Mixing and stirring device for formaldehyde production

Abstract

The utility model relates to the technical field of formaldehyde production, in particular to a mixing and stirring device for formaldehyde production, which comprises a stirring tank, the left side of the upper surface of the stirring tank is communicated with a feeding hopper, and a mixing mechanism for mixing water and a formaldehyde solution is mounted in the stirring tank. When the device works, a formaldehyde solution and purified water are poured into the stirring tank along the feeding hopper, the motor drives the connecting shaft, the driving bevel gear, the driven bevel gear, the stirring shaft and the stirring rod to rotate to mix and stir the solution, and one end of the piston rod of the electric cylinder extends to drive the suction hood to move to the position over the feeding hopper. Formaldehyde gas volatilized in the mixing and stirring process flows upwards along a feeding hopper, suction force is generated through work of an exhaust fan, the formaldehyde gas is sucked into a purification box along a suction hood and a telescopic hose, formaldehyde molecules are effectively adsorbed by an activated carbon plate, and the situation that the body health of workers is affected by the volatilized formaldehyde is avoided; the safety of formaldehyde production work is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde production, in particular to a mixing and stirring device for formaldehyde production. Background Art

[0002] The concentration of formaldehyde in aqueous solution can reach up to 55%, which is called formaldehyde water, commonly known as formalin. It can be produced by dehydrogenation or oxidation of methanol under the catalysis of metals such as silver and copper, or it can be separated from the oxidation products of hydrocarbons. It can be used as a raw material for phenolic resin, urea-formaldehyde resin, vinylon, hexamethylenetetramine, pentaerythritol, dyes, pesticides, disinfectants, etc.

[0003] When producing formaldehyde products of different purities, the distilled formaldehyde solution needs to be mixed with pure water. During the mixing process, the solution needs to be continuously mixed and stirred. However, the formaldehyde in the formaldehyde solution will evaporate into the air, affecting the health of workers and affecting production safety. Therefore, a mixing and stirring device for formaldehyde production is proposed. Utility Model Content

[0004] The purpose of the present invention is to provide a mixing and stirring device for formaldehyde production to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a mixing and stirring device for formaldehyde production, comprising a stirring tank, wherein the upper surface of the stirring tank is connected to an upper hopper on the left side, a mixing mechanism for mixing water and formaldehyde solution is installed inside the stirring tank, and a purification mechanism for purifying formaldehyde gas is installed on the upper surface of the stirring tank;

[0006] The mixing mechanism includes a stirring shaft, the inner side wall of the stirring tank is rotatably connected to the stirring shaft through a bearing, the outer side wall of the stirring shaft is evenly welded with a stirring rod, the top of the right side wall of the stirring tank is fixedly connected to a support plate, the upper surface of the support plate is mounted with a motor, one end of the output shaft of the motor extends into the interior of the stirring tank and is fixedly connected to a connecting shaft, the left end of the connecting shaft is fixedly connected to a driving bevel gear, the top of the outer side wall of the stirring shaft is fixedly connected to a driven bevel gear, and the driven bevel gear is meshed with the driving bevel gear;

[0007] The purification mechanism includes a fixed seat, the top of the rear surface of the mixing tank is fixedly connected to the fixed seat, the upper surface of the fixed seat is installed with an electric cylinder, one end of the piston rod of the electric cylinder is fixedly connected to the air suction hood, the middle part of the upper surface of the mixing tank is fixedly connected with a purification box, an activated carbon plate is provided inside the purification box, the top of the left side wall of the purification box is connected with an air intake pipe, the top of the air intake pipe and the upper surface of the air suction hood are connected with a telescopic hose, an exhaust fan is installed on the right side of the upper surface of the mixing tank, the air inlet of the exhaust fan is connected to the right side wall of the purification box through a pipe, and the air outlet of the exhaust fan is connected with an exhaust pipe.

[0008] As a further preferred embodiment of the present technical solution: a box cover is provided on the top of the purification box, two fixed parts of locks are symmetrically installed on the top of the outer wall of the purification box, and two movable parts of locks are symmetrically installed on the outer wall of the box cover. The purification box and the box cover are connected by the locks, and a handle is fixedly connected to the upper surface of the box cover.

[0009] As a further preferred embodiment of the present technical solution: limiting grooves are provided on both sides of the inner side wall of the purification box.

[0010] As a further preferred embodiment of the present technical solution: support rods are evenly welded on the lower surface of the stirring tank.

[0011] As a further preferred embodiment of the present technical solution: a transparent window is provided on the left side of the front surface of the stirring tank.

[0012] As a further preferred embodiment of the present technical solution: the bottom of the front surface of the stirring tank is connected to a liquid outlet pipe, and the outer side wall of the liquid outlet pipe is installed with a liquid outlet valve.

[0013] As a further preferred embodiment of the present technical solution: a control board is installed on the side of the outer wall of the mixing tank close to the support plate, and the electrical output end of the control board is electrically connected to the electrical input end of the motor, the electric cylinder and the exhaust fan through wires.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When the utility model is in operation, formaldehyde solution and pure water are poured into the stirring tank along the upper hopper, and the connecting shaft, the active bevel gear, the driven bevel gear, the stirring shaft and the stirring rod are driven to rotate by the motor to mix and stir the solution, and the suction hood is driven to move to the top of the upper hopper by extending one end of the piston rod of the electric cylinder. Formaldehyde gas volatilized during the mixing and stirring process will flow upward along the upper hopper, and suction is generated by the operation of the exhaust fan to draw the formaldehyde gas into the purification box along the suction hood and the telescopic hose. The activated carbon plate effectively absorbs formaldehyde molecules, avoids the volatilized formaldehyde from affecting the health of the staff, and improves the safety of formaldehyde production work. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a rear view structural diagram of the utility model;

[0018] Figure 3 This is a schematic cross-sectional view of a mixing tank from a certain perspective in the present invention;

[0019] Figure 4 This is a schematic cross-sectional view of the mixing tank from another perspective in the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the stirring tank and the upper hopper in the utility model;

[0021] Figure 6 For this utility model Figure 5 A magnified view of the structure of area A.

[0022] In the picture:

[0023] 1. Mixing tank; 2. Hopper; 3. Mixing mechanism; 4. Purification mechanism; 5. Support rod; 6. Transparent window; 7. Liquid outlet pipe; 8. Liquid outlet valve; 9. Control panel;

[0024] 31. Stirring shaft; 32. Stirring rod; 33. Support plate; 34. Motor; 35. Connecting shaft; 36. Driving bevel gear; 37. Driven bevel gear;

[0025] 41. Fixing seat; 42. Electric cylinder; 43. Suction hood; 44. Purification box; 45. Activated carbon plate; 46. Box cover; 47. Inlet pipe; 48. Telescopic hose; 49. Exhaust fan; 410. Exhaust pipe; 411. Handle; 412. Lock; 413. Limiting groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "installed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] See also Figure 1-6 The utility model provides a technical solution: a mixing and stirring device for formaldehyde production, comprising a mixing tank 1, an upper hopper 2 is connected to the left side of the upper surface of the mixing tank 1, a mixing mechanism 3 for mixing water and formaldehyde solution is installed inside the mixing tank 1, and a purification mechanism 4 for purifying formaldehyde gas is installed on the upper surface of the mixing tank 1;

[0029] The mixing mechanism 3 includes a stirring shaft 31. The inner wall of the stirring tank 1 is rotatably connected to the stirring shaft 31 through a bearing. A stirring rod 32 is evenly welded to the outer wall of the stirring shaft 31. A support plate 33 is fixedly connected to the top of the right wall of the stirring tank 1. A motor 34 is installed on the upper surface of the support plate 33. One end of the output shaft of the motor 34 extends into the interior of the stirring tank 1 and is fixedly connected to a connecting shaft 35. The left end of the connecting shaft 35 is fixedly connected to a driving bevel gear 36. The top of the outer wall of the stirring shaft 31 is fixedly connected to a driven bevel gear 37. The driven bevel gear 37 is meshed with the driving bevel gear 36.

[0030] The purification mechanism 4 includes a fixed base 41, which is fixedly connected to the top of the rear surface of the mixing tank 1. An electric cylinder 42 is installed on the upper surface of the fixed base 41, and one end of the piston rod of the electric cylinder 42 is fixedly connected to the air suction hood 43. A purification box 44 is fixedly connected to the middle part of the upper surface of the mixing tank 1. An activated carbon plate 45 is provided inside the purification box 44. An air intake pipe 47 is connected to the top of the left wall of the purification box 44, and a telescopic hose 48 is connected between the top of the air intake pipe 47 and the upper surface of the air suction hood 43. An exhaust fan 49 is installed on the right side of the upper surface of the mixing tank 1. The air inlet of the exhaust fan 49 is connected to the right side wall of the purification box 44 through a pipeline, and the air outlet of the exhaust fan 49 is connected to the exhaust pipe 410.

[0031] Under the above setting, the formaldehyde solution and pure water are poured into the stirring tank 1 along the upper hopper 2, and the motor 34 drives the connecting shaft 35, the active bevel gear 36, the driven bevel gear 37, the stirring shaft 31 and the stirring rod 32 to rotate to mix and stir the solution. The suction hood 43 is driven to move to the top of the upper hopper 2 by extending one end of the piston rod of the electric cylinder 42. The formaldehyde gas volatilized during the mixing and stirring process will flow upward along the upper hopper 2, and the suction force is generated by the operation of the exhaust fan 49 to absorb the formaldehyde gas along the suction hood 43 and the telescopic hose 48 into the purification box 44. The activated carbon plate 45 effectively adsorbs formaldehyde molecules to prevent the volatilized formaldehyde from affecting the health of the staff.

[0032] In this example, specifically: a box cover 46 is provided on the top of the purification box 44, and two fixed parts of the lock buckles 412 are symmetrically installed on the top of the outer wall of the purification box 44, and two movable parts of the lock buckles 412 are symmetrically installed on the outer wall of the box cover 46. The purification box 44 and the box cover 46 are connected by the lock buckle 412, and the upper surface of the box cover 46 is fixedly connected with a handle 411; the box cover 46 can be locked with the help of the lock buckle 412, and the setting of the handle 411 facilitates the movement of the box cover 46. The lock buckle 412 is opened to remove the box cover 46 and the activated carbon plate 45 is replaced regularly to ensure the adsorption effect.

[0033] In this embodiment, specifically: both sides of the inner side wall of the purification box 44 are provided with limiting grooves 413 ; the setting of the limiting grooves 413 prevents the activated carbon plate 45 from accidentally shifting in the purification box 44 .

[0034] In this embodiment, specifically, support rods 5 are evenly welded on the lower surface of the mixing tank 1 to facilitate supporting the mixing tank 1 .

[0035] In this embodiment, specifically: a transparent window 6 is provided on the left side of the front surface of the mixing tank 1 to facilitate observation of the interior of the mixing tank 1 .

[0036] In this example, specifically: a liquid outlet pipe 7 is connected to the bottom of the front surface of the stirring tank 1, and a liquid outlet valve 8 is installed on the outer wall of the liquid outlet pipe 7; opening the liquid outlet valve 8 allows the prepared formaldehyde solution to flow out.

[0037] In this example, specifically: a control board 9 is installed on the side of the outer wall of the mixing tank 1 close to the support plate 33, and the electrical output end of the control board 9 is electrically connected to the electrical input end of the motor 34, the electric cylinder 42 and the exhaust fan 49 through wires, so as to facilitate the control of the working status of each electrical equipment.

[0038] The working principle of the present utility model is as follows: formaldehyde solution and pure water are poured into the stirring tank 1 along the upper hopper 2, and the connecting shaft 35, the active bevel gear 36, the driven bevel gear 37, the stirring shaft 31 and the stirring rod 32 are driven to rotate by the motor 34 to mix and stir the solution, and the suction hood 43 is driven to move to the top of the upper hopper 2 by extending one end of the piston rod of the electric cylinder 42. The formaldehyde gas volatilized during the mixing and stirring process will flow upward along the upper hopper 2, and the suction force is generated by the operation of the exhaust fan 49 to absorb the formaldehyde gas along the suction hood 43 and the telescopic hose 48 into the purification box 44. The activated carbon plate 45 effectively adsorbs formaldehyde molecules to prevent the volatilized formaldehyde from affecting the health of the staff, thereby improving the safety of formaldehyde production work.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mixing and stirring device for formaldehyde production, characterized in that: The invention comprises a stirring tank (1), wherein the upper surface of the stirring tank (1) is connected to a hopper (2) on the left side, a mixing mechanism (3) for mixing water and formaldehyde solution is installed inside the stirring tank (1), and a purification mechanism (4) for purifying formaldehyde gas is installed on the upper surface of the stirring tank (1); The mixing mechanism (3) comprises a stirring shaft (31), the inner side wall of the stirring tank (1) is rotatably connected to the stirring shaft (31) through a bearing, the outer side wall of the stirring shaft (31) is uniformly welded with a stirring rod (32), the top of the right side wall of the stirring tank (1) is fixedly connected to a support plate (33), the upper surface of the support plate (33) is mounted with a motor (34), one end of the output shaft of the motor (34) extends into the interior of the stirring tank (1) and is fixedly connected to a connecting shaft (35), the left end of the connecting shaft (35) is fixedly connected to a driving bevel gear (36), the top of the outer side wall of the stirring shaft (31) is fixedly connected to a driven bevel gear (37), and the driven bevel gear (37) is meshed and linked with the driving bevel gear (36); The purification mechanism (4) comprises a fixed seat (41), the top of the rear surface of the mixing tank (1) is fixedly connected to the fixed seat (41), the upper surface of the fixed seat (41) is installed with an electric cylinder (42), one end of the piston rod of the electric cylinder (42) is fixedly connected to an air suction hood (43), the middle part of the upper surface of the mixing tank (1) is fixedly connected with a purification box (44), an activated carbon plate (45) is provided inside the purification box (44), the top of the left side wall of the purification box (44) is connected with an air intake pipe (47), the top end of the air intake pipe (47) and the upper surface of the air suction hood (43) are connected with a telescopic hose (48), an exhaust fan (49) is installed on the right side of the upper surface of the mixing tank (1), the air inlet of the exhaust fan (49) is connected to the right side wall of the purification box (44) through a pipeline, and the air outlet of the exhaust fan (49) is connected with an exhaust pipe (410).

2. The mixing and stirring device for formaldehyde production according to claim 1, characterized in that: The top of the purification box (44) is provided with a box cover (46), the top of the outer side wall of the purification box (44) is symmetrically mounted with two fixed parts of lock buckles (412), the outer side wall of the box cover (46) is symmetrically mounted with two movable parts of lock buckles (412), the purification box (44) and the box cover (46) are connected via the lock buckles (412), and the upper surface of the box cover (46) is fixedly connected with a handle (411).

3. The mixing and stirring device for formaldehyde production according to claim 2, characterized in that: Limiting grooves (413) are provided on both sides of the inner side wall of the purification box (44).

4. The mixing and stirring device for formaldehyde production according to claim 3, characterized in that: Support rods (5) are evenly welded to the lower surface of the stirring tank (1).

5. The mixing and stirring device for formaldehyde production according to claim 4, characterized in that: A transparent window (6) is provided on the left side of the front surface of the stirring tank (1).

6. The mixing and stirring device for formaldehyde production according to claim 5, characterized in that: The bottom of the front surface of the stirring tank (1) is connected to a liquid outlet pipe (7), and a liquid outlet valve (8) is installed on the outer side wall of the liquid outlet pipe (7).

7. The mixing and stirring device for formaldehyde production according to claim 6, characterized in that: A control panel (9) is installed on a side of the outer wall of the mixing tank (1) close to the support plate (33), and the electrical output end of the control panel (9) is electrically connected to the electrical input ends of the motor (34), the electric cylinder (42), and the exhaust fan (49) through wires.

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