Method and device for promoting sand spitting of razor clams through alternate salinity

Abstract

The invention discloses a method and device for promoting sand spitting of razor clams through alternate salinity, and relates to the technical field of aquaculture, and the method is characterized by comprising the following steps: step 1, cleaning: selecting fresh razor clams as raw materials, and cleaning pollutants on the surfaces of the razor clams with clear water; step 2, purification: alternately cleaning the razor clams with high-salinity and low-salinity artificial seawater, and cleaning silt in viscera of the razor clams; and step 3, nutrition enhancement: feeding the razor clams with a microencapsulated flavor enhancer until the activity of the razor clams is improved. The razor clam breeding and purifying method has the advantages that razor clams are bred and purified in a mode of setting alternate salinity, so that the sand spitting rate of the razor clams is remarkably increased on the premise of ensuring the survival rate of the razor clams, and industrial and standardized production is realized based on a convenient operation process; meanwhile, the razor clams are fed with the microencapsulated flavor enhancer, so that the natural flavor and taste of the razor clams are enhanced, the vitality of the razor clams is remarkably enhanced, long-distance transportation and sales of the razor clams are facilitated, and the razor clams have green and healthy effects.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture, and more particularly to a method and a device for promoting sand spitting of razor clams by alternating salinity. Background Art

[0002] Sinovovacula constricta is a typical burrowing bivalve mollusc that can tolerate a wide range of temperatures and salts, and is one of the four traditional aquacultured shellfish in my country. Since Sinovovacula constricta is a filter-feeding organism with poor migration ability, once its living environment is polluted, pollutants will not only adhere to the body surface, but also enter the body through breathing and feeding activities to accumulate and form biotoxins, which will eventually endanger human health through the food chain. Therefore, Sinovovacula constricta purification is a key link in reducing the risk of disease.

[0003] At present, the purification technology of Sinonovacula constricta can be summarized as seawater temporary culture purification method, water disinfection and sterilization method, chemical reagent removal method and biological metabolism method, etc. Different purification technologies have their own advantages and limitations. Compared with chemical methods, consumers are more likely to use the traditional seawater temporary culture purification method, which is simple and does not use chemical reagents, but is time-consuming and has low economic benefits. It is not conducive to the industrial application of razor clam purification and needs to be improved. Summary of the invention

[0004] In view of this, the first purpose of this application is to provide a method and device for promoting sand spitting of razor clams by alternating salinity, so as to improve industrial production efficiency and achieve green and safe aquaculture purification. The specific scheme is as follows: A method for promoting sand spitting of razor clams by alternating salinity, comprising the following steps: Step 1, cleaning: select fresh clams as raw materials, and clean the pollutants on the surface of the clams with clean water; Step 2, purification: using artificial seawater of high and low salinity to wash the clams alternately and clean the mud and sand in the internal organs of the clams; Step 3: Nutritional enhancement: Feed clams with microencapsulated flavor enhancers until the activity of the clams is improved.

[0005] Preferably, the salinity of the high- and low-salinity artificial seawater is 22-28, and the salinity change rate is 2 / 5min.

[0006] Preferably: the feeding time of the microencapsulated flavor enhancer is 0.5-1h.

[0007] Preferably: the microencapsulated flavor enhancer comprises an outer shell and a drug, wherein the drug consists of 0.1 mg / g betaine, 0.2 mg / g glutamic acid, 1 mg / g glycine and water as a solvent.

[0008] Preferably: the outer shell comprises sodium alginate and chitosan, the core-to-wall ratio of the microencapsulated flavor enhancer is 1 g:10 ml, and the embedding temperature is 50-55°C.

[0009] Preferably, the sodium alginate and chitosan are polymerized by thermal initiation to obtain the outer shell, and the air inlet drying temperature of the spray drying is controlled to be 150-160° C. and the feed rate is 10-15 mL / min.

[0010] The second object of the present invention is to provide a device for promoting sand spitting out of razor clams by alternating salinity, which is used to implement the method for promoting sand spitting out of razor clams by alternating salinity as described above, comprising a cleaning frame and a vertical frame inserted in the cleaning frame; an artificial seawater regulator, a nutrient enhancement regulator and a drain pipe are arranged on the outside of the cleaning frame; the vertical frame is used to place razor clams upright and is formed with holes, the artificial seawater regulator is used to introduce high and low salinity artificial seawater into the cleaning frame, the nutrient enhancement regulator is used to introduce microencapsulated flavor enhancer into the cleaning frame, and the drain pipe is used to discharge wastewater and settled sediment to the outside.

[0011] Preferably: a plurality of vertical dividing plates are arranged at equal intervals in the vertical frame, a vertical upright cavity is formed between two adjacent vertical dividing plates, and the vertical upright cavity matches the vertical state of the clams.

[0012] Preferably: two artificial seawater regulators are provided and are located at the front end of the cleaning frame; the nutrient enrichment regulator and the drain pipe are located at the rear end of the cleaning frame.

[0013] Preferably, the two artificial seawater regulators are arranged vertically and distributed at the front end of the cleaning frame, the drain pipe is located at the bottom of the rear end of the cleaning frame, and the nutrient enrichment regulator is located at the upper end of the drain pipe.

[0014] It can be seen from the above scheme that the present application provides a method and device for promoting sand spitting of razor clams by alternating salinity. The method for promoting sand spitting of razor clams by alternating salinity performs aquaculture purification treatment of razor clams by setting alternating salinity, so as to significantly improve the sand spitting rate of razor clams while ensuring the survival rate of razor clams, thereby realizing industrialized and standardized production based on a convenient operation process; at the same time, by feeding razor clams with microencapsulated flavor enhancers, the vitality of razor clams will be significantly enhanced while enhancing the natural flavor and taste of razor clams, so as to facilitate the long-distance transportation and sales of razor clams, and have a green and healthy effect. The device for promoting sand spitting of razor clams by alternating salinity achieves efficient purification treatment of razor clams by cooperating with artificial seawater regulators and nutrient enhancement regulators. It has a simple structure and high adaptability, so it is suitable for large-scale laying and application, so as to significantly improve the economic benefits of aquaculture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of this embodiment.

[0016] Explanation of the accompanying drawings: 1. Cleaning frame; 2. Vertical frame; 21. Vertical dividing plate; 22. Vertical upright cavity; 3. Artificial seawater regulator; 4. Nutritional enhancement regulator; 5. Drain pipe. DETAILED DESCRIPTION

[0017] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0018] The following is a detailed description of a method and device for promoting sand spitting out of razor clams by alternating salinity according to the present application.

[0019] A method for promoting sand spitting of razor clams by alternating salinity, comprising the following steps: Step 1, cleaning: select fresh clams as raw materials, and clean the pollutants on the surface of the clams with clean water; Step 2, purification: using high-salinity and low-salinity artificial seawater to alternately clean the clams, and controlling the salinity of the high-salinity and low-salinity artificial seawater to be 22-28, and the salinity change rate to be 2 / 5min, to clean the mud and sand in the internal organs of the clams; Step 3, nutritional enhancement: feed the clams with microencapsulated flavor enhancers for 0.5-1h, until the activity of the clams is improved.

[0020] The microencapsulated flavor enhancer comprises an outer shell and a medicine, wherein the medicine is composed of 0.1 mg / g betaine, 0.2 mg / g glutamic acid, 1 mg / g glycine and water as a solvent. The outer shell comprises sodium alginate and chitosan, the core-wall ratio of the microencapsulated flavor enhancer is 1 g:10 ml, and the embedding temperature is 50-55° C. The outer shell is obtained by thermally initiating polymerization of sodium alginate and chitosan, and the air inlet drying temperature of the spray drying is controlled to be 150-160° C., and the feed rate is 10-15 mL / min.

[0021] like Figure 1As shown, a device for promoting sand spitting of razor clams by alternating salinity is used to implement the method for promoting sand spitting of razor clams by alternating salinity as described above, comprising a cleaning frame 1 and a vertical frame 2 plugged into the cleaning frame 1. An artificial seawater regulator 3, a nutrient enhancement regulator 4 and a drain pipe 5 are arranged on the outside of the cleaning frame 1. Among them, the vertical frame 2 is used to place razor clams upright and is formed with holes, the artificial seawater regulator 3 is used to introduce high and low salinity artificial seawater into the cleaning frame 1, the nutrient enhancement regulator 4 is used to introduce microencapsulated flavor enhancers into the cleaning frame 1, and the drain pipe 5 is used to discharge wastewater and sediment to the outside. It should be mentioned that a plurality of vertical dividing plates 21 are arranged and distributed at equal intervals in the vertical frame 2, and a vertical upright cavity 22 is formed between two adjacent vertical dividing plates 21, and the vertical upright cavity 22 matches the vertical state of the razor clams.

[0022] In order to further improve the purification effect of razor clams, two artificial seawater regulators 3 are provided and located at the front end of the cleaning frame 1. The nutrition enhancement regulator 4 and the drain pipe 5 are located at the rear end of the cleaning frame 1. The two artificial seawater regulators 3 are arranged up and down and distributed at the front end of the cleaning frame 1, the drain pipe 5 is located at the bottom of the rear end of the cleaning frame 1, and the nutrition enhancement regulator 4 is located at the upper end of the drain pipe 5. Example

[0023] A method for promoting sand spitting of razor clams by alternating salinity, comprising the following steps: Step 1, cleaning: select fresh clams as raw materials, and clean the pollutants on the surface of the clams with clean water; Step 2, purification: using high-salinity and low-salinity artificial seawater to alternately clean the clams, and controlling the salinity of the high-salinity and low-salinity artificial seawater to be 22-28, and the salinity change rate to be 2 / 5min, to clean the mud and sand in the internal organs of the clams; Step 3, nutritional enhancement: feed the clams with microencapsulated flavor enhancers for 0.5-1h, until the activity of the clams is improved.

[0024] The microencapsulated flavor enhancer includes an outer shell and a medicine, wherein the medicine is composed of 0.1 mg / g betaine, 0.2 mg / g glutamic acid, 1 mg / g glycine and water as a solvent. The outer shell includes sodium alginate and chitosan, the core-wall ratio of the microencapsulated flavor enhancer is 1g:10ml, and the embedding temperature is 50°C. The outer shell is obtained by thermally initiating polymerization of sodium alginate and chitosan, and the air inlet drying temperature of the spray drying is controlled to be 150°C, and the feed rate is 10mL / min.

[0025] like Figure 1As shown, a device for promoting sand spitting of razor clams by alternating salinity is used to implement the method for promoting sand spitting of razor clams by alternating salinity as described above, comprising a cleaning frame 1 and a vertical frame 2 plugged into the cleaning frame 1. An artificial seawater regulator 3, a nutrient enhancement regulator 4 and a drain pipe 5 are arranged on the outside of the cleaning frame 1. Among them, the vertical frame 2 is used to place razor clams upright and is formed with holes, the artificial seawater regulator 3 is used to introduce high and low salinity artificial seawater into the cleaning frame 1, the nutrient enhancement regulator 4 is used to introduce microencapsulated flavor enhancers into the cleaning frame 1, and the drain pipe 5 is used to discharge wastewater and sediment to the outside. It should be mentioned that a plurality of vertical dividing plates 21 are arranged and distributed at equal intervals in the vertical frame 2, and a vertical upright cavity 22 is formed between two adjacent vertical dividing plates 21, and the vertical upright cavity 22 matches the vertical state of the razor clams.

[0026] In order to further improve the purification effect of razor clams, two artificial seawater regulators 3 are provided and located at the front end of the cleaning frame 1. The nutrition enhancement regulator 4 and the drain pipe 5 are located at the rear end of the cleaning frame 1. The two artificial seawater regulators 3 are arranged up and down and distributed at the front end of the cleaning frame 1, the drain pipe 5 is located at the bottom of the rear end of the cleaning frame 1, and the nutrition enhancement regulator 4 is located at the upper end of the drain pipe 5.

[0027] After testing, the clams obtained by the method of promoting sand spitting out of clams by alternating salinity in Example 1 of the present application have high cleaning efficiency and complete the removal of mud and sand from the clam's internal organs within 120 minutes; and after vitality testing, they have complete vitality and strong spitting out. Example

[0028] A method for promoting sand spitting of razor clams by alternating salinity, comprising the following steps: Step 1, cleaning: select fresh clams as raw materials, and clean the pollutants on the surface of the clams with clean water; Step 2, purification: using high-salinity and low-salinity artificial seawater to alternately clean the clams, and controlling the salinity of the high-salinity and low-salinity artificial seawater to be 22-28, and the salinity change rate to be 2 / 5min, to clean the mud and sand in the internal organs of the clams; Step 3, nutritional enhancement: feed the clams with microencapsulated flavor enhancers for 0.5-1h, until the activity of the clams is improved.

[0029] The microencapsulated flavor enhancer includes an outer shell and a medicine, wherein the medicine is composed of 0.1 mg / g betaine, 0.2 mg / g glutamic acid, 1 mg / g glycine and water as a solvent. The outer shell includes sodium alginate and chitosan, the core-wall ratio of the microencapsulated flavor enhancer is 1g:10ml, and the embedding temperature is 53°C. The outer shell is obtained by thermally initiating polymerization of sodium alginate and chitosan, and the air inlet drying temperature of the spray drying is controlled to be 155°C, and the feed rate is 13mL / min.

[0030] like Figure 1 As shown, a device for promoting sand spitting of razor clams by alternating salinity is used to implement the method for promoting sand spitting of razor clams by alternating salinity as described above, comprising a cleaning frame 1 and a vertical frame 2 plugged into the cleaning frame 1. An artificial seawater regulator 3, a nutrient enhancement regulator 4 and a drain pipe 5 are arranged on the outside of the cleaning frame 1. Among them, the vertical frame 2 is used to place razor clams upright and is formed with holes, the artificial seawater regulator 3 is used to introduce high and low salinity artificial seawater into the cleaning frame 1, the nutrient enhancement regulator 4 is used to introduce microencapsulated flavor enhancers into the cleaning frame 1, and the drain pipe 5 is used to discharge wastewater and sediment to the outside. It should be mentioned that a plurality of vertical dividing plates 21 are arranged and distributed at equal intervals in the vertical frame 2, and a vertical upright cavity 22 is formed between two adjacent vertical dividing plates 21, and the vertical upright cavity 22 matches the vertical state of the razor clams.

[0031] In order to further improve the purification effect of razor clams, two artificial seawater regulators 3 are provided and located at the front end of the cleaning frame 1. The nutrition enhancement regulator 4 and the drain pipe 5 are located at the rear end of the cleaning frame 1. The two artificial seawater regulators 3 are arranged up and down and distributed at the front end of the cleaning frame 1, the drain pipe 5 is located at the bottom of the rear end of the cleaning frame 1, and the nutrition enhancement regulator 4 is located at the upper end of the drain pipe 5.

[0032] After testing, the clams obtained by the method of promoting sand spitting out of clams by alternating salinity in Example 2 of the present application have high cleaning efficiency and complete the removal of mud and sand from the clam's internal organs within 120 minutes; and after vitality testing, they have complete vitality and strong spitting out. Example

[0033] A method for promoting sand spitting of razor clams by alternating salinity, comprising the following steps: Step 1, cleaning: select fresh clams as raw materials, and clean the pollutants on the surface of the clams with clean water; Step 2, purification: using high-salinity and low-salinity artificial seawater to alternately clean the clams, and controlling the salinity of the high-salinity and low-salinity artificial seawater to be 22-28, and the salinity change rate to be 2 / 5min, to clean the mud and sand in the internal organs of the clams; Step 3, nutritional enhancement: feed the clams with microencapsulated flavor enhancers for 0.5-1h, until the activity of the clams is improved.

[0034] The microencapsulated flavor enhancer includes an outer shell and a medicine, wherein the medicine is composed of 0.1 mg / g betaine, 0.2 mg / g glutamic acid, 1 mg / g glycine and water as a solvent. The outer shell includes sodium alginate and chitosan, the core-wall ratio of the microencapsulated flavor enhancer is 1g:10ml, and the embedding temperature is 55°C. The outer shell is obtained by thermally initiating polymerization of sodium alginate and chitosan, and the air inlet drying temperature of the spray drying is controlled to be 160°C, and the feed rate is 15mL / min.

[0035] like Figure 1 As shown, a device for promoting sand spitting of razor clams by alternating salinity is used to implement the method for promoting sand spitting of razor clams by alternating salinity as described above, comprising a cleaning frame 1 and a vertical frame 2 plugged into the cleaning frame 1. An artificial seawater regulator 3, a nutrient enhancement regulator 4 and a drain pipe 5 are arranged on the outside of the cleaning frame 1. Among them, the vertical frame 2 is used to place razor clams upright and is formed with holes, the artificial seawater regulator 3 is used to introduce high and low salinity artificial seawater into the cleaning frame 1, the nutrient enhancement regulator 4 is used to introduce microencapsulated flavor enhancers into the cleaning frame 1, and the drain pipe 5 is used to discharge wastewater and sediment to the outside. It should be mentioned that a plurality of vertical dividing plates 21 are arranged and distributed at equal intervals in the vertical frame 2, and a vertical upright cavity 22 is formed between two adjacent vertical dividing plates 21, and the vertical upright cavity 22 matches the vertical state of the razor clams.

[0036] In order to further improve the purification effect of razor clams, two artificial seawater regulators 3 are provided and located at the front end of the cleaning frame 1. The nutrition enhancement regulator 4 and the drain pipe 5 are located at the rear end of the cleaning frame 1. The two artificial seawater regulators 3 are arranged up and down and distributed at the front end of the cleaning frame 1, the drain pipe 5 is located at the bottom of the rear end of the cleaning frame 1, and the nutrition enhancement regulator 4 is located at the upper end of the drain pipe 5.

[0037] After testing, the clams obtained by the method of promoting sand spitting out of clams by alternating salinity in Example 3 of the present application have high cleaning efficiency and complete the removal of mud and sand from the clam's internal organs within 120 minutes; and after vitality testing, they have complete vitality and strong spitting out.

[0038] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that in Comparative Example 1, artificial seawater with a salinity of 22 is used to clean clams.

[0039] After testing, the clams obtained by the method of promoting sand spitting out of clams by alternating salinity in comparative example 1 of the present application have high cleaning efficiency and complete the removal of mud and sand from the clam's internal organs within 275 minutes; and after vitality testing, they have strong vitality and the throughput capacity is not significantly weakened.

[0040] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that in Comparative Example 2, artificial seawater with a salinity of 28 is used to clean clams.

[0041] After testing, the clams obtained by the method of promoting sand spitting out of clams by alternating salinity in comparative example 2 of the present application have high cleaning efficiency and complete the removal of mud and sand from the clam's internal organs within 300 minutes; and after vitality testing, they have strong vitality and the throughput capacity is not significantly weakened.

[0042] Comparative Example 3 The difference between Comparative Example 3 and Example 1 is that in Comparative Example 3, no microencapsulated flavor enhancer is added for feeding.

[0043] After testing, the clams obtained by the method of promoting sand spitting out of clams by alternating salinity in comparative example three of the present application have high cleaning efficiency and complete the removal of mud and sand from the clam's internal organs within 120 minutes; and after vitality testing, they have a certain vitality, which is significantly weaker than that of embodiment one.

[0044] It should be mentioned that the detection of vitality is based on the judgment of the inspector based on experience, and the cleaning time of the mud and sand in the internal organs of the razor clams is detected every five minutes, and at least five samples are detected simultaneously. In summary, the present application provides a method and device for promoting sand spitting of razor clams by alternating salinity. The method for promoting sand spitting of razor clams by alternating salinity performs a breeding and purification process of razor clams by setting an alternating salinity, so as to significantly improve the sand spitting rate of razor clams while ensuring the survival rate of razor clams, thereby realizing industrialized and standardized production based on a convenient operating process; at the same time, feeding razor clams with microencapsulated flavor enhancers will significantly enhance the vitality of razor clams while enhancing the natural flavor and taste of razor clams, so as to facilitate the long-distance transportation and sales of razor clams, and have a green and healthy effect. The device for promoting sand spitting of razor clams by alternating salinity realizes efficient purification of razor clams by cooperating with the artificial seawater regulator 3 and the nutrient enhancement regulator 4. It has a simple structure and high adaptability, so it is suitable for large-scale laying and application, so as to significantly improve the economic benefits of aquaculture.

[0045] The "first", "second", "third", "fourth", etc. (if any) referred to in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods or devices.

[0046] It should be noted that the descriptions involving "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for promoting sand spitting of razor clams by alternating salinity, characterized in that: The steps include: Step 1, cleaning: select fresh clams as raw materials, and clean the pollutants on the surface of the clams with clean water; Step 2, purification: using artificial seawater of high and low salinity to wash the clams alternately and clean the mud and sand in the internal organs of the clams; Step 3: Nutritional enhancement: Feed clams with microencapsulated flavor enhancers until the activity of the clams is improved.

2. The method for promoting sand spitting of razor clams by alternating salinity according to claim 1, characterized in that: The salinity of the high- and low-salinity artificial seawater is 22-28, and the salinity change rate is 2 / 5min.

3. The method of promoting sand spitting of razor clams by alternating salinity according to claim 1, characterized in that: The feeding time of the microencapsulated flavor enhancer is 0.5-1h.

4. The method of promoting sand spitting of razor clams by alternating salinity according to claim 1, characterized in that: The microencapsulated flavor enhancer comprises an outer shell and a drug, wherein the drug consists of 0.1 mg / g betaine, 0.2 mg / g glutamic acid, 1 mg / g glycine and water as a solvent.

5. The method of promoting sand spitting of razor clams by alternating salinity according to claim 1, characterized in that: The outer shell comprises sodium alginate and chitosan, the core-to-wall ratio of the microencapsulated flavor enhancer is 1g:10ml, and the embedding temperature is 50-55°C.

6. The method of promoting sand spitting of razor clams by alternating salinity according to claim 5, characterized in that: The sodium alginate and chitosan are polymerized by thermal initiation to obtain the outer shell, and the air inlet drying temperature of the spray drying is controlled to be 150-160° C. and the feed rate is controlled to be 10-15 mL / min.

7. A device for promoting sand spitting out of razor clams by alternating salinity, used for implementing the method for promoting sand spitting out of razor clams by alternating salinity as claimed in any one of claims 1 to 6, characterized in that: The invention comprises a cleaning frame (1) and a vertical frame (2) inserted into the cleaning frame (1); an artificial seawater regulator (3), a nutrition enhancement regulator (4) and a drainage pipe (5) are arranged on the outside of the cleaning frame (1); the vertical frame (2) is used for placing clams upright and is formed with holes; the artificial seawater regulator (3) is used for introducing artificial seawater of high or low salinity into the cleaning frame (1); the nutrition enhancement regulator (4) is used for introducing a microencapsulated flavor enhancer into the cleaning frame (1); and the drainage pipe (5) is used for discharging wastewater and settled sediment to the outside.

8. The device for promoting sand spitting of razor clams by alternating salinity according to claim 7, characterized in that: A plurality of vertical partition plates (21) are arranged at equal intervals in the vertical frame (2), a vertical upright cavity (22) is formed between two adjacent vertical partition plates (21), and the vertical upright cavity (22) matches the vertical state of the razor clam.

9. The device for promoting sand spitting of razor clams by alternating salinity according to claim 7, characterized in that: Two artificial seawater regulators (3) are provided and are located at the front end of the cleaning frame (1); the nutrition enhancement regulator (4) and the drainage pipe (5) are located at the rear end of the cleaning frame (1).

10. The device for promoting sand spitting of razor clams by alternating salinity according to claim 9, characterized in that: The two artificial seawater regulators (3) are arranged vertically and distributed at the front end of the cleaning frame (1); the drainage pipe (5) is located at the bottom of the rear end of the cleaning frame (1); and the nutrition enhancement regulator (4) is located at the upper end of the drainage pipe (5).

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