Silencing nozzle and gas diaphragm pump using same

Abstract

The utility model discloses a silencing nozzle and a gas diaphragm pump using the same, the silencing nozzle is sleeved with a gas outlet on the gas diaphragm pump through a mounting part, or the silencing nozzle is connected with one end of a hose through the mounting part, and the other end of the hose is connected with the gas outlet; the motor acts, the linkage eccentric wheel rotates, the eccentric wheel linkage connecting rod reciprocates in the box body, the connecting rod linkage diaphragm piece generates cavity volume change between the box body and the rear pump body, one-time reciprocating motion of the connecting rod generates one-time air suction and air outlet, an air outlet generates air flow energy, and air flow is concentrated at the position of the noise reduction part along the installation part through the air outlet. The air flow opens the first opening or the first hole in the first silencing surface, the air flow opens the second opening or the second hole in the second silencing surface, the air flow continuously flows out, and silencing is achieved. Therefore, the technical problems that installation and use are inconvenient, and noise reduction stability is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of micro gas diaphragm pumps, in particular to a muffler nozzle and a gas diaphragm pump using the same. Background Art

[0002] With the comprehensive development of the home appliance industry, micro gas diaphragm pumps are used in more and more places;

[0003] The gas diaphragm pump extracts air as the medium. During operation, there will be airflow sound at the outlet. However, existing market customers have high requirements for product noise. Therefore, it is necessary to add a silencer structure at the outlet for matching use.

[0004] At present, the micro gas diaphragm pumps on the market are divided into continuous and discontinuous according to the gas outlet method;

[0005] Among them, the non-continuous micro gas diaphragm pump adopts a silencer structure, which is mainly to install a silencer at the outlet. The silencer is generally made of plastic or metal shell with silencer cotton stacked inside. This silencer method has some disadvantages:

[0006] 1. When the weather is cold and the air contains a lot of moisture, the silencer cotton inside the silencer will freeze, causing the silencer to fail and the stability of use to be poor;

[0007] 2. It is troublesome to install silencer cotton in the silencer. The silencer joints need to be sealed with glue to prevent gas from flowing out. If the silencer is not installed properly, the effect will be affected.

[0008] 3. Due to the structure of the muffler, it generally needs to be installed with the pipeline and will not be directly installed at the outlet of the gas diaphragm pump, which makes installation and use inconvenient;

[0009] Therefore, a muffler nozzle and a gas diaphragm pump using the same are needed. Utility Model Content

[0010] In view of the above-mentioned deficiencies existing in the related art, an object is to provide a silencer nozzle and a gas diaphragm pump using the same, so as to solve the technical problems of inconvenient installation and use and poor silencer stability in the related art.

[0011] The technical solution to achieve the purpose is: a muffler nozzle, characterized in that it includes:

[0012] A mounting portion, wherein a middle position of the mounting portion has an inner cavity;

[0013] and a muffler connected to one end of the mounting portion and covering one end of the inner cavity;

[0014] The mounting part and the muffler part are made of elastic material and are integrally injection molded;

[0015] The muffler portion includes: at least one first muffler surface connected to one end of the mounting portion; and a second muffler surface connected to the first muffler surface, or connected to the mounting portion together with the first muffler surface to seal one end of the inner cavity;

[0016] The first sound-absorbing surface and / or the second sound-absorbing surface has an airflow flow sound-absorbing area.

[0017] Furthermore: the cross-sectional area of ​​the airflow silencing area is less than half of the cross-sectional area of ​​the mounting portion.

[0018] Further: the airflow silencing area includes: at least one first opening or a plurality of first holes arranged on the first silencing surface; and / or at least one second opening or a plurality of second holes arranged on the second silencing surface;

[0019] The first opening and the second opening have a first state and a second state;

[0020] In the first state, the first opening and the second opening are in a closed state because the elastic material is soft and not easy to deform;

[0021] In the second state, air flows into the inner cavity, and the first opening and the second opening are opened under the action of the air flow and the elastic material itself, and the closed state is opened by the air flow to the open state, and the air flow flows out.

[0022] Further: the mounting portion includes: a cylindrical side wall, one end of which is connected to the silencer portion, and the middle position has the inner cavity; a conical protrusion connected to the other end of the cylindrical side wall; and two annular protrusions, which are spaced apart on the outer wall of the cylindrical side wall and are arranged between the conical protrusion and the silencer portion.

[0023] Further: the first sound-absorbing surface is a flat surface or a curved surface.

[0024] Further: the second sound-absorbing surface is a flat surface or a curved surface.

[0025] Further: when the first sound-absorbing surface has the first opening, the second sound-absorbing surface has the second hole;

[0026] Or when the first sound-absorbing surface has the first hole, the second sound-absorbing surface has the second opening;

[0027] Alternatively, when the second sound-absorbing surface has the second opening, the first sound-absorbing surface does not have the first hole.

[0028] Further: the first opening or the second opening is a long strip-shaped slit.

[0029] Further: the volume size of the first opening is smaller than the volume size of the first sound-absorbing surface;

[0030] The volume size of the second opening is smaller than the volume size of the second sound-absorbing surface.

[0031] Further: the width of the first opening is greater than or equal to the diameter of the second hole;

[0032] The width of the second opening is greater than or equal to the diameter of the first hole.

[0033] Further: the sum of the cross-sectional areas of the first opening and the second hole, or the sum of the cross-sectional areas of the second opening and the first hole, is less than half of the cross-sectional area of ​​the cylindrical side wall.

[0034] A gas diaphragm pump using a silencer nozzle comprises: a box body having an inner space; a motor connected to the box body; an eccentric wheel arranged in the inner space, connected to the motor, and rotated in conjunction with the motor; a connecting rod arranged in the inner space, one end of which is connected to the eccentric wheel and is rotated in conjunction with the eccentric wheel; a diaphragm arranged in the inner space; a pressure plate arranged in the inner space, connected to the other end of the connecting rod, and pressing the middle position of the diaphragm; a rear pump body connected to the box body, pressing the edge of the diaphragm; a front pump body connected to the rear pump body, and the front pump body has an air outlet; a valve plate connected between the rear pump body and the front pump body; a pump body diaphragm connected between the front pump body and the valve plate; and two cover plates connected to the box body, covering the inner space; and further comprising: the silencer nozzle;

[0035] The muffler nozzle is sleeved with the air outlet through the mounting portion, or connected to one end of a hose through the mounting portion, and the other end of the hose is connected to the air outlet;

[0036] The motor moves, linking the eccentric wheel to rotate, the eccentric wheel links the connecting rod to make reciprocating motion in the housing, the connecting rod links the diaphragm to produce a change in cavity volume between the housing and the rear pump body, each reciprocating motion of the connecting rod produces one air intake and exhaust, the air outlet generates an airflow energy, the airflow flows from the air outlet along the mounting portion, and is concentrated in the inner cavity and the silencer portion, the airflow expands the airflow circulation silencer area, and the airflow flows out continuously.

[0037] The above technical scheme is adopted, which has the following beneficial effects: a silencer nozzle and a gas diaphragm pump using the same. Compared with the related art, the silencer nozzle includes a mounting part and a silencer part; the mounting part and the silencer part are made of elastic material and are integrally injection molded; the silencer nozzle is sleeved with the air outlet on the gas diaphragm pump through the mounting part, or is connected to one end of a hose through the mounting part, and the other end of the hose is connected to the air outlet, so the installation and use are relatively convenient; the airflow generated at the air outlet follows the mounting part, is concentrated at the inner cavity and the silencer part, and the flow rate of the airflow is slowed down. Due to the concentration of the airflow at the silencer part, the amount of airflow at the silencer part gradually increases, the pressure gradually increases, the airflow opens the airflow circulation silencer area, the airflow is slowly and continuously discharged, the flow rate of the airflow is relatively reduced, and the flow will not be interrupted, so the purpose of silencing is achieved, and the silencing stability is relatively good; thereby overcoming the technical problems of inconvenient installation and use and poor silencing stability, and achieving the technical effect of relatively convenient installation and use and relatively good silencing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is one of the structural schematic diagrams of the silencer nozzle;

[0039] Figure 2 for Figure 1 A partial cross-sectional view of

[0040] Figure 3 This is the second structural schematic diagram of the silencer nozzle;

[0041] Figure 4 This is the third structural diagram of the silencer nozzle;

[0042] Figure 5 This is the fourth structural diagram of the silencer nozzle;

[0043] Figure 6 This is the fifth structural diagram of the silencer nozzle;

[0044] Figure 7 This is the sixth structural diagram of the silencer nozzle;

[0045] Figure 8 A waveform diagram of the sum of the cross-sectional areas of the first opening and the second hole, or the sum of the cross-sectional areas of the second opening and the first hole, respectively, and the cross-sectional area of ​​the cylindrical side wall;

[0046] Fig. 9 It is a schematic diagram of the structure in which the silencer nozzle is sleeved on the gas diaphragm pump;

[0047] Fig.10 It is a schematic diagram of the structure in which the silencer nozzle is connected to the gas diaphragm pump through a hose;

[0048] Fig.11 for Fig. 9 Exploded diagram of

[0049] In the figure: 10. mounting portion, 11. inner cavity, 12. cylindrical side wall, 13. conical protrusion, 14. annular protrusion, 20. silencer, 21. first silencer surface, 21-1. first opening, 21-2. first hole, 22. second silencer surface, 22-1. second opening, 22-2. second hole, 100. casing, 101. inner space, 200. motor, 300. eccentric wheel, 400. connecting rod, 500. diaphragm, 600. pressure plate, 700. rear pump body, 800. front pump body, 801. air outlet, 900. valve plate, 1000. pump body partition, 2000. cover plate, 3000. hose. DETAILED DESCRIPTION

[0050] In order to make the content easier to understand, the following is a further detailed description based on specific embodiments and in conjunction with the accompanying drawings;

[0051] A silencer nozzle and a gas diaphragm pump using the same solve the technical problems of inconvenient installation and use and poor silencer stability in the related technology, and achieve the positive effect of relatively convenient installation and use and relatively good silencer stability. The overall idea is as follows:

[0052] One implementation method:

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 , Fig.10 , Fig.11 As shown; a silencer nozzle and a gas diaphragm pump using the same, the silencer nozzle comprising:

[0054] A mounting portion 10, wherein the middle portion of the mounting portion 10 has an inner cavity 11;

[0055] and a muffler 20 connected to one end of the mounting portion 10 and covering one end of the inner cavity 11;

[0056] The mounting portion 10 and the muffler portion 20 are made of elastic material and are integrally injection molded;

[0057] The muffler 20 includes: at least one first muffler surface 21 connected to one end of the mounting portion 10; and a second muffler surface 22 connected to the first muffler surface 21, or connected to the mounting portion 10 together with the first muffler surface 21, sealing one end of the inner cavity 11;

[0058] The first silencing surface 21 and / or the second silencing surface 22 has an airflow silencing area;

[0059] The gas diaphragm pump using the muffler nozzle comprises: a box body 100, the box body 100 has an inner space 101; a motor 200, connected to the box body 100; an eccentric wheel 300, arranged in the inner space 101, connected to the motor 200, and rotated in conjunction with the motor 200; a connecting rod 400, arranged in the inner space 101, one end of which is connected to the eccentric wheel 300, and is rotated in conjunction with the eccentric wheel 300; a diaphragm sheet 500, arranged in the inner space 101; a pressure plate 600, arranged in the inner space 101, and connected to the connecting rod 400. on the other end of the pump body, pressing the middle position of the diaphragm 500; the rear pump body 700, connected to the box body 100, pressing the edge of the diaphragm 500; the front pump body 800, connected to the rear pump body 700, the front pump body 800 has an air outlet 801; the valve plate 900, connected between the rear pump body 700 and the front pump body 800; the pump body partition 1000, connected between the front pump body 800 and the valve plate 900; and two cover plates 2000, connected to the box body 100, covering the inner space 101; also includes: the muffler nozzle;

[0060] The muffler nozzle is sleeved with the air outlet 801 through the mounting portion 10, or connected to one end of the hose 3000 through the mounting portion 10, and the other end of the hose 3000 is connected to the air outlet 801;

[0061] The motor 200 moves, and the eccentric wheel 300 is linked to rotate. The eccentric wheel 300 links the connecting rod 400 to reciprocate in the box body 100. The connecting rod 400 links the diaphragm 500 to generate a change in the cavity volume between the box body 100 and the rear pump body 700. The reciprocating motion of the connecting rod 400 generates an air intake and an air discharge. The air outlet 801 generates an air flow energy. The air flow flows from the air outlet 801 along the mounting part 10 and is concentrated at the muffler part 20. The air flow expands the air flow circulation muffler area, and the air flow flows out continuously, thereby achieving muffler.

[0062] Specifically, during implementation, the silencing nozzle is sleeved with the air outlet 801 on the gas diaphragm pump through the mounting portion 10, or one end of the hose 3000 is connected through the mounting portion 10, and the other end of the hose 3000 is connected to the air outlet 801, which is relatively convenient to install and use; the airflow generated at the air outlet 801 follows the mounting portion 10 and is concentrated at the inner cavity 11 and the silencing portion 20. Since the silencing portion 20 is in the first state, the flow rate of the airflow is slowed down. Since the airflow at the silencing portion 20 is concentrated, the amount of the airflow at the silencing portion 20 gradually increases, the pressure gradually increases, and the airflow expands the airflow circulation silencing area. The silencing portion 20 changes from the first state to the second state, the airflow is slowly and continuously discharged, the flow rate of the airflow is relatively reduced, and the flow will not be interrupted, thereby achieving the purpose of silencing, and the stability of silencing is relatively good;

[0063] Another embodiment:

[0064] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown; in implementation, the mounting portion 10 includes: a cylindrical side wall 12, one end of which is connected to the muffler 20, and the middle position of which has the inner cavity 11; a conical protrusion 13, which is connected to the other end of the cylindrical side wall 12; and two annular protrusions 14, which are arranged on the outer wall of the cylindrical side wall 12 at intervals, and are arranged between the conical protrusion 13 and the muffler 20;

[0065] The cylindrical side wall 12, the conical protrusion 13, the annular protrusion 14 and the muffler 20 are made of elastic material and are integrally injection molded. The elastic material is preferably rubber, which is soft and not easy to deform. It can not only buffer and absorb the energy of the airflow, but also realize that the first opening 21-1 and / or the second opening 22-1 are in the first state (closed state), which is conducive to the concentration of the airflow. The amount of the airflow at the muffler 20 gradually increases, and the pressure gradually increases. When changing from the first state to the second state (open state), the airflow is slowly and continuously discharged, and the flow rate of the airflow is relatively reduced without interruption. At this time, under the joint action of the airflow and the elastic material, the first opening 21-1 and / or the second opening 22-1 continuously changes between the closed state and the open state, thereby stably buffering and absorbing energy and realizing continuous and stable muffler performance;

[0066] The conical protrusion 13 and the annular protrusion 14 are provided to improve the structural strength of the cylindrical side wall 12, and the structural reliability is relatively good;

[0067] Another embodiment:

[0068] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 When implemented, the cross-sectional area of ​​the airflow silencing area is less than half of the cross-sectional area of ​​the mounting portion 10, such as Figure 8 In the middle, the silencing effect is better in the range of 0-1 / 2S;

[0069] The airflow silencing area includes: at least one first opening 21-1 or a plurality of first holes 21-2 arranged on the first silencing surface 21; and / or at least one second opening 22-1 or a plurality of second holes 22-2 arranged on the second silencing surface 22;

[0070] The first opening 21 - 1 and the second opening 22 - 1 have a first state and a second state;

[0071] In the first state, since the elastic material is soft and not easy to deform, the first opening 21-1 and the second opening 22-1 are in a closed state (the closed state is when there is no impact of airflow, due to the characteristics of the elastic material, the openings will basically fit together and be in a state that can block most of the airflow, which is different from the closed state that completely blocks the airflow);

[0072] In the second state, air flows into the inner cavity 11, and the first opening 21-1 and the second opening 22-1 are opened by the air flow and the elastic material thereof, and the closed state is opened by the air flow to the open state, and the air flow flows out;

[0073] When the first hole 21-2 and / or the second hole 22-2 are provided, the second opening 22-1 or the first opening 21-1 can be assisted in exhausting, and have a diversion effect, thereby preventing the second opening 22-1 or the first opening 21-1 from being stretched too wide and damaging the second muffler surface 22 or the first muffler surface 21, and the structural reliability is relatively good;

[0074] The airflow generated at the air outlet 801 follows the mounting portion 10 and is concentrated at the inner cavity 11 and the muffler 20. Since the muffler 20 is in the first state, the velocity of the airflow is slowed down. Since the airflow at the muffler 20 is concentrated, the amount of the airflow at the muffler 20 gradually increases, and the pressure gradually increases. The airflow opens the first opening 21-1 on the first muffler surface 21, and the airflow opens the second opening 22-1 on the second muffler surface 22. The muffler 20 changes from the first state to the second state, and the airflow is discharged slowly and continuously. The velocity of the airflow is relatively reduced, and the flow will not be interrupted, thereby achieving the purpose of muffler. In combination with the first hole 21-2 or the second hole 22-2, small hole muffler is achieved, and the stability of muffler is relatively good.

[0075] Another embodiment:

[0076] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown; during implementation, the first silencing surface 21 is a plane, inclined, and has a half-moon-shaped structure, and the number is two; the second silencing surface 22 is a plane, and after plane projection from top to bottom, it is an approximately rectangular structure, or the second silencing surface 22 is a curved surface, and after plane projection from top to bottom, it is an approximately rectangular structure;

[0077] Here, from top to bottom refers to the direction from the muffler 20 to the mounting portion 10;

[0078] The shapes of the first muffler surface 21 and the second muffler surface 22 are relatively beautiful, and are conducive to setting the first opening 21-1, the first hole 21-2, the second opening 22-1 or the second hole 22-2, which is conducive to concentrating the airflow;

[0079] Another embodiment:

[0080] like Figure 7 As shown; during implementation, the first silencing surface 21 is a curved surface, and after plane projection from top to bottom, it is a circular ring structure; the second silencing surface 22 is a plane, and after plane projection from top to bottom, it is a circular structure;

[0081] Here, from top to bottom refers to the direction from the muffler 20 to the mounting portion 10;

[0082] The shapes of the first muffler surface 21 and the second muffler surface 22 are relatively beautiful, and are conducive to setting the first opening 21-1, the first hole 21-2, the second opening 22-1 or the second hole 22-2, which is conducive to concentrating the airflow;

[0083] Another embodiment:

[0084] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown; in implementation, when the first silencing surface 21 has the first opening 21-1, the second silencing surface 22 has the second hole 22-2; for example: Figure 6 In the embodiment, there are two first openings 21-1 and two rows of second holes 22-2, each row having seven holes;

[0085] When the first sound-absorbing surface 21 has the first hole 21 - 2 , the second sound-absorbing surface 22 has the second opening 22 - 1 ; for example: Figure 1 In the figure, the first holes 21 - 2 are arranged in a row, each row has eleven holes, and the second opening 22 - 1 is arranged in one row; Figure 2 In the figure, the first holes 21-2 are arranged in a row, with six holes in each row, and the second opening 22-1 is arranged in a row; Figure 5 In the figure, the first holes 21-2 are in two rows, five in each row, and the second openings 22-1 are in five rows;

[0086] When the second sound-absorbing surface 22 has the second opening 22 - 1 , the first sound-absorbing surface 21 does not have the first hole 21 - 2 ; for example: Figure 3 and Figure 4 , there is one second opening 22-1;

[0087] The number or position of the first opening 21-1, the first hole 21-2, the second opening 22-1 or the second hole 22-2 is not fixed. According to the technical solution disclosed in the utility model and the selection and change according to the actual working conditions, the ordinary technicians in this field can directly and unambiguously know how to set it after reading the disclosed content, without creative labor or excessive experiments;

[0088] The first opening 21-1 or the second opening 22-1 is a long strip-shaped slit, which is conducive to forming the first state and concentrating the airflow. The amount of airflow at the muffler 20 gradually increases, and the pressure gradually increases. When changing from the first state to the second state, the airflow is discharged slowly and continuously, the flow rate of the airflow is relatively reduced, and the flow will not be interrupted, and the stability of the muffler is relatively good;

[0089] The volume size of the first opening 21-1 is smaller than the volume size of the first muffler surface 21; the volume size of the second opening 22-1 is smaller than the volume size of the second muffler surface 22; the control of the volume size will not affect the airflow, and ensure the structural strength of the first muffler surface 21 and the second muffler surface 22, and the airflow will not damage the first muffler surface 21 or the second muffler surface 22;

[0090] The width of the first opening 21-1 is greater than or equal to the diameter of the second hole 22-2; the width of the second opening 22-1 is greater than or equal to the diameter of the first hole 21-2; the size control enables the first hole 21-2 or the second hole 22-2 to assist the second opening 22-1 or the first opening 21-1 in exhausting air, and has a diversion effect, thereby preventing the second opening 22-1 or the first opening 21-1 from being stretched too wide and damaging the second muffler surface 22 or the first muffler surface 21, and the structural reliability is relatively good;

[0091] The first hole 21-2 or the second hole 22-2 is a small hole, for example, the hole diameter is 0.2mm-1mm, which has the function of diversion, and prevents the second opening 22-1 or the first opening 21-1 from being too wide, causing the airflow to flow faster at the second opening 22-1 or the first opening 21-1, thereby affecting the silencing effect;

[0092] The sum of the cross-sectional areas of the first opening 21-1 and the second hole 22-2, or the sum of the cross-sectional areas of the second opening 22-1 and the first hole 21-2, is less than half of the cross-sectional area of ​​the cylindrical side wall 12; Figure 8 In the middle, the silencing effect is better in the range of 0-1 / 2S;

[0093] Another embodiment:

[0094] like Fig.10 As shown; during implementation, a hose 3000 is provided, the silencing nozzle is connected to one end of the hose 3000 through the mounting portion 10, and the other end of the hose 3000 is connected to the air outlet 801. The hose 3000 is made of elastic material, preferably rubber, which has relatively better absorption of airflow energy and relatively better silencing effect;

[0095] About the structure of gas diaphragm pump:

[0096] See Fig. 9 , Fig.10 , Fig.11The gas diaphragm pump comprises: a box body 100, the box body 100 has an inner space 101; a motor 200, connected to the box body 100; an eccentric wheel 300, arranged in the inner space 101, connected to the motor 200, and rotated in conjunction with the motor 200; a connecting rod 400, arranged in the inner space 101, one end of which is connected to the eccentric wheel 300, and is rotated in conjunction with the eccentric wheel 300; a diaphragm sheet 500, arranged in the inner space 101; a pressure plate 600, arranged in the inner space 101, and connected to the other end of the connecting rod 400 on, pressing the middle position of the diaphragm 500; the rear pump body 700, connected to the box body 100, pressing the edge of the diaphragm 500; the front pump body 800, connected to the rear pump body 700, the front pump body 800 has an air outlet 801; the valve plate 900, connected between the rear pump body 700 and the front pump body 800; the pump body partition 1000, connected between the front pump body 800 and the valve plate 900; and two cover plates 2000, connected to the box body 100, covering the inner space 101; also includes: the muffler nozzle;

[0097] The muffler nozzle is sleeved with the air outlet 801 through the mounting portion 10, or connected to one end of the hose 3000 through the mounting portion 10, and the other end of the hose 3000 is connected to the air outlet 801;

[0098] The motor 200 moves, and the eccentric wheel 300 is linked to rotate. The eccentric wheel 300 links the connecting rod 400 to reciprocate in the box body 100. The connecting rod 400 links the diaphragm 500 to produce a change in cavity volume between the box body 100 and the rear pump body 700. One reciprocating movement of the connecting rod 400 generates one air intake and exhaust. The air outlet 801 generates an airflow energy. The airflow flows from the air outlet 801 along the mounting part 10 and is concentrated at the inner cavity 11 and the muffler part 20. The airflow opens the first opening 21-1 on the first muffler surface 21, and the airflow opens the second opening 22-1 on the second muffler surface 22. The airflow flows out slowly and continuously, and muffler is realized. The first hole 21-2 or the second hole 22-2 is combined to realize small hole muffler, and the stability of muffler is relatively good.

[0099] If the silencer nozzle is not provided, the generated airflow will be directly ejected from the air outlet 801, the airflow velocity is relatively fast, and there is a situation of interruption, which produces a sound similar to "thump thump", and the noise is relatively loud. After the silencer nozzle is added, the velocity of the airflow is slowed down. Since the airflow at the silencer 20 is concentrated, the amount of the airflow at the silencer 20 gradually increases, and the pressure gradually increases. The airflow opens the first opening 21-1 or the first hole 21-2 on the first silencer surface 21, and the airflow opens the second opening 22-1 or the second hole 22-2 on the second silencer surface 22. The airflow is discharged slowly and continuously, and the velocity of the airflow is relatively reduced, and the flow will not be interrupted, so the purpose of silencing is achieved, and the stability of silencing is relatively good.

[0100] The box body 100, the inner space 101, the motor 200, the eccentric wheel 300, the connecting rod 400, the diaphragm 500, the pressing plate 600, the rear pump body 700, the front pump body 800, the air outlet 801, the valve plate 900, the pump body partition 1000 and the cover plate 2000 are common structures in the prior art. The gas diaphragm pump is a common structure in the prior art, which is not the inventive point of the utility model, but is only for better description of the utility model and facilitating understanding of the technical solution of the utility model. After seeing the disclosed content, ordinary technicians in this field can directly and unambiguously know how to set the gas diaphragm pump without creative labor or excessive experiments.

[0101] The working principle is as follows: the silencing nozzle is sleeved with the air outlet 801 on the gas diaphragm pump through the mounting part 10, or one end of the hose 3000 is connected through the mounting part 10, and the other end of the hose 3000 is connected to the air outlet 801, which is relatively convenient to install and use; the airflow generated at the air outlet 801 follows the mounting part 10 and is concentrated at the inner cavity 11 and the silencing part 20. Since the silencing part 20 is in the first state, the flow rate of the airflow is slowed down. Since the airflow at the silencing part 20 is concentrated, the amount of the airflow at the silencing part 20 gradually increases, and the pressure gradually increases. The airflow opens the first opening 21-1 on the first silencing surface 21, and the airflow opens the second opening 22-1 on the second silencing surface 22. The silencing part 20 changes from the first state to the second state, and the airflow is slowly and continuously discharged. The flow rate of the airflow is relatively reduced, and the flow will not be interrupted, thereby achieving the purpose of silencing. In combination with the first hole 21-2 or the second hole 22-2, small-hole silencing is achieved, and the stability of silencing is relatively good.

[0102] In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicating directions or positional relationships are based on the positional relationships described in the drawings and are only for the convenience of description or simplified description, rather than indicating specific directions that must be possessed; the operation process described in the embodiments is not an absolute usage procedure and may be adjusted accordingly in actual use;

[0103] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the relevant field; the words "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not necessarily indicate a quantity limitation, but indicate the existence of at least one, which needs to be determined according to the content of the embodiment;

[0104] The above is only a preferred specific implementation method, but the scope of protection is not limited to it. Any equivalent replacement or change within the technical scope disclosed by technicians familiar with this technical field according to the technical solution and its utility model concept should be covered by the scope of protection.

Claims

1. A muffler nozzle, characterized in that: include: A mounting portion (10), wherein a middle position of the mounting portion (10) comprises an inner cavity (11); and a silencer (20) connected to one end of the mounting portion (10) and covering one end of the inner cavity (11); The mounting portion (10) and the muffler portion (20) are made of elastic material and are integrally injection-molded; The muffler portion (20) comprises: at least one first muffler surface (21) connected to one end of the mounting portion (10); and a second sound-absorbing surface (22), connected to the first sound-absorbing surface (21), or connected to the mounting portion (10) together with the first sound-absorbing surface (21), sealing one end of the inner cavity (11); The first sound-absorbing surface (21) and / or the second sound-absorbing surface (22) are provided with an airflow-circulating sound-absorbing area.

2. A muffler nozzle according to claim 1, characterized in that: The cross-sectional area of ​​the airflow silencing area is smaller than half the cross-sectional area of ​​the mounting portion (10).

3. A muffler nozzle according to claim 1, characterized in that: The airflow silencing area comprises: at least one first opening (21-1) or a plurality of first holes (21-2) arranged on the first silencing surface (21); and / or at least one second opening (22-1) or a plurality of second holes (22-2) arranged on the second silencing surface (22); The first opening (21-1) and the second opening (22-1) have a first state and a second state; In the first state, since the material is elastic and soft and not easy to deform, the first opening (21-1) and the second opening (22-1) are in a closed state; In the second state, air flows into the inner cavity (11), the first opening (21-1) and the second opening (22-1) are stretched open by the air flow and the elastic material thereof, the closed state is stretched open by the air flow to the open state, and the air flow flows out.

4. A muffler nozzle according to claim 3, characterized in that: The mounting portion (10) comprises: a cylindrical side wall (12) having one end connected to the silencer (20) and having the inner cavity (11) in the middle; a conical protrusion (13) connected to the other end of the cylindrical side wall (12); and two annular protrusions (14) arranged at intervals on the outer wall of the cylindrical side wall (12) and between the conical protrusion (13) and the silencer (20).

5. A muffler nozzle according to claim 4, characterized in that: The first sound-absorbing surface (21) is a flat surface or a curved surface.

6. A muffler nozzle according to claim 5, characterized in that: The second sound-absorbing surface (22) is a flat surface or a curved surface.

7. A muffler nozzle according to claim 4, characterized in that: When the first sound-absorbing surface (21) has the first opening (21-1), the second sound-absorbing surface (22) has the second hole (22-2); Or when the first sound-absorbing surface (21) has the first hole (21-2), the second sound-absorbing surface (22) has the second opening (22-1); Alternatively, when the second sound-absorbing surface (22) has the second opening (22-1), the first sound-absorbing surface (21) does not have the first hole (21-2).

8. The muffler nozzle according to claim 3, characterized in that: The first opening (21-1) or the second opening (22-1) is a long strip-shaped slit.

9. A muffler nozzle according to claim 3, characterized in that: The volume size of the first opening (21-1) is smaller than the volume size of the first sound-absorbing surface (21); The volume size of the second opening (22-1) is smaller than the volume size of the second sound-absorbing surface (22).

10. The muffler nozzle according to claim 3, characterized in that: The width of the first opening (21-1) is greater than or equal to the diameter of the second hole (22-2); The width dimension of the second opening (22-1) is greater than or equal to the diameter dimension of the first hole (21-2).

11. A muffler nozzle according to claim 7, characterized in that: The sum of the cross-sectional areas of the first opening (21-1) and the second hole (22-2), or the sum of the cross-sectional areas of the second opening (22-1) and the first hole (21-2), is less than half the cross-sectional area of ​​the cylindrical side wall (12).

12. A gas diaphragm pump using a muffler nozzle, comprising: A box body (100), the box body (100) having an inner space (101); a motor (200) connected to the box body (100); an eccentric wheel (300) arranged in the inner space (101), connected to the motor (200), and rotated in conjunction with the motor (200); a connecting rod (400) arranged in the inner space (101), one end of which is connected to the eccentric wheel (300), and rotated in conjunction with the eccentric wheel (300); and a diaphragm (500) arranged in the inner space (101); A pressure plate (600) is arranged in the inner space (101), connected to the other end of the connecting rod (400), and presses the middle position of the diaphragm (500); a rear pump body (700) is connected to the box body (100) and presses the edge of the diaphragm (500); a front pump body (800) is connected to the rear pump body (700), and the front pump body (800) has an air outlet (801); a valve plate (900) is connected between the rear pump body (700) and the front pump body (800); a pump body partition plate (1000) is connected between the front pump body (800) and the valve plate (900); and two cover plates (2000) are connected to the box body (100) and cover the inner space (101); characterized in that it also includes: The muffler nozzle according to any one of claims 1 to 11; The silencing nozzle is sleeved with the air outlet (801) via the mounting portion (10), or is connected to one end of a hose (3000) via the mounting portion (10), and the other end of the hose (3000) is connected to the air outlet (801); The motor (200) is in motion, thereby causing the eccentric wheel (300) to rotate. The eccentric wheel (300) causes the connecting rod (400) to reciprocate in the housing (100). The connecting rod (400) causes the diaphragm (500) to change the volume of the cavity between the housing (100) and the rear pump body (700). Each reciprocating motion of the connecting rod (400) causes air to be inhaled and exhaled. The air outlet (801) generates air flow energy. The air flow flows from the air outlet (801) along the mounting portion (10) and is concentrated at the inner cavity (11) and the muffler portion (20). The air flow expands the air flow muffler area, and the air flow flows out continuously.

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