Novel multi-stage pump with shaft capable of being spliced and disassembled

Abstract

The utility model relates to the field of multi-stage pumps, in particular to a novel multi-stage pump with a shaft capable of being spliced and disassembled, which comprises a first connecting shaft. A first groove body is formed in the front end of the first connecting shaft, a first threaded sleeve used for being connected with secondary fixing is fixedly connected to the rear end of the inner wall of the first groove body, a first containing groove is formed in the rear end of the inner wall of the first groove body in a penetrating mode, and a first threaded groove line is formed in the inner wall of the first groove body. The arc-shaped outer wall of the rear end of the first connecting shaft is provided with a first threaded convex line. In the installation process, the first connecting shaft and the second connecting shaft are sequentially installed at the rear end of the main shaft in a double-thread fixing mode, and the large threads and the small threads are fixedly installed in the opposite directions, so that the overall installation strength of the multi-stage pump can be improved; the problem that in the prior art, a shaft rod with the fixed length needs to be used for installing a pump body with the fixed stage number is solved, and flexible installation is achieved through the multi-stage pump body.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of multistage pump, concretely relates to a novel multistage pump with splicable and detachable shaft. BACKGROUND

[0002] The pump body is internally provided with 2-12 impellers (or even more), the impellers are connected in series through the same shaft, each impeller is provided with a guide vane or volute for converting kinetic energy into pressure energy, each impeller rotates to lift fluid pressure once, and finally superimposes into high lift, and is commonly used in occasions requiring high pressure delivery (such as high-rise water supply, oilfield water injection).

[0003] However, during the assembly of the multistage pump, a shaft segment with a fixed number of impellers mounted thereon is required, and when small or more impellers are required, shaft segments with different lengths need to be selected according to the use.

[0004] In the prior art, the fixed length shaft rod is required to install the pump body with a fixed number of stages, which has certain limitations during installation and is inconvenient for flexible adjustment of the number of pump bodies required during work, resulting in a lack of flexibility during use. CONTENT OF THE UTILITY MODEL

[0005] In order to overcome the problem that the existing multistage pump requires a fixed shaft segment during installation, resulting in a lack of flexibility during installation, a novel multistage pump with splicable and detachable shaft is provided.

[0006] The technical scheme of the utility model is as follows: a novel multistage pump with splicable and detachable shaft, comprising a first connecting shaft, a second connecting shaft and a main shaft, a first groove body is formed in the front end of the first connecting shaft, a first threaded sleeve for secondary fixation is fixedly connected to the rear end of the inner wall of the first groove body, a first placing groove is formed in the rear end of the inner wall of the first groove body, a first threaded groove line is formed in the inner wall of the first groove body, a first threaded convex line is formed in the rear end of the arc-shaped outer wall of the first connecting shaft, a second connecting shaft is arranged at the rear end of the first connecting shaft, a second groove body is formed in the front end of the second connecting shaft, a second threaded groove line is formed in the arc-shaped inner wall of the second groove body, a second threaded sleeve is fixedly connected to the rear end of the inner wall of the second groove body, a first bolt is arranged in the second threaded sleeve, a second placing groove is formed in the rear end of the inner wall of the second groove body, a third threaded convex line is formed in the rear end of the second connecting shaft, the first bolt is threadedly installed in the second threaded sleeve through the first placing groove, and the second sealing ring is matched with the first sealing groove.

[0007] Preferably, a second bolt is placed in the second placing groove, and the second bolt is threadedly installed in the first threaded sleeve through the second placing groove.

[0008] Preferably, the first threaded convex line rear end is provided with a main shaft, the front end of the main shaft is provided with a fourth threaded groove line, and the inner wall rear end of the fourth threaded groove line is provided with a third threaded groove line.

[0009] Preferably, the first threaded convex line rear end is provided with a main shaft, the front end of the main shaft is provided with a fourth threaded groove line, and the inner wall rear end of the fourth threaded groove line is provided with a third threaded groove line.

[0010] Preferably, the first threaded convex line rear end is provided with a main shaft, the front end of the main shaft is provided with a fourth threaded groove line, and the inner wall rear end of the fourth threaded groove line is provided with a third threaded groove line.

[0011] Preferably, the first threaded convex line rear end is provided with a main shaft, the front end of the main shaft is provided with a fourth threaded groove line, and the inner wall rear end of the fourth threaded groove line is provided with a third threaded groove line.

[0012] Preferably, the first threaded convex line rear end is provided with a main shaft, the front end of the main shaft is provided with a fourth threaded groove line, and the inner wall rear end of the fourth threaded groove line is provided with a third threaded groove line.

[0013] The beneficial effects of the utility model are as follows: in the process of installation, the first connecting shaft and the second connecting shaft are installed through the double threaded fixing mode from the rear end of the main shaft, the opposite direction fixing installation formed between the large thread and the small thread can improve the overall installation strength of the multi-stage pump, the problem of needing to use the fixed length shaft rod to install the fixed number of pump bodies in the prior art is solved, and the multi-section pump body is adopted to realize flexible installation. ACCURACY OF DRAWINGS

[0014] Figure 1 The utility model discloses a three -dimensional structure schematic diagram of a vertical section of a novel multi -stage pump of shaft splicing detachable shows.

[0015] Figure 2 The utility model discloses a three -dimensional structure schematic diagram of a vertical section of a novel multi -stage pump of shaft splicing detachable shows.

[0016] Figure 3 The utility model discloses a three -dimensional structure schematic diagram of a vertical section of a novel multi -stage pump of shaft splicing detachable shows.

[0017] Figure 4 The utility model discloses a three -dimensional structure schematic diagram of a vertical section of a novel multi -stage pump of shaft splicing detachable shows.

[0018] Figure 5 The utility model discloses a three -dimensional structure schematic diagram of a vertical section of a novel multi -stage pump of shaft splicing detachable shows.

[0019] The marks in the drawings are: 1, first connecting shaft; 2, first groove body; 3, first threaded groove line; 4, first sealing ring; 5, first threaded sleeve; 6, first threaded convex line; 7, first placing groove; 8, first bolt; 9, first sealing groove; 10, second connecting shaft; 11, second groove body; 12, second threaded groove line; 13, second sealing ring; 14, second threaded sleeve; 15, second placing groove; 16, second sealing groove; 17, main shaft; 18, third threaded groove line; 19, fourth threaded groove line; 20, flow groove; 21, impeller; 22, flow distributor; 23, sealing outer cylinder; 24, second bolt; 25, third threaded convex line; 26, clamping groove. DETAILED DESCRIPTION

[0020] The utility model is further explained below in combination with the drawings and examples.

[0021] Please refer to Figures 1-5 The utility model provides an embodiment: a novel multistage pump with splicable and detachable shafts, comprising a first connecting shaft 1; further comprising a second connecting shaft 10 and a main shaft 17, the front end of the first connecting shaft 1 is provided with a first groove body 2, the rear end of the inner wall of the first groove body 2 is fixedly connected with a first threaded sleeve 5 for connecting secondary fixation, the rear end of the inner wall of the first groove body 2 is provided with a first placing groove 7, the inner wall of the first groove body 2 is provided with a first threaded groove line 3, the rear end of the arc-shaped outer wall of the first connecting shaft 1 is provided with a first threaded convex line 6, the rear end of the first connecting shaft 1 is provided with a second connecting shaft 10 for connection, the front end of the second connecting shaft 10 is provided with a second groove body 11, the arc-shaped inner wall of the second groove body 11 is provided with a second threaded groove line 12, the rear end of the inner wall of the second groove body 11 is fixedly connected with a second threaded sleeve 14, the second threaded sleeve 14 is provided with a first bolt 8, the rear end of the inner wall of the second groove body 11 is provided with a second placing groove 15, the rear end of the second connecting shaft 10 is provided with a third threaded convex line 25, the first bolt 8 is screw-mounted in the second threaded sleeve 14 through the first placing groove 7, the second sealing ring 13 and the first sealing groove 9 are matched, in the installation process, the first connecting shaft 1 and the second connecting shaft 10 are installed in the rear end of the main shaft 17 by the mode of double-threaded fixation in sequence, the installation strength of the multistage pump as a whole can be improved by the opposite direction fixation installation formed between the large thread and the small thread, the problem that the fixed length shaft rod needs to be used to install and fix the pump body of the fixed number of stages in the prior art is solved, and flexible installation is realized by adopting the multistage pump body.

[0022] Please refer to Figures 1-2In the embodiment, the outer wall of the first connecting shaft 1, the second connecting shaft 10 and the main shaft 17 is provided with the impeller 21 and the flow distributor 22, the outer wall of the flow distributor 22 is fixedly connected with the sealing outer cylinder 23, the front end of the impeller 21 is provided with the flow grooves 20 which are uniformly distributed, and the end of the flow distributor 22 and the sealing outer cylinder 23 which are close to each other is provided with the clamping groove 26. When the main shaft 17 drives the subsequent first connecting shaft 1 and the second connecting shaft 10 to rotate, the impeller 21, the flow distributor 22 and the sealing outer cylinder 23 can make the multi-stage pump work.

[0023] Please refer to Figures 3-5 In the embodiment, the second placing groove 15 is provided with the second bolt 24, the second bolt 24 is screwed into the first threaded sleeve 5 through the second placing groove 15, the second bolt 24 is screwed into the front end of the first connecting shaft 1 through the second placing groove 15, the rear end of the first threaded convex line 6 is provided with the main shaft 17, the front end of the main shaft 17 is provided with the fourth threaded groove line 19, the inner wall of the fourth threaded groove line 19 is provided with the third threaded groove line 18 at the rear end, the first connecting shaft 1 is the central structure, the first threaded convex line 6 on the first connecting shaft 1 can be installed on the second threaded groove line 12 in the front end of the second connecting shaft 10 or the fourth threaded groove line 19 of the main shaft 17, the first bolt 8 is matched with the second threaded sleeve 14 and the third threaded groove line 18, the second threaded groove line 12 is matched with the first threaded convex line 6 in screw thread, the third threaded convex line 25 is matched with the first threaded groove line 3 in screw thread, the screw thread installation direction of the first threaded convex line 6 and the third threaded convex line 25 and the screw thread direction of the first bolt 8 and the second bolt 24 are in opposite directions, the front end of the first connecting shaft 1 is fixedly connected with the first sealing ring 4, the rear end of the second connecting shaft 10 is provided with the second sealing groove 16, and the first sealing ring 4 is matched with the second sealing groove 16.

[0024] In the process of installation, the first connecting shaft 1 is installed on the front end of the main shaft 17, the first threaded convex line 6 on the first connecting shaft 1 is threadedly connected with the fourth threaded groove line 19 on the main shaft 17, when the rear end of the main shaft 17 and the front end of the first connecting shaft 1 are mutually adhered, the first first bolt 8 is passed through the first placing groove 7 on the first connecting shaft 1 and is threadedly installed in the third threaded groove line 18 on the main shaft 17, the main shaft 17 and the first connecting shaft 1 are fixedly connected, then the second connecting shaft 10 is placed on the front end of the first connecting shaft 1, the third threaded convex line 25 on the second connecting shaft 10 is threadedly installed in the first threaded groove line 3 on the first connecting shaft 1, then the two second bolts 24 are respectively placed in the second placing groove 15 on the second connecting shaft 10, then are respectively threadedly installed in the two opposite first threaded sleeves 5 for fixation, the large threaded connection direction and the small threaded connection direction are opposite directions, in the overall installation process of the multi-stage pump, the connection stability between the first connecting shaft 1, the second connecting shaft 10 and the main shaft 17 is ensured, and the fourth threaded groove line 19, the impeller 21 and the flow distributor 22 on the outer portion are placed in the shell of the multi-stage pump for work.

Claims

1. A new type of multi-stage pump with shafts that can be spliced and disassembled, comprising a first connecting shaft (1); characterized in that: Also include the second connecting shaft (10) and main shaft (17), the front end of the first connecting shaft (1) is provided with a first slot body (2), the rear end of the inner wall of the first slot body (2) is fixedly connected with a first threaded sleeve (5) for connecting secondary fixation, the rear end of the inner wall of the first slot body (2) is provided with a first placing slot (7), the inner wall of the first slot body (2) is provided with a first thread groove (3), the rear end of the arc outer wall of the first connecting shaft (1) is provided with a first thread convex line (6), the rear end of the first connecting shaft (1) is provided with a second connecting shaft (10) for connection, the front end of the second connecting shaft (10) is provided with a second slot body (11), the arc inner wall of the second slot body (11) is provided with a second thread groove (12), the rear end of the inner wall of the second slot body (11) is fixedly connected with a second threaded sleeve (14), the first bolt (8) is arranged in the second threaded sleeve (14), the rear end of the inner wall of the second slot body (11) is provided with a second placing slot (15), the rear end of the second connecting shaft (10) is provided with a third thread convex line (25), the first bolt (8) is screwed into the second threaded sleeve (14) through the first placing slot (7), the second sealing ring (13) is matched with the first sealing groove (9).

2. A new type of multi-stage pump with shaft splicing and disassembling according to claim 1, characterized in that: The second placing slot (15) is placed with a second bolt (24), the second bolt (24) is screwed into the first threaded sleeve (5) through the second placing slot (15).

3. A new type of multi-stage pump with shaft splicing and disassembling according to claim 1, characterized in that: The rear end of the first thread convex line (6) is provided with a main shaft (17), the front end of the main shaft (17) is provided with a fourth thread groove (19), the rear end of the inner wall of the fourth thread groove (19) is provided with a third thread groove (18).

4. A new type of multi-stage pump with shaft splicing and disassembling according to claim 1, characterized in that: The first bolt (8) is matched with the second threaded sleeve (14) and the third thread groove (18).

5. A new type of multi-stage pump with shaft splicable and detachable according to claim 1, characterized in that: The outer wall of the first connecting shaft (1), the second connecting shaft (10) and the main shaft (17) is provided with an impeller (21) and a flow through device (22), the outer wall of the flow through device (22) is fixedly connected with a sealing outer cylinder (23), the front end of the impeller (21) is provided with uniformly distributed flow grooves (20), the structure formed by the flow through device (22) and the sealing outer cylinder (23) which are close to each other is provided with a clamping groove (26).

6. A new type of multi-stage pump with shaft splicable and detachable according to claim 1, characterized in that: The second thread groove (12) is matched with the first thread convex line (6), the third thread convex line (25) is matched with the first thread groove (3), the screwing direction of the first thread convex line (6) and the third thread convex line (25) is opposite to the screwing direction of the first bolt (8) and the second bolt (24).

7. A new type of multi-stage pump with shaft splicable and detachable according to claim 1, characterized in that: The front end of the first connecting shaft (1) is fixedly connected with a first sealing ring (4), the rear end of the second connecting shaft (10) is provided with a second sealing groove (16), the first sealing ring (4) is matched with the second sealing groove (16).

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