High-temperature-resistant pneumatic reversing valve

Abstract

The utility model discloses a high-temperature-resistant pneumatic reversing valve, which relates to the technical field of reversing valves and comprises a valve body, a cylinder body is fixedly mounted at the top of the valve body, a cooling mechanism is arranged on the rear side of the valve body and comprises a liquid storage tank, and a miniature water pump is fixedly mounted on the inner bottom surface of the liquid storage tank. The liquid storage tank is connected with the surface of one side of the valve body through a water guide pipe and a water outlet pipe, the liquid storage tank is connected with a water pumping hole above the micro water pump through the water guide pipe, one end of the water guide pipe and one end of the water outlet pipe are connected with a cooling pipe, the cooling pipe is located in the valve body, and a heat dissipation mechanism is fixedly installed on one side of the liquid storage tank. According to the reversing valve, the cooling mechanism and the heat dissipation mechanism are arranged, liquid in the valve body can be cooled through the cooling mechanism when the reversing valve is used, the situation that normal operation cannot be achieved due to the fact that the temperature in the reversing valve is too high is prevented, cooling liquid absorbing heat is cooled through the heat dissipation mechanism, and the effect of prolonging the service time is achieved.

Description

Technical Field

[0001] The utility model relates to the field of reversing valves, in particular to a high-temperature resistant pneumatic reversing valve. Background Art

[0002] In existing fluid control systems, pneumatic reversing valves are widely used in various scenarios. However, when the working environment temperature is high, traditional pneumatic reversing valves often face challenges. Since high temperature may cause thermal expansion of materials and failure of seals, traditional pneumatic reversing valves are prone to leakage, jamming, and inflexible reversing in high temperature environments, which seriously affect the normal operation and service life of the equipment. Therefore, it is necessary to develop a pneumatic reversing valve that can withstand high temperatures to meet the working needs in high temperature environments. This high temperature resistant pneumatic reversing valve needs to have excellent material selection, sealing performance and temperature control mechanism to ensure stable and reliable operation in high temperature environments.

[0003] After massive searches, it was found that the prior art publication number is CN209569363U, which discloses a high-temperature resistant pneumatic reversing valve, including an inner valve body, which is connected as a whole with a first valve body and a second valve body located at both ends thereof, and a first sample gas inlet, a second sample gas inlet and a sample gas outlet are provided on the side of the inner valve body, and a connecting cavity running through the two end surfaces thereof is provided on the inner valve body, and the connecting cavity is connected with the sample gas outlet, which solves the problem that the pneumatic reversing valves in the prior art are all one-way pneumatic valves with springs, and the switching direction is only one-way, which cannot meet the two-way switching requirements.

[0004] Therefore, based on the above search and in combination with the prior art, the following shortcomings still exist: during use, it is impossible to produce a continuous and effective cooling effect on the valve body when the valve body temperature is too high; when the working environment temperature is high, it is impossible to effectively deal with problems such as thermal expansion of materials and failure of seals due to high temperature. Utility Model Content

[0005] The purpose of the utility model is to provide a high temperature resistant pneumatic reversing valve to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high temperature resistant pneumatic reversing valve comprises a valve body, a cylinder body is fixedly mounted on the top of the valve body, a cooling mechanism is arranged on the rear side of the valve body, the cooling mechanism comprises: a liquid storage tank, a micro water pump is fixedly mounted on the inner bottom surface of the liquid storage tank, and the liquid storage tank is connected to one side surface of the valve body through a water guide pipe and a water outlet pipe.

[0008] Furthermore, the liquid storage tank is connected to the water pumping hole above the micro water pump by a water guide pipe, one end of the water guide pipe and the water outlet pipe is connected to a cooling pipe, and the cooling pipe is located inside the valve body.

[0009] Furthermore, a heat dissipation mechanism is fixedly mounted on one side of the liquid storage tank, and the heat dissipation mechanism comprises: a mounting frame, and a rotatable fan is arranged at the center of the mounting frame.

[0010] Furthermore, a heat sink is provided on one side of the liquid storage tank connected to the heat sink, and the heat sink is embedded on one side surface of the liquid storage tank.

[0011] Furthermore, a reversing cavity is provided inside the valve body, a slidable valve stem is movably installed inside the reversing cavity, and a spring is provided at the bottom of the valve stem.

[0012] Furthermore, two sealing pads for isolating water flow are arranged on both sides of the valve stem, and a valve core is arranged below the sealing pad.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In this solution, by providing a cooling mechanism, the coolant in the liquid storage tank can be circulated and pumped into the valve body through a micro water pump during use, and the valve body is continuously cooled through a cooling pipe, which effectively reduces the working temperature of the valve body and effectively solves the problem of unstable operation of traditional pneumatic reversing valves in high temperature environments;

[0015] 2. In this scheme, by providing a heat dissipation mechanism, during use, the coolant that has absorbed heat inside the cooling tube can be guided back to the inside of the liquid storage tank through the water outlet pipe, and the fan and heat sink in the heat dissipation mechanism can accelerate the heat dissipation of the coolant in the liquid storage tank, thereby improving the efficiency of the entire cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the valve body of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the liquid storage tank of the utility model;

[0019] Figure 4 It is a schematic diagram of the cylinder body structure of the utility model.

[0020] In the figure: 1. valve body; 2. cylinder body; 3. connecting flange; 4. liquid storage tank; 5. water guide pipe; 6. water outlet pipe; 7. water inlet; 8. first water outlet; 9. second water outlet; 10. valve stem; 11. spring; 12. sealing gasket; 13. cooling pipe; 14. micro water pump; 15. liquid filling port; 16. mounting bracket; 17. fan; 18. heat sink. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Please refer to Figures 1 to 4 A high temperature resistant pneumatic reversing valve comprises a valve body 1, a connecting flange 3 is fixedly mounted on the top of the valve body 1, a cylinder body 2 is connected to the upper surface of the valve body 1 through the connecting flange 3, a bottom plate for support is fixedly mounted on the bottom of the valve body 1, a water inlet 7 for drawing in liquid is provided on one side of the valve body 1, a first water outlet 8 and a second water outlet 9 for discharging liquid are provided on the side of the valve body 1 opposite to the water inlet 7, a cooling mechanism is arranged on the rear side of the valve body 1, and the cooling mechanism comprises: a liquid storage tank 4, a micro water pump 14 is fixedly mounted on the inner bottom surface of the liquid storage tank 4, a liquid injection port 15 for injecting coolant into the interior is provided on the upper surface of the liquid storage tank 4, a water guide hole and a water outlet hole which cooperate with each other are provided on the surface of one side of the liquid storage tank 4 and the valve body 1, and a water through hole between the liquid storage tank 4 and the valve body 1 is used The water pipe 5 is connected, the liquid storage tank 4 and the water outlet of the valve body 1 are connected by the water outlet pipe 6, the liquid storage tank 4 and the water pumping hole above the micro water pump 14 are connected by the water pipe 5, the valve body 1 is fixedly installed with a cooling pipe 13, and the side of the cooling pipe 13 is respectively connected to one end of the water pipe 5 and the water outlet pipe 6. When in use, the coolant in the liquid storage tank 4 is extracted by the micro water pump 14, enters the interior of the cooling pipe 13 through the water pipe 5, and is cooled by the surface of the cooling pipe 13 and the liquid in the valve body 1, and the coolant after absorbing heat inside is extracted by the water outlet pipe 6 and returned to the inside of the liquid storage tank 4, so as to prevent leakage, stagnation, inflexible reversing and other phenomena due to thermal expansion of materials and failure of sealing components when working in a high temperature environment;

[0023] A heat dissipation mechanism is fixedly installed on one side of the liquid storage tank 4, and the heat dissipation mechanism includes: a mounting frame 16, a motor is arranged at the center of the mounting frame 16, and a rotatable fan 17 is arranged on the output shaft of the motor. A heat dissipation plate 18 is fixedly installed on one side of the liquid storage tank 4 connected to the heat dissipation plate 18. When in use, the fan 17 is driven by the motor to rotate, and the heat dissipation plate 18 is air-cooled and dissipated. The heat dissipation plate 18 is made of a heat-conducting material, and the heat of the coolant returned to the liquid storage tank 4 can be transferred to the surface of the heat dissipation plate 18, and the heat dissipation plate 18 is cooled by the mounting frame 16, so as to cool the internal coolant, so that the coolant can be used repeatedly to extend the use time;

[0024] A reversing cavity is provided inside the valve body 1, and a slidable valve stem 10 is movably installed inside the reversing cavity. The cylinder body 2 is connected to the valve stem 10 to drive the valve stem 10 to slide. The valve body 1 and the valve stem 10 are both made of high-temperature resistant materials, such as ceramics, high-temperature alloys, etc. A spring 11 is provided at the bottom of the valve stem 10, and the spring 11 is used to apply a reset force to the valve stem 10. The spring 11 is made of high-temperature resistant elastic material, such as high-temperature spring steel, ceramic fiber, etc. Two valve seats are provided on both sides of the valve stem 10, and sealing pads 12 for isolating water flow are fixedly installed on the upper surfaces of the two valve seats, and two valve cores for cooperating with 11 for reset are provided at the bottom of the valve seat.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high temperature resistant pneumatic reversing valve, comprising a valve body (1), characterized in that: A cylinder body (2) is fixedly mounted on the top of the valve body (1), and a cooling mechanism is provided on the rear side of the valve body (1); The cooling mechanism comprises: a liquid storage tank (4), a micro water pump (14) being fixedly mounted on the inner bottom surface of the liquid storage tank (4), and the liquid storage tank (4) and a side surface of the valve body (1) being connected via a water guide pipe (5) and a water outlet pipe (6). The liquid storage tank (4) and the water pump hole above the micro water pump (14) are connected by a water guide pipe (5), and one end of the water guide pipe (5) and the water outlet pipe (6) are connected to a cooling pipe (13), and the cooling pipe (13) is located inside the valve body (1).

2. A high temperature resistant pneumatic reversing valve according to claim 1, characterized in that: A heat dissipation mechanism is fixedly mounted on one side of the liquid storage tank (4), the heat dissipation mechanism comprising: a mounting frame (16), a rotatable fan (17) being arranged at the center of the mounting frame (16).

3. A high temperature resistant pneumatic reversing valve according to claim 2, characterized in that: A heat sink (18) is provided on one side of the liquid storage tank (4) that is connected to the heat sink (18); the heat sink (18) is embedded on a side surface of the liquid storage tank (4).

4. A high temperature resistant pneumatic reversing valve according to claim 1, characterized in that: A reversing cavity is provided inside the valve body (1), a slidable valve stem (10) is movably installed inside the reversing cavity, and a spring (11) is provided at the bottom of the valve stem (10).

5. A high temperature resistant pneumatic reversing valve according to claim 4, characterized in that: Two sealing pads (12) for isolating water flow are arranged on both sides of the valve stem (10), and a valve core is arranged below the sealing pad (12).

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