Reaction device for preparing foam dressing

Abstract

The invention relates to the technical field of manufacturing equipment, and discloses a reaction device for foam dressing preparation, the reaction device comprises a protective shell, a heating mechanism and a mixing mechanism, the protective shell is internally provided with a reaction cavity, and the reaction cavity is used for bearing a to-be-reacted foam material; the heating mechanism comprises a sleeve, a heating wire and a heat conduction convex block, the sleeve is detachably connected in the reaction cavity, the sleeve is of a hollow cylindrical structure, the heating wire is arranged in the sleeve in the extension direction of the sleeve, and the position, corresponding to the heating wire, of the heat conduction convex block is arranged on the inner wall of the sleeve; the mixing mechanism comprises a transmission shaft, a stirring blade and a scraping plate, and the transmission shaft is rotationally connected with the protective shell. According to the reaction device for preparing the foam dressing, a foaming material can be uniformly heated, a vacuum area for reaction is reduced, and the heating efficiency, the safety and the uniformity during heating are effectively improved, so that the quality of a foaming product is improved, and rapid and uniform heating of the material is realized.

Description

Technical Field

[0001] The invention relates to the technical field of manufacturing equipment, and in particular to a reaction device for preparing foam dressings. Background Art

[0002] Foam dressing is a new type of medical dressing, mainly used for wound care. It is a material with a three-dimensional porous structure. Its pores can absorb wound exudates, such as blood, tissue fluid, etc. This absorption function can maintain a moist environment for the wound. This is because a moderately moist environment helps promote cell migration and proliferation during wound healing. At the same time, foam dressings can also isolate external bacteria. Its complete structure can serve as a barrier to reduce the contamination of the wound by external microorganisms. Moreover, it has certain buffering properties and can protect the wound from external pressure and friction.

[0003] When making foam dressings, the required raw materials are first mixed evenly, and then the foaming operation is started. When a chemical foaming agent is used, it is necessary to decompose and produce gas under certain temperature and chemical reaction conditions to make the material foam. However, during the heating process of the existing reactor, it is often only heated at a single position by means of an internal heating element, and then stirred evenly by a mixing mechanism to increase the temperature inside the reactor as a whole, thereby achieving a heating effect. However, this heating method has low heating efficiency and is prone to uneven heating. When the heating is uneven, the foaming material is prone to local over-temperature or local over-temperature, causing the internal materials to react with different effects, thereby affecting the quality of the produced products. Summary of the invention

[0004] The present invention provides a reaction device for preparing a foam dressing, which can uniformly heat a foaming material, reduce a vacuum area of ​​the reaction, effectively improve the heating efficiency, safety and uniformity during heating, thereby improving the quality of the foaming product and achieving rapid and uniform heating of the material.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A reaction device for preparing a foam dressing is designed, comprising a protective shell, a heating mechanism and a mixing mechanism, wherein: A reaction chamber is provided inside the protective shell for carrying the foaming material to be reacted; The heating mechanism comprises a sleeve, a heating wire and a heat-conducting protrusion, wherein the sleeve is detachably connected in the reaction chamber, the sleeve is a hollow cylindrical structure, the heating wire is arranged in the sleeve along the extension direction of the sleeve, and the heat-conducting protrusion is arranged on the inner wall of the sleeve corresponding to the position of the heating wire; The mixing mechanism comprises a transmission shaft, stirring blades and a scraper, wherein the transmission shaft is rotatably connected to the protective shell and at least partially located in the reaction chamber, the stirring blades are evenly distributed on the surface of the transmission shaft and are arranged in sequence along the extension direction of the transmission shaft, and each stirring blade is staggered with the adjacent stirring blades in the extension direction of the transmission shaft; The scraper is fixedly connected to the end surface of the stirring blade, and the surface of the scraper facing the inner wall of the sleeve is fixedly connected with scraping teeth, and the scraping teeth correspond to the gaps between adjacent heat-conducting protrusions.

[0006] Optionally, the cross-section of the thermally conductive protrusion is trapezoidal, and the longer edge of the trapezoid is in contact with the inner wall of the sleeve, and the shorter edge of the trapezoid faces the scraper. The scraping teeth corresponding to the thermally conductive protrusion are also trapezoidal to improve the strength of the scraping teeth.

[0007] Optionally, a discharge mechanism is provided at the bottom of the protective shell, and the discharge mechanism includes a sealing plate, a discharge port and a control valve. The top of the sealing plate is connected to the bottom of the protective shell by bolts, and the discharge port is opened on the inner bottom wall of the sealing plate. The top of the control valve is connected to the bottom of the sealing plate by bolts and is located below the discharge port.

[0008] Optionally, a support mechanism is provided below the sealing plate, and the support mechanism includes a support seat, support legs and an anti-slip pad. The top of the support seat is connected to the bottom of the sealing plate by bolts, and the plurality of support legs are respectively fixedly installed on the bottom of the support seat, and the plurality of anti-slip pads are respectively fixedly installed on the bottom of the support legs.

[0009] Optionally, the top of the protective shell is detachably connected to a protective mechanism, which includes a protective cover, a mounting hole and a bearing. The bottom of the protective cover is connected to the top of the protective shell by bolts. The mounting hole is opened in the middle of the top of the protective cover, and the outer surface of the bearing is fixedly mounted to the inner wall of the mounting hole.

[0010] Optionally, the protective mechanism also includes a feed port, a delivery pipe and a pressure gauge, the feed port is opened at the top of the protective cover on one side of the mounting hole, the end of the delivery pipe is connected to the top of the feed port by bolts, and the pressure gauge is fixedly installed on the top of the protective cover on the other side of the mounting hole.

[0011] Optionally, a driving mechanism is provided on the top of the protective cover, and the driving mechanism includes a fixing plate and a motor, the bottom of the fixing plate is connected to the middle of the top of the protective cover by bolts, and the motor is fixedly installed in the middle of the top of the fixing plate.

[0012] Optionally, the top of the outer surface of the transmission shaft is fixedly mounted to the inner ring of the bearing, the bottom of the outer surface of the transmission shaft is rotatably connected to the middle of the inner wall of the discharge port, and the top of the transmission shaft is connected to the output end of the motor via a key.

[0013] Optionally, the mixing mechanism further includes a push plate and a drainage groove, wherein the push plate is fixedly mounted on the outer wall of the transmission shaft and is located below the stirring blade, and a plurality of drainage grooves are respectively opened on the outer wall of the push plate.

[0014] Optionally, a positioning sleeve is provided on the surface of the transmission shaft, and the transmission shaft is connected to the positioning sleeve through a through hole on the surface of the positioning sleeve. A flow cavity is provided inside the stirring blade, and the flow cavity passes through the through hole provided on the transmission shaft. An air outlet is provided on the surface of the stirring blade.

[0015] The present invention provides a reaction device for preparing a foam dressing, which has the following beneficial effects: The reaction device for preparing the foam dressing can heat and raise the temperature with the sleeve as a carrier through the coordinated arrangement of the heating wire and the heat-conducting protrusion. The heat-conducting protrusion is subjected to heat conduction by the sleeve, and the foaming material stored in the sleeve is evenly heated in cooperation with the sleeve. The heat-conducting protrusion can increase the contact area between the sleeve and the internal material, accelerate the speed of heat transfer, and effectively improve the heating efficiency. The internal material can be quickly mixed through the rapid rotation of the stirring blade, and the mutual transfer of heat can be accelerated, thereby achieving better heating and mixing effects. Through the connection between the scraper and the stirring blade, the scraper can rotate and move with the stirring blade. Combined with the meshing arrangement of the scraper and the heat-conducting protrusion, the scraper scrapes off the foaming material remaining on the heat-conducting protrusion when rotating, avoiding the accumulation of the foaming material at the heat-conducting protrusion, preventing the safety hazard (such as spontaneous combustion of the material or reaction out of control) caused by overheating due to the foaming material being accumulated on the heat-conducting protrusion and heated for a long time, and also reducing the vacuum area of ​​the reaction, effectively improving the heating efficiency, safety and uniformity during heating, thereby improving the quality of the foaming product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall installation structure of the present invention; Figure 2 This is a schematic diagram of the installation structure of the heating mechanism of the present invention; Figure 3 It is a schematic diagram of the explosion structure of the discharge mechanism of the present invention; Figure 4 This is a schematic diagram of the installation structure of the mixing mechanism of the present invention; Figure 5 This is a schematic diagram of the explosion structure of the protection mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the mixing mechanism of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the sleeve of the present invention.

[0017] In the figure: 1. protective shell; 2. discharge mechanism; 201. sealing plate; 202. discharge port; 203. control valve; 3. supporting mechanism; 301. supporting seat; 302. supporting leg; 303. anti-skid pad; 4. heating mechanism; 401. sleeve; 402. heating wire; 403. heat-conducting bump; 5. protective mechanism; 501. protective cover; 502. bearing; 503. feed port; 504. delivery pipe; 505. pressure gauge; 506. mounting hole; 6. driving mechanism; 601. fixing plate; 602. motor; 7. mixing mechanism; 701. transmission shaft; 702. stirring blade; 703. push plate; 704. drainage trough; 705. scraper; 900. air outlet. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. All other embodiments obtained by ordinary technicians in the field without making creative work based on the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0019] See also Figures 1 to 7 The embodiment of the present invention provides a reaction kettle, which is used in the scenario of foaming operation when preparing foam dressings. In this embodiment, the structure of the reaction kettle is improved to have the advantage of rapid and uniform heating. Specifically, taking the foaming operation of preparing foam dressings as an example, as a preferred solution in this embodiment, the reaction kettle is specifically a reaction device for preparing foam dressings, which can quickly and evenly heat the materials for preparing foam dressings.

[0020] See also Figures 1 to 7 The present invention provides a technical solution: a reaction device for preparing foam dressings, and the cutting machine is mainly used in the scenario of foaming operation during the preparation of foam dressings.

[0021] It comprises a protective shell 1, a heating mechanism 4 and a mixing mechanism 7, wherein: The protective shell 1 has a reaction chamber inside for carrying the foaming material to be reacted; The heating mechanism 4 includes a sleeve 401, a heating wire 402 and a heat-conducting protrusion 403. The sleeve 401 is detachably connected in the reaction chamber. The sleeve 401 is a hollow cylindrical structure. The heating wire 402 is arranged in the sleeve 401 along the extension direction of the sleeve 401. The heat-conducting protrusion 403 is arranged on the inner wall of the sleeve 401 corresponding to the position of the heating wire 402. The mixing mechanism 7 includes a transmission shaft 701, stirring blades 702 and a scraper 705. The transmission shaft 701 is rotatably connected to the protective shell 1 and is at least partially located in the reaction chamber. The stirring blades 702 are evenly distributed on the surface of the transmission shaft 701 and are arranged in sequence along the extension direction of the transmission shaft 701. Each stirring blade 702 is staggered with the adjacent stirring blades 702 in the extension direction of the transmission shaft 701. The scraper 705 is fixedly connected to the end surface of the stirring blade 702 . The surface of the scraper 705 facing the inner wall of the sleeve 401 is fixedly connected with scraping teeth, and the scraping teeth correspond to the gaps between adjacent heat-conducting protrusions 403 .

[0022] In this embodiment, through the setting of the sleeve 401, it can be directly installed inside the protective shell 1, and then heated by means of the internal heating wire 402, and the inner wall of the sleeve 401 and the outer wall of the heat-conducting protrusion 403 are directly in contact with the material, so that the heat is transferred to the material more quickly, and the larger contact area can also speed up the heat conduction speed, so as to achieve rapid and uniform heating of the material, and the transmission shaft 701 drives the stirring blade 702 to rotate rapidly, so that the internal material can be quickly mixed, and then the chemical catalyst can be fully mixed with the material, which plays a better role. The foaming effect is achieved, and the heating wire 402 is used to provide a suitable temperature to provide a good foaming environment for the chemical catalyst. The scraper 705 is configured to match the shape of the heat-conducting bump 403 and is meshed with the heat-conducting bump 403. The scraper 705 can cooperate with the heat-conducting bump 403 to scrape off the residual material on the heat-conducting bump 403, thereby reducing the material from being in contact with the heat-conducting bump 403 for a long time and affecting the normal foaming reaction, avoiding long-term heating, thereby achieving a better mixing effect and reducing the material from being overheated and affecting the overall preparation quality. At the same time, through the tooth grooves on the scraper 705, the heat-conducting protrusions 403 can play an auxiliary supporting role for the scraper 705, so as to prevent the scraper 705 from moving downward after the material adheres to it and causing wear on the inner bottom wall of the sleeve 401. At the same time, multiple heat-conducting protrusions 403 cooperate with multiple sections of the scraper 705 to disperse the force of the multiple sections. When the scraper 705 rotates with the stirring blade 702, the resistance encountered by the multiple sections when moving is dispersed, rather than concentrated in a single position, which can reduce the stress of each force point and also reduce the scraper 70 5. The risk of damage in a high-intensity working environment. Since the grooves can disperse the force, the wear of the scraper 705 during the working process will be relatively reduced, reducing the risk of the scraper 705 breaking. The scraper 705 is more evenly stressed with the cooperation of the heat-conducting bumps 403, which reduces the stress concentration phenomenon and increases the service life of the scraper 705. It not only improves the durability of the scraper 705, but also reduces the frequency of maintenance and replacement, reduces the operating cost of the equipment, facilitates cleaning, and improves the foaming efficiency and the safety of the scraper 705 when in use; In the above embodiment, as a preferred solution, the cross section of the heat-conducting protrusion 403 is set in a trapezoidal shape, and the longer edge of the trapezoid is attached to the inner wall of the sleeve 401, and the shorter edge of the trapezoid faces the scraper 705, and the scraping teeth corresponding to the heat-conducting protrusion 403 are also set in a trapezoidal shape to improve the strength of the scraping teeth; The trapezoidal setting can avoid the influence on the fluidity of the foaming material, so that the foaming material can slide along the surface of the trapezoid, reduce the retention of the foaming material, and reduce the obstruction of the forward movement of the scraper 705. The wider side of the trapezoidal structure provides a larger contact area, disperses the force, reduces the stress concentration at a single point, enhances the overall stability, and makes the material distribution more reasonable, thereby improving the bearing capacity of the structure without increasing the amount of material used, and has good shear resistance, can more effectively resist the shear force generated during the working process, can better adapt to the relative movement between the scraper 705 and the heat-conducting protrusion 403, reduce the wear of the scraper teeth, and thus extend the service life; The scraper 705 is used in conjunction with the stirring blades 702 of different heights to ensure that the materials can be continuously scraped, mixed and turned during the stirring and heating process, which significantly improves the mixing effect; The stirring blades 702 at the front first generate shear force with the foaming material, stir the material and form a preliminary flow, and the stirring blades 702 at different heights at the rear will again generate shear force with the flowing materials to further disturb the fluid. The staggered setting helps to form complex vortices in the stirring area. The vortex effect can increase the mixing path and time of the materials, so that materials in different areas can be more fully mixed together, avoiding dead corners, improving the uniformity of mixing, and enabling the materials to be more evenly distributed during the stirring process, thereby ensuring that each part of the material can be evenly stirred and heated. It can also reduce the adhesion of the material to the inner wall of the container, because it is difficult for the material to stay in the same position for a long time during constant movement.

[0023] In the above embodiment, as a preferred solution, a discharge mechanism 2 is provided at the bottom of the protective shell 1, and the discharge mechanism 2 includes a sealing plate 201, a discharge port 202 and a control valve 203. The top of the sealing plate 201 is connected to the bottom of the protective shell 1 by bolts, and the discharge port 202 is opened on the inner bottom wall of the sealing plate 201. The top of the control valve 203 is connected to the bottom of the sealing plate 201 by bolts and is located below the discharge port 202. Through the setting of the sealing plate 201, the bottom of the protective shell 1 can be sealed, and the setting of the discharge port 202 can discharge the prepared material downward, and the setting of the control valve 203 can control the discharge and stop of the material at the discharge port 202, thereby facilitating the operation of the staff.

[0024] In the above embodiment, as a preferred scheme, a support mechanism 3 is arranged below the sealing plate 201, and the support mechanism 3 includes a support seat 301, support legs 302 and an anti-skid pad 303. The top of the support seat 301 is connected to the bottom of the sealing plate 201 by bolts, and a plurality of support legs 302 are respectively fixedly installed on the bottom of the support seat 301, and a plurality of anti-skid pads 303 are respectively fixedly installed on the bottom of the support legs 302. Through the setting of the support seat 301, it can cooperate with the support legs 302 to provide a better supporting effect for the device and ensure the stability of the device during operation. Through the setting of the anti-skid pad 303, the stability between the bottom of the device and the ground can be improved, and a better anti-skid and buffering effect can be achieved.

[0025] In the above embodiment, as a preferred scheme, the top of the protective shell 1 is detachably connected with a protective mechanism 5, and the protective mechanism 5 includes a protective cover 501, a mounting hole 506 and a bearing 502. The bottom of the protective cover 501 is connected to the top of the protective shell 1 by bolts, and the mounting hole 506 is opened in the middle of the top of the protective cover 501. The outer surface of the bearing 502 is fixedly installed with the inner wall of the mounting hole 506. Through the setting of the protective cover 501, the top of the protective shell 1 can be sealed, and the matching setting of the mounting hole 506 and the bearing 502 can provide an installation position and rotation assistance for the motor 602 and the transmission shaft 701, and the bearing 502 can assist the rotation of the transmission shaft 701, thereby improving the transmission stability of the transmission shaft 701.

[0026] In the above embodiment, as a preferred scheme, the protection mechanism 5 also includes a feed port 503, a delivery pipe 504 and a pressure gauge 505. The feed port 503 is opened at the top of the protection cover 501 on one side of the mounting hole 506. The end of the delivery pipe 504 is connected to the top of the feed port 503 by bolts. The pressure gauge 505 is fixedly installed on the top of the protection cover 501 on the other side of the mounting hole 506. Through the setting of the feed port 503, it can cooperate with the delivery pipe 504 to deliver the prepared materials and chemical foaming agent into the interior of the device, thereby facilitating the staff to perform the feeding operation. Through the setting of the pressure gauge 505, it is convenient for the staff to observe the pressure inside the device.

[0027] In the above embodiment, as a preferred solution, a driving mechanism 6 is provided on the top of the protective cover 501, and the driving mechanism 6 includes a fixed plate 601 and a motor 602. The bottom of the fixed plate 601 is connected to the middle of the top of the protective cover 501 by bolts, and the motor 602 is fixedly installed in the middle of the top of the fixed plate 601. Through the setting of the fixed plate 601, it can be installed and fixed on the top of the protective cover 501, thereby providing an installation position for the motor 602, thereby ensuring the working stability of the motor 602, and through the setting of the motor 602, it can provide power for the rotation of the transmission shaft 701.

[0028] In the above embodiment, as a preferred scheme, the top of the outer surface of the transmission shaft 701 is fixedly installed with the inner ring of the bearing 502, the bottom of the outer surface of the transmission shaft 701 is rotatably connected to the middle of the inner wall of the discharge port 202, and the top of the transmission shaft 701 is connected to the output end of the motor 602 through a key. Through the setting of the transmission shaft 701, the power of the motor 602 can be transmitted, thereby rotating the stirring blade 702 and the push plate 703.

[0029] In the above embodiment, as a preferred solution, the mixing mechanism 7 also includes a push plate 703 and a drainage groove 704. The push plate 703 is fixedly installed on the outer wall of the transmission shaft 701 and is located below the stirring blade 702. A plurality of drainage grooves 704 are respectively opened on the outer wall of the push plate 703. Through the setting of the push plate 703, the material at the bottom of the device can be stirred and mixed, and the setting of the drainage groove 704 can reduce the resistance of the push plate 703 during rotation, and also facilitate the flow of materials, thereby achieving a better mixing effect.

[0030] In the above embodiment, as a preferred solution, a positioning sleeve is provided on the surface of the transmission shaft 701, and the transmission shaft 701 is located on the surface of the positioning sleeve and communicates with the positioning sleeve through a through hole provided thereon, a flow cavity is provided inside the stirring blade 702, and the flow cavity passes through the through hole provided on the transmission shaft 701, and an air outlet 900 is provided on the surface of the stirring blade 702; By injecting gas into the stirred foaming material through the gas outlet 900 on the stirring blade 702, it can be ensured that the gas is evenly distributed in the foaming material, bubbles can be avoided from being concentrated in certain areas, and the size and distribution of bubbles in the entire foaming material can be ensured to be more uniform. The flow rate and pressure of gas injection can be adjusted to control the bubble generation rate and size during the foaming process. The positioning sleeve is used to connect with the gas source, and the gas is discharged from the gas outlet 900 after passing through the transmission shaft 701 and the stirring blade 702. During the foaming process, carbon dioxide or nitrogen is evenly injected through the gas outlet 900 on the stirring blade 702, which can not only assist the stirring blade 702 to generate vortexes and improve the uniformity of mixing, but also assist in forming a uniform foam structure (when gas is injected into the foaming material (usually a liquid or a viscous medium), the surface tension of the gas will prompt them to form bubbles in the liquid. The gas molecules in the liquid are affected by the surface tension of the liquid and will naturally form spherical small bubbles to reduce the surface area), thereby improving the strength and thermal insulation performance of the material.

[0031] In the present invention, the working steps of the device are as follows: 1. First, the device is placed in a suitable position with the aid of the support legs 302 and the anti-slip pads 303 to ensure the support stability of the device, and then the material is fed into the device with the aid of the feed port 503 and the conveying pipe 504; 2. Secondly, start the motor 602 to drive the transmission shaft 701 to rotate rapidly, thereby driving the stirring blade 702, the push plate 703 and the scraper 705 to rotate rapidly, thereby achieving rapid mixing of the materials; 3. Then, the heating wire 402 is started to heat the material inside the device, thereby rapidly heating the material and providing a suitable reaction environment for the chemical foaming agent; 4. Finally, after the foaming is completed, open the control valve 203 below to discharge the foamed material downward, then turn off the heating wire 402 and the motor 602, disassemble the sealing plate 201 and the protective cover 501 from the protective shell 1, and clean the device.

[0032] 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 defined by the appended claims and their equivalents.

Claims

1. A reaction device for preparing a foam dressing, characterized in that: It comprises a protective shell (1), a heating mechanism (4) and a mixing mechanism (7), wherein: The protective shell (1) has a reaction chamber inside, which is used to carry the foaming material to be reacted; The heating mechanism (4) comprises a sleeve (401), a heating wire (402) and a heat-conducting protrusion (403); the sleeve (401) is detachably connected in the reaction chamber; the sleeve (401) is a hollow cylindrical structure; the heating wire (402) is arranged in the sleeve (401) along the extension direction of the sleeve (401); and the heat-conducting protrusion (403) is arranged on the inner wall of the sleeve (401) at a position corresponding to the heating wire (402); The mixing mechanism (7) comprises a transmission shaft (701), stirring blades (702) and a scraper (705); the transmission shaft (701) is rotatably connected to the protective shell (1) and is at least partially located in the reaction chamber; the stirring blades (702) are evenly distributed on the surface of the transmission shaft (701) and are arranged in sequence along the extension direction of the transmission shaft (701); each stirring blade (702) is staggered with an adjacent stirring blade (702) in the extension direction of the transmission shaft (701); The scraper (705) is fixedly connected to the end surface of the stirring blade (702), and a scraper tooth is fixedly connected to the surface of the scraper (705) facing the inner wall of the sleeve (401), and the scraper tooth corresponds to the gap between adjacent heat-conducting protrusions (403).

2. A reaction device for preparing a foam dressing according to claim 1, characterized in that: The cross-section of the heat-conducting protrusion (403) is arranged in a trapezoidal shape, and the longer edge of the trapezoid fits the inner wall of the sleeve (401), and the shorter edge of the trapezoid faces the scraper (705). The scraping teeth corresponding to the heat-conducting protrusion (403) are also arranged in a trapezoidal shape to improve the strength of the scraping teeth.

3. The reaction device for preparing a foam dressing according to claim 1, characterized in that: A discharge mechanism (2) is provided at the bottom of the protective shell (1), the discharge mechanism (2) comprising a sealing plate (201), a discharge port (202) and a control valve (203), the top of the sealing plate (201) being connected to the bottom of the protective shell (1) via bolts, the discharge port (202) being opened on the inner bottom wall of the sealing plate (201), the top of the control valve (203) being connected to the bottom of the sealing plate (201) via bolts, and being located below the discharge port (202).

4. A reaction device for preparing a foam dressing according to claim 3, characterized in that: A support mechanism (3) is provided below the sealing plate (201), the support mechanism (3) comprising a support seat (301), support legs (302) and an anti-skid pad (303), the top of the support seat (301) being connected to the bottom of the sealing plate (201) via bolts, a plurality of the support legs (302) being respectively fixedly mounted on the bottom of the support seat (301), and a plurality of the anti-skid pads (303) being respectively fixedly mounted on the bottom of the support legs (302).

5. The reaction device for preparing a foam dressing according to claim 3, characterized in that: The top of the protective shell (1) is detachably connected to a protective mechanism (5), the protective mechanism (5) comprising a protective cover (501), a mounting hole (506) and a bearing (502), the bottom of the protective cover (501) being connected to the top of the protective shell (1) via bolts, the mounting hole (506) being opened in the middle of the top of the protective cover (501), and the outer surface of the bearing (502) being fixedly mounted to the inner side wall of the mounting hole (506).

6. A reaction device for preparing a foam dressing according to claim 5, characterized in that: The protection mechanism (5) further comprises a feed port (503), a delivery pipe (504) and a pressure gauge (505); the feed port (503) is opened at the top of the protection cover (501) on one side of the mounting hole (506); the end of the delivery pipe (504) is connected to the top of the feed port (503) by bolts; and the pressure gauge (505) is fixedly mounted on the top of the protection cover (501) on the other side of the mounting hole (506).

7. A reaction device for preparing a foam dressing according to claim 5, characterized in that: A driving mechanism (6) is provided on the top of the protective cover (501), the driving mechanism (6) comprising a fixing plate (601) and a motor (602), the bottom of the fixing plate (601) being connected to the middle of the top of the protective cover (501) via bolts, and the motor (602) being fixedly mounted on the middle of the top of the fixing plate (601).

8. A reaction device for preparing a foam dressing according to claim 7, characterized in that: The top of the outer surface of the transmission shaft (701) is fixedly mounted to the inner ring of the bearing (502), the bottom of the outer surface of the transmission shaft (701) is rotatably connected to the middle of the inner wall of the discharge port (202), and the top of the transmission shaft (701) is connected to the output end of the motor (602) via a key.

9. The reaction device for preparing a foam dressing according to claim 1, characterized in that: The mixing mechanism (7) further comprises a push plate (703) and a drainage groove (704); the push plate (703) is fixedly mounted on the outer wall of the transmission shaft (701) and is located below the stirring blade (702); and a plurality of drainage grooves (704) are respectively provided on the outer wall of the push plate (703).

10. The reaction device for preparing a foam dressing according to claim 1, characterized in that: The surface of the transmission shaft (701) is sleeved with a positioning sleeve, and the transmission shaft (701) is located on the surface of the positioning sleeve and is connected to the positioning sleeve via a through hole provided thereon; a circulation cavity is provided inside the stirring blade (702), and the circulation cavity passes through the through hole provided on the transmission shaft (701); and an air outlet (900) is provided on the surface of the stirring blade (702).

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