Jet type vacuum pump silencer

Abstract

The utility model relates to the technical field of vacuum pumps, and discloses a jet type vacuum pump silencer which comprises a fixing mechanism, a main body mechanism and a front mechanism, the fixing mechanism is located on the outer wall of the main body mechanism, the main body mechanism is located on the right side of the front mechanism, and the fixing mechanism comprises a first clamping ring. A first clamping block is fixedly connected to the left side of the first clamping ring, a first groove is fixedly connected to the inner wall of the first clamping block, a first connecting block is fixedly connected to the right side of the first clamping ring, a rotating shaft is rotatably connected to the right side of the first connecting block, and a second connecting block is rotatably connected to the outer wall of the rotating shaft; the right side of the second connecting block is fixedly connected with a second clamping ring, and the right side of the second clamping ring is fixedly connected with a second clamping block. The first clamping ring on the left side of the first connecting block is in surface contact with the second clamping ring on the right side of the second connecting block through rotation of the rotating shaft, the first clamping block is combined with the second clamping block, and the bolt penetrates through the first groove and the second groove in a threaded mode to complete fixation.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps, in particular to a jet vacuum pump muffler. Background Art

[0002] A muffler is a device that blocks the propagation of sound but allows air to pass through. It is an important measure to eliminate aerodynamic noise. A muffler is a noise-reducing device installed in the airflow channel or in the intake and exhaust system of aerodynamic equipment (such as blowers, air compressors, boiler exhaust ports, generators, water pumps and other equipment with loud exhaust noise). Due to the special properties of the vacuum pump, taking the screw vacuum pump as an example, the pump chamber of the screw vacuum pump is under negative pressure (vacuum), which has a reverse suction effect relative to atmospheric pressure. The gas molecules near the exhaust port of the screw vacuum pump will be sucked back and then discharged. Therefore, the air near the exhaust port of the vacuum pump will flow back and forth, thus creating the phenomenon of panting.

[0003] Application No. 201621228254.X discloses a fan muffler, including a fan muffler housing, the fan muffler housing including a muffler inner wall and a muffler outer wall; the fan muffler housing is cylindrical; the muffler inner wall and the muffler outer wall are filled with soft sound-absorbing material; flanges are provided at both ends of the fan muffler housing; the fan muffler housing is provided with a muffler cavity; a first air distributor is provided in the muffler cavity on the inner side of the right flange; a second air distributor is provided on the left side of the first air distributor; a third air distributor is provided in the muffler cavity on the inner side of the left flange. The utility model fan muffler,

[0004] The noise reduction effect is improved by using three air distributors, but if there is no protection when connecting to the device, gaps may occur, which will affect the noise reduction effect. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the utility model provides a jet vacuum pump muffler, comprising a fixing mechanism, a main body mechanism and a front mechanism, the fixing mechanism is located on the outer wall of the main body mechanism, the main body mechanism is located on the right side of the front mechanism, the fixing mechanism comprises a first clamping ring, a first clamping block is fixedly connected to the left side of the first clamping ring, a first groove is fixedly connected to the inner wall of the first clamping block, a first connecting block is fixedly connected to the right side of the first clamping ring, a rotating shaft is rotatably connected to the right side of the first connecting block, a second connecting block is rotatably connected to the outer wall of the rotating shaft, a second clamping ring is fixedly connected to the right side of the second connecting block, a second clamping ring is fixedly connected to the right side of the second clamping ring, a second clamping block is fixedly connected to the inner wall of the second clamping block, a second groove is fixedly connected to the inner wall of the second groove, and a bolt is threadedly connected to the inner wall of the second groove.

[0006] Through the above technical solution, the rotation of the rotating shaft causes the first clamping ring on the left side of the first connecting block to contact the surface of the second clamping ring on the right side of the second connecting block, the first clamping block is combined with the second clamping block, and the bolt thread passes through the first groove and the second groove to complete the fixation.

[0007] As a further improvement of the above solution, the first clamping block contacts the surface of the second clamping block, the inner wall of the first groove is threadedly connected with a bolt, and the bolt passes through the first groove and the second groove.

[0008] As a further improvement of the above solution, the main body structure includes a muffler, a connection port is fixedly connected to the top of the muffler, a protrusion is fixedly connected to the inner wall of the connection port, and an exhaust port is fixedly connected to the bottom of the muffler.

[0009] Through the above technical solution, the convex block on the inner wall where the muffler connection port is connected to the exhaust port of the vacuum pump is clamped on the inner wall of the exhaust port of the vacuum pump.

[0010] As a further improvement of the above solution, a connection port is provided on the inner wall of the first clamp ring, and the first clamp ring inner wall contacts the surface of the connection port; a connection port is provided on the inner wall of the second clamp ring, and the second clamp ring inner wall contacts the surface of the connection port.

[0011] As a further improvement of the above solution, the front mechanism includes a shell, an air inlet is fixedly connected to the left side of the shell, and a vacuum port is fixedly connected to the bottom of the shell.

[0012] Through the above technical solution, the outer wall of the vacuum pump fixed shell exposes the air inlet and the vacuum port.

[0013] As a further improvement of the above scheme, a shell is arranged on the left side of the connecting port, and the left side of the connecting port contacts the surface of the shell; a shell is arranged on the left side of the first snap ring, and the left side of the first snap ring contacts the surface of the shell; a shell is arranged on the left side of the second snap ring, and the left side of the second snap ring contacts the surface of the shell.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model arranges a first clamp ring and a second clamp ring to fit with the connection port, and fixes the connection port by passing bolts through the first groove and the second groove, thereby reducing the gap between the connection port and the exhaust port of the vacuum pump and improving the silencing effect.

[0016] The utility model improves the fixing effect by arranging a convex block to fit with a groove on the outer wall of the vacuum pump exhaust port, and uses a shell to be fixed on the outer wall of the vacuum pump to reduce the transmission of internal noise by utilizing the sound insulation material contained in the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the erection structure of the main mechanism of the utility model;

[0020] Figure 4 It is a schematic diagram of the fixing mechanism structure of the utility model.

[0021] Description of main symbols:

[0022] 1. Fixing mechanism; 101. First retaining ring; 102. First clamping block; 103. First groove; 104. First connecting block; 105. Rotating shaft; 106. Second connecting block; 107. Second retaining ring; 108. Second clamping block; 109. Second groove; 110. Bolt; 2. Main mechanism; 201. Muffler; 202. Connecting port; 203. Bump; 204. Exhaust port; 3. Pre-mechanism; 301. Shell; 302. Air inlet; 303. Vacuum port. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0024] Example:

[0025] Please combine Figure 1-4 A jet vacuum pump muffler of the present embodiment includes a fixing mechanism 1, a main body mechanism 2 and a front mechanism 3, wherein the fixing mechanism 1 is located on the outer wall of the main body mechanism 2, and the main body mechanism 2 is located on the right side of the front mechanism 3. The fixing mechanism 1 includes a first clamping ring 101, a first clamping block 102 is fixedly connected to the left side of the first clamping ring 101, a first groove 103 is fixedly connected to the inner wall of the first clamping block 102, a first connecting block 104 is fixedly connected to the right side of the first clamping ring 101, a rotating shaft 105 is rotatably connected to the right side of the first connecting block 104, a second connecting block 106 is rotatably connected to the outer wall of the rotating shaft 105, and the second connecting block 106 is on the right side A second clamping ring 107 is fixedly connected, a second clamping block 108 is fixedly connected to the right side of the second clamping ring 107, a second groove 109 is fixedly connected to the inner wall of the second clamping block 108, a bolt 110 is threadedly connected to the inner wall of the second groove 109, and the first clamping ring 101 fits the connection port 202. At this time, the second connecting block 106 is turned over by rotating the shaft 105 to make the second clamping ring 107 contact with the first clamping ring 101, and the first clamping block 102 and the second clamping block 108 want to fit together, and the bolt 110 is threaded through the first groove 103 and the second groove 109 to fix the first clamping ring 101 and the second clamping ring 107 to fit the connection port 202.

[0026] The first clamping block 102 is in contact with the second clamping block 108. The inner wall of the first groove 103 is threadedly connected with a bolt 110. The bolt 110 passes through the first groove 103 and the second groove 109.

[0027] The main body 2 includes a muffler 201, a connection port 202 is fixedly connected to the top of the muffler 201, a protrusion 203 is fixedly connected to the inner wall of the connection port 202, an exhaust port 204 is fixedly connected to the bottom of the muffler 201, and the inner wall of the connection port 202 is connected to the exhaust pipe on the right side of the shell 301.

[0028] The first clamp ring 101 has a connection port 202 on its inner wall, and the connection port 202 is in contact with the inner wall of the first clamp ring 101. The second clamp ring 107 has a connection port 202 on its inner wall, and the connection port 202 is in contact with the inner wall of the second clamp ring 107. The exhaust gas enters the muffler 201 through the connection port 202 and is discharged from the exhaust port 204 after internal silencing.

[0029] The front mechanism 3 includes a shell 301, an air inlet 302 is fixedly connected to the left side of the shell 301, and a vacuum port 303 is fixedly connected to the bottom of the shell 301. When the vacuum pump is in use, the air sucked into the air inlet 302 begins to be compressed. When the vacuum pump is in operation, the sound insulation material inside the shell 301 reduces some noise.

[0030] A shell 301 is arranged on the left side of the connection port 202, and the left side of the connection port 202 contacts the surface of the shell 301; a shell 301 is arranged on the left side of the first snap ring 101, and the left side of the first snap ring 101 contacts the surface of the shell 301; a shell 301 is arranged on the left side of the second snap ring 107, and the left side of the second snap ring 107 contacts the surface of the shell 301.

[0031] The implementation principle of one of the embodiments of the present application is: connect the inner wall of the connecting port 202 with the exhaust pipe on the right side of the shell 301, and fit the first clamping ring 101 to the connecting port 202. At this time, flip the second connecting block 106 by rotating the shaft 105 to make the second clamping ring 107 contact with the first clamping ring 101, and fit the first clamping block 102 and the second clamping block 108. The first clamping ring 101 and the second clamping ring 107 are fixed to the connecting port 202 by the bolt 110 threaded through the first groove 103 and the second groove 109. When the vacuum pump is in use, the air sucked in by the air inlet 302 begins to be compressed. When the vacuum pump is operating, the sound insulation material inside the shell 301 reduces part of the noise. Finally, the exhaust gas enters the muffler 201 through the connecting port 202 and is discharged from the exhaust port 204 after internal silencing.

[0032] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A jet vacuum pump muffler, characterized in that: The device comprises a fixing mechanism (1), a main body mechanism (2) and a front mechanism (3), wherein the fixing mechanism (1) is located on the outer wall of the main body mechanism (2), and the main body mechanism (2) is located on the right side of the front mechanism (3). The fixing mechanism (1) comprises a first clamping ring (101), a first clamping block (102) is fixedly connected to the left side of the first clamping ring (101), a first groove (103) is fixedly connected to the inner wall of the first clamping block (102), a first connecting block (104) is fixedly connected to the right side of the first clamping ring (101), a rotating shaft (105) is rotatably connected to the right side of the first connecting block (104), a second connecting block (106) is rotatably connected to the outer wall of the rotating shaft (105), a second clamping ring (107) is fixedly connected to the right side of the second connecting block (106), a second clamping ring (107) is fixedly connected to the right side of the second clamping ring (107), a second clamping block (108) is fixedly connected to the inner wall of the second clamping block (108), a second groove (109) is fixedly connected to the inner wall of the second groove (109), and a bolt (110) is threadedly connected to the inner wall of the second groove (109).

2. A jet vacuum pump muffler as claimed in claim 1, characterized in that: The first clamping block (102) is in surface contact with the second clamping block (108); the inner wall of the first groove (103) is threadedly connected with a bolt (110); and the bolt (110) passes through the first groove (103) and the second groove (109).

3. The jet vacuum pump muffler according to claim 1, characterized in that: The main body mechanism (2) comprises a muffler (201), the top of the muffler (201) is fixedly connected with a connection port (202), the inner wall of the connection port (202) is fixedly connected with a protrusion (203), and the bottom of the muffler (201) is fixedly connected with an exhaust port (204).

4. A jet vacuum pump muffler as claimed in claim 3, characterized in that: The inner wall of the first clamping ring (101) is provided with a connection port (202), and the inner wall of the first clamping ring (101) is in surface contact with the connection port (202); the inner wall of the second clamping ring (107) is provided with a connection port (202), and the inner wall of the second clamping ring (107) is in surface contact with the connection port (202).

5. The jet vacuum pump muffler according to claim 1, characterized in that: The front mechanism (3) comprises a shell (301), the left side of the shell (301) is fixedly connected with an air inlet (302), and the bottom of the shell (301) is fixedly connected with a vacuum port (303).

6. A jet vacuum pump muffler as claimed in claim 5, characterized in that: A shell (301) is arranged on the left side of the connection port (202), and the left side of the connection port (202) contacts the surface of the shell (301); a shell (301) is arranged on the left side of the first snap ring (101), and the left side of the first snap ring (101) contacts the surface of the shell (301); a shell (301) is arranged on the left side of the second snap ring (107), and the left side of the second snap ring (107) contacts the surface of the shell (301).

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