Silent oil-free vacuum pump

Abstract

The utility model discloses a mute type oilless vacuum pump, which relates to the technical field of oilless vacuum pumps and comprises a first mute box and a second mute box, the second mute box is arranged on one side of the first mute box, and a sound insulation plate is arranged at the inner bottom of the first mute box. According to the mute type oil-free vacuum pump, the sound insulation plates are laid at the inner bottoms of the first mute box and the second mute box, the sound insulation plates can effectively block sound transmission, the overall sound insulation effect is improved, sound absorption cotton is arranged on the inner side walls of the first mute box and the second mute box, and the sound insulation effect is improved. The sound-absorbing cotton is in threaded fastening connection with the silencing box and the sound insulation plate through the first bolt and the second bolt, the stability of the sound-absorbing cotton can be guaranteed, sound generated in the silencing box can be absorbed through the sound-absorbing cotton, noise transmission is further reduced, the overall sound insulation effect is improved, the use comfort of the vacuum pump is improved, and the service life of the vacuum pump is prolonged. And the device can also play an important role in some occasions with strict requirements on noise.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil -free vacuum pump technical field, concretely is a mute type oil -free vacuum pump. BACKGROUND

[0002] Oil -free vacuum pump is a kind of mechanical vacuum pump without any oil to operate work, with simple structure, easy operation, convenient maintenance, will not pollute the environment and so on, oil -free vacuum pump durability is good, is the vacuum, compression, dual -purpose vacuum pump, it is a kind of very extensive application range obtains the basic equipment of vacuum.

[0003] But the existing oil -free vacuum pump when using, still have certain problem:

[0004] The prior art such as application No. CN201320486361.2 an oil -free vacuum pump. Its purpose is to provide a kind of oil -free vacuum pump with small volume, low cost, high working efficiency. The utility model discloses a pump body, rotor, motor, rotary blade, upper end cover, lower end cover. The lower end cover is provided at the bottom of the pump body, the motor is installed below the lower end cover, the motor spindle passes through the round hole on the lower end cover and extends into the pump body, the rotor is arranged in the pump body deviating from the center position, the rotor is installed on the motor spindle, four grooves are evenly provided along the radial direction of the rotor, one rotary blade is embedded in each groove, the rotary blade bottom is connected with the groove bottom through spring, the upper end cover is provided at the top of the pump body, the center position of the upper end cover is provided with a blowdown valve, the pump body is provided with air inlet and air outlet on both sides respectively;

[0005] The above-mentioned oil -free vacuum pump under the condition of high speed operation, its inside will cause the mechanical operation influence to lead to produce certain noise, noise not only can influence surrounding environment, also can influence the normal work of staff, causes the condition of low work efficiency, and when needing to maintain and overhaul oil -free vacuum pump, it is inconvenient to disassemble, causes disassembly difficult, brings difficulty for subsequent overhaul work;

[0006] Therefore, we propose a mute type oil -free vacuum pump to solve the problems raised in the above. INVENTION CONTENTS

[0007] The utility model aims at providing a mute type oil -free vacuum pump to solve the problems raised in the above background technology that the oil -free vacuum pump under the condition of high speed operation, its inside will cause the mechanical operation influence to lead to produce certain noise, noise not only can influence surrounding environment, also can influence the normal work of staff, causes the condition of low work efficiency, and when needing to maintain and overhaul oil -free vacuum pump, it is inconvenient to disassemble, causes disassembly difficult, brings difficulty for subsequent overhaul work.

[0008] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a mute type oil -free vacuum pump, including first mute box and second mute box:

[0009] The side of the first mute box is provided with the second mute box, the inner bottom of the first mute box is provided with the sound insulation board, the inner side wall of the second mute box is connected with the sound absorption cotton, the first bolt is penetrated through the top of the sound absorption cotton, and the sound absorption cotton is connected with the second mute box by the first bolt, the second bolt is penetrated through the bottom end of the sound absorption cotton, the second bolt is penetrated through the middle of the sound insulation board, and the sound absorption cotton is connected with the sound insulation board and the second mute box by the second bolt, and the sound absorption cotton is provided with two groups.

[0010] The sound insulation board can effectively block the propagation of sound, improve the overall sound insulation effect, and the sound absorption cotton can absorb the sound generated in the mute box, thereby further reducing the propagation of noise and improving the overall sound insulation effect.

[0011] Preferably, the side of the first mute box is fixed with a clamping block, the outer surface of the clamping block is provided with an inner cavity, the inner wall of the inner cavity is fixed with a first spring, and the top end of the first spring is fixed with a limiting piece.

[0012] The limiting piece is designed on the surface of the clamping block, the longitudinal section of the limiting piece is triangular, and the limiting piece can limit the movement of the clamping block under the elastic action of the first spring, so as to maintain the stability of the connected structure.

[0013] Preferably, the side of the second mute box is fixed with a fixing frame, the inner side bearing of the fixing frame is connected with a rotating shaft, the middle part of the rotating shaft is movably connected with a clamping plate, the middle part of the clamping plate is provided with a clamping groove, the clamping block is connected with the clamping groove, and the limiting piece is connected with the clamping plate.

[0014] The clamping plate is connected with the clamping block through the clamping groove, the limiting piece is connected with the outer surface of the clamping plate, the movement of the clamping plate is limited, the connection is stable and reliable, the assembly and disassembly are convenient, and the internal pump body can be maintained in the later period.

[0015] Preferably, the outer surface of the sound insulation board is provided with a positioning hole, the top of the sound insulation board is provided with a pump body, the bottom of the pump body is fixed with a positioning rod, the outer surface of the positioning rod is provided with a insertion hole, and the positioning rod is evenly distributed with four groups along the lower end surface of the pump body.

[0016] Adopting the technical scheme, the pump body passes through the positioning hole in the middle of the sound insulation plate through the positioning rod and penetrates the bottom of the mute box, so that the pump body can be accurately placed on the sound insulation plate, and stable positioning can be realized through cooperation of the positioning hole and the positioning rod, which can effectively prevent the pump body from moving or tilting on the sound insulation plate and improve stability.

[0017] Preferably, the bottom of the first mute box is fixed with a fixing seat, a sliding groove is formed in the middle of the fixing seat, a through hole is formed in one side of the fixing seat, a second spring is fixed to the inner wall of the fixing seat, a tab is fixed to one end of the second spring, and an insertion block is fixed to one side of the tab and forms a clamping structure with the insertion hole and the positioning rod.

[0018] Adopting the technical scheme, by pulling the tab, the tab drives the insertion block to move, and after the tab is loosened, the tab drives the insertion block to reset under the elastic action of the second spring, and the insertion hole and the insertion hole on the positioning rod form clamping connection, so as to fix the positioning rod, and then the pump body is fixed on the sound insulation plate, and then the installation and disassembly are facilitated, and the convenience of installation is improved.

[0019] Preferably, a pressure gauge is arranged on the outer surface of the first mute box, a base is fixed to the bottom of the first mute box, and a handle is fixed to the top of the first mute box.

[0020] Adopting the technical scheme, by arranging the base at the bottom of the first mute box and the second mute box, the stability during placement can be ensured, and the mute box will not tilt due to external force during use, so that the pump body is protected from damage, and by increasing the design of the handle, the user can easily and safely operate, especially when the position of the mute box needs to be moved or adjusted, the existence of the handle greatly simplifies the operation process and improves the work efficiency.

[0021] Compared with the prior art, the utility model has the advantages that:

[0022] 1. By arranging the sound insulation plate at the inner bottom of the first mute box and the second mute box, the sound insulation plate can effectively block the propagation of sound and improve the overall sound insulation effect, and by arranging the sound-absorbing cotton on the inner side wall of the first mute box and the second mute box, the sound-absorbing cotton is threadedly fastened to the mute box and the sound insulation plate through the first bolt and the second bolt, so that the stability of the sound-absorbing cotton can be ensured, and the sound-absorbing cotton can absorb the sound generated in the mute box, thereby further reducing the propagation of noise and improving the overall sound insulation effect, which not only improves the use comfort of the vacuum pump, but also can play an important role in some occasions with strict requirements on noise;

[0023] 2. The positioning rod passes through the sound insulation plate and the middle part of the mute box, and the engagement connection is formed by the insertion block and the insertion hole on the positioning rod, so that the pump body can be accurately placed on the sound insulation plate, and stable positioning can be realized through the cooperation of the positioning hole and the positioning rod, which can effectively prevent the pump body from moving or tilting on the sound insulation plate, improve the stability, realize stable and easy-to-disassemble connection, and facilitate installation and disassembly, and improve the convenience of installation. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a front view of the structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the main body disassembly structure of the utility model;

[0026] Figure 3 It is a schematic diagram of the utility model Figure 1 It is a schematic diagram of the structure of the part at A in the utility model;

[0027] Figure 4 It is a schematic diagram of the connection structure of the fixed seat and the positioning rod of the utility model;

[0028] Figure 5 It is a schematic diagram of the cross-sectional structure of the second mute box of the utility model.

[0029] In the drawing: 1, first mute box; 2, pressure gauge; 3, base; 4, handle; 5, clamping block; 6, inner cavity; 7, first spring; 8, limiting piece; 9, second mute box; 10, fixed frame; 11, rotating shaft; 12, clamping plate; 13, clamping groove; 14, sound insulation plate; 15, positioning hole; 16, pump body; 17, positioning rod; 18, insertion hole; 19, fixed seat; 20, sliding groove; 21, through hole; 22, second spring; 23, push piece; 24, insertion block; 25, sound absorbing cotton; 26, first bolt; 27, second bolt. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0031] In order to solve the problem that the internal part of the oil-free vacuum pump will be affected by mechanical operation to produce a certain noise, which will not only affect the surrounding environment, but also affect the normal work of the workers, the following scheme is disclosed, please refer to Figures 1-5The utility model provides a technical scheme: a mute type oil -free vacuum pump, including first mute box 1 and second mute box 9: the side of first mute box 1 is provided with second mute box 9, and the inner bottom of first mute box 1 is provided with sound insulation board 14, and the inner side wall of second mute box 9 is connected with sound absorption cotton 25, and the top of sound absorption cotton 25 is penetrated with first bolt 26, and sound absorption cotton 25 is connected with second mute box 9 in screw fastening by first bolt 26, and the bottom of sound absorption cotton 25 is penetrated with second bolt 27, and second bolt 27 penetrates the middle part of sound insulation board 14, and sound absorption cotton 25 is connected with sound insulation board 14 and second mute box 9 in screw fastening by second bolt 27, and sound absorption cotton 25 sets two groups. Through the inner bottom of first mute box 1 and second mute box 9 and the inner bottom of first mute box 1 and second mute box 9 are laid sound insulation board 14, sound insulation board 14 can effectively block the spread of sound, improve the sound insulation effect of whole, and set up sound absorption cotton 25 in the inner side wall of first mute box 1 and second mute box 9, and sound absorption cotton 25 is connected with mute box and sound insulation board 14 respectively in screw fastening by first bolt 26 and second bolt 27, can ensure the stability of sound absorption cotton 25, can further reduce noise propagation by sound absorption cotton 25 and absorb the sound generated in mute box, and improve the sound insulation effect of whole, not only improve the use comfort of vacuum pump, but also can play an important role in some occasions with strict noise requirements.

[0032] The side of first mute box 1 is fixed with clamping block 5, the outer surface of clamping block 5 is provided with inner cavity 6, the inner wall of inner cavity 6 is fixed with first spring 7, and the top of first spring 7 is fixed with limiting piece 8. The side of second mute box 9 is fixed with fixed frame 10, the inner side bearing of fixed frame 10 is connected with rotating shaft 11, the middle part of rotating shaft 11 is movably connected with clamping plate 12, the middle part of clamping plate 12 is provided with clamping groove 13, clamping block 5 and clamping groove 13 are connected in the form of clamping, and limiting piece 8 and clamping plate 12 are connected in the form of clamping. Increase the connecting structure between first mute box 1 and second mute box 9, rotate clamping plate 12 manually, clamping plate 12 rotates around rotating shaft 11, retract limiting piece 8 into the middle part of inner cavity 6 of clamping block 5 manually, then pass clamping groove 13 through the outer surface of clamping block 5, when limiting piece 8 is located at the side of clamping plate 12, limiting piece 8 is reset under the elastic action of first spring 7, so as to limit clamping plate 12 through limiting piece 8, so as to ensure that first mute box 1 and second mute box 9 are connected together tightly through the clamping connection of clamping block 5 and clamping groove 13 and the clamping connection of limiting piece 8 and clamping plate 12, and first mute box 1 and second mute box 9 can be separated conveniently, so as to facilitate the maintenance of internal pump body 16, convenient operation, improve the maintenance efficiency, and prolong the service life of equipment.

[0033] The outer surface of the sound insulation board 14 is provided with a positioning hole 15, and the upper portion of the sound insulation board 14 is provided with a pump body 16. The bottom of the pump body 16 is fixedly provided with a positioning rod 17, and the outer surface of the positioning rod 17 is provided with a plurality of insertion holes 18. The bottom of the first mute box 1 is fixedly provided with a fixed seat 19, and the middle portion of the fixed seat 19 is provided with a sliding groove 20. The side of the fixed seat 19 is provided with a through hole 21, and the inner wall of the fixed seat 19 is fixedly provided with a second spring 22. One end of the second spring 22 is fixedly provided with a push piece 23, and the side of the push piece 23 is fixedly provided with an insertion block 24. The insertion block 24 is connected with the positioning rod 17 through the insertion hole 18 to form a clamping structure. The bottom of the pump body 16 is fixedly provided with four positioning rods 17, which pass through the positioning hole 15 in the middle of the sound insulation board 14 and penetrate the bottom of the mute box. The positioning hole 15 is exposed outside the mute box. Then, the insertion block 24 is moved by manually pushing the push piece 23. After the push piece 23 is loosened, the insertion block 24 is reset under the elastic action of the second spring 22. The insertion block 24 is connected with the insertion hole 18 in the positioning rod 17 through the clamping structure, so that the pump body 16 can be accurately placed on the sound insulation board 14. The positioning hole 15 and the positioning rod 17 can be stably positioned. The pump body 16 can be effectively prevented from moving or tilting on the sound insulation board 14, and the stability is improved. The stable and easy-to-disassemble connection is realized, and the installation and disassembly are facilitated, and the installation convenience is improved.

[0034] The outer surface of the first mute box 1 is provided with a pressure gauge 2, the bottom of the first mute box 1 is fixedly provided with a base 3, and the upper portion of the first mute box 1 is fixedly provided with a handle 4. The pressure gauge 2 is designed on the outer surface of the first mute box 1, which can be used for real-time monitoring and display of the pressure condition in the mute box. The user can know the working state at any time, prevent equipment failure or damage, and design four bases 3 on the bottom of the mute box. The base 3 can ensure that it will not be tilted or moved due to external force during use, so that the pump body 16 is not damaged. The handle 4 is designed, which can realize convenient carrying and moving of the equipment by the user, so as to greatly improve the working efficiency of the equipment.

[0035] Working principle: for this kind of mute type oil-free vacuum pump, when the mute type oil-free vacuum pump works, the pump body 16 is stably fixed on the sound insulation plate 14 through the clamping connection of the positioning rod 17 and the plug block 24, the sound insulation plate 14 and the sound absorbing cotton 25 jointly act to reduce the noise generated by the pump body 16 during work, the first soundproof box 1 and the second soundproof box 9 are tightly connected together through the clamping block 5, the clamping groove 13, the limiting piece 8 and the clamping plate 12 and other components, forming a whole with good sound insulation effect, the pressure gauge 2 monitors the pressure condition in the soundproof box in real time, ensuring the normal work of the equipment, the base 3 ensures the stable placement of the equipment, the handle 4 facilitates the user to carry and move, when it is necessary to overhaul or replace the pump body 16, only simple operation is needed to realize the separation of the first soundproof box 1 and the second soundproof box 9 and the disassembly of the pump body 16, improving the use efficiency and facilitating the later overhaul and maintenance.

[0036] Thus a series of work is completed, and the contents not described in detail in the specification belong to the prior art known by the person skilled in the art.

[0037] Although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or part of the technical features can be replaced equivalently, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A mute type oil-free vacuum pump, comprising a first mute box (1) and a second mute box (9), characterized in that: One side of the first mute box (1) is provided with the second mute box (9), the inner bottom of the first mute box (1) is provided with a sound insulation board (14), the inner side wall of the second mute box (9) is connected with sound-absorbing cotton (25), the upper part of the sound-absorbing cotton (25) is penetrated by a first bolt (26), and the sound-absorbing cotton (25) is threadedly fastened with the second mute box (9) through the first bolt (26), the bottom end of the sound-absorbing cotton (25) is penetrated by a second bolt (27), the second bolt (27) penetrates the middle part of the sound insulation board (14), and the sound-absorbing cotton (25) is threadedly fastened between the sound insulation board (14) and the second mute box (9) through the second bolt (27), and the sound-absorbing cotton (25) is provided with two groups.

2. A silent oil-free vacuum pump according to claim 1, characterized in that: One side of the first mute box (1) is fixed with a clamping block (5), an inner cavity (6) is formed in the outer surface of the clamping block (5), a first spring (7) is fixed to the inner wall of the inner cavity (6), and a limiting piece (8) is fixed to the top end of the first spring (7).

3. A silent oil-free vacuum pump according to claim 1, characterized in that: One side of the second mute box (9) is fixed with a fixing frame (10), a rotating shaft (11) is connected to the inner side of the fixing frame (10) in a bearing manner, a clamping plate (12) is movably connected to the middle part of the rotating shaft (11), a clamping groove (13) is formed in the middle part of the clamping plate (12), the clamping block (5) is connected with the clamping groove (13) in a clamping manner, and the limiting piece (8) is connected with the clamping plate (12) in a clamping manner.

4. A silent oil-free vacuum pump according to claim 1, characterized in that: A positioning hole (15) is formed in the outer surface of the sound insulation board (14), a pump body (16) is arranged above the sound insulation board (14), a positioning rod (17) is fixed to the bottom of the pump body (16), an insertion hole (18) is formed in the outer surface of the positioning rod (17), and the positioning rod (17) is uniformly distributed with four groups along the lower end surface of the pump body (16).

5. A silent, oil-free vacuum pump according to claim 4, characterized in that: A fixing seat (19) is fixed to the bottom of the first mute box (1), a sliding groove (20) is formed in the middle part of the fixing seat (19), a through hole (21) is formed in one side of the fixing seat (19), a second spring (22) is fixed to the inner wall of the fixing seat (19), a tab (23) is fixed to one end of the second spring (22), an insertion block (24) is fixed to one side of the tab (23), and the insertion block (24) and the positioning rod (17) constitute a clamping structure through the insertion hole (18).

6. A silent oil-free vacuum pump according to claim 1, characterized in that: A pressure gauge (2) is arranged on the outer surface of the first mute box (1), a base (3) is fixed to the bottom of the first mute box (1), and a handle (4) is fixed to the upper part of the first mute box (1).

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