Silencer with overvoltage protection function

Abstract

The utility model relates to the technical field of silencers, and provides a silencer with an overvoltage protection function, which comprises a fixed seat, an upper cover, a lower cover and an adjusting valve plate, the upper end of the fixed seat is provided with a vent hole, a ventilation ring groove and an air leakage channel, and the lower end of the fixed seat is provided with a buffer cavity; the upper cover is arranged at the upper end of the fixed seat, an air outlet hole and an air release hole are formed in the upper end of the upper cover, the air outlet hole is communicated with the vent hole, the air release hole is communicated with the air release channel, a mounting groove is formed in the lower end of the upper cover, and the air outlet hole and the air release hole are both communicated with the mounting groove; the lower cover is arranged at the lower end of the fixed seat, and the lower end of the lower cover is communicated with the buffer cavity; the adjusting valve plate is arranged in the mounting groove, and the adjusting valve plate is elastically propped against the fixed seat, so that the ventilation ring groove is isolated from the air leakage channel. Therefore, the damage to the inflation part can be avoided as much as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of silencers, in particular to a silencer with overpressure protection function. BACKGROUND

[0002] The air pump is a device capable of extracting or injecting air from a closed space, which is often used in various massage chairs, blood pressure meters and other devices.

[0003] Among them, the air pump is easy to produce noise in the working process due to air flow vibration, therefore, the air pump will be externally connected with a silencer to reduce noise. However, in actual application, when the air pump supplies air pressure that is too large, it may cause damage to the inflatable components such as air bags or air bags, therefore, improvement is needed. CONTENT OF THE UTILITY MODEL

[0004] In order to avoid damage to the inflatable components as much as possible, the present application provides a silencer with overpressure protection function.

[0005] The silencer with overpressure protection function provided by the present application adopts the following technical scheme:

[0006] A silencer with overpressure protection function, comprising a fixed seat, an upper cover, a lower cover and an adjusting valve piece; the upper end of the fixed seat is provided with a ventilation hole, a ventilation ring groove and a gas discharge channel, the ventilation ring groove is in communication with the gas discharge channel, the lower end of the fixed seat is provided with a buffer cavity, the ventilation hole and the ventilation ring groove are both in communication with the buffer cavity; the upper cover is arranged at the upper end of the fixed seat, the upper end of the upper cover is provided with a gas outlet hole and a gas discharge hole, the gas outlet hole is in communication with the ventilation hole, the gas discharge hole is in communication with the gas discharge channel, the lower end of the upper cover is provided with a mounting groove, and the gas outlet hole and the gas discharge hole are both in communication with the mounting groove; the lower cover is arranged at the lower end of the fixed seat, the lower end of the lower cover is in communication with the buffer cavity; the adjusting valve piece is arranged in the mounting groove, and the adjusting valve piece is elastically abutted to the fixed seat, so that the ventilation ring groove is isolated from the gas discharge channel.

[0007] By adopting the above technical scheme, in actual application, the gas outlet hole of the upper cover is in communication with the inflatable components such as air bags or air bags, the lower end of the lower cover is connected with the air pump, the air pump discharges gas to the buffer cavity through the lower cover, and then flows through the ventilation hole and the gas outlet hole from the buffer cavity, so as to realize the inflation of the inflatable components, and under the buffering of the buffer cavity, the noise in the inflation process is reduced;

[0008] When the air pump supplies air pressure that is too large, the gas in the buffer cavity flows into the ventilation ring groove to lift the adjusting valve piece, so that the ventilation ring groove is in communication with the gas discharge channel, and the gas in the buffer cavity flows from the gas discharge channel to the gas discharge hole, so as to reduce the air pressure of the inflatable components, so as to play the overpressure protection function, thereby avoiding damage to the inflatable components as much as possible.

[0009] Preferably, one end of the air release channel extends to one side of the fixing base and is provided with a sealing member.

[0010] By adopting the technical scheme, one end of the air release channel extends to one side of the fixing base, so as to facilitate injection molding of the air release channel, and the sealing member seals one end of the air release channel, so that the gas flows from the air release channel to the air release hole.

[0011] Preferably, the fixing base is provided with a plurality of reinforcing ribs at the buffer cavity.

[0012] By adopting the technical scheme, the fixing base is provided with a plurality of reinforcing ribs, so as to avoid deformation of the fixing base during injection molding, thereby improving the stability of injection molding of the fixing base.

[0013] Preferably, the adjusting valve piece includes a mounting portion, a deformation portion and an abutting portion, the mounting portion is arranged in the mounting groove, the deformation portion is arranged between the mounting portion and the abutting portion, and the abutting portion abuts against the fixing base.

[0014] By adopting the technical scheme, the mounting portion, the deformation portion and the abutting portion are arranged, when the air pressure supplied by the air pump is too large, the deformation portion deforms, so that the abutting portion moves away from the fixing base, thereby realizing communication between the air passage ring groove and the air release channel.

[0015] Preferably, the adjusting valve piece further includes a sealing portion, and the sealing portion is arranged at the lower end of the abutting portion.

[0016] By adopting the technical scheme, the sealing portion is arranged, so as to improve the sealing between the adjusting valve piece and the fixing base, and the stability of isolation between the air passage ring groove and the air release channel is higher.

[0017] Preferably, the silencer further includes an adjusting assembly, the adjusting assembly includes a fixing member and an elastic member, the fixing member is arranged in the mounting groove, and the elastic member is arranged between the fixing member and the adjusting valve piece, so as to drive the adjusting valve piece to abut against the fixing base.

[0018] By adopting the technical scheme, the fixing member and the elastic member are arranged, the adjusting valve piece abuts against the fixing base under the driving of the elastic member, so as to ensure the sealing between the adjusting valve piece and the fixing base.

[0019] Preferably, the adjusting assembly further includes a mounting member, the mounting member is arranged at the upper end of the adjusting valve piece, and the lower end of the elastic member is embedded in the upper end of the mounting member.

[0020] By adopting the technical scheme, the mounting member is arranged, so as to improve the stability of installation of the elastic member, and the stability of driving of the adjusting valve piece by the elastic member against the fixing base is higher.

[0021] Preferably, the mounting member is clamped to the adjusting valve plate.

[0022] By adopting the technical scheme, the mounting member is clamped to the adjusting valve plate, so as to facilitate the installation of the mounting member.

[0023] Preferably, the muffler further comprises sound-absorbing cotton, which is arranged in the mounting groove and located at the lower end of the air vent hole.

[0024] By adopting the technical scheme, the sound-absorbing cotton is arranged to buffer the gas flowing into the air vent hole, so as to reduce the noise in the inflation process.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. When the air pressure supplied by the air pump is too large, the gas in the buffer cavity flows into the air vent ring groove, so as to lift the adjusting valve plate, so that the air vent ring groove is connected with the air vent passage, and the gas in the buffer cavity flows from the air vent passage to the air vent hole, so as to reduce the air pressure of the inflation component, so as to play a role of overpressure protection, so as to avoid damage to the inflation component as much as possible;

[0027] 2. By arranging the fixing member and the elastic member, the adjusting valve plate is abutted against the fixing seat under the driving of the elastic member, so as to ensure the sealing between the adjusting valve plate and the fixing seat;

[0028] 3. By arranging the mounting member, the stability of the installation of the elastic member is improved, so that the stability of the adjusting valve plate driven by the elastic member to abut against the fixing seat is higher. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a cross-sectional structure schematic view of the muffler in the embodiment of the present application;

[0030] Figure 2 is an explosion structure schematic view of the muffler in the embodiment of the present application.

[0031] Fig. 1 is a schematic view of the muffler in the embodiment of the present application. DETAILED DESCRIPTION

[0032] The following will be described in detail in combination with the accompanying drawings. Figures 1-2 The present application will be further described in detail.

[0033] The application discloses a silencer with overpressure protection function.

[0034] With reference to Figure 1 and Figure 2 , the silencer comprises a fixing base 1, an upper cover 2, a lower cover 3 and an adjusting valve plate 4, the upper end of the fixing base 1 is provided with a vent hole 11, a vent ring groove 12 and a vent passage 13, the vent hole 11 is located at one side of the fixing base 1, the vent ring groove 12 is located at the center of the fixing base 1, and the upper end of the vent passage 13 is in communication with the vent ring groove 12. Meanwhile, the lower end of the fixing base 1 is provided with a buffer cavity 14, and the buffer cavity 14 is in communication with the vent hole 11 and the vent ring groove 12.

[0035] The upper cover 2 is fixedly connected to the upper end of the fixing base 1, the upper end of the upper cover 2 is provided with an air outlet hole 21 and a vent hole 22, the air outlet hole 21 is in communication with the vent hole 11, the vent hole 22 is in communication with the vent passage 13, the lower end of the upper cover 2 is provided with a mounting groove 23, and the mounting groove 23 is in communication with the air outlet hole 21 and the vent hole 22.

[0036] The lower cover 3 is fixedly connected to the lower end of the fixing base 1, and the lower cover 3 is provided with openings at both ends, so that the lower end of the lower cover 3 is in communication with the buffer cavity 14. The adjusting valve plate 4 is fixedly connected in the mounting groove 23, and the adjusting valve plate 4 has two through holes (not marked in the figure), one of which is in communication with the vent hole 11 and the air outlet hole 21, and the other is in communication with the vent passage 13 and the vent hole 22. The adjusting valve plate 4 abuts against the fixing base 1 at the vent ring groove 12 through the elasticity of the adjusting valve plate 4, so that the vent ring groove 12 is isolated from the vent passage 13.

[0037] In actual application, the air outlet hole 21 of the upper cover 2 is in communication with a gas charging component (such as an air bag or an air bag, etc.), the lower end of the lower cover 3 is connected with a gas pump, the gas pump discharges air to the buffer cavity 14 through the lower cover 3, and then the air flows through the vent hole 11 and the air outlet hole 21 from the buffer cavity 14, so that the gas charging component is charged, and the noise in the charging process is reduced under the buffering of the buffer cavity 14;

[0038] When the gas pressure supplied by the gas pump is too large, the gas in the buffer cavity 14 flows into the vent ring groove 12, so that the adjusting valve plate 4 is lifted up, the vent ring groove 12 is in communication with the vent passage 13, and the gas in the buffer cavity 14 flows from the vent passage 13 to the vent hole 22, so as to reduce the gas pressure of the gas charging component in the charging process, so as to play a role of overpressure protection, thereby avoiding damage to the gas charging component as much as possible.

[0039] In some embodiments, one end of the air release channel 13 extends to one side of the fixing base 1, and the end of the air release channel 13 is fixedly connected to the sealing member 15 to block the air release channel 13, so that the gas stably flows from the air release channel 13 to the air release hole 22. At the same time, the air release channel 13 is arranged in this way to facilitate the injection molding of the air release channel 13 and reduce the production difficulty of the fixing base 1.

[0040] Referring to Figure 1 In some embodiments, the fixing base 1 protrudes at the buffer cavity 14 to form a plurality of reinforcing ribs 16, the length direction of the reinforcing ribs 16 is vertically arranged and uniformly spaced along the circumference of the buffer cavity 14, so as to avoid the deformation of the fixing base 1 during the injection molding and improve the stability of the injection molding of the fixing base 1.

[0041] Referring to Figure 1 And Figure 2 In some embodiments, the adjusting valve piece 4 includes a mounting portion 41, a deformation portion 42 and an abutting portion 43, the mounting portion 41 is clamped in the mounting groove 23 to achieve the mounting and fixation of the adjusting valve piece 4, the deformation portion 42 is integrally connected between the mounting portion 41 and the abutting portion 43, the cross section of the deformation portion 42 is arranged in an arc shape to facilitate deformation, and the lower end of the abutting portion 43 abuts against the fixing base 1. When the air pressure supplied by the air pump is too large, the deformation portion 42 deforms, so that the abutting portion 43 moves away from the fixing base 1 to achieve the communication between the air passage ring groove 12 and the air release channel 13.

[0042] In some embodiments, the adjusting valve piece 4 further includes a sealing portion 44, the sealing portion 44 is integrally connected to the lower end of the abutting portion 43, i.e. the sealing portion 44 is located between the abutting portion 43 and the fixing base 1, so as to improve the sealing between the adjusting valve piece 4 and the fixing base 1 and make the stability of the air passage ring groove 12 and the air release channel 13 more higher.

[0043] In some embodiments, the muffler further includes an adjusting assembly 5, specifically, the adjusting assembly 5 includes a fixing member 51 and an elastic member 52, the fixing member 51 is fixedly connected to the upper end of the mounting groove 23, the elastic member 52 is a spring, one end of the elastic member 52 elastically abuts against the fixing member 51, and the other end of the elastic member 52 elastically abuts against the abutting portion 43 to drive the abutting portion 43 to abut against the fixing base 1, i.e. the elastic member 52 drives the adjusting valve piece 4 to abut against the fixing base 1 to ensure the sealing between the adjusting valve piece 4 and the fixing base 1. Moreover, under the action of the elastic member 52, the adjusting valve piece 4 can continue to be used even if it is aged, so as to improve the service life of the muffler.

[0044] In some embodiments, the adjusting assembly 5 further includes a mounting member 53, the mounting member 53 is mounted to the upper end of the abutting portion 43, so that the lower end of the elastic member 52 is embedded in the upper end of the mounting member 53 to improve the stability of the mounting of the elastic member 52 and make the stability of the elastic member 52 driving the adjusting valve piece 4 to abut against the fixing base 1 higher.

[0045] In some embodiments, the upper end of the abutting portion 43 is integrally connected with a clamping portion 45, and the mounting member 53 is clamped on the clamping portion 45 to realize the mounting of the mounting member 53, thereby facilitating the mounting and dismounting of the mounting member 53.

[0046] In some embodiments, the muffler further comprises a sound-absorbing cotton 6 fixedly connected in the mounting groove 23 and located at the lower end of the air vent hole 22 to buffer the gas flowing into the air vent hole 22, thereby reducing the noise in the inflation process.

[0047] The implementation principle of the present embodiment is that in actual application, the air outlet hole 21 of the upper cover 2 is connected with an inflation component (such as an air bag or an air chamber, etc.), and the lower end of the lower cover 3 is connected with a gas pump, the gas pump discharges gas through the lower cover 3 into the buffer cavity 14, and then the gas flows from the buffer cavity 14 through the air hole 11 and the air outlet hole 21, thereby realizing the inflation of the inflation component, and under the buffering of the buffer cavity 14, the noise in the inflation process is reduced.

[0048] When the gas pressure supplied by the gas pump is too large, the gas in the buffer cavity 14 flows into the air vent ring groove 12 to lift up the adjusting valve plate 4, so that the air vent ring groove 12 is connected with the air vent passage 13, and the gas in the buffer cavity 14 flows from the air vent passage 13 to the air vent hole 22, so as to reduce the gas pressure for inflating the inflation component, thereby playing a role of overpressure protection, so as to avoid damage to the inflation component as much as possible.

[0049] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A muffler having an overvoltage protection function, characterized by comprising: The muffler comprises a fixing base (1), an upper cover (2), a lower cover (3) and an adjusting valve plate (4); the upper end of the fixing base (1) is provided with a vent hole (11), a vent ring groove (12) and a vent passage (13), the vent ring groove (12) is communicated with the vent passage (13), the lower end of the fixing base (1) is provided with a buffer cavity (14), the vent hole (11) and the vent ring groove (12) are both communicated with the buffer cavity (14); the upper cover (2) is arranged at the upper end of the fixing base (1), the upper end of the upper cover (2) is provided with an air outlet hole (21) and a vent hole (22), the air outlet hole (21) is communicated with the vent hole (11), the vent hole (22) is communicated with the vent passage (13), the lower end of the upper cover (2) is provided with a mounting groove (23), and the air outlet hole (21) and the vent hole (22) are both communicated with the mounting groove (23); the lower cover (3) is arranged at the lower end of the fixing base (1), and the lower end of the lower cover (3) is communicated with the buffer cavity (14); the adjusting valve plate (4) is arranged in the mounting groove (23), and the adjusting valve plate (4) is elastically abutted against the fixing base (1), so that the vent ring groove (12) is insulated from the vent passage (13).

2. The muffler having an overvoltage protection function according to claim 1, wherein One end of the vent passage (13) extends to one side of the fixing base (1) and is provided with a sealing piece (15).

3. The muffler having an overvoltage protection function according to claim 1, wherein The fixing base (1) is provided with a plurality of reinforcing ribs (16) at the buffer cavity (14).

4. The muffler having an overvoltage protection function according to claim 1, wherein The adjusting valve plate (4) comprises a mounting part (41), a deformation part (42) and an abutting part (43), the mounting part (41) is arranged in the mounting groove (23), the deformation part (42) is arranged between the mounting part (41) and the abutting part (43), and the abutting part (43) is abutted against the fixing base (1).

5. The muffler having an overvoltage protection function according to claim 4, wherein The adjusting valve plate (4) further comprises a sealing part (44), and the sealing part (44) is arranged at the lower end of the abutting part (43).

6. The muffler having an overvoltage protection function according to claim 1, wherein The muffler further comprises an adjusting assembly (5), the adjusting assembly (5) comprises a fixing piece (51) and an elastic piece (52), the fixing piece (51) is arranged in the mounting groove (23), and the elastic piece (52) is arranged between the fixing piece (51) and the adjusting valve plate (4) to drive the adjusting valve plate (4) to abut against the fixing base (1).

7. The muffler having an overvoltage protection function according to claim 6, wherein The adjusting assembly (5) further comprises a mounting piece (53), the mounting piece (53) is arranged at the upper end of the adjusting valve plate (4), and the lower end of the elastic piece (52) is embedded in the upper end of the mounting piece (53).

8. The muffler with overvoltage protection function according to claim 7, characterized in that, The mounting piece (53) is clamped to the adjusting valve plate (4).

9. The muffler with overvoltage protection function according to claim 1, characterized in that, The muffler further comprises a sound-absorbing cotton (6), and the sound-absorbing cotton (6) is arranged in the mounting groove (23) and located at the lower end of the vent hole (22).

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