Breeding type double-layer experimental animal isolator

Abstract

The invention discloses a rearing type double-layer experimental animal isolator, and aims to solve the problems that a traditional single-layer rearing isolator is small in animal breeding quantity, large in occupied area and high in labor intensity due to manual excrement removal. The isolator adopts a double-layer box body structure and comprises an upper-layer box body and a lower-layer box body which are communicated with each other, and excrement receiving devices and air conditioning systems are arranged at the bottoms of the isolator. The excrement receiving device is composed of an excrement receiving disc and an excrement scraping device, and excrement is automatically cleaned to the excrement collecting box through an excrement scraping plate. A feces discharge device is arranged in the feces collection box, and a stirring paddle and an electric valve are matched with a concentric-square-shaped bent pipe, so that feces can be discharged in time, and manual intervention is reduced. The air conditioning system adopts an independent air supply system and an air exhaust system, an air supply outlet and an air exhaust outlet are optimally designed to ensure uniform airflow, the air supply outlet and the air exhaust outlet are diagonally arranged, an upper-supply and lower-return air supply mode is adopted, the air supply outlet adopts a static pressure pore plate to supply air, and the air conditioning system has the characteristics of uniform air supply, low noise and small blowing feeling to animals, and provides a good raising environment for the animals.

Description

Technical Field

[0001] The present invention relates to the technical field of animal isolation breeding, and more specifically, it relates to a breeding-type double-layer experimental animal isolator. Background Art

[0002] The problems of the currently used breeding-type experimental animal isolators are as follows: single-layer breeding, with a small number of experimental animals raised, large floor area; manual removal of feces and sewage, high labor intensity, requiring a large number of workers, and serious environmental pollution; such isolators are difficult to meet the current market demand for experimental animals, resulting in an increase in labor costs for personnel, and further increasing the breeding cost of experimental animals. Summary of the Invention

[0003] The present invention overcomes the following deficiencies in the prior art: (1) the problem of single-layer breeding, with a small number of experimental animals raised and large floor area; (2) the problem of manual removal of feces and sewage, high labor intensity, requiring a large number of workers, and serious environmental pollution; and provides a breeding-type double-layer experimental animal isolator, which has a double-layer isolation space and can increase the number of experimental animals raised under a limited floor area; at the same time, it can automatically remove feces and sewage, reduce the labor intensity of workers, reduce the use of workers, and thus can reduce the breeding cost of experimental animals.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: a breeding-type double-layer experimental animal isolator, comprising: an upper box body and a lower box body that are interconnected; a feces receiving device and an air conditioning system are provided at the bottoms of the upper box body and the lower box body; The feces receiving device includes a feces receiving tray and a feces scraping device arranged in the feces receiving tray; an excrement outlet is provided at one end of the feces receiving tray; A manure collection box is provided at one end of the lower box body close to the excrement outlet, and a manure discharging device for discharging the feces in the manure collection box is arranged in the manure collection box; The feces scraping device discharges the feces and sewage in the feces receiving tray from the excrement outlet, the feces and sewage discharged from the excrement outlet fall into the manure collection box, and then the manure discharging device discharges the feces and sewage in the manure collection box.

[0005] By providing a feces receiving tray and a feces scraping device, the present invention can realize the automatic cleaning function of feces and sewage, and at the same time, by providing a manure discharging device, the feces and sewage in the manure collection box can be discharged from the manure collection box in time. It can reduce the labor intensity of workers and reduce the labor cost; and the double-layer box body structure adopted in this application can increase the breeding space in a limited space and improve the space utilization rate.

[0006] Preferably, the feces scraping device includes: sprocket shafts respectively arranged at both ends of the feces receiving tray, sprockets arranged on the sprocket shafts, and chains wound around the sprockets; a plurality of feces scraping plates arranged parallel to the sprocket shafts are provided on the chains; one of the sprocket shafts is connected to a scraper motor.

[0007] The manure scraping motor rotates, driving the sprocket shaft to rotate. The sprocket shaft drives the sprocket fixed thereto to rotate. Then, the sprocket drives the chain connected thereto to rotate, and the chain drives the manure scraping plate to move. The manure scraping plate scrapes the manure in the manure receiving tray towards the manure outlet direction, so as to scrape all the manure in the manure receiving tray out from the manure outlet, and the manure drops into the manure collecting box.

[0008] Preferably, a flusher is provided at one end far from the manure outlet.

[0009] The water sprayed by the flusher can clean the manure in the manure receiving tray more cleanly.

[0010] Preferably, the manure receiving tray is inclined downward in the direction towards the manure outlet.

[0011] The manure receiving tray is inclined, so that the manure can be discharged from the manure outlet more easily. And after the manure receiving tray is cleaned by the flusher, the clear water in the manure receiving tray can flow downward along the manure receiving tray, so that the water droplets in the manure receiving tray can dry faster, reducing the breeding of bacteria.

[0012] Preferably, the manure discharging device includes: a stirring paddle arranged in the manure collecting box, a stirring motor connected to the stirring paddle, and an electric valve connected to the outlet of the manure collecting box; the electric valve is connected to a return bend pipe.

[0013] Driven by the stirring motor, the stirring paddle rotates, and the stirring paddle discharges the manure towards the outlet direction of the manure collecting box. The electric valve controls the opening or closing of the outlet of the manure collecting box. The return bend pipe can generate a siphon effect, which can accelerate the discharging speed of the manure in the manure collecting box. At the same time, the water seal in the return bend pipe can isolate the air flow inside and outside the separator.

[0014] Preferably, the air conditioning system includes a air supply system and an exhaust system; The air supply system includes a fresh air inlet, a high-efficiency air supply filter, a air supply fan, an air supply duct and an air supply outlet that are connected in sequence. An air supply airtight valve for controlling the air supply switch is arranged on the air supply duct; The exhaust system includes an old air outlet, a high-efficiency exhaust filter, an exhaust duct and an exhaust outlet that are connected in sequence. An exhaust airtight valve for controlling the exhaust switch is arranged on the exhaust duct.

[0015] The fresh air of the air conditioning system enters from the fresh air inlet, is filtered by the high-efficiency air supply filter, then is discharged by the air supply fan, then passes through the air supply duct, and finally is discharged into the upper box body and the lower box body from the air supply outlet to supply air to the breeding area. The old air in the box body enters the exhaust duct after passing through the exhaust outlet, then is sent to the high-efficiency exhaust filter, and is discharged from the old air outlet after being filtered by the high-efficiency exhaust filter. Controlling the air supply fan can ensure the required air supply frequency and pressure difference in the upper box body and the lower box body.

[0016] Preferably, an air supply outlet is provided in each of the upper box body and the lower box body, and the two air supply outlets are both communicated with the same air supply duct; An exhaust outlet is provided in each of the upper box body and the lower box body, and the two exhaust outlets are both communicated with the same exhaust duct; The connecting lines between the exhaust outlets and the air supply outlets in the upper box body and the lower box body are obliquely arranged, and the exhaust outlets are arranged obliquely above the air supply outlets.

[0017] In this application, a pair of mutually cooperating air supply outlets and exhaust outlets are provided in both the upper box body and the lower box body. A pair of air supply outlets and exhaust outlets in the two box bodies perform air supply and exhaust through the same set of air conditioning system, so that the overall structure can be more compact.

[0018] Preferably, the air supply outlet and the exhaust outlet are arranged diagonally, the air supply outlet is arranged obliquely above the exhaust outlet, and the air supply outlet adopts static pressure orifice plate air supply.

[0019] The air supply outlet and the exhaust outlet are arranged diagonally, adopting the air supply form of upper air supply and lower return. The air supply outlet adopts static pressure orifice plate air supply, which has the characteristics of uniform air supply, low noise and small blowing feeling on animals.

[0020] Preferably, transfer windows are provided at one end of the upper box body and the lower box body in their length directions.

[0021] The transfer window is used to transfer the items in the upper box body and the lower box body.

[0022] Preferably, a bracket is provided at the bottom of the lower box body.

[0023] The bracket can isolate the lower box body from the ground, and at the same time can also reserve extra installation space for the manure collection box.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: in the present invention, by providing a feces receiving tray and a feces scraping device, the automatic cleaning function of feces and urine can be realized. At the same time, by providing a feces discharging device, the feces and urine in the manure collection box can be discharged from the manure collection box in time. It can reduce the labor intensity of workers and lower the labor cost; and the double-layer box structure adopted in this application can increase the breeding space in a limited space and improve the space utilization rate.

[0025] By providing an air conditioning system, the air in the upper box body and the lower box body can be replaced, providing a fresh oxygen supply environment for the organisms inside, which is beneficial to the growth of the breeding organisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the front view of the present invention.

[0027] Figure 2 is the three-dimensional structure diagram of the present invention.

[0028] Figure 3 is a structural schematic diagram of the feces collection device of the present invention.

[0029] Figure 4 is a front view of the feces collection device of the present invention.

[0030] Figure 5 is a front view of the observation window of the present invention.

[0031] Figure 6 is a structural schematic diagram of the air conditioning system of the present invention.

[0032] Figure 7 is a structural schematic diagram of the feces collection device in Embodiment 3 of the present invention.

[0033] Figure 8 is a three-dimensional structural schematic diagram of the feces scraping device in Embodiment 3 of the present invention. Detailed implementation manners

[0034] The technical solution of the present invention will be further specifically described below through specific embodiments in conjunction with the drawings: Embodiment 1: Refer to Figures 1 to 6 As shown, a breeding-type double-layer experimental animal isolator includes: an upper box body 21 and a lower box body 2 that are interconnected; a feces collection device 9 and an air conditioning system 6 are provided at the bottoms of both the upper box body 21 and the lower box body 2; the feces collection device 9 includes a feces collection tray 91 and a feces scraping device disposed in the feces collection tray 91; one end of the feces collection tray 91 is provided with a feces outlet; a feces collection box 5 is provided at one end of the lower box body 2 close to the feces outlet, and a feces discharging device for discharging the feces in the feces collection box 5 is provided in the feces collection box 5; The feces scraping device discharges the fecal sewage in the feces collection tray 91 from the feces outlet, the fecal sewage discharged from the feces outlet falls into the feces collection box 5, and then the fecal sewage in the feces collection box 5 is discharged through the feces discharging device.

[0035] A control box 1 is provided at the top of the upper box body 21, and a support 8 is provided at the bottom of the lower box body 2, and the lower box body 2 is supported on the support 8. The support 8 can isolate the lower box body 2 from the ground, and at the same time can also leave extra installation space for the feces collection box 5.

[0036] The upper box body 21 and the lower box body 2 are connected by a connecting flange 7 to form a sealed box body. Inside this sealed box body, external items are transferred through a transfer window 4. Therefore, a transfer window 4 is provided at one end of the upper box body 21 and the lower box body 2 in the length direction thereof, respectively for transferring items in the upper box body 21 and the lower box body 2.

[0037] Observation windows 3 are provided on the side walls of both the upper box body 21 and the lower box body 2; an operation sleeve 33 is provided on the observation window 3. The observation window 3 is hermetically connected to the upper box body 21 or the lower box body 2 through a connector 31. The connector 31 is used to switch the observation window 3 and can press the observation window 3 against the upper box body 21 and the lower box body 2. The observation window 3 in this application is made of tempered glass 32 (or acrylic glass). The operation sleeve 33 includes a sealing flange for connecting to the observation window 3 and a plastic sleeve.

[0038] In one embodiment, the manure scraping device includes: sprocket shafts 96 respectively provided at both ends of the manure receiving tray 91, sprockets 95 provided on the sprocket shafts 96, and chains 97 wound around the sprockets 95; a sprocket 95 is provided at each end of the sprocket shaft 96, and the two chains 97 are respectively wound around both ends of the sprocket 95. A number of manure scraping plates 92 parallel to the sprocket shaft 96 are provided on the chain 97, and both ends of the manure scraping plate 92 are fixedly connected to the two chains 97 respectively; one of the sprocket shafts 96 is connected to the scraping motor 94, and the scraping motor 94 is connected to the sprocket shaft 96 through a sealed shaft seal, and the sealed shaft seal passes through the side walls of the upper box body 21 and the lower box body 2. The sprocket shaft 96 is arranged along the width direction of the manure receiving tray 91.

[0039] When the scraping motor 94 rotates, it drives the sprocket shaft 96 to rotate. The sprocket shaft 96 drives the sprocket 95 fixed to it to rotate. Then the sprocket 95 drives the chain 97 connected to it to rotate. The chain 97 drives the manure scraping plate 92 to move. The manure scraping plate 92 scrapes the manure in the manure receiving tray 91 towards the manure outlet direction, so as to scrape all the manure in the manure receiving tray 91 out from the manure outlet, and the manure falls into the manure collecting box 5.

[0040] In one embodiment, a flusher 93 is provided at one end away from the manure outlet. The water outlet of the flusher 93 is arranged along the width direction of the manure receiving tray 91. Spraying water by the flusher 93 can clean the manure in the manure receiving tray 91 more thoroughly.

[0041] In one embodiment, the manure receiving tray 91 is inclined downward towards the manure outlet direction. The inclined setting of the manure receiving tray 91 enables the manure to be discharged from the manure outlet more easily. And after the manure receiving tray 91 is washed clean by the flusher 93, the clear water in the manure receiving tray 91 can flow downward along the manure receiving tray 91, so that the water droplets in the manure receiving tray 91 can dry faster and reduce the growth of bacteria.

[0042] In one embodiment, the manure discharging device includes: a stirring paddle 51 provided in the manure collecting box 5, a stirring motor 52 connected to the stirring paddle 51, and an electric valve 53 connected to the outlet of the manure collecting box 5; the electric valve 53 is connected to a return bend 54. The stirring motor 52 is connected to the stirring paddle 51 through a sealed shaft seal.

[0043] Driven by the stirring motor 52, the stirring paddle 51 rotates, and the stirring paddle 51 discharges the manure towards the outlet direction of the manure collection box 5. The electric valve 53 controls the opening or closing of the outlet of the manure collection box 5. The return bend 54 can generate a siphon effect, which can accelerate the discharge speed of the manure in the manure collection box 5. At the same time, the water seal in the return bend 54 can isolate the air flow inside and outside the isolator.

[0044] In one embodiment, the air conditioning system 6 includes a supply air system and an exhaust air system; The supply air system includes a fresh air inlet 65, a supply air high-efficiency filter 64, a supply air fan, a supply air duct 62, and a supply air outlet 61 that are connected in sequence. A supply air airtight valve 63 for controlling the supply air switch is provided on the supply air duct 62; The exhaust air system includes an old air inlet 60, an exhaust air high-efficiency filter 96, an exhaust air duct 67, and an exhaust air outlet 66 that are connected in sequence. An exhaust air airtight valve 68 for controlling the exhaust air switch is provided on the exhaust air duct 67.

[0045] Both the exhaust air duct 67 and the supply air duct 62 are provided at one end of the upper box body 21 and the lower box body 2 away from the transfer window 4.

[0046] Both the supply air outlet 61 and the exhaust air outlet 66 are arranged along the length direction of the upper box body 21 and the lower box body 2.

[0047] The working principle of the entire air conditioning system 6 is as follows: The fresh air of the air conditioning system 6 enters from the fresh air inlet 65, is filtered by the supply air high-efficiency filter 64, then discharged through the supply air fan, then passes through the supply air duct 62, and finally is discharged from the supply air outlet 61 into the upper box body 21 and the lower box body 2 to supply air to the breeding area. The old air in the box body enters the exhaust air duct 67 after passing through the exhaust air outlet 66, then is sent to the exhaust air high-efficiency filter 96, and after being filtered by the exhaust air high-efficiency filter 96, it is discharged from the old air inlet 60. Controlling the supply air fan can ensure the required supply air frequency and pressure difference in the upper box body 21 and the lower box body 2.

[0048] The supply air outlet 61 and the exhaust air outlet 66 are arranged diagonally. The supply air outlet 61 is arranged diagonally above the exhaust air outlet 66, and the supply air outlet 61 uses a static pressure orifice plate for air supply.

[0049] The supply air outlet 61 and the exhaust air outlet 66 are arranged diagonally, adopting an air supply form of supplying air from above and exhausting air from below. The supply air outlet 61 uses a static pressure orifice plate for air supply, which has the characteristics of uniform air supply, low noise, and small blowing feeling on animals.

[0050] There are two supply air outlets 61 and two exhaust air outlets 66 in this embodiment. That is to say, there is one supply air outlet 61 in each of the upper box body 21 and the lower box body 2, and the two supply air outlets 61 are both connected to the same supply air duct 62.

[0051] An air outlet 66 is respectively arranged in the upper box body 21 and the lower box body 2, and the two air outlets 66 are both communicated with the same exhaust duct 67.

[0052] The connecting lines between the air outlet 66 in the upper box body 21 and the lower box body 2 and the air supply outlet 61 are inclined, and the air outlet 66 is arranged obliquely above the air supply outlet 61.

[0053] In this application, a pair of mutually cooperating air supply outlets 61 and air outlets 66 are arranged in both the upper box body 21 and the lower box body 2. A pair of air supply outlets 61 and air outlets 66 in the two boxes are used for air supply and exhaust through the same air conditioning system 6, so that the overall structure can be more compact.

[0054] The working principle of the present invention is as follows: (1) Timed removal of feces and sewage (see Figure 3 , 4): The feces and sewage of animals fall onto the bottom plate of the feces receiving tray 91. When the defecation time arrives, the scraper motor 94 is automatically controlled to start. The sprocket 95 drives the chain 97 to rotate clockwise, and the chain 97 drives the manure scraping plate 92 to rotate and move. The manure scraping plate 92 in contact with the bottom plate of the feces receiving tray 91 moves from right to left. The manure scraping plate 92 runs closely against the bottom plate of the feces receiving tray 91, scrapes the feces and sewage on the feces receiving tray 91 to the left end, and falls into the manure collecting box 5 from the manure outlet. At the same time, the flusher 93 is automatically controlled to flush continuously, and the running chain 97, sprocket 95, manure scraping plate 92 and feces receiving tray 91 are washed clean. The manure scraping plate 92 runs continuously until the feces and sewage on the feces receiving tray 91 are cleared, and the defecation cycle ends.

[0055] (2) Sewage discharge process (see Figure 3 , 4): After the feces and sewage removal program ends, all feces and sewage enter the manure collecting box 5, and the stirring motor 52 is controlled to start stirring the feces and sewage; the sewage discharge electric valve 53 is controlled to open, and the feces and sewage in the manure collecting box 5 are discharged to the underground pipe network through the return bend. The siphon vacuum generated by the return bend speeds up the sewage discharge speed, and at the same time, the water seal in the elbow isolates the air circulation inside and outside the isolator. After the sewage discharge ends, the stirring motor 52 is controlled to stop running, and the sewage discharge electric valve 53 is controlled to close, and the automatic feces and sewage cleaning process ends.

[0056] (3) Principle of the air conditioning system 6 (see Figure 6 ): Fresh air of the air conditioning system 6 enters from the fresh air inlet 65, is filtered by the air supply high-efficiency filter 64, and then is discharged through the air supply fan, then passes through the air supply duct 62, and finally is discharged into the upper box body 21 and the lower box body 2 from the air supply outlet 61 to supply air to the breeding area. The old air in the box body enters the exhaust duct 67 after passing through the air outlet 66, and then is sent to the exhaust high-efficiency filter 96. After being filtered by the exhaust high-efficiency filter 96, it is discharged from the old air outlet 60. By controlling the air supply fan, the required air supply frequency and pressure difference in the upper box body 21 and the lower box body 2 can be ensured.

[0057] In the upper box body 21 and the lower box body 2, an air conditioning method of upper air supply and lower air return is adopted. The setting of the static pressure air supply outlet 61 ensures uniform air supply, low noise, and no blowing feeling for animals. The exhaust outlet 66 is arranged on the front side, close to the side of the plastic sleeve, which is convenient for replacing the filter on the exhaust outlet 66.

[0058] (4) Transfer window 4 (see Figure 1 ): It is equipped with gas disinfection and mechanical interlocking doors, and is used for transferring animal feed, experimental equipment, etc. The plastic sleeve is set for daily operations of personnel, etc.

[0059] (5) Observation window 3 (see Figure 5 ): It is made of tempered glass 32 (or acrylic board), and an operation sleeve 33 and a connector 31 are installed on it. During the use of the isolator, the operation sleeve 33 is airtight with the upper box body 21 and the lower box body 2. The plastic sleeve is used for daily work, and the transparent structure is used for observing the interior. After the breeding is completed, it is opened for cleaning, disinfection, maintenance, etc.

[0060] In the present invention, by setting the feces receiving tray 91 and the feces scraping device, the automatic cleaning function of feces and sewage can be realized. At the same time, by setting the feces discharging device, the feces and sewage in the manure collecting box 5 can be discharged from the manure collecting box 5 in time. It can reduce the labor intensity of workers and lower the labor cost; and the double-layer box body structure adopted in this application can increase the breeding space in a limited space and improve the space utilization rate.

[0061] Example 2: Refer to Figures 1 to 8 As shown, the structure in this embodiment is similar to that in Embodiment 1. The difference is that a number of mounting strips 98 are provided on the chain 97, and the mounting strip 98 and the manure scraping plate 92 are connected by an elastic member 981. The two ends of the mounting strip 98 are respectively fixedly connected to the two chains 97, and the direction of the axis of the mounting strip 98 is the same as the direction of the axis of the sprocket shaft 96, and the two are arranged in parallel; the mounting strip 98 and the manure scraping plate 92 are connected by an elastic member 981. The elastic member in this embodiment adopts a spring, and each mounting strip 98 and the manure scraping plate 92 are connected by a spring.

[0062] In this embodiment, the mounting strip 98 and the manure scraping plate 92 are connected by an elastic member 981, so that when the manure scraping plate 92 contacts the feces receiving tray 91, the manure scraping plate 92 and the bottom of the feces receiving tray 92 form an inclined angle, so that the manure scraping plate 92 can closely fit the bottom of the feces receiving tray 91, thereby being able to clean the feces and sewage at the bottom of the feces receiving tray 91 more cleanly.

[0063] In one embodiment, a dirt shield 99 is provided on one side of the lower box body 2 and the upper box body 21 close to the manure outlet, and a retaining rod 991 is provided on the dirt shield 99; when the manure scraping plate 92 moves to the position of the manure outlet, it abuts against the retaining rod 991, and the retaining rod 991 temporarily blocks the manure scraping plate 92, causing the elastic member 981 to bend and deform. After the elastic member 981 deforms, the manure scraping plate 92 crosses over the elastic member 981, and the restoration of the elastic member 981 drives the manure scraping plate 92 to swing.

[0064] In actual use, it is found that the manure scraping plate 92 contacts the manure receiving tray 91 below the chain 97. When the manure scraping plate 92 moves above the chain 97, the manure and sewage on the manure scraping plate 92 will flow downward along the manure scraping plate 92, resulting in relatively serious pollution of the manure scraping plate 92. To solve the above problems, a retaining rod 991 is provided in this embodiment, which can block the manure scraping plate 92. As the chain 97 moves, it drives the bottom mounting strip 98 to move, causing the elastic member 981 to tilt and bend. During this process, the mounting strip 98 moves with the chain 97, causing the elastic member 981 to continuously bend. When the mounting strip 98 moves a certain distance, the elastic member 981 will then slide under the retaining rod 991. Under the action of the elastic member 981, it can drive the manure scraping plate 92 to swing, so that the manure and water stains at the end of the manure scraping plate 92 are thrown out. The thrown manure and water stains fall on the inner side wall of the dirt shield 99 and then fall into the manure collection box along the inner side wall of the dirt shield 99. Thus, it can prevent the water stains and manure from flowing along the manure scraping plate 92, effectively ensuring the cleanliness of the manure scraping plate 92 and reducing the pollution of manure. The dirt shield only needs to be rinsed with clean water regularly.

[0065] The above-described embodiments are only preferred solutions of the present invention and do not impose any form of limitation on the present invention. There are other variations and modifications without exceeding the technical solutions described in the claims.

Claims

1. A breeding-type double-layer experimental animal isolator, characterized in that, Comprising: An upper box body and a lower box body that are interconnected; A feces collection device and an air conditioning system are provided at the bottoms of the upper box body and the lower box body; The feces collection device includes a feces collection tray and a feces scraping device arranged in the feces collection tray; a feces outlet is provided at one end of the feces collection tray; A feces collection box is provided at one end of the lower box body close to the feces outlet, and a feces discharging device for discharging the feces in the feces collection box is arranged in the feces collection box; The feces scraping device discharges the fecal sewage in the feces collection tray from the feces outlet, the fecal sewage discharged from the feces outlet falls into the feces collection box, and then the fecal sewage in the feces collection box is discharged through the feces discharging device.

2. The breeding-type double-layer experimental animal isolator according to claim 1, characterized in that, The feces scraping device includes: sprocket shafts respectively arranged at both ends of the feces collection tray, sprockets arranged on the sprocket shafts, and chains wound around the sprockets; a plurality of feces scraping plates arranged parallel to the sprocket shafts are arranged on the chains; one of the sprocket shafts is connected to a scraping plate motor.

3. The breeding-type double-layer experimental animal isolator according to claim 2, characterized in that, A flusher is provided at one end away from the feces outlet.

4. The breeding-type double-layer experimental animal isolator according to claim 2 or 3, characterized in that, The feces collection tray is arranged to slope downward in the direction towards the feces outlet.

5. The breeding-type double-layer experimental animal isolator according to claim 1, wherein The feces discharging device includes: a stirring paddle arranged in the feces collection box, a stirring motor connected to the stirring paddle, and an electric valve connected to the outlet of the feces collection box; the electric valve is connected to a return bend pipe.

6. The breeding type double-layer experimental animal isolator according to claim 1, characterized in that, The air conditioning system includes a air supply system and an air exhaust system; The air supply system includes a fresh air inlet, an air supply high-efficiency filter, an air supply fan, an air supply duct and an air supply outlet that are connected in sequence, and an air supply airtight valve for controlling the air supply switch is arranged on the air supply duct; The air exhaust system includes an old air inlet, an air exhaust high-efficiency filter, an air exhaust duct and an air exhaust outlet that are connected in sequence, and an air exhaust airtight valve for controlling the air exhaust switch is arranged on the air exhaust duct.

7. The breeding-type double-layer experimental animal isolator according to claim 6, characterized in that, One air supply outlet is respectively arranged in the upper box body and the lower box body, and the two air supply outlets are both connected to the same air supply duct; One air exhaust outlet is respectively arranged in the upper box body and the lower box body, and the two air exhaust outlets are both connected to the same air exhaust duct; The connecting lines between the air exhaust outlets and the air supply outlets in the upper box body and the lower box body are arranged obliquely, and the air exhaust outlets are arranged obliquely above the air supply outlets.

8. The breeding-type double-layer experimental animal isolator according to claim 6 or 7, characterized in that, The air supply outlet and the air exhaust outlet are arranged diagonally, the air supply outlet is arranged obliquely above the air exhaust outlet, and the air supply outlet adopts static pressure orifice plate air supply.

9. The breeding-type double-layer experimental animal isolator according to claim 2, wherein, A plurality of mounting strips are arranged on the chain, and the mounting strips and the feces scraping plates are connected by elastic members.

10. The breeding-type double-layer experimental animal isolator according to claim 9, characterized in that, in A dirt retaining cover is provided on one side of the lower box body and the upper box body close to the feces outlet, and a retaining rod is arranged on the dirt retaining cover; when the feces scraping plate moves to the position of the feces outlet, it abuts against the retaining rod, and the retaining rod plays a temporary blocking role on the feces scraping plate, so that the elastic member bends and deforms. After the elastic member deforms, the feces scraping plate crosses the elastic member, and the elastic member restores to drive the feces scraping plate to swing.

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