Dry type screw vacuum pump with silencer

Abstract

The dry type screw vacuum pump with the silencer comprises a pump body, a motor is fixedly installed on the surface of one side of the pump body, one end of the motor is connected with fan blades, a silencer body is fixedly installed on the upper surface of the pump body, and an installation ring is fixedly installed on the surface of one side of the motor. Through use of a filtering mechanism, large-particle impurities and floccules in air can be intercepted through a filtering net between a fixing ring and a fixing rod in a fixing frame, and when blockage occurs after long-time use, a work removing motor is started to work, a driving motor drives a rotating shaft and a second bevel gear to rotate, so that the blockage is avoided; and the first bevel gear, the rotating rod, the connecting rod and the wiping sponge on one side are driven to rotate, the surface of the filter screen can be wiped through the wiping sponge, and it is avoided that the filter screen is blocked, a fan of a motor is not ventilated, the temperature of the motor is increased, and normal operation of a pump body is affected.

Description

Technical Field

[0001] The utility model relates to the relevant field of dry screw vacuum pumps, and in particular to a dry screw vacuum pump with a muffler. Background Art

[0002] The dry screw vacuum pump is an oil-free dry vacuum pump. It uses screw technology and does not require oil lubrication during the exhaust process, so it does not generate oil mist, pollution, and steam. The dry screw vacuum pump is suitable for applications that require high purity, high reliability, and pollution-free, such as semiconductors, optical instruments, and chemical industries. It has the advantages of simple structure, reliable operation, and easy maintenance. At the same time, the dry screw vacuum pump can also withstand a certain intake load and moisture, and has strong adaptability.

[0003] The prior art with patent publication (announcement) number CN214742072U discloses a dry screw vacuum pump with a silencer structure, comprising: a pump body; a motor, the motor is fixedly mounted on the pump body, and the output shaft of the motor is fixedly connected to the driving shaft of the pump body; a muffler, the muffler is fixedly mounted on the exhaust port of the pump body; a fan blade cover, the fan blade cover is fixedly mounted on the motor; a fan blade, the fan blade is arranged in the fan blade cover, and the fan blade is fixedly sleeved on the rotating shaft of the motor; a baffle, the baffle is fixedly mounted on the fan blade cover; a fixing ring, the fixing ring is fixedly mounted on the inner wall of the fan blade cover; a sound-absorbing cotton ring, the sound-absorbing cotton ring is fixedly mounted on the inner wall of the fixing ring; a fixing ring, the fixing ring is fixedly mounted on the motor; a rubber ring, the rubber ring is arranged in the fixing ring, and the end of the sound-absorbing cotton ring away from the baffle is fixedly connected to the rubber ring.

[0004] The above patent document discloses a dry screw vacuum pump with a silencer structure. Although it can solve the problem that the dry screw vacuum pump has a large air dynamic force at its exhaust port and generates a lot of noise when it is running, its disadvantage is that the large particles of impurities and flocs in the air are intercepted by the baffle, which will cause the baffle to be blocked, making the fan of the motor unable to ventilate, causing the motor temperature to rise, and further affecting the normal operation of the pump body.

[0005] Therefore, we make improvements to this and propose a dry screw vacuum pump with a muffler. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a dry screw vacuum pump with a muffler, which solves the problems mentioned in the background technology.

[0007] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0008] Dry screw vacuum pump with muffler to solve the above problems.

[0009] The specific application is as follows:

[0010] It comprises a pump body, a motor is fixedly mounted on one side surface of the pump body, and a fan blade is connected to one end of the motor, a muffler body is fixedly mounted on the upper surface of the pump body, a mounting ring is fixedly mounted on one side surface of the motor, and a protective cover is arranged on one side of the mounting ring, a filtering mechanism is arranged inside the protective cover, and a noise reduction mechanism is arranged on the inner wall of the protective cover, and a connecting mechanism is arranged between the protective cover and the mounting ring;

[0011] The filtering mechanism comprises a fixing frame, and the fixing frame is fixedly installed inside the protective cover, a fixing ring is fixedly installed inside the fixing frame, and a fixing rod is fixedly installed inside the fixing ring, and a filter is fixedly installed on both sides of the fixing rod inside the fixing ring.

[0012] As a preferred technical solution of the present application, the fixed rod is internally rotatably connected to a rotating rod, and a connecting rod is fixedly installed on one end surface of the rotating rod, a wiping sponge is fixedly installed on one side surface of the connecting rod, and the wiping sponge is in contact with the surface of the filter net.

[0013] As a preferred technical solution of the present application, a first bevel gear is fixedly installed on the other end surface of the rotating rod, and a second bevel gear is meshingly connected to a side surface of the first bevel gear, a rotating shaft is fixedly installed inside the second bevel gear, a driving motor is fixedly installed inside the fixed frame, and the output end of the driving motor is fixedly connected to one end of the rotating shaft, and the other end of the rotating shaft is rotatably connected inside the fixed frame.

[0014] As a preferred technical solution of the present application, the noise reduction mechanism includes a connecting ring, and the connecting rings are respectively arranged on the inner walls on both sides of the protective cover, the two connecting rings are internally snap-connected with a sound-absorbing panel, and the sound-absorbing panel is arranged in a circular ring, and sound-absorbing cotton is filled between the sound-absorbing panel and the inner wall of the protective cover.

[0015] As a preferred technical solution of the present application, the connecting mechanism includes a connecting groove, and the connecting groove is provided with a side surface of a mounting ring, and the connection method between one side of the protective cover and the connecting groove is a snap-fit ​​connection, the upper and lower side surfaces of the connecting groove are provided with sliding grooves, and the inside of the sliding groove is slidably connected with a card block, and one side surface of the lower end of the card block is inclined, an oblique groove is provided on the outside of one end of the protective cover, and the connection method between the lower end of the card block and the oblique groove is a snap-fit ​​connection.

[0016] As a preferred technical solution of the present application, a threaded rod is rotatably connected inside the slide groove, and the threaded rod is connected to the clamping block by a threaded connection, and a rotating block is fixedly installed on the other end surface of the threaded rod.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] In the scheme of this application:

[0019] 1. Through the use of the filtering mechanism, the filter between the fixing ring and the fixing rod inside the fixing frame can intercept large particles of impurities and flocs in the air. After long-term use, blockage will occur. Start the working motor, drive the motor to drive the rotating shaft and the second bevel gear to rotate, and drive the first bevel gear, rotating rod, connecting rod and wiping sponge on one side to rotate. The surface of the filter can be wiped by the wiping sponge to avoid blockage of the filter, so that the fan of the motor is not ventilated, resulting in an increase in the temperature of the motor, which in turn affects the normal operation of the pump body.

[0020] 2. Through the use of the connecting mechanism, by rotating the rotating block, the threaded rod can be driven to rotate. When the threaded rod rotates, the card block can be driven to slide up and down in the slide groove. The card block is engaged with the inclined groove, and the card block can move downward to squeeze the inclined groove, and the protective cover can be squeezed, which is convenient for installation and disassembly, and convenient for cleaning the swept dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional structural schematic diagram of a dry screw vacuum pump with a muffler provided in this application;

[0022] Figure 2 A schematic structural diagram of a cross-section of a protective cover of a dry screw vacuum pump with a muffler provided in this application;

[0023] Figure 3 Dry screw vacuum pump with muffler provided for this application Figure 2 The enlarged structural diagram of the middle A part;

[0024] Figure 4 A schematic diagram of the three-dimensional structure of the interior of a dry screw vacuum pump protective cover with a muffler provided in the present application;

[0025] Figure 5 Dry screw vacuum pump with muffler provided for this application Figure 3 A schematic diagram of the enlarged structure of the middle B part;

[0026] Figure 6 Dry screw vacuum pump with muffler provided for this application Figure 3 Schematic diagram of the enlarged structure of part C in the middle.

[0027] Indicated in the figure:

[0028] 1. Pump body; 2. Motor; 3. Muffler body; 4. Mounting ring; 5. Protective cover; 6. Fan blades; 7. Filter mechanism; 701. Fixed frame; 702. Fixed ring; 703. Fixed rod; 704. Filter net; 705. Rotating rod; 706. Connecting rod; 707. Wiping sponge; 708. First bevel gear; 709. Second bevel gear; 710. Rotating shaft; 711. Driving motor; 8. Noise reduction mechanism; 801. Connecting ring; 802. Sound absorbing board; 803. Sound absorbing cotton; 9. Connecting mechanism; 901. Connecting groove; 902. Slide groove; 903. Block; 904. Inclined groove; 905. Threaded rod; 906. Rotating block. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described examples are part of the embodiments of the utility model, not all of the embodiments.

[0030] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper" and "lower" is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In order to solve the technical problems in the background technology, the following dry screw vacuum pump with a muffler is provided:

[0035] Combination Figure 1 - Figure 6 As shown, the utility model provides a dry screw vacuum pump with a muffler, comprising a pump body 1, a motor 2 is fixedly mounted on one side surface of the pump body 1, and a fan blade 6 is connected to one end of the motor 2, a muffler body 3 is fixedly mounted on the upper surface of the pump body 1, a mounting ring 4 is fixedly mounted on one side surface of the motor 2, and a protective cover 5 is arranged on one side of the mounting ring 4, a filtering mechanism 7 is arranged inside the protective cover 5, and a noise reduction mechanism 8 is arranged on the inner wall of the protective cover 5, a connecting mechanism 9 is arranged between the protective cover 5 and the mounting ring 4, the filtering mechanism 7 comprises a fixed frame 701, and the fixed frame 701 is fixedly mounted inside the protective cover 5, a fixed ring 702 is fixedly mounted inside the fixed frame 701, and a fixed rod 703 is fixedly mounted inside the fixed ring 702, and a filter screen 704 is fixedly mounted on both sides of the fixed rod 703 inside the fixed ring 702.

[0036] In this embodiment: when the pump body 1 is working, the pump body 1 can be silenced by the silencer body 3, and when the motor 2 drives the fan blades 6 to rotate, the large particles of impurities and flocs in the air can be intercepted by the filter net 704 between the fixing ring 702 and the fixing rod 703, so as to prevent the debris from entering the protective cover 5 and scratching the fan blades 6 to generate noise.

[0037] refer to Figure 2 - Figure 6 On the basis of the above embodiment, the filter screen 704 that is clogged after long-term use can be cleaned. This embodiment provides the following design:

[0038] As a preferred embodiment, the fixed rod 703 is internally rotatably connected to a rotating rod 705, and a connecting rod 706 is fixedly installed on one end surface of the rotating rod 705, a wiping sponge 707 is fixedly installed on one side surface of the connecting rod 706, and the wiping sponge 707 is in contact with the surface of the filter net 704.

[0039] In this embodiment: the rotating rod 705 can be rotated to drive the connecting rod 706 on the surface and the wiping sponge 707 on the surface of the connecting rod 706 to rotate. Since the wiping sponge 707 fits the filter screen 704, the filter screen 704 can be wiped and cleaned, which can prevent the filter screen 704 from being blocked after long-term use, making the fan of the motor 2 not ventilated, causing the motor temperature to rise, and further affecting the normal operation of the pump body 1.

[0040] refer to Figure 2 - Figure 5On the basis of the above embodiment, the connecting rod 706 and the wiping sponge 707 can be driven to rotate. The present embodiment provides the following design:

[0041] As a preferred embodiment, a first bevel gear 708 is fixedly installed on the other end surface of the rotating rod 705, and a second bevel gear 709 is meshingly connected to the side surface of the first bevel gear 708, a rotating shaft 710 is fixedly installed inside the second bevel gear 709, a driving motor 711 is fixedly installed inside the fixed frame 701, and the output end of the driving motor 711 is fixedly connected to one end of the rotating shaft 710, and the other end of the rotating shaft 710 is rotatably connected inside the fixed frame 701.

[0042] In this embodiment: the driving motor 711 can be started to work, and the driving motor 711 will drive the rotating shaft 710 at the output end to rotate. When the rotating shaft 710 rotates, it will drive the second bevel gear 709 on the surface to rotate, and drive the first bevel gear 708 and the rotating rod 705 to rotate, and then drive the connecting rod 706 and the wiping sponge 707 to rotate, so as to clean the surface of the filter 704.

[0043] refer to Figure 2 - Figure 6 On the basis of the above embodiment, the noise of the electric vacuum pump can be improved. This embodiment provides the following design:

[0044] As a preferred embodiment, the noise reduction mechanism 8 includes a connecting ring 801, and the connecting rings 801 are respectively arranged on the inner walls on both sides of the protective cover 5, and the two connecting rings 801 are internally snap-connected with a sound-absorbing panel 802, and the sound-absorbing panel 802 is arranged in a circular ring, and sound-absorbing cotton 803 is filled between the sound-absorbing panel 802 and the inner wall of the protective cover 5.

[0045] In this embodiment: when the motor 2 drives the fan blades 6 to rotate, the noise generated by the fan blades 6 can be absorbed through the cooperation of the sound absorbing plate 802 and the sound absorbing cotton 803, thereby improving the sound elimination effect.

[0046] refer to Figure 2 - Figure 6 On the basis of the above embodiment, the dust can be easily cleaned. The present embodiment provides the following design:

[0047] As a preferred embodiment, the connecting mechanism 9 includes a connecting groove 901, and the connecting groove 901 is provided with a side surface of the mounting ring 4, and the connection method between one side of the protective cover 5 and the connecting groove 901 is a snap-fit ​​connection, the upper and lower side surfaces of the connecting groove 901 are provided with sliding grooves 902, and the inside of the sliding groove 902 is slidably connected with a block 903, and one side surface of the lower end of the block 903 is inclined, an oblique groove 904 is provided on the outside of one end of the protective cover 5, and the connection method between the lower end of the block 903 and the oblique groove 904 is a snap-fit ​​connection.

[0048] In this embodiment: the block 903 slides in the slide groove 902, and the lower end of the block 903 is engaged with the inclined groove 904, so that the block 903 can be moved into the inclined groove 904 to fix the protective cover 5. The block 903 moves upward to facilitate the disassembly of the protective cover 5 and the cleaning of the dust inside.

[0049] As a preferred embodiment, a threaded rod 905 is rotatably connected inside the slide groove 902 , and the threaded rod 905 is connected to the clamping block 903 by a threaded connection, and a rotating block 906 is fixedly installed on the other end surface of the threaded rod 905 .

[0050] In this embodiment, the threaded rod 905 is threadedly connected to the clamping block 903 , and the rotating block 906 outside the mounting ring 4 is rotated to drive the threaded rod 905 to rotate, so as to drive the clamping block 903 to move in the slide groove 902 .

[0051] Specifically, the working principle of this solution is:

[0052] When in use, when the motor 2 drives the fan blades 6 to rotate, large particles of impurities and flocs in the air can be intercepted through the filter screen 704 between the fixed ring 702 and the fixed rod 703, so as to prevent the debris from entering the protective cover 5 and scraping against the fan blades 6 to generate noise. The drive motor 711 is started to drive the rotating shaft 710 at the output end to rotate. When the rotating shaft 710 rotates, it will drive the second bevel gear 709 on the surface to rotate, and drive the first bevel gear 708 and the rotating rod 705 to rotate, thereby driving the connecting rod 706 and the wiping sponge 707 to rotate, so as to clean the surface of the filter screen 704 and prevent the filter screen 704 from being blocked after long-term use.

[0053] When the motor 2 drives the fan blades 6 to rotate, the noise generated by the fan blades 6 can be absorbed through the cooperation of the sound-absorbing plate 802 and the sound-absorbing cotton 803, thereby improving the silencing effect. The rotating block 906 outside the rotating mounting ring 4 can drive the threaded rod 905 to rotate, thereby facilitating the block 903 to move in the slide groove 902. When the block 903 is not engaged with the inclined groove 904, it is convenient to remove the protective cover 5 and clean the dust after sweeping. The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0054] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A dry screw vacuum pump with a muffler, comprising a pump body (1), characterized in that: A motor (2) is fixedly mounted on one side surface of the pump body (1), and a fan blade (6) is connected to one end of the motor (2); a muffler body (3) is fixedly mounted on the upper surface of the pump body (1); a mounting ring (4) is fixedly mounted on one side surface of the motor (2), and a protective cover (5) is provided on one side of the mounting ring (4); a filtering mechanism (7) is provided inside the protective cover (5), and a noise reduction mechanism (8) is provided on the inner wall of the protective cover (5); and a connecting mechanism (9) is provided between the protective cover (5) and the mounting ring (4); The filtering mechanism (7) comprises a fixing frame (701), and the fixing frame (701) is fixedly mounted inside the protective cover (5); a fixing ring (702) is fixedly mounted inside the fixing frame (701); a fixing rod (703) is fixedly mounted inside the fixing ring (702); and filtering nets (704) are fixedly mounted inside the fixing ring (702) on both sides of the fixing rod (703).

2. A dry screw vacuum pump with a muffler according to claim 1, characterized in that: The fixed rod (703) is rotatably connected to a rotating rod (705) inside, and a connecting rod (706) is fixedly mounted on one end surface of the rotating rod (705), and a wiping sponge (707) is fixedly mounted on one side surface of the connecting rod (706), and the wiping sponge (707) is in contact with the surface of the filter screen (704).

3. A dry screw vacuum pump with a muffler according to claim 2, characterized in that: A first bevel gear (708) is fixedly mounted on the other end surface of the rotating rod (705), and a second bevel gear (709) is meshingly connected to a side surface of the first bevel gear (708), a rotating shaft (710) is fixedly mounted inside the second bevel gear (709), a driving motor (711) is fixedly mounted inside the fixed frame (701), an output end of the driving motor (711) is fixedly connected to one end of the rotating shaft (710), and the other end of the rotating shaft (710) is rotatably connected inside the fixed frame (701).

4. A dry screw vacuum pump with a muffler according to claim 1, characterized in that: The noise reduction mechanism (8) comprises a connecting ring (801), and the connecting rings (801) are respectively arranged on the inner walls of both sides of the protective cover (5), and the interiors of the two connecting rings (801) are snap-connected with a sound absorbing plate (802), and the sound absorbing plate (802) is arranged in a circular ring, and sound absorbing cotton (803) is filled between the sound absorbing plate (802) and the inner wall of the protective cover (5).

5. A dry screw vacuum pump with a muffler according to claim 1, characterized in that: The connecting mechanism (9) comprises a connecting groove (901), and the connecting groove (901) is provided with a side surface of the mounting ring (4), and one side of the protective cover (5) is connected to the connecting groove (901) by a snap-fit ​​connection, the upper and lower side surfaces of the connecting groove (901) are provided with a sliding groove (902), and a clamping block (903) is slidably connected inside the sliding groove (902), and a side surface of the lower end of the clamping block (903) is inclined, and an oblique groove (904) is provided on the outside of one end of the protective cover (5), and the lower end of the clamping block (903) is connected to the oblique groove (904) by a snap-fit ​​connection.

6. A dry screw vacuum pump with a muffler according to claim 5, characterized in that: A threaded rod (905) is rotatably connected inside the slide groove (902), and the threaded rod (905) is connected to the clamping block (903) in a threaded connection manner, and a rotating block (906) is fixedly mounted on the other end surface of the threaded rod (905).

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