Automatic constant pressure water supply device for laboratory animals

Abstract

This utility model relates to the field of laboratory animal husbandry technology, specifically disclosing an automatic constant-pressure water supply device for laboratory animals, comprising: a water storage cylinder, which serves as the main storage container for drinking water for laboratory animals; a sealing cone seat fitted and sealed at the bottom of the water storage cylinder, and the bottom of the sealing cone seat being sealed to the drinking water outlet pipe via a connecting joint; and a rotatable licking ball being embedded in the end port of the drinking water outlet pipe. These structures together constitute the main structure of the water supply device. In this automatic constant-pressure water supply device for laboratory animals, the sealing cone seat and the water storage cylinder are sealed together, and the water guide tube is vertically fixed axially within the water outlet pipe of the sealing cone seat, precisely limiting the axial sway of the water guide tube. An exhaust pipe filter cylinder fitted onto the upper surface of the exhaust pipe on the top cover of the cylinder contains medical-grade meltblown fabric microbial filter cotton, which filters the air entering the water storage cylinder, blocking the contamination pathways of external microorganisms, feed dust, and bedding fibers.

Description

Technical Field

[0001] This utility model relates to the field of laboratory animal husbandry technology, specifically to an automatic constant pressure water supply device for laboratory animals. Background Technology

[0002] Bottle-type automatic drinking devices are commonly used water supply equipment for small and medium-sized laboratory animals in single-cage or isolated rearing. Their known structure mainly consists of a transparent polyethylene water bottle, a silicone sealing plug, and a metal drinking straw. During operation, the water bottle is inverted, and the silicone sealing plug is fixed in a pre-drilled hole in the cage top cover. One end of the metal straw passes through the sealing plug and extends into the bottom of the bottle, while the other end extends into the cage. Gravity causes the water in the bottle to flow slowly out along the straw. The animal obtains water by licking the end of the straw. The known advantages of this device are that it allows for direct observation of water intake, avoids cross-contamination between multiple animals, and its simple structure makes it easy to assemble and disassemble, facilitating regular cleaning and disinfection, and meeting the basic hygiene requirements for laboratory animal husbandry.

[0003] In actual use, the metal straw and silicone sealing plug of this device are connected by only a single interference fit. When medium-sized animals such as rats bite the end of the straw, it will cause the straw to shake axially. Long-term shaking will cause continuous friction between the contact surface of the sealing plug and the straw, which will easily lead to wear gaps. This will allow feed dust and bedding fibers from the laboratory environment to enter the bottle through the gaps, resulting in an increase in bacteria in the drinking water and causing drinking water contamination. Moreover, when experimental animals directly bite the metal straw, it will not only accelerate the relative displacement between the straw and the sealing plug, but also cause the sealing plug to tear and break along the straw axis under the pulling effect of the straw shaking. Therefore, the sealing plug needs to be replaced frequently, and failure to replace it in time will easily lead to drinking water leakage. Utility Model Content

[0004] The purpose of this invention is to provide an automatic constant-pressure water supply device for laboratory animals, which solves the problem in the prior art where the metal straw and silicone sealing plug are connected by a single interference fit. When medium-sized animals such as rats bite the end of the straw, the straw will wobble axially. Long-term wobble causes continuous friction between the contact surface of the sealing plug and the straw, which can easily lead to wear gaps, resulting in an increase in bacteria in the drinking water and causing water contamination. Furthermore, when laboratory animals directly bite the metal straw, it not only accelerates the relative displacement between the straw and the sealing plug, but also causes the sealing plug to tear and break along the straw axis under the pulling effect of the straw wobble. This requires frequent replacement of the sealing plug, and failure to replace it in time can easily lead to water leakage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic constant pressure water supply device for laboratory animals, including a water storage cylinder, which is the main storage container for drinking water for laboratory animals. A sealing cone seat is installed at the bottom of the water storage cylinder, and the bottom of the sealing cone seat is sealed to the drinking water outlet pipe through a connecting joint. A licking ball is rotatably embedded in the end port of the drinking water outlet pipe. The above structures together constitute the main structure of the drinking device. The top opening of the water storage cylinder is covered with a cylinder top cover, and the cylinder top cover is penetrated by the water inlet pipe of the water supply pipe control valve, and the water inlet pipe of the water supply pipe control valve extends into the interior of the water storage cylinder. An exhaust pipe is installed through the cylinder top cover, and one end of the exhaust pipe is connected to the interior of the water storage cylinder. The outer wall of the water storage cylinder is fitted with an installation clip, and a rectangular plane is provided on the side end of the installation clip. A screw is vertically arranged at the center of the rectangular plane. The screw of the installation clip passes through the clamping frame, and the outer wall of the clamping frame is rotatably connected to the clamping adjustment nut through a bearing. The clamping adjustment nut is threadedly connected to the screw of the installation clip through the inner wall thread. The bottom end of the sealing cone is wrapped by the supporting connecting cylinder, and the bottom end of the supporting connecting cylinder is engaged with one end of the water receiving base. The water receiving base is set in a vertical position inside the experimental animal cage. The water receiving base has a U-shaped extension structure facing the licking ball, and the groove in the extension structure of the water receiving base is a water receiving trough.

[0006] By adopting the above technical solution, the risk of leakage from the drinking water outlet pipe and sealing components is reduced through the sealed installation of the sealing cone seat and the water storage cylinder, and the sealed connection of the connecting joint.

[0007] Preferably, the side wall of the water storage cylinder is provided with transparent capacity scale lines, and a gasket is provided at the connection between the water storage cylinder and the top cover.

[0008] Using the above technical solution, the transparent capacity scale line on the side wall of the water tank allows for intuitive observation of the remaining drinking water volume. The timing of water replenishment can be determined without disassembling the device, thus improving ease of use.

[0009] Preferably, a water guide core tube is vertically arranged along the axial direction at the water outlet pipe of the sealing cone seat, and the water guide core tube extends into the water storage tank, and strip-shaped water inlet holes are equidistantly opened on the surface of the water guide core tube.

[0010] By adopting the above technical solution, the strip-shaped water inlet holes on the surface of the water guide core tube ensure a stable flow of water into the drinking water outlet pipe, prevent water supply interruption caused by blockage of a single water inlet, and improve the reliability of water supply.

[0011] Preferably, a mouthpiece protective sleeve is fitted on the outer wall of the section of the drinking water outlet pipe near the licking ball, and the mouthpiece protective sleeve is made of polytetrafluoroethylene.

[0012] Using the above technical solution, the PTFE mouthpiece can prevent laboratory animals from directly biting the drinking water outlet pipe, avoiding pipe damage. At the same time, it provides radial support to the outlet pipe, alleviating the dragging force caused by animal biting or accidental contact, preventing the sealing cone from tearing due to dragging, and extending the life of the sealing components.

[0013] Preferably, the cross-section of the support connecting cylinder is C-shaped, and the support connecting cylinder is penetrated by the drinking water outlet pipe. The upper end of the support connecting cylinder is provided with a groove that matches the sealing cone seat, and the bottom end of the support connecting cylinder is engaged with the inside of the water receiving base.

[0014] Using the above technical solution, the C-shaped structure of the supporting connecting cylinder facilitates the through installation of the drinking water outlet pipe, and the groove at the upper end that adapts to the sealing cone seat enhances the connection stability between the two and reduces the loosening of the connection between the sealing cone seat and the outlet pipe.

[0015] Preferably, a rubber pad is fixedly installed on the inner wall of the clamping frame and the mounting clip, and the surface of the rubber pad is provided with a wavy anti-slip texture.

[0016] Using the above technical solution, the rubber pads on the inner walls of the holder and the mounting clip, combined with the wavy anti-slip texture on the surface, can increase the friction with the side wall of the cage, preventing the device from sliding and shifting due to animal impact or vibration. At the same time, the rubber pads can buffer the clamping pressure, preventing the side wall of the cage from being pinched and injured, thus taking into account both the stability of the fixation and the protection of the cage.

[0017] Preferably, the upper end face of the exhaust pipe of the cylinder top cover is fitted with an exhaust pipe filter cylinder, and the microbial filter cotton inside the exhaust pipe filter cylinder is medical-grade meltblown cloth.

[0018] Using the above technical solution, the medical-grade meltblown fabric microbial filter cotton inside the exhaust pipe filter can filter microorganisms, feed dust and bedding fibers in the air entering the water storage tank, blocking the path of external pollutants into the drinking water and ensuring that the drinking water in the water storage tank remains clean for a long time.

[0019] Compared with the prior art, the beneficial effects of this utility model are: This automatic constant pressure water supply device for laboratory animals: 1. The sealing cone and water storage cylinder in this device are installed in a sealed manner, and the water guide core tube is fixed vertically in the water outlet pipe of the sealing cone along the axial direction, which can accurately limit the axial sway of the water guide core tube. The exhaust pipe filter cylinder fitted on the upper end face of the exhaust pipe on the top cover of the cylinder has medical-grade meltblown fabric microbial filter cotton inside, which can filter the air entering the water storage cylinder and block the contamination path of external microorganisms, feed dust and bedding fiber. 2. The device has a PTFE mouthpiece protective sleeve on the outer wall of the section of the drinking water outlet pipe near the licking ball. This material is hard and chew-resistant, which can directly prevent medium-sized animals such as rats from directly biting the drinking water outlet pipe. At the same time, the mouthpiece protective sleeve fits tightly with the drinking water outlet pipe, which can form radial support for the pipe and reduce the drag force generated when the animal accidentally touches or licks it, thus preventing the drag force from being transmitted to the sealing cone seat and causing tearing. 3. By supporting the bottom of the sealing cone by wrapping and supporting the connecting cylinder, the connection stability between the sealing cone and the drinking water outlet pipe is enhanced, reducing the probability of leakage from the source. Furthermore, the water receiving base that engages at the bottom of the supporting connecting cylinder has a U-shaped extension structure that can collect small amounts of water droplets that may drip from the end of the drinking water outlet pipe in real time, preventing leaked drinking water from soaking the cage bedding and causing mold. Then, the mounting clips, clamps and rubber pads on the outer wall of the water storage cylinder form a fixing component. The wavy anti-slip texture on the surface of the rubber pad can increase the friction with the side wall of the cage, ensuring the overall stability of the device and avoiding structural displacement caused by animal impact, which would aggravate leakage. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the overall disassembled three-dimensional structure of this utility model; Figure 3 This is a schematic diagram of the overall internal side section of the present invention. Figure 4 This is a schematic diagram of the overall internal three-dimensional structure of this utility model; Figure 5 A three-dimensional structural diagram of the water storage cylinder and sealing cone seat of this utility model; Figure 6 This is a three-dimensional structural diagram of the sealing cone seat, connecting joint, and drinking water outlet pipe of this utility model.

[0021] In the diagram: 1. Water storage cylinder; 2. Sealing cone seat; 3. Water guide core tube; 4. Connecting joint; 5. Drinking water outlet pipe; 6. Licking ball; 7. Mouth protective sleeve; 8. Support connecting cylinder; 9. Water receiving base; 10. Mounting clamp; 11. Clamping frame; 12. Rubber pad; 13. Clamping adjusting nut; 14. Top cover of cylinder; 15. Water inlet pipe control valve; 16. Exhaust pipe filter cylinder. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-6 The present invention provides a technical solution: an automatic constant pressure water supply device for laboratory animals, comprising a water storage cylinder 1, a sealing cone seat 2, a water guide core tube 3, a connecting joint 4, a drinking water outlet pipe 5, a licking ball bearing 6, a mouthpiece protective sleeve 7, a support connecting cylinder 8, a water receiving base 9, a mounting clip 10, a clamping frame 11, a rubber pad 12, a clamping adjusting nut 13, a cylinder top cover 14, a water inlet pipe control valve 15, and an exhaust pipe filter cylinder 16; Among them, the water storage cylinder 1 is the main storage container for drinking water for experimental animals. The bottom end of the water storage cylinder 1 is fitted with a sealing cone seat 2, and the bottom end of the sealing cone seat 2 is sealed to the drinking water outlet pipe 5 through the connecting joint 4. The end port of the drinking water outlet pipe 5 is rotatably embedded with a licking ball 6. The above structures together constitute the main structure of the drinking device. The outer wall of the section of the drinking water outlet pipe 5 near the licking ball 6 is fitted with a mouth protective sleeve 7, and the mouth protective sleeve 7 is made of polytetrafluoroethylene. The top opening of the water storage cylinder 1 is covered with a cylinder top cover 14, and the cylinder top cover 14 is penetrated by the water inlet pipe of the water supply pipe control valve 15, and the water inlet pipe of the water supply pipe control valve 15 extends into the interior of the water storage cylinder 1. An exhaust pipe is installed through the cylinder top cover 14, and one end of the exhaust pipe is connected to the interior of the water storage cylinder 1. An exhaust pipe filter cylinder 16 is fitted on the upper end face of the exhaust pipe of the cylinder top cover 14, and the microbial filter cotton inside the exhaust pipe filter cylinder 16 is medical grade meltblown cloth. A transparent capacity scale line is provided on the side wall of the water storage cylinder 1, and a gasket is provided at the connection between the water storage cylinder 1 and the cylinder top cover 14. The outer wall of the water storage cylinder 1 is fitted with a mounting clip 10, and a rectangular plane is provided on the side end of the mounting clip 10. A screw is vertically provided at the center of the rectangular plane. The screw of the mounting clip 10 passes through the clamping frame 11, and the outer wall of the clamping frame 11 is rotatably connected to the clamping adjusting nut 13 through a bearing. The clamping adjusting nut 13 is threadedly connected to the screw of the mounting clip 10 through the inner wall thread. A rubber pad 12 is fixedly installed on the inner wall of the clamping frame 11 and the mounting clip 10, and the surface of the rubber pad 12 is provided with a wavy anti-slip texture. Referring to the attached diagrams in the instruction manual Figures 1-6As shown, the rubber pads 12 are fixed to the inner wall of the rectangular plane of the mounting clip 10 and the corresponding inner wall of the clamping frame 11, respectively. Then, the mounting clip 10 is fitted onto the outer wall of the water storage cylinder 1. Next, the clamping frame 11 is passed through its own opening through the screw at the side end of the mounting clip 10. Then, the clamping adjusting nut 13 is threaded to the screw of the mounting clip 10 through the inner wall thread. After that, the whole device is moved to the target installation position of the experimental animal cage, so that the mounting clip 10 and the clamping frame 11 are respectively attached to the two sides of the cage side wall. Finally, the clamping adjusting nut 13 is rotated to drive the clamping frame 11 to move along the screw towards the mounting clip 10 until the rubber pads 12 are tightly attached to the cage side wall, so that the device is stably fixed on the cage. Insert the support connecting cylinder 8 into the bottom end of the sealing cone seat 2 from the bottom, so that the groove at the upper end of the support connecting cylinder 8 fits and conforms to the outer wall of the sealing cone seat 2. Then, engage one end of the water receiving base 9 with the bottom end of the support connecting cylinder 8 to ensure that the water receiving base 9 is located in a vertical position inside the cage, and that the U-shaped extension structure of the water receiving base 9 faces the direction of the drinking water outlet pipe 5 to be installed later. Install the sealing cone seat 2 with the sealing structure at the bottom opening of the water storage cylinder 1. Then, connect one end of the drinking water outlet pipe 5 to the bottom of the sealing cone seat 2 through the connecting joint 4 to ensure that the end of the drinking water outlet pipe 5 extends directly above the U-shaped water receiving groove of the water receiving base 9. Next, put the nozzle protective sleeve 7 on the outer wall of the section of the drinking water outlet pipe 5 near the end. Finally, seal the top cover 14 on the upper opening of the water storage cylinder 1 and put the exhaust pipe filter cylinder 16 on the upper end of the exhaust pipe on the top cover 14 to complete the installation of the whole device. A water guide tube 3 is vertically installed along the axial direction at the water outlet pipe of the sealing cone seat 2, and the water guide tube 3 extends into the water storage cylinder 1. The surface of the water guide tube 3 is provided with strip-shaped water inlet holes at equal intervals. The bottom end of the sealing cone seat 2 is wrapped by the support connecting cylinder 8, and the bottom end of the support connecting cylinder 8 is engaged with one end of the water receiving base 9. The water receiving base 9 is set in a vertical position inside the experimental animal cage. The water receiving base 9 is provided with a U-shaped extension structure facing the licking ball 6, and the groove in the extension structure of the water receiving base 9 is a water receiving groove. The cross-section of the support connecting cylinder 8 is set with a C-shaped structure, and the support connecting cylinder 8 is penetrated by the drinking water outlet pipe 5. The upper end of the support connecting cylinder 8 is provided with a groove that matches the sealing cone seat 2, and the bottom end of the support connecting cylinder 8 is engaged with the inside of the water receiving base 9. Referring to the attached diagrams in the instruction manual Figures 1-6As shown, during use, the water supply control valve 15 is opened to connect the water supply pipe to the laboratory water supply pipe. Water is then injected into the water storage tank 1 through the water inlet pipe that extends into the tank. During the water injection process, the amount of water consumed can be visually observed through the transparent capacity scale line on the side wall of the water storage tank 1. Once the target water volume is reached, the water supply control valve 15 is closed. During the use of the device, the water volume can be checked periodically through the capacity scale line of the water storage tank 1. If the water volume is insufficient, the water supply control valve 15 can be opened to replenish the water, ensuring that the experimental animals continuously receive clean drinking water. During the process of adding water and subsequent animal drinking water, the air pressure inside the water storage cylinder 1 is balanced by connecting with the outside through the exhaust pipe on the top cover 14. The medical-grade meltblown fabric microbial filter cotton in the exhaust pipe filter cylinder 16 will filter the air entering the water storage cylinder 1, preventing external microorganisms from contaminating the drinking water. At the same time, the gasket at the connection between the water storage cylinder 1 and the top cover 14 will enhance the sealing performance at the top, preventing the drinking water from leaking from the top. Under the influence of gravity, the drinking water in the water storage tank 1 flows downward through the strip-shaped water inlet hole on the surface of the water guide core tube 3, which is vertically arranged along the axial direction at the sealing cone seat 2. Then, the water flows into the drinking water outlet pipe 5 through the sealed transmission of the connecting joint 4, and is transported to the inside of the cage along the drinking water outlet pipe 5. When laboratory animals need to drink water, they lick the licking ball 6 at the end of the drinking water outlet tube 5. The licking action causes the licking ball 6 to rotate inside the outlet tube, allowing water to flow out through the gap between the ball and the outlet tube for the animals to drink. The polytetrafluoroethylene (PTFE) mouthpiece protective sleeve 7 on the outside of the drinking water outlet tube 5 prevents animals from directly biting the outlet tube, extending the service life of the device. The mouthpiece protective sleeve 7 is made of PTFE, which effectively prevents laboratory animals from directly biting the drinking water outlet tube 5 to protect the tube. It also provides support for the drinking water outlet tube 5 during animal activities, reducing the direct drag force on the drinking water outlet tube 5 when the animal accidentally touches or bites it, and preventing the connection between the drinking water outlet tube 5 and the connecting joint 4 from becoming loose due to drag. When a small amount of water leaks from the drinking water outlet pipe 5, the leaked water droplets will drip into the U-shaped extension groove of the water receiving base 9 below. The water receiving base 9 collects the leaked drinking water, preventing the bedding in the cage from becoming damp and moldy due to the leak. The supporting connecting cylinder 8 and the water receiving base 9 support the bottom of the water storage cylinder 1, maintaining the stability of the support. In addition, the mounting clip 10 and the clamping frame 11 further stabilize the water storage cylinder 1, preventing the drinking device from slipping during the impact of the experimental animal.

[0024] Working principle: When using this laboratory animal automatic constant pressure water supply device, the water supply pipe controls the valve 15 to inject drinking water into the water storage cylinder 1. The transparent capacity scale on the side wall of the water storage cylinder 1 allows for direct observation of the remaining water volume. The gasket at the connection between the top cover 14 and the water storage cylinder 1 enhances the seal. At the same time, the exhaust pipe on the top cover 14, together with the exhaust pipe filter cylinder 16 with built-in medical-grade meltblown cloth, balances the internal air pressure of the water storage cylinder 1 and filters the incoming air, preventing drinking water contamination and top leakage. Subsequently, the drinking water in the water storage tank 1 flows in through the strip-shaped water inlet hole on the surface of the water guide core tube 3, which is vertically set along the axial direction at the sealing cone seat 2, under the action of gravity. It is then sealed and transmitted to the drinking water outlet pipe 5 through the connecting joint 4 and delivered to the cage. When the experimental animal licks the licking ball 6 at the end of the drinking water outlet pipe 5, the ball rotates, and the drinking water flows out along the gap between the ball and the outlet pipe for drinking. The polytetrafluoroethylene nozzle protective sleeve 7 near the ball section of the drinking water outlet pipe 5 can alleviate the drag when the animal bites the drinking water outlet pipe 5 and reduce the friction between the drinking water outlet pipe 5 and the sealing cone seat 2. Next, the support connecting tube 8 wraps around the bottom end of the sealing cone seat 2, and the water receiving base 9, which is engaged at the bottom end of the support connecting tube 8, collects the water droplets dripping from the drinking water outlet pipe 5 through the water receiving groove of the U-shaped extension structure, so as to prevent the cage bedding from becoming damp and moldy due to drinking water leakage. The drinking water equipment is a fixed assembly consisting of a mounting clip 10, a clamping frame 11, and a clamping adjustment nut 13. Rotating the clamping adjustment nut 13 causes the clamping frame 11 to move along the screw at the side end of the mounting clip 10. Combined with the rubber pad 12 that is fixed to the inner wall of the mounting clip 10 and the clamping frame 11, the device is firmly clamped to the side wall of the experimental animal cage, preventing the device from sliding and increasing the overall practicality.

[0025] 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.

[0026] 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. An automatic constant-pressure water supply device for laboratory animals, comprising: The water storage cylinder (1) is the main storage container for drinking water for experimental animals. The bottom end of the water storage cylinder (1) is fitted with a sealing cone seat (2), and the bottom end of the sealing cone seat (2) is sealed to the drinking water outlet pipe (5) through a connecting joint (4). The end port of the drinking water outlet pipe (5) is rotatably fitted with a licking ball (6). The above structures together constitute the main structure of the drinking device. The features are as follows: the upper opening of the water storage cylinder (1) is covered with a cylinder top cover (14), and the cylinder top cover (14) is penetrated by the water inlet pipe of the water supply pipe control valve (15), and the water inlet pipe of the water supply pipe control valve (15) extends into the interior of the water storage cylinder (1). An exhaust pipe is provided through the cylinder top cover (14), and one end of the exhaust pipe is connected to the interior of the water storage cylinder (1). The water storage cylinder (1) is fitted with an installation clip (10) on its outer wall surface, and a rectangular plane is provided on the side end of the installation clip (10). A screw is vertically provided at the center of the rectangular plane. The screw of the installation clip (10) passes through the clamping frame (11), and the outer wall surface of the clamping frame (11) is rotatably connected to the clamping adjusting nut (13) through a bearing. The clamping adjusting nut (13) is threadedly connected to the screw of the installation clip (10) through the inner wall thread. The bottom end of the sealing cone seat (2) is wrapped by the support connecting tube (8), and the bottom end of the support connecting tube (8) is engaged with one end of the water receiving base (9). The water receiving base (9) is set in a vertical position inside the experimental animal cage. The water receiving base (9) has a U-shaped extension structure facing the licking ball (6), and the groove in the extension structure of the water receiving base (9) is a water receiving trough.

2. The automatic constant-pressure water supply device for laboratory animals according to claim 1, characterized in that: The water storage cylinder (1) has transparent capacity scale lines on its side wall, and a gasket is provided at the connection between the water storage cylinder (1) and the top cover (14).

3. The automatic constant-pressure water supply device for laboratory animals according to claim 1, characterized in that: The sealing cone seat (2) has a water guide core pipe (3) vertically arranged along the axial direction at the water outlet pipe, and the water guide core pipe (3) extends into the water storage cylinder (1), and the surface of the water guide core pipe (3) is provided with strip-shaped water inlet holes at equal intervals.

4. The automatic constant-pressure water supply device for laboratory animals according to claim 1, characterized in that: The drinking water outlet pipe (5) is fitted with a mouthpiece protective sleeve (7) on the outer wall of the section near the licking ball (6), and the mouthpiece protective sleeve (7) is made of polytetrafluoroethylene.

5. The automatic constant-pressure water supply device for laboratory animals according to claim 1, characterized in that: The cross-section of the support connecting cylinder (8) is set as a C-shaped structure, and the support connecting cylinder (8) is penetrated by the drinking water outlet pipe (5). The upper end of the support connecting cylinder (8) is provided with a groove that matches the sealing cone seat (2), and the bottom end of the support connecting cylinder (8) is engaged and connected inside the water receiving base (9).

6. The automatic constant-pressure water supply device for laboratory animals according to claim 1, characterized in that: The clamping frame (11) and the mounting clamp (10) are fixedly mounted with rubber pads (12) on their respective inner walls, and the surface of the rubber pads (12) is provided with wavy anti-slip texture.

7. The automatic constant-pressure water supply device for laboratory animals according to claim 1, characterized in that: The exhaust pipe of the top cover (14) is fitted with an exhaust pipe filter cylinder (16), and the microbial filter cotton inside the exhaust pipe filter cylinder (16) is medical grade meltblown cloth.

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