Noise reduction type mechanical pump

Abstract

The utility model discloses a noise reduction type mechanical pump, belongs to the technical field of mechanical pumps, solves the problems that foam metal of an existing device can only absorb noise on the left side and the right side of a motor, and the noise reduction effect is poor, and comprises a mechanical pump body, a motor is arranged on the top face of the mechanical pump body, and a threaded ring is fixedly installed on the top face of the mechanical pump body. The motor is located in the center of an inner ring of the threaded ring, a noise reduction assembly is arranged outside the motor, the outer cover body is arranged in the threaded ring in a threaded and sleeved mode, noise can be absorbed through the sound absorption cover, the sound absorption holes and the sound insulation plate, the noise is firstly absorbed by the sound absorption cover, then part of the noise penetrating through the sound absorption cover is reflected by the sound absorption holes, and the noise reduction effect is achieved. And then the noise is absorbed again through the sound absorption cover, the noise penetrating through the sound absorption holes can be absorbed again by the sound insulation plate, the purpose of noise reduction can be achieved, the motor is completely located in the noise reduction assembly, the noise absorption effect is better, and the purpose of the noise reduction effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical pumps, in particular to a noise-reducing mechanical pump. Background Art

[0002] A mechanical pump, also known as a mechanical vacuum pump, is a pump that uses mechanical movement (rotation or sliding) to obtain a vacuum. It can expel or absorb air from a closed or semi-closed space to achieve a relative vacuum in the local space. A mechanical pump will generate a lot of noise during operation. Excessive noise can easily cause harm to the human body and affect the surrounding environment.

[0003] After searching, the application with patent number 202222471983.X discloses a noise reduction type mechanical pump, including a mechanical pump body and a protective box, a support plate is provided at the bottom of the protective box, placement slots are provided at the left and right ends of the support plate, a groove is provided on the left front side of the mechanical pump body, a control panel is provided on the right front side of the mechanical pump body, a protective box is provided above the mechanical pump body, mounting slots are provided on the left and right side walls of the protective box, a cooling fan is provided above the mounting slot, a motor is provided in the center of the protective box, a mounting plate is provided below the motor, foam metal is provided on the left and right sides of the motor, and a limiting mechanism is provided below the left and right sides of the protective box, the limiting mechanism includes a transmission box fixedly connected to both sides of the support plate, a rotating block is provided on the right side of the transmission box, a rotating rod is fixedly connected to the inner center of the rotating block, and the left side of the rotating rod passes through the transmission box and the support plate in sequence;

[0004] Although the noise reduction type mechanical pump is helpful in reducing the noise generated by the mechanical pump by arranging foam metal on both sides of the motor, the foam metal of the noise reduction type mechanical pump can only absorb the noise on the left and right sides of the motor, and the noise reduction effect is poor.

[0005] Therefore, we propose a noise-reducing mechanical pump. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a noise-reducing mechanical pump, which solves the problem that the foam metal of the prior device can only absorb the noise on the left and right sides of the motor and has a poor noise reduction effect.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A noise reduction mechanical pump, comprising a mechanical pump body, wherein a motor is provided on the top surface of the mechanical pump body;

[0008] A threaded ring is fixedly mounted on the top surface of the mechanical pump body, the motor is located at the center of the inner ring of the threaded ring, and a noise reduction component is provided on the outside of the motor;

[0009] The noise reduction assembly includes an outer cover, a fan, an inner cover, a sound-absorbing cover, an exhaust pipe, a sound insulation board and an annular plate. The bottom end of the outer cover is threadedly sleeved on the inside of the threaded ring, the inner cover is provided inside the outer cover, the inner wall of the inner cover is fixedly sleeved with a sound-absorbing cover, the side wall of the inner cover is fixedly installed with an exhaust pipe with a rectangular cross-section and uniform distribution, one end of the exhaust pipe is connected to the inside of the inner cover, the outer surface of the outer cover is provided with exhaust grooves whose number and position correspond to the exhaust pipes, the other end of the exhaust pipe is fixedly sleeved on the inside of the exhaust groove, the top surface of the outer cover is provided with a fan, the exhaust pipe divides the space between the outer cover and the inner cover into three fan-shaped spaces, and the three fan-shaped spaces are fixedly sleeved with a sound insulation board.

[0010] Preferably, the sound-absorbing cover and the sound insulation board are both made of foam sound-absorbing board, wherein the foam sound-absorbing board has a porous structure, allowing air to flow freely, thereby enhancing the breathability of the material. The foam sound-absorbing board is also light and easy to install, and can effectively absorb high-frequency sound waves and reduce noise and echo.

[0011] Preferably, the surface of the inner cover is provided with trumpet-shaped and evenly distributed sound-absorbing holes, the opening of the sound-absorbing holes toward the side of the sound-absorbing cover is large and the opening toward the side of the sound insulation board is small, wherein, when the noise passes through the sound-absorbing cover, the trumpet-shaped arrangement of the sound-absorbing holes can reflect the noise, and then reflect the noise toward one side of the sound-absorbing cover, and the noise is absorbed again by the sound-absorbing cover, thereby further reducing the noise.

[0012] Preferably, a mounting groove is provided through the middle of the top surface of the outer cover body, a fan is fixedly mounted inside the mounting groove, an annular plate is fixedly mounted on the top surface of the inner cover body, the annular plate is fixedly mounted on the top surface of the inner part of the outer cover body on the side away from the inner cover body, and the fan is located on the inner circle of the annular plate, wherein the fan can blow air into the interior of the outer cover body, and the annular plate can ensure that the wind blown out by the fan can only enter the interior of the inner cover body first, and then the wind passes through the sound-absorbing holes and the sound-absorbing cover in turn to enter the interior of the sound-absorbing cover, and then passes through the sound-absorbing cover to enter the interior of the exhaust pipe, and finally is discharged through the exhaust pipe, which can increase the air circulation rate around the motor and take away the heat around the motor.

[0013] Preferably, two symmetrically distributed handles are fixedly mounted on the curved surface of the outer cover, wherein the outer cover is easily moved by the handles.

[0014] The utility model provides a noise-reducing mechanical pump, which has the following beneficial effects:

[0015] 1. This noise-reducing mechanical pump, by threading the outer cover body into the interior of the threaded ring, can absorb noise through the sound-absorbing cover, sound-absorbing holes and sound insulation board. The noise is first absorbed by the sound-absorbing cover, and then the noise after passing through the sound-absorbing cover is partially reflected by the sound-absorbing holes, and then absorbed again by the sound-absorbing cover. The noise after passing through the sound-absorbing holes is absorbed again by the sound insulation board, thereby achieving the purpose of noise reduction. In addition, the motor is completely located inside the noise reduction component, which has a better noise absorption effect and achieves the purpose of noise reduction. This solves the problem that the foam metal of the existing device can only absorb the noise on the left and right sides of the motor, resulting in poor noise reduction effect.

[0016] 2. This noise-reducing mechanical pump can blow air into the interior of the outer cover through the fan. The annular plate can ensure that the wind blown by the fan can only enter the interior of the inner cover first, and then the wind passes through the sound-absorbing holes and the sound-absorbing cover in turn to enter the interior of the sound-absorbing cover. The wind inside the sound-absorbing cover is then discharged through the exhaust pipe. In this process, the air circulation rate around the motor is increased, and the heat around the motor can be taken away, thereby achieving the purpose of increasing the heat dissipation rate of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of the threaded ring and noise reduction component of the utility model;

[0019] Figure 3 This is a schematic diagram of the bottom structure of the noise reduction component of the present utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the noise reduction component of the present utility model.

[0021] In the figure: 1. Mechanical pump body; 11. Motor; 2. Threaded ring; 3. Noise reduction component; 31. Outer cover; 32. Mounting groove; 33. Fan; 34. Inner cover; 35. Sound-absorbing cover; 36. Sound-absorbing hole; 37. Exhaust pipe; 38. Exhaust groove; 39. Handle; 310. Sound insulation board; 311. Ring plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0023] like Figure 1-4As shown: It includes a mechanical pump body 1, a motor 11 is provided on the top surface of the mechanical pump body 1, a threaded ring 2 is fixedly installed on the top surface of the mechanical pump body 1, the motor 11 is located at the center of the inner ring of the threaded ring 2, and a noise reduction component 3 is provided on the outside of the motor 11. The noise reduction component 3 includes an outer cover 31, a fan 33, an inner cover 34, a sound absorbing cover 35, an exhaust pipe 37, a sound insulation board 310 and an annular plate 311. The bottom end of the outer cover 31 is threadedly sleeved on the inside of the threaded ring 2, and the outer cover 31 The interior of the outer cover 31 is provided with an inner cover body 34, the inner wall of the inner cover body 34 is fixedly covered with a sound absorbing cover 35, the side wall of the inner cover body 34 is fixedly installed with an exhaust pipe 37 with a rectangular cross-section and uniform distribution, one end of the exhaust pipe 37 is connected to the interior of the inner cover body 34, the outer surface of the outer cover body 31 is provided with exhaust grooves 38 whose number and position correspond to those of the exhaust pipe 37, the other end of the exhaust pipe 37 is fixedly covered inside the exhaust groove 38, the top surface of the outer cover body 31 is provided with a fan 33, the exhaust pipe 37 divides the space between the outer cover 31 and the inner cover 34 into three fan-shaped spaces, and a sound insulation board 310 is fixedly installed in each of the three fan-shaped spaces. The sound absorbing cover 35 and the sound insulation board 310 are made of foam sound-absorbing boards. The surface of the inner cover 34 is provided with trumpet-shaped and evenly distributed sound-absorbing holes 36. The opening of the sound absorbing holes 36 toward the sound absorbing cover 35 is large, and the opening toward the sound insulation board 310 is small. By threading the outer cover 31 into the interior of the threaded ring 2, noise can be absorbed by the sound absorbing cover 35, the sound absorbing holes 36 and the sound insulation board 310. The noise is first absorbed by the sound absorbing cover 35, and then the noise after passing through the sound absorbing cover 35 will be partially reflected by the sound absorbing holes 36, and then absorbed again by the sound absorbing cover 35. The noise after passing through the sound absorbing holes 36 will be absorbed again by the sound insulation board 310, thereby achieving the purpose of noise reduction. Moreover, the motor 11 is completely located inside the noise reduction component 3, which has a better noise absorption effect, thereby achieving the purpose of noise reduction. Example 2

[0024] like Figure 1-4 The fan 33 is located on the inner circle of the annular plate 311, and two symmetrically distributed handles 39 are fixedly mounted on the curved surface of the outer cover 31. The fan 33 can blow air into the inner part of the outer cover 31 through the fan 33. The annular plate 311 can ensure that the wind blown by the fan 33 can only enter the interior of the inner cover 34 through the annular plate 311. The wind then passes through the sound absorbing holes 36 and the sound absorbing cover 35 in turn and enters the interior of the sound absorbing cover 35. The wind inside the sound absorbing cover 35 is then discharged through the exhaust pipe 37. In this process, the air circulation rate around the motor 11 is increased, and the heat around the motor 11 can be taken away, thereby achieving the purpose of increasing the heat dissipation rate of the motor 11.

[0025] Working principle and use process of the present invention: When this noise reduction mechanical pump is in use, the noise generated by the operation of the motor 11 will be transmitted to the outside. The outer cover 31 is threadedly sleeved on the inside of the threaded ring 2, and the noise can be absorbed by the sound absorbing cover 35, the sound absorbing holes 36 and the sound insulation board 310. The noise is first absorbed by the sound absorbing cover 35, and then the noise after passing through the sound absorbing cover 35 will be partially reflected by the sound absorbing holes 36. Then, the noise is absorbed again by the sound absorbing cover 35, and the noise after passing through the sound absorbing holes 36 will be absorbed again by the sound insulation board 310, thereby achieving the purpose of noise reduction.

[0026] Starting the fan 33 can blow air into the interior of the outer cover 31. The annular plate 311 can ensure that the wind blown out by the fan 33 can only enter the interior of the inner cover 34 first, and then the wind passes through the sound-absorbing holes 36 and the sound-absorbing cover 35 in turn to enter the interior of the sound-absorbing cover 35. Then, the wind inside the sound-absorbing cover 35 will be discharged through the exhaust pipe 37. In this process, the air circulation rate around the motor 11 is increased, and the heat around the motor 11 can be taken away.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art 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 essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative 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 range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0028] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A noise-reducing mechanical pump, comprising a mechanical pump body (1), wherein a motor (11) is provided on the top surface of the mechanical pump body (1); Its characteristics are: A threaded ring (2) is fixedly mounted on the top surface of the mechanical pump body (1), the motor (11) is located at the center of the inner ring of the threaded ring (2), and a noise reduction component (3) is provided on the outside of the motor (11); The noise reduction assembly (3) comprises an outer cover (31), a fan (33), an inner cover (34), a sound absorbing cover (35), an exhaust pipe (37), a sound insulation board (310) and an annular plate (311). The bottom end of the outer cover (31) is threadedly sleeved inside the threaded ring (2). The inner cover (34) is provided inside the outer cover (31). The inner wall of the inner cover (34) is fixedly sleeved with a sound absorbing cover (35). The side wall of the inner cover (34) is fixedly installed with an exhaust pipe (37) with a rectangular cross section and uniform distribution. One end of the exhaust pipe (37) is connected to the interior of the inner cover (34); the outer surface of the outer cover (31) is provided with exhaust grooves (38) whose number and position correspond to those of the exhaust pipe (37); the other end of the exhaust pipe (37) is fixedly sleeved inside the exhaust groove (38); a fan (33) is provided on the top surface of the outer cover (31); the exhaust pipe (37) divides the space between the outer cover (31) and the inner cover (34) into three fan-shaped spaces; and a sound insulation board (310) is fixedly sleeved in each of the three fan-shaped spaces.

2. A noise reduction mechanical pump according to claim 1, characterized in that: The sound absorbing cover (35) and the sound insulation board (310) are both made of foam sound absorbing board.

3. The noise reduction mechanical pump according to claim 1, characterized in that: The surface of the inner cover (34) is provided with trumpet-shaped and evenly distributed sound-absorbing holes (36), wherein the sound-absorbing holes (36) have a larger opening toward the sound-absorbing cover (35) and a smaller opening toward the sound insulation board (310).

4. The noise reduction mechanical pump according to claim 1, characterized in that: A mounting groove (32) is provided through the middle of the top surface of the outer cover body (31), a fan (33) is fixedly mounted inside the mounting groove (32), an annular plate (311) is fixedly mounted on the top surface of the inner cover body (34), a side of the annular plate (311) away from the inner cover body (34) is fixedly mounted on the top surface inside the outer cover body (31), and the fan (33) is located on the inner circle of the annular plate (311).

5. The noise reduction mechanical pump according to claim 1, characterized in that: Two symmetrically distributed handles (39) are fixedly mounted on the arc surface of the outer cover (31).

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