CN216470388U

CN216470388U - Screw pump

Info

Publication number: CN216470388U
Application number: CN202123159704.8U
Authority: CN
Inventors: 诸葛挺; 赵伯亮; 彭建林
Original assignee: Shenzhen Manst Technology Co Ltd
Current assignee: Shenzhen Manst Technology Co Ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-05-10
Anticipated expiration: 2031-12-15

Abstract

The utility model relates to a technical field that battery thick liquids were carried, concretely relates to screw pump, including screw cavity and the rotation screw rod of setting in it, screw cavity lateral wall is equipped with feed inlet and discharge gate, it carries the section to be equipped with first transport section and second on the rotation screw rod, the pay-off direction of first transport section sets up with the pay-off opposite direction of second transport section, the transport extrusion force of first transport section is greater than the transport extrusion force of second transport section and is suitable for extruding the medium in the screw cavity from the discharge gate, it is equipped with the sealing washer that seals to carry out the screw cavity to rotate a pot head that the screw rod is close to second transport section. The forward extrusion force of the first conveying section is F1, the backward extrusion force of the second conveying section is F2, and the pressure F at the sealing ring is F1-F2 < F1, so that the pressure at the sealing ring is reduced, the sealing performance is improved, and the probability of leakage of the sealing ring is lower. The mechanical seal is replaced by the common seal, and the installation and the disassembly are more convenient.

Description

Screw pump

Technical Field

The utility model relates to a technical field that battery thick liquids were carried, concretely relates to screw pump.

Background

The sealing of the screw cavity separates the medium in the cavity from parts such as a bearing and the like, so that the medium in the cavity flows in a specific space, and the sealing of the screw cavity plays an extremely important role in the normal working operation of the screw.

Most of the existing screw cavity body seals are mechanical seals, the cost required by sealing elements is high, the installation and the disassembly are troublesome, and inconvenience is brought to the sealing and the type selection of the screw.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a screw pump to solve the problem among the above-mentioned background art.

In order to realize the above object, the utility model discloses a technical scheme provide a screw pump, including screw cavity and the rotation screw rod of setting in it, screw cavity lateral wall is equipped with feed inlet and discharge gate, it carries the section to be equipped with first transport section and second on the rotation screw rod, the pay-off direction of first transport section with the pay-off opposite direction of section is carried to the second sets up, the transport extrusion force of first transport section is greater than the transport extrusion force of second transport section is suitable for with medium in the screw cavity is followed the discharge gate is extruded, it is close to rotate the screw rod the pot head of second transport section is equipped with rightly the screw cavity carries out sealed sealing washer.

Furthermore, the first conveying section and the second conveying section are both provided with threads, and the rotating direction of the threads on the first conveying section is opposite to that of the threads on the second conveying section.

Further, the screw pitch of the first conveying section is the same as that of the second conveying section, and the length of the first conveying section is larger than that of the second conveying section.

Further, the length of the first conveying section is the same as that of the second conveying section, and the screw pitch of the first conveying section is smaller than that of the second conveying section.

Furthermore, a third conveying section is arranged on the rotating screw rod and close to the feeding port, and the feeding direction of the third conveying section is the same as that of the first conveying section.

Furthermore, a first grinding section is arranged on the rotating screw, and the feeding direction of the first grinding section is the same as that of the first conveying section.

Further, a second grinding section is arranged on one side, close to the discharge port, of the first grinding section, and the feeding direction of the second grinding section is opposite to that of the first grinding section.

Furthermore, the first grinding section is divided into two sections through a fourth conveying section, and the feeding direction of the fourth conveying section is opposite to that of the first conveying section.

Furthermore, the number of the rotating screws is at least two, at least one of the rotating screws is a driving screw, at least the other rotating screw is a driven screw, the driving screw is meshed with the driven screw, and one end of the driving screw is connected with a driving mechanism.

The beneficial effects of the utility model reside in that:

1. the feeding direction of the first conveying section is opposite to that of the second conveying section, the forward extrusion force of the first conveying section is F1, the backward extrusion force of the second conveying section is F2, and therefore the pressure F of the sealing ring is F1-F2 < F1, the pressure of the sealing ring is reduced, the probability of leakage of the sealing ring is lower, and the service life of the sealing ring is longer than that of the sealing ring without the second conveying section. The sealing device has the advantages that mechanical sealing is replaced by common sealing, the cost of the sealing element is saved, and the mounting and the dismounting are more convenient.

2. All be equipped with the screw thread on first transport section and the second transport section, screw thread direction of rotation on the first transport section sets up with screw thread direction of rotation on the second transport section is opposite. By adopting the structure, the slurry medium is fully ground.

3. One side of the first grinding section, which is close to the discharge port, is provided with a second grinding section, and the feeding direction of the second grinding section is opposite to that of the first grinding section. The conveying extrusion force of the first grinding section is larger than that of the second grinding section. Through the opposite conveying of the second grinding section, the conveying speed of the medium can be slowed down to a certain extent, so that the medium is fully ground at the positions of the first grinding section and the second grinding section, and the uniformity of the medium is better.

4. The first grinding section is divided into two sections through a fourth conveying section, and the feeding direction of the fourth conveying section is opposite to that of the first conveying section. Through setting up the fourth and carrying the section, carry out the opposite transport to the medium, slow down the conveying speed of medium to a certain extent for the medium fully grinds in first grinding section, makes the homogeneity of medium better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a screw pump according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic view of an overall structure of a rotary screw rod adopted by the screw pump according to the embodiment of the present invention.

Description of reference numerals:

1. a screw cavity; 11. a feed inlet; 12. a discharge port; 13. a plug; 2. rotating the screw; 21. A first conveying section; 22. a second conveying section; 23. a third conveying section; 24. a first grinding section; 25. A second grinding section; 26. a fourth conveying section; 27. a driving screw; 28. a driven screw; 3. a seal ring; 4. a drive mechanism; 5. a supporting seat; 6. and (5) installing a box.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1-3, as the utility model discloses a screw pump that embodiment provided, including screw cavity 1 and the rotation screw rod 2 of setting in it, screw cavity 1 lateral wall is equipped with feed inlet 11 and discharge gate 12, it carries section 22 to be equipped with first transport section 21 and second on the rotation screw rod 2, the pay-off direction of first transport section 21 sets up with the pay-off direction of second transport section 22 is opposite, the transport extrusion force of first transport section 21 is greater than the transport extrusion force of second transport section 22 and is suitable for extruding the medium in the screw cavity 1 from discharge gate 12, it has sealing washer 3 that seals to carry out screw cavity 1 to rotate a pot head that screw rod 2 is close to second transport section 22.

The feeding direction of the first conveying section 21 is opposite to that of the second conveying section 22, the forward extrusion force of the first conveying section 21 is F1, and the backward extrusion force of the second conveying section 22 is F2, so that the pressure F at the sealing ring 3 is F1-F2 < F1, and therefore the pressure at the sealing ring 3 is reduced, the sealing performance is improved, the probability of leakage of the sealing ring 3 is lower, and the service life is longer than that when the second conveying section 22 is not added. The sealing device has the advantages that mechanical sealing is replaced by common sealing, the cost of the sealing element is saved, and the mounting and the dismounting are more convenient.

Specifically, the screw pump further comprises a driving mechanism 4, an installation box 6 and a supporting seat 5, the installation box 6 is arranged at each of two ends of the screw cavity 1, and the installation box 6 separates media in the screw cavity 1 from parts such as bearings and the like, so that the media in the screw cavity 1 flow in a specific space. A sealing ring 3 is arranged in the mounting box 6 close to the end of the discharge port 12, and the sealing ring 3 is sleeved on the rotating screw rod 2 and seals the screw rod cavity 1. The driving mechanism 4 is close to one end of the feed port 11 and is connected with the rotating screw rod 2 and drives the rotating screw rod 2 to rotate. The supporting seat 5 is arranged at the bottom ends of the screw cavity 1 and the mounting box 6 and plays a supporting role in the whole screw pump. A plurality of spare ports are formed in the side wall of the screw cavity 1 and are blocked by plugs 13, and a plurality of screws can be spliced by the feed port 11 and the discharge port 12 which are positioned above and below the screw cavity 1 to perform vertical spatial layout; the standby port facilitates the horizontal layout of the multi-screw pump according to the process requirements. The side wall of the screw cavity 1 is also provided with an adjusting ring, so that the screw cavity is convenient to hoist and transport.

The first conveying section 21 and the second conveying section 22 are both provided with threads, and the rotating direction of the threads on the first conveying section 21 is opposite to that of the threads on the second conveying section 22. By adopting the structure, the slurry medium is fully ground. In this embodiment, the screw thread on the first conveying section 21 is arranged in a left-handed manner, the screw thread on the second conveying section 22 is arranged in a right-handed manner, and the discharge port 12 is located at a junction between the first conveying section 21 and the second conveying section 22. The pitch of the first conveying section 21 is the same as the pitch of the second conveying section 22, and the length of the first conveying section 21 is greater than that of the second conveying section 22. With the above-described structural arrangement, it is possible to realize that the forward pressing force of the first conveying section 21 is F1 greater than the rearward pressing force of the second conveying section 22 is F2.

As a variable embodiment, the first conveying section 21 and the second conveying section 22 may be provided with helical blades, and the direction of rotation of the helical blades in the first conveying section 21 may be opposite to the direction of rotation of the helical blades in the second conveying section 22.

As a variant, the length of the first conveyor segment 21 is the same as the length of the second conveyor segment 22, the pitch of the first conveyor segment 21 being smaller than the pitch of the second conveyor segment 22. With the above-described structural arrangement, it is also possible to realize that the forward pressing force of the first conveying section 21 is F1 greater than the backward pressing force of the second conveying section 22 is F2.

Further, a third conveying section 23 is arranged on the rotating screw 2 and close to the feeding port 11, and the feeding direction of the third conveying section 23 is the same as that of the first conveying section 21. In this embodiment, the screw thread of the third conveying section 23 is arranged to be left-handed and continuously conveys the medium from the inlet opening 11 to the outlet opening 12.

Further, a first grinding section 24 is arranged in the middle of the rotating screw 2, and the feeding direction of the first grinding section 24 is the same as that of the first conveying section 21. That is, the first grinding section 24 is fed in the same direction as the first conveying section 21 and the third conveying section 23, and is fed to the left discharge port 12.

Specifically, a second grinding section 25 is arranged on one side of the first grinding section 24 close to the discharge port 12, and the feeding direction of the second grinding section 25 is opposite to that of the first grinding section 24. The first grinding section 24 feeds to the left and the second grinding section 25 feeds to the right. The delivery pressing force of the first grinding section 24 is larger than that of the second grinding section 25. By the opposite transportation of the second grinding section 25, the transportation speed of the medium can be slowed down to a certain extent, so that the medium is fully ground at the positions of the first grinding section 24 and the second grinding section 25, and the uniformity of the medium is better. The first grinding section 24 is divided into two sections by a fourth conveying section 26, and the feeding direction of the fourth conveying section 26 is set opposite to the feeding direction of the first conveying section 21. Through setting up fourth conveying section 26, carry out the opposite transport to the medium, slow down the conveying speed of medium to a certain extent for the medium fully grinds in first grinding section 24, makes the homogeneity of medium better.

Further, the rotating screws 2 are at least two, at least one is a driving screw 27, at least another one is a driven screw 28, the driving screw 27 is engaged with the driven screw 28, and one end of the driving screw 27 is connected with the driving mechanism 4. The screw pump in this embodiment employs twin screws, i.e., one drive screw 27 and one slave screw are provided. The driving mechanism 4 adopts a form of combining transmission components such as a motor, a speed reducer, a transmission gear and the like. One end of the driving screw 27 is directly connected to the driving mechanism 4, the driving mechanism 4 drives the driving screw to rotate, and the driving screw drives the driven screw to rotate. The two screw rods have the same structure and are installed in a staggered mode to achieve meshing of the two screw rods. Through setting up a plurality of screws, strengthen the stirring and the grinding effect of screw pump.

The embodiment of this embodiment is the preferred embodiment of the present invention, not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The screw pump comprises a screw cavity (1) and a rotary screw (2) arranged in the screw cavity, wherein a feed inlet (11) and a discharge outlet (12) are formed in the side wall of the screw cavity (1), and the screw pump is characterized in that a first conveying section (21) and a second conveying section (22) are arranged on the rotary screw (2), the feeding direction of the first conveying section (21) is opposite to the feeding direction of the second conveying section (22), the conveying extrusion force of the first conveying section (21) is greater than that of the second conveying section (22) and is suitable for extruding a medium in the screw cavity (1) out of the discharge outlet (12), and a sealing ring (3) for sealing the screw cavity (1) is sleeved at one end, close to the second conveying section (22), of the rotary screw (2).

2. Screw pump according to claim 1, wherein the first delivery section (21) and the second delivery section (22) are each provided with a thread, the direction of rotation of the thread on the first delivery section (21) being opposite to the direction of rotation of the thread on the second delivery section (22).

3. Screw pump according to claim 2, wherein the pitch of the first delivery sector (21) is the same as the pitch of the second delivery sector (22), the length of the first delivery sector (21) being greater than the length of the second delivery sector (22).

4. Screw pump according to claim 2, wherein the length of the first delivery sector (21) is the same as the length of the second delivery sector (22), the pitch of the first delivery sector (21) being smaller than the pitch of the second delivery sector (22).

5. Screw pump according to claim 1, wherein a third conveying section (23) is provided on the rotating screw (2) close to the feed inlet (11), the third conveying section (23) being fed in the same direction as the first conveying section (21).

6. Screw pump according to claim 1, wherein the rotating screw (2) is provided with a first grinding section (24), the first grinding section (24) being fed in the same direction as the first conveying section (21).

7. Screw pump according to claim 6, wherein the first grinding section (24) is provided with a second grinding section (25) on the side close to the discharge opening (12), the second grinding section (25) being fed in the opposite direction to the first grinding section (24).

8. Screw pump according to claim 6, wherein the first grinding section (24) is divided into two sections by a fourth conveying section (26), the feeding direction of the fourth conveying section (26) being arranged opposite to the feeding direction of the first conveying section (21).

9. Screw pump according to claim 1, wherein the rotating screws (2) are at least two, at least one being a driving screw (27) and at least one other being a driven screw (28), the driving screw (27) being in engagement with the driven screw (28), the driving screw (27) being connected at one end to a drive mechanism (4).