Three-position pneumatic actuator with adjustable double protection device

Abstract

This utility model relates to the field of pneumatic actuator technology and discloses a three-position adjustable double protection device for pneumatic actuators, including: a pneumatic actuator; and an operating component disposed on the outer wall of the pneumatic actuator. This three-position adjustable double protection device for pneumatic actuators secures a docking plate and a protective shell to the outer wall of the pneumatic actuator, thereby preventing collisions and friction from external objects and reducing the erosion of the actuator by external environmental factors (such as dust and moisture), enhancing its corrosion resistance. By rotating the gear ring and engaging with the gear, the gear drives the shaft to rotate, which in turn drives the abutment rod to rotate. This abutment rod pushes the sealing plate to move and engage in the mounting groove, thus sealing the gap between the docking plate and the protective shell. This effectively prevents external liquids, gases, dust, and other impurities from entering the protective shell, providing a good sealing environment for the pneumatic actuator.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic actuator technology, specifically to an adjustable double protection device for a three-position pneumatic actuator. Background Technology

[0002] A pneumatic actuator is an actuator that uses air pressure to open, close, or regulate a valve. It is also called a pneumatic actuator mechanism or pneumatic device, and is commonly referred to as a pneumatic head.

[0003] According to the three-position pneumatic actuator adjustable double protection device disclosed in Chinese patent CN218125160U, it includes two protective shells, with the pneumatic actuator body located between the two protective shells. Protective mechanisms are symmetrically arranged on the bottom of the pneumatic actuator body near the left and right sides. Each protective mechanism includes a U-shaped mounting base and a shell. A slider is slidably connected to the inner wall of the shell, and a sealing post is fixedly connected to the top of the slider by bolts. The top of the sealing post passes through the top of the shell and the bottom of the sliding plate, and engages with the inner wall of the corresponding vent. This three-position pneumatic actuator adjustable double protection device protects the pneumatic actuator body by using protective shells, sealing grooves, and sealing rings to prevent corrosion. The protective mechanisms also seal the A and B nozzles on the pneumatic actuator body to prevent internal corrosion, thus extending the service life of the pneumatic actuator body.

[0004] The aforementioned device relies solely on the interlocking fit between the sealing ring and the sealing groove for sealing, which may pose a risk of incomplete sealing, especially under conditions of vibration or pressure fluctuations, or in environments with high temperature, high pressure, or strong chemical corrosion. This can lead to aging, deformation, or damage of the sealing ring, reducing its sealing performance. Therefore, we provide a three-position pneumatic actuator with adjustable double protection. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable double protection device for a three-position pneumatic actuator to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a three-position pneumatic actuator adjustable double protection device, comprising: a pneumatic actuator;

[0007] The operating component is disposed on the outer wall of the pneumatic actuator; the operating component includes a protective part that is snapped onto the outer wall of the pneumatic actuator, the protective part being connected to a positioning part, and the protective part being connected to a sealing part.

[0008] Preferably, the protective part includes a protective shell that snaps onto the outer wall of the pneumatic actuator. The protective shell has a mounting groove on its right side. A sealing plate is snapped onto the inner surface of the mounting groove. A mounting spring is fixedly connected to the side of the sealing plate away from the mounting groove. A mating plate is slidably connected to the outer surface of the sealing plate. The inner surface of the mating plate is snapped onto the middle outer wall of the pneumatic actuator. A shaft is rotatably connected to the top of the mating plate through a bearing. A stop rod is fixedly connected to the outer wall of the inner end of the shaft. A gear is fixedly connected to the outer wall of the outer end of the shaft. A gear ring meshes with the right side of the gear.

[0009] Preferably, the positioning part includes a positioning groove formed on the inner surface of the toothed ring, a positioning block is engaged on the inner surface of the positioning groove, a sleeve block is fixedly connected to the front of the outer end of the positioning block, an elastic sheet is fixedly connected to the inner surface of the sleeve block, a fixing rod is fixedly connected to one end of the elastic sheet away from the inner surface of the sleeve block, and the other end of the fixing rod is fixedly connected to the back of the protective shell.

[0010] Preferably, the sealing part includes an L-shaped frame fixedly connected to the bottom of the protective shell. The vertical end of the L-shaped frame has a movable groove. A limit rod is fixedly connected to the inner surface of the movable groove. A movable rod is sleeved on the outer wall of the limit rod. A sealing plug is fixedly connected to the top left end of the movable rod. The top end of the sealing plug penetrates the inner surface of the through hole at the bottom of the protective shell. A stabilizing rod penetrates the bottom of the movable rod. A fixing spring is fixedly connected to the bottom of the movable rod. The bottom end of the fixing spring is fixedly connected to the top of the horizontal end of the L-shaped frame.

[0011] Preferably, the number of sealing plates is set to two, and the corresponding surfaces of the two sealing plates are fixedly connected by a mounting spring. The two sealing plates are respectively snapped into the inner surface of the mounting groove on both sides. The two sealing plates can form a seal on both sides of the protective shell at the same time, and the mounting spring can keep the sealing plates under a certain elastic pressure to maintain a good sealing state.

[0012] Preferably, the end of the abutment rod away from the shaft rod is in contact with one side of the sealing plate. By rotating the shaft rod, the abutment rod can push the sealing plate to move, so that the sealing plate is engaged in the mounting groove, thereby ensuring the sealing performance of the protective shell.

[0013] Preferably, the inner surface of the sleeve block and the outer surface of the fixing rod are configured to engage, so that after the toothed ring rotates to the appropriate position, the engagement between the sleeve block and the fixing rod stably positions the toothed ring at that position, preventing accidental rotation of the toothed ring during operation and ensuring the stability of the adjustment state of the protective part.

[0014] Preferably, the right end of the movable rod is slidably sleeved with the outer wall of the limiting rod, and the bottom of the movable rod is movably through the top of the stabilizing rod. This guides the movement of the movable rod, ensuring that it moves linearly in the horizontal direction. This ensures that the sealing plug can be accurately inserted into or removed from the through hole at the bottom of the protective shell, achieving a good sealing effect.

[0015] Compared with the prior art, this utility model provides an adjustable double protection device for a three-position pneumatic actuator, which has the following beneficial effects:

[0016] 1. This three-position pneumatic actuator adjustable double protection device first places the docking plate on the middle outer wall of the pneumatic actuator, and then the two protective shells are respectively snapped onto the two outer walls of the pneumatic actuator. This can block the collision and friction of external objects and reduce the corrosion of the actuator by external environmental factors (such as dust, moisture, etc.), thus enhancing its corrosion resistance. At this time, by rotating the gear ring and meshing with the gear, the gear drives the shaft to rotate, and the shaft drives the push rod to rotate, so that the push rod pushes the sealing plate to move and snap into the mounting groove, thereby sealing the gap between the docking plate and the protective shell. This effectively prevents external liquids, gases, dust and other impurities from entering the interior of the protective shell, providing a good sealing environment for the pneumatic actuator. The elastic force of the installed spring facilitates the reset of the sealing plate when the push rod is reset, thus facilitating disassembly.

[0017] 2. The adjustable double protection device of this three-position pneumatic actuator, when the gear ring rotates to the appropriate position, uses the elasticity of the elastic plate to drive the sleeve block to move on the outer wall of the fixed rod. At the same time, the sleeve block drives the positioning block to move and engage in the positioning groove, so as to stably position the gear ring in this position, prevent the gear ring from rotating accidentally during operation, ensure the stability of the state, and ensure the reliability of the sealing effect. At the same time, the setting of the elastic plate can also provide a certain buffer and pre-tightening force, making the positioning more secure.

[0018] 3. The adjustable double protection device of this three-position pneumatic actuator allows the movable rod to slide on the limit rod when the pneumatic actuator stops running, thereby moving the sealing plug and engaging it in the through hole. The fixed spring provides elasticity, making the sealing plug tightly fit the through hole, thus preventing impurities from entering the pneumatic actuator through the air inlet. It effectively prevents external liquids, dust, etc. from entering the protective shell from the bottom, protecting the actuator. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the operating component structure of this utility model;

[0021] Figure 3This is a schematic diagram of the protective part structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the protective part structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the positioning part of this utility model;

[0024] Figure 6 This utility model Figure 5 A magnified structural diagram of A in the middle;

[0025] Figure 7 This is a schematic diagram of the sealing part structure of this utility model.

[0026] In the diagram: Pneumatic actuator 1, operating component 2, protective part 21, protective housing 211, mounting groove 212, sealing plate 213, mounting spring 214, docking plate 215, shaft 216, stop rod 217, gear 218, gear ring 219, positioning part 22, positioning groove 221, positioning block 222, sleeve block 223, elastic sheet 224, fixing rod 225, sealing part 23, L-shaped frame 231, movable groove 232, limit rod 233, movable rod 234, sealing plug 235, through hole 236, stabilizing rod 237, fixing spring 238. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Example 1: The three-position pneumatic actuator adjustable double protection device provided by this utility model, such as... Figures 1 to 7 As shown: A three-position pneumatic actuator adjustable double protection device, including: pneumatic actuator 1;

[0030] And an operating component 2 disposed on the outer wall of the pneumatic actuator 1; the operating component 2 includes a protective part 21 that is snapped onto the outer wall of the pneumatic actuator 1, the protective part 21 being connected to a positioning part 22 and a sealing part 23.

[0031] The protective part 21 includes a protective housing 211 that is snapped onto the outer wall of the pneumatic actuator 1. A mounting groove 212 is provided on the right side of the protective housing 211. A sealing plate 213 is snapped onto the inner surface of the mounting groove 212. A mounting spring 214 is fixedly connected to the side of the sealing plate 213 away from the mounting groove 212. A mating plate 215 is slidably connected to the outer surface of the sealing plate 213. The inner surface of the mating plate 215 is snapped onto the middle outer wall of the pneumatic actuator 1. A shaft 216 is rotatably connected to the top of the mating plate 215 through a bearing. A stop rod 217 is fixedly connected to the outer wall of the inner end of the shaft 216. A gear 218 is fixedly connected to the outer wall of the outer end of the shaft 216. A gear ring 219 meshes with the right side of the gear 218.

[0032] In this embodiment, the number of sealing plates 213 is set to two. The corresponding surfaces of the two sealing plates 213 are fixedly connected by the mounting spring 214. The two sealing plates 213 are respectively snapped into the inner surface of the mounting grooves 212 on both sides. The two sealing plates 213 can form a seal on both sides of the protective shell 211 at the same time. The mounting spring 214 can keep the sealing plates 213 under a certain elastic pressure at all times, thus maintaining a good sealing state.

[0033] Furthermore, the end of the abutment 217 away from the shaft 216 is abutted against one side of the sealing plate 213. By rotating the shaft 216, the abutment 217 can push the sealing plate 213 to move, so that the sealing plate 213 is engaged in the mounting groove 212, thereby ensuring the sealing performance of the protective shell 211.

[0034] Example 2: Based on Example 1, the three-position pneumatic actuator adjustable double protection device provided by this utility model, such as... Figures 1 to 7 As shown: The positioning part 22 includes a positioning groove 221 formed on the inner surface of the toothed ring 219. A positioning block 222 is engaged on the inner surface of the positioning groove 221. A sleeve block 223 is fixedly connected to the front of the outer end of the positioning block 222. An elastic sheet 224 is fixedly connected to the inner surface of the sleeve block 223. A fixing rod 225 is fixedly connected to one end of the elastic sheet 224 away from the inner surface of the sleeve block 223. The other end of the fixing rod 225 is fixedly connected to the back of the protective shell 211.

[0035] In this embodiment, the inner surface of the sleeve 223 and the outer surface of the fixing rod 225 are configured to engage, so that after the toothed ring 219 rotates to the appropriate position, the engaging action between the sleeve 223 and the fixing rod 225 will stably position the toothed ring 219 at that position, preventing the toothed ring 219 from rotating unexpectedly during operation.

[0036] Example 3: Based on Example 1, the three-position pneumatic actuator adjustable double protection device provided by this utility model, such as... Figures 1 to 7 As shown: The sealing part 23 includes an L-shaped frame 231 fixedly connected to the bottom of the protective shell 211. The vertical end of the L-shaped frame 231 has a movable groove 232. The inner surface of the movable groove 232 is fixedly connected to a limiting rod 233. The outer wall of the limiting rod 233 is fitted with a movable rod 234. The top left end of the movable rod 234 is fixedly connected to a sealing plug 235. The top end of the sealing plug 235 passes through the inner surface of the through hole 236 at the bottom of the protective shell 211. The bottom of the movable rod 234 has a stabilizing rod 237 passing through it. The bottom of the movable rod 234 is fixedly connected to a fixing spring 238. The bottom end of the fixing spring 238 is fixedly connected to the top horizontal end of the L-shaped frame 231.

[0037] In this embodiment, the right end of the movable rod 234 is slidably sleeved with the outer wall of the limiting rod 233, and the bottom of the movable rod 234 is movably through the top of the stabilizing rod 237. This guides the movement of the movable rod 234, ensuring that the movable rod 234 moves linearly in the horizontal direction. This ensures that the sealing plug 235 can be accurately inserted into or pulled out of the through hole 236 at the bottom of the protective shell 211, achieving a good sealing effect.

[0038] Furthermore, the position of the through hole 236 corresponds to the position of the air inlet of the pneumatic actuator 1. When the sealing plug 235 is engaged in the through hole 236, it can prevent impurities from entering the interior of the pneumatic actuator 1 through the air inlet.

[0039] In actual operation, when this device is used, the docking plate 215 is first fitted onto the middle outer wall of the pneumatic actuator 1, and then the protective shells 211 on both sides are respectively snapped onto the outer walls of the pneumatic actuator 1. This can block the collision and friction of external objects and reduce the corrosion of the pneumatic actuator 1 by external environmental factors (such as dust, moisture, etc.), thereby enhancing its corrosion resistance. At this time, by rotating the gear ring 219 and meshing with the gear 218, the gear 218 drives the shaft 216 to rotate, and the shaft 216 drives the abutment rod 217 to rotate, so that the abutment rod 217 pushes the sealing plate 213 to move and snap into the mounting groove 212, thereby sealing the gap between the docking plate 215 and the protective shell 211, thereby effectively preventing external liquids, gases, dust and other impurities from entering the interior of the protective shell 211, providing a good sealing environment for the pneumatic actuator 1, and using the elastic force of the mounting spring 214, the sealing plate 213 is easily reset when the abutment rod 217 is reset and rotated, thus facilitating disassembly.

[0040] When the toothed ring 219 rotates to the appropriate position, the elasticity of the elastic plate 224 drives the sleeve block 223 to move on the outer wall of the fixed rod 225. At the same time, the sleeve block 223 drives the positioning block 222 to move and engage in the positioning groove 212, thus stably positioning the toothed ring 219 in this position. This prevents the toothed ring 219 from rotating unexpectedly during operation, ensuring a stable state and guaranteeing the reliability of the sealing effect. In addition, the elastic plate 224 can also provide a certain amount of buffering and pre-tightening force, making the positioning more secure.

[0041] When the pneumatic actuator 1 stops running, the movable rod 234 can slide on the limit rod 233, which will drive the sealing plug 235 to move and engage in the through hole 236. The fixed spring 238 provides elastic force to make the sealing plug 235 fit tightly against the through hole 236, thereby preventing impurities from entering the pneumatic actuator 1 through the air inlet and effectively preventing external liquids, dust and other substances from entering the protective shell 211 from the bottom, thereby protecting the pneumatic actuator 1.

[0042] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A three-position pneumatic actuator with adjustable double protection device, including: Pneumatic actuator (1); The operating component (2) is disposed on the outer wall of the pneumatic actuator (1); characterized in that: the operating component (2) includes a protective part (21) snapped onto the outer wall of the pneumatic actuator (1), the protective part (21) is connected to a positioning part (22), and the protective part (21) is connected to a sealing part (23).

2. The three-position pneumatic actuator adjustable double protection device according to claim 1, characterized in that: The protective part (21) includes a protective shell (211) that is snapped onto the outer wall of the pneumatic actuator (1). The protective shell (211) has an installation groove (212) on its right side. A sealing plate (213) is snapped onto the inner surface of the installation groove (212). A mounting spring (214) is fixedly connected to the side of the sealing plate (213) away from the installation groove (212). A docking plate (215) is slidably connected to the outer surface of the sealing plate (213). The inner surface of the docking plate (215) is snapped onto the middle outer wall of the pneumatic actuator (1). A shaft (216) is rotatably connected to the top of the docking plate (215) through a bearing. A stop rod (217) is fixedly connected to the outer wall of the inner end of the shaft (216). A gear (218) is fixedly connected to the outer wall of the outer end of the shaft (216). A gear ring (219) meshes with the right side of the gear (218).

3. The three-position pneumatic actuator adjustable double protection device according to claim 1, characterized in that: The positioning part (22) includes a positioning groove (221) formed on the inner surface of the toothed ring (219). A positioning block (222) is engaged on the inner surface of the positioning groove (221). A sleeve block (223) is fixedly connected to the front of the outer end of the positioning block (222). An elastic sheet (224) is fixedly connected to the inner surface of the sleeve block (223). A fixing rod (225) is fixedly connected to one end of the elastic sheet (224) away from the inner surface of the sleeve block (223). The other end of the fixing rod (225) is fixedly connected to the back of the protective shell (211).

4. The three-position pneumatic actuator adjustable double protection device according to claim 1, characterized in that: The sealing part (23) includes an L-shaped frame (231) fixedly connected to the bottom of the protective shell (211). The vertical end of the L-shaped frame (231) has a movable groove (232). The inner surface of the movable groove (232) is fixedly connected to a limiting rod (233). The outer wall of the limiting rod (233) is fitted with a movable rod (234). The top left end of the movable rod (234) is fixedly connected to a sealing plug (235). The top end of the sealing plug (235) passes through the inner surface of the through hole (236) at the bottom of the protective shell (211). The bottom of the movable rod (234) has a stabilizing rod (237). The bottom of the movable rod (234) is fixedly connected to a fixing spring (238). The bottom end of the fixing spring (238) is fixedly connected to the top of the horizontal end of the L-shaped frame (231).

5. The three-position pneumatic actuator adjustable double protection device according to claim 2, characterized in that: The number of sealing plates (213) is set to two. The corresponding surfaces of the two sealing plates (213) are fixedly connected by a mounting spring (214). The two sealing plates (213) are respectively snapped into the inner surface of the mounting grooves (212) on both sides.

6. The three-position pneumatic actuator adjustable double protection device according to claim 2, characterized in that: The end of the abutment (217) away from the shaft (216) is abutted against one side of the sealing plate (213).

7. The three-position pneumatic actuator adjustable double protection device according to claim 3, characterized in that: The inner surface of the sleeve (223) and the outer surface of the fixing rod (225) are configured to be snap-fitted together.

8. The three-position pneumatic actuator adjustable double protection device according to claim 4, characterized in that: The right end of the movable rod (234) is slidably sleeved with the outer wall of the limiting rod (233), and the bottom of the movable rod (234) is slidably through the top of the stabilizing rod (237).

Images