Improved oil-free vacuum pump silencing device

Abstract

The utility model discloses an improved oil-free vacuum pump silencing device, which relates to the field of vacuum pump silencing and comprises a vacuum pump main body and an arc-shaped silencing plate detachably mounted on the vacuum pump main body, connecting grooves are formed in two sides of the top end surface of the silencing plate, and a sound insulation plate is mounted at the top end of the silencing plate. Clamping grooves of arc-shaped structures are formed in the two sides of the inner wall of the connecting groove, connecting parts embedded in the connecting groove are fixed to the two ends of the sound insulation plate, and clamping parts embedded in the clamping grooves are elastically arranged on the side walls of the connecting parts. The silencing plate and the sound insulation plate which are clamped with each other are fixed on the vacuum pump body, meanwhile, the positioning rings are installed on the threaded fastening parts at the two ends of the sound insulation plate, the situation that the silencing plate deforms is avoided, the installation stability of the silencing plate is improved, the spring in the telescopic groove in the side wall of the connecting part pushes the clamping part to be inserted into the clamping groove, and the silencing plate is fixed. Therefore, the sound insulation plate and the silencing plate are kept fixed, and the convenience of installation of the silencing plate is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vacuum pump silencer, concretely to an improved oil -free vacuum pump silencer. BACKGROUND

[0002] The vacuum pump on the market will produce certain noise in daily work, and needs to be soundproofed and silenced.

[0003] The patent with the application number 201821591326.6 discloses an oil-free claw type vacuum pump noise reduction device, which comprises a base. Two bases are placed side by side. The lower ends of the left and right sides of the two bases are fixedly installed with mounting blocks. Threaded holes are formed through the center positions of the upper and lower end faces of the four mounting blocks. The four threaded holes are of the same specification. The upper ends of the two bases are fixedly installed with silencer cylinders. The center positions of the opposite sides of the two silencer cylinders are embeddedly installed with sound filtering holes. The two sound filtering holes are both arranged in a honeycomb shape. The opposite sides of the two sound filtering cylinders are provided with circular grooves. The two circular grooves are both arranged outside the corresponding sound filtering holes.

[0004] The above technical solution uses the base to keep the silencer cylinder fixed, and the silencer cylinder is sleeved on the vacuum pump. However, since the silencer cylinder is not connected with the vacuum pump, the stability of the installation between the silencer cylinder and the vacuum pump is poor, and the base will block the heat dissipation grooves of the vacuum pump, thereby affecting the normal use of the vacuum pump. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at providing an improved oil-free vacuum pump silencer to solve the technical problem that the stability of the installation between the silencer cylinder and the vacuum pump is poor due to the fact that the silencer cylinder is not connected with the vacuum pump, and the base will block the heat dissipation grooves of the vacuum pump, thereby affecting the normal use of the vacuum pump.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an improved oil-free vacuum pump silencer, which comprises a vacuum pump main body and a silencer plate in an arc-shaped structure which is detachably installed on the vacuum pump main body. The top end face of the silencer plate is provided with connecting grooves on both sides, and the top end of the silencer plate is provided with a sound insulation plate. The inner walls of the connecting grooves are provided with arc-shaped structure clamping grooves on both sides. The both ends of the sound insulation plate are fixedly provided with connecting parts which are embedded in the connecting grooves. The side walls of the connecting parts are elastically provided with clamping parts which are embedded in the clamping grooves.

[0007] The utility model is further provided that the silencer plate and the sound insulation plate are tightly connected with the outer wall of the vacuum pump main body, and the center position of the silencer plate is provided with a sound absorbing part.

[0008] The utility model is further provided that the both ends of the silencer plate are provided with threaded fastening parts, and the threaded fastening parts are threadedly sleeved with positioning rings.

[0009] The utility model further sets up, the outer wall of sound absorption part is ring array and is equipped with a plurality of sound absorption holes, and the bottom end surface both sides of sound absorption part are fixed with installation portion.

[0010] The utility model further sets up, the both ends of vacuum pump main part are equipped with heat dissipation groove, the central position of installation portion is equipped with the support mounting groove that is linked with vacuum pump main part.

[0011] The utility model further sets up, the lateral wall of connecting portion is equipped with telescopic groove, the joint part is inserted in telescopic groove, and the one end of joint part that stretches out telescopic groove is arc structure and is inserted in the card slot.

[0012] The utility model further sets up, the telescopic groove is inlayed with elastic plate, and the both ends of elastic plate are fixedly connected with the inner wall of telescopic groove and joint part.

[0013] Above all, the utility model mainly has the following beneficial effects: the utility model discloses a sound-absorbing plate and sound insulation board are kept fixed on the vacuum pump main body through the mutual joint of the sound-absorbing plate and sound insulation board, and the positioning ring on the both ends of sound insulation board avoids the deformation of sound-absorbing plate, improves the stability of sound-absorbing plate installation, and the connecting groove is set up on the both sides of the top surface of sound-absorbing plate, the connecting portion on sound insulation board is inserted into the connecting groove, the spring in the telescopic groove of connecting portion side wall pushes joint portion and inserts into the card slot, so that sound insulation board and sound-absorbing plate keep fixed, and then sound insulation board and sound-absorbing plate are closely connected on the vacuum pump main body, and the convenience of sound-absorbing plate installation is improved. ACCURACY

[0014] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0015] Figure 2 It is the split structure schematic diagram of the utility model;

[0016] Figure 3 It is the sectional structure schematic diagram of the utility model sound-absorbing plate;

[0017] Figure 4 It is the sectional structure schematic diagram of the utility model sound insulation board.

[0018] In the drawing: 1, vacuum pump main body, 2, sound insulation board, 3, heat dissipation groove, 4, threaded fastening portion, 5, sound-absorbing plate, 6, sound absorption part, 7, positioning ring, 8, support mounting groove, 9, sound absorption hole, 10, installation portion, 11, card slot, 12, connecting groove, 13, connecting portion, 14, joint portion, 15, telescopic groove, 16, elastic plate. CONCRETE IMPLEMENTATION

[0019] The technical solutions in the embodiments of the utility model will be apparently and completely described below in combination with the drawings in the embodiments of the utility model. The embodiments described below by referring to the drawings are exemplary and are used only for explaining the utility model, and cannot be understood as limiting the utility model.

[0020] An improved oil-free vacuum pump silencing device, as shown in Figures 1-4 The top end of the sound-absorbing plate 5 is provided with a sound-absorbing part 6, and both ends of the sound-absorbing plate 5 are provided with threaded fastening parts 4. The threaded fastening parts 4 are threadedly sleeved with positioning rings 7. The mutually clamped sound-absorbing plate and sound-absorbing plate 2 are kept fixed on the vacuum pump body 1. The threaded fastening parts 4 at both ends of the sound-absorbing plate 2 are provided with positioning rings 7, which avoids the deformation of the sound-absorbing plate 5. The outer wall of the sound-absorbing part 6 is annularly arrayed with a plurality of sound-absorbing holes 9. Both sides of the bottom end face of the sound-absorbing part 6 are fixedly provided with mounting parts 10. Both ends of the vacuum pump body 1 are provided with heat dissipation grooves 3. The center position of the mounting part 10 is provided with a support mounting groove 8 in communication with the vacuum pump body 1. The support seat is kept fixed at the bottom end of the vacuum pump body 1 through the support mounting groove 8.

[0021] The top end of the sound-absorbing plate 5 is provided with a sound-absorbing part 6, and both ends of the sound-absorbing plate 5 are provided with threaded fastening parts 4. The threaded fastening parts 4 are threadedly sleeved with positioning rings 7. The mutually clamped sound-absorbing plate and sound-absorbing plate 2 are kept fixed on the vacuum pump body 1. The threaded fastening parts 4 at both ends of the sound-absorbing plate 2 are provided with positioning rings 7, which avoids the deformation of the sound-absorbing plate 5. The outer wall of the sound-absorbing part 6 is annularly arrayed with a plurality of sound-absorbing holes 9. Both sides of the bottom end face of the sound-absorbing part 6 are fixedly provided with mounting parts 10. Both ends of the vacuum pump body 1 are provided with heat dissipation grooves 3. The center position of the mounting part 10 is provided with a support mounting groove 8 in communication with the vacuum pump body 1. The support seat is kept fixed at the bottom end of the vacuum pump body 1 through the support mounting groove 8.

[0022] Further, the side wall of the connecting part 13 is provided with an expansion slot 15, and the clamping part 14 is slidingly inserted into the expansion slot 15. The end of the clamping part 14 extending out of the expansion slot 15 is arc-shaped and is inserted into the clamping groove 11. A spring plate 16 is embedded in the expansion slot 15. The two ends of the spring plate 16 are fixedly connected with the inner wall of the expansion slot 15 and the clamping part 14. The connecting part 13 of the sound-absorbing plate 2 is inserted into the connecting groove 12. The spring in the expansion slot 15 of the side wall of the connecting part 13 pushes the clamping part 14 to be inserted into the clamping groove 11, so that the sound-absorbing plate 2 and the sound-absorbing plate 5 are kept fixed. The sound-absorbing plate 2 and the sound-absorbing plate 5 are tightly sleeved on the vacuum pump body 1.

[0023] The working principle of the utility model discloses: in use the sound-absorbing plate 5 sliding sleeve joint in the bottom end of vacuum pump main body 1, and install sound insulation board 2 in the top end of vacuum pump main body 1, the connecting portion 13 on sound insulation board 2 is inserted into connecting groove 12, and the spring in the side wall telescopic groove 15 of connecting portion 13 pushes and inserts the clamping portion 14 into the clamping groove 11, so that sound insulation board 2 and sound-absorbing plate 5 keep fixed between, further make sound insulation board 2 and sound-absorbing plate 5 tightly sleeve joint in vacuum pump main body 1, after sound-absorbing plate 5 installation, positioning ring 7 is screwed on the threaded fastening portion 4, and the threaded fastening portion 4 on both ends of sound insulation board 2 installs positioning ring 7, avoids the deformation condition of sound-absorbing plate 5, improves the stability of sound-absorbing plate 5 installation.

[0024] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiment without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.

Claims

1. An improved noise reduction device for an oil-free vacuum pump, comprising a vacuum pump body (1) and a noise reduction plate (5) in the shape of an arc which is detachably mounted on the vacuum pump body (1), characterized in that: The top end face of the sound-absorbing plate (5) is provided with a connecting groove (12) on both sides, and the top end of the sound-absorbing plate (5) is provided with a sound insulation plate (2), the inner wall of the connecting groove (12) is provided with an arc-shaped clamping groove (11) on both sides, both ends of the sound insulation plate (2) are fixedly provided with a connecting part (13) embedded in the connecting groove (12), and the side wall of the connecting part (13) is elastically provided with a clamping part (14) embedded in the clamping groove (11).

2. An improved noise abatement device for an oil-free vacuum pump according to claim 1, characterized in that: The sound-absorbing plate (5) and the sound insulation plate (2) are tightly connected with the outer wall of the vacuum pump body (1), and the central position of the sound-absorbing plate (5) is provided with a sound-absorbing part (6).

3. An improved noise abatement device for an oil-free vacuum pump according to claim 2, characterized in that: Both ends of the sound-absorbing plate (5) are provided with a threaded fastening part (4), and the threaded fastening part (4) is threadedly sleeved with a positioning ring (7).

4. An improved noise abatement device for an oil-free vacuum pump according to claim 2, characterized in that: The outer wall of the sound-absorbing part (6) is provided with a plurality of sound-absorbing holes (9) in an annular array, and both sides of the bottom end face of the sound-absorbing part (6) are fixedly provided with a mounting part (10).

5. An improved noise abatement device for an oil-free vacuum pump according to claim 4, characterized in that: Both ends of the vacuum pump body (1) are provided with a heat dissipation groove (3), and the central position of the mounting part (10) is provided with a support mounting groove (8) communicated with the vacuum pump body (1).

6. An improved noise abatement device for an oil-free vacuum pump according to claim 1, characterized in that: The side wall of the connecting part (13) is provided with an expansion groove (15), the clamping part (14) is slidingly inserted into the expansion groove (15), and one end of the clamping part (14) extending out of the expansion groove (15) is arc-shaped and matched with the clamping groove (11).

7. An improved noise abatement device for an oil-free vacuum pump according to claim 6, characterized in that: The expansion groove (15) is embedded with a resilient plate (16), and both ends of the resilient plate (16) are fixedly connected with the inner wall of the expansion groove (15) and the clamping part (14).

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