Silencing diaphragm pump

Abstract

The utility model relates to the technical field of diaphragm pumps, and discloses a silencing diaphragm pump which comprises a diaphragm pump body and a silencing pipe, a through hole is formed in the middle of the silencing pipe, and a silencing mechanism is arranged in the middle of the outer wall of the silencing pipe. The silencing mechanism comprises an inner sleeve, sound absorption cotton, a rubber ring and an outer sleeve, the middle of the inner sleeve is fixedly connected to the middle of the outer wall of the silencing pipe, the sound absorption cotton is located between the inner wall of the inner sleeve and the outer wall of the silencing pipe, and the middle of the outer sleeve is fixedly connected to the outer side of the middle of the outer wall of the silencing pipe. The outer wall of the rubber ring is fixedly connected to the interior of the outer sleeve. According to the diaphragm pump, airflow can make contact with the sound absorption cotton through the through holes in the silencing pipe, noise generated by the airflow can be absorbed through the sound absorption cotton, meanwhile, vibration generated by the airflow in the inner sleeve can be absorbed through the rubber ring, the noise generated when the airflow enters and exits the diaphragm pump is greatly reduced, and the quality of the working environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm pumps, in particular to a sound-absorbing diaphragm pump. Background Art

[0002] Diaphragm pumps, also known as control pumps, are the main type of actuators. They receive control signals output by the control control unit and use power to change the fluid flow rate. The role of the diaphragm pump in the control process is to receive control signals from the regulator or computer, change the flow rate of the regulated medium, and maintain the regulated parameters within the required range, thereby achieving automation of the production process.

[0003] It has been found in the use of existing diaphragm pumps that, since the diaphragm pumps currently use air pressure to agitate the membranes on both sides, the noise generated during the ventilation process is relatively large, and the large noise will reduce the quality of the working environment and affect the health of the workers. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a sound-absorbing diaphragm pump, which aims to improve the problem that the existing diaphragm pump generates a lot of noise during the ventilation process, thereby reducing the quality of the working environment and affecting the health of the workers.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a silencer diaphragm pump, comprising a diaphragm pump and a silencer pipe, a through hole is opened in the middle of the silencer pipe, and a silencer mechanism is arranged in the middle of the outer wall of the silencer pipe;

[0006] The silencer mechanism includes an inner sleeve, sound-absorbing cotton, a rubber ring, and an outer sleeve. The middle part of the inner sleeve is fixedly connected to the middle part of the outer wall of the silencer pipe, the sound-absorbing cotton is located between the inner wall of the inner sleeve and the outer wall of the silencer pipe, the middle part of the outer sleeve is fixedly connected to the outer side of the middle part of the outer wall of the silencer pipe, the outer wall of the rubber ring is fixedly connected to the inside of the outer sleeve, the inner wall of the rubber ring is located at the outer wall of the inner sleeve, one end of the silencer pipe is connected to a connecting pipe, the connecting pipe is threadedly connected to a diaphragm pump, and the other end of the silencer pipe is connected to an air guide pipe.

[0007] As a further description of the above technical solution:

[0008] An air inlet and an air outlet are arranged on one side of the diaphragm pump, and two of the silencer mechanisms, the air guide pipe and the connecting pipe are arranged, and the two silencer mechanisms are respectively connected with the air inlet and the air outlet through two connecting pipes.

[0009] As a further description of the above technical solution:

[0010] A plurality of transverse plates are fixedly connected to the outside of the outer sleeve, and the plurality of transverse plates are evenly distributed on the outer wall of the outer sleeve.

[0011] As a further description of the above technical solution:

[0012] One end of the silencer pipe is connected to one end of the connecting pipe through a flange, and a filter screen is arranged between the silencer pipe and the connecting pipe.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the other end of the muffler pipe is fixedly connected with a convex ring, the outer wall of the convex ring is connected with a clamping ring, and one side of the inner wall of the clamping ring is threadedly connected to the outer wall of one end of the air guide pipe.

[0015] As a further description of the above technical solution:

[0016] A groove is provided on the other side of the inner wall of the clamping ring, and the outer wall of the convex ring is located in the groove.

[0017] As a further description of the above technical solution:

[0018] A plurality of anti-slip strips are fixedly connected to the outer wall of the clamping ring.

[0019] As a further description of the above technical solution:

[0020] A sealing ring is arranged between the silencer pipe and the air guide pipe.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the airflow can contact with the sound-absorbing cotton through the through hole on the silencer pipe, and the sound-absorbing cotton can absorb the noise generated by the airflow. At the same time, the vibration of the internal sleeve caused by the airflow can be absorbed by the rubber ring, so that the noise generated by the airflow in and out of the diaphragm pump is greatly reduced, thereby improving the quality of the working environment.

[0023] 2. In the utility model, the silencer pipe and the connecting pipe are connected by using a flange, and a filter is provided between the two, so as to prevent debris from entering the interior of the diaphragm pump. At the same time, the silencer pipe and the air duct are connected by using a clamping ring, and the silencer pipe and the air duct can be separated by rotating the clamping ring. Finally, the silencer pipe can be removed by disassembling the flange, which is beneficial to the later maintenance of the silencer pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a left side cross-sectional view of a silencer pipe of a silencer diaphragm pump proposed by the utility model;

[0025] Figure 2 This is a three-dimensional structural schematic diagram of a noise-absorbing diaphragm pump proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of a diaphragm pump part of a noise-absorbing diaphragm pump proposed by the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the silencer pipe of a silencer diaphragm pump proposed by the utility model;

[0028] Figure 5 The utility model is a left side cross-sectional view of an air guide pipe of a noise-absorbing diaphragm pump.

[0029] Legend:

[0030] 1. Diaphragm pump; 2. Connecting pipe; 3. Silencer; 4. Through hole; 5. Inner sleeve; 6. Sound-absorbing cotton; 7. Rubber ring; 8. Outer sleeve; 9. Horizontal plate; 10. Air inlet; 11. Air outlet; 12. Air guide pipe; 13. Filter; 14. Convex ring; 15. Snap ring; 16. Anti-slip strip; 17. Sealing ring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the specification of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-3 The utility model provides an embodiment: a sound-absorbing diaphragm pump, comprising a diaphragm pump 1 and a sound-absorbing pipe 3, a through hole 4 is opened in the middle of the sound-absorbing pipe 3, and a sound-absorbing mechanism is arranged in the middle of the outer wall of the sound-absorbing pipe 3; the sound-absorbing mechanism comprises an inner sleeve 5, sound-absorbing cotton 6, a rubber ring 7, and an outer sleeve 8, the middle part of the inner sleeve 5 is fixedly connected to the middle part of the outer wall of the sound-absorbing pipe 3, the sound-absorbing cotton 6 is between the inner wall of the inner sleeve 5 and the outer wall of the sound-absorbing pipe 3, the middle part of the outer sleeve 8 is fixedly connected to the outer side of the middle part of the outer wall of the sound-absorbing pipe 3, the outer wall of the rubber ring 7 is fixedly connected to the inside of the outer sleeve 8, and the inner wall of the rubber ring 7 is located at the outer wall of the inner sleeve 5, one end of the sound-absorbing pipe 3 is connected to a connecting pipe 2, the connecting pipe 2 is threadedly connected to the diaphragm pump 1, and the other end of the sound-absorbing pipe 3 is connected to an air guide pipe 12. When the gas passes through the silencer 3, the gas can come into contact with the sound-absorbing cotton 6 through the through hole 4 opened on the silencer 3. The sound-absorbing cotton 6 can absorb the generated noise, thereby reducing the noise level. When noise occurs, it will cause the internal sleeve 5 to vibrate. At this time, the rubber ring 7 arranged on the outside of the internal sleeve 5 can reduce the swing amplitude of the internal sleeve 5 by utilizing the elasticity of the rubber ring 7 itself, thereby further reducing the noise level and improving the quality of the working environment for the staff.

[0033] Reference Figure 3-5 , an air inlet 10 and an air outlet 11 are arranged on one side of the diaphragm pump 1, and two muffler mechanisms, air guide pipes 12 and connecting pipes 2 are arranged, and the two muffler mechanisms are connected to the air inlet 10 and the air outlet 11 respectively through the two connecting pipes 2. It should be noted that the outer side of the connecting pipe 2 is provided with threads, and the inner walls of the air inlet 10 and the air outlet 11 are provided with threads. A plurality of transverse plates 9 are fixedly connected to the outside of the external sleeve 8, and the plurality of transverse plates 9 are evenly distributed on the outer wall of the external sleeve 8. One end of the muffler pipe 3 is connected to one end of the connecting pipe 2 by a flange, and a filter screen 13 is arranged between the muffler pipe 3 and the connecting pipe 2. The transverse plate 9 can form a bulge on the outer side of the external sleeve 8, which can help the user to grasp the external sleeve 8. By providing a filter screen 13 between the muffler pipe 3 and the connecting pipe 2, the gas entering the inside of the diaphragm pump 1 can be filtered to prevent foreign matter from entering the inside of the diaphragm pump 1. The outer wall of the other end of the silencer pipe 3 is fixedly connected with a convex ring 14, and the outer wall of the convex ring 14 is connected with a clamping ring 15. One side of the inner wall of the clamping ring 15 is threadedly connected to the outer wall of one end of the air guide pipe 12. It should be noted that the inner wall of the clamping ring 15 is provided with threads, and the outer side of the air guide pipe 12 is provided with threads. A groove is provided on the other side of the inner wall of the clamping ring 15, and the outer wall of the convex ring 14 is in the groove. By removing the bolts and nuts, the silencer pipe 3 and the connecting pipe 2 can be separated at this time, and the silencer pipe 3 and the air guide pipe 12 can be separated by rotating the clamping ring 15 in the opposite direction. At this time, the silencer pipe 3 can be replaced, which is conducive to later maintenance.

[0034] Reference Figure 5 The outer wall of the clamp ring 15 is fixedly connected with a plurality of anti-slip strips 16. A sealing ring 17 is provided between the muffler pipe 3 and the air duct 12. By providing the anti-slip strips 16 on the outer wall of the clamp ring 15, the clamp ring 15 can be easily rotated, and by providing the sealing ring 17 between the muffler pipe 3 and the air duct 12, the muffler pipe 3 and the air duct 12 can be in a sealed state.

[0035] Working principle: When in use, first screw the two connecting pipes 2 into the air inlet 10 and the air outlet 11 on one side of the diaphragm pump respectively, then place the filter 13 at one end of the connecting pipe 2, and by picking up the outer sleeve 8, a bulge can be formed on the outer side of the outer sleeve 8 by using the horizontal plate 9 on the outer side of the outer sleeve 8, which can help the user to grasp the outer sleeve 8, and then put one end of the silencer pipe 3 close to one end of the connecting pipe 2, and then the silencer pipe 3 and the connecting pipe 2 can be fixed together by the flange and bolts and nuts. Then, the sealing ring 17 is placed in the clamp ring 15 at the other end of the silencer pipe 3, and one end of the air guide pipe 12 is brought close to the other end of the silencer pipe 3. At this time, the clamp ring 15 is rotated, and the air guide pipe 12 can be continuously moved closer to the silencer pipe 3 by the rotation of the clamp ring 15. By squeezing the sealing ring 17, a sealed state can be formed between the air guide pipe 12 and the silencer pipe 3. At this time, air can be supplied to the diaphragm pump through the air guide pipe 12, the silencer pipe 3 and the connecting pipe 2 at the top, and the gas discharged from the diaphragm pump can be discharged from the diaphragm pump. The air is discharged from the air outlet 11 and finally discharged through the connecting pipe 2, the silencer pipe 3 and the air duct 12 at the bottom. When the gas passes through the silencer pipe 3, the gas can contact with the sound-absorbing cotton 6 through the through hole 4 opened on the silencer pipe 3. The sound-absorbing cotton 6 can absorb the noise generated, thereby reducing the size of the noise. When the noise occurs, it will cause the internal sleeve 5 to vibrate. At this time, the rubber ring 7 arranged on the outside of the internal sleeve 5 can be used to reduce the swing amplitude of the internal sleeve 5 by utilizing the elasticity of the rubber ring 7 itself, thereby further reducing the size of the noise and improving the quality of the working environment of the staff. By removing the bolts and nuts, the silencer pipe 3 and the connecting pipe 2 can be separated. By rotating the retaining ring 15 in the opposite direction, the silencer pipe 3 and the air duct 12 can be separated. At this time, the silencer pipe 3 can be replaced, which is beneficial to the later maintenance. At the same time, the distance between the silencer pipe 3 and the diaphragm pump can be extended through the connecting pipe 2, thereby avoiding the problem that the silencer pipe 3 is close to the diaphragm pump, resulting in a small space and inconvenient operation.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A silencer diaphragm pump, comprising a diaphragm pump (1) and a silencer pipe (3), Features: A through hole (4) is provided in the middle of the silencer pipe (3), and a silencer mechanism is provided in the middle of the outer wall of the silencer pipe (3); The silencer mechanism comprises an inner sleeve (5), sound-absorbing cotton (6), a rubber ring (7), and an outer sleeve (8); the middle portion of the inner sleeve (5) is fixedly connected to the middle portion of the outer wall of the silencer pipe (3); the sound-absorbing cotton (6) is located between the inner wall of the inner sleeve (5) and the outer wall of the silencer pipe (3); the middle portion of the outer sleeve (8) is fixedly connected to the outer side of the middle portion of the outer wall of the silencer pipe (3); the outer wall of the rubber ring (7) is fixedly connected to the inside of the outer sleeve (8); the inner wall of the rubber ring (7) is located on the outer wall of the inner sleeve (5); one end of the silencer pipe (3) is connected to a connecting pipe (2); the connecting pipe (2) is threadedly connected to a diaphragm pump (1); and the other end of the silencer pipe (3) is connected to an air guide pipe (12).

2. A sound-absorbing diaphragm pump according to claim 1, Features: An air inlet (10) and an air outlet (11) are provided on one side of the diaphragm pump (1), and two of the silencer mechanism, the air guide pipe (12) and the connecting pipe (2) are provided, and the two silencer mechanisms are respectively connected to the air inlet (10) and the air outlet (11) through two connecting pipes (2).

3. A sound-absorbing diaphragm pump according to claim 1, Features: A plurality of transverse plates (9) are fixedly connected to the outside of the outer sleeve (8), and the plurality of transverse plates (9) are evenly distributed on the outer wall of the outer sleeve (8).

4. A sound-absorbing diaphragm pump according to claim 1, Features: One end of the silencer pipe (3) is connected to one end of the connecting pipe (2) via a flange, and a filter screen (13) is provided between the silencer pipe (3) and the connecting pipe (2).

5. A sound-absorbing diaphragm pump according to claim 1, Features: A convex ring (14) is fixedly connected to the outer wall of the other end of the muffler pipe (3), a clamping ring (15) is connected to the outer wall of the convex ring (14), and one side of the inner wall of the clamping ring (15) is threadedly connected to the outer wall of one end of the air guide pipe (12).

6. A sound-absorbing diaphragm pump according to claim 5, Features: A groove is provided on the other side of the inner wall of the clamping ring (15), and the outer wall of the convex ring (14) is located in the groove.

7. A sound-absorbing diaphragm pump according to claim 5, Features: A plurality of anti-slip strips (16) are fixedly connected to the outer wall of the clamping ring (15).

8. A sound-absorbing diaphragm pump according to claim 5, Features: A sealing ring (17) is provided between the silencer pipe (3) and the air guide pipe (12).

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