A quick sampling device for pickling liquid of smelly crucian
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-08
- Publication Date
- 2026-08-11
AI Technical Summary
[0004]本实用新型的目的在于提供一种臭鳜鱼腌制液快速取样装置，以解决上述背景技术中提出的单管手动舀取需多次操作获取不同深度样本，单次取样耗时长、易因操作不当破坏发酵环境的问题
[0013]1、通过上、中、下三组取样孔与独立储液腔设计，可同步采集发酵缸内不同深度（0-50cm）的液样，避免传统单点取样导致的层间混合误差，更准确反映发酵过程中盐分、微生物的梯度分布；
Smart Images
Figure CN224624098U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stinky mandarin fish processing technology, specifically a rapid sampling device for stinky mandarin fish pickling liquid. Background Technology
[0002] The salt content in the pickling liquid of stinky mandarin fish gradually increases during the fermentation process, affecting the texture and flavor of the fish meat. The pH value may decrease due to the acid production of microbial metabolism. The microorganisms are mainly lactic acid bacteria (such as Lactobacillus bryonicus accounting for more than 50%). At the same time, it is necessary to monitor safety indicators such as biogenic amines (histamine ≤268.82mg / kg) and nitrite to ensure that they are dynamically balanced within the safe consumption range during fermentation.
[0003] Existing technologies have some drawbacks. Traditional methods use a single tube for manual scooping, requiring multiple operations to obtain samples from different depths (such as the surface, middle, and bottom layers). Each sampling is time-consuming and can easily disrupt the fermentation environment due to improper operation (such as introducing airborne bacteria). In addition, the pickling liquid contains impurities such as fish scraps and spice residues, which can clog detection instruments (such as the inlet of an ion chromatograph) if sampled directly, requiring additional filtration (such as gauze filtration) and increasing the pretreatment time before detection. Utility Model Content
[0004] The purpose of this invention is to provide a rapid sampling device for the marinating liquid of stinky mandarin fish, so as to solve the problems mentioned in the background art, which require multiple operations to obtain samples at different depths when manually scooping with a single tube, and the long time consumption and easy damage to the fermentation environment due to improper operation.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid sampling device for marinating mandarin fish, comprising an axially extending hollow sampling rod, which consists of a handheld section at the operating end and a sampling section at the insertion end. The outer peripheral wall of the sampling section is provided with three sets of sampling holes at equal intervals along its axial direction, corresponding to the upper, middle, and lower layers of the marinating liquid in the fermentation tank. The internal cavity of the sampling section is divided into three independent sealed storage chambers by radially extending partitions. Each storage chamber is connected to a set of sampling holes to form a fluid passage. Each storage chamber is provided with a delivery tube extending along the axis of the sampling rod, with the bottom end of the delivery tube extending to the bottom of the storage chamber. The top of the section extends to the outside of the handheld section to form a branch pipe interface. Three independent branch pipes are connected to the branch pipe interfaces of the corresponding liquid storage chambers. Each branch pipe end is equipped with a receiving plate. The surface of the receiving plate is equipped with a manual water pump connected to the branch pipe for independent extraction of the stratified liquid. The outer peripheral wall of the sampling hole is integrally formed with a protrusion. The outer surface of the protrusion is provided with external threads. The filter sleeve is screwed and fixed to the protrusion through the matching threads on its inner wall. The filter sleeve is equipped with a filter assembly for intercepting solid suspended matter. The bottom of the filter sleeve is integrally fixed with a downward-extending impurity storage container. The inner cavity of the impurity storage container is connected to the inner cavity of the filter sleeve. The bottom of the impurity storage container is detachably connected with a sealing cap.
[0006] According to the preferred embodiment of this technical solution, the filter assembly includes an extension block integrally fixed to the upper end face of the filter sleeve. The extension block is internally threaded with a screw extending into the filter sleeve. One end of the screw is fixed with a knob, and the other end of the screw is rotatably connected to a pressure plate adapted to the inner cavity of the impurity storage container. By rotating the knob, the pressure plate is driven to generate axial thrust, which squeezes the impurities downward into the inner cavity of the impurity storage container.
[0007] In a preferred embodiment of this technical solution, the filter assembly further includes a filter plate independently disposed within the filter sleeve. A filter screen is installed inside the filter plate and covers the corresponding sampling holes. An extension rod is fixedly connected to the outer wall of the pressure plate. A scraper adapted to the surface area of the filter plate is fixedly connected to the end of the extension rod. A serrated array is integrally disposed on the surface of the scraper facing the filter screen.
[0008] Based on the preferred embodiment of this technical solution, a conical block is integrally fixed to the water inlet end of the filter sleeve, and a water inlet hole is opened on the surface of the conical block.
[0009] Based on the preferred embodiment of this technical solution, the outer wall of the handheld section is provided with anti-slip textures at equal intervals along its circumference, and the top of the handheld section is integrally fixed with a hanging ring.
[0010] In a preferred embodiment of this technical solution, a convex ring is fixedly attached to the surface of the sealing cap facing the impurity storage container, and a concave cavity adapted to the convex ring is opened on the surface of the impurity storage container, with the convex ring and the concave cavity being inserted into each other.
[0011] In the preferred embodiment of this technical solution, a permanent magnet is provided on the contact surface between the convex ring and the concave cavity, and the convex ring and the concave cavity are magnetically connected.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. With the design of three sets of sampling holes (upper, middle and lower) and independent liquid storage chambers, liquid samples at different depths (0-50cm) in the fermentation tank can be collected simultaneously, avoiding the interlayer mixing error caused by traditional single-point sampling, and more accurately reflecting the gradient distribution of salt and microorganisms during the fermentation process;
[0014] 2. The integrated design of the filter sleeve and impurity storage container, combined with a detachable sealing cap, enables the interception, compression, and centralized cleaning of solid suspended matter (fish bones, spice particles), reducing the risk of filter clogging and preventing impurities from mixing into the liquid sample and affecting the test results. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of one embodiment of the rapid sampling device for marinating liquid of stinky mandarin fish according to the present invention;
[0016] Figure 2 This is a side sectional view of the present invention;
[0017] Figure 3 This is a schematic diagram of the sampling hole structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the filter assembly of this utility model;
[0019] Figure 5 This is a schematic diagram of the sealing cap of this utility model.
[0020] In the diagram: 1. Handheld section; 2. Sampling section; 3. Sampling hole; 4. Partition; 5. Infusion tube; 6. Branch tube; 7. Receiving plate; 8. Manual water pump; 9. Protrusion; 10. Filter sleeve; 11. Impurity storage container; 12. Sealing cap; 13. Extension block; 14. Screw; 15. Knob; 16. Pressure plate; 17. Filter plate; 18. Filter screen; 19. Extension rod; 20. Scraper; 21. Serrated array; 22. Conical block; 23. Water inlet; 24. Hanging ring; 25. Protruding ring; 26. Concave cavity. Detailed Implementation
[0021] 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.
[0022] Please see Figures 1-5This utility model provides an embodiment: a rapid sampling device for marinating mandarin fish, including an axially extending hollow sampling rod. The sampling rod consists of a handheld section 1 at the operating end and a sampling section 2 at the insertion end. The outer peripheral wall of the sampling section 2 is provided with three sets of sampling holes 3 at equal intervals along its axial direction. Each set of sampling holes 3 corresponds to the upper, middle, and lower layers of the marinating liquid in the fermentation tank. The internal cavity of the sampling section 2 is divided into three independent sealed liquid storage chambers by a radially extending partition 4. Each liquid storage chamber is connected to a set of sampling holes 3 to form a fluid passage. Each liquid storage chamber is provided with a delivery tube 5 extending along the axial direction of the sampling rod. The bottom end of the delivery tube 5 extends to the bottom area of the liquid storage chamber, and the top end extends to the outside of the handheld section 1 to form a branch pipe 6 interface. Three independent branch pipes 6 are connected to the corresponding branch pipe 6 interfaces of the storage chamber. Each branch pipe 6 has a common receiving plate 7 installed at its end. The surface of the receiving plate 7 is provided with a manual water pump 8 connected to the branch pipe 6 for independent extraction of the layered liquid. The outer peripheral wall of the sampling hole 3 is integrally formed with a protrusion 9. The outer surface of the protrusion 9 is provided with an external thread. The filter sleeve 10 is screwed and fixed to the protrusion 9 through the matching thread on its inner wall. The filter sleeve 10 is provided with a filter assembly for intercepting solid suspended matter. The bottom of the filter sleeve 10 is integrally fixed with a downwardly extending impurity storage container 11. The inner cavity of the impurity storage container 11 is connected to the inner cavity of the filter sleeve 10. The bottom of the impurity storage container 11 is detachably connected with a sealing cap 12. The upper layer of the pickling liquid is sampled through a hollow sampling rod. The device enables simultaneous collection and separation of the middle and lower layers of liquid. Its core functions include precise stratified sampling, solid impurity filtration, and independent sample extraction. The sampling rod consists of a handheld section 1 (made of 304 stainless steel) and a sampling section 2 (made of corrosion-resistant polypropylene PP). The handheld section 1 provides a grip for easy one-handed operation. The sampling section 2 is an axially extended hollow structure, ensuring strength while reducing weight. Three sets of sampling holes 3 correspond to the upper (0-10cm from the liquid surface), middle (10-30cm from the liquid surface), and lower (30-50cm from the liquid surface) layers of the pickling liquid in the fermentation tank. This stratified design allows for simultaneous acquisition of liquid samples at different depths, reflecting the gradient changes in microbial metabolism and salt osmosis during fermentation. 2. The internal cavity is divided into three independent and sealed liquid storage chambers (upper chamber, middle chamber, and lower chamber) by radial partitions 4 to prevent cross-contamination of liquid samples. Each liquid storage chamber is equipped with a delivery tube 5 extending along the axis. Three sets of branch pipes 6 are connected to the corresponding branch pipe 6 interfaces to achieve independent delivery of stratified liquid samples. The surface of the protrusion 9 is provided with external threads. The filter sleeve 10 (made of transparent polycarbonate PC) is screwed and fixed to the protrusion 9 through matching threads on the inner wall to ensure sealing and facilitate disassembly and cleaning. The filter sleeve 10 is equipped with a filter component to intercept solid suspended matter such as fish debris and seasoning particles in the marinating liquid. The bottom of the filter sleeve 10 is integrally fixed with an impurity storage container 11 (made of polypropylene). The bottom of the container is equipped with a sealing cap 12, which can be removed to clean the trapped impurities.The three sets of branch pipes 6 are connected at their ends by a common receiving plate 7 (made of aluminum alloy with anodized surface). Three manual pumps 8 are installed on the surface of the receiving plate 7. These pumps generate negative pressure by pushing and pulling pistons, drawing the liquid sample from the corresponding storage chamber through the branch pipes 6 and the delivery pipes 5.
[0023] Please see Figure 1 and Figure 4 A further solution based on this embodiment is as follows: the filter assembly includes an extension block 13 integrally fixed to the upper end face of the filter sleeve 10. The extension block 13 is internally threaded with a screw 14 extending into the filter sleeve 10. One end of the screw 14 is fixedly connected to a knob 15, and the other end of the screw 14 is rotatably connected to a pressure plate 16 adapted to the inner cavity of the impurity storage container 11. By rotating the knob 15, the pressure plate 16 is driven to generate axial thrust, squeezing the impurities downward into the inner cavity of the impurity storage container 11. The extension block 13 is integrally injection molded and fixed to the upper end face of the filter sleeve 10, with an internal opening... An M12 threaded hole is provided to form a threaded drive with the screw 14. The upper end of the screw 14 (made of 304 stainless steel) is fixed to a knob 15 (with knurled surface treatment), and the lower end is rotatably connected to the pressure plate 16 through a thrust ball bearing. When the knob 15 is rotated, the screw 14 moves axially, driving the pressure plate 16 (made of polypropylene) to move axially in the cavity of the impurity storage container 11, generating thrust. When the filter screen 18 traps a lot of solid impurities (such as fish bones and spice particles) causing the filter sleeve 10 to become clogged, rotating the knob 15 causes the pressure plate 16 to press down, compressing the impurities to the bottom of the impurity storage container 11.
[0024] Please see Figure 1 and Figure 4 A further embodiment of this solution is as follows: the filter assembly also includes a filter plate 17 independently disposed within the filter sleeve 10. A filter screen 18 is installed inside the filter plate 17 and covers the corresponding sampling holes 3. An extension rod 19 is fixedly connected to the outer wall of the pressure plate 16. A scraper 20 adapted to the surface area of the filter plate 17 is fixedly connected to the end of the extension rod 19. A serrated array 21 is integrally provided on the surface of the scraper 20 facing the filter screen 18. Two extension rods 19 (made of stainless steel) are symmetrically fixed to the outer wall of the pressure plate 16, and the ends are connected to the scraper 20 (made of polytetrafluoroethylene). The scraper 20 has a serrated array 21 on its surface, which is in contact with the surface of the filter plate 17 (made of stainless steel perforated mesh). When the pressure plate 16 is pressed down, the scraper 20 moves synchronously, and the serrated array 21 scrapes away the sticky impurities (such as colloidal substances produced by fermentation) attached to the surface of the filter screen 18, thus extending the service life of the filter screen 18.
[0025] Please see Figure 1 and Figure 4 A further solution based on this embodiment is: a conical block 22 is integrally fixed to the water inlet end of the filter sleeve 10, and a water inlet hole 23 is opened on the surface of the conical block 22. The conical design causes the pickling liquid to flow radially, avoiding direct flow to the filter screen 18.
[0026] Please see Figure 1 A further solution based on this embodiment is as follows: the outer wall of the handheld section 1 is provided with anti-slip textures at equal intervals along its circumference, and a hanging ring 24 is integrally fixed to the top of the handheld section 1. The outer wall of the handheld section 1 is provided with diamond-shaped anti-slip textures at equal intervals along its circumference to increase the coefficient of friction and prevent slippage during operation. The top integrally formed hanging ring 24 (made of stainless steel) is convenient for hanging and storage and saves space.
[0027] Please see Figure 1 and Figure 5 A further solution based on this embodiment is as follows: a protruding ring 25 is fixedly connected to the surface of the sealing cap 12 facing the impurity storage container 11, and a cavity 26 adapted to the protruding ring 25 is opened on the surface of the impurity storage container 11. The protruding ring 25 is inserted into the cavity 26, and a mechanical seal is formed when the protruding ring 25 is inserted into the cavity 26 to prevent liquid leakage. The gap between the mating surfaces is controlled at 0.1-0.3mm to prevent the fermentation liquid from corroding the connection part of the sealing cap 12.
[0028] Please see Figure 1 and Figure 5 A further solution based on this embodiment is as follows: a permanent magnet is provided on the contact surface between the convex ring 25 and the concave cavity 26, the convex ring 25 and the concave cavity 26 are magnetically connected, and four sets of neodymium iron boron permanent magnets (model N35) are embedded in the contact surface between the convex ring 25 and the concave cavity 26. The opposite magnetic poles are arranged opposite to each other to generate an attraction force. The magnetic connection adds a second line of defense to the mechanical seal, so that even if the convex ring 25 is slightly displaced due to vibration, the seal can still be maintained.
[0029] Working principle: The operator first holds the hand-held section 1 with one hand and uses the stainless steel hanging ring 24 at the top to remove the device from the storage area. The sampling section 2 is then vertically inserted into the fermentation tank, ensuring that the upper, middle and lower sampling holes 3 are aligned with the upper layer (0-10cm from the liquid surface), middle layer (10-30cm from the liquid surface), and lower layer (30-50cm from the liquid surface) of the marinating liquid, respectively. At this time, the filter sleeve 10 is screwed and fixed to the protrusion 9 on the outer periphery of the sampling hole 3 through the inner wall thread. The stainless steel perforated mesh filter plate 17 and filter screen 18 inside pre-filter the flowing marinating liquid. The conical block 22 causes the liquid to flow radially to avoid directly hitting the filter screen 18. Fish debris, seasoning particles and other solid suspended matter are intercepted on the filter screen 18.
[0030] When the filter screen 18 traps a large number of impurities, causing the flow rate to slow down, the operator rotates the screw 14 inside the upper extension block 13 of the filter sleeve 10. The screw 14 is driven to rotate through the knob 15. The thrust ball bearing transmits the axial thrust to the polypropylene pressure plate 16. The pressure plate 16 presses down along the inner cavity of the impurity storage container 11, compressing impurities such as fish bones and spice particles into the impurity storage container 11. At the same time, the two stainless steel extension rods 19 on the outer wall of the pressure plate 16 drive the polytetrafluoroethylene scraper 20 to move synchronously. The serrated array 21 on the surface of the scraper 20 scrapes off the fermented colloidal substances attached to the surface of the filter screen 18. The impurity storage container 11 achieves mechanical sealing through the cooperation of the convex ring 25 and the concave cavity 26. Four sets of N35 neodymium iron boron permanent magnets further enhance the magnetic connection and prevent leakage caused by vibration.
[0031] After filtration is completed, the operator uses three manual pumps 8 on the aluminum alloy receiving plate 7 to perform layered sampling. Pushing and pulling the piston generates negative pressure, causing the liquid sample in the corresponding storage chamber to be extracted through the axially extended infusion pipe 5, the branch pipe 6 interface and the independent branch pipe 6. Since the sampling section 2 is divided into three independent sealed spaces—upper chamber, middle chamber and lower chamber—by the radial partition 4, the liquid samples in each layer are completely isolated during transportation, avoiding cross-contamination.
[0032] 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 rapid sampling device for marinating liquid of stinky mandarin fish, characterized in that: The sampling rod includes an axially extending hollow sampling rod, which consists of a handheld section (1) at the operating end and a sampling section (2) at the insertion end. The outer peripheral wall of the sampling section (2) is provided with three sets of sampling holes (3) at equal intervals along its axial direction. Each set of sampling holes (3) corresponds to the upper, middle and lower layers of the pickling liquid in the fermentation tank. The internal cavity of the sampling section (2) is divided into three independent sealed liquid storage chambers by a radially extending partition (4). Each liquid storage chamber is connected to a set of sampling holes (3) to form a fluid passage. Each liquid storage chamber is provided with a delivery tube (5) extending along the axis of the sampling rod. The bottom end of the delivery tube (5) extends to the bottom area of the liquid storage chamber, and the top end extends to the outside of the handheld section (1) to form a branch pipe (6) interface. The three sets of independent branch pipes (6) are respectively The branch pipe (6) is connected to the corresponding liquid storage chamber. Each branch pipe (6) has a common receiving plate (7) installed at its end. The surface of the receiving plate (7) is provided with a manual water pump (8) connected to the branch pipe (6) for independent extraction of the stratified liquid. The outer peripheral wall of the sampling hole (3) is integrally formed with a protrusion (9). The outer surface of the protrusion (9) is provided with an external thread. The filter sleeve (10) is screwed and fixed to the protrusion (9) through the matching thread on its inner wall. The filter sleeve (10) is provided with a filter assembly for intercepting solid suspended matter. The bottom of the filter sleeve (10) is integrally fixed with a downwardly extending impurity storage container (11). The inner cavity of the impurity storage container (11) is connected to the inner cavity of the filter sleeve (10). The bottom of the impurity storage container (11) is detachably connected with a sealing cap (12).
2. The rapid sampling device for marinating liquid of stinky mandarin fish according to claim 1, characterized in that: The filter assembly includes an extension block (13) integrally fixed to the upper end face of the filter sleeve (10). The extension block (13) is internally threaded with a screw (14) extending into the filter sleeve (10). One end of the screw (14) is fixed with a knob (15), and the other end of the screw (14) is rotatably connected to a pressure plate (16) adapted to the inner cavity of the impurity storage container (11). By rotating the knob (15), the pressure plate (16) is driven to generate an axial thrust, which squeezes the impurities downward into the inner cavity of the impurity storage container (11).
3. The rapid sampling device for marinating liquid of stinky mandarin fish according to claim 2, characterized in that: The filter assembly also includes a filter plate (17) independently disposed in the filter sleeve (10), a filter screen (18) installed in the filter plate (17) and covering the corresponding sampling hole (3), an extension rod (19) fixed to the outer wall of the pressure plate (16), a scraper (20) adapted to the surface area of the filter plate (17) fixed to the end of the extension rod (19), and a serrated array (21) integrally disposed on the surface of the scraper (20) facing the filter screen (18).
4. The rapid sampling device for marinating liquid of stinky mandarin fish according to claim 3, characterized in that: The filter sleeve (10) has a conical block (22) integrally fixed to the water inlet end, and the surface of the conical block (22) has a water inlet hole (23).
5. The rapid sampling device for marinating liquid of stinky mandarin fish according to claim 4, characterized in that: The outer wall of the hand-held section (1) is provided with anti-slip textures at equal intervals along its circumference, and the top of the hand-held section (1) is integrally fixed with a hanging ring (24).
6. The rapid sampling device for marinating liquid of stinky mandarin fish according to claim 5, characterized in that: A convex ring (25) is fixed to the surface of the sealing cap (12) facing the impurity storage container (11), and a cavity (26) adapted to the convex ring (25) is opened on the surface of the impurity storage container (11), and the convex ring (25) and the cavity (26) are inserted into each other.
7. The rapid sampling device for marinating liquid of stinky mandarin fish according to claim 6, characterized in that: A permanent magnet is provided on the contact surface between the convex ring (25) and the concave cavity (26), and the convex ring (25) and the concave cavity (26) are magnetically connected.