Novel external mixer for chemical production

Abstract

This utility model discloses a novel external mixer for chemical production, comprising a transmission box and a pre-reactor. A first main shaft and a second main shaft are rotatably mounted at both ends of the transmission box. One end of the first main shaft extends out of the transmission box and is connected to a pulley. The first and second main shafts are connected by a transmission shaft. One end of the second main shaft extends out of the transmission box and is connected to a rotating shaft rotatably mounted on the pre-reactor. The portion of the rotating shaft located inside the pre-reactor is equipped with helical blades. Multiple fixed teeth are fixedly mounted on the inner wall of the pre-reactor. Through the design of the eccentric wheel and fixed teeth, the rotating shaft can perform axial reciprocating motion while rotating. During the reciprocating motion, the helical blades on the rotating shaft squeeze and rub against the fixed teeth, allowing the fluorite powder and sulfuric acid to be fully stirred and mixed, promoting the pre-reaction of the fluorite powder and sulfuric acid within the pre-reactor.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, specifically a novel external mixer for chemical production. Background Technology

[0002] The main component of fluorite powder, calcium fluoride, can react with concentrated sulfuric acid to produce hydrogen fluoride. The process involves drying and sieving the fluorite powder, then contacting and mixing it with sulfuric acid for a pre-reaction, and finally feeding it into a converter or rotary reactor for further reaction. To ensure that the fluorite powder and sulfuric acid are fully mixed, this invention proposes a novel external mixer for chemical production. Summary of the Invention

[0003] The purpose of this invention is to propose a novel external mixer for chemical production, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel external mixer for chemical production, comprising a transmission box and a pre-reactor. A first main shaft and a second main shaft are rotatably mounted at both ends of the transmission box. One end of the first main shaft extends out of the transmission box and is connected to a pulley. The first and second main shafts are connected by a transmission shaft. One end of the second main shaft extends out of the transmission box and is connected to a rotating shaft rotatably mounted on the pre-reactor. The portion of the rotating shaft located inside the pre-reactor is equipped with helical blades. Multiple fixed teeth are fixedly mounted on the inner wall of the pre-reactor. Simultaneously, a limiting mechanism for the first main shaft is provided within the transmission box, preventing axial relative sliding between the first main shaft and the transmission box. However, the transmission box does not have a mechanism to restrict axial relative sliding of the second main shaft.

[0005] Preferably, the pulley connected to the first main shaft is connected to a pulley drive mechanism connected to an external reducer via a belt. The reducer is connected to a motor that provides driving force. The reducer can convert the high-speed, low-torque power output from the motor into low-speed, high-torque power, achieving a match between speed and torque. Through the transmission of the belt, the first main shaft, the drive shaft, and the second main shaft, it drives the rotation of the rotating shaft, thereby achieving the stirring and mixing of fluorite powder and sulfuric acid in the pre-reactor.

[0006] Preferably, an eccentric wheel is provided at one end of the first main shaft located inside the transmission box, and a connecting member is provided at one end of the eccentric wheel and the second main shaft, the connecting member being hinged to the transmission shaft. The connecting members are respectively located on the center lines of the eccentric wheel and the second main shaft. The rotation center lines of the first and second main shafts are not on the same straight line, and the center line of the eccentric wheel is not on the same straight line as the center line of the first main shaft. As the first main shaft rotates, the center line of the eccentric wheel rotates around the center line of the first main shaft in a circular motion. This causes the distance between the connecting member on the center line of the eccentric wheel and the connecting member on the second main shaft to change periodically when the first main shaft rotates. This change causes the transmission shaft to pull the second main shaft in a periodic axial reciprocating motion.

[0007] Preferably, the pre-reactor is provided with a powder inlet and an acid inlet.

[0008] Preferably, the transmission box is provided with a plurality of support wheels, which are slidably connected to the first main shaft and the second main shaft respectively.

[0009] Compared with the prior art, the beneficial effects of this utility model are: through the design of the eccentric wheel and the fixed teeth, the rotating shaft can perform axial reciprocating motion while rotating. During the reciprocating motion, the spiral blades on the rotating shaft squeeze and rub against the fixed teeth, so that the fluorite powder and sulfuric acid can be fully stirred and kneaded, and the fluorite powder and sulfuric acid can be pre-reacted in the pre-reactor. Attached Figure Description

[0010] Figure 1 This is a front sectional view of the connection structure between the transmission box and the pre-reactor of this utility model;

[0011] Figure 2 This is a schematic diagram of the rotation trajectory of the first and second main shafts and the rotation center of the eccentric wheel of this utility model.

[0012] In the diagram: 1 Motor, 2 Reducer, 3 Transmission box, 31 First main shaft, 32 Eccentric wheel, 33 Transmission shaft, 34 Second main shaft, 35 Connecting parts, 4 Pre-reactor, 41 Powder inlet, 42 Acid inlet, 43 Fixed teeth, 5 Rotating shaft, 6 Rotation center line of the first main shaft, 7 Rotation center line of the second main shaft, 8 Rotation trajectory line of the center point of the eccentric wheel. Detailed Implementation

[0013] 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.

[0014] Referring to Figure (1), a novel external mixer for chemical production includes a transmission box 3 and a pre-reactor 4. A first main shaft 31 and a second main shaft 34 are rotatably arranged at both ends of the transmission box 3. One end of the first main shaft 31 passes through the transmission box 3 and is connected to a pulley. The first main shaft 31 and the second main shaft 34 are connected by a transmission shaft 33. One end of the second main shaft 34 passes through the transmission box 3 and is connected to a rotating shaft 5 rotatably arranged on the pre-reactor 4. The portion of the rotating shaft 5 located inside the pre-reactor 4 is provided with helical blades. Multiple fixed teeth 43 are fixedly arranged on the inner wall of the pre-reactor 4.

[0015] The pulley connected to the first main shaft 31 is connected to the pulley of an external reducer 2 via a belt drive. The reducer 2 is connected to a motor 1 for providing driving force. An eccentric wheel 32 is provided on one end of the first main shaft 31 inside the transmission box 3. A connecting member 35 is provided on one end of the eccentric wheel 32 and the second main shaft 34. The connecting member 35 is hinged to the transmission shaft 33. The pre-reactor 4 has a powder inlet 41 and an acid inlet 42. Multiple support wheels are provided inside the transmission box 3. The support wheels are slidably connected to the first main shaft 31 and the second main shaft 34, respectively.

[0016] When this device is in use, the power output by the motor 1 drives the first main shaft 31 to rotate through the reducer 2 and belt drive. The eccentric wheel 32 on the first main shaft 31 rotates accordingly and drives the rotating shaft 5 to rotate through the connecting piece 35, the transmission shaft 33, and the second main shaft 34, while making axial reciprocating motion. Fluorite powder and sulfuric acid are poured into the pre-reactor 4 through the powder inlet 41 and the acid inlet 42. When the spiral blades on the rotating shaft 5 rotate with the rotating shaft 5 and make axial reciprocating motion, the fluorite powder and sulfuric acid in the gap between the spiral blades are squeezed and rubbed against the fixed teeth, so that the fluorite powder and sulfuric acid can be fully stirred and kneaded.

[0017] The orientations or positional relationships shown in the accompanying drawings are for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel external mixer for chemical production, comprising a transmission box (3) and a pre-reactor (4), characterized in that: The transmission box (3) is rotatably equipped with a first main shaft (31) and a second main shaft (34) at both ends. One end of the first main shaft (31) passes through the transmission box (3) and is connected to a pulley. The first main shaft (31) and the second main shaft (34) are connected by a transmission shaft (33). One end of the second main shaft (34) passes through the transmission box (3) and is connected to a rotating shaft (5) rotatably mounted on the pre-reactor (4). The part of the rotating shaft (5) located inside the pre-reactor (4) is equipped with helical blades. Multiple fixed teeth (43) are fixedly mounted on the inner wall of the pre-reactor (4).

2. The novel external mixer for chemical production according to claim 1, characterized in that: The pulley connected to the first main shaft (31) is connected to the pulley connected to the external reducer (2) via a belt. The reducer (2) is connected to a motor (1) for providing driving force.

3. The novel external mixer for chemical production according to claim 1, characterized in that: An eccentric wheel (32) is provided on one end of the first main shaft (31) located inside the transmission box (3). A connector (35) is provided on one end of the eccentric wheel (32) and the second main shaft (34). The connector (35) is hinged to the transmission shaft (33).

4. A novel external mixer for chemical production according to claim 1, characterized in that: The pre-reactor (4) is provided with a powder inlet (41) and an acid inlet (42).

5. A novel external mixer for chemical production according to claim 1, characterized in that: The transmission box (3) is provided with multiple support wheels, which are slidably connected to the first main shaft (31) and the second main shaft (34) respectively.

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