A sterilization device for a pleurotus ostreatus cultivation substrate
By combining steam and microwave sterilization processes, the problem of uneven steam penetration in the seafood mushroom cultivation substrate was solved, achieving uniform heating inside the substrate and improving sterilization efficiency and the growth quality of seafood mushrooms.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN PENGSHENG AGRI TECH
- Filing Date
- 2025-06-03
- Publication Date
- 2026-06-09
AI Technical Summary
In existing technologies, the high-temperature steam in the substrate for seafood mushroom cultivation is difficult to penetrate quickly and evenly, resulting in some microorganisms not being effectively killed. Furthermore, uneven steam distribution creates blind spots in sterilization, affecting the growth and quality of seafood mushrooms.
A dual sterilization process is adopted, combining a steam generator and a microwave generator. High-temperature water vapor and microwave high-frequency electromagnetic field are used to ensure uniform steam penetration through the guide channel and breathable filter screen. The steam is dispersed by the guide plate to achieve uniform temperature in all parts of the substrate.
It improves sterilization efficiency, shortens sterilization time, reduces the risk of contamination by other microorganisms, ensures uniform heating of the seafood mushroom cultivation substrate, reduces sterilization dead zones, and improves the growth quality of seafood mushrooms.
Smart Images

Figure CN224330073U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sterilization technology, specifically a sterilization device for seafood mushroom cultivation substrate. Background Technology
[0002] The substrate for growing seafood mushrooms is usually made of a mixture of agricultural and forestry waste (such as sawdust, cottonseed hulls, and corn cobs), bran, and gypsum. These raw materials naturally carry a large number of miscellaneous bacteria, insect eggs, and pests. High-temperature sterilization is used to control contamination during use.
[0003] Existing technologies rely on a single sterilization method. When dealing with complex and large-volume planting substrates, high-temperature steam cannot penetrate the substrate quickly and evenly, resulting in some microorganisms not being effectively killed. This leads to contamination by other microorganisms, affecting the growth of seafood mushrooms, reducing quality, and causing economic losses to growers. Furthermore, when using moist heat sterilization, the steam is unevenly distributed within the planting substrate, with localized steam accumulation or insufficiency. After entering the sterilization space, the steam cannot be properly guided and dispersed, tending to accumulate near the steam inlet while areas far from the inlet have insufficient steam. This results in inconsistent temperatures across the substrate, causing microorganisms in the cooler parts of the substrate to not be completely killed, creating many dead zones in the sterilization process.
[0004] Therefore, this utility model provides a sterilization device for seafood mushroom cultivation substrate to solve the above problems. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a sterilization device for seafood mushroom cultivation substrate, thus solving the aforementioned problems.
[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a sterilization device for seafood mushroom cultivation substrate, including a sterilization outer cavity, a steam generator, and a sterilization mechanism, wherein the sterilization mechanism is disposed within the sterilization outer cavity;
[0007] The sterilization mechanism includes a sterilization cavity, a connecting pipe welded to the side end of the sterilization cavity, a microwave generator installed inside the connecting pipe, the microwave generator being equipped with a power supply, the connecting pipe being made of aluminum, a flow guide groove being opened inside the sterilization cavity, a threaded connecting bottom pipe being threaded to the rear side of the connecting pipe, a sealing ring being installed between the threaded connecting bottom pipe and the connecting pipe, and a sixth valve being installed at the front end of the connecting pipe.
[0008] Preferably, a second circulation pipe is connected to the lower side of the sterilization outer cavity, and the end of the second circulation pipe away from the sterilization outer cavity is connected to a second valve. The second valve is connected to a steam generator through a pipe. A fourth valve is provided on the pipe between the steam generator and the second valve. A water guide pipe is connected to the end of the steam generator away from the second valve. A connection port plate is fixedly connected to the inner side of the sterilization outer cavity. A fifth valve is provided on the outer side of the water guide pipe. The water guide pipe is connected to a first water pump and a water source.
[0009] Preferably, a heat exchange plate is fixedly connected inside the sterilization outer cavity, and a heat exchange tube and a water supply pipe are fixedly connected to the heat exchange plate. The water supply pipe is connected to an inlet pipe and a first outlet pipe at its front and rear ends, respectively. One end of the heat exchange tube is connected to a third circulation pipe, and the end of the third circulation pipe away from the sterilization outer cavity is connected to a steam generator. A third valve is provided on the third circulation pipe, and the other end of the heat exchange tube is connected to the first circulation pipe. A second water pump and a hot water storage tank are connected to the outside of the first outlet pipe.
[0010] Preferably, a waterproof sealing structure is added at the connection between the connecting tube and the sterilization inner cavity.
[0011] Preferably, the first, second, third, fourth, fifth, and sixth valves are all automatic. When the water temperature in the steam generator reaches the set steam generation temperature, the temperature sensor transmits the signal to the controller. The controller determines that the steam generation conditions are met, and the pressure in the sterilization chamber drops to a set value close to the pressure inside the heat exchange tube. The pressure sensor feeds back the signal to the controller to ensure that the steam can flow smoothly into the heat exchange tube.
[0012] Preferably, the trigger condition is closed, steam recovery continues for a preset time, and a shutdown command is sent after the controller finishes timing. When the water level in the hot water storage tank reaches the set maximum water level line, the level sensor feeds the signal back to the controller, and the controller closes the first valve to prevent hot water from overflowing.
[0013] Preferably, a second sealing ring is provided at the connection between the lid and the sterilization outer cavity.
[0014] Beneficial effects
[0015] This invention provides an ice-breaking mechanism for a snowplow used in the sterilization of seafood mushroom cultivation substrate. Compared with existing technologies, it has the following advantages:
[0016] (1) A sterilization device for seafood mushroom cultivation substrate, comprising a breathable filter, a sterilization chamber, a cover, a second circulation pipe, a guide trough and a steam generator. The steam generator generates high-temperature water vapor, which destroys the microbial cell structure by using the principle of moist heat sterilization. In addition, the device is combined with a microwave generator in the connecting pipe, a threaded connecting bottom pipe and a threaded connecting bottom pipe, and utilizes the high-frequency electromagnetic field of microwaves to improve sterilization efficiency, reduce the risk of contamination by miscellaneous bacteria, achieve uniform internal heating, and further kill residual microorganisms. The dual sterilization process can shorten the sterilization time, improve sterilization efficiency and reduce the risk of contamination by miscellaneous bacteria.
[0017] (2) A sterilization device for seafood mushroom cultivation substrate, which, through the guide plate, ventilation hole structure and guide groove, allows water vapor to enter through the ventilation hole of the sterilization inner cavity and then be dispersed and guided by the guide plate to avoid local steam accumulation, ensure that the steam penetrates the substrate in the breathable filter screen evenly, so that the temperature of each part of the substrate is consistent and the sterilization dead corners are reduced. Attached Figure Description
[0018] Figure 1 This is a side view of the overall structure of this utility model;
[0019] Figure 2 This is a side view of the overall structure of this utility model;
[0020] Figure 3 This is an overall structural diagram of the present invention;
[0021] Figure 4 This is a schematic diagram of the overall structure of this utility model.
[0022] Figure 5 This is a side view of the sterilization inner cavity structure of this utility model;
[0023] Figure 6 This is a side view of the sterilization outer cavity structure of this utility model;
[0024] Figure 7 This is a side view of the guide plate structure of this utility model.
[0025] In the diagram: 1. Sterilization outer cavity; 2. Connecting port plate; 3. Heat exchange tube; 4. Heat exchange plate; 5. Cover; 6. Connector; 7. First handle; 8. First valve; 9. First circulation pipe; 10. Second circulation pipe; 11. Third circulation pipe; 12. Water guide pipe; 13. First water outlet pipe; 14. Second valve; 15. Steam generator; 16. Third valve; 17. Fourth valve; 18. Fifth valve;
[0026] Sterilization mechanism: 191. Breathable filter screen; 192. Second connecting plate; 193. Sterilization inner cavity; 194. Second handle; 195. Third connecting plate; 196. Limiting groove; 197. Guide groove; 198. Connecting pipe; 199. Threaded connection bottom pipe; 1991. Sixth valve; 1992. Guide plate;
[0027] 20. Water inlet pipe; 21. Water delivery pipe. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Example 1:
[0030] Please see Figure 1-7 A sterilization device for a seafood mushroom cultivation substrate includes a sterilization outer cavity 1, a steam generator 15, and a sterilization mechanism, wherein the sterilization mechanism is disposed within the sterilization outer cavity 1.
[0031] The sterilization mechanism includes a sterilization cavity 193, a connecting pipe 198 welded to the side of the sterilization cavity 193, a microwave generator installed inside the connecting pipe 198, the microwave generator being equipped with a power supply, the connecting pipe 198 being made of aluminum, a flow guide groove 197 being opened inside the sterilization cavity 193, a threaded connecting bottom pipe 199 being threaded to the rear side of the connecting pipe 198, a sealing ring being installed between the threaded connecting bottom pipe 199 and the connecting pipe 198, and a sixth valve 1991 being installed at the front end of the connecting pipe 198.
[0032] The lower side of the sterilization outer cavity 1 is connected to a second circulation pipe 10. The end of the second circulation pipe 10 away from the sterilization outer cavity 1 is connected to a second valve 14. The second valve 14 is connected to a steam generator 15 through a pipe. A fourth valve 17 is installed on the pipe between the steam generator 15 and the second valve 14. A water guide pipe 12 is connected to the end of the steam generator 15 away from the second valve 14. A connection port plate 2 is fixedly connected to the inner side of the sterilization outer cavity 1. A fifth valve 18 is installed on the outer side of the water guide pipe 12. The water guide pipe 12 is connected to a first water pump and a water source.
[0033] A heat exchange plate 4 is fixedly connected inside the sterilization outer cavity 1. A heat exchange tube 3 and a water supply pipe 21 are fixedly connected to the heat exchange plate 4. The water supply pipe 21 is connected to an inlet pipe 20 and a first outlet pipe 13 at its front and rear ends, respectively. One end of the heat exchange tube 3 is connected to a third circulation pipe 11. The end of the third circulation pipe 11 away from the sterilization outer cavity 1 is connected to a steam generator 15. A third valve 16 is installed on the third circulation pipe 11. The other end of the heat exchange tube 3 is connected to a first circulation pipe 9. The first outlet pipe 13 is connected to a second water pump and a hot water storage tank.
[0034] Working process: By opening the water pipe 12, water is pumped to the steam generator 15. The steam generator 15 is started to heat the water into steam. The steam is then pumped through the second valve 14 and the second circulation pipe 10 to the vent on the inside of the sterilization chamber 193. The hot air is then guided and evenly distributed to the breathable filter 191 by the guide plate 1992. The steam then passes through the breathable filter 191 to sterilize the seafood mushroom cultivation substrate inside the filter 191 at high temperature. The heated steam flows along the airflow direction through the first valve 8 and the first circulation pipe. 9. The water vapor in the heat exchange tube 3 is cooled into water through the water supply pipe 21 and the heat exchange plate 4. The water in the water supply pipe 21 is heated and then transported to the first water outlet pipe 13 through the water supply pipe 21. After being pumped by the second water pump, it is transported to the hot water storage tank to recover heat. After the water vapor sterilizes the seafood mushroom cultivation substrate, the sixth valve 1991 is opened and the microwave generator in the connecting pipe 198 is started to perform microwave heating, thereby further heating the seafood mushroom cultivation substrate evenly. After heating, the sixth valve 1991 is closed to reduce the impact of water vapor on the microwave generator in the connecting pipe 198.
[0035] Easy to disassemble:
[0036] By turning to connector 6 and using the first handle 7 to open cover 5, unscrew the bolts, and then using the second handle 194 to remove the sterilization inner cavity 193 from the sterilization outer cavity 1, remove the breathable filter 191, and manually rotate the threaded connection bottom tube 199 to facilitate the maintenance of the microwave generator inside the connection tube 198.
[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A sterilization device for a substrate for growing seafood mushrooms, comprising a sterilization outer cavity (1), characterized in that: It also includes a steam generator (15) and a sterilization mechanism, the sterilization mechanism being disposed within the sterilization outer cavity (1); The sterilization mechanism includes a sterilization cavity (193), a connecting pipe (198) welded to the side of the sterilization cavity (193), a microwave generator installed inside the connecting pipe (198), the microwave generator being equipped with a power supply, the connecting pipe (198) being made of aluminum, a flow guide groove (197) being opened inside the sterilization cavity (193), a threaded connecting bottom pipe (199) being threaded to the rear side of the connecting pipe (198), a sealing ring being provided between the threaded connecting bottom pipe (199) and the connecting pipe (198), and a sixth valve (1991) being provided at the front end of the connecting pipe (198).
2. The sterilization equipment for seafood mushroom cultivation substrate according to claim 1, characterized in that: The sterilization outer cavity (1) is connected to a second circulation pipe (10) on its lower side. The end of the second circulation pipe (10) away from the sterilization outer cavity (1) is connected to a second valve (14). The second valve (14) is connected to a steam generator (15) through a pipe. A fourth valve (17) is provided on the pipe between the steam generator (15) and the second valve (14). A water guide pipe (12) is connected to the end of the steam generator (15) away from the second valve (14). A connection port plate (2) is fixedly connected to the inner side of the sterilization outer cavity (1). A fifth valve (18) is provided on the outer side of the water guide pipe (12). The water guide pipe (12) is connected to a first water pump and a water source. A temperature sensor and a pressure sensor are provided inside the sterilization outer cavity (1).
3. The sterilization equipment for seafood mushroom cultivation substrate according to claim 2, characterized in that: A heat exchange plate (4) is fixedly connected inside the sterilization outer cavity (1). A heat exchange tube (3) and a water supply pipe (21) are fixedly connected on the heat exchange plate (4). The water supply pipe (21) is connected to an inlet pipe (20) and a first outlet pipe (13) at its front and rear ends, respectively. One end of the heat exchange tube (3) is connected to a third circulation pipe (11). The end of the third circulation pipe (11) away from the sterilization outer cavity (1) is connected to a steam generator (15). A third valve (16) is provided on the third circulation pipe (11). The other end of the heat exchange tube (3) is connected to a first circulation pipe (9). The first outlet pipe (13) is connected to a second water pump and a hot water storage tank.
4. The sterilization equipment for seafood mushroom cultivation substrate according to claim 3, characterized in that: The sterilization outer cavity (1) is provided with a cover (5), a first valve (8) is fixedly connected to the cover (5), the first valve (8) is connected to the first circulation pipe (9), a first handle (7) is fixedly connected to the cover (5), a connector (6) is fixedly connected to the side end of the sterilization outer cavity (1), and one end of the second circulation pipe (10) is connected to the vent at the bottom end of the sterilization inner cavity (193).
5. The sterilization equipment for seafood mushroom cultivation substrate according to claim 4, characterized in that: A third connecting plate (195) is fixedly connected to the sterilization inner cavity (193). A limiting groove (196) is opened on the third connecting plate (195). A second handle (194) is provided on the third connecting plate (195). A vent hole is provided at the bottom of the sterilization inner cavity (193). A guide plate (1992) is fixedly connected to the bottom of the sterilization inner cavity (193). The sterilization inner cavity (193) is bolted to the sterilization outer cavity (1).
6. The sterilization equipment for seafood mushroom cultivation substrate according to claim 5, characterized in that: The sterilization mechanism also includes a breathable filter (191), which is disposed in the sterilization cavity (193). A second connecting plate (192) is disposed on the inner side of the sterilization cavity (193). The second connecting plate (192) has filter holes. The second connecting plate (192) is fixedly connected to the breathable filter (191) and is placed on the limiting groove (196).