Water machine motor with combined waterproof structure

Abstract

The utility model relates to the field of waterproof structures, in particular to a water machine motor with a combined waterproof structure. Comprising a hollow machine shell, and a main shaft is arranged in the machine shell; a waterproof cover and a machine shell end cover are coaxially arranged at one end of the machine shell, and the main shaft penetrates through the waterproof cover and the machine shell end cover and then is connected with the movable impeller. A first sealing mechanism is formed between the waterproof cover and the casing end cover, and a second sealing mechanism is formed between the casing end cover and the main shaft. The first sealing mechanism and the second sealing mechanism are arranged, two different sealing modes are adopted, and compared with a single floating type waterproof structure in the prior art, the waterproof cover is in interference fit with the main shaft, so that the position of the waterproof cover does not move in the glue curing process when the waterproof cover is installed. And compared with a single labyrinth ring waterproof structure, grease can be filled, so that water vapor is isolated.

Description

Technical Field

[0001] The utility model relates to the field of waterproof structures, in particular to a water motor with a combined waterproof structure. Background Art

[0002] Water motor is a new type of hydraulic motor that uses filtered tap water or seawater instead of mineral oil as the working medium. It has many advantages such as energy saving, good flame retardancy, good safety, low maintenance cost and low pollution. It has a wide range of application needs in the mining, food and chemical industries.

[0003] Most commercially available waterproofing solutions for hydraulic motors use either a floating waterproof cover or a labyrinth ring. Floating waterproofing systems suffer from various issues during installation, as the glue curing process can be affected. This can cause the cover to shift during the curing process, leading to contact friction between the cover and the shaft. Labyrinth ring waterproofing systems, on the other hand, suffer from a large gap between the cover and the housing, making it difficult to fill with grease, thus failing to effectively isolate vaporized water vapor. Utility Model Content

[0004] The utility model aims to provide a water motor with a combined waterproof structure to solve the problem of poor sealing effect of the sealing method of a single floating waterproof cover and a labyrinth ring in the prior art.

[0005] The technical solution of the utility model is: a water motor with a combined waterproof structure, comprising a hollow casing, wherein a main shaft is arranged in the casing;

[0006] A waterproof cover and a casing end cover are coaxially arranged at one end of the casing, and the main shaft passes through the waterproof cover and the casing end cover and is connected to the impeller;

[0007] A first sealing mechanism is formed between the waterproof cover and the housing end cover, and a second sealing mechanism is formed between the housing end cover and the main shaft.

[0008] Preferably, the first sealing mechanism is configured as a structural seal, and the second sealing mechanism is configured as a medium seal.

[0009] Preferably, the first sealing mechanism includes a ring platform arranged around its own axis at one end of the waterproof cover close to the housing end cover; the housing end cover is provided with a ring groove corresponding to the ring platform, and the ring platform cooperates with the ring groove to form a labyrinth structure.

[0010] Preferably, the annular platforms and the corresponding annular grooves are arranged in multiple groups, and the annular platforms and annular grooves in any group have different diameter sizes.

[0011] Preferably, the cross-sections of the annular platform and the annular groove through the axis are both configured as E-shaped structures, and the height direction of the annular platform and the depth direction of the annular groove are both parallel to the axis of the main shaft.

[0012] Preferably, the second sealing mechanism comprises a filling groove provided at one end of the housing end cover away from the waterproof cover, the filling groove cooperates with the side wall of the main shaft to form a cavity, and the cavity is filled with grease for sealing.

[0013] Preferably, the cross section of the filling groove passing through the axis is configured as a bowl-shaped structure, with the open end facing away from the waterproof cover.

[0014] Preferably, the main shaft coaxial sleeve is provided with a bearing, and a bearing chamber is provided at one end of the filling groove away from the waterproof cover, and the outer wall of the bearing abuts against the bearing chamber; the chamber is formed by the filling groove, the main shaft side wall and the end of the bearing.

[0015] Preferably, the waterproof cover and the housing end cover are respectively fitted with the main shaft in an interference fit and a clearance fit.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] This application utilizes two different sealing methods by providing a first sealing mechanism and a second sealing mechanism. Compared to the single floating waterproof structure in the prior art, the waterproof cover has an interference fit with the main shaft, which prevents the waterproof cover from shifting during the glue curing process during installation. Compared to a single labyrinth ring waterproof structure, the waterproof cover can also be filled with grease to isolate it from moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a cross-sectional view of a water motor with a combined waterproof structure according to the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a structural diagram of the waterproof cover of the utility model;

[0022] Figure 4 This is a structural diagram of the casing and casing end cover of the utility model;

[0023] Among them: 1. Casing, 2. Spindle, 3. Waterproof cover, 4. Casing end cover, 5. Ring groove, 6. Ring table, 7. Filling groove, 8. Bearing, 9. Bearing chamber. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0025] like Figures 1-4 As shown, a water motor with a combined waterproof structure includes a casing 1, which is hollow inside and is provided with a main shaft 2. One end of the main shaft 2 is connected to the motor rotor, and driven by the motor rotor, it drives the impeller outside the casing 1 to rotate. For waterproofing purposes, a waterproof cover 3 and a casing end cover 4 are coaxially provided at one end of the casing 1. The main shaft 2 passes through the waterproof cover 3 and the casing end cover 4 and is connected to the impeller. The main shaft 2 and the waterproof cover 3 have an interference fit, so that the position of the waterproof cover 3 does not move during the glue curing process during installation. The main shaft 2 and the casing end cover 4 have a clearance fit. A first sealing mechanism is formed between the waterproof cover 3 and the casing end cover 4, and a second sealing mechanism is formed between the casing end cover 4 and the main shaft 2.

[0026] Specifically, the first sealing mechanism is configured as a structural seal and includes an annular platform 6 and an annular groove 5 configured to cooperate with the annular platform 6. The annular platform 6 is disposed around the axis of the main shaft 2 at the end of the waterproof cover 3 near the housing end cover 4, and the annular groove 5 is disposed at the end of the housing end cover 4 near the waterproof cover 3, corresponding to the annular platform 6. The annular platform 6 and the annular groove 5 cooperate to form a labyrinthine structure, achieving a waterproof effect.

[0027] Furthermore, the lands 6 and grooves 5 are arranged in multiple groups, each with a different diameter. Furthermore, the cross-sections of the lands 6 and grooves 5 along the axis are each E-shaped, with the height of the lands 6 and the depth of the grooves 5 parallel to the axis of the spindle 2.

[0028] The second sealing mechanism is configured to utilize a dielectric seal and includes a filling groove 7 disposed at the end of the housing end cover 4, distal from the waterproof cover 3. The filling groove 7 has a bowl-shaped cross-section extending through the axis, with the open end of the bowl facing away from the waterproof cover 3. Furthermore, a bearing 8 is coaxially sleeved on the main shaft 2. A bearing chamber 9 is provided at the end of the filling groove 7, distal from the waterproof cover 3. The outer wall of the bearing 8 abuts against and is housed within the bearing chamber 9. The filling groove 7, the sidewall of the main shaft 2, and the end of the bearing 8 form a chamber, which is sealed by adding grease to the chamber.

[0029] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they are not intended to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A water motor with a combined waterproof structure, characterized in that: It comprises a hollow casing (1), wherein a main shaft (2) is arranged in the casing (1); A waterproof cover (3) and a casing end cover (4) are coaxially arranged at one end of the casing (1); the main shaft (2) passes through the waterproof cover (3) and the casing end cover (4) and is connected to the impeller; A first sealing mechanism is formed between the waterproof cover (3) and the housing end cover (4), and a second sealing mechanism is formed between the housing end cover (4) and the main shaft (2).

2. A water motor with a combined waterproof structure according to claim 1, characterized in that: The first sealing mechanism is configured as a structural seal, and the second sealing mechanism is configured as a medium seal.

3. The water motor with a combined waterproof structure according to claim 2, characterized in that: The first sealing mechanism comprises a ring platform (6) arranged around its own axis at one end of the waterproof cover (3) close to the housing end cover (4); the housing end cover (4) is provided with a ring groove (5) corresponding to the ring platform (6); the ring platform (6) cooperates with the ring groove (5) to form a labyrinth structure.

4. The water motor with a combined waterproof structure according to claim 3, characterized in that: The annular platforms (6) and the corresponding annular grooves (5) are arranged in multiple groups, and any group of the annular platforms (6) and annular grooves (5) have different diameter sizes.

5. The water motor with a combined waterproof structure according to claim 4, characterized in that: The cross-sections of the annular platform (6) and the annular groove (5) passing through the axis are both configured as E-shaped structures, and the height direction of the annular platform (6) and the depth direction of the annular groove (5) are both parallel to the axis of the main shaft (2).

6. The water motor with a combined waterproof structure according to claim 2, characterized in that: The second sealing mechanism comprises a filling groove (7) provided at one end of the housing end cover (4) away from the waterproof cover (3); the filling groove (7) cooperates with the side wall of the main shaft (2) to form a chamber; the chamber is filled with grease for sealing.

7. The water motor with a combined waterproof structure according to claim 6, characterized in that: The cross section of the filling groove (7) passing through the axis is configured as a bowl-shaped structure, with the open end facing in a direction away from the waterproof cover (3).

8. The water motor with a combined waterproof structure according to claim 7, characterized in that: The main shaft (2) is coaxially sleeved with a bearing (8); the end of the filling groove (7) away from the waterproof cover (3) is provided with a bearing chamber (9); the outer wall of the bearing (8) abuts against the bearing chamber (9); the chamber is formed by the filling groove (7), the side wall of the main shaft (2) and the end of the bearing (8).

9. A hydraulic motor with a combined waterproof structure according to claim 5 or 8, characterized in that: The waterproof cover (3) and the housing end cover (4) are respectively fitted with the main shaft (2) in an interference fit and a clearance fit.

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