Impeller locking structure for pump

Abstract

The utility model discloses a locking structure of an impeller for a pump, which relates to the technical field of impellers for pumps and comprises an impeller gear shaft and an upper locking piece, the front vertical surface of the impeller gear shaft is connected with a limiting piece, the upper locking piece is meshed with the upper end of the impeller gear shaft, and the lower end of the impeller gear shaft is meshed with a lower locking piece. And central bolts vertically penetrate through the centers of the lower locking piece, the upper locking piece and the lower locking piece. According to the impeller locking structure for the pump, tooth-shaped structures are arranged on the upper surface and the lower surface, the upper side and the lower side of the impeller gear shaft cooperate through the upper locking piece and the lower locking piece, and therefore the stability of connection between the impeller gear shaft and the main shaft can be effectively guaranteed; the connecting sealing performance of the device can be guaranteed to the maximum degree, finally, the impeller gear shaft, the upper locking piece and the lower locking piece can be further structurally fixed through the central bolt, and the limiting piece can prevent the structures in the horizontal direction from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of pump impellers, in particular to a pump impeller locking structure. Background Art

[0002] The impeller is the core component of the pump. It rotates with the shaft to transport the medium. During the working process, it will be subjected to the impact force from the medium and the axial force caused by the fluid pressure difference. At the same time, when the pump is stopped, the impeller will reverse for a short time due to the water hammer. In order to ensure the normal operation of the impeller, an impeller locking device must be designed on the impeller shaft head to prevent the impeller from loosening.

[0003] At present, there is no special equipment for locking the threaded impeller of the pump. Since the pump shaft cannot be fixed when tightening, there is actually some gap that can move when tightening the impeller. When the pump is subjected to force during operation, the impeller will become loose, damaged or even fall off.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a pump impeller locking structure is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a pump impeller locking structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pump impeller locking structure, comprising an impeller gear shaft and an upper locking piece, a limiting piece is arranged on the front side elevation of the impeller gear shaft, the upper locking piece is meshingly connected to the upper end of the impeller gear shaft, and the lower end of the impeller gear shaft is meshingly connected to the lower locking piece, and a central bolt is vertically installed through the center of the lower locking piece, the upper locking piece and the lower locking piece, and the connection between the lower locking piece and the upper locking piece and the lower locking piece is filled with sealant, the upper locking piece comprises an upper tooth block, a connecting mortise and a fastening bolt, the left and right sides of the upper tooth block are fixedly connected with the connecting mortise, and the middle section of the connecting mortise is vertically installed with a fastening bolt.

[0007] Furthermore, the limiting member includes a top block, a fixed plate and a fixing bolt. The top block is fixedly connected to the surrounding of the fixing plate, and the surface of the fixing plate is equidistantly installed with fixing bolts around the top block as the center, and the fixing bolts and the impeller gear shaft are threadedly connected.

[0008] Furthermore, the lower locking member includes a lower tooth block, a support block and a connecting tenon, the left and right sides of the lower tooth block are fixedly connected to the support blocks, and the top of the support block is fixedly installed with the connecting tenon.

[0009] Furthermore, the central bolts are threadedly connected to the upper locking member and the lower locking member, and the limiting members are threadedly connected to the upper locking member and the lower locking member, respectively, and the outer surface structure of the connecting tenon matches the inner surface structure of the connecting mortise.

[0010] The utility model provides a pump impeller locking structure, which has the following beneficial effects:

[0011] 1. The utility model uses the mutually meshing connection structure between the lower tooth block 401 and the upper tooth block 301 and the impeller gear shaft 1 itself, and at the same time cooperates with the structural docking of the connecting mortise 302 and the connecting tenon 403 on the left and right sides, and finally uses the fixing bolt 203 to vertically screw therein, so that the impeller gear shaft 1 is clamped therein through the entire upper locking member 3 and the lower locking member 4, and utilizes its meshing connection structure to prevent the problem of its structure loosening during high-speed rotation, and cooperates with the central bolt 5 that runs through the upper locking member 3, the impeller gear shaft 1 and the lower locking member 4, which can further play a role in structural stability.

[0012] 2. The utility model provides a limit member 2 on the positive side elevation of the impeller gear shaft 1, and uses the limit member 2 to connect and fix with the upper locking member 3 and the lower locking member 4 respectively, so as to provide structural limitation for the impeller gear shaft 1 at the output end of the main transmission shaft, avoid the problem of structural separation in the horizontal direction, and thus improve the locking effect of the device structure. In addition, the joints between the upper locking member 3, the lower locking member 4 and the impeller gear shaft 1 are filled with sealant 6, which not only improves the sealing between the structures, but also ensures the stability of the connection of the device structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view structural schematic diagram of a pump impeller locking structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the front cross-sectional structure of a main body of a pump impeller locking structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of an upper locking member and a lower locking member of a pump impeller locking structure of the utility model;

[0016] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of the upper gear block of the impeller locking structure for a pump.

[0017] In the figure: 1. impeller gear shaft; 2. limit piece; 201. top block; 202. fixing plate; 203. fixing bolt; 3. upper locking piece; 301. upper tooth block; 302. connecting mortise; 303. fastening bolt; 4. lower locking piece; 401. lower tooth block; 402. support block; 403. connecting tenon; 5. central bolt; 6. sealant. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0019] like Figures 1 to 4 As shown, a pump impeller locking structure comprises an impeller gear shaft 1 and an upper locking member 3, a limiting member 2 is arranged on the front side elevation of the impeller gear shaft 1, the upper locking member 3 is meshedly connected to the upper end of the impeller gear shaft 1, and the lower end of the impeller gear shaft 1 is meshedly connected to the lower locking member 4, and a central bolt 5 is vertically penetrated and installed in the center of the lower locking member 4, the upper locking member 3, and the lower locking member 4, and the connection between the lower locking member 4 and the upper locking member 3 and the lower locking member 4 is filled with a sealant 6, and the limiting member 2 comprises a top block 201, a fixing plate 202 and a fixing bolt 203. 03. A fixing plate 202 is fixedly connected around the top block 201, and fixing bolts 203 are installed on the surface of the fixing plate 202 at equal distances with the top block 201 as the center, and the fixing bolts 203 are threadedly connected to the impeller gear shaft 1. A limiting member 2 is provided on the positive side elevation of the impeller gear shaft 1, and the limiting member 2 is respectively connected and fixed to the upper locking member 3 and the lower locking member 4, so that a structural limit can be provided for the impeller gear shaft 1 at the output end of the main transmission shaft to avoid the problem of structural detachment in the horizontal direction.

[0020] The upper locking member 3 includes an upper tooth block 301, a connecting mortise 302 and a fastening bolt 303. The left and right sides of the upper tooth block 301 are fixedly connected with the connecting mortise 302, and the middle section of the connecting mortise 302 is vertically installed with the fastening bolt 303. The lower locking member 4 includes a lower tooth block 401, a support block 402 and a connecting tenon 403. The left and right sides of the lower tooth block 401 are fixedly connected with the support block 402, and the top of the support block 402 is fixedly installed with the connecting tenon 403. The central bolt 5 is threadedly connected to the upper locking member 3 and the lower locking member 4, and the limit member 2 is respectively connected to the upper locking member 3. It is threadedly connected to the lower locking piece 4, and the outer surface structure of the connecting tenon 403 matches the inner surface structure of the connecting mortise 302. The lower tooth block 401 and the upper tooth block 301 are respectively connected to the impeller gear shaft 1 through the mutual meshing connection structure, and the connecting mortise 302 and the connecting tenon 403 on the left and right sides are respectively matched to connect the structures. Finally, the fixing bolt 203 is used to vertically screw it into them, so that the impeller gear shaft 1 is clamped therein through the entire upper locking piece 3 and the lower locking piece 4, and the meshing connection structure is used to prevent the problem of its structure loosening during high-speed rotation.

[0021] In summary, if Figures 1 to 4As shown, the pump impeller locking structure, when in use, firstly insert the impeller gear shaft 1 between the upper locking piece 3 and the lower locking piece 4 in the horizontal direction, and respectively mesh the upper gear block 301 and the lower gear block 401 with the upper and lower surfaces of the impeller gear shaft 1, and then inject the sealant 6 into the joint between the impeller gear shaft 1, the upper locking piece 3 and the lower locking piece 4;

[0022] At the same time, the slidably connected connecting mortise 302 and connecting tenon 403 are screwed into the connecting mortise 302 and the connecting tenon 403 from top to bottom in the vertical direction, thereby fixing the upper locking member 3 and the lower locking member 4 on the left and right sides respectively;

[0023] Subsequently, the limit member 2 is structurally docked with the upper locking member 3 and the lower locking member 4, and the fixing bolts 203 arranged on the surface of the fixing plate 202 are screwed into the connecting holes pre-opened on the surfaces of the upper gear block 301 and the lower gear block 401 respectively. Finally, the central bolt 5 is vertically screwed into the upper locking member 3, the lower locking member 4 and the impeller gear shaft 1, so as to further fix the impeller gear shaft 1 to prevent the impeller gear shaft 1 from structurally falling off from the main drive shaft of the pump.

[0024] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A pump impeller locking structure, comprising an impeller gear shaft (1) and an upper locking member (3), characterized in that: A limiting member (2) is provided on the front side elevation of the impeller gear shaft (1); the upper locking member (3) is meshedly connected to the upper end of the impeller gear shaft (1); and the lower end of the impeller gear shaft (1) is meshedly connected to the lower locking member (4); and a central bolt (5) is vertically installed through the center of the lower locking member (4), the upper locking member (3), and the lower locking member (4); and a sealant (6) is filled at the connection between the lower locking member (4), the upper locking member (3), and the lower locking member (4); the upper locking member (3) comprises an upper tooth block (301), a connection mortise (302), and a fastening bolt (303); the left and right sides of the upper tooth block (301) are fixedly connected to the connection mortise (302), and the middle section of the connection mortise (302) is vertically installed with the fastening bolt (303).

2. A pump impeller locking structure according to claim 1, characterized in that: The limiting member (2) comprises a top block (201), a fixing disk (202) and fixing bolts (203); the fixing disk (202) is fixedly connected around the top block (201); the fixing bolts (203) are equidistantly arranged on the surface of the fixing disk (202) with the top block (201) as the center; and the fixing bolts (203) are threadedly connected to the impeller gear shaft (1).

3. A pump impeller locking structure according to claim 1, characterized in that: The lower locking member (4) comprises a lower tooth block (401), a support block (402) and a connecting tenon (403); the left and right sides of the lower tooth block (401) are fixedly connected to the support block (402), and the top of the support block (402) is fixedly installed with the connecting tenon (403).

4. A pump impeller locking structure according to claim 3, characterized in that: The central bolt (5) is threadedly connected to the upper locking member (3) and the lower locking member (4), and the limiting member (2) is threadedly connected to the upper locking member (3) and the lower locking member (4), respectively, and the outer surface structure of the connecting tenon (403) matches the inner surface structure of the connecting mortise (302).

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