Leakage-proof valve of polypropylene reaction kettle

Abstract

The utility model discloses a leakproof valve of a polypropylene reaction kettle, which comprises a valve body, a valve opening and closing structure is mounted in the middle of the valve body, a heating unit is mounted at a cavity of the valve body, and polypropylene scraping devices are mounted at the left end and the right end of the valve body. The valve plate can block a polypropylene solution in the valve, leakage of the polypropylene solution is reduced, in addition, when the valve element is closed, the sealing effect is improved through contact of the sealing sleeve and the valve port, after the valve body is heated, due to thermal expansion and cold contraction, the rubber ring in the later period is locked and fastened on the outer sides of the valve element and the sealing sleeve, and the sealing effect is improved. The flowing polypropylene solution enables the blades to rotate, then the L-shaped plate and the bristles rotate on the inner wall of the valve body, the solution hung on the wall is scraped off, the blocking condition during flowing is relieved, and when no liquid flows to close the valve element, the valve body is heated through a heating wire after being powered on, so that the sealing effect is further improved; solution solidified at the valve port is prevented from hindering the sealing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a leak-proof valve for a polypropylene reactor. Background Technique

[0002] A polypropylene reactor is a device specifically used for producing polypropylene, which is widely used in the fields of chemical industry, medicine, food, etc. A valve needs to be set at the discharge port of the polypropylene reactor for discharging the polypropylene solution. The existing valves of polypropylene reactors have a simple structure, poor sealing effect, and are prone to leakage.

[0003] In the prior art, the publication number is CN212616707U, and the technical solution disclosed in the patent document is as follows: A leak-proof valve for a polypropylene reactor, including a valve body, a valve core, a valve rod, a valve cover, a valve seat and an electric heating device. Flange plates are connected to both ends of the valve body. A valve seat is connected inside the valve body. A cylindrical valve orifice is opened in the center of the valve seat. The valve rod is threadedly connected to the threaded hole at the upper end of the valve body. A support frame is rotatably connected to the lower end of the valve rod. A cylindrical valve core is fixedly connected to the lower end of the support frame.

[0004] The above patent blocks the valve orifice through the valve core, with a simple structural design and poor sealing performance. In addition, since the polypropylene solution is prone to wall hanging after flowing, it will cause blockage at the valve, and the set heating rod only heats the valve seat, with general melting effect, affecting the discharge of the polypropylene solution. Content of the Utility Model

[0005] The purpose of the utility model is to provide a leak-proof valve for a polypropylene reactor to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A leak-proof valve for a polypropylene reactor, including a valve body, a valve opening and closing structure is installed in the middle of the valve body, a heating unit is installed in the cavity of the valve body, and polypropylene scraping devices are installed at both the left and right ends of the valve body.

[0007] A valve plate is fixedly connected inside the valve body. A valve orifice is opened in the middle of the valve plate. Rubber rings are arranged on both the upper and lower sides of the valve orifice.

[0008] In the above technical solution, the set valve plate can block the polypropylene solution inside the valve, reducing the leakage of the polypropylene solution. In addition, when the valve core is closed, the sealing effect is increased by the contact between the sealing sleeve and the valve orifice.

[0009] The polypropylene scraping device includes an installation ring. Installation plates are fixedly connected to the peripheries of the installation ring. A scraping component is rotatably installed in the middle of the installation ring.

[0010] As a further preference of this technical solution, a valve cover is arranged on the outer side of the valve body. Connecting flanges are fixedly connected to both the left and right ends of the valve body. Limiting grooves are opened at both the left and right ends of the valve body, and mounting grooves are opened around the limiting grooves.

[0011] As a further preference of this technical solution, the mounting rings are all embedded in the limiting grooves, and the mounting plates are connected to the mounting grooves by bolts.

[0012] In the above technical solution, the arranged mounting rings and mounting plates are bolt - connected at the limiting grooves and mounting grooves, which is convenient for disassembly and assembly.

[0013] As a further preference of this technical solution, the valve opening and closing structure includes a valve stem. The valve stem is thread - connected to the valve body and extends upward through the valve cover. A handwheel is fixedly connected to the top side of the valve stem, a valve core is fixedly connected to the bottom side of the valve stem, and a sealing sleeve is sleeved on the outer surface of the valve core.

[0014] As a further preference of this technical solution, the outer surface of the sealing sleeve contacts the valve port, and the upper and lower sides of the sealing sleeve contact the rubber rings arranged up and down.

[0015] In the above technical solution, after the valve body is heated, due to thermal expansion and contraction, the rubber rings are locked later and fastened on the outer sides of the valve core and the sealing sleeve, further improving the sealing effect and preventing leakage.

[0016] As a further preference of this technical solution, the heating unit includes a reinforcing plate. The reinforcing plate is arranged in the inner cavity of the valve body. A heating wire is wound around the reinforcing plate, and a heat - insulating layer is arranged in the inner cavity of the valve body and is located outside the reinforcing plate and the heating wire.

[0017] In the above technical solution, when there is no liquid flow and the valve core is closed, the valve body is heated by the heating wire after being electrified, avoiding the solidified solution at the valve port from hindering the sealing effect.

[0018] As a further preference of this technical solution, the scraping assembly includes a rotating shaft. The rotating shaft is rotatably arranged in the middle of the mounting ring through a bearing. A sleeve is sleeved on the outer side of the rotating shaft. Blades are arranged on the outer surface of the sleeve. L - shaped plates are arranged on the outer surface of the sleeve in the circumferential direction, and brush hairs are arranged on the side of the L - shaped plates close to the inner wall of the valve body.

[0019] In the above technical solution, the flowing polypropylene solution makes the blades rotate, and then makes the L - shaped plates and the brush hairs rotate on the inner wall of the valve body, scraping off the solution adhering to the wall, and thus reducing the blockage condition during flow.

[0020] The present utility model provides a leak - proof valve for a polypropylene reactor, which has the following beneficial effects:

[0021] (1) The utility model can block the polypropylene solution in the valve through the arranged valve plate, reducing the leakage of the polypropylene solution. Additionally, when the valve core is closed, the sealing effect is increased by the contact between the sealing sleeve and the valve port. After the valve body is heated, due to thermal expansion and contraction, the rubber ring is locked later and fastened outside the valve core and the sealing sleeve, further improving the sealing effect and preventing leakage.

[0022] (2) The utility model is bolt - connected to the limit groove and the installation groove through the arranged installation ring and installation plate, which is convenient for disassembly and assembly. Due to the flowing polypropylene solution, the blades rotate, and then the L - shaped plate and the brush rotate on the inner wall of the valve body to scrape off the solution adhering to the wall, thereby reducing the blockage condition during flow. When there is no liquid flow and the valve core is closed, the valve body is heated by the heating wire after being electrified, avoiding the solidified solution at the valve port from hindering the sealing effect. Brief Description of the Drawings

[0023] Figure 1 is the structural schematic diagram of the whole utility model;

[0024] Figure 2 is the structural schematic diagram of the valve opening and closing structure of the utility model;

[0025] Figure 3 is the structural schematic diagram of the polypropylene scraping device of the utility model;

[0026] Figure 4 is the structural schematic diagram of the valve plate of the utility model;

[0027] Figure 5 is the structural schematic diagram of the heating unit of the utility model;

[0028] In the figure: 1. Valve body; 2. Valve opening and closing structure; 3. Heating unit; 4. Polypropylene scraping device; 11. Valve cover; 12. Connecting flange; 13. Valve plate; 131. Valve port; 132. Rubber ring; 14. Limit groove; 15. Installation groove; 21. Valve rod; 22. Handwheel; 23. Valve core; 24. Sealing sleeve; 31. Reinforcing plate; 32. Heating wire; 33. Heat - insulating layer; 41. Installation ring; 42. Installation plate; 43. Scraping assembly; 431. Rotating shaft; 432. Sleeve; 433. Blade; 434. L - shaped plate; 435. Brush. Detailed Description of the Embodiment

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0030] The present utility model provides a technical solution: As Figure 3 and Figure 4As shown, in this embodiment, a leak-proof valve for a polypropylene reactor includes a valve body 1. A valve opening and closing structure 2 is installed in the middle of the valve body 1. A heating unit 3 is installed in the cavity of the valve body 1. Polypropylene scraping devices 4 are installed at both the left and right ends of the valve body 1. A valve plate 13 is fixedly connected inside the valve body 1. A valve port 131 is opened in the middle of the valve plate 13. Rubber rings 132 are arranged on both the upper and lower sides of the valve port 131. A valve cover 11 is arranged on the outer side of the valve body 1. Connecting flanges 12 are fixedly connected to both the left and right ends of the valve body 1. Limiting grooves 14 are opened at both the left and right ends of the valve body 1. Installation grooves 15 are opened around the limiting grooves 14. Installation rings 41 are all embedded in the limiting grooves 14. Installation plates 42 are connected to the installation grooves 15 through bolts.

[0031] As Figure 1 and Figure 2 shown, the valve opening and closing structure 2 includes a valve stem 21. The valve stem 21 is threadedly connected to the valve body 1 and extends upward through the valve cover 11. A handwheel 22 is fixedly connected to the top side of the valve stem 21. A valve core 23 is fixedly connected to the bottom side of the valve stem 21. A sealing sleeve 24 is sleeved on the outer surface of the valve core 23. The outer surface of the sealing sleeve 24 contacts the valve port 131. The upper and lower sides of the sealing sleeve 24 contact the rubber rings 132 arranged up and down. By providing the valve plate 13, the polypropylene solution inside the valve can be blocked, reducing the leakage of the polypropylene solution. In addition, when the valve core 23 is closed, the contact between the sealing sleeve 24 and the valve port 131 increases the sealing effect. After the valve body is heated, due to thermal expansion and contraction, the later rubber rings 132 are locked and fastened on the outer sides of the valve core 23 and the sealing sleeve 24, further improving the sealing effect and preventing leakage.

[0032] As Figure 5 shown, the heating unit 3 includes a reinforcing plate 31. The reinforcing plate 31 is arranged in the inner cavity of the valve body 1. A heating wire 32 is wound around the reinforcing plate 31. A heat insulation layer 33 is arranged in the inner cavity of the valve body 1 and is located outside the reinforcing plate 31 and the heating wire 32. When there is no liquid flow and the valve core 23 is closed, the valve body 1 is heated by the heating wire 32 after being electrified, avoiding the solidified solution at the valve port 131 from hindering the sealing effect.

[0033] As Figure 2 and Figure 3As shown in the figure, the polypropylene scraping device 4 includes an installation ring 41. Installation plates 42 are fixedly connected to the periphery of the installation ring 41. A scraping component 43 is rotatably installed in the middle of the installation ring 41. The scraping component 43 includes a rotating shaft 431. The rotating shaft 431 is rotatably arranged in the middle of the installation ring 41 through a bearing. A sleeve 432 is sleeved outside the rotating shaft 431. Blades 433 are arranged on the outer surface of the sleeve 432. L-shaped plates 434 are arranged on the outer surface of the sleeve 432 in the circumferential direction. Brush hairs 435 are arranged on one side of the L-shaped plates 434 close to the inner wall of the valve body 1. By providing the installation ring 41 and the installation plates 42, it is bolted to the limit grooves 14 and the installation grooves 15, which is convenient for disassembly and assembly. Since the flowing polypropylene solution makes the blades 433 rotate, the L-shaped plates 434 and the brush hairs 435 rotate on the inner wall of the valve body 1, scraping off the solution adhering to the wall, thereby reducing the blockage condition during flow.

[0034] The present utility model provides a leak-proof valve for a polypropylene reaction kettle. The specific working principle is as follows: After the polypropylene reaction kettle produces, the polypropylene solution is discharged. The polypropylene solution flows through the valve and drives the blades 433 to rotate, so that the L-shaped plates 434 and the brush hairs 435 rotate on the inner wall of the valve body 1, scraping off the solution adhering to the wall. If it is necessary to close the valve, that is, rotate the valve stem 21 so that the valve core 23 closes the valve port 131. The sleeved sealing sleeve 24 increases the sealing effect. At the same time, the heating wire 32 after being powered on heats the valve body 1, and is insulated by the heat preservation layer 33, so that the gradually cooled and solidified internal solution is heated and melted, avoiding affecting the sealing effect of the valve core 23. And due to thermal expansion and contraction, the subsequent rubber ring 132 is fastened on the valve core 23 and the sealing sleeve 24, further improving the sealing effect.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A leak-proof valve for a polypropylene reactor, comprising a valve body (1), characterized in that: A valve opening and closing structure (2) is installed in the middle of the valve body (1), a heating unit (3) is installed in the cavity of the valve body (1), and polypropylene scraping devices (4) are installed at both the left and right ends of the valve body (1); A valve plate (13) is fixedly connected inside the valve body (1), a valve port (131) is formed in the middle of the valve plate (13), and rubber rings (132) are arranged on both the upper and lower sides of the valve port (131); The polypropylene scraping device (4) includes a mounting ring (41), mounting plates (42) are fixedly connected to the periphery of the mounting ring (41), and a scraping component (43) is rotatably installed in the middle of the mounting ring (41).

2. The leak-proof valve of a polypropylene reactor according to claim 1, characterized in that: A valve cover (11) is arranged outside the valve body (1), connecting flanges (12) are fixedly connected to both the left and right ends of the valve body (1), limiting grooves (14) are formed at both the left and right ends of the valve body (1), and mounting grooves (15) are formed around the limiting grooves (14).

3. The leak-proof valve of a polypropylene reactor according to claim 1, characterized in that: The mounting rings (41) are all embedded in the limiting grooves (14), and the mounting plates (42) are connected to the mounting grooves (15) by bolts.

4. The leak-proof valve of a polypropylene reactor according to claim 1, characterized in that: The valve opening and closing structure (2) includes a valve rod (21), the valve rod (21) is threadedly connected to the valve body (1) and extends upward through the valve cover (11), a handwheel (22) is fixedly connected to the top side of the valve rod (21), a valve core (23) is fixedly connected to the bottom side of the valve rod (21), and a sealing sleeve (24) is sleeved on the outer surface of the valve core (23).

5. The leak-proof valve of a polypropylene reactor according to claim 4, characterized in that: The outer surface of the sealing sleeve (24) contacts the valve port (131), and the upper and lower sides of the sealing sleeve (24) contact the rubber rings (132) arranged up and down.

6. The leak-proof valve of a polypropylene reactor according to claim 1, characterized in that: The heating unit (3) includes a reinforcing plate (31), the reinforcing plate (31) is arranged in the inner cavity of the valve body (1), a heating wire (32) is wound around the reinforcing plate (31), and a heat preservation layer (33) is arranged in the inner cavity of the valve body (1) and is located outside the reinforcing plate (31) and the heating wire (32).

7. The leak-proof valve of a polypropylene reactor according to claim 1, characterized in that: The scraping component (43) includes a rotating shaft (431), the rotating shaft (431) is rotatably arranged in the middle of the mounting ring (41) through a bearing, a sleeve (432) is sleeved on the outer side of the rotating shaft (431), blades (433) are arranged on the outer surface of the sleeve (432), L-shaped plates (434) are arranged on the outer surface of the sleeve (432) in the circumferential direction, and bristles (435) are arranged on one side of each L-shaped plate (434) close to the inner wall of the valve body (1).

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