Heptafluoropropane stirring device

Abstract

The utility model discloses a heptafluoropropane stirring device which comprises a mixer shell, an inner tank is arranged in the mixer shell, an interlayer is arranged between the inner tank and the mixer shell, a heating pipe is arranged in the interlayer, a fixed seat is fixedly connected in the inner tank, and a ball screw threaded rod is rotationally connected to the inner side of the fixed seat. The outer wall of a threaded rod of the ball screw is slidably connected with a screw sliding table, the outer wall of the screw sliding table is fixedly connected with a fixing plate, the fixing plate is of an annular structure, the outer wall of the fixing plate is fixedly connected with a scraper, a plurality of annular openings are formed in the fixing plate, and mixed gas flow dividing pipes and additive flow dividing pipes are arranged in the annular openings correspondingly. And the top sides of the mixed gas shunting pipe and the additive shunting pipe are respectively connected with a mixed gas input pipe and an additive input pipe. The device can realize mixing and stirring of substances in gas and liquid states and heptafluoropropane main gas, so that the mixing uniformity of heptafluoropropane gas, inert gas and an additive is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of the production of heptafluoropropane fire extinguishers, in particular to a heptafluoropropane stirring device. Background Technique

[0002] The heptafluoropropane (HFC-227ea) fire extinguishing agent has the characteristics of being clean, low-toxic, having good electrical insulation, high fire extinguishing efficiency, and not damaging the atmospheric ozone layer, and is a relatively excellent one among the clean gases that replace halogenated alkane fire extinguishing agents.

[0003] In order to enhance the performance of the heptafluoropropane fire extinguishing agent or meet specific application requirements, it is necessary to use a mixer to mix heptafluoropropane with additives, inert gases or catalysts, etc. However, the existing mixers cannot ensure the uniformity of the mixing of inert gases, additives and catalysts in various states with heptafluoropropane, and the practicability is relatively low, so improvement is needed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heptafluoropropane stirring device to solve the problem that the mixer in the above background technique cannot ensure the mixing uniformity of inert gases, additives and catalysts in various states with heptafluoropropane.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A heptafluoropropane stirring device includes a mixer housing. An inner tank is arranged inside the mixer housing, and a sandwich layer is arranged between the inner tank and the mixer housing. A heating pipe is arranged inside the sandwich layer. A fixed seat is fixedly connected inside the inner tank. A ball screw threaded rod is rotatably connected inside the fixed seat. A lead screw slide is slidably connected to the outer wall of the ball screw threaded rod. A fixing plate is fixedly connected to the outer wall of the lead screw slide. The fixing plate is of an annular structure. Scraping blades are fixedly connected to the outer wall of the fixing plate. A plurality of annular openings are formed in the fixing plate. A mixed gas shunt pipe and an additive shunt pipe are respectively arranged inside the annular openings. A mixed gas input pipe and an additive input pipe are respectively connected to the top sides of the mixed gas shunt pipe and the additive shunt pipe. A mixing plate is arranged at the bottom of the fixing plate. A main gas input pipe and a discharge pipe are respectively connected to both sides of the inner tank.

[0006] Preferably, a driving motor is installed at the top end of the mixer housing, and one end of the driving motor shaft is connected to one end of the ball screw threaded rod.

[0007] Preferably, one ends of the mixed gas input pipe and the additive input pipe both penetrate through the mixer housing and are located on the top side of the mixer housing. Input pumps and solenoid valves are arranged on the mixed gas input pipe, the additive input pipe and the main gas input pipe.

[0008] Preferably, spray nozzles are provided at the bottoms of the mixed gas shunt pipe and the additive shunt pipe, and the spray nozzles are evenly distributed at equal intervals in a circular ring shape with respect to the bottoms of the mixed gas shunt pipe and the additive shunt pipe.

[0009] Preferably, a connecting rod is fixedly connected to the bottom of the fixing plate, and one end of the connecting rod is fixedly connected to the mixing plate.

[0010] Preferably, the scraping blades are symmetrically distributed up and down with respect to the bisector of the fixing plate, and the scraping blades are made of rubber.

[0011] Preferably, an exhaust pipe is connected to the top side of the fixing plate, one end of the exhaust pipe penetrates through the mixer housing and is located on the top side of the mixer housing, and solenoid valves are provided on both the exhaust pipe and the discharge pipe.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] (1) This device can mix and stir substances in a gaseous and liquid state with the main heptafluoropropane gas, so as to achieve the uniformity of the mixture of heptafluoropropane gas with inert gas and additives.

[0014] (2) This device is connected with a main gas input pipe on one side of the inner tank, and a fixing plate that can automatically lift is arranged inside the inner tank. At the same time, a mixed gas shunt pipe and an additive shunt pipe are arranged on the fixing plate. The inert gas and the additive can be respectively shunted from top to bottom through the mixed gas shunt pipe and the additive shunt pipe. At the same time, the inert gas and the additive are pressurized by an input pump and then come into contact and mix with the main heptafluoropropane gas inside the inner tank, thereby improving the practicability of this device and the mixing effect.

[0015] (3) This device is provided with a mixing plate at the bottom of the fixing plate. During the lifting process of the fixing plate, the mixing plate is driven to lift synchronously, so as to stir and mix the main heptafluoropropane gas and the additive liquid. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a heptafluoropropane stirring device of the present utility model;

[0017] Figure 2 It is a Figure 1 magnified view of part A in a heptafluoropropane stirring device of the present utility model;

[0018] Figure 3 It is a bottom view of the fixing plate of a heptafluoropropane stirring device of the present utility model;

[0019] Figure 4 It is a bottom view of the mixing plate of a heptafluoropropane stirring device of the present utility model.

[0020] In the figure: 1. Main gas inlet pipe; 2. Inlet pump; 3. Solenoid valve; 4. Mixer housing; 5. Fixed plate; 6. Scraping blade; 7. Mixing plate; 8. Mixed gas inlet pipe; 9. Driving motor; 10. Fixed seat; 11. Additive inlet pipe; 12. Exhaust pipe; 13. Ball screw threaded rod; 14. Screw slide; 15. Inner tank; 16. Heating pipe; 17. Discharge pipe; 18. Connecting rod; 19. Mixed gas shunt pipe; 20. Sprayer; 21. Additive shunt pipe. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4, the present utility model provides a technical solution: a heptafluoropropane stirring device, which includes a mixer housing 4. Inside the mixer housing 4, there is an inner tank 15. At the top of the mixer housing 4, a driving motor 9 is installed. One end of the shaft of the driving motor 9 is connected to one end of a ball screw threaded rod 13. With this structure, the driving motor 9 can drive the ball screw threaded rod 13 to rotate automatically. There is a sandwich layer between the inner tank 15 and the mixer housing 4, and a heating pipe 16 is arranged inside the sandwich layer. Inside the inner tank 15, a fixed seat 10 is fixedly connected. The ball screw threaded rod 13 is rotatably connected to the inner side of the fixed seat 10. A lead screw slide 14 is slidably connected to the outer wall of the ball screw threaded rod 13. A fixing plate 5 is fixedly connected to the outer wall of the lead screw slide 14. At the bottom of the fixing plate 5, a connecting rod 18 is fixedly connected. One end of the connecting rod 18 is fixedly connected to a mixing plate 7. With this structure, during the lifting process of the fixing plate 5, it can drive the mixing plate 7 to lift and stir the heptafluoropropane main gas and the additive liquid. The fixing plate 5 is in an annular structure. A scraping blade 6 is fixedly connected to the outer wall of the fixing plate 5. The scraping blades 6 are symmetrically distributed up and down with respect to the bisector of the fixing plate 5. The scraping blade 6 is made of rubber material. With this structure, by setting the scraping blade 6, while reducing the gap between the fixing plate 5 and the inner wall of the inner tank 15, the fixing plate 5 can move up and down normally. An exhaust pipe 12 is connected to the top side of the fixing plate 5. One end of the exhaust pipe 12 penetrates through the mixer housing 4 and is located at the top side of the mixer housing 4. Solenoid valves 3 are arranged on both the exhaust pipe 12 and the discharge pipe 17. A discharge pump is arranged on the discharge pipe 17. With this structure, the finished product material in the inner tank 15 can be discharged through the discharge pipe 17. A plurality of annular openings are formed on the fixing plate 5. A mixed gas shunt pipe 19 and an additive shunt pipe 21 are respectively arranged inside the annular openings. The top sides of the mixed gas shunt pipe 19 and the additive shunt pipe 21 are respectively connected to a mixed gas input pipe 8 and an additive input pipe 11. Nozzles 20 are arranged at the bottoms of both the mixed gas shunt pipe 19 and the additive shunt pipe 21. The nozzles 20 are equidistantly distributed in a circular ring shape at the bottoms of the mixed gas shunt pipe 19 and the additive shunt pipe 21. With this structure, through the mixed gas shunt pipe 19 and the additive shunt pipe 21, the inert gas and the additive can be discharged evenly, which is beneficial to the mixing of the inert gas and the additive with the heptafluoropropane main gas. One ends of both the mixed gas input pipe 8 and the additive input pipe 11 penetrate through the mixer housing 4 and are located at the top side of the mixer housing 4. Input pumps 2 and solenoid valves 3 are arranged on both the mixed gas input pipe 8, the additive input pipe 11 and the main gas input pipe 1. The sections of the mixed gas input pipe 8 and the additive input pipe 11 located inside the inner tank 15 are made of corrugated telescopic pipe material, so that they can expand and contract in cooperation with the lifting of the fixing plate 5 during the lifting process of the fixing plate 5. A mixing plate 7 is arranged at the bottom of the fixing plate 5. The main gas input pipe 1 and the discharge pipe 17 are respectively connected to both sides of the inner tank 15. During the rotation of the ball screw threaded rod 13 of this device, it can drive the lead screw slide 14 to slide longitudinally. During the movement of the lead screw slide 14, it can drive the height of the fixing plate 5 to be adjusted.

[0023] Working principle: When using this heptafluoropropane stirring device, first, when mixing and stirring heptafluoropropane gas and inert gas, the heptafluoropropane gas and inert gas are respectively input into the interior of the inner tank 15 through the main gas input pipe 1 and the mixed gas input pipe 8 after being pressurized by the input pump 2. The heptafluoropropane gas enters the interior of the inner tank 15 and is stored at the bottom of the inner tank 15, while the inert gas enters the mixed gas shunt pipe 19 from the mixed gas input pipe 8 and then is evenly sprayed from the nozzles 20 at the bottom of the mixed gas shunt pipe 19 from top to bottom to fully contact the heptafluoropropane gas to achieve the purpose of mixing. If mixing heptafluoropropane gas and additives, the heptafluoropropane gas and additives are respectively input from the main gas input pipe 1 and the additive input pipe 11, so that the additives flow out from the nozzles 20 at the bottom of the additive shunt pipe 21 to contact the heptafluoropropane gas. During the mixing process, the drive motor 9 can be started, and the drive motor 9 drives the ball screw threaded rod 13 to rotate. During the rotation of the ball screw threaded rod 13, the screw slide 14 and the fixing plate 5 are driven to lift and lower, and when the fixing plate 5 reciprocates up and down, the mixing plate 7 at the bottom is driven to stir the heptafluoropropane gas and additives, improving the mixing effect.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heptafluoropropane stirring device, comprising a mixer housing (4), an inner tank (15) being arranged inside the mixer housing (4), an interlayer being arranged between the inner tank (15) and the mixer housing (4), a heating tube (16) being arranged inside the interlayer, characterized in that: The inner tank (15) is fixedly connected to a fixed seat (10), the inner side of the fixed seat (10) is rotatably connected to a ball screw threaded rod (13), the outer wall of the ball screw threaded rod (13) is slidably connected to a screw slide (14), the outer wall of the screw slide (14) is fixedly connected to a fixed plate (5), the fixed plate (5) is annular in structure, the outer wall of the fixed plate (5) is fixedly connected to a scraper (6), a plurality of annular openings are provided on the fixed plate (5), a mixed gas diversion pipe (19) and an additive diversion pipe (21) are respectively provided inside the annular openings, the top sides of the mixed gas diversion pipe (19) and the additive diversion pipe (21) are respectively connected to a mixed gas input pipe (8) and an additive input pipe (11), a mixing plate (7) is provided at the bottom of the fixed plate (5), and the two sides of the inner tank (15) are respectively connected to a main gas input pipe (1) and a discharge pipe (17).

2. A heptafluoropropane stirring device according to claim 1, characterized in that: A driving motor (9) is installed at the top end of the mixer housing (4), and one end of the shaft of the driving motor (9) is connected to one end of the ball screw threaded rod (13).

3. A heptafluoropropane stirring device according to claim 1, characterized in that: One end of the mixed gas input pipe (8) and the additive input pipe (11) both penetrate the mixer housing (4) and are located on the top side of the mixer housing (4); the mixed gas input pipe (8), the additive input pipe (11) and the main gas input pipe (1) are all provided with an input pump (2) and a solenoid valve (3).

4. A heptafluoropropane stirring device according to claim 1, characterized in that: The bottom of the mixed gas diversion pipe (19) and the additive diversion pipe (21) are both provided with nozzles (20), and the nozzles (20) are distributed in a circular shape at equal intervals with respect to the bottom of the mixed gas diversion pipe (19) and the additive diversion pipe (21).

5. A heptafluoropropane stirring device according to claim 1, characterized in that: A connecting rod (18) is fixedly connected to the bottom of the fixed plate (5), and one end of the connecting rod (18) is fixedly connected to the mixing plate (7).

6. A heptafluoropropane stirring device according to claim 1, characterized in that: The scrapers (6) are symmetrically distributed up and down about the bisector of the fixed plate (5), and the scrapers (6) are made of rubber.

7. A heptafluoropropane stirring device according to claim 1, characterized in that: The top side of the fixed plate (5) is connected to an exhaust pipe (12), one end of the exhaust pipe (12) passes through the mixer housing (4) and is located on the top side of the mixer housing (4), and both the exhaust pipe (12) and the discharge pipe (17) are provided with a solenoid valve (3).

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