A constant temperature stirring tank for producing methyl methoxypropionate

Abstract

This utility model discloses a constant-temperature stirred tank for the production of methyl methoxypropionate, relating to the field of methyl methoxypropionate production technology. The utility model includes a tank body and a tank cover. A stirring assembly is disposed at the center of the tank body. The stirring assembly includes a mounting frame fixedly connected to the center of the top of the tank cover, and an upper rotating shaft is rotatably connected to the mounting frame. This utility model uses the upper and lower rotating shafts to drive the upper and lower stirring blades to rotate in opposite directions, effectively reducing the mixing dead zone within the tank and solving the problem of large mixing dead zones hindering uniform mixing of raw materials. A fixed frame is used to install the mounting frame and heat exchange tubes around the inside of the tank. The heat exchange tubes and fins are used to heat or cool the raw materials within the tank. Simultaneously, the mounting frame and heat exchange tubes act as baffles, increasing the contact area between the raw materials and the heat exchange tubes and eliminating vortices, thus solving the problem of maintaining a constant temperature within the tank in existing systems.

Description

Technical Field

[0001] This utility model belongs to the field of methyl methoxypropionate production technology, and in particular relates to a constant temperature stirring tank for the production of methyl methoxypropionate. Background Technology

[0002] Methyl methoxypropionate, also known as methyl β-methoxypropionate, is a colorless and transparent liquid. Its industrial synthesis uses methanol, sodium hydroxide, methyl acrylate, etc. as raw materials. After reaction at 65°C, it is purified by distillation. It is mainly used as a pharmaceutical intermediate and applied in the field of fine chemicals. The constant temperature stirred tank is one of the most common reaction equipment in the production and processing of methyl methoxypropionate. The existing authorized announcement document CN219816163U discloses an overflow-proof constant temperature mixing tank, including a tank body and a ventilation assembly. The tank body is provided with a feed inlet on the top, and a tank cover is provided above the feed inlet. The ventilation assembly is provided above the tank cover. The ventilation assembly includes a ventilation port, an ultrafine filter, a ventilation cover, hooks, and a fixing block. The ultrafine filter is fixed inside the ventilation port, and a ventilation cover is provided above the ventilation port. Hooks are fixed on both sides of the ventilation cover. A sealing ring is provided outside the feed inlet. However, it still has the following drawbacks in practical use: 1. The constant temperature stirring tank mentioned above has a heating ceramic inner wall inside the tank body, and heat dissipation fins are provided on the outside of the heating ceramic inner wall. The heating ceramic inner wall heats the raw materials inside the tank, and the heat dissipation fins dissipate heat from the inside of the tank body, ensuring that the inside of the tank body is in a constant temperature state. However, during use, the heating ceramic inner wall and heat dissipation fins do not contact the raw materials inside the tank body evenly, resulting in uneven heating or heat dissipation of the raw materials inside the tank body, and uneven temperature inside the tank body, which affects the reaction inside the tank body. 2. The constant temperature mixing tank mentioned above has a bevel gear 1 installed inside the support box via a motor. A stirring shaft is installed on one side of the bevel gear 1 via a bevel gear 2. The stirring shaft is driven by the motor to stir the raw materials in the tank. However, during use, the blades of the stirring shaft rotate synchronously, resulting in a mixing dead zone inside the tank, which leads to incomplete reaction.

[0003] To address these issues, we provide a constant-temperature stirred tank for the production of methyl methoxypropionate. Utility Model Content

[0004] The purpose of this invention is to provide a constant-temperature stirring tank for the production of methyl methoxypropionate. The upper and lower rotating shafts drive the upper and lower stirring blades to rotate in opposite directions, effectively reducing the mixing dead zone within the tank and solving the problem of large mixing dead zones hindering uniform mixing of raw materials. A fixed frame is used to install the mounting frame and heat exchange tubes around the inside of the tank. The heat exchange tubes and fins are used to heat or cool the raw materials inside the tank. Simultaneously, the mounting frame and heat exchange tubes act as baffles, increasing the contact area between the raw materials and the heat exchange tubes and eliminating vortices, thus solving the problem of maintaining a constant temperature within the tank.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a constant temperature stirring tank for the production of methyl methoxypropionate, comprising a tank body and a tank cover fixedly connected to the top of the tank body. A stirring assembly is disposed at the center of the interior of the tank body. The stirring assembly includes a mounting bracket fixedly connected to the center of the top of the tank cover. An upper rotating shaft is rotatably connected to a horizontal support arm below the mounting bracket. The bottom end of the upper rotating shaft extends to the upper interior of the tank body and is fixedly connected to an upper stirring blade. A lower rotating shaft is sleeved inside the upper rotating shaft. The top end of the lower rotating shaft is rotatably connected to a horizontal support arm above the mounting bracket. A lower stirring blade is fixedly connected to the outer wall of the lower rotating shaft. The lower stirring blade is located at the lower interior of the tank body. Temperature control components are disposed on the inner walls of the tank body. The temperature control components include two fixing frames fixedly connected to the front and rear ends of the inner wall of the tank body. A mounting frame is disposed between the two fixing frames. A locking bracket for locking the fixing frame and the mounting frame is fixedly connected to the top of the mounting frame. Multiple heat exchange tubes pass through the interior of the mounting frame. Fins are fixedly connected to the outer wall of each heat exchange tube.

[0006] A further feature of this invention is that a second bevel gear is fixedly connected to the outer wall of the upper rotating shaft, the second bevel gear being located inside the lower part of the mounting bracket, and a third bevel gear is fixedly connected to the outer wall of the lower rotating shaft, the third bevel gear being located inside the upper part of the mounting bracket.

[0007] A further feature of this invention is that a drive motor is fixedly connected to one outer wall of the mounting bracket via a motor frame, the output shaft of the drive motor extends to the inner side of the mounting bracket and is fixedly connected to a first bevel gear, the first bevel gear meshing between a second bevel gear and a third bevel gear.

[0008] A further feature of this invention is that: a stabilizing frame is fixedly connected to the lower interior of the tank, a rotating disk is rotatably connected to the center of the stabilizing frame, multiple positioning holes are provided on the top of the rotating disk, permanent magnets are fixedly connected to the four sides of the interior of the rotating disk, a connecting disk is fixedly connected to the bottom of the lower rotating shaft, and multiple positioning pins are fixedly connected to the bottom of the connecting disk, with the bottom ends of the positioning pins fitted into the positioning holes with a gap.

[0009] A further feature of this invention is that a discharge pipe is fixedly connected to the center of the bottom of the tank, and a discharge valve is fixedly connected to the discharge pipe.

[0010] The present invention is further configured such that: the top of the fixed frame is movably connected to a plurality of connecting blocks via a first U-shaped frame, the free end of the connecting blocks is provided with an installation hole, the inside of the locking frame is movably connected to a connecting plate, the lower surface of the connecting plate is fixedly connected to a plurality of protruding posts at equal intervals, and the front and rear ends of the top of the mounting frame are fixedly connected to a plurality of second U-shaped frames that cooperate with the free ends of the connecting blocks at equal intervals, the bottom end of the protruding post penetrates the second U-shaped frame and is clearance-fitted inside the installation hole.

[0011] A further feature of this invention is that the top of the locking frame is threadedly connected to a threaded rod, the top end of the threaded rod is fixedly connected to a knob, and the bottom end of the threaded rod is rotatably connected to the center of the upper surface of the connecting plate.

[0012] A further feature of this invention is that: a distributor is fixedly connected to the top center of the mounting frame, and an inlet pipe is fixedly connected to the inlet end of the distributor; a confluencer is fixedly connected to the bottom center of the mounting frame, and an outlet pipe is fixedly connected to the outlet end of the confluencer; the top end of the heat exchange tube is fixedly connected to the outlet end of the distributor, and the bottom end of the heat exchange tube is fixedly connected to the inlet end of the confluencer.

[0013] A further feature of this invention is that multiple collars are evenly spaced on the outer wall of the outlet pipe, and one side of each collar is fixedly connected to the outer wall of the mounting frame at equal intervals.

[0014] This utility model has the following beneficial effects: 1. This utility model, by setting up a stirring assembly, uses a single drive motor to drive the first bevel gear, which simultaneously meshes with the second and third bevel gears, driving the upper and lower rotating shafts to rotate in opposite directions. The upper and lower stirring blades generate opposing shear forces and flow fields, forming strong convection and turbulence inside the tank. This completely breaks the mixing dead zone present in traditional unidirectional stirring, ensuring that all reaction raw materials, including high-viscosity materials, can be fully and uniformly mixed, significantly improving the reaction rate and product uniformity.

[0015] 2. This utility model, by setting up a temperature control component, forms a huge heat exchange surface with multiple mounting frames arranged around the inner wall of the tank and multiple heat exchange tubes running through them. The fins attached to the heat exchange tubes further greatly increase the effective heat exchange area, allowing heat to be uniformly and efficiently transferred to or removed from the material through this large surface area. In addition, the vertical mounting frames and heat exchange tube array physically break the tendency of the material to rotate synchronously with the agitator, effectively eliminating the vortex phenomenon and forcing the material to produce complex axial and radial movements. This not only further promotes mixing but also ensures that all materials can frequently contact the heat exchange surface, achieving rapid and accurate global temperature control. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a front sectional view of the tank body of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the stirring assembly of this utility model.

[0020] Figure 4 This is a structural disassembly diagram of the mounting bracket of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the rotating shaft of this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the lower rotating shaft of this utility model.

[0023] Figure 7 This is a structural disassembly diagram of the stabilizer frame of this utility model.

[0024] Figure 8 This is a schematic diagram of the temperature control component of this utility model.

[0025] Figure 9 This is a structural disassembly diagram of the fixing frame of this utility model.

[0026] Figure 10 This is a structural disassembly diagram of the mounting frame of this utility model.

[0027] Figure 11 This is a schematic diagram of the heat exchange tube of this utility model.

[0028] The attached diagram lists the components represented by each number as follows: 1-Tank body, 101-Discharge pipe, 102-Discharge valve, 2-Tank cover, 3-Agitator assembly, 301-Mounting bracket, 301a-Motor bracket, 301b-Drive motor, 301c-First bevel gear, 302-Upper rotating shaft, 302a-Second bevel gear, 303-Upper agitator blade, 304-Lower rotating shaft, 304a-Third bevel gear, 304b-Connecting disc, 304c-Positioning column, 305-Lower agitator blade, 306-Stabilizing frame, 306a-Rotating disc, 306b-Positioning hole 306c - Permanent magnet, 4 - Temperature control assembly, 401 - Fixing frame, 401a - First U-shaped frame, 401b - Connecting block, 401c - Mounting hole, 402 - Mounting frame, 402a - Second U-shaped frame, 402b - Collar, 403 - Locking frame, 403a - Connecting plate, 403b - Protruding post, 403c - Threaded rod, 403d - Knob, 404 - Heat exchange tube, 404a - Fin, 404b - Diverter, 404c - Inlet pipe, 404d - Confluencer, 404e - Outlet pipe. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0030] Example 1 Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, this is the first embodiment of the present invention. This embodiment provides a constant temperature stirring tank for the production of methyl methoxypropionate, including a tank body 1 and a tank cover 2 fixedly connected to the top of the tank body 1. The tank cover 2 is also provided with conventional facilities such as a feed pipe, an exhaust pipe, and a pressure relief pipe. A stirring assembly 3 is arranged in the center of the interior of the tank body 1. The stirring assembly 3 includes a mounting frame 301, an upper rotating shaft 302, an upper stirring blade 303, a lower rotating shaft 304, and a lower stirring blade 305. The upper rotating shaft 302 and the lower rotating shaft 304 drive the upper stirring blade 303 and the lower stirring blade 305 to rotate in opposite directions, thereby reducing the mixing dead zone in the tank body 1 and solving the problem that the existing mixing dead zone is large and not conducive to uniform mixing of raw materials.

[0031] Specifically, the mounting bracket 301 is fixedly connected to the top center of the tank cover 2. The mounting bracket 301 is used to install the upper rotating shaft 302 and the lower rotating shaft 304. The upper rotating shaft 302 is rotatably connected to the horizontal support arm below the mounting bracket 301. The bottom end of the upper rotating shaft 302 extends to the upper part of the tank body 1 and is fixedly connected to the upper stirring blade 303. The upper rotating shaft 302 is used to install the upper stirring blade 303 and drive the upper stirring blade 303 to rotate synchronously. The upper stirring blade 303 is used to stir the methyl methoxypropionate raw material in the upper part of the tank body 1. The mixture is stirred and mixed. A lower rotating shaft 304 is fitted inside the upper rotating shaft 302. The top end of the lower rotating shaft 304 is rotatably connected to the horizontal support arm above the mounting frame 301. A lower stirring blade 305 is fixedly connected to the outer wall of the lower rotating shaft 304. The lower stirring blade 305 is located inside the lower part of the tank 1. The rotation direction of the lower rotating shaft 304 is opposite to that of the upper rotating shaft 302. It is used to install the lower stirring blade 305 and drive the lower stirring blade 305 to rotate. The lower stirring blade 305 is used to stir and mix the methyl methoxypropionate raw material inside the lower part of the tank 1.

[0032] Furthermore, a second bevel gear 302a is fixedly connected to the outer wall of the upper rotating shaft 302. The second bevel gear 302a is located inside the lower part of the mounting bracket 301. A third bevel gear 304a is fixedly connected to the outer wall of the lower rotating shaft 304. The third bevel gear 304a is located inside the upper part of the mounting bracket 301. The second bevel gear 302a is configured to drive the upper rotating shaft 302 to rotate, and the third bevel gear 304a is configured to drive the lower rotating shaft 304 to rotate. A drive motor 301b is fixedly connected to one outer wall of the mounting bracket 301 via a motor bracket 301a. The output shaft of the drive motor 301b extends to the inside of the mounting bracket 301 and is fixedly connected to a first bevel gear 301c. The first bevel gear 301c meshes between a second bevel gear 302a and a third bevel gear 304a. The motor bracket 301a is set up to mount the drive motor 301b. The drive motor 301b is set up to drive the upper rotating shaft 302 and the lower rotating shaft 304 to rotate in opposite directions. The first bevel gear 301c, in conjunction with the second bevel gear 302a and the third bevel gear 304a, enables the output shaft of the drive motor 301b to drive the upper rotating shaft 302 and the lower rotating shaft 304 to rotate in opposite directions simultaneously. A stabilizing frame 306 is fixedly connected to the lower interior of the tank body 1. A rotating disk 306a is rotatably connected to the center of the stabilizing frame 306. Multiple positioning holes 306b are provided on the top of the rotating disk 306a. Permanent magnets 306c are fixedly connected to all four sides of the interior of the rotating disk 306a. A connecting disk 304b is fixedly connected to the bottom end of the lower rotating shaft 304. Multiple positioning pins 304c are fixedly connected to the bottom of the connecting disk 304b, with the bottom ends of the positioning pins 304c fitting into the positioning holes 306b with clearance. Internally, the stabilizer 306 is used to mount the bottom end of the lower rotating shaft 304, making the rotation of the lower rotating shaft 304 more stable. The connecting plate 304b and the rotating plate 306a are used to mount the bottom end of the lower rotating shaft 304 on the stabilizer 306. The positioning pin 304c and the positioning hole 306b are used to position the connecting plate 304b and the rotating plate 306a. The permanent magnet 306c is used to magnetically attract the connecting plate 304b to the rotating plate 306a. A discharge pipe 101 is fixedly connected to the bottom center of the tank body 1, and a discharge valve 102 is fixedly connected to the discharge pipe 101. The discharge pipe 101 and the discharge valve 102 are used to discharge the material in the tank body 1.

[0033] The operation process of this embodiment is as follows: First, place the can lid 2 on top of the can body 1, and align the positioning post 304c on the connecting plate 304b with the positioning hole 306b on the rotating plate 306a. Then, cover the can lid 2 onto the can body 1 and connect and fix the two. At this time, the connecting plate 304b is fixed on the rotating plate 306a under the magnetic attraction of the permanent magnet 306c. Next, the raw material of methyl methoxypropionate is added into the can body 1 through the feed pipe on the can lid 2, and the drive motor 301b is started. The output shaft of the drive motor 301b is connected to the second bevel gear 302a and the third bevel gear through the first bevel gear 301c. The meshing transmission between wheels 304a drives the upper rotating shaft 302 and the lower rotating shaft 304 to rotate in opposite directions simultaneously. The upper rotating shaft 302 and the lower rotating shaft 304 drive the upper stirring blade 303 and the lower stirring blade 305 to rotate in opposite directions, respectively. The upper stirring blade 303 and the lower stirring blade 305 stir the methyl methoxypropionate raw material at the top and bottom of the tank 1 in opposite directions, thereby achieving a thorough mixing reaction of the methyl methoxypropionate raw material. Finally, the discharge valve 102 is opened to discharge the completely reacted material in the tank 1 through the discharge pipe 101, thereby achieving constant temperature stirring of methyl methoxypropionate.

[0034] Example 2 Please see Figure 2 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but differs from the previous embodiment in that: a temperature control component 4 is provided on the inner walls of the tank 1. The temperature control component 4 includes a fixing frame 401, a mounting frame 402, a locking bracket 403, and a heat exchange tube 404. The mounting frame 402 and the heat exchange tube 404 are installed on the inner perimeter of the tank 1 through the fixing frame 401, and the raw material in the tank 1 is heated or cooled through the heat exchange tube 404 and the fins 404a. At the same time, the mounting frame 402 and the heat exchange tube 404 act as baffles, which not only increases the contact between the raw material and the heat exchange tube 404, but also eliminates vortices, thus solving the problem of the existing inconvenience in maintaining a constant temperature in the tank 1.

[0035] Specifically, two fixing frames 401 are fixedly connected to the front and rear ends of the inner wall of the tank 1, respectively. The bottom of each fixing frame 401 has a protrusion to support the bottom of the mounting frame 402. The fixing frames 401 are used to install the mounting frame 402 inside the tank 1. The mounting frame 402 is positioned between the two fixing frames 401. A locking bracket 403 is fixedly connected to the top of the mounting frame 402. The mounting frame 402 is used to install the heat exchange tube 404 and, in conjunction with the heat exchange tube 404, acts as a baffle to eliminate vortices within the tank 1, facilitating... The raw materials in tank 1 are mixed, and the locking frame 403 is used to lock the mounting frame 402 and the fixing frame 401. Multiple heat exchange tubes 404 run through the inside of the mounting frame 402. Fins 404a are fixedly connected to the outer wall of each heat exchange tube 404. The heat exchange tubes 404 are used to heat or cool the methyl methoxypropionate raw material in tank 1, ensuring a constant temperature environment in tank 1. The fins 404a are used to increase the contact area between the heat exchange tubes 404 and the methyl methoxypropionate raw material, facilitating heat exchange between the heat exchange tubes 404 and the methyl methoxypropionate raw material.

[0036] Furthermore, the top of the fixed frame 401 is movably connected to multiple connecting blocks 401b via a first U-shaped frame 401a. The free ends of the connecting blocks 401b have mounting holes 401c. A connecting plate 403a is movably connected inside the locking frame 403. Multiple protruding posts 403b are fixedly connected at equal intervals on the lower surface of the connecting plate 403a. Multiple second U-shaped frames 402a, which mate with the free ends of the connecting blocks 401b, are fixedly connected at equal intervals at the front and rear ends of the top of the mounting frame 402. The bottom ends of the protruding posts 403b penetrate... The second U-shaped frame 402a is inserted through the mounting hole 401c with clearance fit. The connection block 401b and the second U-shaped frame 402a realize the connection between the fixed frame 401 and the mounting frame 402. The mounting hole 401c and the protrusion 403b realize the connection between the connection block 401b and the connection plate 403a. The connection plate 403a is used to fix the free end of the connection block 401b inside the second U-shaped frame 402a, thus fixing the mounting frame 402 on the fixed frame 401. The top of the locking frame 403 is threadedly connected to a threaded rod 403c, the top of the threaded rod 403c is fixedly connected to a knob 403d, and the bottom of the threaded rod 403c is rotatably connected to the center of the upper surface of the connecting plate 403a. The threaded rod 403c is designed to drive the connecting plate 403a to move inside the locking frame 403, and the knob 403d is designed to facilitate the rotation of the threaded rod 403c. A distributor 404b is fixedly connected to the top center of the mounting frame 402. The inlet end of the distributor 404b is fixedly connected to an inlet pipe 404c. A confluencer 404d is fixedly connected to the bottom center of the mounting frame 402. The outlet end of the confluencer 404d is fixedly connected to an outlet pipe 404e. The top end of the heat exchange tube 404 is fixedly connected to the outlet end of the distributor 404b, and the bottom end of the heat exchange tube 404 is fixedly connected to the inlet end of the confluencer 404d. The distributor 404b... The configuration is used to evenly distribute the liquid in the inlet pipe 404c into multiple heat exchange tubes 404. The inlet pipe 404c is connected to a hot water tank and a cold water tank outside the pump body to provide hot or cold water into the heat exchange tubes 404. The confluencer 404d is used to collect the liquid in the multiple heat exchange tubes 404. The outlet pipe 404e is also connected to a hot water tank and a cold water tank outside the pump body, so that the liquid in the heat exchange tubes 404 can flow back to the hot water tank and the cold water tank for recycling. Multiple collars 402b are evenly spaced on the outer wall of the outlet pipe 404e. One side of the collars 402b is fixedly connected to the outer wall of the mounting frame 402 at equal intervals. The collars 402b are used to install the outlet pipe 404e on the mounting frame 402.

[0037] The rest of the structure is the same as in Example 1.

[0038] The operation process of this embodiment is as follows: First, the mounting frame 402 is placed between adjacent fixed frames 401, and the connecting block 401b is moved so that the free end of the connecting block 401b is fitted with the inside of the second U-shaped frame 402a. Then, the knob 403d is rotated, which drives the threaded rod 403c to rotate. Under the action of the threaded connection between the threaded rod 403c and the locking frame 403, the threaded rod 403c drives the connecting plate 403a to move, thereby causing the protrusion 403b on the connecting plate 403a to fit with the connecting block. The mounting hole 401c on the free end of 401b allows the mounting frame 402 and heat exchange tube 404 to be installed inside the tank 1. Then, the inlet pipe 404c and outlet pipe 404e are connected to the hot water tank and cold water tank outside the pump body. According to the temperature inside the tank 1, the liquid in the hot water tank or cold water tank is introduced into the heat exchange tube 404 through the inlet pipe 404c and the distributor 404b by the pump body. The heat exchange tube 404 and fins 404a are used to heat or cool the methyl methoxypropionate raw material during the stirring process, so as to maintain a constant temperature inside the tank 1.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A constant-temperature stirring tank for the production of methyl methoxypropionate, comprising a tank body (1) and a tank cover (2) fixedly connected to the top of the tank body (1), characterized in that: A stirring assembly (3) is provided at the center of the interior of the tank (1), and the stirring assembly (3) includes a mounting bracket (301) fixedly connected to the center of the top of the tank cover (2). An upper rotating shaft (302) is rotatably connected to the horizontal support arm below the mounting bracket (301), and the bottom end of the upper rotating shaft (302) extends to the upper interior of the tank (1) and is fixedly connected to an upper stirring blade (303). A lower rotating shaft (304) is sleeved inside the upper rotating shaft (302), and the top end of the lower rotating shaft (304) is rotatably connected to the horizontal support arm above the mounting bracket (301). A lower stirring blade is fixedly connected to the outer wall of the lower rotating shaft (304). (305), and the lower stirring blade (305) is located inside the tank (1). Temperature control components (4) are provided on the inner walls of the tank (1). The temperature control components (4) include two fixed frames (401) fixedly connected to the front and rear ends of the inner wall of the tank (1). An installation frame (402) is provided between the two fixed frames (401). A locking bracket (403) for locking the fixed frame (401) and the installation frame (402) is fixedly connected to the top of the installation frame (402). Multiple heat exchange tubes (404) pass through the interior of the installation frame (402). Fins (404a) are fixedly connected to the outer walls of the heat exchange tubes (404).

2. The constant temperature stirred tank for the production of methyl methoxypropionate according to claim 1, characterized in that, A second bevel gear (302a) is fixedly connected to the outer wall of the upper rotating shaft (302), and the second bevel gear (302a) is located inside the lower part of the mounting bracket (301). A third bevel gear (304a) is fixedly connected to the outer wall of the lower rotating shaft (304), and the third bevel gear (304a) is located inside the upper part of the mounting bracket (301).

3. The constant temperature stirred tank for the production of methyl methoxypropionate according to claim 2, characterized in that, A drive motor (301b) is fixedly connected to one side of the outer wall of the mounting bracket (301) via a motor bracket (301a), and the output shaft of the drive motor (301b) extends to the inner side of the mounting bracket (301) and is fixedly connected to a first bevel gear (301c), which meshes between a second bevel gear (302a) and a third bevel gear (304a).

4. The constant-temperature stirred tank for the production of methyl methoxypropionate according to claim 1, characterized in that, A stabilizing frame (306) is fixedly connected to the lower interior of the tank (1), and a rotating disk (306a) is rotatably connected to the center of the stabilizing frame (306). The top of the rotating disk (306a) is provided with multiple positioning holes (306b), and permanent magnets (306c) are fixedly connected to the four sides of the interior of the rotating disk (306a). A connecting disk (304b) is fixedly connected to the bottom end of the lower rotating shaft (304), and multiple positioning pins (304c) are fixedly connected to the bottom of the connecting disk (304b). The bottom end of the positioning pin (304c) is fitted with a clearance inside the positioning hole (306b).

5. The constant-temperature stirred tank for the production of methyl methoxypropionate according to claim 4, characterized in that, The bottom center of the tank (1) is fixedly connected to a discharge pipe (101), and a discharge valve (102) is fixedly connected to the discharge pipe (101).

6. The constant-temperature stirred tank for the production of methyl methoxypropionate according to claim 1, characterized in that, The top of the fixed frame (401) is movably connected to a plurality of connecting blocks (401b) via a first U-shaped frame (401a), and the free end of the connecting block (401b) is provided with a mounting hole (401c). The inside of the locking frame (403) is movably connected to a connecting plate (403a), and the lower surface of the connecting plate (403a) is fixedly connected with a plurality of protruding posts (403b) at equal intervals. The front and rear ends of the top of the mounting frame (402) are fixedly connected with a plurality of second U-shaped frames (402a) that cooperate with the free ends of the connecting blocks (401b), and the bottom end of the protruding post (403b) passes through the second U-shaped frame (402a) and is clearance-fitted inside the mounting hole (401c).

7. The constant-temperature stirred tank for the production of methyl methoxypropionate according to claim 6, characterized in that, The top of the locking bracket (403) is threadedly connected to a threaded rod (403c), and the top of the threaded rod (403c) is fixedly connected to a knob (403d). The bottom end of the threaded rod (403c) is rotatably connected to the center of the upper surface of the connecting plate (403a).

8. The constant temperature stirred tank for the production of methyl methoxypropionate according to claim 1, characterized in that, A distributor (404b) is fixedly connected to the top center of the mounting frame (402), and the inlet end of the distributor (404b) is fixedly connected to the liquid inlet pipe (404c). A confluencer (404d) is fixedly connected to the bottom center of the mounting frame (402), and the outlet end of the confluencer (404d) is fixedly connected to the liquid outlet pipe (404e). The top end of the heat exchange tube (404) is fixedly connected to the outlet end of the distributor (404b), and the bottom end of the heat exchange tube (404) is fixedly connected to the inlet end of the confluencer (404d).

9. A constant-temperature stirred tank for the production of methyl methoxypropionate according to claim 8, characterized in that, Multiple collars (402b) are evenly spaced on the outer wall of the liquid outlet pipe (404e), and one side of each collar (402b) is fixedly connected to the outer wall of the mounting frame (402) at equal intervals.

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