Variable frequency pump with electromagnetic mute structure

Abstract

The utility model provides a variable frequency pump with an electromagnetic mute structure, which comprises a pump shell, two ends of the pump shell are respectively fixed and communicated with a water inlet pipe and a water outlet pipe, the pump shell is fixedly connected with a motor, an impeller is arranged in the pump shell, and the impeller is connected with a motor. The motor drives the impeller to rotate, water is sucked into the pump shell from the water inlet pipe and then guided out of the water outlet pipe, the pump cover is fixed to the pump shell, a variable frequency controller used for being electrically connected with the motor is fixedly connected to the side wall of the pump cover, and a sound insulation cover is connected to the interior of the pump cover through a connecting mechanism. A cavity is formed between the sound insulation cover and the pump cover, sound insulation cotton is fixed in the cavity, the sound insulation cover is arranged outside the motor in a covering mode, and the purpose of improving the mute effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a variable frequency pump especially, relate to a variable frequency pump with electromagnetic mute structure. BACKGROUND

[0002] At present, the Chinese patent with the authorization announcement number CN215719295U discloses a kind of variable frequency water pump, comprising: motor, connect water pump, motor is used to provide power for water pump;Mounting plate, connect motor, frequency converter, slidingly connected on mounting plate;Locking piece, between frequency converter and mounting plate, locking piece is used to lock the relative position between frequency converter and mounting plate.

[0003] By the sliding connection between frequency converter and mounting plate, frequency converter is installed on mounting plate, improve the convenience of frequency converter installation and disassembly;The relative position between frequency converter and mounting plate is locked by locking piece, improve the installation stability between frequency converter and mounting plate, and the locking of frequency converter by locking piece is released, i.e. the disassembly of frequency converter can be realized quickly, convenient operation.

[0004] But this kind of variable frequency water pump motor is fixed on mounting plate and exposed outside, when water pump starts, motor works will produce larger noise. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at providing a kind of variable frequency pump with electromagnetic mute structure, to improve the purpose of mute.

[0006] In order to solve the above technical problem, the technical scheme of the utility model is: a kind of variable frequency pump with electromagnetic mute structure, including pump shell, the two ends of the pump shell are fixed and communicated with water inlet pipe and water outlet pipe, the pump shell is fixedly connected with motor, the pump shell is provided with impeller, the motor drives impeller rotation and water is absorbed into pump shell from water inlet pipe, then water is guided from water outlet pipe, further including pump cover fixed on pump shell, the side wall of the pump cover is fixedly connected with frequency converter for being electrically connected with motor, the pump cover is connected with soundproof cover in pump cover through connecting mechanism, the cavity is formed between the soundproof cover and the pump cover, the soundproof cotton is fixed in the cavity, and the soundproof cover is covered outside the motor.

[0007] To realize the above technical scheme, first, soundproof cotton is placed in the cavity between soundproof cover and pump cover, then soundproof cover is fixed on pump cover through connecting mechanism, and pump cover is connected to pump shell, at this time, motor is located inside soundproof cover, when motor starts, most of the noise generated by motor is blocked by soundproof cover and absorbed by soundproof cotton, so that noise can be greatly reduced, and mute effect is improved.

[0008] As a preferred scheme of the utility model, the side of the soundproof cover towards the cavity is fixedly connected with first soundproof felt.

[0009] The above technical solution can further absorb noise.

[0010] As a preferred scheme of the utility model, the pump cover is fixedly connected with a second soundproof felt on one side facing the cavity.

[0011] The above technical solution can further absorb noise.

[0012] As a preferred scheme of the utility model, the connecting mechanism comprises a guide groove, a guide block, a mounting groove, a positioning recess and an elastic sheet, the guide groove is arranged on the inner wall of the pump cover, the length direction of the guide groove is parallel to the axial direction of the pump cover, the guide block is fixed on the outer wall of the soundproof cover and is slidably connected in the guide groove, the positioning recess is arranged on the inner wall of the guide groove, the mounting groove is arranged on the outer wall of the guide block, the elastic sheet is bent into a U shape and both ends thereof are fixed on the inner wall of the mounting groove, and the middle part of the elastic sheet is embedded in the positioning recess.

[0013] The above technical solution places the soundproof cover in the pump cover, so that the guide block is slidably connected in the guide groove to limit the rotation of the soundproof cover, when the elastic sheet corresponds to the positioning recess, the middle part of the elastic sheet is embedded in the positioning recess, and the generated friction force realizes the positioning between the soundproof cover and the pump cover, and the installation is convenient.

[0014] As a preferred scheme of the utility model, a plurality of heat dissipation grooves are arranged on the inner wall of the soundproof cover, and the length direction of the heat dissipation grooves is parallel to the axial direction of the soundproof cover.

[0015] The above technical solution improves the heat absorption effect of the soundproof cover to improve the heat dissipation effect of the motor as much as possible.

[0016] As a preferred scheme of the utility model, a heat conduction plate is connected to the inner wall of the heat dissipation groove, a heat conduction rod is connected to the heat conduction plate, and the heat conduction rod penetrates through the soundproof cover and is connected to the inner wall of the pump cover.

[0017] The above technical solution realizes that the heat conduction plate absorbs the heat of the motor, the heat is transmitted to the pump cover through the heat conduction rod, and the pump cover radiates the heat, so that the heat dissipation effect of the motor is further improved.

[0018] As a preferred scheme of the utility model, a heat conduction hole is arranged on the inner wall of the pump cover, a heat conduction silica gel layer is connected to the inner wall of the heat conduction hole, and the heat conduction rod penetrates into the heat conduction hole.

[0019] The above technical solution enables the heat on the heat conduction rod to be transmitted to the pump cover more quickly, so as to further improve the heat dissipation efficiency.

[0020] As a preferred scheme of the utility model, the heat-conducting plate is provided with a plurality of heat-conducting recessed holes on the side facing the motor.

[0021] The technical scheme achieves the above technical scheme, and increases the heat absorption efficiency of the heat-conducting plate.

[0022] As a preferred scheme of the utility model, the pump cover is provided with a heat dissipation hole on the end facing away from the pump shell, the soundproof cover is fixedly connected with an extension ring on the end close to the heat dissipation hole, the upper end of the extension ring is in abutment with the inner wall of the pump cover through a sealing ring, the heat dissipation hole is located in the extension ring, and a water storage cavity is formed between the extension ring and the soundproof cover.

[0023] The technical scheme achieves the above technical scheme, and increases the heat absorption efficiency of the heat-conducting plate. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is an external structure schematic view of the utility model;

[0025] Figure 2 It is a position schematic view of the frequency conversion controller;

[0026] Figure 3 It is a structure schematic view of the pump cover;

[0027] Figure 4 It is a position schematic view of the heat dissipation hole;

[0028] Figure 5 It is a structure schematic view of the heat-conducting plate;

[0029] Figure 6 It is an external structure schematic view of the soundproof cover;

[0030] Figure 7 It is a position schematic view of the soundproof cotton.

[0031] Reference Signs: 1, pump shell; 11, water inlet pipe; 12, water outlet pipe; 2, pump cover; 21, frequency conversion controller; 3, soundproof cover; 31, cavity; 32, soundproof cotton; 41, first soundproof felt; 42, second soundproof felt; 5, connecting mechanism; 51, guide groove; 52, guide block; 53, mounting groove; 54, positioning recessed hole; 55, elastic sheet; 6, heat dissipation groove; 61, heat-conducting plate; 611, heat-conducting recessed hole; 62, heat-conducting rod; 7, heat-conducting hole; 71, heat-conducting silica gel layer; 8, heat dissipation hole; 9, extension ring; 91, sealing ring. DETAILED DESCRIPTION

[0032] The utility model discloses further make further detailed description to the specific embodiment of the utility model with the drawings, so that the utility model technical scheme is more easy to understand and master.

[0033] A variable frequency pump with electromagnetic mute structure, including pump shell 1, pump cover 2. The both ends of pump shell 1 are fixed and communicated with water inlet pipe 11 and water outlet pipe 12 respectively, and motor (not shown in the drawing) is fixedly connected on pump shell 1, and the motor is located between water inlet pipe 11 and water outlet pipe 12. Rotatably connected with impeller (not shown in the drawing) in pump shell 1, and the impeller is centrifugal impeller.

[0034] The motor drives the impeller to rotate and absorbs water from the water inlet pipe 11 into the pump shell 1, and then discharges the water from the water outlet pipe 12, which is the prior art, and the embodiment will not be described in detail.

[0035] Pump cover 2 is fixedly connected on pump shell 1, and the pump cover 2 is made of stainless steel. The outer wall of pump cover 2 is fixedly connected with frequency converter 21 for electrically connecting with the motor. The soundproof cover 3 made of stainless steel is connected in the pump cover 2 through the connecting mechanism 5. The cavity 31 is formed between the soundproof cover 3 and the pump cover 2, and the soundproof cotton 32 is filled in the cavity 31, and the soundproof cover 3 is arranged outside the motor.

[0036] In order to further improve the mute effect, the first soundproof felt 41 is fixedly connected on one side of the soundproof cover 3 facing the cavity 31 by glue. The second soundproof felt 42 is fixedly connected on one side of the pump cover 2 facing the cavity 31 by glue.

[0037] The connecting mechanism 5 includes guide groove 51, guide block 52, mounting groove 53, positioning recess 54 and spring sheet 55. The guide groove 51 is opened on the inner wall of the pump cover 2, the length direction of the guide groove 51 is parallel to the axial direction of the pump cover 2, and the cross section of the guide groove 51 is square. The guide block 52 is fixed on the outer wall of the soundproof cover 3 and is used for slidingly connecting in the guide groove 51.

[0038] The positioning recess 54 is opened on the inner wall of the guide groove 51, the mounting groove 53 is opened on the outer wall of the guide block 52, the spring sheet 55 is bent into U shape and the both ends are fixed on the inner wall of the mounting groove 53. The middle part of the spring sheet 55 is used for embedding in the positioning recess 54. The spring sheet 55 is made of copper.

[0039] During installation, the first soundproof felt 41 and the second soundproof felt 42 are fixed on the soundproof cover 3 and the pump cover 2 respectively. Then the soundproof cover 3 is partially arranged in the pump cover 2, the soundproof cotton 32 is arranged in the cavity 31, the guide block 52 is slidingly connected in the guide groove 51, when the spring sheet 55 corresponds to the positioning recess 54, the middle part of the spring sheet 55 is embedded into the positioning recess 54, and the friction force generated realizes the positioning between the soundproof cover 3 and the pump cover 2.

[0040] Since the heat dissipation of the sound insulation cotton 32, the first sound insulation felt 41 and the second sound insulation felt 42 is poor, in order to ensure the smooth operation of the motor, the heat dissipation effect of the motor needs to be improved.

[0041] A plurality of heat dissipation grooves 6 are formed on the inner wall of the sound insulation cover 3, and the length direction of the heat dissipation grooves 6 is parallel to the axial direction of the sound insulation cover 3.

[0042] A heat conduction plate 61 made of copper is connected to the inner wall of the heat dissipation grooves 6, and a heat conduction rod 62 made of copper is fixedly connected to the heat conduction plate 61. A heat conduction hole 7 is formed on the inner wall of the pump cover 2, and a heat conduction silica gel layer 71 is pre-coated on the inner wall of the heat conduction hole 7. The heat conduction rod 62 penetrates into the heat conduction hole 7 after passing through the sound insulation cover 3, the first sound insulation felt 41, the second sound insulation felt 42 and the sound insulation cotton 32. The heat conduction rod 62 and the heat conduction plate 61 are positioned by the friction between the heat conduction rod 62 and the sound insulation cover 3 and the adhesion between the heat conduction silica gel layer 71 and the heat conduction rod 62.

[0043] A plurality of heat conduction concave holes 611 are formed on the side of the heat conduction plate 61 facing the motor.

[0044] A heat dissipation hole 8 is formed on the end of the pump cover 2 away from the pump shell 1, and the cross section of the heat dissipation hole 8 is circular. An extension ring 9 is fixedly connected to the end of the sound insulation cover 3 close to the heat dissipation hole 8, and a sealing ring 91 made of rubber is fixedly connected to the upper end of the extension ring 9. The sealing ring 91 is in contact with the inner wall of the pump cover 2, and the heat dissipation hole 8 is located inside the extension ring 9. A water storage cavity is formed between the extension ring 9 and the sound insulation cover 3.

[0045] Water is injected into the water storage cavity, and the water cools the sound insulation cover 3, thereby cooling the motor to improve the heat dissipation effect of the motor.

[0046] Of course, the above is only a typical example of the present application, in addition to this, the present application can have other various specific implementation manners, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A variable frequency pump with an electromagnetic silent structure, comprising a pump casing (1), wherein an inlet pipe (11) and an outlet pipe (12) are fixedly connected to both ends of the pump casing (1), a motor is fixedly connected to the pump casing (1), and an impeller is provided inside the pump casing (1). The motor drives the impeller to rotate and draws water from the inlet pipe (11) into the pump casing (1) and then discharges the water from the outlet pipe (12). The pump is characterized in that: It also includes a pump cover (2) fixed on the pump housing (1), a frequency converter (21) for electrical connection with the motor is fixedly connected to the side wall of the pump cover (2), a sound insulation cover (3) is connected inside the pump cover (2) through a connecting mechanism (5), a cavity (31) is formed between the sound insulation cover (3) and the pump cover (2), a sound insulation cotton (32) is fixed inside the cavity (31), and the sound insulation cover (3) covers the outside of the motor.

2. The variable frequency pump with an electromagnetic silent structure according to claim 1, characterized in that: The soundproof cover (3) is fixedly connected to the first soundproof felt (41) on the side facing the cavity (31).

3. A variable frequency pump with an electromagnetic silent structure according to claim 1 or 2, characterized in that: The pump cover (2) is fixedly connected to the side facing the cavity (31) with a second sound insulation felt (42).

4. A variable frequency pump with an electromagnetic silent structure according to claim 1, characterized in that: The connecting mechanism (5) includes a guide groove (51), a guide block (52), a mounting groove (53), a positioning recess (54), and a spring piece (55). The guide groove (51) is opened on the inner wall of the pump cover (2), and the length direction of the guide groove (51) is parallel to the axial direction of the pump cover (2). The guide block (52) is fixed on the outer wall of the soundproof cover (3) and is used to slide in the guide groove (51). The positioning recess (54) is opened on the inner wall of the guide groove (51). The mounting groove (53) is opened on the outer wall of the guide block (52). The spring piece (55) is bent into a U-shape and its two ends are fixed on the inner wall of the mounting groove (53). The middle part of the spring piece (55) is used to be embedded in the positioning recess (54).

5. A variable frequency pump with an electromagnetic silent structure according to claim 1, characterized in that: The inner wall of the soundproof cover (3) is provided with a plurality of heat dissipation grooves (6), and the length direction of the heat dissipation grooves (6) is parallel to the axial direction of the soundproof cover (3).

6. A variable frequency pump with an electromagnetic silent structure according to claim 5, characterized in that: A heat-conducting plate (61) is connected to the inner wall of the heat dissipation groove (6), and a heat-conducting rod (62) is connected to the heat-conducting plate (61). The heat-conducting rod (62) passes through the sound insulation cover (3) and is connected to the inner wall of the pump cover (2).

7. A variable frequency pump with an electromagnetic silent structure according to claim 6, characterized in that: The pump cover (2) has a heat-conducting hole (7) on its inner wall. A heat-conducting silicone layer (71) is connected to the inner wall of the heat-conducting hole (7). The heat-conducting rod (62) is inserted into the heat-conducting hole (7).

8. A variable frequency pump with an electromagnetic silent structure according to claim 6, characterized in that: The heat-conducting plate (61) has multiple heat-conducting recesses (611) on the side facing the motor.

9. A variable frequency pump with an electromagnetic silent structure according to claim 1, characterized in that: The pump cover (2) has a heat dissipation hole (8) at the end facing away from the pump housing (1). The sound insulation cover (3) is fixedly connected to an extension ring (9) at the end near the heat dissipation hole (8). The upper end of the extension ring (9) abuts against the inner wall of the pump cover (2) through a sealing ring (91). The heat dissipation hole (8) is located inside the extension ring (9). A water storage cavity is formed between the extension ring (9) and the sound insulation cover (3).

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