A muffler structure for a pneumatic injection valve

Abstract

The application discloses a muffler structure for a pneumatic injection valve, which comprises a muffler body, air holes are installed on both sides of the muffler body, and a protection device is arranged on both sides of the muffler body, the protection device comprises four sliding boxes, the four sliding boxes are arranged in two groups, two sliding boxes are fixedly connected with one side of the muffler body, sliding rods are slidably connected in the two sliding boxes, a fixing ring is fixedly connected with one end of the two sliding rods, a rotating rod is rotatably connected with the surface of the fixing ring, a protection plate is fixedly connected with the arc surface of the rotating rod, and an L-shaped plate is fixedly connected with the arc surface of the fixing ring, the application can protect the air holes, avoids dust, stones and other sundries from entering the muffler body through the air holes when the muffler body is not used, prevents the muffler body from being blocked, and prevents the muffler body from being unable to be normally used.

Description

Technical Field

[0001] This invention relates to the field of pneumatic injection valve silencing technology, specifically a silencer structure for pneumatic injection valves. Background Technology

[0002] In the dispensing equipment industry, pneumatic jet valves are frequently used for dispensing. These valves employ high-frequency solenoid valves to drive the ejector pin, spraying adhesive onto the product surface. However, the high-frequency operation of the solenoid valve causes frequent high-pressure airflow releases into the air, generating significant noise, sometimes reaching 100 decibels. This can severely impact the hearing of equipment operators. While silencers are necessary when using pneumatic jet valves, conventional silencers are not ideal for noise reduction. Therefore, we propose a silencer structure for pneumatic jet valves. Summary of the Invention

[0003] The purpose of this invention is to provide a silencer structure for a pneumatic injection valve to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a silencer structure for a pneumatic injection valve, comprising a silencer body, air holes installed on both sides of the silencer body, and protective devices provided on both sides of the silencer body. The protective devices include four sliding chambers, which are arranged in pairs. Two sliding chambers are fixedly connected to one side of the silencer body. Sliding rods are slidably connected inside each of the two sliding chambers. A fixing ring is fixedly connected to one end of each of the two sliding rods. A rotating rod is rotatably connected to the surface of the fixing ring. A protective plate is fixedly connected to the arc surface of the rotating rod. An L-shaped plate is fixedly connected to the arc surface of the fixing ring. A round rod is slidably inserted into the L-shaped plate. A fixing groove is formed on the arc surface of the protective plate.

[0005] The above-mentioned components achieve the following effect: by setting up protective devices, the air vents can be protected, preventing dust, stones and other debris from entering the muffler body through the air vents when the muffler body is not in use, which could cause blockage and prevent the muffler body from functioning properly, thus improving the practicality of the equipment.

[0006] Preferably, a square rod is fixedly connected to the arc surface of the sliding chamber, and a connecting plate is fixedly connected to the end of the square rod away from the sliding chamber. A plug rod is slidably inserted into the connecting plate, and two slots are opened on the arc surface of the sliding rod. An operating block is fixedly connected to one end of the plug rod.

[0007] The above-mentioned components achieve the following effect: they facilitate the movement of the fixing ring by the operator, allowing the operator to quickly adjust the position of the fixing ring, thereby facilitating the installation of the muffler body onto the surface of the pneumatic injection valve.

[0008] Preferably, the arc surface of the insertion rod is fitted with a spring, and the two ends of the spring are fixedly connected to the operating block and the connecting plate, respectively.

[0009] The above components achieve the following effects: the spring's rebound force automatically inserts the insertion rod, while also restricting the rod's movement to prevent it from sliding out of the sliding rod slot, thus improving the stability of the insertion rod when it is in position.

[0010] Preferably, a limiting plate is slidably connected to the surface of the square rod, and a limiting groove is formed on the side of the limiting plate near the connecting plate.

[0011] The above-mentioned components achieve the following effects: they can fix the plug rod, which not only avoids the situation where the operator needs to hold the operating block with one hand when moving the sliding rod, making it inconvenient for the operator to move the fixing ring, but also prevents the plug rod from colliding with the sliding rod and causing damage to the plug rod.

[0012] Preferably, the arc surface of the rotating rod is fitted with two torsion springs, and the two ends of the torsion springs are respectively fixedly connected to the protective plate and the fixing ring.

[0013] The above components achieve the following effect: the torsion spring's torque enables the protective plate to open automatically, while keeping the protective plate open, thus facilitating the installation of the muffler body onto the surface of the pneumatic injection valve.

[0014] Preferably, the arc surface of the muffler body is provided with an auxiliary device, the auxiliary device including a connecting rod, the connecting rod being fixedly connected to the arc surface of the muffler body, a connecting plate being fixedly connected to the end of the connecting rod away from the muffler body, a sliding groove being formed on the surface of the connecting plate, a sliding block being slidably connected to the surface of the sliding groove of the connecting plate, and a cotton pad being fixedly connected to the surface of the sliding block.

[0015] The aforementioned components achieve the following effect: by setting up auxiliary devices, it is made easier for workers to hold the silencer body, avoiding the situation where workers do not have suitable handholds when installing the silencer body, which would cause inconvenience for workers during installation, and improving the practicality of the equipment.

[0016] Preferably, the surface of the cotton pad is fixedly connected with a plurality of anti-slip protrusions, which are arranged in a straight line.

[0017] The aforementioned components achieve the following effect: they provide a non-slip surface and increase the friction between the palm and the cotton pad.

[0018] Preferably, the surface of the connecting plate has two moving grooves, and the surfaces of the two moving grooves of the connecting plate are slidably connected to limit blocks, and the surface of the sliding blocks has two grooves.

[0019] The above-mentioned components achieve the following effect: they can fix the sliding block, and the operation is simple and convenient, allowing staff to quickly replace the cotton pad.

[0020] Preferably, the inner surface of the muffler body is provided with a silencing device, the silencing device including four first air inlet pipes, the four first air inlet pipes are paired together, and the four first air inlet pipes are all fixedly connected to the inner surface of the muffler body. One end of the first air inlet pipe is connected to an air hole, and the end of the first air inlet pipe away from the air hole is connected to a second air inlet pipe. One end of the second air inlet pipe is connected to a plurality of first shaped pipes, and one end of the second air inlet pipe is connected to a plurality of second shaped pipes. A plurality of fixing blocks are fixedly connected to the inner surface of the muffler body.

[0021] The above-mentioned components achieve the following effects: by setting up a silencing device, the sound of the pneumatic injection valve can be reduced. At the same time, the invention is small in size, does not take up too much space, and is a purely mechanical structure that does not require external energy to achieve the purpose of noise reduction, thus improving the practicality of the equipment.

[0022] Preferably, a plurality of the first irregular tubes are arranged in a straight line, a plurality of the second irregular tubes are arranged in a straight line, and the first irregular tubes are spoon-shaped.

[0023] The effect achieved by the above components is that by arranging multiple parts in a straight line, the airflow can be decelerated by colliding with each other during the flow process, thereby consuming the energy of the airflow and ultimately achieving the purpose of noise reduction. At the same time, the higher the frequency of airflow discharge, the better the noise reduction effect.

[0024] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a protective device, the present invention achieves the effect of protecting the air vents, preventing dust, stones and other debris from entering the muffler body through the air vents when the muffler body is not in use, thus avoiding blockage of the muffler body and preventing it from being used normally, thereby improving the practicality of the equipment.

[0025] 2. By incorporating an auxiliary device, this invention facilitates the handling of the silencer body by workers, preventing situations where workers lack suitable handholds and thus hindering installation, thereby improving the practicality of the equipment.

[0026] 3. By incorporating a silencing device, this invention achieves the effect of reducing the noise of the pneumatic injection valve. Furthermore, this invention is compact, does not occupy excessive space, and is a purely mechanical structure that does not require external energy to achieve noise reduction, thus improving the practicality of the equipment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 In this invention Figure 1 Rear view; Figure 3 This is a schematic diagram of the protective device in this invention; Figure 4 In this invention Figure 3 Enlarged view of point A; Figure 5 This is an isolated view of the protective device in this invention; Figure 6 This is a partial structural schematic diagram of the protective device in this invention; Figure 7 This is a schematic diagram of the auxiliary device in this invention; Figure 8 This is a partial structural schematic diagram of the auxiliary device in this invention; Figure 9 This is a cross-sectional view of the noise reduction device in this invention; Figure 10 This is the airflow guidance diagram in this invention.

[0028] In the diagram: 1. Muffler body; 2. Air vent; 3. Protective device; 4. Auxiliary device; 5. Muffler device; 301. Sliding chamber; 302. Sliding rod; 303. Fixing ring; 304. Rotating rod; 305. Protective plate; 306. L-shaped plate; 307. Round rod; 308. Square rod; 309. Connecting plate; 310. Insert rod; 311. Operating block; 312. Spring; 313. Limiting plate; 314. Torsion spring; 41. Connecting rod; 42. Connecting plate; 43. Sliding block; 44. Cotton pad; 45. Anti-slip protrusion; 46. Limiting block; 51. First air inlet pipe; 52. Second air inlet pipe; 53. First special-shaped pipe; 54. Second special-shaped pipe; 55. Fixing block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-2 This invention provides a technical solution: a silencer structure for a pneumatic injection valve, comprising a silencer body 1, with air holes 2 installed on both sides of the silencer body 1, and protective devices 3 provided on both sides of the silencer body 1. By providing the protective devices 3, the air holes 2 are protected, preventing dust, stones, and other debris from entering the silencer body 1 through the air holes 2 when it is not in use, thus avoiding blockage and malfunction. This improves the practicality of the equipment. The silencer body 1 also has an arc-shaped surface with... The auxiliary device 4 facilitates the handling of the silencer body 1 by the operator, preventing inconvenience caused by the lack of suitable handholds during installation and improving the practicality of the equipment. The inner surface of the silencer body 1 is equipped with a silencing device 5, which reduces the noise of the pneumatic injection valve. Furthermore, the invention is compact, does not occupy much space, and is a purely mechanical structure that does not require external energy to achieve noise reduction, further enhancing its practicality.

[0031] The specific configuration and function of its protective device 3, auxiliary device 4, and silencing device 5 will be explained below.

[0032] like Figure 3 and Figure 4 and Figure 5 as well as Figure 6As shown, the protective device 3 includes four sliding chambers 301, arranged in pairs. Two sliding chambers 301 are fixedly connected to one side of the muffler body 1. Sliding rods 302 are slidably connected within each of the two sliding chambers 301. A fixing ring 303 is fixedly connected to one end of each sliding rod 302. A rotating rod 304 is rotatably connected to the surface of the fixing ring 303. A protective plate 305 is fixedly connected to the arc surface of the rotating rod 304. An L-shaped plate 306 is fixedly connected to the arc surface of the fixing ring 303. A round rod 307 is slidably inserted into the L-shaped plate 306. A fixing groove is formed on the arc surface of the protective plate 305. A square rod 308 is fixedly connected to the arc surface of each sliding chamber 301. A connecting plate 3 is fixedly connected to the end of the square rod 308 away from the sliding chamber 301. 09. A rod 310 is slidably inserted into the connecting plate 309. Two slots are provided on the arc surface of the sliding rod 302. An operating block 311 is fixedly connected to one end of the rod 310. When the operator needs to install the muffler body 1 onto the surface of the pneumatic injection valve, the round rod 307 is pulled. When the round rod 307 is completely disengaged from the surface of the fixing groove of the protective plate 305, the protective plate 305 is rotated to open it. The operating block 311 is moved, which drives the rod 310 to move. When the rod 310 is completely disengaged from the surface of the slot of the sliding rod 302, the fixing ring 303 is moved, which drives the sliding rod 302 to move. When the sliding rod 302 moves to the appropriate position, the rod 310 is pushed to insert it into the sliding rod 302. The surface of the slot is now fully exposed, allowing the operator to install the muffler body 1 onto the pneumatic injection valve surface. This facilitates the movement of the fixing ring 303, enabling the operator to quickly adjust its position. The arc surface of the insert rod 310 is fitted with a spring 312, whose two ends are fixedly connected to the operating block 311 and the connecting plate 309, respectively. When the operator pulls the operating block 311, the spring 312 is stretched, causing the operating block 311 to move the insert rod 310. When the insert rod 310 is completely disengaged from the surface of the sliding rod 302 slot, the operator can adjust the position of the fixing ring 303. When the fixing ring 303 moves to the appropriate position... After reaching the appropriate position, release the operating block 311. The rebound force of the spring 312 drives the operating block 311 to move, which in turn moves the insertion rod 310 until it is inserted into the surface of the sliding rod 302 slot. The rebound force of the spring 312 achieves the effect of automatically inserting the insertion rod 310, while also restricting its movement to prevent it from sliding out of the sliding rod 302 slot, thus improving the stability of the insertion rod 310 during positioning. The surface of the square rod 308 is slidably connected to a limiting plate 313. A limiting groove is provided on the side of the limiting plate 313 near the connecting plate 309. When the operator needs to adjust the position of the fixing ring 303, the operating block 311 is moved to move the insertion rod 310 to the appropriate position, and then the limiting plate 313 is moved.The limiting plate 313 slides on the surface of the square rod 308. After the limiting plate 313 is moved to a suitable position, the insertion rod 310 is parallel to the limiting groove of the limiting plate 313. Pushing the operating block 311 inserts the insertion rod 310 into the surface of the limiting groove of the limiting plate 313, thus fixing the insertion rod 310. At this time, the operator can adjust the position of the fixing ring 303, achieving the effect of fixing the insertion rod 310. This not only avoids the situation where the operator needs to hold the operating block 311 with one hand when moving the sliding rod 302, making it inconvenient for the operator to move the fixing ring 303, but also prevents the insertion rod 310 from colliding with the sliding rod 302, which could damage the insertion rod 310. Two torsion springs 314 are fitted onto the arc surface of the moving rod 304. The two ends of the torsion springs 314 are fixedly connected to the protective plate 305 and the fixing ring 303, respectively. When the operator needs to open the protective plate 305, they pull the round rod 307. When the round rod 307 completely disengages from the surface of the fixing groove of the protective plate 305, the round rod 307 releases its fixation to the protective plate 305. The torque of the torsion springs 314 drives the protective plate 305 to rotate, which in turn drives the rotating rod 304 to rotate until the protective plate 305 is fully opened. The torque of the torsion springs 314 achieves the effect of automatically opening the protective plate 305 while simultaneously keeping it open, thus facilitating the operator's installation of the muffler body 1 onto the surface of the pneumatic injection valve.

[0033] like Figure 7 and Figure 8 As shown, the auxiliary device 4 includes a connecting rod 41, which is fixedly connected to the arc surface of the muffler body 1. A connecting plate 42 is fixedly connected to the end of the connecting rod 41 away from the muffler body 1. A groove is formed on the surface of the connecting plate 42, and a sliding block 43 is slidably connected to the surface of the groove. A cotton pad 44 is fixedly connected to the surface of the sliding block 43, and several anti-slip protrusions 45 are fixedly connected to the surface of the cotton pad 44. These anti-slip protrusions 45 are arranged in a straight line, achieving an anti-slip effect and increasing the friction between the palm and the cotton pad 44. Two moving grooves are formed on the surface of the connecting plate 42, and limit blocks 46 are slidably connected to the surfaces of the two moving grooves. A groove is formed on the surface of the sliding block 43. The device has two grooves. When the worker needs to replace the cotton pad 44, they can move the limiting block 46. When the limiting block 46 is completely disengaged from the surface of the groove of the sliding block 43, the limiting block 46 releases its fixation on the sliding block 43. The cotton pad 44 then moves, causing the sliding block 43 to move. When the sliding block 43 is completely disengaged from the surface of the sliding groove of the connecting plate 42, the worker can replace the cotton pad 44 with a new one. The new cotton pad 44 is placed on the surface of the sliding groove of the connecting plate 42. The limiting block 46 is then moved. When the limiting block 46 moves to the surface of the sliding block 43, it fixes the sliding block 43, thus achieving the effect of fixing the sliding block 43. This operation is simple and convenient, allowing the worker to quickly replace the cotton pad 44.

[0034] like Figure 9 and Figure 10 As shown, the silencer device 5 includes four first air inlet pipes 51, which are arranged in pairs. All four first air inlet pipes 51 are fixedly connected to the inner surface of the silencer body 1. One end of the first air inlet pipe 51 is connected to the air hole 2, and the end of the first air inlet pipe 51 away from the air hole 2 is connected to a second air inlet pipe 52. One end of the second air inlet pipe 52 is connected to several first shaped pipes 53, and one end of the second air inlet pipe 52 is connected to several second shaped pipes 54. Several fixing blocks 55 are fixedly connected to the inner surface of the silencer body 1. Several first shaped pipes 53 are arranged in a straight line, and several second shaped pipes 54 are arranged in a straight line. The first shaped pipes 53 are spoon-shaped. By arranging multiple parts in a straight line, the airflow can be decelerated by colliding with each other during the flow process, thereby consuming the energy of the airflow and ultimately achieving the purpose of noise reduction. At the same time, the higher the frequency of the airflow discharge, the better the noise reduction effect.

[0035] Working principle: When the operator needs to install the muffler body 1 onto the surface of the pneumatic injection valve, pull the round rod 307. When the round rod 307 is completely disengaged from the surface of the fixing groove of the protective plate 305, the round rod 307 releases its fixation to the protective plate 305. The torque of the torsion spring 314 drives the protective plate 305 to rotate, and the protective plate 305 drives the rotating rod 304 to rotate until the protective plate 305 is fully open. Move the operating block 311, and the spring 312 is stretched. The operating block 311 drives the insertion rod 310 to move. When the insertion rod 310 is completely disengaged from the surface of the sliding rod 302 slot, move the limiting plate 313. The limiting plate 313 slides on the surface of the square rod 308. After the limiting plate 313 is moved to the appropriate position, the insertion rod 310 is parallel to the limiting groove of the limiting plate 313. Push the operating block 311 to insert the insertion rod 310 into the surface of the limiting groove of the limiting plate 313. At this time, the limiting plate 313... The insertion rod 310 is fixed. At this time, the operator can adjust the position of the fixing ring 303 and move the fixing ring 303. The fixing ring 303 drives the sliding rod 302 to move. When the sliding rod 302 moves to the appropriate position, the insertion rod 310 is pushed and inserted into the surface of the slot of the sliding rod 302. At this time, the air hole 2 is completely exposed. The operator can install the muffler body 1 onto the surface of the pneumatic injection valve. When the operator does not use the muffler body 1, the muffler body 1 is removed from the surface of the pneumatic injection valve, and the protective plate 305 is covered on the surface of the air hole 2 to protect the air hole. This achieves the effect of protecting the air hole 2, preventing dust, stones and other debris from entering the muffler body 1 through the air hole 2 when the muffler body 1 is not in use, which would cause the muffler body 1 to become blocked and cause the muffler body 1 to malfunction.

[0036] When the operator needs to install the muffler body 1, they can place their palm against the cotton pad 44. At this time, the anti-slip protrusions 45 on the surface of the cotton pad 44 contact the palm, thereby increasing the friction between the palm and the cotton pad 44, making it easier for the operator to install the muffler body 1 onto the surface of the pneumatic injection valve. When the operator needs to replace the cotton pad 44, they can move the limiting block 46. When the limiting block 46 is completely disengaged from the surface of the groove of the sliding block 43, the limiting block 46 releases its fixation on the sliding block 43. Moving the cotton pad 44 causes the sliding block 43 to move. When the sliding block 43 is completely disengaged from the surface of the sliding groove of the connecting plate 42, the operator can replace the cotton pad 44 with a new one. The new cotton pad 44 is placed on the surface of the sliding groove of the connecting plate 42. Moving the limiting block 46 causes it to move to the surface of the sliding block 43, thus fixing the sliding block 43. This achieves the effect of making it easier for the operator to remove the muffler body 1, avoiding the situation where the operator does not have a suitable handhold when installing the muffler body 1, which would otherwise cause inconvenience during installation.

[0037] After the staff has installed the muffler body 1, the airflow from the pneumatic jet valve will enter through the first air inlet pipe 51. When the airflow enters the muffler body 1, it will collide and slow down as it flows through the muffler body 1, thereby consuming the energy of the airflow and ultimately achieving the purpose of noise reduction. At this time, the sound of the pneumatic jet valve can be reduced. In addition, the present invention is small in size, does not take up too much space, and is a purely mechanical structure that does not require external energy to achieve the purpose of noise reduction.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A silencer structure for a pneumatic injection valve, comprising a silencer body (1), characterized in that: Air holes (2) are installed on both sides of the muffler body (1). Protective devices (3) are provided on both sides of the muffler body (1). The protective device (3) includes four sliding chambers (301). The four sliding chambers (301) are arranged in pairs. Two sliding chambers (301) are fixedly connected to one side of the muffler body (1). Sliding rods (302) are slidably connected in both sliding chambers (301). A fixing ring (303) is fixedly connected to one end of the two sliding rods (302). A rotating rod (304) is rotatably connected to the surface of the fixing ring (303). A protective plate (305) is fixedly connected to the arc surface of the rotating rod (304). An L-shaped plate (306) is fixedly connected to the arc surface of the fixing ring (303). A round rod (307) is slidably inserted in the L-shaped plate (306). A fixing groove is opened on the arc surface of the protective plate (305).

2. The silencer structure for a pneumatic injection valve according to claim 1, characterized in that: A square rod (308) is fixedly connected to the arc surface of the sliding chamber (301). A connecting plate (309) is fixedly connected to one end of the square rod (308) away from the sliding chamber (301). A plug rod (310) is slidably inserted into the connecting plate (309). Two slots are opened on the arc surface of the sliding rod (302). An operating block (311) is fixedly connected to one end of the plug rod (310).

3. A silencer structure for a pneumatic injection valve according to claim 2, characterized in that: The arc surface of the insertion rod (310) is fitted with a spring (312), and the two ends of the spring (312) are fixedly connected to the operating block (311) and the connecting plate (309) respectively.

4. A silencer structure for a pneumatic injection valve according to claim 2, characterized in that: The surface of the square rod (308) is slidably connected to a limiting plate (313), and a limiting groove is provided on the side of the limiting plate (313) near the connecting plate (309).

5. A silencer structure for a pneumatic injection valve according to claim 1, characterized in that: The rotating rod (304) has two torsion springs (314) on its arc surface. The two ends of the torsion springs (314) are fixedly connected to the protective plate (305) and the fixing ring (303) respectively.

6. A silencer structure for a pneumatic injection valve according to claim 1, characterized in that: The muffler body (1) has an auxiliary device (4) on its arc surface. The auxiliary device (4) includes a connecting rod (41). The connecting rod (41) is fixedly connected to the arc surface of the muffler body (1). A connecting plate (42) is fixedly connected to one end of the connecting rod (41) away from the muffler body (1). A sliding groove is provided on the surface of the connecting plate (42). A sliding block (43) is slidably connected to the surface of the sliding groove of the connecting plate (42). A cotton pad (44) is fixedly connected to the surface of the sliding block (43).

7. A silencer structure for a pneumatic injection valve according to claim 6, characterized in that: The surface of the cotton pad (44) is fixedly connected with several anti-slip protrusions (45), which are arranged in a straight line.

8. A silencer structure for a pneumatic injection valve according to claim 6, characterized in that: The surface of the connecting plate (42) has two moving grooves, and the surfaces of the two moving grooves of the connecting plate (42) are slidably connected to limit blocks (46), and the surface of the sliding block (43) has two grooves.

9. A silencer structure for a pneumatic injection valve according to claim 1, characterized in that: The inner surface of the muffler body (1) is provided with a silencing device (5). The silencing device (5) includes four first air inlet pipes (51). The four first air inlet pipes (51) are arranged in pairs. The four first air inlet pipes (51) are all fixedly connected to the inner surface of the muffler body (1). One end of the first air inlet pipe (51) is connected to the air hole (2). The end of the first air inlet pipe (51) away from the air hole (2) is connected to a second air inlet pipe (52). One end of the second air inlet pipe (52) is connected to several first shaped pipes (53). One end of the second air inlet pipe (52) is connected to several second shaped pipes (54). Several fixing blocks (55) are fixedly connected to the inner surface of the muffler body (1).

10. A silencer structure for a pneumatic injection valve according to claim 9, characterized in that: Several first-shaped tubes (53) are arranged in a straight line, and several second-shaped tubes (54) are arranged in a straight line. The first-shaped tubes (53) are spoon-shaped.

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