Key-fixed sealing ring structure for double suction pump

Abstract

The utility model discloses a key-fixed sealing ring structure for a double suction pump, which comprises a pump body, two impellers are arranged in the pump body, and sealing rings are arranged on the pump body and at the sealing positions of the impellers. The sealing structure has the advantages that the second connecting groove is formed in the sealing position of the pump body and the impeller in advance, and the first connecting groove with the screw hole is reserved in the sealing ring, so that when the pump body and the impeller are sealed, the connecting key block is inserted into the first connecting groove and the second connecting groove and is matched with the hexagonal screw for locking, and the sealing structure is simple and convenient to operate. According to the sealing structure, the first connecting groove and the second connecting groove are correspondingly formed to achieve rapid installation of the sealing ring between the pump body and the impeller so as to ensure rapid sealing between the pump body and the impeller, and under the sealing mode, the sealing ring can be installed between the pump body and the impeller only by correspondingly forming the first connecting groove and the second connecting groove. The tedious operation of forming a ring groove in the pump body and reserving a ring table on the sealing ring is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sealing ring structure for double-suction pump technical field, concretely relates to a sealing ring structure for double-suction pump with key fixing. BACKGROUND

[0002] The sealing ring is commonly known as a mouth ring, is installed between the volute and the impeller, and is a key part for efficient and stable operation of the water pump. If the gap of the sealing ring of the double-suction pump is too large, the water in the high-pressure area of the water pump will flow to the low-pressure area through the gap, which reduces the efficiency of the water pump. If the gap is too small, friction will increase mechanical loss. Therefore, it is necessary to install the sealing ring for the double-suction pump.

[0003] At present, the installation method of the sealing ring of the double-suction pump in the industry is mostly to open a groove on the pump body, process a boss for installation on the sealing ring, and fix the sealing ring on the pump body through the installation method of the groove wedge. However, when the size of the water pump is large or the hardness of the material is large, the processing amount is large and the processing time is long when processing a groove on the pump body and a boss on the sealing ring. SUMMARY

[0004] (I) Technical problem to be solved

[0005] The technical problem to be solved by the utility model is to provide a sealing ring structure for double-suction pump with reduced processing amount and simple installation in view of the current status of the prior art.

[0006] (II) Technical scheme

[0007] The utility model discloses a sealing ring structure for double-suction pump with key fixing, which comprises a pump body, two impellers are installed in the pump body, a sealing ring is installed on the sealing part of the impeller on the pump body, a connecting groove one is arranged on the outer wall of the sealing ring, a connecting groove two with a screw hole is arranged on the pump body corresponding to the connecting groove one, a connecting key block is installed between the connecting groove two and the connecting groove one, a countersunk hole is formed in the connecting key block opposite to one end of the connecting groove two, and a hexagonal screw is installed in the countersunk hole.

[0008] Further, a ring edge is reserved on the inner side of the sealing ring, and the ring edge faces the pump body.

[0009] By adopting the above technical scheme, the ring edge can make the contact area between the sealing ring and the pump body larger and the sealing better.

[0010] Further, the connecting groove one is formed on the sealing ring, and the connecting groove one is arranged along the periphery of the sealing ring.

[0011] By adopting the above technical scheme, the connecting groove one is mainly used for reliable installation of one end of the connecting key block.

[0012] Further, the size of the connecting groove one matches the size of one end of the connecting key block, and the size of the connecting groove one matches the size of the connecting groove two.

[0013] By adopting the above technical scheme, the connecting groove two and the connecting groove one can reserve sufficient installation space for both ends of the connecting key block.

[0014] Further, the connecting key block is made of stainless steel, and the connecting key block is inserted into the connecting groove one and the connecting groove two.

[0015] By adopting the above technical scheme, the connecting key block is mainly used to realize reliable installation and fixation of the sealing ring on the pump body.

[0016] Further, the countersunk hole penetrates the connecting key block, and the size of the countersunk hole matches the size of the hexagonal screw.

[0017] By adopting the above technical scheme, the countersunk hole is mainly used to effectively accommodate the hexagonal screw, and ensures the overall aesthetics of the sealing ring after the connecting key block is fixed.

[0018] Further, the hexagonal screw penetrates the countersunk hole and is screwed with the connecting groove two.

[0019] By adopting the above technical scheme, after the hexagonal screw is screwed, the connecting key block can be reliably locked at the connecting groove two.

[0020] Further, the sealing ring has two, and the abutting ring edge on each sealing ring abuts the pump body.

[0021] By adopting the above technical scheme, the sealing ring is the main structure for realizing the sealing of the pump body and the impeller.

[0022] (Three) beneficial effects

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] In order to solve the current industry double suction pump seal ring installation mode is mostly in the pump body groove, seal ring processing installation boss, this seal ring is fixed on the pump body through the groove wedge installation mode; but, when the water pump size is larger or the material hardness is larger, the processing pump body groove and seal ring boss processing amount is very large, the time is long, the utility model discloses a connecting groove two is arranged in advance at the sealing position of the pump body and the impeller, and a connecting groove one with a screw hole is reserved on the seal ring, so that the connecting key block is inserted into the connecting groove one and the connecting groove two, and the hexagonal screw is locked to realize the quick installation of the seal ring between the pump body and the impeller, so as to ensure the quick sealing between the pump body and the impeller. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the structure diagram of the double suction pump seal ring structure fixed by the key of the utility model;

[0026] Figure 2 is the structure diagram of the seal ring in the double suction pump seal ring structure fixed by the key of the utility model;

[0027] Figure 3 is the main sectional view of the seal ring in the double suction pump seal ring structure fixed by the key of the utility model;

[0028] Figure 4 is the structure diagram of the connecting key block in the double suction pump seal ring structure fixed by the key of the utility model;

[0029] Figure 5 is the structure diagram of the connecting key block in the double suction pump seal ring structure fixed by the key of the utility model; Figure 1 is the enlarged view of A in the double suction pump seal ring structure fixed by the key of the utility model.

[0030] The following is explained:

[0031] 1, impeller; 2, pump body; 3, hexagonal screw; 4, seal ring; 5, connecting key block; 6, connecting groove one; 7, abutting ring edge; 8, countersunk hole; 9, connecting groove two. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0033] AsFigures 1-5 As shown in the drawings, the sealing ring structure of the double-suction pump fixed by the key in the embodiment comprises a pump body 2, two impellers 1 are installed in the pump body 2, a sealing ring 4 is installed on the pump body 2 at the sealing position of the impeller 1, a connecting groove one 6 is arranged on the outer wall of the sealing ring 4, a connecting groove two 9 with screw holes is arranged on the pump body 2 corresponding to the connecting groove one 6, a connecting key block 5 is installed between the connecting groove two 9 and the connecting groove one 6, a countersunk hole 8 is arranged at one end of the connecting key block 5 opposite to the connecting groove two 9, a hexagonal screw 3 is installed in the countersunk hole 8, and the connecting groove two 9 and the connecting groove one 6 can reserve enough installation space for both ends of the connecting key block 5. The countersunk hole 8 is mainly used for effectively accommodating the hexagonal screw 3, and ensures the overall aesthetics of the sealing ring 4 after the connecting key block 5 is fixed. After the hexagonal screw 3 is tightened, the connecting key block 5 can be reliably locked at the connecting groove two 9.

[0034] As shown in the drawings, Figures 1-5 In the embodiment, a fitting ring edge 7 is also reserved inside the sealing ring 4, the fitting ring edge 7 faces the pump body 2, the fitting ring edge 7 can make the contact area between the sealing ring 4 and the pump body 2 larger, and the sealing performance is better. The connecting groove one 6 is formed on the sealing ring 4 and is arranged along the periphery of the sealing ring 4. The connecting groove one 6 is mainly used for reliably installing one end of the connecting key block 5. The size of the connecting groove one 6 matches the size of one end of the connecting key block 5, and the size of the connecting groove one 6 matches the size of the connecting groove two 9.

[0035] As shown in the drawings, Figures 1-5 In the embodiment, the connecting key block 5 is made of stainless steel, the connecting key block 5 is inserted into the connecting groove one 6 and the connecting groove two 9, and the connecting key block 5 is mainly used for reliably installing and fixing the sealing ring 4 on the pump body 2. The countersunk hole 8 penetrates the connecting key block 5, and the size of the countersunk hole 8 matches the size of the hexagonal screw 3. The hexagonal screw 3 penetrates the countersunk hole 8 and is screwed with the connecting groove two 9. The sealing ring 4 has two, and the fitting ring edge 7 on each sealing ring 4 fits the pump body 2. The sealing ring 4 is the main structure for realizing the sealing between the pump body 2 and the impeller 1.

[0036] The specific implementation process of the embodiment is as follows: when sealing between the pump body 2 and the impeller 1, the sealing ring 4 is first installed at the corresponding sealing position, one end of the connecting key block 5 is inserted into the connecting groove one 6, the other end of the connecting key block 5 is inserted into the connecting groove two 9, and then only the hexagonal screw 3 needs to be screwed and locked into the connecting groove two 9 through the connecting key block 5, so that the sealing ring 4 can be quickly installed between the pump body 2 and the impeller 1. Since only the connecting groove one 6 and the connecting groove two 9 need to be correspondingly arranged in this sealing mode, the installation of the sealing ring 4 between the pump body 2 and the impeller 1 can be realized, avoiding the cumbersome operation of opening a ring groove on the pump body 2 and reserving a ring table on the sealing ring 4, so that the sealing between the pump body 2 and the impeller 1 is more efficient.

[0037] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sealing ring structure for a double-suction pump fixed with a key, characterized in that: The pump includes a pump body (2), which has two impellers (1) installed inside. A sealing ring (4) is installed on the pump body (2) at the sealing part with the impellers (1). A connecting groove (6) is provided on the outer wall of the sealing ring (4). A connecting groove (9) with a screw hole is provided on the pump body (2) corresponding to the connecting groove (6). A connecting key block (5) is installed between the connecting groove (9) and the connecting groove (6). A countersunk hole (8) is opened on one end of the connecting key block (5) facing the connecting groove (9). A hexagonal screw (3) is installed in the countersunk hole (8).

2. The sealing ring structure for a double-suction pump fixed with a key according to claim 1, characterized in that: The inner side of the sealing ring (4) is also reserved with a fitting ring edge (7), which faces the pump body (2).

3. The sealing ring structure for a double-suction pump fixed with a key according to claim 1, characterized in that: The connecting groove (6) is formed on the sealing ring (4), and the connecting groove (6) is opened along the periphery of the sealing ring (4).

4. The sealing ring structure for a double-suction pump fixed with a key according to claim 3, characterized in that: The dimensions of the first connecting groove (6) match the dimensions of one end of the connecting key block (5), and the dimensions of the first connecting groove (6) match the dimensions of the second connecting groove (9).

5. A sealing ring structure for a double-suction pump fixed with a key according to claim 1, characterized in that: The connecting key block (5) is made of stainless steel, and the connecting key block (5) is inserted into both the first connecting groove (6) and the second connecting groove (9).

6. A sealing ring structure for a double-suction pump fixed with a key according to claim 5, characterized in that: The countersunk hole (8) passes through the connecting key block (5), and the size of the countersunk hole (8) matches the size of the hexagonal screw (3).

7. A sealing ring structure for a double-suction pump fixed with a key according to claim 1, characterized in that: The hexagonal screw (3) passes through the countersunk hole (8) and is screwed into the connecting groove (9).

8. A sealing ring structure for a double-suction pump fixed with a key according to claim 2, characterized in that: There are two sealing rings (4), and the fitting ring edge (7) on each sealing ring (4) is fitted to the pump body (2).

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