Corrosion-resistant reaction kettle

Abstract

The utility model relates to the field of chemical equipment, and discloses a corrosion-resistant reaction kettle which comprises a kettle body, the stirrer is arranged in the kettle body and comprises a plurality of hub short blades and a plurality of stirring blades, and the stirring blades and the hub short blades are provided with a plurality of openings in one-to-one correspondence to form mounting openings; the fixing device is arranged at the mounting ports and used for fixedly connecting the hub short blades with the stirring blades, the fixing device comprises a plurality of screws, the screws penetrate through the corresponding mounting ports in the stirring blades and the hub short blades, the two ends of the screws protrude out of the mounting ports, and gaskets are arranged on the portions, on the contact faces of the stirring blades and the hub short blades, of the screws in a sleeving mode; sealing pieces are arranged at the two ends of the screw rod to separate protruding parts at the two ends of the screw rod from the corrosive medium in the kettle body. According to the technical scheme, the screws for connecting the hub short blades and the stirring blades are all sealed, so that the stirring blades are prevented from falling off, and the maintenance operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the field of chemical equipment, in particular to a corrosion-resistant reaction kettle. Background Art

[0002] In the field of chemical engineering, reactors, as a reaction vessel, often need to come into contact with highly corrosive media. For some reactors that require the use of agitators, the connectors between the agitator hub and the agitator blades are easily corroded, causing the agitator blades to fall off. Therefore, the connectors between the agitator hub and the agitator blades need to be treated with anti-corrosion measures.

[0003] CN202289918U discloses an agitator for use in corrosive media. The agitator shaft, hub sleeve, hub short blades, and agitator blade surfaces are all lined with rubber, and the hub short blades and agitator blades are fixed together with bolts. However, there is a gap between the screw and the nut of the bolt, and corrosive media can still enter, causing the nut to loosen and the agitator blade to fall off. In addition, the rubber layer has restrictions on the operating temperature and is inconvenient to repair. Each time it is repaired, the rubber layer needs to be completely scraped off and then restored after the repair is completed. Reinstallation will affect the center of gravity of the agitator. Utility Model Content

[0004] The purpose of the utility model is to overcome the problems in the prior art that there are gaps in the bolts connecting the hub short blade and the stirring blade, corrosive media enters, causing the nut to loosen and the stirring blade to fall off, and the rubber lining makes the maintenance operation complicated.

[0005] In order to achieve the above object, the utility model provides a corrosion-resistant reactor, comprising:

[0006] kettle body;

[0007] The agitator is arranged inside the kettle body and includes a plurality of hub short blades and a plurality of stirring blades. The stirring blades and the hub short blades are provided with a plurality of openings corresponding to each other to form a mounting port;

[0008] A fixing device is arranged at the mounting port and is used to fix the hub short blade and the stirring blade in connection. The fixing device includes multiple screws. The screws pass through the corresponding mounting ports on the stirring blade and the hub short blade and both ends protrude from the mounting ports. A gasket is provided on the screw jacket at the contact surface between the stirring blade and the hub short blade. Seals are provided at both ends of the screw to separate the protruding parts at both ends of the screw from the corrosive medium in the kettle body.

[0009] In some embodiments, the sealing member is a cap nut detachably connected to the screw.

[0010] In some embodiments, the sealing member is a nut fixedly connected to the screw at one end of the screw, and a cap nut detachably connected to the screw at the other end of the screw.

[0011] In some embodiments, the nut and the screw are integrally formed.

[0012] In some embodiments, an anti-falling piece is further provided between the cap nut and the hub short blade and the stirring blade to prevent the cap nut from falling off.

[0013] In some embodiments, the anti-slip component is a thin nut that is sleeved outside the screw and threadably connected to the screw.

[0014] In some embodiments, the agitator also includes a stirring shaft, which is vertically arranged inside the kettle body. The stirring shaft is provided with a hub sleeve outside, and at least two hub short blades are connected around the hub sleeve; the corrosion-resistant reactor also includes a driving device for driving the stirring shaft to rotate.

[0015] In some embodiments, at least two hub sleeves are provided on the stirring shaft at intervals along the axial direction of the stirring shaft.

[0016] In some embodiments, the corrosion-resistant reactor further includes a discharge port provided on the side wall or bottom wall of the reactor body, and a discharge valve is provided at the discharge port.

[0017] In some embodiments, a cylinder is connected to the outside of the discharge port, and a discharge flange is connected to the end of the cylinder away from the discharge port. The discharge valve includes a valve body, and multiple corresponding mounting holes are opened on the discharge flange and the valve body. Fasteners fasten the multiple corresponding mounting holes to fix the valve body to the discharge port.

[0018] In some embodiments, the discharge valve further includes a valve seat protruding outward from the valve body, the length of the valve seat being the same as the length of the cylinder, and the valve seat being able to extend into the interior of the cylinder to occupy a stirring blind area formed by the cylinder.

[0019] Through the above technical solution, the hub short blade and the stirring blade are connected together through a screw. A gasket is provided on the screw jacket at the contact surface between the hub short blade and the stirring blade to prevent corrosive media from entering the contact surface. In addition, the protruding parts at both ends of the screw are also sealed with seals to prevent corrosive media from contacting the screw. The connection between the hub short blade and the stirring blade is sealed as a whole to prevent the connection from being corroded by corrosive media, and the connection is stable, so that the stirring blade will not fall off. In addition, it is easy to install and disassemble, and the operation is simple and convenient during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall diagram of the corrosion-resistant reactor disclosed in the embodiment of the present utility model;

[0021] Figure 2 It is an enlarged view of the fixing device disclosed in the embodiment of the present utility model;

[0022] Figure 3 It is an enlarged view of the discharge port and discharge valve disclosed in the embodiment of the utility model.

[0023] Description of Reference Numerals

[0024] 1. Kettle body; 2. Drive device; 3. Feed inlet; 4. Stirring shaft; 5. Hub sleeve; 6. Hub short blade; 61. Cap nut; 62. Thin nut; 63. Nut; 64. Gasket; 65. Screw; 7. Stirring blade; 8. Discharge port; 81. Cylinder body; 82. Discharge flange; 9. Discharge valve; 91. Valve seat; 92. Valve body; 93. Fastener; 94. Valve stem; 95. Valve disc; 96. Discharge port; 10. Bolt. DETAILED DESCRIPTION

[0025] In this utility model, unless otherwise indicated, directional terms such as "upper," "lower," "left," "right," "inner," and "outer" are used to indicate directions or positional relationships for the sole purpose of facilitating the description of this utility model and simplifying the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0026] In order to solve the problems in the prior art that there is a gap between the screw and the nut of the bolt connecting the hub short blade and the stirring blade, corrosive media will still enter, causing the nut to loosen and the stirring blade to fall off; the adhesive layer has a limit on the operating temperature and is inconvenient for maintenance. Each time the adhesive layer is repaired, it is necessary to scrape off the entire adhesive layer and then restore it after the maintenance is completed. Reinstallation will affect the center of gravity of the stirring, the utility model provides a corrosion-resistant reactor, comprising: a reactor body 1; an agitator, the agitator is arranged inside the reactor body 1, comprising a plurality of hub short blades 6 and a plurality of stirring blades 7, a plurality of openings corresponding to each other are provided on the stirring blades 7 and the hub short blades 6 to form a mounting port; a fixing device, the fixing device is arranged at the mounting port, and is used to fix the hub short blade 6 and the stirring blade 7 to be connected, the fixing device comprises a plurality of screws 65, such as Figure 2As shown, screw 65 passes through corresponding mounting openings on stirring blade 7 and hub short blade 6, with both ends protruding outside of the mounting openings. Gaskets 64 are placed over screw 65 at the contact surface between stirring blade 7 and hub short blade 6. Seals are provided at both ends of screw 65 to isolate the protruding portions of screw 65 from the corrosive medium within kettle body 1. Each component is made of corrosion-resistant metal, such as stainless steel. Corrosion-resistant metal has a corrosion margin, and because screw 65 is thin, it corrodes first. Therefore, screw 65 is sealed as a whole to prevent contact with the corrosive medium. Due to the large contact surface between stirring blade 7 and hub short blade 6, there is a gap at the contact surface between stirring blade 7 and hub short blade 6. Therefore, gaskets are placed over screw 65 to prevent contact with the corrosive medium. The gaskets are made of conventional corrosion-resistant PTFE or PTFE+graphite. The protruding portions of screw 65 are sealed with seals to isolate them from the corrosive medium within kettle body 1. The screw 65 is sealed as a whole and does not come into contact with the corrosive medium, so that the connection between the stirring blade 7 and the hub short blade 6 is more stable, preventing the stirring blade 7 from falling off, and extending the overall service life. At the same time, it is easy to install and disassemble, and the maintenance operation is simple and convenient.

[0027] In some embodiments, the sealing member is a cap nut 61 detachably connected to the screw 65, such as Figure 2 As shown, a removable cap nut 61 is provided at the end of the screw 65, sealing the end of the screw 65 from contact with corrosive media and facilitating installation and removal. In this embodiment, cap nuts 61 are provided at both ends of the screw 65, which are removably connected to the screw 65. The cap nut 61 can be threadedly connected to the screw 65 or sleeved onto the screw 65. Any connection method that can removably connect to the screw 65 and seal the end of the screw 65 is acceptable.

[0028] In some embodiments, the sealing member is a nut 63 fixedly connected to the screw 65 at one end of the screw 65, and a cap nut 61 detachably connected to the screw 65 at the other end of the screw 65. Figure 2 As shown, the nut 63 fixedly connected to the screw 65 seals the protruding portion of the end of the screw 65 to prevent it from contacting the corrosive medium. For easy disassembly and assembly, only one end of the screw 65 uses a fixed nut 63, and the other end uses a detachable cap nut 61.

[0029] In some embodiments, the nut 63 and the screw 65 are integrally formed. Alternatively, the nut 63 and the screw 65 may be welded together.

[0030] In some embodiments, an anti-falling piece is further provided between the cap nut 61 and the hub short blade 6 and the stirring blade 7 to prevent the cap nut 61 from falling off.

[0031] In some embodiments, as Figure 2 As shown, the anti-dropping member is a thin nut 62 that is sleeved outside the screw 65 and threadedly connected to the screw 65. It can also be set to a corrosion-resistant elastic washer, a stop washer, etc. in the prior art to strengthen the connection between the cap nut 61 and the screw 65 to prevent the cap nut 61 from falling off.

[0032] In some embodiments, as Figure 1 As shown, the agitator also includes a stirring shaft 4, which is vertically arranged inside the kettle body 1. The stirring shaft 4 is provided with a hub sleeve 5, and at least two hub short blades 6 are connected around the hub sleeve 5; the corrosion-resistant reactor also includes a driving device 2 for driving the stirring shaft 4 to rotate. Figure 1 The two hub short blades 6 are tiltedly arranged on the hub sleeve 5. The two hub short blades 6 can also be horizontally symmetrically sleeved on the hub sleeve 5, and the tilt angle and number of the hub short blades 6 can be adjusted according to actual conditions.

[0033] In some embodiments, at least two hub sleeves 5 are provided on the stirring shaft 4 at intervals along the axial direction of the stirring shaft 4. The number of hub sleeves 5 can be set according to actual conditions.

[0034] In some embodiments, as Figure 1 As shown, the corrosion-resistant reactor further comprises a discharge port 8 arranged on the side wall or bottom wall of the reactor body 1 , and a discharge valve 9 is provided at the discharge port 8 .

[0035] In some embodiments, as Figure 3 As shown, a cylinder 81 is connected to the outside of the discharge port 8, and a discharge flange 82 is connected to the end of the cylinder 81 away from the discharge port 8. The discharge valve 9 includes a valve body 92. The discharge flange 82 and the valve body 92 are provided with a plurality of mounting holes corresponding to each other. Fasteners 93 fasten the corresponding mounting holes to fix the valve body 92 to the discharge port 8. The fasteners 93 include a gasket between the discharge flange 82 and the valve body 92, and bolts and nuts at the mounting holes.

[0036] In some embodiments, as Figure 3 As shown, the discharge valve 9 also includes a valve seat 91 protruding outward from the valve body 92. The length of the valve seat 91 is the same as that of the cylinder 81. The valve seat 91 can extend into the cylinder 81 to occupy the mixing blind area formed by the cylinder 81. When the agitator is stirring, the agitator in the cylinder 81 cannot stir, forming a mixing blind area, and the material will accumulate there, causing the material to be blocked and unable to be discharged normally. The protruding valve seat 91 occupies the mixing blind area, avoiding this phenomenon. The discharge valve 9 adopts Figure 3During discharge, the valve stem 94 moves upward, and the valve disc 95 also moves upward, allowing the material to enter the discharge port 96, thereby discharging the material. A guide sleeve 97 is provided around the valve stem 94 to guide its movement and stabilize its movement. The guide sleeve 97 comprises a sleeve portion and a stem portion. The sleeve portion is fitted around the valve stem 94, and the other end of the stem portion, spaced circumferentially outside the sleeve, extends to the inner wall of the valve seat 91. Two or more stem portions may be provided. Sealing packing is provided between the valve stem 94 and the guide sleeve 97, and between the valve stem 94 and the valve body 92. A gasket is provided between the valve seat 91 and the valve body 92 to enhance sealing and prevent material leakage. Both the sealing packing and the gasket can be made of PTFE or PTFE + graphite.

[0037] In some embodiments, as Figure 1 As shown, the kettle body 1 is divided into two parts, upper and lower, which are connected together by bolts 10. When inspecting, the bolts 10 are opened for easier operation. In addition, other required components, such as a feed port 3, a pressure gauge, etc., can also be provided on the kettle body 1 as needed.

[0038] While the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple variations and combinations should also be considered as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A corrosion-resistant reactor, characterized in that: include: kettle body (1); A stirrer, the stirrer being arranged inside the kettle body (1), comprising a plurality of hub short blades (6) and a plurality of stirring blades (7), wherein the stirring blades (7) and the hub short blades (6) are provided with a plurality of openings corresponding to each other to form a mounting port; A fixing device is provided at the mounting opening and is used for fixing the hub short blade (6) and the stirring blade (7) in fixed connection. The fixing device comprises a plurality of screws (65). The screws (65) pass through the corresponding mounting openings on the stirring blade (7) and the hub short blade (6) and have both ends protruding outside the mounting openings. A gasket (64) is provided on the outer sleeve of the screw (65) at the contact surface between the stirring blade (7) and the hub short blade (6). Seals are provided at both ends of the screw (65) to separate the protruding parts at both ends of the screw (65) from the corrosive medium in the kettle body (1).

2. The corrosion-resistant reactor according to claim 1, characterized in that: The sealing member is a cap nut (61) detachably connected to the screw (65); or The sealing member is a nut (63) fixedly connected to the screw (65) at one end of the screw (65), and a cap nut (61) detachably connected to the screw (65) at the other end of the screw (65).

3. The corrosion-resistant reactor according to claim 2, characterized in that: The nut (63) and the screw rod (65) are integrally formed.

4. The corrosion-resistant reactor according to claim 2, characterized in that: An anti-falling piece is also provided between the cap nut (61) and the hub short blade (6) and the stirring blade (7) to prevent the cap nut (61) from falling off.

5. The corrosion-resistant reactor according to claim 4, characterized in that: The anti-slip member is a thin nut (62) sleeved outside the screw rod (65) and threadedly connected to the screw rod (65).

6. The corrosion-resistant reactor according to claim 1, characterized in that: The stirrer further comprises a stirring shaft (4), the stirring shaft (4) being vertically arranged inside the kettle body (1), the stirring shaft (4) being provided with a hub sleeve (5) on its outer shell, and at least two hub short blades (6) being connected around the hub sleeve (5); the corrosion-resistant reactor further comprises a driving device (2) for driving the stirring shaft (4) to rotate.

7. The corrosion-resistant reactor according to claim 6, characterized in that: At least two hub sleeves (5) are provided on the stirring shaft (4) at intervals along the axial direction of the stirring shaft (4).

8. The corrosion-resistant reactor according to claim 1, characterized in that: The corrosion-resistant reactor further comprises a discharge port (8) arranged on the side wall or bottom wall of the reactor body (1), and a discharge valve (9) is provided at the discharge port (8).

9. The corrosion-resistant reactor according to claim 8, characterized in that: The outer side of the discharge port (8) is connected to a cylinder (81), and the end of the cylinder (81) away from the discharge port (8) is connected to a discharge flange (82). The discharge valve (9) includes a valve body (92), and a plurality of corresponding mounting holes are provided on the discharge flange (82) and the valve body (92). Fasteners (93) fasten the corresponding plurality of mounting holes to fix the valve body (92) to the discharge port (8).

10. The corrosion-resistant reactor according to claim 9, characterized in that: The discharge valve (9) further comprises a valve seat (91) protruding outward from the valve body (92), wherein the length of the valve seat (91) is the same as the length of the cylinder (81), and the valve seat (91) can extend into the interior of the cylinder (81) to occupy a stirring blind area formed by the cylinder (81).

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