Multifunctional stainless steel magnetic drive pump

Abstract

The utility model discloses a multifunctional stainless steel magnetic drive pump, and particularly relates to the technical field of magnetic drive pumps, the multifunctional stainless steel magnetic drive pump comprises a shell, an impeller, a pump cover, a shaft sleeve, a front bearing, a rear bearing, a retaining ring, a main shaft, a rotor, a spacer bush, an outer magnet and a support, the impeller is fixedly installed at the rear end of the shell through a bolt, and an impeller cavity is formed by the impeller and the interior of the shell. According to the multifunctional stainless steel magnetic drive pump, the pump cover is independently connected with the shell and the support through the bolts, and the disassembly difficulty is reduced during maintenance; meanwhile, the pump cover is provided with a bearing cooling circulation hole and a pump cavity inner circulation hole, after entering the pump cavity of the shell, conveying liquid flows to the middle positions of the front bearing and the rear bearing and the position of the spacer bush through the bearing cooling circulation hole and the pump cavity inner circulation hole, and the conveying liquid flowing to the middle portions of the front bearing and the rear bearing can lubricate the opposite grinding faces of the front bearing, the rear bearing and the shaft sleeve; and then the lubricating oil flows to the front retaining ring from the bearing backflow groove to lubricate the opposite grinding surface, so that the lubricating and cooling effects are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnetic force pump technical field, especially in a kind of multifunctional stainless steel magnetic force pump. BACKGROUND

[0002] The existing pump cover is generally embedded in the shell, then the spacer sleeve is pressed to hold the pump cover, and it is tightened by connecting the support through the stud; when assembling and maintaining, it is inconvenient to maintain and disassemble in the narrow field environment due to the series connection. At the same time, the pump cover is embedded in the shell, and is cast with the shape, with thin wall thickness. UTILITY MODEL CONTENTS

[0003] The main purpose of the utility model is to provide a kind of multifunctional stainless steel magnetic force pump, which can effectively solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0005] A kind of multifunctional stainless steel magnetic force pump, including shell, impeller, pump cover, shaft sleeve, front bearing, rear bearing, retainer ring, main shaft, rotor, spacer sleeve, outer magnet and support, the impeller is fixedly installed at the rear end of shell by bolt and forms impeller cavity with the inside of shell, the spacer sleeve and support are both installed at the rear of pump cover by bolt, and the support is sleeved on the outside of spacer sleeve, the center of pump cover is provided with mounting hole, the front and rear sides of mounting hole are both provided with shaft sleeve, the front bearing and rear bearing are respectively sleeved on the outside of the shaft sleeve of front and rear sides, the front end of main shaft passes through the shaft sleeve of front side and is connected with impeller, the rear end of main shaft passes through the shaft sleeve of rear side and extends to the inside of spacer sleeve and is installed with rotor, the rear end of support is fixedly installed with bearing box by bolt, the inside of bearing box is installed with transmission shaft, the front end of transmission shaft extends to the inside of support and is connected with outer magnet, the front end of outer magnet is covered on the outside of spacer sleeve, the top wall of pump cover mounting hole is provided with rear cavity backflow hole communicated with outside, the outside of rear cavity backflow hole is installed with forced backflow pipeline, the front end upper portion of pump cover is provided with bearing cooling circulation hole, the front end lower portion of pump cover is provided with pump cavity inner circulation hole, the inside of main shaft is provided with main shaft backflow hole for the communication of impeller cavity and spacer sleeve, the bottom of pump cover is provided with drainage hole communicated with pump cavity inner circulation hole, the impeller cavity, rear cavity backflow hole, spacer sleeve inner cavity, main shaft backflow hole, pump cavity inner circulation hole, drainage hole and impeller backflow hole are interconnected.

[0006] Preferably, a plurality of impeller backflow holes are provided between the inner wall of the impeller and the rear end.

[0007] Preferably, the retainer ring is provided with two front and rear sides respectively sleeved on the outer surface of the main shaft, the front retainer ring is located between the impeller and the front bearing, and the rear retainer ring is located between the rotor and the rear bearing.

[0008] Preferably, the pump cover is in the shape of an I, and the pump cover is provided with flanges at the front and back and is connected to the front and back housings and the support

[0009] Compared with the prior art, the multifunctional stainless steel magnetic pump has the following beneficial effects:

[0010] The utility model discloses a multifunctional stainless steel magnetic pump, and the pump cover is separately connected with the shell and the support through bolts, which reduces the dismounting difficulty during maintenance, bearing cooling circulation holes and pump cavity internal circulation holes are arranged simultaneously, and the conveying liquid enters the shell pump cavity, passes through the bearing cooling circulation holes and the pump cavity internal circulation holes, and flows to the middle positions of the front bearing and the rear bearing and the spacer sleeve positions respectively, the conveying liquid flowing to the middle parts of the front bearing and the rear bearing lubricates the abrading surfaces of the front bearing, the rear bearing and the shaft sleeve, then flows to the front retainer ring position from the bearing backflow groove to lubricate the abrading surfaces, and the lubrication and cooling effects are improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a schematic diagram of the overall structure of the utility model;

[0012] Fig. 2 is a schematic diagram of the utility model at position A. Figure 2

[0013] In the drawings: 1, shell; 2, impeller; 3, pump cover; 4, shaft sleeve; 5, front bearing; 6, rear bearing; 7, retainer ring; 8, main shaft; 9, rotor; 10, spacer sleeve; 11, outer magnet; 12, support; 13, bearing box; 14, transmission shaft; 15, bearing cooling circulation hole; 16, forced backflow pipeline; 17, rear cavity backflow hole; 18, main shaft backflow hole; 19, pump cavity internal circulation hole; 20, liquid discharge hole; 21, impeller backflow hole. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0015] As shown in Figs. 1-2, a multifunctional stainless steel magnetic pump includes a shell 1, an impeller 2, a pump cover 3, a shaft sleeve 4, a front bearing 5, a rear bearing 6, a retainer ring 7, a main shaft 8, a rotor 9, a spacer sleeve 10, an outer magnet 11 and a support 12, the impeller 2 is fixedly installed at the rear end of the shell 1 through bolts and forms an impeller cavity with the inside of the shell 1, the spacer sleeve 10 and the support 12 are both installed at the rear part of the pump cover 3 through bolts, and the support 12 is sleeved on the main shaft 8, the outer magnet 11 is sleeved on the main shaft 8 and is connected to the support 12, the rotor 9 is sleeved on the main shaft 8 and is connected to the outer magnet 11, the shaft sleeve 4 is sleeved on the main shaft 8 and is connected to the front bearing 5 and the rear bearing 6, the front bearing 5 is connected to the front part of the pump cover 3, the rear bearing 6 is connected to the rear part of the pump cover 3, the retainer ring 7 is connected to the front bearing 5 and the rear bearing 6, and the transmission shaft 14 is connected to the impeller 2 and the main shaft 8.

[0016] ​The center of the pump cover 3 is provided with a mounting hole, the front and rear sides of the mounting hole are provided with shaft sleeves 4, the front bearing 5 and the rear bearing 6 are respectively sleeved outside the front and rear shaft sleeves 4, the front end of the main shaft 8 penetrates through the front shaft sleeve 4 and is connected with the impeller 2, the rear end of the main shaft 8 penetrates through the rear shaft sleeve 4 and extends into the spacer sleeve 10 and is provided with the rotor 9, the rear end of the support 12 is fixedly provided with the bearing box 13 through bolts, the inside of the bearing box 13 is provided with the transmission shaft 14, the front end of the transmission shaft 14 extends into the support 12 and is connected with the outer magnet 11, the front end of the outer magnet 11 is covered outside the spacer sleeve 10, the top wall of the mounting hole of the pump cover 3 is provided with the rear cavity backflow hole 17 which is communicated with the outside, the outside of the rear cavity backflow hole 17 is provided with the forced backflow pipeline 16, the front end of the pump cover 3 is provided with the bearing cooling circulation hole 15, the front end of the pump cover 3 is provided with the pump cavity internal circulation hole 19, the inside of the main shaft 8 is provided with the main shaft backflow hole 18 which is used for the communication between the impeller cavity and the spacer sleeve 10, the side of the main shaft 8 is provided with the side hole which is communicated with the main shaft backflow hole 18, the bottom of the pump cover 3 is provided with the liquid discharge hole 20 which is communicated with the pump cavity internal circulation hole 19, the impeller cavity, the rear cavity backflow hole 17, the inside of the spacer sleeve 10, the main shaft backflow hole 18, the pump cavity internal circulation hole 19, the liquid discharge hole 20 and the impeller backflow hole 21 are communicated with each other, the inside wall of the impeller 2 and the rear end are provided with a plurality of impeller backflow holes 21, the stop ring 7 is provided with two front and rear sides which are respectively sleeved outside the outer surface of the main shaft 8, the front stop ring 7 is located between the impeller 2 and the front bearing 5, and the rear stop ring 7 is located between the rotor 9 and the rear bearing 6.

[0017] The pump cover 3 is in the shape of an I, the middle part is hollowed out and reserved with enough heat preservation cavity positions, a layer of coiled plate of the same material is welded outside, and the threaded communication pipe which is communicated between the front and rear heat preservation cavities and the flange which is communicated with the outside are welded, so that the heat preservation pump cover can be transformed.

[0018] The working principle of the utility model is as follows: the forced backflow pipeline 16 which is connected outside the middle of the pump cover 3 can make the buffer solution which does not pollute the medium flow to the inside of the spacer sleeve 10 and the middle part of the front bearing 5 and the rear bearing 6 through the rear cavity backflow hole 17, so that the bearing can be effectively flushed and lubricated, a liquid discharge hole 20 is arranged at the lowermost end of the pump cover 3, when liquid needs to be discharged, the liquid can be directly discharged, when normally operating, the liquid which enters the pump cavity of the shell 1 will flow to the middle positions of the front bearing 5 and the rear bearing 6 and the position of the spacer sleeve 10 through the bearing cooling circulation hole 15 and the pump cavity internal circulation hole 19 respectively, the liquid which flows to the middle parts of the front bearing 5 and the rear bearing 6 will lubricate the front bearing 5 and the rear bearing 6, and the liquid which flows to the position of the spacer sleeve 10 will lubricate the rotor 9 and the main shaft 8.

[0019] The bearing 5, the rear bearing 6 and the bushing 4 are abraded surfaces, then the lubricating abraded surfaces from the bearing backflow groove flow to the front anti-back ring 7, and finally flow back to the front impeller 2 inlet from the impeller backflow hole 21 and the main shaft 8 in the middle part side.

[0020] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-functional stainless steel magnetic drive pump characterized by: The utility model relates to a pump, including casing (1), impeller (2), pump cover (3), shaft sleeve (4), front bearing (5), rear bearing (6), retreat ring (7), main shaft (8), rotor (9), spacer sleeve (10), outer magnetic (11) and support (12), impeller (2) is fixed by bolt installation in casing (1) rear end and with casing (1) inside forms impeller chamber, spacer sleeve (10) and support (12) all are installed in pump cover (3) rear portion, and support (12) is set in the outside of spacer sleeve (10), the center of pump cover (3) is provided with mounting hole, and the front and rear sides of mounting hole are all provided with shaft sleeve (4), front bearing (5) and rear bearing (6) are set in the outside of the shaft sleeve (4) of front and rear sides respectively, main shaft (8) front end passes through the shaft sleeve (4) of front side and is connected with impeller (2), main shaft (8) rear end passes through the shaft sleeve (4) of rear side and extends to spacer sleeve (10) and is installed with rotor (9), the rear end of support (12) is fixed by bolt and is installed with bearing box (13), bearing box (13) is installed with transmission shaft (14) inside, transmission shaft (14) front end penetrates and extends to support (12) and is connected with outer magnetic (11), outer magnetic (11) front end covers the outside of spacer sleeve (10), pump cover (3) mounting hole top wall is opened rear reflux hole (17) of communication with outside, rear reflux hole (17) outside is installed with forced reflux pipeline (16), pump cover (3) front end upper portion is opened bearing cooling circulation hole (15), pump cover (3) front end lower portion is opened pump cavity inner circulation hole (19), main shaft (8) inside is opened main shaft reflux hole (18) for the communication of impeller chamber and spacer sleeve (10) inside, pump cover (3) bottom is opened and is communicated with pump cavity inner circulation hole (19) inner discharge hole (20), impeller chamber, rear reflux hole (17), spacer sleeve (10) inner chamber, main shaft reflux hole (18), pump cavity inner circulation hole (19), discharge hole (20) and impeller reflux hole (21) are communicated.

2. The multi-functional stainless steel magnetic drive pump according to claim 1, characterized in that: A plurality of impeller reflux holes (21) are arranged between the inner wall of the impeller (2) and the rear end.

3. The multi-functional stainless steel magnetic drive pump according to claim 1, characterized in that: The retreat ring (7) is provided with two front and rear sides, which are respectively sleeved on the outer surface of the main shaft (8). The front retreat ring (7) is located between the impeller (2) and the front bearing (5), and the rear retreat ring (7) is located between the rotor (9) and the rear bearing (6).

4. The multi-functional stainless steel magnetic drive pump according to claim 1, characterized in that: The pump cover (3) is in the shape of an I-beam, and the pump cover (3) has flanges at the front and rear ends, which are connected to the casing (1) and the support (12), respectively.

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