A novel bottom-mounted mixer and its use method

Abstract

The present invention relates to a novel bottom-mounted mixer and a method for using the same, comprising: a bracket, a motor, a reducer, an elastic coupling, a coupling, a frame, an upper bearing seat assembly, a lower bearing seat assembly, a double-end mechanical seal, a mechanical seal mounting seat, an agitator A, a stirring shaft and an agitator B. The double-end mechanical seal penetrates into the interior of the slurry and is installed at a position higher than a pipe opening at the bottom of a tank body. The agitator A has a hanging and sweeping function, and the agitator B has low energy consumption. The mechanical seal mounting seat is top-mounted and is convenient to install and disassemble, and can be hoisted as a whole with the entire mixer, thereby greatly improving the efficiency of the mixer and reducing energy consumption.

Description

Technical Field

[0001] The invention relates to a stirring frame device, in particular to a novel bottom-mounted stirring machine. Background Art

[0002] In the prior art, the traditional bottom mixer has poor efficiency, high energy consumption, and the mechanical seal is prone to leakage and has a short lifespan, and is not suitable for occasions containing solid particles, crystals, etc. For large bottom-mounted mixers, it is difficult to design online replacement of the mechanical seal, and it is also cumbersome to replace and disassemble the mechanical seal when it is bottom-mounted. In order to solve this technical problem, a new bottom-mounted mixer is invented with an innovative structural design. Summary of the invention

[0003] The object of the present invention is to provide a novel bottom-mounted mixer and a method of use, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a novel bottom-mounted mixer, comprising: a bracket, a motor, a reducer, an elastic coupling, a coupling, a frame, an upper bearing seat assembly, a lower bearing seat assembly, a double-end mechanical seal, a mechanical seal mounting seat, an agitator a, a stirring shaft and a stirrer b, wherein the motor, the elastic coupling and the reducer are sequentially connected and fixedly mounted on the upper end of the bracket, the stirring shaft and the reducer are connected through a coupling and are located at the upper end of the reducer, the lower bearing seat assembly, the upper bearing seat assembly, the double-end mechanical seal, the agitator a and the b stirrer sequentially pass through the stirring shaft, the lower bearing seat assembly is located at the frame base and is assembled and connected to the frame through a flange a, The upper bearing seat assembly is located at the upper end of the inner side of the frame and is assembled and connected to the frame through the b flange welded to the inner wall of the frame. The lower end plane of the mechanical seal mounting seat is assembled and connected to the upper end plane of the frame. The lower end outer plane of the mechanical seal mounting seat is assembled and connected to the L-shaped flange for supporting the bottom of the reaction tank body so that the mechanical seal penetrates into the bottom of the slurry. The double-end mechanical seal is assembled and connected to the upper end plane of the mechanical seal mounting seat. The double-end mechanical seal includes a sleeve, a spring, A dynamic and static rings, B dynamic and static rings, a sealing ring, a locking nut, a pressure ring, a protective cover, a dynamic ring seat and a mounting flange. The sleeve passes through the stirring shaft, the upper end of the sleeve is fastened to the locking nut, and the lower end of the sleeve is assembled to the dynamic ring seat. The pressure rings are: a pressure ring, b pressure ring, c pressure ring and d pressure ring. The a pressure ring and b pressure ring are respectively located at the upper and lower ends of the A dynamic and static ring, the c pressure ring and d pressure ring are respectively located at the upper and lower ends of the B dynamic and static ring, the a pressure ring is assembled and connected to the shaft sleeve, the d pressure ring is assembled and connected to the dynamic ring seat, the mounting flange is located in the middle of the b pressure ring and the c pressure ring and is connected to the two pressure rings in an assembled manner, the spring is located at the connection between the mounting flange and the b pressure ring and the c pressure ring at both ends, the shaft sleeve, a pressure ring, b pressure ring, c pressure ring, d pressure ring, A dynamic and static ring, B dynamic and static ring and the dynamic ring seat are connected to form a liquid sealing cavity, and except for the upper and lower connection between the A dynamic and static ring and the B dynamic and static ring, the other connections all have Sealing ring, the protective cover is located at the upper end plane of the sleeve, the outer plane of the mounting flange is respectively connected to the flushing water inlet pipe and the flushing water outlet pipe, the flushing water inlet pipe and the flushing water outlet pipe are located inside the mechanical seal mounting seat and pass through the outlet at the upper end of the frame, and can be flushed to prevent solid particles from entering the sealing liquid cavity, the agitator is located at the upper end of the double-end mechanical seal and is detachably connected to the stirring shaft, can rotate with the stirring shaft, and has the function of hanging and sweeping materials, the agitator is composed of blades and a hub, the b agitator is located at the top of the stirring shaft and is detachably connected, the b agitator is composed of blades, and the blades are a spiral curved surface structure with a circular arc, with large circulation power and low energy consumption;The lower bearing seat assembly includes: a sleeve, a skeleton oil seal, a locking nut, a bearing seat, a bearing and a bearing pressure cover, the sleeve passes through the stirring shaft, the bearing is located at the outer end of the sleeve, the bearing seat is connected to the bearing and there is a skeleton oil seal at the connection between the upper end of the bearing seat and the sleeve, the bearing pressure cover is located at the lower end of the bearing and there is a skeleton oil seal at the connection with the sleeve, and the bearing pressure cover and the lower plane of the bearing seat are assembled and connected; the upper bearing seat assembly includes: a sleeve, a bearing pressure cover, a skeleton oil seal, a bearing seat and a bearing, the sleeve passes through the stirring shaft, the bearing is located at the outer end of the sleeve, and the upper and lower ends of the bearing seat are connected by The bearing gland is assembled and connected, and there is a skeleton oil seal at the connection between the bearing gland and the sleeve; the assembly connection of the frame and the mechanical seal mounting seat, the double-end mechanical seal, the upper bearing seat assembly and the lower bearing seat assembly is bolted or threaded; the A dynamic and static rings and B dynamic and static rings of the double-end mechanical seal are alloy or inlaid alloy materials; the agitator and b agitator blades are stainless steel or titanium, and the flushing water inlet pipe and flushing water outlet pipe are made of stainless steel; the bracket of the bottom-mounted mixer is a fixed design or an up and down position lifting design, which can be selected according to maintenance requirements. ;

[0005] A method for using a novel bottom-mounted mixer comprises the following steps: before starting, the protective cover should be removed, and the flushing water should be turned on to ensure that the operation is smooth, the double-end mechanical seal is lubricated, and the flushing water pressure should be higher than the slurry pressure in the tank body, so that the service life of the double-end mechanical seal can be guaranteed; when working, the drive motor is turned on first, and the torque is transmitted through the reducer, thereby driving the agitator and the b agitator to rotate, promoting the mixing of liquids, achieving suspension, crystallization, heat exchange and many other purposes, and when used in conjunction with a guide tube, it can generate a larger axial flow, increase the circulation times, and give full play to the working efficiency.

[0006] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The technical solution provided by the present invention can prevent solid particles from entering the sealing liquid chamber by adding a flushing water inlet pipe and an outlet pipe to the double-end mechanical seal; 2. The technical solution provided by the present invention changes the installation method of the mechanical seal mounting seat to adopt a top-mounted type, which is convenient for installation and disassembly and can be hoisted as a whole with the entire mixer; 3. The technical solution provided by the present invention arranges an L-shaped flange at the bottom of the mechanical seal mounting seat, and the L-shaped flange serves as the bottom support frame of the reaction tank body, which can make the double-end mechanical seal rise into the slurry, and adds an agitator with a sweeping function to prevent materials from gathering outside the machine seal, and the b agitator adopts a large-displacement and high-efficiency axial flow agitator with low energy consumption and high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 The overall structure diagram of a new bottom-mounted mixer;

[0008] Figure 2 Double-end mechanical seal structure diagram;

[0009] Figure 3 Lower bearing seat assembly structure diagram;

[0010] Figure 4 Upper bearing seat assembly structure diagram;

[0011] Figure 5 A is the structure diagram of a mixer;

[0012] Description of the accompanying drawings: 1- bracket; 2- motor; 3- elastic coupling; 4- reducer; 5- coupling; 6- lower bearing seat assembly; 7- frame; 8- upper bearing seat assembly; 9- b flange; 10- flushing water outlet pipe; 11- flushing water inlet pipe; 12- double-end mechanical seal; 13- mechanical seal mounting seat; 14- a stirrer; 15- stirring shaft; 16- b stirrer; 17- L-type flange; 18- a flange; 601- bushing; 602- skeleton oil seal; 603- locking nut; 604- bearing seat; 605- bearing; 606- bearing cover; 801- bushing; 802- bearing cover; 803- skeleton oil seal; 804- bearing seat; 805- bearing; 1201- bushing; 1202- Spring; 1203-A dynamic and static rings; 1204-sealing ring; 1205-locking nut; 1206-1-a pressure ring; 1206-2-b pressure ring; 1206-3-c pressure ring; 1206-4-d pressure ring; 1207-protective cover; 1208-B dynamic and static rings; 1209-mounting flange; 1210-dynamic ring seat. DETAILED DESCRIPTION

[0013] 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. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a novel bottom-mounted mixer, comprising: a bracket 1, a motor 2, a reducer 4, an elastic coupling 3, a coupling 5, a frame 7, an upper bearing seat assembly 8, a lower bearing seat assembly 6, a double-end mechanical seal 12, a mechanical seal mounting seat 13, an agitator a 14, an agitator shaft 15 and a b agitator 16, wherein the motor 2, the elastic coupling 3 and the reducer 4 are sequentially connected and fixedly mounted on the upper end of the bracket 1, the agitator shaft 15 and the reducer 4 are connected through the coupling 5 and are located at the upper end of the reducer 4, the lower bearing seat assembly 6, the upper bearing seat assembly 8, the double-end mechanical seal 12, the agitator a 14 and the b agitator 16 sequentially pass through the agitator shaft 15, the lower bearing seat assembly 6 is located at the base of the frame 7 and is assembled and connected to the frame 7 through a flange 18, and the upper bearing seat assembly 8 is located at the upper inner end of the frame 7 and is assembled and connected to the frame 7 by b flange 9 welded to the inner wall of the frame 7. The lower end plane of the mechanical seal mounting seat 13 is assembled and connected to the upper end plane of the frame 7. The lower end outer plane of the mechanical seal mounting seat 13 is assembled and connected to the L-shaped flange 17, which is used to support the bottom of the reaction tank body so that the mechanical seal penetrates into the bottom of the slurry. The double-end mechanical seal 12 is assembled and connected to the upper end plane of the mechanical seal mounting seat 13. The double-end mechanical seal 12 includes a sleeve 1201, a spring 1202, A dynamic and static rings 1203, B dynamic and static rings 1208, a sealing ring 1204, a locking nut 1205, a pressure ring 1206, a protective cover 1207, a dynamic ring seat 1210 and a mounting flange 1209. The shaft sleeve 1201 passes through the stirring shaft 15, the upper end of the shaft sleeve 1201 is fastened to the locking nut 1205, the lower end of the shaft sleeve 1201 is assembled and connected to the dynamic ring seat 1210, the pressure ring 1206 is: a pressure ring 1206-1, b pressure ring 1206-2, c pressure ring 1206-3 and d pressure ring 1206-4, the a pressure ring 1206-1 and b pressure ring 1206-2 are respectively located at the upper and lower ends of the A dynamic and static ring 1203, the c pressure ring 1206-3 and d pressure ring 1206-4 are respectively located at the upper and lower ends of the B dynamic and static ring 1208, the a pressure ring 1206-1 is assembled and connected to the shaft sleeve 1201, the d pressure ring 1206-4 is assembled and connected to the dynamic ring seat 1210, The mounting flange 1209 is located between the b pressure ring 1206-2 and the c pressure ring 1206-3 and is connected to the two pressure rings by assembly connection. The spring 1202 is located at the connection between the mounting flange and the two ends of the b pressure ring 1206-2 and the c pressure ring 1206-3. The shaft sleeve 1201, the a pressure ring 1206-1, the b pressure ring 1206-2, the c pressure ring 1206-3, the d pressure ring 1206-4, the A dynamic and static ring 1203, the B dynamic and static ring 1208 and the dynamic ring seat 1210 are connected to form a sealing liquid cavity. Except for the upper and lower connection between the A dynamic and static ring 1203 and the B dynamic and static ring 1208, the other connection points all have sealing rings 1204. The protective cover 1207 is located on the upper end plane of the shaft sleeve 1201.The outer plane of the mounting flange 1209 is respectively connected to the flushing water inlet pipe 11 and the flushing water outlet pipe 10, which are located inside the mechanical seal mounting seat 13 and pass through the outlet at the upper end of the frame 7, and can be flushed to prevent solid particles from entering the sealing liquid cavity. The agitator 14 is located at the upper end of the double-end mechanical seal 12 and is detachably connected to the stirring shaft 15, and can rotate with the stirring shaft 15, and has the function of hanging and sweeping materials. The agitator 14 is composed of a blade 1401 and a hub 1402. The b agitator 16 is located at the top of the stirring shaft 15 and is The b stirrer 16 is composed of a paddle 1601, and the paddle 1601 is a spiral curved surface structure with a circular arc, with large circulation power and low energy consumption; wherein the lower bearing seat assembly 6 includes: a sleeve 601, a skeleton oil seal 602, a locking nut 603, a bearing seat 604, a bearing 605 and a bearing pressure cover 606, the sleeve 601 passes through the stirring shaft 15, the bearing 605 is located at the outer end of the sleeve 601, the bearing seat 604 and the bearing 605 are connected, and there is a skeleton oil seal 602 at the connection between the upper end of the bearing seat 604 and the sleeve 601, and the bearing pressure cover 606 is located at There is a skeleton oil seal 602 at the lower end of the bearing 605 and the connection with the sleeve 601, and the bearing cover 606 and the lower plane of the bearing seat 604 are assembled and connected; wherein the upper bearing seat assembly 8 includes: a sleeve 801, a bearing cover 802, a skeleton oil seal 803, a bearing seat 804 and a bearing 805, the sleeve 801 passes through the stirring shaft 15, the bearing 805 is located at the outer end of the sleeve 801, the upper and lower ends of the bearing seat 804 are assembled and connected by the bearing cover 802, and there is a skeleton oil seal 803 at the connection between the bearing cover 802 and the sleeve 801; wherein the frame 7, the mechanical seal The assembly connection of the mounting seat 13, the double-end mechanical seal 12, the upper bearing seat assembly 8 and the lower bearing seat assembly 6 is bolted or threaded; the A dynamic and static ring 1203 and the B dynamic and static ring 1208 of the double-end mechanical seal 12 are alloy or inlaid alloy materials; the blades 1401 of the agitator 4 and the blades 1601 of the b agitator 16 are stainless steel or titanium, and the flushing water inlet pipe 11 and the flushing water outlet pipe 10 are made of stainless steel; the bracket 1 of the bottom-mounted mixer is a fixed design or an up and down position lifting design, which is selected according to the maintenance requirements.

[0014] Working principle: the protective cover 1207 should be removed before opening, and the flushing water should be turned on to ensure smooth operation. The double-end mechanical seal 12 is lubricated, and the flushing water pressure should be higher than the slurry pressure in the tank body. The service life of the double-end mechanical seal 12 can be guaranteed. When working, first turn on the drive motor 2, and transmit the torque through the reducer 4, so as to drive the agitator and the b agitator to rotate, promote the mixing of liquids, and achieve suspension, crystallization, heat exchange and many other purposes. When used with the guide tube, it can generate a larger axial flow, increase the circulation times, and give full play to the working efficiency.

[0015] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0016] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the appended claims and their equivalents.

Claims

1. A new bottom-mounted mixer, characterized in that: include: A bracket (1), a motor (2), a reducer (4), an elastic coupling (3), a coupling (5), a frame (7), an upper bearing seat assembly (8), a lower bearing seat assembly (6), a double-end mechanical seal (12), a mechanical seal mounting seat (13), an agitator (a) (14), an agitator shaft (15), and an agitator (b) (16), wherein the motor (2), the elastic coupling (3), and the reducer (4) are sequentially connected and fixedly mounted on the upper end of the bracket (1), the agitator shaft (15) and the reducer (4) are connected via the coupling (5) and are located at the upper end of the reducer (4), and the lower bearing seat assembly (6), the upper bearing seat assembly (8), the double-end mechanical seal (12), the agitator (a) (14), and the agitator (b) (16 ... sequentially connected and fixedly mounted on the upper end of the bracket (1), the agitator shaft (15) and the reducer (4) are sequentially connected and fixedly mounted on the upper end of the bracket (1), the agitator shaft (15) and the reducer (4) are sequentially connected and fixedly mounted on the upper end of the bracket (1), the agitator shaft (15) and the reducer (4) are sequentially connected and fixedly mounted on the upper end of the bracket (1), the agitator shaft (15) and the reducer (4) are sequentially connected and fixedly mounted on the upper The lower bearing seat assembly (6) is located at the base of the frame (7) and is assembled and connected to the frame (7) through a flange (18). The upper bearing seat assembly (8) is located at the upper end of the inner side of the frame (7) and is assembled and connected to the frame (7) through a flange (9) welded to the inner wall of the frame (7). The lower end plane of the mechanical seal mounting seat (13) is assembled and connected to the upper end plane of the frame (7). The lower end outer plane of the mechanical seal mounting seat (13) is assembled and connected to the L-shaped flange (17). The double-end mechanical seal (12) is assembled and connected to the upper end plane of the mechanical seal mounting seat (13). The double-end mechanical seal (12) includes a shaft sleeve (1201), a spring (1202), a dynamic and static ring (12 03), B dynamic and static rings (1208), sealing rings (1204), locking nuts (1205), pressure rings (1206), protective covers (1207), dynamic ring seats (1210) and mounting flanges (1209), the shaft sleeve (1201) passes through the stirring shaft (15), the upper end of the shaft sleeve (1201) is fastened to the locking nuts (1205), the lower end of the shaft sleeve (1201) is assembled and connected to the dynamic ring seat (1210), the pressure rings (1206) are: a pressure ring (1206-1), b pressure ring (1206-2), c pressure ring (1206-3) and d pressure ring (1206-4), the a pressure ring (1206-1) and b pressure ring (1206-2) are respectively located at the A dynamic ring The upper and lower ends of the static ring (1203), the c pressure ring (1206-3) and the d pressure ring (1206-4) are respectively located at the upper and lower ends of the B dynamic and static ring (1208), the a pressure ring (1206-1) and the shaft sleeve (1201) are assembled and connected, the d pressure ring (1206-4) and the dynamic ring seat (1210) are assembled and connected, the mounting flange (1209) is located in the middle of the b pressure ring (1206-2) and the c pressure ring (1206-3) and is connected to the b pressure ring (1206-2) and the c pressure ring (1206-3) in an assembled connection manner, and the spring (1202) is located at the connection between the mounting flange (1209) and the b pressure ring (1206-2) and the c pressure ring (1206-3) at both ends.The shaft sleeve (1201), a pressure ring (1206-1), b pressure ring (1206-2), c pressure ring (1206-3), d pressure ring (1206-4), A dynamic and static ring (1203), B dynamic and static ring (1208) and dynamic ring seat (1210) are connected to form a liquid sealing chamber, and except for the upper and lower connections between the A dynamic and static ring (1203) and the B dynamic and static ring (1208), the other connections are all provided with sealing rings (1204), the protective cover (1207) is located on the upper end plane of the shaft sleeve (1201), and the outer plane of the mounting flange (1209) is respectively connected to the flushing water inlet pipe (11) and the flushing water inlet pipe (1210). outlet pipe (10), the flushing water inlet pipe (11) and the flushing water outlet pipe (10) are located inside the mechanical seal mounting seat (13) and pass through the upper outlet of the frame (7), the agitator (14) is located at the upper end of the double-end mechanical seal (12) and is detachably connected to the stirring shaft (15), the agitator (14) is composed of a blade (1401) and a hub (1402), the b stirrer (16) is located at the top of the stirring shaft (15) and is detachably connected, the b stirrer (16) is composed of a blade (1601), and the blade (1601) is a spiral curved surface structure with a circular arc.

2. A novel bottom-mounted mixer according to claim 1, characterized in that: The lower bearing seat assembly (6) comprises: a shaft sleeve (601), a skeleton oil seal (602), a locking nut (603), a bearing seat (604), a bearing (605) and a bearing pressure cover (606); the shaft sleeve (601) passes through the stirring shaft (15); the bearing (605) is located at the outer end of the shaft sleeve (601); the bearing seat (604) and the bearing (605) are connected, and a skeleton oil seal (602) is provided at the connection between the upper end of the bearing seat (604) and the shaft sleeve (601); the bearing pressure cover (606) is located at the lower end of the bearing (605) and a skeleton oil seal (602) is provided at the connection between the bearing seat (604) and the shaft sleeve (601); and the bearing pressure cover (606) and the lower plane of the bearing seat (604) are assembled and connected.

3. A novel bottom-mounted mixer according to claim 1, characterized in that: The upper bearing seat assembly (8) comprises: a shaft sleeve (801), a bearing pressure cover (802), a skeleton oil seal (803), a bearing seat (804) and a bearing (805); the shaft sleeve (801) passes through the stirring shaft (15); the bearing (805) is located at the outer end of the shaft sleeve (801); the upper and lower ends of the bearing seat (804) are assembled and connected through the bearing pressure cover (802); and a skeleton oil seal (803) is present at the connection between the bearing pressure cover (802) and the shaft sleeve (801).

4. A novel bottom-mounted mixer according to claim 1, characterized in that: The frame (7), the mechanical seal mounting seat (13), the double-end mechanical seal (12), the upper bearing seat assembly (8) and the lower bearing seat assembly (6) are assembled and connected in a bolted or threaded manner.

5. A novel bottom-mounted mixer according to claim 1, characterized in that: The A dynamic and static ring (1203) and the B dynamic and static ring (1208) of the double-end mechanical seal (12) are made of alloy or inlaid alloy material.

6. A novel bottom-mounted mixer according to claim 1, characterized in that: The blades (1401) of the stirrer a (14) and the blades (1601) of the stirrer b (16) are made of stainless steel or titanium, and the flushing water inlet pipe (11) and the flushing water outlet pipe (10) are made of stainless steel.

7. A novel bottom-mounted mixer according to claim 1, characterized in that: The bracket (1) of the bottom-mounted mixer is fixed or can be lifted up and down.

8. A method for using a novel bottom-mounted mixer, characterized in that: Using the novel bottom-mounted mixer as described in any one of claims 1 to 7, the method comprises the following steps: S1. Before opening, the protective cover (1207) should be removed and the flushing water should be turned on to ensure that the operation is free of jamming and the double-end mechanical seal (12) is lubricated. The flushing water pressure should be higher than the slurry pressure in the tank body, so that the service life of the double-end mechanical seal (12) can be guaranteed. S2. When working, the drive motor (2) is first turned on, and the torque is transmitted through the reducer (4), thereby driving the agitator a (14) and the agitator b (16) to rotate, promoting liquid mixing, and achieving the purposes of suspension, crystallization, heat exchange, etc. When used in conjunction with the guide tube, a larger axial flow can be generated, the circulation times are increased, and the working efficiency can be fully exerted.

Images