CN209725394U - A kind of pneumatic actuator for preventing running part from freezing - Google Patents

Abstract

The utility model discloses a kind of pneumatic actuators for preventing running part from freezing, including shell, sleeve is provided in shell, one end of sleeve and valve link, sleeve is communicated far from one end of valve with external air source, external air source is connected by sleeve with air motor, and air motor is controlled driving by external air source；It is provided on air motor to feed channel and exhaust pipe, is provided with piston apparatus in air motor, piston apparatus includes piston, piston rod is connected on piston, piston rod is fixedly connected with rotating handle, and rotating handle is fixedly connected in shaft；Piston is fixedly connected with stretch rod far from one end of piston rod, and stretch rod and connecting rod are rotatablely connected, and rotating bar is rotatably connected to sliding block far from one end of stretch rod；Piston is arranged in piston wall.Mutually friction generates heat for sliding block and channel, prevents running part from freezing, being failure to actuate；Air motor bottom end is provided with spring, and reducing influences due to shaking when air motor work to entire actuator bring.

Description

A kind of pneumatic actuator for preventing running part from freezing

Technical field

The utility model relates to valve regulated technical field more particularly to a kind of pneumatic execution for preventing running part from freezing Device.

Background technique

Pneumatic actuator is the executive device with the opening and closing of air pressure power drive or control valve, but by title pneumatic actuator or Pneumatic device, pneumatic actuator are good to gas medium and small diameter tube effect liquid, at low cost, easy to maintain；Pneumatic actuator is dynamic It is big to make torque ratio electrically operated valve, pneumatic actuator door switch movement speed is adjustable, and structure is simple, easy to maintain, action process The middle damping characteristics because of gas itself, are not easy to damage because blocking, but must have gas source, and its control system is also more multiple than motor-driven valve It is miscellaneous；But pneumatic actuator in north of china in winter vulnerable to the aqueous influence of compressed air, cause running part to freeze, be failure to actuate, it is this existing As making pneumatic actuator seem extremely inconvenient in cold northern use, so urgent need is researched and developed and a kind of prevents running part from freezing Pneumatic actuator.

Utility model content

Purpose of the utility model is to solve pneumatic actuators in traditional technology to contain in north of china in winter vulnerable to compressed air The problem of water influences, and running part is caused to freeze, be failure to actuate, and a kind of pneumatic execution for preventing running part from freezing proposed Device.

To achieve the goals above, the utility model adopts the technical scheme that

A kind of pneumatic actuator for preventing running part from freezing, including shell are provided with sleeve, the set in the shell One end of cylinder and valve link, and the sleeve is communicated far from one end of the valve with external air source, and the external air source passes through The sleeve connects with air motor, and the air motor is controlled driving by external air source；Be provided on the air motor to Feed channel and exhaust pipe are provided with piston apparatus in the air motor, and the piston apparatus includes piston, on the piston It is connected with piston rod, the piston rod is fixedly connected with rotating handle, and the rotating handle is fixedly connected in shaft；Institute It states piston and is fixedly connected with stretch rod far from one end of the piston rod, the stretch rod and connecting rod are rotatablely connected, and described turn Lever is rotatably connected to sliding block far from one end of the stretch rod；The piston is arranged in the piston wall.

Preferably, described on the air motor communicates to feed channel with the external air source, on the air motor Exhaust pipe be used cooperatively by the sleeve and the valve, the air motor be piston type pneumatic motor.

Preferably, the bottom surface of the air motor is fixedly connected at least one spring, and the spring is far from described pneumatic One end of motor is fixedly connected on the shell, effectively reduces the vibration of the air motor to entire pneumatic actuator band The influence come.

Preferably, the stretch rod being fixedly connected on the piston passes through the piston wall, the stretching rod outer surface setting Gluing has rubber layer, and the rubber layer and the piston wall are in close contact, it is ensured that leakproofness.

Preferably, the sliding block uses metal material, the sliding block end face and channel contact, and the channel inside and outside wall is gold Belong to material, mutually friction generates heat for the sliding block and the channel outer wall of metal material.

Preferably, the valve connects with the channel, and the sliding block is provided with fixed block far from the end face in the channel, The sliding block can slide between the fixed block and the channel, and the fixed block is fixedly connected with the piston wall.

Compared with prior art, the utility model has following advantages:

Stretch rod is fixedly connected on piston in air motor, stretch rod is rotatably connected to connection far from one end of piston Bar, connecting rod are rotatably connected to sliding block far from one end of stretch rod, and in air motor work, piston carries out piston motion, warp The cooperation for crossing above-mentioned connection type pulls sliding block to slide between the outer wall and fixed block in channel, since sliding block and channel all use Metal material, mutually friction generates heat, gives translator unit heat, prevents running part from freezing, being failure to actuate；Air motor bottom End is provided with spring, and reducing influences due to shaking when air motor work to entire actuator bring.

Detailed description of the invention

Fig. 1 be the utility model proposes a kind of pneumatic actuator for preventing running part from freezing structural schematic diagram；

Fig. 2 is the structure enlargement diagram of the part a in the utility model.

In figure: 1 shell, 2 sleeves, 3 valves, 4 external air sources, 5 air motors, 6 to feed channel, 7 exhaust pipes, 8 pistons, 9 piston rods, 10 rotating handles, 11 stretch rods, 12 connecting rods, 13 springs, 14 piston walls, 15 channels, 16 fixed blocks, 17 shafts, 18 sliding blocks.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.

Referring to figs. 1 to Fig. 2, a kind of pneumatic actuator for preventing running part from freezing, including shell 1 is provided in shell 1 Sleeve 2, one end of sleeve 2 and valve 3 link, and the one end of sleeve 2 far from valve 3 is communicated with external air source 4, and external air source 4 is logical It crosses sleeve 2 to connect with air motor 5, air motor 5 is controlled by external air source 4 and driven；It is provided on air motor 5 to feed channel 6 and exhaust pipe 7, piston apparatus is provided in air motor 5, and piston apparatus includes piston 8, is connected with work on piston 8 Stopper rod 9, piston rod 9 are fixedly connected with rotating handle 10, and rotating handle 10 is fixedly connected in shaft 17；Piston 8 is far from piston One end of bar 9 is fixedly connected with stretch rod 11, and stretch rod 11 and connecting rod 12 are rotatablely connected, and connecting rod 12 is far from stretch rod 11 One end is rotatably connected to sliding block 18；Piston 8 is arranged in piston wall 14.

Communicating to feed channel 6 with external air source 4 on air motor 5, the exhaust pipe 7 on air motor 5 pass through sleeve 2 It is used cooperatively with valve, air motor 5 is piston type pneumatic motor；The bottom surface of air motor 5 is fixedly connected at least one bullet Spring 13, spring 13 are fixedly connected on shell 1 far from one end of air motor 5；The stretch rod 11 being fixedly connected on piston 8 is worn Piston wall 14 is crossed, 11 outer surface of stretch rod setting gluing has rubber layer；Sliding block 18 uses metal material, 18 end face of sliding block and channel 15 contacts, 15 inside and outside wall of channel are metal material；Valve 3 connects with channel 15, and sliding block 18 is provided with far from the end face in channel 15 Fixed block 16, sliding block 18 can slide between fixed block 16 and channel 15, and fixed block 16 is fixedly connected with piston wall 14.

Now the operating principle of the utility model is done described below:

When the utility model is used, stretch rod is fixedly connected on the piston 8 in the air motor 5 in pneumatic actuator 11, stretch rod 11 is rotatably connected to connecting rod 12 far from one end of piston, and connecting rod 12 is rotated far from one end of stretch rod 11 to be connected It is connected to sliding block 18, when air motor 5 works, piston 8 carries out piston motion, and the cooperation by above-mentioned connection type, which pulls, to be slided Block 18 slides between the outer wall and fixed block 16 in channel 15, since sliding block 18 and channel 15 all use metal material, mutually Friction generates heat, gives valve 3 and 15 contact site heat of channel, prevents running part from freezing, being failure to actuate；Air motor 5 Bottom end is provided with spring 13, and reducing influences due to shaking when air motor 5 works to entire pneumatic actuator bring.

In the present invention unless specifically defined or limited otherwise, term " sliding ", " fixation ", " is set " rotation " Have " etc. terms shall be understood in a broad sense, for example, it may be being welded to connect, be also possible to be bolted, or integral；It can be machine Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary The interaction relationship of connection or two elements inside part, unless otherwise restricted clearly.For the ordinary skill of this field For personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.

The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (6)

1. a kind of pneumatic actuator for preventing running part from freezing, including shell (1), which is characterized in that set in the shell (1) Be equipped with sleeve (2), one end of the sleeve (2) and valve (3) are linked, the one end of the sleeve (2) far from the valve (3) with External air source (4) communicates, and the external air source (4) is connected by the sleeve (2) with air motor (5), the air motor (5) it is controlled and is driven by external air source (4)；It is provided on the air motor (5) to feed channel (6) and exhaust pipe (7), it is described It is provided with piston apparatus in air motor (5), the piston apparatus includes piston (8), is connected with work on the piston (8) Stopper rod (9), the piston rod (9) are fixedly connected with rotating handle (10), and the rotating handle (10) is fixedly connected on shaft (17) on；The piston (8) is fixedly connected with stretch rod (11) far from the one end of the piston rod (9), the stretch rod (11) It is rotatablely connected with connecting rod (12), the connecting rod (12) is rotatably connected to sliding block far from the one end of the stretch rod (11) (18)；It further include having piston wall (14), piston (8) setting is in the piston wall (14).

2. a kind of pneumatic actuator for preventing running part from freezing according to claim 1, which is characterized in that described pneumatic Described on motor (5) is communicated with the external air source (4) to feed channel (6), the exhaust pipe on the air motor (5) (7) it is used cooperatively by the sleeve (2) with the valve, the air motor (5) is piston type pneumatic motor.

3. a kind of pneumatic actuator for preventing running part from freezing according to claim 1, which is characterized in that described pneumatic The bottom surface of motor (5) is fixedly connected at least one spring (13), the one end of the spring (13) far from the air motor (5) It is fixedly connected on the shell (1).

4. a kind of pneumatic actuator for preventing running part from freezing according to claim 1, which is characterized in that the piston (8) stretch rod (11) being fixedly connected on passes through the piston wall (14), and stretch rod (11) the outer surface setting gluing has rubber Glue-line.

5. a kind of pneumatic actuator for preventing running part from freezing according to claim 1, which is characterized in that the sliding block (18) metal material is used, sliding block (18) end face is contacted with channel (15), and channel (15) inside and outside wall is metal material.

6. a kind of pneumatic actuator for preventing running part from freezing according to claim 5, which is characterized in that the valve (3) connect with the channel (15), the sliding block (18) is provided with fixed block (16) far from the end face of the channel (15), described Sliding block (18) can slide between the fixed block (16) and the channel (15), the fixed block (16) and the piston wall (14) it is fixedly connected.