A rumen in vivo recorder probe device

Abstract

The present application belongs to the technical field of animal physiology research equipment, and discloses a rumen in ruminant recording instrument probe device, which comprises a storage cover, an outer rubber sleeve and an inner rubber sleeve. A storage cavity is formed in the inner wall of the storage cover. The outer rubber sleeve is fixedly connected to the opening end of the storage cover. The inner rubber sleeve is fixedly connected to the opening end of the storage cover. The inner rubber sleeve is sleeved in the outer rubber sleeve. A containing cavity is formed between the outer rubber sleeve and the inner rubber sleeve. An air cavity is formed in the inner rubber sleeve. In the present application, the air cavity is inflated to make the outer rubber sleeve and the inner rubber sleeve expand, so that the first magnetic beads are expanded in a spherical shape and distributed in the containing cavity. The spherical distribution of the first magnetic beads forms a large range of magnetic attraction area. Compared with the traditional small-area cylindrical strong magnet, the first magnetic beads can produce attractive force on the second magnetic beads on the recording instrument from multiple directions in the complex rumen environment, thereby improving the probability of rapid and accurate alignment and attraction of the two.

Description

Technical Field

[0001] This invention relates to the field of animal physiological research instruments, and more specifically, to a rumen recording and detection device for ruminants. Background Technology

[0002] Real-time monitoring devices for rumen pH and temperature, inserted orally into the rumen of ruminants, are widely used for real-time monitoring of rumen pH and temperature, particularly for phased monitoring of rumen state changes during experiments. In existing technologies, the efficiency of the magnetic attraction between the retrieval rope kit and the iron structure of the detection device is a key factor affecting the ease of retrieval operation.

[0003] In existing technologies, such as document CN117883043B, a probe device for a rumen recorder in ruminants is disclosed. In this document, the magnetic attraction structure of the probe rope set is typically a small-area cylindrical strong magnet, while the iron structure connecting the rumen recorder in the detection device is a conical, rubber-coated iron block. When the magnetic attraction structure is inserted into the rumen of a ruminant, due to the complex rumen environment, including peristalsis and chyme flow, the small magnetic attraction structure struggles to quickly and accurately align and engage with the conical iron structure. Operators often need to use an external electromagnet for multiple adjustments to achieve effective engagement, which not only prolongs the probe operation time and increases the animal's stress and discomfort but also reduces the success rate of the probe. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a rumen recording and detection device for ruminants. By inflating the air chamber, the outer and inner rubber sleeves expand, causing the first magnetic bead to unfold into a spherical shape, thus expanding the magnetic attraction range and attracting the second magnetic bead from multiple directions. This solves the problem that traditional small-area magnetic structures are difficult to align quickly and accurately.

[0005] To solve the above-mentioned technical problems, the present invention provides a rumen recording device for ruminants, including a housing cover, an outer rubber sleeve and an inner rubber sleeve. The inner wall of the housing cover has a housing cavity. The outer rubber sleeve is fixedly connected to the opening end of the housing cover, and the inner rubber sleeve is fixedly connected to the opening end of the housing cover. The inner rubber sleeve is fitted inside the outer rubber sleeve.

[0006] A receiving cavity is formed between the outer rubber sleeve and the inner rubber sleeve. An air cavity is formed inside the inner rubber sleeve. The receiving cavity is filled with lubricating fluid. Multiple first magnetic beads are spherically distributed in the receiving cavity. The first magnetic beads are fixedly connected to the outer rubber sleeve and the inner rubber sleeve respectively. After air is injected into the air cavity, the outer rubber sleeve and the inner rubber sleeve expand, causing the first magnetic beads to expand spherically and be distributed in the receiving cavity.

[0007] Preferably, an outer tube is fixedly connected to the end of the storage cover, and a spring tube is fixedly connected to the end of the outer tube.

[0008] Preferably, a connecting ring is fixedly connected to the inner wall of the outer tube, and an air tube is fixedly connected to the inner wall of the connecting ring.

[0009] Preferably, an air cylinder is fixedly connected to the end of the air pipe, a sealing piston is slidably connected to the inner wall of the air cylinder, the spring tube is fixedly connected to the air cylinder, when the sealing piston moves away from the air pipe, the gas in the air chamber is discharged through the air pipe and stored in the air cylinder, when the sealing piston moves closer to the air pipe, the gas inside the air cylinder enters the air chamber through the air pipe to complete the inflation.

[0010] Preferably, a plurality of rubber sheets are fixedly connected between the outer rubber sleeve and the inner rubber sleeve, and the plurality of rubber sheets are spherically distributed in the receiving cavity.

[0011] Preferably, the probe further includes a pull rope located inside the trachea. One end of the pull rope is fixedly connected to the sealing piston. When the inner rubber sleeve expands, the pull rope is in a taut state, and its other end passes through the center of the inner rubber sleeve and is fixedly connected to its inner wall.

[0012] Preferably, the detection device further includes a second magnetic bead, the outer wall of which is fixedly connected to a nylon rope, and a recorder is fixedly connected to the end of the nylon rope.

[0013] Preferably, the inner rubber sleeve is provided with two sets of traction components, the traction components including a first set of connecting ropes and a second set of connecting ropes;

[0014] One end of each of the multiple connecting ropes in the first group is fixedly connected to the end of the pull rope, and the other end is fixedly connected to the first annular line on the inner wall of the inner rubber sleeve.

[0015] The second set of connecting ropes has multiple connecting ropes with one end fixedly connected to the pull rope, and the other end respectively connected to the second annular line on the inner wall of the inner rubber sleeve;

[0016] The traction component is configured to: during the exhaust process of the air chamber, guide the outer rubber sleeve and the inner rubber sleeve to collapse towards the pull rope connection point and wrap around the second magnetic bead adsorbed on the outer rubber sleeve, while the pull rope and the traction component drive the collapsed part to retract into the receiving cavity.

[0017] Preferably, the first annular line and the second annular line are located at different positions on the inner rubber sleeve spherical surface, and the diameter of the second annular line is smaller than the diameter of the first annular line.

[0018] Preferably, the probe further includes a rubber nozzle, an open tube is fixedly connected to the inner wall of the rubber nozzle, rubber strips are fixedly connected to both ends of the rubber nozzle, and a pressure plate is fixedly connected between the two rubber strips.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] By inflating the air chamber, the outer and inner rubber sleeves expand, causing the first magnetic bead to unfold spherically and distribute within the cavity. This spherically distributed first magnetic bead forms a large magnetic attraction area. Compared to traditional cylindrical strong magnets with smaller areas, it can attract the second magnetic bead on the recorder from multiple directions in the complex rumen environment, increasing the probability of the two being quickly and accurately aligned and attracted. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the installation structure of the outer rubber sleeve of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the storage cover of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the first magnetic bead of the present invention;

[0026] Figure 5 This is a schematic diagram of the internal installation structure of the inner rubber sleeve of the present invention;

[0027] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0028] Figure 7 This is a schematic diagram of the structure of the rubber sheet of the present invention;

[0029] Figure 8 This is a schematic diagram of the installation structure of the open tube of the present invention;

[0030] Figure 9 This is a schematic diagram of the internal structure of the air cylinder of the present invention;

[0031] Figure 10 A schematic diagram of the structure of the second magnetic bead mounting part of the present invention.

[0032] The labels in the diagram are as follows: 1. Storage cover; 2. Storage cavity; 3. Outer rubber sleeve; 4. Inner rubber sleeve; 5. Receiving cavity; 6. Air cavity; 7. Lubricating fluid; 8. First magnetic bead; 9. First set of connecting ropes; 91. Second set of connecting ropes; 10. Rubber sheet; 11. Pull rope; 12. Outer connecting pipe; 13. Air tube; 14. Connecting ring; 15. Spring tube; 16. Opening tube; 17. Rubber nozzle; 18. Rubber belt; 19. Pressure plate; 20. Air cylinder; 21. Sealing piston; 22. Recorder; 23. Nylon rope; 24. Second magnetic bead. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1-4 As shown, a rumen recording and detection device for ruminants includes a storage cover 1, an outer rubber sleeve 3 and an inner rubber sleeve 4. The inner wall of the storage cover 1 has a storage cavity 2. The outer rubber sleeve 3 is fixedly connected to the opening end of the storage cover 1, and the inner rubber sleeve 4 is fixedly connected to the opening end of the storage cover 1. The inner rubber sleeve 4 is fitted inside the outer rubber sleeve 3.

[0035] A receiving cavity 5 is formed between the outer rubber sleeve 3 and the inner rubber sleeve 4. An air cavity 6 is formed inside the inner rubber sleeve 4. The receiving cavity 5 is filled with lubricating fluid 7. Multiple first magnetic beads 8 are spherically distributed in the receiving cavity 5. The first magnetic beads 8 are fixedly connected to the outer rubber sleeve 3 and the inner rubber sleeve 4 respectively. After air is injected into the air cavity 6, the outer rubber sleeve 3 and the inner rubber sleeve 4 expand, causing the first magnetic beads 8 to unfold spherically and be distributed in the receiving cavity 5.

[0036] By inflating the air chamber 6, the outer rubber sleeve 3 and the inner rubber sleeve 4 expand, causing the first magnetic bead 8 to unfold into a spherical shape, thus expanding the magnetic attraction range and attracting the second magnetic bead 24 from multiple directions. This solves the problem that traditional small-area magnetic attraction structures are difficult to align quickly and accurately.

[0037] The first magnetic beads 8 are spherically distributed. When the gas is inflated, the magnetic coverage area expands, but the magnetic force at a single point disperses. When the gas is deflated and the gas is contracted, the magnetic beads gather and the magnetic force at a single point is enhanced. The magnetic attraction intensity can be dynamically adjusted according to the position of the recorder in the rumen. When the distance is far, the range is expanded for rapid positioning, and when the distance is close, the attraction is enhanced to ensure attraction.

[0038] As the volume of the air chamber 6 gradually decreases, the first magnetic beads 8 gradually gather, enhancing the magnetic force and preventing the second magnetic beads 24 from falling off when the outer rubber sleeve 3 collapses.

[0039] like Figure 1 As shown, an outer tube 12 is fixedly connected to one end of the storage cover 1, and a spring tube 15 is fixedly connected to one end of the outer tube 12.

[0040] The outer tube 12 connects the storage cover 1 and the spring tube 15. The spring tube 15 has a certain degree of flexibility, which makes it easy to insert the device into the rumen and adapt to the curvature of the esophagus. At the same time, it is easy for the operator to hold and control the pushing and taking out of the device, thus improving the convenience of operation.

[0041] like Figure 6 As shown, a connecting ring 14 is fixedly connected to the inner wall of the outer tube 12, and an air tube 13 is fixedly connected to the inner wall of the connecting ring 14.

[0042] The connecting ring 14 fixes the air pipe 13 to the inner wall of the outer connecting pipe 12, ensuring the stable installation of the air pipe 13, preventing the air pipe 13 from shaking or falling off during the movement of the device, and ensuring the smooth operation of the inflation and deflation process of the air chamber 6.

[0043] like Figure 8 and Figure 9 As shown, an air cylinder 20 is fixedly connected to the end of the air pipe 13. A sealing piston 21 is slidably connected to the inner wall of the air cylinder 20. A spring tube 15 is fixedly connected to the air cylinder 20. When the sealing piston 21 moves away from the air pipe 13, the gas in the air chamber 6 is discharged through the air pipe 13 and enters the air cylinder 20 for storage. When the sealing piston 21 moves closer to the air pipe 13, the gas inside the air cylinder 20 enters the air chamber 6 through the air pipe 13, thus completing the inflation.

[0044] An external air pump, an air cylinder 20, and a sealed piston 21 work together to inflate and evacuate the air chamber 6, controlling the expansion and contraction of the outer rubber sleeve 3 and the inner rubber sleeve 4.

[0045] like Figure 5 and Figure 7 As shown, multiple rubber sheets 10 are fixedly connected between the outer rubber sleeve 3 and the inner rubber sleeve 4, and the multiple rubber sheets 10 are spherically distributed in the receiving cavity 5.

[0046] Multiple rubber sheets 10 arranged in a spherical shape within the receiving cavity 5 can enhance the structural stability of the outer rubber sleeve 3 and the inner rubber sleeve 4, preventing them from deforming excessively during expansion or contraction. At the same time, they play an auxiliary role in fixing the first magnetic bead 8, ensuring the stability of its spherical distribution.

[0047] like Figure 9As shown, the probe also includes a pull rope 11, which is located inside the trachea 13. One end of the pull rope 11 is fixedly connected to the sealing piston 21. When the inner rubber sleeve 4 expands, the pull rope 11 is in a taut state, and its other end passes through the center of the inner rubber sleeve 4 and is fixedly connected to its inner wall.

[0048] When the air chamber 6 expands, the pull rope 11 is taut, which can provide tension to the inner rubber sleeve 4 and prevent it from expanding excessively. When the air is pumped out and contracted, the pull rope 11 can drive the inner rubber sleeve 4 to contract towards the storage chamber 2, which helps to pull the attracted recorder 22 into the storage cover 1 and improve the recovery efficiency. In addition, it can realize the gradual collapse of the outer rubber sleeve 3 and the inner rubber sleeve 4, thereby wrapping the second magnetic bead 24.

[0049] like Figure 10 As shown, the detection device also includes a second magnetic bead 24, and a nylon rope 23 is fixedly connected to the outer wall of the second magnetic bead 24. A recorder 22 is fixedly connected to the end of the nylon rope 23.

[0050] The second magnetic bead 24 is connected to the recorder 22 via a nylon rope 23. The second magnetic bead 24 can precisely attract the first magnetic bead 8. The nylon rope 23 is flexible and does not affect the normal operation of the recorder 22 in the rumen, while also being easy to be retrieved by the device.

[0051] like Figure 5 As shown, the inner rubber sleeve 4 is provided with two sets of traction components, which include a first set of connecting ropes 9 and a second set of connecting ropes 91.

[0052] One end of each of the multiple connecting ropes in the first group of connecting ropes 9 is fixedly connected to the end of the pull rope 11, and the other end is fixedly connected to the first annular line on the inner wall of the inner rubber sleeve 4.

[0053] In the second set of connecting ropes 91, one end of each of the multiple connecting ropes is fixedly connected to the pull rope 11, and the other end is respectively connected to the second annular line on the inner wall of the inner rubber sleeve 4.

[0054] The traction component is configured such that during the exhaust process of the air chamber 6, the outer rubber sleeve 3 and the inner rubber sleeve 4 are guided to collapse towards the connection point of the pull rope 11 and wrap around the second magnetic bead 24 adsorbed on the outer rubber sleeve 3. At the same time, the pull rope 11 and the traction component drive the collapsed part to retract into the receiving cavity 2.

[0055] The traction component, consisting of the first set of connecting ropes 9 and the second set of connecting ropes 91, can guide the outer rubber sleeve 3 and the inner rubber sleeve 4 to collapse in an orderly manner when the air chamber 6 is vented, ensuring that they tightly wrap the second magnetic bead 24 and reliably retract it into the storage chamber 2, thereby improving the success rate of the recorder 22's retrieval.

[0056] The first and second annular lines are located at different positions on the spherical surface of the inner rubber sleeve 4, and the diameter of the second annular line is smaller than the diameter of the first annular line.

[0057] The first ring line refers to the circular line on the inner wall of the inner rubber sleeve 4 with a diameter equal to that of the inner rubber sleeve 4. This design allows the diameter of the collapsed opening pulled by the first set of connecting ropes 9 to be close to the diameter of the inner rubber sleeve 4, thereby fully wrapping the second magnetic bead 24 and preventing the recorder 22 from falling off when it is taken out.

[0058] like Figure 8 As shown, the probe also includes a rubber nozzle 17, with an open tube 16 fixedly connected to the inner wall of the rubber nozzle 17, and rubber strips 18 fixedly connected to both ends of the rubber nozzle 17, with a pressure plate 19 fixedly connected between the two rubber strips 18.

[0059] The rubber mouthpiece 17 can be fixed to the mouth of a ruminant, the opening tube 16 provides a passage for the device to enter and exit, and the rubber band 18 and the pressure plate 19 can firmly fix the rubber mouthpiece 17 to prevent the device from shifting due to the animal chewing or swallowing during the exploration process, thus ensuring smooth operation.

[0060] Working principle: Before using the rumen recorder for ruminants, iron objects in the rumen must be removed using a rumen nail remover and then checked with an ultrasound machine to ensure that there are no iron objects in the rumen, so as to avoid interference with the use of the subsequent exploration device.

[0061] When it is necessary to remove the recorder 22, the corresponding animal should be fasted for more than 12 hours but not watered. After that, when the retrieval operation is performed, the animal is fixed in the restraint bar with its head fixed, and the opening tube 16 is placed into the animal's mouth. The opening tube 16 is fixed in the animal's mouth by the rubber band 18 and the pressure plate 19.

[0062] Under negative pressure, the outer rubber sleeve 3 and the inner rubber sleeve 4 collapse and shrink into the storage cover 1. The storage cover 1 is inserted into the esophagus of the animal to be taken through the opening tube 16. Through the extension of the spring tube 15, the storage cover 1 is extended into the rumen.

[0063] Air is pumped into the air cylinder 20 by an air pump, causing the sealing piston 21 to move along the air cylinder 20 towards the end near the air pipe 13. At this time, the gas in the air cylinder 20 enters the storage cover 1 through the air pipe 13, thereby pushing the contracted outer rubber sleeve 3 and inner rubber sleeve 4 out of the storage cover 1 and causing the outer rubber sleeve 3 and inner rubber sleeve 4 to expand. The first magnetic bead 8 between the expanded outer rubber sleeve 3 and inner rubber sleeve 4 is evenly spread out in the receiving cavity 5, increasing the magnetic attraction area. By pulling the rope 11, the first set of connecting ropes 9 and the second set of connecting ropes 91, the outer rubber sleeve 3 and inner rubber sleeve 4 can be evenly spread out.

[0064] Using an ultrasound scanner, the position of the recorder placed inside the rumen of a ruminant is detected. The first magnetic bead 8, after unfolding, attracts the second magnetic bead 24 at the end of the recorder 22. After confirming their mutual attraction using the ultrasound scanner, the air pump exhausts air, causing the sealed piston 21 to move along the air cylinder 20 away from the trachea 13. The air chamber 6 contracts, and the outer rubber sleeve 3 and inner rubber sleeve 4, under the action of the traction component, first collapse towards the connection point of the pull rope 11, and then gradually collapse towards the connection point of the first set of connecting ropes 9 and the second set of connecting ropes 91. As the outer rubber sleeve 3 and inner rubber sleeve 4 gradually envelop and attract the second magnetic bead 24, the gas in the air chamber 6 gradually decreases during the collapse of the outer rubber sleeve 3 and inner rubber sleeve 4. However, the surface of the outer rubber sleeve 3 and inner rubber sleeve 4 still maintains tension. At the same time, under negative pressure, the outer rubber sleeve 3 and inner rubber sleeve 4 gradually collapse. The sealing piston 21 drives the collapsed part to contract towards the receiving cavity 2 through the pull rope 11 and traction component. Finally, the device, together with the recorder 22, is pulled out of the animal's rumen through the spring tube 15 and the outer tube 12, completing the removal of the corresponding rumen internal environment data recorder.

[0065] It should be noted that 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.

[0066] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rumen recording and detection device for ruminants, characterized in that, include: Storage cover (1), with a storage cavity (2) on the inner wall; The outer rubber sleeve (3) is fixedly connected to the opening end of the storage cover (1); The inner rubber sleeve (4) is fixedly connected to the opening end of the storage cover (1), and the inner rubber sleeve (4) is fitted inside the outer rubber sleeve (3); A receiving cavity (5) is formed between the outer rubber sleeve (3) and the inner rubber sleeve (4). An air cavity (6) is formed inside the inner rubber sleeve (4). The receiving cavity (5) is filled with lubricating fluid (7). A plurality of first magnetic beads (8) are spherically distributed in the receiving cavity (5). The first magnetic beads (8) are fixedly connected to the outer rubber sleeve (3) and the inner rubber sleeve (4) respectively. After air is injected into the air cavity (6), the outer rubber sleeve (3) and the inner rubber sleeve (4) expand, causing the first magnetic beads (8) to expand spherically and be distributed in the receiving cavity (5). The inner rubber sleeve (4) is provided with two sets of traction components, the traction components including a first set of connecting ropes (9) and a second set of connecting ropes (91). It also includes a pull rope (11), where one end of multiple connecting ropes in the first group of connecting ropes (9) is fixedly connected to the end of the pull rope (11), and the other end is fixedly connected to the first annular line on the inner wall of the inner rubber sleeve (4); One end of each of the multiple connecting ropes in the second group of connecting ropes (91) is fixedly connected to the pull rope (11), and the other end is respectively connected to the second annular line on the inner wall of the inner rubber sleeve (4); The traction component is configured to: during the exhaust process of the air chamber (6), guide the outer rubber sleeve (3) and the inner rubber sleeve (4) to collapse towards the connection point of the pull rope (11) and wrap the second magnetic bead (24) adsorbed on the outer rubber sleeve (3), while the pull rope (11) and the traction component drive the collapsed part to retract towards the storage cavity (2). The first and second annular lines are located at different positions on the spherical surface of the inner rubber sleeve (4), and the diameter of the second annular line is smaller than the diameter of the first annular line.

2. The rumen recording and detection device for ruminants according to claim 1, characterized in that: The storage cover (1) is fixedly connected to an outer tube (12) at one end, and a spring tube (15) is fixedly connected to the other end of the outer tube (12).

3. The rumen recording and detection device for ruminants according to claim 2, characterized in that: The inner wall of the outer tube (12) is fixedly connected to a connecting ring (14), and the inner wall of the connecting ring (14) is fixedly connected to an air tube (13).

4. The rumen recording and detection device for ruminants according to claim 3, characterized in that: An air cylinder (20) is fixedly connected to the end of the air pipe (13). A sealing piston (21) is slidably connected to the inner wall of the air cylinder (20). The spring tube (15) is fixedly connected to the air cylinder (20). When the sealing piston (21) moves away from the air pipe (13), the gas in the air chamber (6) is discharged through the air pipe (13) and enters the air cylinder (20) for storage. When the sealing piston (21) moves closer to the air pipe (13), the gas inside the air cylinder (20) enters the air chamber (6) through the air pipe (13) to complete the inflation.

5. The rumen recording and detection device for ruminants according to claim 4, characterized in that: Multiple rubber sheets (10) are fixedly connected between the outer rubber sleeve (3) and the inner rubber sleeve (4), and the multiple rubber sheets (10) are spherically distributed in the receiving cavity (5).

6. The rumen recording and detection device for ruminants according to claim 4, characterized in that: The pull rope (11) is located inside the trachea (13). One end of the pull rope (11) is fixedly connected to the sealing piston (21). When the inner rubber sleeve (4) expands, the pull rope (11) is in a taut state, and its other end passes through the center of the inner rubber sleeve (4) and is fixedly connected to its inner wall.

7. The rumen recording and detection device for ruminants according to claim 1, characterized in that: It also includes a second magnetic bead (24), the outer wall of which is fixedly connected to a nylon rope (23), and the end of the nylon rope (23) is fixedly connected to a recorder (22).

8. The rumen recording and detection device for ruminants according to claim 7, characterized in that: It also includes a rubber mouthpiece (17), the inner wall of which is fixedly connected to an open tube (16), and both ends of the rubber mouthpiece (17) are fixedly connected to rubber strips (18), and a pressure plate (19) is fixedly connected between the two rubber strips (18).

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