Vacuum pump with active noise reduction structure

Abstract

The utility model relates to the technical field of vacuum pumps, in particular to a vacuum pump with an active noise reduction structure, which comprises a pump body, a bottom plate fixed at the bottom of the pump body, a pump cover mounted on one side of the pump body, an air suction pipe fixed on one side of the top of the pump cover, and an air outlet pipe arranged on one side of the air suction pipe and communicated with the pump cover. An impeller is rotationally connected into the pump cover, and a water ring is installed in the pump cover. According to the utility model, the air exhaust capacity of the vacuum pump in use is improved, the use effect of the vacuum pump is better, the sealing effect of the vacuum pump in use is improved, and noise interference to the surroundings is not easily caused.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to a vacuum pump with an active noise reduction structure. Background Art

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical or physicochemical methods to evacuate the container to obtain a vacuum. Generally speaking, a vacuum pump is a device that uses various methods to improve, generate and maintain a vacuum in a closed space.

[0003] The center of a general water ring vacuum pump is on one of the two vertical and horizontal center lines of the cross section of the pump body. The space between the impeller wheel and the water ring is not large enough, resulting in a less than ideal vacuum pumping capacity, which affects the use effect of the vacuum pump; when the vacuum pump is in use, the pipeline is generally sealed and connected to the inlet and outlet pipes through a sealing gasket, but the sealing gasket is prone to aging after a long time, which affects the sealing effect of the vacuum pump when in use; the vacuum pump vibrates when working, and a general vacuum pump is not easy to reduce vibration, which easily causes noise interference to the surrounding environment when the vacuum pump is in use. Utility Model Content

[0004] The utility model aims to provide a vacuum pump with an active noise reduction structure to solve the problems of poor use effect and poor sealing effect of the vacuum pump in the above background technology and easy noise interference to the surrounding environment.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a vacuum pump with an active noise reduction structure, comprising a pump body, a bottom plate fixed to the bottom of the pump body, a pump cover installed on one side of the pump body, an intake pipe fixed to one side of the top position of the pump cover, an exhaust pipe arranged on one side of the intake pipe, the exhaust pipe is communicated with the pump cover, an impeller is rotatably connected to the inside of the pump cover, a water ring is installed inside the pump cover, an active noise reduction mechanism is arranged at the bottom of the bottom plate, the interior of the active noise reduction mechanism includes an active noise reduction component and a buffer pad, an efficient sealing mechanism is arranged on the surfaces of the intake pipe and the exhaust pipe, the efficient sealing mechanism is composed of a sealing ring and an efficient sealing component, an eccentric positioning mechanism is arranged inside the pump cover, and the interior of the eccentric positioning mechanism includes a positioning assembly, a transverse pump axis and a longitudinal pump axis.

[0006] Preferably, an active noise reduction component is arranged below the bottom plate, a buffer pad is adhered to the edge of the bottom of the bottom plate, and the buffer pad is bonded and fixed to the active noise reduction component.

[0007] Preferably, the active noise reduction component is composed of a mounting plate, a shock absorber, a shock absorbing groove and a guide frame, a mounting plate is arranged below the base plate, a surface of the mounting plate is fixedly connected to a surface of a buffer pad, and a shock absorbing groove is provided on the surface of the mounting plate.

[0008] Preferably, shock absorbers are installed inside the shock absorbing grooves, and guide frames are fixed to the bottom of the base plates, and the guide frames and the shock absorbing grooves are slidably matched with each other.

[0009] Preferably, the surfaces of the air intake pipe and the air outlet pipe are provided with high-efficiency sealing components, the outer sides of the high-efficiency sealing components are covered with sealing rings, and the surfaces of the sealing rings are fixedly connected to the surfaces of the air intake pipe and the air outlet pipe, respectively.

[0010] Preferably, the interior of the high-efficiency sealing component includes an annular groove, a stretching spring and an extrusion ring, the surfaces of the intake pipe and the outlet pipe are provided with an annular groove, the interior of the annular groove is provided with an extrusion ring, and one end of the extrusion ring is fixedly connected to the inner wall of the sealing ring.

[0011] Preferably, a stretch spring is fixed to the bottom of the extrusion ring along the circumferential direction, and one end of the stretch spring is fixedly connected to the surface of the annular groove.

[0012] Preferably, a longitudinal pump axis is drawn inside the pump cover, and the longitudinal pump axis coincides with the central axis of the water ring. A transverse pump axis is drawn inside the pump cover, and the transverse pump axis is perpendicular to the longitudinal pump axis and coincides with the central axis of the water ring.

[0013] Preferably, a positioning assembly is provided on the surface of the impeller, and the interior of the positioning assembly includes a longitudinal wheel axis and a transverse wheel axis.

[0014] Preferably, a longitudinal wheel axis is drawn on the surface of the impeller, the longitudinal wheel axis coincides with the central axis of the impeller, the longitudinal wheel axis is located on one side of the longitudinal pump axis, and a transverse wheel axis is arranged on one side of the transverse pump axis, the transverse wheel axis coincides with the central axis of the impeller.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the vacuum pump with active noise reduction structure not only improves the air extraction capacity of the vacuum pump when in use, makes the use effect of the vacuum pump better, improves the sealing effect of the vacuum pump when in use, but also is not easy to cause noise interference to the surroundings;

[0016] By providing an eccentric positioning mechanism, when in use, the center of the impeller of a general vacuum pump is located on the horizontal pump axis or one of the suction pipes, so that the space between the impeller wheel tip and the water ring is not large enough, which easily leads to unsatisfactory suction capacity of the vacuum pump. However, the horizontal wheel axis and the longitudinal wheel axis of the vacuum pump are respectively located on one side of the horizontal pump axis and the longitudinal pump axis, and neither of them coincides with the horizontal pump axis and the longitudinal pump axis, thereby increasing the space between the impeller wheel tip and the water ring to realize the eccentric positioning function of the vacuum pump on the impeller, thereby improving the suction capacity of the vacuum pump when in use, and making the use effect of the vacuum pump better;

[0017] By providing an efficient sealing mechanism, the pipe is connected to the suction pipe. When connected, the pipe squeezes the sealing ring so that it is in close contact with the surface of the sealing ring, and the pipe and the suction pipe are sealed. At this time, under the action of the extension spring, a thrust can be generated on the squeezing ring, so that the squeezing ring moves upward along the annular groove, squeezing the sealing ring so that the sealing ring is always in close contact with the pipe, and the pipe and the suction pipe are efficiently sealed. Similarly, the pipe is connected to the exhaust pipe to realize the efficient sealing function of the vacuum pump, thereby improving the sealing effect of the vacuum pump when in use;

[0018] By setting up an active noise reduction mechanism, the vacuum pump will generate vibration when working, resulting in loud noise. At this time, the bottom plate can be damped by the shock absorber inside the shock absorbing groove to reduce the noise of the vacuum pump. The bottom plate can be guided conveniently by the guide frame, and the bottom plate can be buffered and shock-reduced by the buffer pad, so as to realize the active shock-reduction and noise reduction function of the vacuum pump, so that the vacuum pump is not easy to cause noise interference to the surrounding when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0020] Figure 2 It is a side cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0022] Figure 4 It is an enlarged structural schematic diagram of the high-efficiency sealing mechanism of the utility model.

[0023] In the figure: 1. pump body; 101. bottom plate; 102. pump cover; 103. suction pipe; 104. exhaust pipe; 105. water ring; 106. impeller; 2. active noise reduction mechanism; 201. active noise reduction component; 2011. mounting plate; 2012. shock absorber; 2013. shock absorbing groove; 2014. guide frame; 202. buffer pad; 3. high-efficiency sealing mechanism; 301. sealing ring; 302. high-efficiency sealing component; 3021. annular groove; 3022. extension spring; 3023. extrusion ring; 4. eccentric positioning mechanism; 401. positioning assembly; 4011. longitudinal wheel axis; 4012. transverse wheel axis; 402. transverse pump axis; 403. longitudinal pump axis. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] The utility model provides a vacuum pump with an active noise reduction structure. Figure 1 and Figure 2 As shown, it includes a pump body 1, a bottom plate 101 is fixed to the bottom of the pump body 1, a pump cover 102 is installed on one side of the pump body 1, an air intake pipe 103 is fixed to one side of the top position of the pump cover 102, an air outlet pipe 104 is arranged on one side of the air intake pipe 103, the air outlet pipe 104 is connected to the pump cover 102, an impeller 106 is rotatably connected inside the pump cover 102, and a water ring 105 is installed inside the pump cover 102.

[0026] Furthermore, if Figure 2As shown, an active noise reduction mechanism 2 is provided at the bottom of the base plate 101, and the interior of the active noise reduction mechanism 2 includes an active noise reduction component 201 and a buffer pad 202. The active noise reduction component 201 is provided below the base plate 101, and the buffer pad 202 is adhered to the edge of the bottom of the base plate 101, and the buffer pad 202 is bonded and fixed to the active noise reduction component 201. The active noise reduction component 201 consists of a mounting plate 2011, a shock absorber 2012, a shock absorbing groove 2013 and a guide frame 2014. A mounting plate 2011 is provided below the base plate 101, and the surface of the mounting plate 2011 is fixedly connected to the surface of the buffer pad 202. The surface of the mounting plate 2011 is provided with a shock absorbing groove 2013, and the shock absorber 2012 is installed inside the shock absorbing groove 2013. A guide frame 2014 is fixed to the bottom of the base plate 101, and the guide frame 2014 and the shock absorbing groove 2013 slide with each other.

[0027] When in use, the vacuum pump will generate vibrations when working, resulting in loud noise. At this time, the shock absorber 2012 inside the shock absorbing groove 2013 can perform shock absorbing operation on the bottom plate 101 to reduce the noise of the vacuum pump. The guide frame 2014 can facilitate the guidance of the bottom plate 101, and the buffer pad 202 can buffer and reduce shock on the bottom plate 101 to realize the active shock absorbing and noise reduction function of the vacuum pump.

[0028] Furthermore, if Figure 4 As shown, the surfaces of the intake pipe 103 and the outlet pipe 104 are provided with a high-efficiency sealing mechanism 3, and the high-efficiency sealing mechanism 3 is composed of a sealing ring 301 and a high-efficiency sealing component 302. The surfaces of the intake pipe 103 and the outlet pipe 104 are provided with a high-efficiency sealing component 302, and the outer side of the high-efficiency sealing component 302 is covered with a sealing ring 301, and the surfaces of the sealing ring 301 are respectively fixedly connected to the surfaces of the intake pipe 103 and the outlet pipe 104, and the interior of the high-efficiency sealing component 302 includes an annular groove 3021, a stretch spring 3022 and an extrusion ring 3023. The surfaces of the intake pipe 103 and the outlet pipe 104 are provided with an annular groove 3021, and the interior of the annular groove 3021 is provided with an extrusion ring 3023, one end of the extrusion ring 3023 is fixedly connected to the inner wall of the sealing ring 301, and the bottom of the extrusion ring 3023 is fixedly connected with an extension spring 3022 along the circumferential direction, and one end of the extension spring 3022 is fixedly connected to the surface of the annular groove 3021.

[0029] When in use, it is connected to the intake pipe 103 through a pipe. When connected, the pipe squeezes the sealing ring 301 so that it is tightly attached to the surface of the sealing ring 301, thereby sealing the pipe and the intake pipe 103. At this time, under the action of the extension spring 3022, a thrust can be generated on the squeezing ring 3023, so that the squeezing ring 3023 moves upward along the annular groove 3021, squeezing the sealing ring 301 so that the sealing ring 301 is always tightly attached to the pipe, thereby efficiently sealing the pipe and the intake pipe 103. Similarly, the pipe is connected to the exhaust pipe 104 to realize the efficient sealing function of the vacuum pump.

[0030] Furthermore, if Figure 3 As shown, the pump cover 102 is provided with an eccentric positioning mechanism 4 inside, and the eccentric positioning mechanism 4 includes a positioning component 401, a transverse pump axis 402 and a longitudinal pump axis 403 inside, and the longitudinal pump axis 403 is drawn inside the pump cover 102, and the longitudinal pump axis 403 coincides with the central axis of the water ring 105, and the transverse pump axis 402 is drawn inside the pump cover 102, and the transverse pump axis 402 and the longitudinal pump axis 403 are perpendicular to each other, and the transverse pump axis 402 coincides with the central axis of the water ring 105 A positioning component 401 is provided on the surface of the impeller 106, and the interior of the positioning component 401 includes a longitudinal wheel axis 4011 and a transverse wheel axis 4012. The surface of the impeller 106 is drawn with the longitudinal wheel axis 4011, and the longitudinal wheel axis 4011 coincides with the central axis of the impeller 106. The longitudinal wheel axis 4011 is located on one side of the longitudinal pump axis 403, and a transverse wheel axis 4012 is provided on one side of the transverse pump axis 402, and the transverse wheel axis 4012 coincides with the central axis of the impeller 106.

[0031] When in use, the center of the impeller 106 of a general vacuum pump is located on the transverse pump axis 402 or one of the suction pipes 103, so that the space between the wheel tip of the impeller 106 and the water ring 105 is not large enough, which easily leads to unsatisfactory suction capacity of the vacuum pump. The transverse wheel axis 4012 and the longitudinal wheel axis 4011 of the vacuum pump are respectively located on one side of the transverse pump axis 402 and the longitudinal pump axis 403, and neither coincides with the transverse pump axis 402 and the longitudinal pump axis 403, thereby increasing the space between the wheel tip of the impeller 106 and the water ring 105 to realize the eccentric positioning function of the vacuum pump on the impeller 106, thereby improving the suction capacity of the vacuum pump when in use.

[0032] Working principle: When in use, first connect it to the suction pipe 103 through the pipe. When connected, the pipe squeezes the sealing ring 301, so that it is in close contact with the surface of the sealing ring 301, and the pipe and the suction pipe 103 are sealed. At this time, under the action of the extension spring 3022, a thrust can be generated on the squeezing ring 3023, so that the squeezing ring 3023 moves upward along the annular groove 3021, squeezing the sealing ring 301, so that the sealing ring 301 is always in close contact with the pipe, and the pipe and the suction pipe 103 are efficiently sealed. Similarly, the pipe is connected to the exhaust pipe 104 to realize the efficient sealing function of the vacuum pump, thereby improving the sealing effect of the vacuum pump when in use.

[0033] When in use, the center of the impeller 106 of a general vacuum pump is located on the transverse pump axis 402 or one of the suction pipes 103, so that the space between the wheel tip of the impeller 106 and the water ring 105 is not large enough, which easily leads to unsatisfactory suction capacity of the vacuum pump. The transverse wheel axis 4012 and the longitudinal wheel axis 4011 of the vacuum pump are respectively located on one side of the transverse pump axis 402 and the longitudinal pump axis 403, and neither coincides with the transverse pump axis 402 and the longitudinal pump axis 403, thereby increasing the space between the wheel tip of the impeller 106 and the water ring 105 to realize the eccentric positioning function of the vacuum pump on the impeller 106, thereby improving the suction capacity of the vacuum pump when in use and making the use effect of the vacuum pump better.

[0034] The vacuum pump will generate vibration when working, resulting in loud noise. At this time, under the action of the shock absorber 2012 inside the shock absorbing groove 2013, the bottom plate 101 can be damped to reduce the noise of the vacuum pump. Under the action of the guide frame 2014, the bottom plate 101 can be guided conveniently, and under the action of the buffer pad 202, the bottom plate 101 can be buffered and damped, so as to realize the active shock absorption and noise reduction function of the vacuum pump, so that the vacuum pump is not easy to cause noise interference to the surroundings when in use, and finally complete the use of the vacuum pump.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A vacuum pump with an active noise reduction structure, comprising a pump body (1), characterized in that: A bottom plate (101) is fixed to the bottom of the pump body (1); a pump cover (102) is installed on one side of the pump body (1); an air intake pipe (103) is fixed to one side of the top of the pump cover (102); an air outlet pipe (104) is provided on one side of the air intake pipe (103); the air outlet pipe (104) is connected to the pump cover (102); an impeller (106) is rotatably connected to the inside of the pump cover (102); a water ring (105) is installed inside the pump cover (102); an active noise reduction mechanism is provided at the bottom of the bottom plate (101). The active noise reduction mechanism (2) comprises an active noise reduction component (201) and a buffer pad (202) inside the active noise reduction mechanism (2); the surfaces of the air intake pipe (103) and the air outlet pipe (104) are provided with a high-efficiency sealing mechanism (3); the high-efficiency sealing mechanism (3) is composed of a sealing ring (301) and a high-efficiency sealing component (302); the pump cover (102) is provided with an eccentric positioning mechanism (4); the eccentric positioning mechanism (4) comprises a positioning assembly (401), a transverse pump axis (402) and a longitudinal pump axis (403) inside the eccentric positioning mechanism (4).

2. A vacuum pump with an active noise reduction structure according to claim 1, characterized in that: An active noise reduction component (201) is arranged below the bottom plate (101), a buffer pad (202) is adhered to the edge of the bottom of the bottom plate (101), and the buffer pad (202) is bonded and fixed to the active noise reduction component (201).

3. The vacuum pump with active noise reduction structure according to claim 2, characterized in that: The active noise reduction component (201) is composed of a mounting plate (2011), a shock absorber (2012), a shock absorbing groove (2013) and a guide frame (2014); the mounting plate (2011) is arranged below the bottom plate (101); the surface of the mounting plate (2011) is fixedly connected to the surface of the buffer pad (202); and the surface of the mounting plate (2011) is provided with a shock absorbing groove (2013).

4. The vacuum pump with active noise reduction structure according to claim 3, characterized in that: A shock absorber (212) is installed inside the shock absorbing groove (2013), and a guide frame (2014) is fixed to the bottom of the bottom plate (101), and the guide frame (2014) and the shock absorbing groove (2013) are slidably matched with each other.

5. The vacuum pump with active noise reduction structure according to claim 1, characterized in that: The surfaces of the air intake pipe (103) and the air outlet pipe (104) are provided with a high-efficiency sealing component (302), the outer side of the high-efficiency sealing component (302) is covered with a sealing ring (301), and the surface of the sealing ring (301) is fixedly connected to the surface of the air intake pipe (103) and the air outlet pipe (104), respectively.

6. The vacuum pump with active noise reduction structure according to claim 5, characterized in that: The interior of the high-efficiency sealing component (302) comprises an annular groove (3021), a stretch spring (3022) and an extrusion ring (3023); the surfaces of the air intake pipe (103) and the air outlet pipe (104) are provided with an annular groove (3021); the interior of the annular groove (3021) is provided with an extrusion ring (3023); one end of the extrusion ring (3023) is fixedly connected to the inner wall of the sealing ring (301).

7. The vacuum pump with active noise reduction structure according to claim 6, characterized in that: A stretch spring (3022) is fixed to the bottom of the extrusion ring (3023) along the circumferential direction, and one end of the stretch spring (3022) is fixedly connected to the surface of the annular groove (3021).

8. The vacuum pump with active noise reduction structure according to claim 1, characterized in that: A longitudinal pump axis (403) is drawn inside the pump cover (102), and the longitudinal pump axis (403) coincides with the central axis of the water ring (105). A transverse pump axis (402) is drawn inside the pump cover (102), and the transverse pump axis (402) is perpendicular to the longitudinal pump axis (403), and the transverse pump axis (402) coincides with the central axis of the water ring (105).

9. The vacuum pump with active noise reduction structure according to claim 8, characterized in that: A positioning component (401) is provided on the surface of the impeller (106), and the interior of the positioning component (401) contains a longitudinal wheel axis (4011) and a transverse wheel axis (4012).

10. The vacuum pump with active noise reduction structure according to claim 9, characterized in that: A longitudinal wheel axis (4011) is drawn on the surface of the impeller (106), and the longitudinal wheel axis (4011) coincides with the central axis of the impeller (106). The longitudinal wheel axis (4011) is located on one side of the longitudinal pump axis (403), and a transverse wheel axis (4012) is provided on one side of the transverse pump axis (402), and the transverse wheel axis (4012) coincides with the central axis of the impeller (106).

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