Impeller mechanism for liquid ring vacuum pump

Abstract

The utility model discloses an impeller mechanism for a liquid ring vacuum pump, which belongs to the technical field of liquid ring vacuum pumps and comprises a rotating shaft, a fixing ring is sleeved on the surface of the rotating shaft, a fixing component is arranged in the fixing ring, an impeller body is arranged on the side surface of the fixing ring, and a replacement component is connected to the surface of the impeller body. According to the utility model, the fixed assembly and the rotary control block are arranged to drive the screw rod to rotate, under the meshing connection between the screw rod and the fixed blocks, the two fixed blocks can respectively move towards the outer side, the fixed blocks are clamped with the L-shaped fixed grooves to finish the connection and assembly between the rotating shaft and the impeller body, and the impeller body is firmly installed and positioned, so that the use effect is better; by arranging the replacement assembly, the impeller blades are installed in the installation grooves of the installation sleeve through the installation blocks, the impeller blades are firmly installed in the mode that the bolts are locked into the locking grooves, and the impeller blades which are deformed and damaged are convenient to replace, so that the maintenance and replacement cost is well reduced.

Description

Technical Field

[0001] This utility model belongs to the field of liquid ring vacuum pump technology, and specifically relates to an impeller mechanism for a liquid ring vacuum pump. Background Technology

[0002] This high-efficiency liquid ring vacuum pump with ultra-large pumping capacity is a type of vane fluid machinery. It is suitable for vacuum concentration, vacuum dehydration, vacuum drying, vacuum extraction of methane gas, vacuum oxygen production, vacuum conveying and other processes in industries such as chemical, coal mining, metallurgy, papermaking, and light industry.

[0003] Chinese Patent Application No. 202021706769.2 discloses an impeller for a high-efficiency liquid ring vacuum pump with ultra-large pumping capacity. The impeller includes a shaft and an impeller body sleeved on the shaft. A fixing ring is fixedly sleeved on the shaft. Multiple evenly distributed U-shaped rods are fixedly connected to the outer side wall of the fixing ring. Multiple L-shaped rods corresponding to the U-shaped rods are fixedly connected along the edge of the impeller body near the fixing ring. Semi-cylindrical arc-shaped mating blocks are fixedly connected to the ends of both the L-shaped and U-shaped rods, and the two arc-shaped mating blocks are fitted together. External threads are provided on the outer sides of both arc-shaped mating blocks. A connecting cylinder is sleeved on both the L-shaped and U-shaped rods, and the inner wall of the connecting cylinder is provided with internal threads. This invention makes the impeller for the high-efficiency liquid ring vacuum pump with ultra-large pumping capacity easy to disassemble and assemble as needed, and it will not loosen after installation, effectively ensuring the stability of the installation.

[0004] In the aforementioned patent, the impeller body is installed and fixed by magnetic attraction between the positioning rod and the connecting cylinder. The connection structure is not stable and secure enough, and the impeller is prone to falling off. The blades on the surface of the impeller body cannot be disassembled. When a blade is deformed, the entire impeller needs to be replaced, and the cost of the device is relatively high. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides an impeller mechanism for a liquid ring vacuum pump, which features stable structure and good performance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an impeller mechanism for a liquid ring vacuum pump, comprising a rotating shaft, a fixed ring and an impeller body coaxially disposed on the rotating shaft, the impeller body being located on one side of the fixed ring, a fixing component for fastening the impeller body being disposed on the fixed ring, and a replacement component being connected to the impeller body, wherein impeller blades are detachably connected inside the replacement component.

[0007] Preferably, the fixing component includes an auxiliary component, a fixing block, a fixing groove, a through hole, and a screw. The fixing ring has two through holes symmetrically opened along its axis, and the fixing block is slidably connected inside the through holes. The fixing ring is rotatably connected to the screw along its radial direction. The screw is threadedly connected to the fixing block. An auxiliary component is provided at the screw. Two fixing grooves are opened on the side of the impeller body. Both the fixing block and the fixing grooves are L-shaped.

[0008] Preferably, the impeller body has an internal directional block, and the surface of the rotating shaft has a directional groove, with the positions of the directional block and the directional groove corresponding one-to-one.

[0009] Preferably, the auxiliary component includes a locking block and a gear, wherein the gear is sleeved on the surface of the screw, one end of the locking block has a toothed surface that extends into the fixing ring and meshes with the gear, the other end of the locking block is vertically connected to a baffle, a telescopic rod is fixedly connected between the baffle and the end face of the fixing ring, and a tension spring is sleeved on the telescopic rod.

[0010] Preferably, the replacement component includes a mounting sleeve connected to the surface of the impeller body. The mounting sleeve has a mounting groove for mounting impeller blades along its length. The bottom of the impeller blade and the mounting groove both have overlapping locking grooves, and bolts are threaded into the locking grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model sets up a fixing component so that two fixing blocks are respectively aligned and inserted into the fixing groove. The rotation control block drives the screw to rotate. Under the threaded connection between the screw and the fixing block, the two fixing blocks move in a direction away from the axis of the fixing ring until the L-shaped fixing block coincides and abuts against the inner side wall of the fixing groove, thus realizing the axial positioning of the impeller body.

[0013] 2. By setting up a replacement component, the impeller blades are installed in the mounting groove of the mounting sleeve by the mounting block. The impeller blades are firmly installed by locking bolts into the locking groove, which facilitates the replacement of deformed and damaged impeller blades and thus greatly reduces the maintenance and replacement costs. Attached Figure Description

[0014] Figure 1 This is the front view of the present invention;

[0015] Figure 2 This is a front view of the fixing component of this utility model;

[0016] Figure 3 This is a front view of the replacement component of this utility model.

[0017] In the diagram: 1. Impeller blade; 2. Shaft; 3. Impeller body; 4. Fixing ring; 5. Fixing assembly; 51. Auxiliary assembly; 511. Locking block; 512. Tension spring; 513. Gear; 52. Fixing block; 53. Fixing groove; 54. Orienting block; 55. Orienting groove; 56. Through hole; 57. Screw; 58. Control block; 6. Replacement assembly; 61. Mounting sleeve; 62. Bolt; 63. Locking groove; 64. Mounting block; 65. Mounting groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1

[0020] Please see Figure 1-3 The present invention provides the following technical solution: an impeller mechanism for a liquid ring vacuum pump, including a rotating shaft 2, a fixing ring 4 on the surface of the rotating shaft 2, a fixing component 5 inside the fixing ring 4, an impeller body 3 on the side of the fixing ring 4, a replacement component 6 connected to the surface of the impeller body 3, and an impeller blade 1 embedded inside the replacement component 6.

[0021] Specifically, the fixing component 5 includes an auxiliary component 51, a fixing block 52, a fixing groove 53, a through hole 56, and a screw 57. The fixing ring 4 has two through holes 56 symmetrically arranged along its axial direction. A fixing block 52 is slidably connected to each through hole 56, with the thickness of the fixing block being less than the height of the through hole. The screw passes radially through the fixing ring, the fixing block, and the rotating shaft. Control blocks 58 are fixedly connected to both ends of the screw 57 on the outer surface of the fixing ring, allowing the user to tighten the screw via the control blocks. The screw is rotatably connected to the fixing ring and the rotating shaft, and the screw is threaded to the two fixing blocks in opposite directions. Thus, rotating the screw allows the upper and lower fixing blocks to move in opposite directions. Two fixing grooves 53, corresponding one-to-one with the fixing blocks, are provided on the end face of the impeller body 3 near the fixing ring 4. Both the fixing block 52 and the fixing groove 53 have an L-shaped structure.

[0022] Furthermore, multiple directional blocks 54 are arranged circumferentially on the inner wall of the impeller body 3, and directional grooves 55 are formed on the surface of the rotating shaft 2 to accommodate the directional blocks 54. The positions of the directional blocks 54 and the directional grooves 55 correspond one-to-one. In this way, the circumferential positioning of the impeller body 3 is achieved through the limiting connection between the directional blocks 54 and the directional grooves 55, avoiding slippage between the impeller body 3 and the rotating shaft 2 during transmission, thus improving the transmission effect.

[0023] In addition, an auxiliary component 51 is provided at the screw 57. The auxiliary component 51 includes a locking block 511, a tension spring 512, and a gear 513. The gear 513 is fixedly sleeved on the surface of the screw 57. One end of the locking block has a toothed surface that meshes with the gear 513. The toothed end of the locking block passes through the fixing ring axially and meshes with the gear 513. The other end of the locking block 511 is vertically fixedly connected to a baffle, which is located on the right end face of the fixing ring. A telescopic rod is fixedly connected between the baffle of the locking block and the right end face of the fixing ring. The telescopic rod is sleeved with a tension spring 512. Under the tension of the tension spring, the toothed surface of the locking block is always locked on the gear to prevent the fixing block 52 from disengaging from the impeller body 3 due to accidental rotation of the screw.

[0024] In this embodiment, the impeller body 3 is fitted onto the rotating shaft 2. The engagement of the directional block 54 and the directional groove 55 achieves circumferential positioning of the impeller body 3. The impeller body 3 is pushed until the two fixing blocks 52 are inserted into the fixing grooves 53 respectively. Tightening the control block 58 drives the screw 57 to rotate. Since the screw 57 is threadedly connected to the fixing block 52, and the through hole 56 limits the fixing block 52 to prevent it from rotating, the fixing block moves linearly along the screw axis. Because the thread directions at the connection between the screw 57 and the two fixing blocks are opposite, when the screw 57 is tightened, the two fixing blocks 52 move away from the axis of the fixing ring. Taking the upper fixing block as an example, the upper fixing block moves upward until the vertical plate at its left end coincides with and abuts against the inner wall of the fixing groove 53, thus achieving axial positioning of the impeller body 3. Finally, under the tension of the tension spring, the tooth surface of the locking block 511 is always locked on the gear to prevent the screw from rotating unexpectedly due to external factors such as vibration during the operation of the vacuum pump, thereby avoiding the problem of the impeller body 3 detaching from the fixing block 52.

[0025] Example 2

[0026] The difference between this embodiment and Embodiment 1 is that the replacement component 6 includes a mounting sleeve 61 and a mounting block 64. The mounting sleeve 61 is fixedly connected to the surface of the impeller body 3. A T-shaped mounting groove 65 is opened inside the mounting sleeve 61. The bottom of the impeller blade 1 is integrally formed with the mounting block 64. Locking grooves 63 are opened on both sides of the mounting block 64, corresponding to the bottom of the mounting groove 65. Bolts 62 are threadedly connected to the locking grooves 63. During installation, the impeller blade 1 and the mounting block 64 are pushed into the mounting groove 65 along one end until the locking grooves 63 of the two are aligned. The bolts are then tightened in the locking grooves to stably install the impeller blade 1 on the mounting sleeve 61. With the above settings, when a certain impeller blade 1 is damaged, it can be replaced accordingly, thereby greatly reducing the maintenance and replacement cost and enabling quick disassembly and assembly.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An impeller mechanism for a liquid ring vacuum pump, comprising a rotating shaft (2), characterized in that: A fixing ring (4) and an impeller body (3) are coaxially arranged on the rotating shaft (2). The impeller body (3) is located on one side of the fixing ring (4). The fixing ring (4) is provided with a fixing component (5) for fastening the impeller body (3). The fixing component (5) includes a fixing block (52) and a screw (57). The fixing ring (4) has two through holes (56) symmetrically opened along its axis. The fixing block (52) is slidably connected inside the through holes (56). The fixing ring (4) is rotatably connected to the screw (57) along its radial direction. The screw (57) is threadedly connected to the fixing block (52). Two fixing blocks (52) are opened on the side of the impeller body (3) for engaging the fixing block. The fixing slot (53) of 52) and the fixing block (52) and the fixing slot (53) are both L-shaped. The impeller body (3) is connected to the replacement component (6). The impeller blade (1) is detachably connected inside the replacement component (6). The replacement component (6) includes an installation sleeve (61). The installation sleeve (61) is connected to the surface of the impeller body (3). The installation sleeve (61) has an installation slot (65) for installing the impeller blade (1) along its length direction inside. The bottom of the impeller blade (1) and the installation slot (65) are both provided with overlapping locking slots (63). The locking slot (63) is threaded with a bolt (62).

2. The impeller mechanism for a liquid ring vacuum pump according to claim 1, characterized in that: The impeller body (3) is provided with an orientation block (54) inside, and the surface of the rotating shaft (2) is provided with an orientation groove (55). The positions of the orientation block (54) and the orientation groove (55) correspond one-to-one.

3. The impeller mechanism for a liquid ring vacuum pump according to claim 2, characterized in that: The fixing component (5) also includes an auxiliary component (51), which includes a locking block (511) and a gear (513). The gear (513) is sleeved on the surface of the screw (57). One end of the locking block (511) has a toothed surface and extends into the fixing ring (4) to mesh with the gear (513). The other end of the locking block (511) is vertically connected to a baffle. A telescopic rod is fixedly connected between the baffle and the end face of the fixing ring (4). A tension spring (512) is sleeved on the telescopic rod.

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