavity, improves the work efficiency of rotary vane pump.

Drawings

FIG. 1 is a schematic diagram of a rotary vane pump of the present utility model;

FIG. 2 is an exploded schematic view of the rotary vane pump of the present utility model;

FIG. 3 is another exploded schematic view of the rotary vane pump of the present utility model;

FIG. 4 is a schematic cross-sectional view of a rotary vane pump of the present utility model;

FIG. 5 is a schematic top view of the rotary vane pump of the present utility model with one cylinder head removed;

FIG. 6 is a schematic view of the balance of the rotary vane pump of the present utility model after passing over the discharge passage;

FIG. 7 is a schematic view of the balance of the rotary vane pump of the present utility model shown in a position adjacent the diaphragm;

FIG. 8 is a schematic view of the balance of the rotary vane pump of the present utility model again passing through the discharge passage;

fig. 9 is a schematic view showing a state in which the balance wheel passes over the discharge passage again in the rotary vane pump of the present utility model.

In the figure:

1. a main body;

2. a cylinder; 21. a working chamber; 211. a negative pressure dynamic cavity; 212. a positive pressure dynamic cavity; 22. a suction passage; 23. a discharge passage; 24. a receiving chamber;

3. a balance wheel;

4. a sealing separator; 41. a clamping part; 42. a pin;

5. a power element; 51. an output shaft;

6. sealing the shaft sleeve; 71. a first bearing; 72. a second bearing;

8. an eccentric wheel;

9. a cylinder cover; 91. a cylinder sheet; 92. and (5) a face cover.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 1 to 9 of the embodiments of the present utility model, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model discloses a rotary vane pump, which is shown in fig. 1 to 3, and comprises a main body 1, a cylinder body 2, a balance wheel 3, a sealing partition plate 4, a power element 5 and the like. Specifically, the main body 1 is the main carrying structure of a rotary vane pump. The cylinder body 2 is arranged on the main body 1, a working cavity 21 is arranged in the cylinder body 2, a suction channel 22 and a discharge channel 23 are arranged on the side wall of the working cavity 21, the suction channel 22 is communicated with the working cavity 21 to form a channel for sucking fluid, and the discharge channel 23 is communicated with the working cavity 21 to form a channel for discharging fluid. Balance 3 is disposed in cylinder 2, one side of balance 3 abuts against the side wall of working chamber 21, and a gap is provided between the other side of balance 3 and the side wall of working chamber 21. The sealing partition plate 4 is bendable, one end of the sealing partition plate 4 is connected with the balance wheel 3, the other end of the sealing partition plate 4 is connected with the side wall of the working cavity 21, which is positioned between the suction channel 22 and the discharge channel 23, and the sealing partition plate 4 divides a gap between the balance wheel 3 and the side wall of the working cavity 21 into two dynamic cavities. The power element 5 is connected to the body 1, while the output shaft 51 of the power element 5 extends into the cylinder 2, the output shaft 51 being connected to the balance wheel 3 to drive the balance wheel 3 to move along the inner wall of the cylinder 2.

During the movement of balance wheel 3, the volumes of the two dynamic cavities are transformed and changed, in particular, as shown in fig. 5, as balance wheel 3 passes near suction channel 22, a negative pressure dynamic cavity 211 is gradually generated; as shown in fig. 6, as balance wheel 3 continues to rotate, negative pressure dynamic cavity 211 expands, negative pressure dynamic cavity 211 continuously sucks in fluid, negative pressure dynamic cavity 211 also continuously moves and expands along the side wall of working cavity 21 along with the swinging movement, as shown in fig. 7, until balance wheel 3 moves to a position close to sealing partition plate 4, and negative pressure dynamic cavity 211 expands to the maximum volume; the swing continues to move, as shown in fig. 8, the balance wheel 3 passes over the sealing partition plate 4, the negative pressure dynamic cavity 211 is compressed, the negative pressure dynamic cavity 211 is converted into a positive pressure dynamic cavity 212, and meanwhile, the positive pressure dynamic cavity 212 is communicated with the discharge channel 23, and the positive pressure dynamic cavity 212 discharges fluid; as balance 3 continues to rotate, as shown in fig. 9, a new negative pressure dynamic cavity 211 is created as it oscillates past the vicinity of suction channel 22; then, the swing continues to move, the volume of the negative pressure dynamic cavity 211 and the positive pressure dynamic cavity 212 separated by taking the sealing partition plate 4 as a limit changes, the positive pressure dynamic cavity 212 compresses and discharges fluid, the negative pressure dynamic cavity 211 sucks fluid, the swing continues to periodically move, and the negative pressure dynamic cavity 211 and the positive pressure dynamic cavity 212 periodically switch, so that the fluid is continuously compressed.

In this embodiment, by setting the sealing spacer 4 and the balance wheel 3, the sealing spacer 4 separates the gap between the balance wheel 3 and the working cavity 21 into the negative pressure dynamic cavity 211 and the positive pressure dynamic cavity 212, thereby avoiding medium leakage between the negative pressure dynamic cavity 211 and the positive pressure dynamic cavity 212, maintaining the pressure states of the negative pressure dynamic cavity 211 and the positive pressure dynamic cavity 212, and improving the working efficiency of the rotary vane pump.

Further, as shown in fig. 3, the side wall of the working chamber 21 is provided with a receiving chamber 24, and the receiving chamber 24 is located between the suction passage 22 and the discharge passage 23. The sealing partition plate 4 is arranged in the accommodating cavity 24, and the other end of the sealing partition plate 4 is connected with the side wall of the accommodating cavity 24. The installation seal spacer 4 is accommodated by providing the accommodation chamber 24.

Further, a first engagement groove is provided on the circumferential surface of the balance 3. The side wall of the accommodating cavity 24 is provided with a second clamping groove. Two ends of the sealing partition board 4 are provided with clamping parts 41, and the two clamping parts 41 are respectively clamped into the first clamping groove and the second clamping groove.

In this embodiment, through setting up first draw-in groove and second draw-in groove for the both ends of sealing baffle 4 can with first draw-in groove and second draw-in groove joint, improve sealing baffle 4's installation stability.

Specifically, the engaging portion 41 has a columnar structure extending in the width direction of the sealing separator 4. The first clamping groove and the second clamping groove are columnar clamping grooves, and side seams through which the partition plate can pass are formed in the side walls of the columnar clamping grooves.

The sealing partition board 4 is in a thin plate structure in many cases, or is made of flexible and elastic materials, and is easy to send to the clamping part 41 to deform locally under the condition of pulling the partition board for many times, so that the deformed part slips from the side seam, and the sealing effect of the sealing partition board 4 is affected. In order to maintain the stability of the clamping portion 41, as shown in fig. 2 and 3, pins 42 extending in the width direction are provided in the clamping portion 41, and the pins 42 connect the clamping portion 41 together in series, thereby enhancing the overall strength of the clamping portion 41 and avoiding or reducing local deformation.

Specifically, the sealing separator 4 is an elastic rubber separator.

In some embodiments of rotary vane pumps, the bottom of the cylinder 2 is provided with a sealing groove, and the side of the sealing groove close to the balance 3 is provided with a bearing groove. As shown in fig. 4, a seal sleeve 6 is provided in the seal groove, and a first bearing 71 is provided in the bearing groove. The output shaft 51 passes through the sealing sleeve 6 and the first bearing 71 in sequence. During the swinging movement, balance wheel 3 receives the high pressure of the fluid in positive pressure dynamic cavity 212, and is influenced by the assembly clearance or the bending of output shaft 51, the swinging of output shaft 51 increases, the risk of leakage of the sealing ring increases, and simultaneously the swinging of balance wheel 3 increases, so that the self-absorption capacity of the pump is weakened. Therefore, in this embodiment, the first bearing 71 is added on the side of the seal groove close to the balance wheel 3, so as to increase the holding effect on the output shaft 51, and weaken or avoid the high pressure influence of the positive pressure dynamic cavity 212 on the balance wheel 3.

In some embodiments of the vane pump, as shown in fig. 2 and 3, the vane pump further includes an eccentric wheel 8, the eccentric wheel 8 is disposed in the cylinder 2, and the eccentric wheel 8 is sleeved on the output shaft 51. Balance 3 is rotatably journalled on eccentric 8. In this embodiment, the output shaft 51 of the power element 5 is connected to the eccentric 8, so that the eccentric 8 rotates, and the eccentric 8 drives the swing motion.

Of course, as shown in fig. 3, in order to improve the smoothness of the rotary sleeve connection of the eccentric 8 and the balance 3, a second bearing 72 is further provided between the eccentric 8 and the balance 3, specifically, the second bearing 72 is sleeved on the eccentric 8, and the balance 3 is sleeved on the second bearing 72.

In some embodiments of the vane-cell pump, as shown in fig. 2 and 3, the vane-cell pump further includes a cylinder head 9, a fluid chamber is disposed in the cylinder head 9, an inlet communicating with the fluid chamber is disposed on a side of the cylinder head 9 away from the cylinder body 2, an outlet communicating with the fluid chamber is disposed on a side of the cylinder head 9 adjacent to the cylinder body 2, and the outlet communicates with the suction channel 22.

Specifically, as shown in fig. 3, the cylinder head 9 includes a cylinder block 91 and a face cover 92, the face cover 92 having a fluid chamber provided on a side thereof close to the cylinder block 2, the cylinder block 91 being provided on a side thereof close to the cylinder block 2. The inlet is provided on the cover 92, and the outlet is provided on the cylinder block 91.

The aforementioned power element 5 is in particular an electric motor.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. A rotary vane pump, the rotary vane pump comprising:

the main body is a bearing structure;

2. A rotary vane pump as claimed in claim 1 wherein the side wall of the working chamber is provided with a receiving chamber, the receiving chamber being located between the suction and discharge passages;

3. The rotary vane pump of claim 2 wherein a first clamping groove is formed in the circumferential surface of the balance wheel;

4. A rotary vane pump as claimed in claim 3, wherein said engagement portion is a columnar structure extending in a width direction of said seal spacer.

5. The rotary vane pump of claim 4 wherein said snap-in portion has a pin extending in a width direction.

6. A rotary vane pump as claimed in any one of claims 1 to 5 wherein said sealing diaphragm is an elastomeric rubber diaphragm.

7. The rotary vane pump of claim 1 wherein the bottom of the cylinder is provided with a seal groove, and a bearing groove is provided on a side of the seal groove adjacent to the balance wheel;

8. The rotary vane pump of claim 1 further comprising an eccentric disposed within the cylinder, the eccentric being sleeved on the output shaft;

the balance wheel is rotatably sleeved on the eccentric wheel.

9. The rotary vane pump of claim 1 further comprising a cylinder head having a fluid chamber therein, an inlet in communication with the fluid chamber being provided on a side of the cylinder head remote from the cylinder body, an outlet in communication with the fluid chamber being provided on a side of the cylinder head proximate to the cylinder body, the outlet being in communication with the suction passage.

10. The rotary vane pump of claim 9 wherein the cylinder head comprises a cylinder plate and a face cover, a fluid chamber being provided on a side of the face cover adjacent to the cylinder, the cylinder plate being provided on a side of the face cover adjacent to the cylinder;