CN212898906U

CN212898906U - Large-displacement multi-screw pump

Info

Publication number: CN212898906U
Application number: CN202021050142.6U
Authority: CN
Inventors: 赵炜; 高青; 曹国纬; 叶子兆; 王雪虹
Original assignee: Hangzhou Sanyang Pump Co ltd
Current assignee: Hangzhou Sanyang Pump Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-04-06
Anticipated expiration: 2030-06-09

Abstract

The utility model belongs to the technical field of the screw pump, especially, relate to a big discharge capacity many screw pump. The utility model discloses, comparatively complicated to big discharge screw pump device overall structure among the prior art, dismouting difficulty problem provides a big discharge many screw pump, including screw pump subassembly and the actuating mechanism who is connected with the drive of screw pump subassembly, still be equipped with the synchronizing assembly who is connected with the actuating mechanism drive between screw pump subassembly and the actuating mechanism, screw pump subassembly is equipped with at least two sets ofly and all is connected with synchronizing assembly, and the collection feed liquor pipe is linked together with every screw pump subassembly respectively, the one end that synchronizing assembly was kept away from to the screw pump subassembly still is equipped with the collection drain pipe, the collection drain pipe is linked together with every screw pump subassembly respectively. The utility model discloses a parallelly connected purpose that sets up a plurality of screw pump subassemblies and realize the increase discharge capacity, simple structure, easy dismounting.

Description

Large-displacement multi-screw pump

Technical Field

The utility model belongs to the technical field of the screw pump, especially, relate to a big discharge capacity many screw pump.

Background

The screw pump is a rotor type displacement pump. Under the condition of large discharge capacity requirement, the prior art mostly adopts the mode of increasing the number of rotors and selects a multi-screw pump for conveying, namely, one driving screw rod is utilized to drive a plurality of transmission screw rods to realize conveying. Therefore, the whole structure of the device is complex and the device is difficult to disassemble and assemble.

For example, the chinese utility model patent discloses a light three-screw pump [ application number: 201821224798.8], the utility model comprises a pump body, a front cover, a rear cover, a driving screw, a driven screw and a pressure relief component; one end of the pump body is connected with the front cover, the other end of the pump body is connected with the rear cover, the driving screw and the driven screw are arranged in the upper cavity, and the pressure relief assembly is arranged in the lower cavity; the pump body, the front cover and the rear cover are made of LY12 aluminum alloy, and the driving screw rod and the driven screw rod are made of 38CrMoAl alloy steel.

The utility model has the advantages of reducing the weight of the upper screw pump, but the problem is not solved yet.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a big discharge capacity many screw pumps of carrying discharge capacity big, simple structure.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a big many screw pumps of discharge, includes screw pump subassembly and the actuating mechanism who is connected with the screw pump subassembly drive, still be equipped with the synchronizing assembly who is connected with the actuating mechanism drive between screw pump subassembly and the actuating mechanism, screw pump subassembly is equipped with at least two sets ofly and all is connected with synchronizing assembly, and the collection feed liquor pipe is linked together with every screw pump subassembly respectively, the one end that synchronous assembly was kept away from to screw pump subassembly still is equipped with the collection drain pipe, the collection drain pipe is linked together with every screw pump subassembly respectively.

In the large-displacement multi-screw pump, the screw pump component comprises a suction chamber and a discharge chamber which are communicated with each other, the suction chamber is communicated with the integrated liquid inlet pipe, the discharge chamber is communicated with the integrated liquid outlet pipe, a stator is arranged between the suction chamber and the discharge chamber, a rotor is positioned in the stator, one end, away from the discharge chamber, of the rotor is connected with an intermediate shaft through a universal joint component, one end, away from the rotor, of the intermediate shaft is connected with an input shaft through the universal joint component, an output shaft is rotationally connected with the base through a bearing, and one end, away from the intermediate shaft, of the output shaft is in driving connection with the synchronizing component.

In the large-displacement multi-screw pump, the universal joint assembly comprises a first connecting part fixedly connected to the intermediate shaft and a second connecting part fixedly connected to the rotor, a spherical raised head protrudes from the surface of the first connecting part or the second connecting part, an inward-concave connecting groove is formed in the surface of the other connecting part, the spherical raised head is located in the connecting groove, the large-displacement multi-screw pump further comprises a transmission sealing sleeve sleeved outside the first connecting part and the second connecting part, and the transmission sealing sleeve is circumferentially and fixedly connected with the first connecting part and the second connecting part.

In the large-displacement multi-screw pump, the transmission sealing sleeve comprises a sleeve body sleeved outside the first connecting part and the second connecting part, two groups of transmission convex teeth protrude from the inner surface of the pipeline body, the side surfaces of the first connecting part and the second connecting part are both provided with transmission grooves which are sunken inwards, the two groups of transmission convex teeth respectively extend into the transmission grooves on the surface of the first connecting part and the transmission grooves on the surface of the second connecting part, and the transmission convex teeth can be pressed on the first connecting part and the second connecting part by rotating the sleeve body.

In the large-displacement multi-screw pump, the width of at least one transmission groove is larger than the thickness of the transmission convex teeth, and an adjusting gap is formed between the spherical convex head and the bottom surface of the connecting groove.

In the large-displacement multi-screw pump, each group of the transmission convex teeth comprises at least two transmission convex teeth, and the transmission convex teeth of the same group are uniformly distributed along the circumferential direction of the inner surface of the pipe sleeve body.

In the large-displacement multi-screw pump, the suction chamber comprises a suction chamber shell and a suction cavity positioned in the suction chamber shell, the suction chamber shell is provided with a suction inlet communicated with the integrated liquid inlet pipe, the suction inlet is communicated with the suction cavity, the intermediate shaft is positioned in the suction cavity, the bottom end of the suction chamber shell is also provided with a discharge port communicated with the suction cavity, and the plug is detachably connected in the discharge port.

In the large-displacement multi-screw pump, the bracket is arranged between the stator and the suction chamber, the first bolt sequentially penetrates through the side wall of the suction chamber and the bracket, the second bolt sequentially penetrates through the side wall of the stator and the bracket, and the thread direction of the first bolt is opposite to that of the second bolt.

In the large-displacement multi-screw pump, the included angle alpha between the axial lead of the rotor and the axial lead of the intermediate shaft is 1-10 degrees.

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

1. the utility model discloses a parallelly connected purpose that sets up a plurality of screw pump subassemblies and realize the increase discharge capacity, simple structure, easy dismounting.

2. The utility model discloses a universal joint subassembly adopts spherical raised head and coupling groove's clearance connection mode, realizes that the everything rotates, compares in the more nimble when self-adaptation angular adjustment of the everything connecting piece among the prior art, has guaranteed rotor pivoted stability.

Drawings

Fig. 1 is a top view of the present invention;

FIG. 2 is a cross-sectional view of a screw pump assembly;

FIG. 3 is an enlarged view at A in FIG. 2;

in the figure: the device comprises a suction chamber 1, a discharge chamber 2, a stator 3, a rotor 4, a universal joint component 5, an intermediate shaft 6, an input shaft 7, a bearing 8, a base 9, a suction chamber shell 11, a suction cavity 12, a suction inlet 13, a discharge outlet 14, a plug 15, a bracket 16, a first bolt 17, a second bolt 18, a first connecting part 51, a second connecting part 52, a spherical nose 53, a connecting groove 54, a transmission sealing sleeve 55, a pipeline body 56, a transmission convex tooth 57, a transmission groove 58, an adjusting gap 59, a screw pump component 100, a driving mechanism 200, a synchronous component 300, a liquid collecting pipe 400 and a liquid collecting pipe 500.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, a large-displacement multi-screw pump includes a screw pump assembly 100 and a driving mechanism 200 drivingly connected to the screw pump assembly 100, the driving mechanism 200 may be a driving motor, a synchronizing assembly 300 drivingly connected to the driving mechanism 200 is further disposed between the screw pump assembly 100 and the driving mechanism 200, the synchronizing assembly 300 may be a commonly used synchronizing driving structure in the prior art, for example, gears that mesh with each other may be used as long as the screw pump assembly 100 is synchronously driven, the screw pump assembly 100 is provided with at least two sets of components and is connected to the synchronizing assembly 300, an integrated liquid inlet pipe 400 is respectively communicated with each screw pump assembly 100, an integrated liquid outlet pipe 500 is further disposed at one end of the screw pump assembly 100 away from the synchronizing assembly 300, and the integrated liquid outlet pipe 500 is respectively communicated with each screw pump assembly 100.

The utility model discloses, during the use, start actuating mechanism 200, treat that the transport medium inhales to screw pump assembly 100 in through set feed liquor pipe 400, actuating mechanism 200 realizes through drive screw pump assembly 100 that the transport medium will be treated by set drain pipe 500 discharges. Therefore, the utility model discloses a parallelly connected a plurality of screw pump assembly 100 of group that set up realizes the purpose of increase discharge capacity, simple structure, easy dismounting. Meanwhile, the parts can be detachably connected through flanges, so that the parts are convenient to replace, and the whole device is convenient to structurally modify, for example, the number of the screw pump assemblies 100 is increased or reduced according to actual needs.

Referring to fig. 1 and 2, the screw pump assembly 100 includes a suction chamber 1 and a discharge chamber 2 which are communicated with each other, the suction chamber 1 is communicated with a collective liquid inlet pipe 400, the discharge chamber 2 is communicated with a collective liquid outlet pipe 500, a stator 3 is disposed between the suction chamber 1 and the discharge chamber 2, a rotor 4 is located in the stator 3, one end of the rotor 4 away from the discharge chamber 2 is connected with an intermediate shaft 6 through a universal joint assembly 5, one end of the intermediate shaft 6 away from the rotor 4 is connected with an input shaft 7 through the universal joint assembly 5, the output shaft 7 is rotatably connected with a base 9 through a bearing 8, and one end of the output shaft 7 away from the intermediate shaft 6 is drivingly connected with a synchronizing assembly 300.

The universal joint assembly 5 may be a specific structure capable of realizing universal rotation in the prior art, for example, a universal joint, but preferably, as shown in fig. 3, the universal joint assembly 5 includes a first connecting portion 51 fixedly connected to the intermediate shaft 6 and a second connecting portion 52 fixedly connected to the rotor 4, a ball projection 53 protrudes from a surface of the first connecting portion 51 or the second connecting portion 52, and a connecting recess 54 recessed inward is formed in a surface of the other connecting portion, so that the ball projection 53 and the connecting recess 54 have a larger contact area when contacting each other, thereby reducing pressure and damage between components. Meanwhile, the contact surface is arc-shaped, which is beneficial to force dispersion. The ball-shaped raised head 53 is positioned in the connecting groove 54, and further comprises a transmission sealing sleeve 55 sleeved outside the first connecting part 51 and the second connecting part 52, wherein the transmission sealing sleeve 55 is fixedly connected with the first connecting part 51 and the second connecting part 52 in the circumferential direction. The transmission sealing sleeve 55 comprises a sleeve body 56 sleeved outside the first connecting portion 51 and the second connecting portion 52, two sets of transmission convex teeth 57 protrude from the inner surface of the sleeve body 56, the side surfaces of the first connecting portion 51 and the second connecting portion 52 are both provided with transmission grooves 58 which are recessed inwards, the two sets of transmission convex teeth 57 respectively extend into the transmission grooves 58 on the surface of the first connecting portion 51 and the transmission grooves 58 on the surface of the second connecting portion 52, and the transmission convex teeth 57 can be pressed on the first connecting portion 51 and the second connecting portion 52 by rotating the sleeve body 56. The side surfaces of the first connecting portion 51 and the second connecting portion 52 are respectively provided with an arc-shaped groove, namely a transmission groove 58, the transmission convex tooth 57 is positioned in the transmission groove 58, when the intermediate shaft 6 rotates, the end portion of the transmission groove 58 is pressed on the transmission convex tooth 57 to apply a circumferential rotating force to the transmission convex tooth 57, the transmission is carried out through the transmission sealing sleeve 55, the transmission convex tooth 57 on the other side is pressed on the end portion of the transmission groove 58 to apply a circumferential rotating force to the transmission groove 58, and therefore the rotation is transmitted to the rotor 4, and the rotor 4 rotates.

When the pipeline connecting device is used, the driving mechanism 200 drives the input shaft 7 and transmits the input shaft to the rotor 4 through the intermediate shaft 6, and in the rotating process, the two groups of transmission convex teeth 57 on the inner surface of the pipeline body 56 are respectively pressed on the side surfaces of the first connecting part 51 and the second connecting part 52, and have circumferential rotation interaction force between the two groups of transmission convex teeth, so that transmission is realized.

Preferably, at least one of the drive recesses 58 has a width greater than the thickness of the drive projection 57, and an adjustment gap 59 is provided between the ball nose 53 and the bottom of the coupling recess 54, i.e. there is a gap in the axial direction between the drive projection 57 and the drive recess 58, so that a relative movement of the ball nose 53 and the coupling recess 54 over a small distance in the axial direction is ensured, which ensures flexibility of the coupling. The utility model discloses a universal joint subassembly 5 adopts spherical raised head 53 and coupling groove 54's clearance connection mode, realizes that the everything rotates, compares in the more nimble of the everything connecting piece among the prior art when self-adaptation angular adjustment, has guaranteed rotor 4 pivoted stability.

Preferably, each set of the transmission teeth 57 comprises at least two transmission teeth 57, and the transmission teeth 57 of the same set are uniformly distributed along the circumferential direction of the inner surface of the pipe sleeve body 56. This ensures stability of the transmission process.

As shown in fig. 2, the suction chamber 1 includes a suction chamber housing 11 and a suction cavity 12 located in the suction chamber housing 11, a suction inlet 13 is provided on the suction chamber housing 11 and is communicated with the liquid inlet manifold 400, the suction inlet 13 is communicated with the suction cavity 12, the intermediate shaft 6 is located in the suction cavity 12, a discharge outlet 14 is further provided at the bottom end of the suction chamber housing 11 and is communicated with the suction cavity 12, and a plug 15 is detachably connected in the discharge outlet 14.

In use, a medium to be conveyed is firstly sucked into the suction cavity 12 through the suction port 13, and the plug 15 is blocked in the discharge port 14. After the transportation is completed, the plug 15 is pulled out of the discharge opening 14, so that the inside of the suction cavity 12 can be cleaned conveniently.

As shown in fig. 2, a bracket 16 is disposed between the stator 3 and the suction chamber 1, a first bolt 17 penetrates through the side wall of the suction chamber 1 and the bracket 16 in sequence, a second bolt 18 penetrates through the side wall of the stator 3 and the bracket 16 in sequence, and the thread direction of the first bolt 17 is opposite to the thread direction of the second bolt 18. During the installation, one of them bolt is used for tentatively fixing, recycles another bolt and strains, the utility model discloses utilize first bolt 17 and second bolt 18 opposite screw thread to realize stator 3, support 16 and suction chamber 1 three between the connection, compact structure, easy dismounting.

As shown in FIG. 2, the included angle alpha between the axial lead of the rotor 4 and the axial lead of the intermediate shaft 6 is 1-10 degrees. The provision of a small angle of inclination facilitates the entry of the medium to be conveyed, which is sucked into the cavity 12, into the stator 3 while ensuring the transmission.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the suction chamber 1, the discharge chamber 2, the stator 3, the rotor 4, the universal joint assembly 5, the intermediate shaft 6, the input shaft 7, the bearing 8, the housing 9, the suction chamber housing 11, the suction cavity 12, the suction port 13, the discharge port 14, the plug 15, the bracket 16, the first bolt 17, the second bolt 18, the first connection portion 51, the second connection portion 52, the ball nose 53, the connection groove 54, the driving seal 55, the pipe body 56, the driving protrusions 57, the driving grooves 58, the adjustment gap 59, the screw pump assembly 100, the driving mechanism 200, the synchronizing assembly 300, the collecting inlet pipe 400, the collecting outlet pipe 500, etc., are more used herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a big many screw pumps of discharge, includes screw pump subassembly (100) and actuating mechanism (200) of being connected with screw pump subassembly (100) drive, its characterized in that: still be equipped with between screw pump subassembly (100) and actuating mechanism (200) with actuating mechanism (200) drive connection's synchronizing assembly (300), screw pump subassembly (100) are equipped with at least two sets ofly and all are connected with synchronizing assembly (300), and collection feed liquor pipe (400) is linked together with every screw pump subassembly (100) respectively, the one end that synchronizing assembly (300) were kept away from in screw pump subassembly (100) still is equipped with collection drain pipe (500), collection drain pipe (500) are linked together with every screw pump subassembly (100) respectively.

2. The large displacement multiple screw pump of claim 1, wherein: screw pump subassembly (100) are including suction chamber (1) and discharge chamber (2) that communicate each other, suction chamber (1) is linked together with set feed liquor pipe (400), discharge chamber (2) are linked together with set drain pipe (500), are equipped with stator (3) between suction chamber (1) and discharge chamber (2), and rotor (4) are located stator (3), the one end that discharge chamber (2) were kept away from in rotor (4) is connected with jackshaft (6) through universal joint subassembly (5), the one end that rotor (4) were kept away from in jackshaft (6) is connected with input shaft (7) through universal joint subassembly (5), input shaft (7) are rotated with frame (9) through bearing (8) and are connected, the one end that jackshaft (6) were kept away from in input shaft (7) is connected with synchronous subassembly (300) drive.

3. The large displacement multiple screw pump of claim 2, wherein: the universal joint component (5) comprises a first connecting portion (51) fixedly connected to the intermediate shaft (6) and a second connecting portion (52) fixedly connected to the rotor (4), a spherical raised head (53) protrudes from the surface of the first connecting portion (51) or the second connecting portion (52), an inward concave connecting groove (54) is formed in the surface of the other connecting portion, the spherical raised head (53) is located in the connecting groove (54), the universal joint component further comprises a transmission sealing sleeve (55) sleeved outside the first connecting portion (51) and the second connecting portion (52), and the transmission sealing sleeve (55) is circumferentially and fixedly connected with the first connecting portion (51) and the second connecting portion (52).

4. The large displacement multiple screw pump of claim 3, wherein: the transmission sealing sleeve (55) comprises a sleeve body (56) sleeved outside the first connecting part (51) and the second connecting part (52), two groups of transmission convex teeth (57) are arranged on the inner surface of the sleeve body (56) in a protruding mode, inwards concave transmission grooves (58) are formed in the side faces of the first connecting part (51) and the second connecting part (52), the two groups of transmission convex teeth (57) respectively extend into the transmission grooves (58) in the surface of the first connecting part (51) and the transmission grooves (58) in the surface of the second connecting part (52), and the transmission convex teeth (57) can be pressed on the first connecting part (51) and the second connecting part (52) by rotating the sleeve body (56).

5. The large displacement multiple screw pump of claim 4, wherein: at least one drive recess (58) has a width greater than the thickness of the drive tooth (57), and an adjustment gap (59) is provided between the ball nose (53) and the bottom of the coupling recess (54).

6. The large displacement multiple screw pump of claim 4, wherein: each group of transmission convex teeth (57) comprises at least two transmission convex teeth (57), and the transmission convex teeth (57) in the same group are uniformly distributed along the circumferential direction of the inner surface of the pipe sleeve body (56).

7. The large displacement multiple screw pump of claim 2, wherein: the suction chamber (1) comprises a suction chamber shell (11) and a suction cavity (12) located in the suction chamber shell (11), a suction inlet (13) communicated with the integrated liquid inlet pipe (400) is formed in the suction chamber shell (11), the suction inlet (13) is communicated with the suction cavity (12), the intermediate shaft (6) is located in the suction cavity (12), a drain hole (14) communicated with the suction cavity (12) is further formed in the bottom end of the suction chamber shell (11), and a plug (15) is detachably connected into the drain hole (14).

8. The large displacement multiple screw pump of claim 2, wherein: be equipped with between stator (3) and suction chamber (1) support (16), first bolt (17) run through in proper order suction chamber's (1) lateral wall and support (16), and second bolt (18) run through in proper order stator's (3) lateral wall and support (16), the screw thread direction of first bolt (17) is opposite with the screw thread direction of second bolt (18).

9. The large displacement multiple screw pump of claim 2, wherein: the included angle alpha between the axial lead of the rotor (4) and the axial lead of the intermediate shaft (6) is 1-10 degrees.