Temperature self-adaptive cold-proof pneumatic actuator

Abstract

The utility model relates to the technical field of pneumatic actuators, and discloses a temperature self-adaptive cold-proof pneumatic actuator which comprises a pneumatic actuator body, a cold-proof mechanism is arranged at the bottom of the pneumatic actuator body, a fixed protection mechanism is arranged at the bottom of the cold-proof mechanism, and the pneumatic actuator body is arranged in the fixed protection mechanism. When the air temperature is reduced, the temperature sensor is started to enable the heating pipe and the small fan to start to work, heat is generated through the heating pipe and discharged to the top through the small fan to heat the pneumatic actuator body, it is guaranteed that the pneumatic actuator body cannot stop working due to low temperature, and the working efficiency of the pneumatic actuator body is guaranteed; the first air hole and the second air hole are formed, it can be guaranteed that hot air can be effectively transmitted to the position where the pneumatic actuator body is located, it is guaranteed that the hot air is fully diffused around the pneumatic actuator body, and the cold-proof efficiency is further guaranteed.

Description

Temperature-adaptive cold-resistant pneumatic actuator Technical Field

[0001] This utility model relates to the field of pneumatic actuator technology, specifically a temperature-adaptive, cold-resistant pneumatic actuator. Background Technology

[0002] A pneumatic actuator is an actuating device that uses air pressure to open, close, or regulate valves. It is also called a pneumatic actuator mechanism or pneumatic device, but is commonly referred to as a pneumatic head. Pneumatic actuators are sometimes equipped with auxiliary devices. Commonly used ones include valve positioners and handwheel mechanisms. The function of a valve positioner is to use the feedback principle to improve the performance of the actuator, enabling it to achieve accurate positioning according to the control signal from the controller.

[0003] According to a pneumatic actuator disclosed on the patent website (authorization announcement number: CN212155997U), "This utility model discloses a pneumatic actuator, the key technical points of which are: a pneumatic actuator including a cylinder, a left end cover, a right end cover, a left piston, a right piston and a gear shaft disposed in the cylinder, both the left piston and the right piston are provided with straight teeth, the gear shaft is disposed between the left piston and the right piston and is engaged with the straight teeth through transmission, both the left piston and the right piston are provided with a collar between them and the cylinder, the collar is sleeved on the surface of the left piston and the right piston, the straight teeth are provided with a first anti-breakage part, the gear shaft is provided with a second anti-breakage part, the top of the gear shaft is provided with a positioning part, the upper end of the positioning part is provided with a multi-functional interface; this utility model has less wear, is not easily damaged, is simple to use, is more convenient to use, and has a wider range of applications."

[0004] Based on the above, the applicant believes the following deficiencies exist:

[0005] The pneumatic actuator includes a cylinder body, a left end cover, a right end cover, a left piston, a right piston, and a gear shaft disposed within the cylinder body. Both the left and right pistons are provided with straight teeth. The gear shaft is disposed between the left and right pistons and engages with them through the straight teeth. The device is not designed with cold-proof components because in some installation environments, the pneumatic actuator needs to be installed in colder locations as required. Low temperatures may affect the working efficiency of the pneumatic actuator and cause it to stop working. Summary of the Invention

[0006] The purpose of this invention is to provide a temperature-adaptive, cold-resistant pneumatic actuator to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a temperature-adaptive cold-proof pneumatic actuator, comprising a pneumatic actuator body, a cold-proof mechanism at the bottom of the pneumatic actuator body, a fixed protective mechanism at the bottom of the cold-proof mechanism, and the pneumatic actuator body disposed inside the fixed protective mechanism.

[0008] Preferably, the cold-proof mechanism includes a heating base, which is disposed at the bottom of the pneumatic actuator body. A top cover is snapped onto the bottom of the heating base, and a vent hole is opened at the top of the top cover. Insertion holes are opened at the four corners of the top of the heating base. A fixing seat is fixedly connected to the bottom inside the heating base, and a heating tube is fixedly connected to the top of the fixing seat. An installation groove is opened at the center of the bottom inside the heating base, and a small fan is disposed on the back of the installation groove. A temperature sensor is fixedly connected to the rear end of the bottom inside the heating base. When the temperature drops, the temperature sensor is activated, causing the heating tube and the small fan to start working. Heat is generated through the heating tube and discharged to the top by the small fan to heat the pneumatic actuator body, ensuring that the pneumatic actuator body will not stop working due to low temperature and ensuring the working efficiency of the pneumatic actuator body. The temperature sensor is a PT100 type temperature sensor.

[0009] Preferably, the fixing base and heating tube are provided in seven groups and are arranged in a straight line at the bottom of the heating base.

[0010] Preferably, the fixed protective mechanism includes a first fixed outer shell, which is disposed at the bottom of the pneumatic actuator body. Insert blocks are fixedly connected to the four corners of the bottom of the first fixed outer shell. A second fixed outer shell is disposed at the top of the first fixed outer shell. Fixing blocks are fixedly connected to the left and right sides of both the first and second fixed outer shells. Fixing holes are provided at the top of the fixing blocks, and fixing bolts are inserted into the fixing holes. Thermal insulation coatings are fixedly connected to the left and right sides of the first fixed outer shell and the left and right sides and top of the second fixed outer shell. A second ventilation hole is provided at the bottom of the first fixed outer shell. The arrangement of the first and second fixed outer shells ensures the stability of the pneumatic actuator body. Simultaneously, the thermal insulation coating on the surface can block cold winds, reducing the impact of cold weather on the internal pneumatic actuator body, and the overall design facilitates easy assembly and disassembly.

[0011] Preferably, there are eight sets of fixing blocks and fixing holes, and the first fixing shell and the second fixing shell are connected together by fixing bolts.

[0012] Preferably, the cold-proof mechanism includes a first ventilation hole, and the second ventilation hole corresponds one-to-one with the first ventilation hole.

[0013] Compared with the prior art, this utility model provides a temperature-adaptive, cold-resistant pneumatic actuator, which has the following beneficial effects:

[0014] 1. This temperature-adaptive cold-proof pneumatic actuator is equipped with a cold-proof mechanism. When the temperature drops, the temperature sensor is activated, which causes the heating element and small fan to start working. Heat is generated through the heating element and discharged to the top by the small fan to heat the pneumatic actuator body, ensuring that the pneumatic actuator body will not stop working due to low temperature and ensuring the working efficiency of the pneumatic actuator body.

[0015] 2. This temperature-adaptive cold-proof pneumatic actuator is equipped with vent hole one and vent hole two, which can ensure that hot air can be effectively transferred to the location of the pneumatic actuator body and ensure that the hot air is fully diffused around the pneumatic actuator body, further ensuring the efficiency of cold protection. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 is a schematic diagram of the cold-proof mechanism of this utility model;

[0019] Figure 3 is a schematic diagram of the detached cold-proof mechanism of this utility model;

[0020] Figure 4 is a schematic diagram of the structural fixing and protection mechanism of this utility model separated.

[0021] In the diagram: 1. Pneumatic actuator body; 2. Cold protection mechanism; 21. Heating base; 22. Top cover; 23. Vent hole one; 24. Insertion hole; 25. Fixing base; 26. Heating tube; 27. Mounting slot; 28. Small fan; 29. ​​Temperature sensor; 3. Fixing and protection mechanism; 31. Fixing outer shell one; 32. Insertion block; 33. Fixing outer shell two; 34. Fixing block; 35. Fixing hole; 36. Fixing bolt; 37. Thermal insulation coating; 38. Vent hole two. Detailed Implementation

[0022] 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.

[0023] 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.

[0024] This utility model provides the following technical solution:

[0025] Example 1

[0026] Please refer to Figures 1-3. The temperature-adaptive cold-proof pneumatic actuator includes a pneumatic actuator body 1, a cold-proof mechanism 2 at the bottom of the pneumatic actuator body 1, a fixed protection mechanism 3 at the bottom of the cold-proof mechanism 2, and the pneumatic actuator body 1 is located inside the fixed protection mechanism 3.

[0027] The cold protection mechanism 2 includes a heating base 21, which is located at the bottom of the pneumatic actuator body 1. A top cover 22 is snapped onto the bottom of the heating base 21. A vent hole 23 is opened on the top of the top cover 22. Insert holes 24 are opened at the four corners of the top of the heating base 21. A fixing seat 25 is fixedly connected to the bottom inside the heating base 21. A heating tube 26 is fixedly connected to the top of the fixing seat 25. An installation groove 27 is opened in the center of the bottom inside the heating base 21. A small fan 28 is installed on the back of the installation groove 27. A temperature sensor 29 is fixedly connected to the rear end of the bottom inside the heating base 21. When the temperature drops, the temperature sensor 29 is activated to start the heating tube 26 and the small fan 28 to work. Heat is generated by the heating tube 26 and discharged to the top by the small fan 28 to heat the pneumatic actuator body 1, ensuring that the pneumatic actuator body 1 will not stop working due to low temperature and ensuring the working efficiency of the pneumatic actuator body 1. The temperature sensor is a PT100 type temperature sensor.

[0028] There are seven sets of fixed base 25 and heating tube 26, which are arranged in a straight line at the bottom of the heating base 21.

[0029] Example 2

[0030] Please refer to Figures 1-4. Based on Embodiment 1, the fixed protection mechanism 3 further includes a fixed outer shell 31. The fixed outer shell 31 is located at the bottom of the pneumatic actuator body 1. Insert blocks 32 are fixedly connected to the four corners of the bottom of the fixed outer shell 31. A fixed outer shell 33 is provided on the top of the fixed outer shell 31. Fixed blocks 34 are fixedly connected to the left and right sides of both the fixed outer shell 31 and the fixed outer shell 33. Fixed holes 35 are opened on the top of the fixed blocks 34. Fixed bolts 36 are inserted into the fixed holes 35. Thermal insulation coatings 37 are fixedly connected to the left and right sides of the fixed outer shell 31 and the left and right sides and top of the fixed outer shell 33. Ventilation holes 38 are opened at the bottom of the interior of the fixed outer shell 31. The fixed outer shell 31 and the fixed outer shell 33 can ensure the stability of the pneumatic actuator body 1. At the same time, the thermal insulation coating 37 on the surface can block cold wind and reduce the impact of cold weather on the internal pneumatic actuator body 1. The whole is easy to disassemble and assemble.

[0031] The fixing block 34 and fixing hole 35 are provided in eight sets, and the fixing outer shell 1 31 and fixing outer shell 2 33 are connected together by fixing bolts 36;

[0032] The cold protection mechanism 2 includes a ventilation hole 23, a ventilation hole 38, and a ventilation hole 23 corresponding to each other.

[0033] In actual operation, when this device is used and the temperature drops, the temperature sensor activates, causing the heating element and small fan to start working. The heating element generates heat, which is then exhausted to the top by the small fan to heat the pneumatic actuator body, ensuring that the pneumatic actuator body will not stop working due to low temperature and guaranteeing the working efficiency of the pneumatic actuator body. The temperature sensor is a PT100 type temperature sensor. The setting of fixed housing 1 31 and fixed housing 2 33 can ensure the stability of the pneumatic actuator body 1. At the same time, it can work with the heat insulation coating 37 on the surface to block cold wind and reduce the impact of cold weather on the internal pneumatic actuator body 1. The whole is easy to disassemble and assemble.

[0034] 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 temperature-adaptive, cold-resistant pneumatic actuator, comprising a pneumatic actuator body (1), characterized in that: The pneumatic actuator body (1) is provided with a cold protection mechanism (2) at the bottom, and a fixed protection mechanism (3) is provided at the bottom of the cold protection mechanism (2). The pneumatic actuator body (1) is located inside the fixed protection mechanism (3).

2. The temperature-adaptive cold-weather pneumatic actuator of claim 1, wherein: The cold protection mechanism (2) includes a heating base (21), which is located at the bottom of the pneumatic actuator body (1). A top cover (22) is snapped onto the bottom of the heating base (21). A vent hole (23) is opened on the top of the top cover (22). Insert holes (24) are opened at the four corners of the top of the heating base (21). A fixing seat (25) is fixedly connected to the bottom inside the heating base (21). A heating tube (26) is fixedly connected to the top of the fixing seat (25). An installation groove (27) is opened in the center of the bottom inside the heating base (21). A small fan (28) is set on the back of the installation groove (27). A temperature sensor (29) is fixedly connected to the rear end of the bottom inside the heating base (21).

3. The temperature-adaptive cold-weather pneumatic actuator of claim 2, wherein: The fixed base (25) and heating tube (26) are provided in seven sets and are arranged in a straight line at the bottom of the heating base (21).

4. The temperature-adaptive cold-resistant pneumatic actuator according to claim 1, characterized in that: The fixed protective mechanism (3) includes a fixed outer shell (31), which is located at the bottom of the pneumatic actuator body (1). The four corners of the bottom of the fixed outer shell (31) are fixedly connected with inserts (32). The top of the fixed outer shell (31) is provided with a fixed outer shell (33). The left and right sides of the fixed outer shell (31) and the fixed outer shell (33) are fixedly connected with fixing blocks (34). The top of the fixing blocks (34) is provided with fixing holes (35). Fixing bolts (36) are inserted into the fixing holes (35). The left and right sides of the fixed outer shell (31) and the left and right sides and the top of the fixed outer shell (33) are fixedly connected with heat insulation coatings (37). The bottom of the fixed outer shell (31) is provided with ventilation holes (38).

5. The temperature-adaptive, cold-weather pneumatic actuator of claim 4, wherein: The fixing block (34) and fixing hole (35) are provided in eight sets, and the first fixing shell (31) and the second fixing shell (33) are connected together by fixing bolts (36).

6. The temperature-adaptive, cold-weather pneumatic actuator of claim 5, wherein: The cold protection mechanism (2) includes a first ventilation hole (23), and the second ventilation hole (38) corresponds to the first ventilation hole (23).

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