High-pressure small-flow centrifugal pump impeller

Abstract

The utility model relates to the technical field of centrifugal pumps, and discloses a high-pressure small-flow centrifugal pump impeller, which solves the problem that the integral impeller needs to be replaced when a single blade is damaged at present, and comprises a wheel disc, a plurality of blades are uniformly arranged at the top of the wheel disc, a mounting mechanism is arranged between the blades and the wheel disc, and a shaft hole is formed in the middle of the wheel disc. The mounting mechanism comprises bottom blocks fixed to the bottoms of the blades, a plurality of sliding grooves are evenly formed in the top of the wheel disc, the bottom blocks are inserted into the sliding grooves, and a fixing ring is fixedly mounted in the middle of the top of the wheel disc. According to the utility model, through the cooperation of the positioning block and the positioning groove and the cooperation of the sliding groove and the bottom block, the blade can be conveniently placed on the top of the wheel disc, through the cooperation of the inner block, the inner rod and the spring, the abutting column can be conveniently abutted against the bottom block to fix the blade, and when the abutting column is separated from the bottom block, the fixation of the blade and the wheel disc can be released; therefore, the single blade can be conveniently and independently detached and replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifugal pumps, in particular to an impeller of a high-pressure and small-flow centrifugal pump. Background Art

[0002] A centrifugal pump works by using the rotation of the impeller to cause water to move centrifugally. Before starting the pump, the pump casing and the suction pipe must be filled with water, and then the motor is started so that the pump shaft drives the impeller and water to rotate at high speed. The water moves centrifugally and is thrown to the outer edge of the impeller, flowing into the water pressure pipeline of the pump through the flow channel of the volute pump casing. The design of the impeller of a high-pressure, low-flow centrifugal pump usually takes into account the characteristics of high pressure and low flow, ensuring stable operation under high-pressure environment while meeting the needs of small flow.

[0003] The blades and impeller body on the existing centrifugal pump impeller are usually integrated. After long-term use, the blades on the impeller surface are easily damaged due to friction, which will affect the subsequent operation of the impeller. However, in the existing technology, if a single blade is damaged, the entire impeller needs to be replaced, which requires a lot of production costs and causes a waste of resources. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high-pressure, small-flow centrifugal pump impeller, which effectively solves the current problem that the entire impeller needs to be replaced when a single blade is damaged.

[0005] To achieve the above object, the utility model provides the following technical solution: a high-pressure, low-flow centrifugal pump impeller, comprising a wheel disc, a plurality of blades are evenly arranged on the top of the wheel disc, a mounting mechanism is arranged between the blades and the wheel disc, and an axial hole is arranged in the middle of the wheel disc;

[0006] The mounting mechanism comprises a bottom block fixed to the bottom of the blade, a plurality of slide grooves are evenly arranged on the top of the wheel disc, the bottom block is inserted into the slide grooves, a fixing ring is fixedly installed in the middle of the top of the wheel disc, a plurality of positioning grooves are evenly arranged on the outside of the fixing ring, a positioning block is fixedly connected to the blade, and the positioning block is inserted into the positioning groove.

[0007] Preferably, an inner rod is fixedly installed in the slide groove, and the bottom block is sleeved on the outer side of the inner rod.

[0008] Preferably, the outer side of the inner rod is movably sleeved with an inner block, a spring is fixedly connected between the side of the inner block away from the bottom block and the inner wall of the slide groove, the spring is sleeved on the outer side of the inner rod, the side of the inner block away from the spring is fixedly connected with an abutment column, and one end of the abutment column away from the inner block abuts against the bottom block.

[0009] Preferably, a top ring is provided on the top of the fixing ring, two bolts are symmetrically installed between the top ring and the fixing ring, and a plurality of plug rods are evenly and fixedly connected to the bottom of the top ring.

[0010] Preferably, a socket is provided on the top of the positioning block, and the insertion rod is inserted into the socket.

[0011] Preferably, two positioning posts are symmetrically fixedly connected to the top of the fixing ring, and the top ring is movably sleeved on the outside of the two positioning posts.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The utility model facilitates the placement of the blade on the top of the wheel disc through the cooperation between the positioning block and the positioning groove and between the slide groove and the bottom block, and facilitates the abutment column to abut on the bottom block to fix the blade through the cooperation between the inner block, the inner rod and the spring. When the abutment column is separated from the bottom block, the fixation of the blade and the wheel disc can be released, thereby facilitating the removal and replacement of a single blade;

[0014] (2) The new type facilitates the fixing of the top ring to the top of the fixing ring through the cooperation between the top ring and the bolts and between the fixing ring and the positioning column, and then enables the insertion rod to be inserted into the insertion hole on the positioning block, thereby ensuring the firmness of the blade installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1 This is a schematic diagram of the impeller structure of the utility model high-pressure small-flow centrifugal pump;

[0018] Figure 2 This is a schematic diagram of the structure of the roulette wheel of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation mechanism structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the bottom block structure of the utility model;

[0021] Figure 5 This is a schematic diagram of the positioning block structure of the utility model;

[0022] Figure 6 This is a schematic diagram of the disassembled structure of the positioning block and the top ring of the utility model.

[0023] In the figure: 1. wheel disc; 2. mounting mechanism; 201. bottom block; 202. fixing ring; 203. positioning block; 204. inner rod; 205. spring; 206. inner block; 207. abutment column; 208. positioning groove; 209. top ring; 2010. bolt; 2011. positioning column; 2012. insertion rod; 3. blade; 4. slide groove; 5. shaft hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] Embodiment 1, by Figure 1-2 The utility model includes a wheel disc 1, a plurality of blades 3 are evenly arranged on the top of the wheel disc 1, the wheel disc 1 and the blades 3 are both made of metal material, a mounting mechanism 2 is arranged between the blades 3 and the wheel disc 1, and an axial hole 5 is arranged in the middle of the wheel disc 1.

[0026] Specifically, by Figure 2-4 It is given that the mounting mechanism 2 includes a bottom block 201 fixed to the bottom of the blade 3, a plurality of slide grooves 4 are evenly arranged on the top of the wheel disc 1, the bottom block 201 is inserted into the slide groove 4, a fixing ring 202 is fixedly installed in the middle of the top of the wheel disc 1, a plurality of positioning grooves 208 are evenly arranged on the outer side of the fixing ring 202, a positioning block 203 is fixedly connected to the blade 3, the positioning block 203 is inserted into the positioning groove 208, an inner rod 204 is fixedly installed in the slide groove 4, the bottom block 201 is sleeved on the outer side of the inner rod 204, an inner block 206 is movably sleeved on the outer side of the inner rod 204, a spring 205 is fixedly connected between the side of the inner block 206 away from the bottom block 201 and the inner wall of the slide groove 4, the spring 205 is sleeved on the outer side of the inner rod 204, abutting column 207 is fixedly connected on the side of the inner block 206 away from the spring 205, and one end of the abutting column 207 away from the inner block 206 abuts against the bottom block 201;

[0027] When in use, first slide the inner block 206 along the inner rod 204, drive the abutment column 207 to move, compress the spring 205, and then place the blade 3 on the top of the wheel disc 1, so that the bottom block 201 is inserted into the inside of the slide groove 4 and is sleeved on the outside of the inner rod 204, and then move the blade 3, drive the bottom block 201 to slide on the inner rod 204, until the positioning block 203 is inserted into the positioning groove 208, and then release the control of the inner block 206. At this time, the spring 205 resets and drives the inner block 206 to slide along the inner rod 204 and approach the bottom block 201, until the abutment column 207 abuts on the bottom block 201, fixes the blade 3 on the top of the wheel disc 1, and when the abutment column 207 is disengaged from the bottom block 201, the fixation of the blade 3 and the wheel disc 1 is released, and finally the single blade 3 is disassembled and replaced.

[0028] Specifically, by Figure 5-6 It is shown that a top ring 209 is provided on the top of the fixing ring 202, two bolts 2010 are symmetrically installed between the top ring 209 and the fixing ring 202, a plurality of plug rods 2012 are evenly and fixedly connected to the bottom of the top ring 209, a plug hole is provided on the top of the positioning block 203, the plug rods 2012 are inserted into the plug hole, two positioning columns 2011 are symmetrically and fixedly connected to the top of the fixing ring 202, and the top ring 209 is movably sleeved on the outside of the two positioning columns 2011;

[0029] When in use, when the positioning block 203 is inserted into the positioning groove 208, first, the top ring 209 is put on the outside of the two positioning columns 2011 until the top ring 209 is located at the top of the fixing ring 202, and at the same time, the insertion rod 2012 is inserted into the socket on the positioning block 203, and then the top ring 209 is fixed to the fixing ring 202 by two bolts 2010, and the positioning block 203 is fixed to the fixing ring 202, and finally the blade 3 is firmly installed.

Claims

1. A high-pressure, low-flow centrifugal pump impeller, comprising a wheel disc (1), characterized in that: A plurality of blades (3) are evenly arranged on the top of the wheel disc (1), a mounting mechanism (2) is arranged between the blades (3) and the wheel disc (1), and an axial hole (5) is arranged in the middle of the wheel disc (1); The mounting mechanism (2) comprises a bottom block (201) fixed to the bottom of the blade (3); a plurality of sliding grooves (4) are evenly arranged on the top of the wheel disc (1); the bottom block (201) is inserted into the sliding grooves (4); a fixing ring (202) is fixedly installed in the middle of the top of the wheel disc (1); a plurality of positioning grooves (208) are evenly arranged on the outer side of the fixing ring (202); a positioning block (203) is fixedly connected to the blade (3); the positioning block (203) is inserted into the positioning groove (208); a top ring (209) is provided on the top of the fixing ring (202); two bolts (2010) are symmetrically arranged between the top ring (209) and the fixing ring (202); a plurality of insertion rods (2012) are evenly fixedly connected to the bottom of the top ring (209); a plug hole is provided on the top of the positioning block (203); the plug rods (2012) are inserted into the plug hole.

2. The high-pressure, low-flow centrifugal pump impeller according to claim 1, characterized in that: An inner rod (204) is fixedly installed in the slide groove (4), and the bottom block (201) is sleeved on the outer side of the inner rod (204).

3. The high-pressure, low-flow centrifugal pump impeller according to claim 2, characterized in that: The outer side of the inner rod (204) is movably sleeved with an inner block (206); a spring (205) is fixedly connected between the side of the inner block (206) away from the bottom block (201) and the inner wall of the slide groove (4); the spring (205) is sleeved on the outer side of the inner rod (204); a side of the inner block (206) away from the spring (205) is fixedly connected with an abutment column (207); one end of the abutment column (207) away from the inner block (206) abuts against the bottom block (201).

4. The high-pressure, low-flow centrifugal pump impeller according to claim 1, characterized in that: The top of the fixing ring (202) is symmetrically fixedly connected to two positioning posts (2011), and the top ring (209) is movably sleeved on the outside of the two positioning posts (2011).

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