An animal carcass sterilization and digestion processing device

Abstract

The present invention discloses an animal carcass sterilization and digestion treatment device, which relates to the technical field of animal carcass treatment equipment and includes a main treatment tank, an acid solution cleaning and neutralization unit, an alkali solution preparation and filling unit, a compressed air unit, a temperature control unit, a dryer unit, a steam condensation unit and an exhaust gas treatment unit; it can not only sterilize animal carcasses infected with pathogenic microorganisms, but also the final treatment product is mud-like waste residue, and compared with the animal carcasses to be treated, both the weight and volume are greatly reduced. The present invention is provided with a relatively independent dryer. After the treatment product in the main treatment tank is discharged into the dryer, the main treatment tank can start the next treatment process, and the drying process starts in the dryer, that is, the drying process of this batch can be carried out simultaneously with the sterilization and digestion process of the next batch, greatly improving the treatment efficiency. The heating and cooling of the main treatment tank use circulating heat-conducting oil as the heat medium, which has the advantages of short temperature adjustment time, uniform temperature in the main treatment tank, and high safety.

Description

Technical Field

[0001] The present invention relates to the technical field of animal carcass treatment equipment, and particularly to an animal carcass sterilization and digestion treatment equipment. Background Art

[0002] In biosafety level 3 or 4 large animal laboratories (ABSL-3 or ABSL-4 laboratories), large animals such as cattle, sheep, pigs, and horses are used as experimental subjects. The "General Requirements for Biosafety in Laboratories" (GB 19489-2008) requires that ABSL-3 or ABSL-4 laboratories should have devices and technologies for reliable disinfection and sterilization of animal carcasses and wastes to prevent the spread of pathogenic microorganisms. To strengthen the biosafety management of veterinary vaccine production enterprises, the Ministry of Agriculture and Rural Affairs of China announced in Announcement No. 2573 that the "Biosafety Level 3 Protection Standard for Veterinary Vaccine Production Enterprises" has been implemented since August 31, 2017. On October 26, 2018, the Ministry of Agriculture and Rural Affairs issued the "Inspection and Acceptance Evaluation Standard for Biosafety Level 3 Protection in Veterinary Vaccine Production Enterprises", further standardizing the inspection and acceptance of biosafety level 3 protection in veterinary vaccine production enterprises. The above measures of the Ministry of Agriculture and Rural Affairs have improved the protection of pathogenic microorganisms during the research and production of veterinary vaccines, and stipulated that veterinary vaccine production enterprises, especially the efficacy test and challenge area of the animal house for inspection, should be designed with reference to some requirements of ABSL-3 laboratories in GB 19489-2008, and also require the setting of devices that can reliably sterilize animal carcasses.

[0003] Technologies applicable to the sterilization treatment of large animal carcasses usually include incineration, high-pressure steam, refining, alkali hydrolysis, etc. Incineration can completely inactivate all pathogenic microorganisms, but the establishment of incineration facilities in laboratories is not allowed in China. Installing a double-door autoclave between the protection area and the auxiliary area to perform high-pressure sterilization on animal carcasses was a commonly used method before, but there is a risk that uneven heating may lead to incomplete sterilization inside the carcass. Large refining devices can process animal carcasses into sterile liquid and granular solid substances under heating and high-pressure conditions, but they cannot guarantee the killing of prions. Alkali hydrolysis is to decompose the structures of proteins (including prions), fats, and nucleic acids, etc. under the action of high temperature, high pressure, and strong alkali agents, supplemented by a stirring method to achieve complete sterilization.

[0004] CN104557156A discloses an equipment for harmless treatment of infected animal tissues, which uses alkali hydrolysis technology to achieve the sterilization of small animal carcasses such as chickens and rabbits. However, the products after the treatment of this invention include solid residues and liquids, and the BOD and pH values of the liquid products are very high, and they need to be subjected to biochemical treatment in sewage treatment facilities or diluted in a large proportion before they can be discharged, resulting in a heavy burden on post-treatment.

[0005] CN107597818A discloses an equipment for harmless treatment of animal carcasses in a biosafety laboratory. It also adopts the alkali hydrolysis process and can treat small animals such as chickens and rabbits or large animals such as pigs, sheep, and cows carrying pathogenic microorganisms. The treatment process includes: loading, pressure holding test, adding alkali solution, heating up, pressure relief, adding neutralizing agent, drying, cooling, discharging, and cleaning, a total of 10 steps. The treatment product is a dried mud-like substance, which reduces the burden of post-treatment of the product. However, there are also certain problems with this invention: only one treatment tank is set, and all process flows are completed in the treatment tank, resulting in a relatively long treatment cycle; when using high-temperature steam to heat the treatment tank, the heating speed is slow, and the temperature uniformity and safety are poor; since the weighing is carried out by integrating a weighing sensor on the tank body, a certain flexibility is required for the biological seal through floors. Sealing is achieved by using flanges and gaskets, and there is a risk of seal failure due to long-term thermal expansion and contraction deformation. Moreover, the sealing problems of water, gas, electricity, etc. passing through floors in the equipment are not considered; the problem of biosafety and odor removal is not considered when the treatment tank exhausts to the outside. Summary of the Invention

[0006] To solve the above technical problems, the present invention provides an equipment for sterilization and digestion treatment of animal carcasses, which can not only sterilize the animal carcasses infected with pathogenic microorganisms, but also the final treatment product is a mud-like residue, and both the weight and volume are greatly reduced compared to the treated animal carcasses.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides an equipment for sterilization and digestion treatment of animal carcasses, including a main treatment tank, an acid solution cleaning and neutralizing unit, an alkali solution preparation and filling unit, a compressed air unit, a temperature control unit, a dryer unit, a steam condensation unit, and an exhaust gas treatment unit; the acid solution cleaning and neutralizing unit is connected to the top of the main treatment tank, and the alkali solution preparation and filling unit, the compressed air unit, and the temperature control unit are all connected to the middle and lower parts of the main treatment tank. The dryer unit is connected to the bottom of the main treatment tank, and the steam condensation unit and the exhaust gas treatment unit are connected to the upper part of the main treatment tank;

[0009] A stirrer is arranged in the lower part of the main treatment tank. One end of the center of the stirrer is connected to the main treatment tank through a rear shaft, and the other end is connected to a stirring drive device outside the main treatment tank through a drive shaft.

[0010] Optionally, the main treatment tank includes a spherical tank cover and a tank body; the spherical tank cover is arranged on the top of the tank body; a transparent window is arranged on the spherical tank cover, and a camera is arranged outside the transparent window; a heating jacket is arranged at the bottom of the tank body.

[0011] Optionally, the acid cleaning and neutralizing unit includes an acid tank, on which a first manual ball valve, a first pneumatic diaphragm pump, a second manual ball valve, and an acid flow sensor are sequentially connected through pipelines. The outlet end of the acid flow sensor is respectively connected to the main treatment tank and the dryer unit.

[0012] Optionally, the alkali preparation and filling unit includes an alkali tank, on which a third manual ball valve, a second pneumatic diaphragm pump, a fourth manual ball valve, a first check valve, an alkali flow sensor, a first pneumatic ball valve, a second check valve, and a second pneumatic ball valve are sequentially connected through pipelines; the outlet end of the second pneumatic ball valve is connected to the main treatment tank, and a first branch connecting the dryer unit is arranged between the alkali flow sensor and the first pneumatic ball valve.

[0013] Optionally, one end of a first solenoid valve is connected between the first check valve and the alkali flow sensor, and the other end of the first solenoid valve is connected to the alkali tank.

[0014] Optionally, the compressed air unit includes a first pressure reducing valve, a fifth manual ball valve, a third pneumatic ball valve, a third check valve, and a fourth pneumatic ball valve sequentially connected through pipelines, and the outlet end of the fourth pneumatic ball valve is connected to the main treatment tank.

[0015] Optionally, the temperature control unit includes a sixth manual ball valve, a first Y-type filter, a first steam regulating valve, and a fifth pneumatic ball valve sequentially arranged between the high-temperature steam unit and the main treatment tank;

[0016] A second branch is arranged between the first Y-type filter and the first steam regulating valve. One end of the second branch is connected between the first Y-type filter and the first steam regulating valve, and the other end is connected to the first interface of a first plate heat exchanger; the second branch includes a first steam solenoid valve, a first pressure sensor, and a second steam regulating valve sequentially arranged.

[0017] A first gate valve, a second Y-type filter, a first steam trap, a fourth check valve, and a seventh manual ball valve are sequentially arranged between the second interface of the first plate heat exchanger and the steam condensation recovery unit;

[0018] The first interface and the second interface of the first plate heat exchanger are connected inside the first plate heat exchanger;

[0019] A fifth check valve and a fourth temperature sensor are sequentially arranged between the third interface of the first plate heat exchanger and the main treatment tank;

[0020] At the fourth interface of the first plate heat exchanger, a seventh pneumatic ball valve, a third temperature sensor, a first heat-conducting oil pump, a third Y-type filter, a heat-conducting oil buffer pipe, and a heat-conducting oil buffer tank are connected in sequence. An interface is provided on the heat-conducting oil buffer pipe to communicate with the main treatment tank;

[0021] A first safety valve, a liquid level sensor, and a third pressure sensor are provided on the heat-conducting oil buffer tank;

[0022] Between the seventh pneumatic ball valve and the third temperature sensor, it is connected to the first interface of the second plate heat exchanger through an eighth pneumatic ball valve;

[0023] Between the fifth check valve and the fourth temperature sensor, it is connected to the second interface of the second plate heat exchanger through a sixth check valve;

[0024] The first interface and the second interface of the second plate heat exchanger are connected inside the second plate heat exchanger;

[0025] A second temperature sensor and a first flow switch are sequentially provided between the third interface of the second plate heat exchanger and the cooling water recovery unit;

[0026] A first temperature sensor, a second pressure sensor, and a sixth pneumatic ball valve are sequentially provided between the fourth interface of the second plate heat exchanger and the cooling water unit;

[0027] The third interface and the fourth interface of the second plate heat exchanger are connected inside the second plate heat exchanger.

[0028] Optionally, the stirring drive device includes a motor. The motor is arranged outside the main treatment tank. The power output shaft of the motor is connected to the drive shaft. A mechanical dynamic seal mechanism is provided between the power output shaft of the motor and the outer wall of the main treatment tank; The mechanical dynamic seal mechanism includes a through-plate mechanical dynamic seal and a lubricating oil storage tank provided on the power output shaft of the motor; The through-plate mechanical dynamic seal and the lubricating oil storage tank are connected by a pipeline. An eleventh manual ball valve is provided at the bottom of the lubricating oil storage tank; A fourth pressure sensor, an eighth manual ball valve, a second safety valve, a ninth manual ball valve, a seventh check valve, a first pressure reducing valve, and a tenth manual ball valve are provided between the lubricating oil storage tank and the compressed air unit.

[0029] Optionally, the dryer unit includes a drying tank. A steam heating jacket is provided outside the drying tank; A stirring motor is provided at the top of the drying tank. The power output shaft of the stirring motor penetrates the drying tank cover. A stirring ring is provided at the tail end of the power output shaft of the stirring motor;

[0030] A spray ball is also arranged in the drying tank, and a second solenoid valve is arranged between the spray ball and the tap water unit;

[0031] A third solenoid valve is arranged between the spray ball and the acid cleaning and neutralization unit;

[0032] A fourth solenoid valve is arranged between the drying tank cover and the lye preparation and filling unit;

[0033] The drying tank cover is communicated with the steam condensation unit;

[0034] A seventh solenoid valve and a second pressure reducing valve are arranged between the drying tank cover and the compressed air unit;

[0035] The seventh solenoid valve and the second pressure reducing valve are communicated with the steam heating jacket through an eighth solenoid valve;

[0036] A sixth solenoid valve is arranged between the steam heating jacket and the cooling water recovery unit;

[0037] A fourth safety valve, a sixth pressure sensor, a third steam regulating valve, a fifth solenoid valve, a fourth Y-type filter and a twelfth manual ball valve are arranged between the steam heating jacket and the high-temperature steam unit;

[0038] A drying tank bottom valve is arranged at the bottom of the drying tank;

[0039] A ninth solenoid valve is arranged between the bottom of the steam heating jacket and the cooling water recovery unit;

[0040] A tenth solenoid valve, a fifth Y-type filter, a second steam trap, an eighth check valve and a second gate valve are arranged between the bottom of the steam heating jacket and the steam condensate unit;

[0041] An eleventh solenoid valve is arranged between the bottom of the steam heating jacket and the cooling water unit;

[0042] A material inlet communicated with the main treatment tank is arranged on the drying tank;

[0043] A fifth pressure sensor and a fifth temperature sensor are arranged on the drying tank.

[0044] Optionally, the steam condensation unit includes a condensation tank, a heat preservation layer is arranged outside the condensation tank, and a flow equalizing plate is arranged in the upper part of the condensation tank;

[0045] An eleventh pneumatic ball valve is arranged between the upper part of the condensation tank and the common drainage pipe above the flow equalizing plate;

[0046] The upper part inside the condensation tank is located below the flow equalizing plate and is connected to the inlet of a water ring pump. The outlet of the water ring pump is connected to the exhaust port. A thirteenth solenoid valve is provided between the outlet of the water ring pump and the cooling water unit.

[0047] A steam condenser is provided in the middle part of the condensation tank. A sixth Y-type filter, a twelfth manual ball valve, a first regulating valve, and a ninth pneumatic ball valve are provided between the first interface of the steam condenser and the cooling water unit.

[0048] A twelfth solenoid valve is provided between the second interface of the steam condenser and the dryer unit.

[0049] The second interface of the steam condenser is connected to the main treatment tank.

[0050] An ultra-high liquid level switch, a high liquid level switch, a low liquid level switch, and an ultra-low liquid level switch are successively provided from top to bottom in the middle and lower part of the condensation tank.

[0051] A fifth temperature sensor is provided at the lower part of the condensation tank.

[0052] The lower part of the condensation tank is connected to the upper part of the condensation tank through an external branch. The external branch includes a fourteenth manual ball valve, a filter, a circulation pump, a fifteenth manual ball valve, a heat exchanger, and a sixth temperature sensor provided successively from bottom to top.

[0053] The connection between the fourteenth manual ball valve and the condensation tank is connected to one end of a thirteenth manual ball valve.

[0054] A first flow balance valve, a seventh temperature sensor, a tenth pneumatic ball valve, a seventh Y-type filter, and a thirty-third manual ball valve are provided between the first interface of the heat exchanger and the cooling water unit.

[0055] An eighth temperature sensor and a sixteenth manual ball valve are provided between the first interface of the heat exchanger and the cooling water recovery unit.

[0056] Optionally, the exhaust gas treatment unit includes a normal exhaust part and an emergency exhaust part provided on the main treatment tank. The normal exhaust part includes a first exhaust gas treatment unit, and the emergency exhaust part includes an exhaust buffer tank and a second exhaust gas treatment unit.

[0057] Optionally, the first exhaust gas treatment unit includes a first pneumatic ball valve, a seventeenth manual ball valve, a first primary high-efficiency filter, a first secondary high-efficiency filter, an eighteenth manual ball valve, and an activated carbon filter that are connected in sequence; the inlet of the first pneumatic ball valve is connected to the main treatment tank, and the outlet of the activated carbon filter is used for exhausting gas; a twenty-second manual ball valve and a twentieth manual ball valve are respectively arranged at the lower parts of the first primary high-efficiency filter and the first secondary high-efficiency filter, a drain hose is arranged at the top of the first activated carbon filter, drain hoses are respectively arranged at the outlet ends of the twenty-second manual ball valve and the twentieth manual ball valve, and the drain hoses are connected to a first water receiving tray.

[0058] Optionally, a connection is made between the first pneumatic ball valve and the seventeenth manual ball valve and one end of a first branch, and a twelfth pneumatic ball valve is arranged at the other end of the first branch.

[0059] Optionally, a twenty-first manual ball valve and a nineteenth manual ball valve are respectively arranged at the upper parts of the first primary high-efficiency filter and the first secondary high-efficiency filter.

[0060] Optionally, an inlet pipe is arranged on the exhaust gas buffer tank, one end of the inlet pipe is connected to the main treatment tank, the other end is connected to the exhaust gas buffer tank, a rupture disc, a pipeline parallel safety valve, and a twenty-third manual ball valve are sequentially arranged on the inlet pipe, a thirty-first manual ball valve is arranged at the bottom of the exhaust gas buffer tank, and the exhaust gas buffer tank is connected to the second exhaust gas treatment unit.

[0061] Optionally, the second exhaust gas treatment unit includes a twenty-ninth manual ball valve, a second primary high-efficiency filter, a second secondary high-efficiency filter, a twenty-fourth manual ball valve, and a second activated carbon filter that are connected in sequence; the inlet of the twenty-ninth manual ball valve is connected to the exhaust gas buffer tank, and the outlet of the second activated carbon filter is used for exhausting gas; a twenty-eighth manual ball valve and a twenty-sixth manual ball valve are respectively arranged at the lower parts of the second primary high-efficiency filter and the second secondary high-efficiency filter, a drain hose is arranged at the top of the second activated carbon filter, drain hoses are respectively arranged at the outlet ends of the twenty-eighth manual ball valve and the twenty-sixth manual ball valve, and the drain hoses are connected to a second water receiving tray.

[0062] Optionally, a twenty-seventh manual ball valve and a twenty-fifth manual ball valve are respectively arranged at the upper parts of the second primary high-efficiency filter and the second secondary high-efficiency filter.

[0063] Optionally, a connection is made between the pipeline parallel safety valve and the twenty-third manual ball valve and one end of a second branch, and a third pneumatic ball valve is arranged at the other end of the second branch.

[0064] Optionally, an exhaust high liquid level switch and an exhaust ultra-high liquid level switch are provided on the exhaust buffer tank.

[0065] The present invention also discloses a floor-piercing sealing device for a high-temperature and high-pressure treatment tank, including a floor embedded part and a sealing plate; an installation hole is preset on the floor slab, the floor embedded part is arranged on the side wall of the installation hole, and the sealing plate is arranged between the floor embedded part and the outer wall of the treatment tank.

[0066] Optionally, the floor embedded part includes a frame body and a plurality of tension bars, the frame body is arranged on the side wall of the installation hole, and the plurality of tension bars are arranged on the side of the frame body facing the floor slab and extend into the floor slab.

[0067] Optionally, the frame body is a rectangular frame formed by splicing and welding C-shaped steels, and the open side of the C-shaped steel faces the floor slab.

[0068] Optionally, one end of the tension bar is welded to the frame body, and the other end is provided with a hook.

[0069] Optionally, the sealing plate includes an upper sealing plate and a lower sealing plate, the upper sealing plate is arranged on the upper part of the floor embedded part, and the lower sealing plate is arranged on the lower part of the floor embedded part.

[0070] Optionally, both the upper sealing plate and the lower sealing plate are welded to the floor embedded part and the treatment tank.

[0071] Optionally, a heat insulation layer is arranged outside the treatment tank, an expansion joint is arranged outside the heat insulation layer, and both the upper sealing plate and the lower sealing plate are welded to the outer wall of the expansion joint.

[0072] Optionally, an electrical pipeline is penetrated through the sealing plate.

[0073] Optionally, a gas or water pipeline is penetrated through the sealing plate.

[0074] The present invention has achieved the following technical effects compared with the prior art:

[0075] The animal carcass sterilization and digestion treatment equipment in the present invention can not only sterilize animal carcasses infected with pathogenic microorganisms, but also the final treatment product is a mud-like waste residue, and its weight and volume are significantly reduced compared to the animal carcasses to be treated. The present invention is provided with a relatively independent dryer. When the treatment product in the main treatment tank is discharged into the dryer, the main treatment tank can start the next treatment process, and the drying process starts in the dryer, that is, the drying process of this batch can be carried out simultaneously with the sterilization and digestion process of the next batch, greatly improving the treatment efficiency. The heating and cooling of the main treatment tank use circulating heat-conducting oil as the heat medium, which has the advantages of short temperature adjustment time, uniform temperature in the main treatment tank, and high safety. The biological seal through floors is sealed by welding the outer shell of the main treatment tank and the embedded full weld, supplemented by expansion joints to buffer thermal expansion and contraction deformation, ensuring long-term reliable sealing, and water, electricity, and gas sealing transfers are set on the sealing steel plate. The treatment tank is provided with normal exhaust and emergency exhaust, and both consider the biological safety of exhaust and odor removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0077] Figure 1 It is a schematic structural diagram of the animal carcass sterilization and digestion treatment equipment of the present invention;

[0078] Figure 2 It is a schematic structural diagram of the acid solution cleaning and neutralization unit in the animal carcass sterilization and digestion treatment equipment of the present invention;

[0079] Figure 3 It is a schematic structural diagram of the alkali solution preparation and filling unit in the animal carcass sterilization and digestion treatment equipment of the present invention;

[0080] Figure 4 It is a schematic structural diagram of the compressed air unit in the animal carcass sterilization and digestion treatment equipment of the present invention;

[0081] Figure 5 It is a schematic structural diagram of the temperature control unit in the animal carcass sterilization and digestion treatment equipment of the present invention;

[0082] Figure 6 It is a schematic structural diagram of the stirring drive device in the animal carcass sterilization and digestion treatment equipment of the present invention;

[0083] Figure 7 It is a schematic structural diagram of the dryer unit in the animal carcass sterilization and digestion treatment equipment of the present invention;

[0084] Figure 8 It is a schematic structural diagram of the steam condensation unit in the equipment for sterilizing and decomposing animal carcasses according to the present invention;

[0085] Figure 9 It is a schematic structural diagram of the exhaust gas treatment unit in the equipment for sterilizing and decomposing animal carcasses according to the present invention;

[0086] Figure 10 It is a working flow chart of the equipment for sterilizing and decomposing animal carcasses according to the present invention;

[0087] Figure 11 It is a schematic structural diagram of the tap water unit in the equipment for sterilizing and decomposing animal carcasses according to the present invention;

[0088] Figure 12 It is a schematic structural diagram of the compressed air unit in the equipment for sterilizing and decomposing animal carcasses according to the present invention;

[0089] Figure 13 It is a schematic structural diagram of the high-temperature steam unit in the equipment for sterilizing and decomposing animal carcasses according to the present invention;

[0090] Figure 14 It is a schematic structural diagram of the steam condensate unit in the equipment for sterilizing and decomposing animal carcasses according to the present invention;

[0091] Figure 15 It is a schematic structural diagram of the cooling water unit in the equipment for sterilizing and decomposing animal carcasses according to the present invention;

[0092] Figure 16 It is a schematic structural diagram of the cooling water recovery unit in the equipment for sterilizing and decomposing animal carcasses according to the present invention;

[0093] Figure 17 It is a schematic structural diagram of the floor-piercing sealing device of the high-temperature and high-pressure treatment tank in the equipment for sterilizing and decomposing animal carcasses according to the present invention;

[0094] Figure 18 It is a schematic structural diagram of the use state of the floor-piercing sealing device of the high-temperature and high-pressure treatment tank in the equipment for sterilizing and decomposing animal carcasses according to the present invention.

[0095] Explanation of reference numerals: 1, floor slab; 2, floor-piercing sealing device;

[0096] 100, acid solution cleaning and neutralizing unit; 200, alkali solution preparation and filling unit; 300, compressed air unit; 400, temperature control unit; 500, stirring drive device; 600, dryer unit; 700, steam condensation unit; 800, exhaust gas treatment unit;

[0097] 101. Acid liquid tank; 102. First manual ball valve; 103. Acid liquid solenoid valve; 104. First pneumatic diaphragm pump; 105. Second manual ball valve; 106. Acid liquid flow sensor;

[0098] 111. Ninth check valve; 112. Thirty-second manual ball valve; 113. Ninth Y-type filter; 114. Fifteenth pneumatic ball valve; 115. Ninth check valve; 116. Sixteenth pneumatic ball valve; 117. Spray ball;

[0099] 201. Alkaline liquid tank; 202. Alkaline water solenoid valve; 203. Alkaline liquid solenoid valve; 204. Second pneumatic diaphragm pump; 205. Third manual ball valve; 206. Fourth manual ball valve; 207. First check valve; 208. First solenoid valve; 209. Alkaline liquid flow sensor; 210. First pneumatic ball valve; 211. Second check valve; 212. Second pneumatic ball valve;

[0100] 291. Alkaline liquid;

[0101] 301. First pressure reducing valve; 302. Fifth manual ball valve; 303. Third pneumatic ball valve; 304. Third check valve; 305. Fourth pneumatic ball valve;

[0102] 401. Sixth manual ball valve; 402. First Y-type filter; 403. First steam regulating valve; 404. Fifth pneumatic ball valve; 405. First steam solenoid valve; 406. First pressure sensor; 407. Second steam regulating valve; 408. First plate heat exchanger; 409. First gate valve; 410. Second Y-type filter; 411. First steam trap; 412. Fourth check valve; 413. Seventh manual ball valve; 414. Sixth pneumatic ball valve; 415. Second pressure sensor; 416. First temperature sensor; 417. Second plate heat exchanger; 418. Second temperature sensor; 419. First flow switch; 420. Heat transfer oil buffer pipe; 421. Third Y-type filter; 422. First heat transfer oil pump; 423. Third temperature sensor; 424. Seventh pneumatic ball valve; 425. Fifth check valve; 426. Fourth temperature sensor; 428. Eighth pneumatic ball valve; 429. Sixth check valve; 430. Heat transfer oil buffer tank; 431. Third pressure sensor; 432. Liquid level sensor; 433. First safety valve;

[0103] 501. Tenth manual ball valve; 502. First pressure reducing valve; 503. Seventh check valve; 504. Ninth manual ball valve; 505. Second safety valve; 506. Eighth manual ball valve; 507. Fourth pressure sensor; 508. Lubricating oil storage tank; 509. Eleventh manual ball valve; 510. Motor; 511. Through-plate mechanical dynamic seal; 512. Rotation speed detection sensor;

[0104] 601, drying tank; 602, steam heating jacket; 603, drying tank cover; 604, stirring motor; 605, stirring ring; 606, spraying ball; 607, material inlet; 608, fifth pressure sensor; 609, fifth temperature sensor; 610, bottom valve of drying tank; 611, second solenoid valve; 612, third solenoid valve; 613, fourth solenoid valve; 614, twelfth manual ball valve; 615, fourth Y-type filter; 616, fifth solenoid valve; 617, third steam regulating valve; 618, sixth pressure sensor; 619, fourth safety valve; 620, tenth solenoid valve; 621, fifth Y-type filter; 622, second steam trap; 623, eighth check valve; 624, second gate valve; 625, eleventh solenoid valve; 626, second pressure reducing valve; 627, eighth solenoid valve; 628, sixth solenoid valve; 629, seventh solenoid valve; 630, ninth solenoid valve; 631, support; 632, load cell; 635, first multiplexing interface; 636, second multiplexing interface; 690, conveying pipeline; 691, first steam discharge pipeline;

[0105] 701, twelfth solenoid valve; 702, twelfth manual ball valve; 703, sixth Y-type filter; 704, steam condenser; 705, condensate tank; 706, flow equalizing plate; 707, thermal insulation layer; 708, ultra-high liquid level switch; 709, high liquid level switch; 710, low liquid level switch; 711, ultra-low liquid level switch; 712, fifth temperature sensor; 713, thirteenth manual ball valve; 714, fourteenth manual ball valve; 715, filter; 716, circulation pump; 717, fifteenth manual ball valve; 718, heat exchanger; 719, thirty-third manual ball valve; 720, seventh Y-type filter; 721, tenth pneumatic ball valve; 722, seventh temperature sensor; 723, first flow balance valve; 724, eighth temperature sensor; 725, sixteenth manual ball valve; 726, sixth temperature sensor; 727, eleventh pneumatic ball valve; 728, ninth pneumatic ball valve; 729, first regulating valve; 730, thirteenth solenoid valve; 731, water ring pump;

[0106] 781, fourteenth pneumatic ball valve; 782, second regulating valve; 791, second steam discharge pipeline;

[0107] 801, first pneumatic ball valve; 802, rupture disc; 803, pipeline parallel safety valve;

[0108] 810, the twelfth pneumatic ball valve; 811, the seventeenth manual ball valve; 812, the first stage I high-efficiency filter; 813, the first stage II high-efficiency filter; 814, the eighteenth manual ball valve; 815, the first activated carbon filter; 816, the twenty-second manual ball valve; 817, the first drain hose; 818, the twenty-first manual ball valve; 819, the twentieth manual ball valve; 820, the second drain hose; 821, the nineteenth manual ball valve; 822, the third drain hose;

[0109] 830, the third pneumatic ball valve; 831, the twenty-third manual ball valve; 832, the exhaust buffer tank; 833, the exhaust high liquid level switch; 834, the exhaust ultra-high liquid level switch; 836, the thirty-first manual ball valve; 837, the thirtieth manual ball valve; 838, the twenty-ninth manual ball valve; 839, the second stage I high-efficiency filter; 840, the second stage II high-efficiency filter; 841, the twenty-fourth manual ball valve; 842, the second activated carbon filter; 843, the twenty-eighth manual ball valve; 844, the twenty-seventh manual ball valve; 845, the twenty-sixth manual ball valve; 846, the fourth drain hose; 847, the twenty-fifth manual ball valve; 848, the fifth drain hose; 849, the first water receiving tray; 850, the second water receiving tray;

[0110] 891, the normal exhaust interface; 892, the emergency exhaust interface; 893, the first exhaust port; 894, the second exhaust port; 895, the second drain port; 896, the first drain port;

[0111] 901, the tank cover; 902, the hydraulic drive mechanism; 903, the transparent window; 904, the camera; 905, the treatment tank; 906, the insulation layer; 907, the upper expansion joint; 908, the lower expansion joint; 909, the heating jacket; 910, the stirrer; 911, the rear shaft; 912, the drive shaft; 913, the main bottom valve; 914, the ninth temperature sensor; 915, the seventh pressure sensor; 916, the main liquid level switch;

[0112] U10, the tap water unit; U20, the compressed air unit; U30, the high-temperature steam unit; U40, the steam condensate recovery unit; U50, the cooling water unit; U60, the cooling water recovery unit;

[0113] 10, the floor embedded part; 11, the floor slab; 12, the tie bar; 13, the frame body; 14, the upper sealing steel plate; 15, the lower sealing steel plate; 16, the electrical pipeline; 17, the gas or water pipeline. Detailed implementation mode

[0114] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0115] Embodiment 1:

[0116] As Figure 1 shown, this embodiment provides an animal carcass sterilization and digestion treatment device, including a main treatment tank 905, an acid solution cleaning and neutralization unit 100, an alkali solution preparation and filling unit 200, a compressed air unit 300, a temperature control unit 400, a dryer unit 600, a steam condensation unit 700, and an exhaust gas treatment unit 800; the acid solution cleaning and neutralization unit 100 is connected to the top of the main treatment tank 905, the alkali solution preparation and filling unit 200, the compressed air unit 300, and the temperature control unit 400 are all connected to the middle and lower parts of the main treatment tank 905, the dryer unit 600 is connected to the bottom of the main treatment tank 905, and the steam condensation unit 700 and the exhaust gas treatment unit 800 are connected to the upper part of the main treatment tank 905;

[0117] A stirrer 910 is arranged at the lower part inside the main treatment tank 905. One end of the center of the stirrer 910 is connected to the main treatment tank 905 through a rear shaft 911, and the other end is connected to a stirring drive device 500 outside the main treatment tank 905 through a drive shaft 912.

[0118] The tap water unit U10 is divided into two paths. One path is divided into two paths U11 and U12 after passing through a water flow sensor U101. U11 is used for tank body cleaning, and U12 is supplied to the alkali solution preparation and filling unit 200; the other path U13 is supplied to the dryer unit 600.

[0119] The compressed air unit U20 is divided into two paths. One path is divided into two paths U21 and U22 after passing through a manual ball valve U201, a filter U202, and a pressure reducing valve U203. U21 is connected to the acid solution cleaning and neutralization unit 100, and U22 is connected to the alkali solution preparation and filling unit; the other path is divided into three paths U23, U24, and U25 after passing through a manual ball valve U204 and a filter U205. U23 is connected to the compressed air unit of the main treatment tank, U24 is connected to the dryer unit, and U25 is connected to the stirring drive device 500.

[0120] The high-temperature steam unit U30 is divided into two paths U31 and U32. U31 is connected to the temperature control unit of the main treatment tank, and U32 is connected to the dryer unit.

[0121] The steam condensate recovery U40 is collected from two paths U41 and U42. U41 is connected to the temperature control unit of the main treatment tank, and U42 is connected to the dryer unit.

[0122] The cooling water unit U50 is divided into five paths U51, U52, U53, U54 and U55. U51 is connected to the temperature control unit of the main treatment tank, U52 is connected to the dryer unit, and U53, U54 and U55 are connected to the steam condensation unit 700.

[0123] The cooling water recovery is collected from three paths U61, U62 and U63. U61 is connected to the temperature control unit of the main treatment tank, U62 is connected to the dryer unit, and U63 is connected to the steam condensation unit 700.

[0124] The main treatment tank 905 is a pressure vessel, including a spherical tank cover 901 and a tank body, both made of stainless steel. The spherical tank cover 901 is arranged on the top of the tank body. A transparent viewing window 903 is arranged on the spherical tank cover 901, and a camera 904 is arranged outside the transparent viewing window 903 for observing the operation inside the tank. A heating jacket 909 is arranged at the bottom inside the tank. The opening and closing of the tank cover 901 are executed by a hydraulic drive mechanism 902.

[0125] A heating jacket 909 is arranged on the outer side of the bottom of the tank body, and a heat insulation layer 707 is arranged on the outermost side. A main bottom valve 913 is arranged at the bottom of the tank body for discharging the treated product to the dryer unit 600. A ninth temperature sensor 914, a seventh pressure sensor 915 and a main liquid level switch 916 are respectively used to monitor the temperature, pressure and liquid level inside the tank. The main treatment tank 905 is installed across floors and needs to pass through the floor slab 1. A through-floor sealing device 2 is used to achieve gas sealing between the main treatment tank 905 and the floor slab 1. The through-floor sealing device 2 is fully welded to the outer shell of the heat insulation layer 707. On the outer shell of the heat insulation layer 707, an upper expansion joint 907 and a lower expansion joint 908 are respectively arranged at the height positions above and below the floor slab 1 for buffering the thermal expansion and contraction deformation of the outer shell of the heat insulation layer 707.

[0126] The acid cleaning and neutralization unit 100 includes an acid tank 101. A first manual ball valve 102, a first pneumatic diaphragm pump 104, a second manual ball valve 105 and an acid flow sensor 106 are sequentially connected through pipelines on the acid tank 101. The outlet end of the acid flow sensor 106 is respectively connected to the main treatment tank 905 and the dryer unit 600.

[0127] A spray ball 117 is arranged at the top end of the tank cover 901 for spraying tap water or acid into the tank. Tap water U11 flows into the spray ball 117 after passing through a thirty-second manual ball valve 112, a ninth Y-type filter 113, a fifteenth pneumatic ball valve 114, a ninth check valve 111 and a sixteenth pneumatic ball valve 116.

[0128] In the acid cleaning and neutralizing unit 100, the acid liquid in the acid liquid tank 101 is divided into two paths 191 and 192 after passing through the first manual ball valve 102, the first pneumatic diaphragm pump 104, the second manual ball valve 105, and the acid liquid flow sensor 106 under the action of the first pneumatic diaphragm pump 104. Among them, the acid liquid 191 is injected into the spray ball 117 after passing through the ninth check valve 111 and the sixteenth pneumatic ball valve 116; the acid liquid 192 is connected to the dryer unit 600; the compressed air source of the first pneumatic diaphragm pump 104 is supplied by U21 under the control of the acid liquid solenoid valve 103.

[0129] When the acid liquid solenoid valve 103 is opened, the fifteenth pneumatic ball valve 114 is closed, and the sixteenth pneumatic ball valve 116 is opened, the spray ball 117 sprays acid liquid; when the acid liquid solenoid valve 103 is closed, the fifteenth pneumatic ball valve 114 is opened, and the sixteenth pneumatic ball valve 116 is opened, the spray ball 117 sprays tap water.

[0130] The alkali liquid preparation and filling unit 200 includes an alkali liquid tank 201, and a third manual ball valve 205, a second pneumatic diaphragm pump 204, a fourth manual ball valve 206, a first check valve 207, an alkali liquid flow sensor 209, a first pneumatic ball valve 210, a second check valve 211, and a second pneumatic ball valve 212 are sequentially connected through pipelines on the alkali liquid tank 201; the outlet end of the second pneumatic ball valve 212 is communicated with the main treatment tank 905, and a first branch communicating with the dryer unit 600 is arranged between the alkali liquid flow sensor 209 and the first pneumatic ball valve 210.

[0131] One end of the first solenoid valve 208 is communicated between the first check valve 207 and the alkali liquid flow sensor 209, and the other end of the first solenoid valve 208 is communicated with the alkali liquid tank 201.

[0132] The lye preparation and filling unit 200 realizes the preparation and filling of lye. Tap water U12 is controlled by the lye solenoid valve 202 to enter the lye tank 201; the compressed air source of the second pneumatic diaphragm pump 204 is supplied by U22 controlled by the lye solenoid valve 203. When preparing lye, the first solenoid valve 208 is opened and the first pneumatic ball valve 210 is closed. The lye in the lye tank 201 returns to the lye tank 201 through the third manual ball valve 205, the second pneumatic diaphragm pump 204, the fourth manual ball valve 206, the first check valve 207, and the first solenoid valve 208 under the action of the second pneumatic diaphragm pump 204 to make the lye mix evenly. When filling lye, the first solenoid valve 208 is closed and the first pneumatic ball valve 210 is opened. The lye in the lye tank 201 is divided into two paths after passing through the third manual ball valve 205, the second pneumatic diaphragm pump 204, the fourth manual ball valve 206, the first check valve 207, and the lye flow sensor 209 under the action of the second pneumatic diaphragm pump 204. One path of lye 292 is connected to the dryer unit 600, and the other path is connected to the main treatment tank 905 body after passing through the first pneumatic ball valve 210, the second check valve 211, and the second pneumatic ball valve 212. Among them, the operation and stop of the second pneumatic diaphragm pump 204 are controlled by the lye solenoid valve 203.

[0133] The compressed air unit 300 includes a first pressure reducing valve 301, a fifth manual ball valve 302, a third pneumatic ball valve 303, a third check valve 304, and a fourth pneumatic ball valve 305 that are connected in sequence through pipelines, and the outlet end of the fourth pneumatic ball valve 305 is connected to the main treatment tank 905.

[0134] The compressed air unit 300 of the main treatment tank 905 realizes the pressure test and discharging of the main treatment tank 905. Compressed air U23 is connected to the main treatment tank 905 body after passing through the first pressure reducing valve 301, the fifth manual ball valve 302, the third pneumatic ball valve 303, the third check valve 304, and the fourth pneumatic ball valve 305.

[0135] The temperature control unit 400 includes a sixth manual ball valve 401, a first Y-type filter 402, a first steam regulating valve 403, and a fifth pneumatic ball valve that are sequentially arranged between the high-temperature steam unit and the main treatment tank 905;

[0136] A second branch is arranged between the first Y-type filter 402 and the first steam regulating valve 403. One end of the second branch communicates between the first Y-type filter 402 and the first steam regulating valve 403, and the other end communicates with the first interface of the first plate heat exchanger 408; the second branch includes a first steam solenoid valve, a first pressure sensor, and a second steam regulating valve that are sequentially arranged;

[0137] A first gate valve, a second Y-type filter 410, a first steam trap, a fourth check valve, and a seventh manual ball valve are sequentially arranged between the second interface of the first plate heat exchanger 408 and the steam condensation recovery unit;

[0138] The first interface and the second interface of the first plate heat exchanger 408 communicate with each other inside the first plate heat exchanger 408;

[0139] A fifth check valve and a fourth temperature sensor are sequentially arranged between the third interface of the first plate heat exchanger 408 and the main treatment tank 905;

[0140] At the fourth interface of the first plate heat exchanger 408, a seventh pneumatic ball valve, a third temperature sensor, a first heat-conducting oil pump, a third Y-type filter 421, a heat-conducting oil buffer pipe, and a heat-conducting oil buffer tank are sequentially connected in series. An interface is provided on the heat-conducting oil buffer pipe to communicate with the main treatment tank 905;

[0141] A first safety valve, a liquid level sensor, and a third pressure sensor are arranged on the heat-conducting oil buffer tank;

[0142] The seventh pneumatic ball valve and the third temperature sensor are connected to the first interface of the second plate heat exchanger 417 through an eighth pneumatic ball valve;

[0143] The fifth check valve and the fourth temperature sensor are connected to the second interface of the second plate heat exchanger 417 through a sixth check valve;

[0144] The first interface and the second interface of the second plate heat exchanger 417 communicate with each other inside the second plate heat exchanger 417;

[0145] A second temperature sensor and a first flow switch are sequentially arranged between the third interface of the second plate heat exchanger 417 and the cooling water recovery unit;

[0146] A first temperature sensor, a second pressure sensor, and a sixth pneumatic ball valve are sequentially arranged between the fourth interface of the second plate heat exchanger 417 and the cooling water unit;

[0147] The third interface and the fourth interface of the second plate heat exchanger 417 communicate with each other inside the second plate heat exchanger 417.

[0148] The stirring drive device 500 includes a motor 510 which is arranged outside the main processing tank 905. The power output shaft of the motor 510 is connected to the drive shaft 912, and a mechanical dynamic seal mechanism is arranged between the power output shaft of the motor 510 and the outer wall of the main processing tank 905. The mechanical dynamic seal mechanism includes a through-plate mechanical dynamic seal 511 and a lubricating oil storage tank 508 arranged on the power output shaft of the motor 510. The through-plate mechanical dynamic seal 511 and the lubricating oil storage tank 508 are connected by a pipeline, and an eleventh manual ball valve 509 is arranged at the bottom of the lubricating oil storage tank 508. A fourth pressure sensor 507, an eighth manual ball valve 506, a second safety valve 505, a ninth manual ball valve 504, a seventh check valve 503, a first pressure reducing valve 301 and a tenth manual ball valve 501 are arranged between the lubricating oil storage tank 508 and the compressed air unit 300.

[0149] The dryer unit 600 includes a drying tank 601, and a steam heating jacket 602 is arranged outside the drying tank 601. A stirring motor 604 is arranged at the top of the drying tank 601. The power output shaft of the stirring motor 604 penetrates through the drying tank cover 603, and a stirring ring 605 is arranged at the tail end of the power output shaft of the stirring motor 604.

[0150] A spray ball 117 is further arranged in the drying tank 601, and a second solenoid valve 611 is arranged between the spray ball 117 and the tap water unit.

[0151] A third solenoid valve 612 is arranged between the spray ball 117 and the acid cleaning and neutralization unit 100.

[0152] A fourth solenoid valve 613 is arranged between the drying tank cover 603 and the alkali solution preparation and filling unit 200.

[0153] The drying tank cover 603 is communicated with the steam condensation unit 700.

[0154] A seventh solenoid valve 629 and a second pressure reducing valve 626 are arranged between the drying tank cover 603 and the compressed air unit 300.

[0155] The seventh solenoid valve 629 and the second pressure reducing valve 626 are communicated with the steam heating jacket 602 through an eighth solenoid valve 627.

[0156] A sixth solenoid valve 628 is arranged between the steam heating jacket 602 and the cooling water recovery unit.

[0157] A fourth safety valve 619, a sixth pressure sensor 618, a third steam regulating valve 617, a fifth solenoid valve 616, a fourth Y-type filter 615, and a twelfth manual ball valve 614 are provided between the steam heating jacket 602 and the high-temperature steam unit;

[0158] A drying tank bottom valve 610 is provided at the bottom of the drying tank 601;

[0159] A ninth solenoid valve 630 is provided between the bottom of the steam heating jacket 602 and the cooling water recovery unit;

[0160] A tenth solenoid valve 620, a fifth Y-type filter 621, a second steam trap 622, an eighth check valve 623, and a second gate valve 624 are provided between the bottom of the steam heating jacket 602 and the steam condensate unit;

[0161] An eleventh solenoid valve 625 is provided between the bottom of the steam heating jacket 602 and the cooling water unit;

[0162] A material inlet 607 communicating with the main treatment tank 905 is provided on the drying tank 601;

[0163] A fifth pressure sensor 608 and a fifth temperature sensor 609 are provided on the drying tank 601.

[0164] The steam condensation unit 700 includes a condensation tank 705. A heat preservation layer 707 is provided outside the condensation tank 705, and a flow equalizing plate 706 is provided in the upper part of the condensation tank 705;

[0165] An eleventh pneumatic ball valve 727 is provided between the upper part of the condensation tank 705 above the flow equalizing plate 706 and the common drainage pipe;

[0166] The upper part of the condensation tank 705 below the flow equalizing plate 706 communicates with the inlet of a water ring pump 731, and the outlet of the water ring pump 731 communicates with the exhaust port; A thirteenth solenoid valve 730 is provided between the outlet of the water ring pump 731 and the cooling water unit;

[0167] A steam condenser 704 is provided in the middle of the condensation tank 705; A sixth Y-type filter 703, a twelfth manual ball valve 614, a first regulating valve 729, and a ninth pneumatic ball valve 728 are provided between the first interface of the steam condenser 704 and the cooling water unit;

[0168] A twelfth solenoid valve 701 is provided between the second interface of the steam condenser 704 and the dryer unit 600;

[0169] The second interface of the steam condenser 704 communicates with the main treatment tank 905;

[0170] An ultra-high liquid level switch 708, a high liquid level switch 709, a low liquid level switch 710, and an ultra-low liquid level switch 711 are sequentially arranged from top to bottom in the middle and lower part of the condensation tank 705;

[0171] A fifth temperature sensor 609 is arranged at the lower part of the condensation tank 705;

[0172] The lower part of the condensation tank 705 is communicated with the upper part of the condensation tank 705 through an external branch. The external branch includes a fourteenth manual ball valve 714, a filter 715, a circulation pump 716, a fifteenth manual ball valve 717, a heat exchanger 718, and a sixth temperature sensor 726, which are sequentially arranged from bottom to top;

[0173] One end of a thirteenth manual ball valve 713 is communicated between the fourteenth manual ball valve 714 and the condensation tank 705;

[0174] A first flow balance valve 723, a seventh temperature sensor 722, a tenth pneumatic ball valve 721, a seventh Y-type filter 720, and a thirty-third manual ball valve 719 are arranged between the first interface of the heat exchanger 718 and the cooling water unit;

[0175] An eighth temperature sensor 724 and a sixteenth manual ball valve 725 are arranged between the first interface of the heat exchanger 718 and the cooling water recovery unit.

[0176] The temperature control unit 400 of the main treatment tank 905 body realizes the heating and cooling of the tank body.

[0177] When heating, the first steam solenoid valve opens, the first steam regulating valve 403 opens, the seventh pneumatic ball valve opens, the eighth pneumatic ball valve closes, and the sixth pneumatic ball valve closes. The high-temperature steam U31 passes through the sixth manual ball valve 401 and the first Y-type filter 402 and then divides into two paths. One path passes through the first steam regulating valve 403 and the fifth pneumatic ball valve 404 and then injects into the tank to directly heat the tank and its contents; the other path passes through the first steam solenoid valve, the second steam regulating valve 407, the flow channel B of the first plate heat exchanger 408, the first gate valve 409, the second Y-type filter 410, the first steam trap 411, the fourth check valve 412, and the seventh manual ball valve 413 and then returns to the steam condensate recovery U41. A first pressure sensor 406 is provided on the high-temperature steam pipeline to monitor the steam pipeline pressure. Under the action of the first heat-conducting oil pump 422, the heat-conducting oil in the heating jacket of the main treatment tank passes through the heat-conducting oil buffer pipe 420, the third Y-type filter 421, the first heat-conducting oil pump 422, the seventh pneumatic ball valve, the flow channel A of the first plate heat exchanger 408, and the fifth check valve 425 and then returns to the heating jacket 909 of the main treatment tank 905; a third temperature sensor 423 is provided on the pipeline after the first heat-conducting oil pump 422 to monitor the temperature of the heat-conducting oil before heat exchange, and a fourth temperature sensor 426 is provided on the pipeline after the fifth check valve 425 to monitor the temperature of the heat-conducting oil after heat exchange; the steam in the flow channel B of the first plate heat exchanger 408 heats the heat-conducting oil in the flow channel A, thereby heating the tank body of the main treatment tank 905.

[0178] When cooling, the first steam solenoid valve closes, the first steam regulating valve 403 closes, the seventh pneumatic ball valve closes, the eighth pneumatic ball valve opens, and the sixth pneumatic ball valve opens. The cooling water U51 passes through the sixth pneumatic ball valve and the flow channel B of the second plate heat exchanger 417 and then enters the cooling water recovery U61. A second pressure sensor 415 is provided on the cooling water pipeline after the sixth pneumatic ball valve to monitor the supply cooling water pressure, and a first temperature sensor 416 is provided to monitor the supply cooling water temperature. A second temperature sensor 418 is provided on the cooling water recovery pipeline after the second plate heat exchanger 417 to monitor the temperature of the cooling water after heat exchange, and a first flow switch 419 is provided to monitor the flow condition of the cooling water; under the action of the first heat-conducting oil pump 422, the heat-conducting oil in the heating jacket 909 of the main treatment tank 905 passes through the heat-conducting oil buffer pipe 420, the third Y-type filter 421, the first heat-conducting oil pump 422, the eighth pneumatic ball valve, the flow channel A of the second plate heat exchanger 417, and the sixth check valve 429 and then returns to the heating jacket 909 of the main treatment tank 905; the cooling water in the flow channel B of the second plate heat exchanger 417 cools the heat-conducting oil in the flow channel A, thereby cooling the tank body of the main treatment tank 905.

[0179] The other end of the heat-conducting oil buffer pipe 420 is connected to the heat-conducting oil buffer tank 430, which is used to supplement heat-conducting oil when the heat-conducting oil circulation pipeline expands thermally and overflow heat-conducting oil when it contracts; a third pressure sensor 431, a liquid level sensor 432, and a first safety valve 433 are provided on the heat-conducting oil buffer tank.

[0180] The exhaust gas treatment unit 800 includes a normal exhaust part and an emergency exhaust part arranged on the main treatment tank 905; the normal exhaust part includes a first exhaust gas treatment unit, and the emergency exhaust part includes an exhaust buffer tank 832 and a second exhaust gas treatment unit.

[0181] The first exhaust gas treatment unit includes a first pneumatic ball valve 801, a seventeenth manual ball valve 811, a first-stage high-efficiency filter 812, a second-stage high-efficiency filter 813, an eighteenth manual ball valve 814, and an activated carbon filter that are connected in sequence; the inlet of the first pneumatic ball valve 801 is connected to the main treatment tank 905, and the outlet of the activated carbon filter is used for exhausting gas; a twenty-second manual ball valve 816 and a twentieth manual ball valve 819 are respectively arranged at the lower parts of the first-stage high-efficiency filter 812 and the second-stage high-efficiency filter 813, a drain hose is arranged at the top of the first activated carbon filter 815, drain hoses are respectively arranged at the outlet ends of the twenty-second manual ball valve 816 and the twentieth manual ball valve 819, and the drain hoses are connected to a first water receiving tray 849.

[0182] A connection is made between the first pneumatic ball valve 801 and the seventeenth manual ball valve 811 and one end of a first branch, and a twelfth pneumatic ball valve 810 is arranged at the other end of the first branch. The twelfth pneumatic ball valve 810 is used for introducing a disinfectant.

[0183] A twenty-first manual ball valve 818 and a nineteenth manual ball valve 821 are respectively arranged at the upper parts of the first-stage high-efficiency filter 812 and the second-stage high-efficiency filter 813.

[0184] During normal exhaust, the first pneumatic ball valve 801 is opened, and the gas inside the main treatment tank 905 is discharged to the outside through the first pneumatic ball valve 801, the seventeenth manual ball valve 811, the first-stage high-efficiency filter 812, the second-stage high-efficiency filter 813, the eighteenth manual ball valve 814, and the first activated carbon filter 815 under the action of the internal pressure. Among them, the first-stage high-efficiency filter 812 and the second-stage high-efficiency filter 813 are used to intercept pathogenic microorganisms, and the first activated carbon filter 815 is used to remove odors.

[0185] The twenty-second manual ball valve 816 and the twenty-first manual ball valve 818 on the first-stage high-efficiency filter 812 are used for in-situ leak detection of the first-stage high-efficiency filter 812.

[0186] The twentieth manual ball valve 819 and the nineteenth manual ball valve 821 on the second-stage high-efficiency filter 840 are used for in-situ leak detection of the first-stage high-efficiency filter 813.

[0187] The first drain hose 817, the second drain hose 820, and the third drain hose 822 respectively guide the water at the outlet ends of the twenty-second manual ball valve 816, the twentieth manual ball valve 819, and the first activated carbon filter 815 to the first water receiving tray 849, and the water in the first water receiving tray 849 is discharged from the system through the first drain port 896.

[0188] An inlet pipe is provided on the exhaust buffer tank 832. One end of the inlet pipe is communicated with the main treatment tank 905, and the other end is communicated with the exhaust buffer tank 832. A rupture disc 802, a pipeline parallel safety valve 803, and a twenty-third manual ball valve 831 are sequentially arranged on the inlet pipe. A thirty-first manual ball valve 836 is provided at the bottom of the exhaust buffer tank 832, and the exhaust buffer tank 832 is communicated with the second exhaust treatment unit.

[0189] The second exhaust treatment unit includes a twenty-ninth manual ball valve 838, a second primary high-efficiency filter 839, a second secondary high-efficiency filter 840, a twenty-fourth manual ball valve 841, and a second activated carbon filter 842 that are sequentially communicated; the inlet of the twenty-ninth manual ball valve 838 is communicated with the exhaust buffer tank 832, and the outlet of the second activated carbon filter 842 is used for exhausting; a twenty-eighth manual ball valve 843 and a twenty-sixth manual ball valve 845 are respectively arranged at the lower parts of the second primary high-efficiency filter 839 and the second secondary high-efficiency filter 840. A drain hose is provided at the top of the second activated carbon filter 842, and a drain hose is respectively provided at the outlet ends of the twenty-eighth manual ball valve 843 and the twenty-sixth manual ball valve 845, and the drain hoses are communicated with a second water receiving tray 850. Among them, the second primary high-efficiency filter 839 and the second secondary high-efficiency filter 840 are used to intercept pathogenic microorganisms, and the second activated carbon filter 842 is used to remove odors.

[0190] A twenty-seventh manual ball valve 844 and a twenty-fifth manual ball valve 847 are respectively arranged at the upper parts of the second primary high-efficiency filter 839 and the second secondary high-efficiency filter 840.

[0191] A connection is made between the pipeline parallel safety valve 803 and the twenty-third manual ball valve 831 and one end of a second branch. A third pneumatic ball valve 830 is provided at the other end of the second branch. The third pneumatic ball valve 830 is used to access disinfectant.

[0192] An exhaust high liquid level switch 833 and an exhaust ultra-high liquid level switch 834 are provided on the exhaust buffer tank 832.

[0193] After the exhaust high liquid level switch 833 indicates the liquid level, manually operate the thirty-first manual ball valve 836 to drain the water from the exhaust buffer tank 832. When the exhaust ultra-high liquid level switch 834 alarms, the system prohibits starting and running. It is necessary to drain the water in the exhaust buffer tank 832 until the signal of the exhaust ultra-high liquid level switch 834 disappears before starting, and it is preferably to start only when the signal of the exhaust high liquid level switch 833 also disappears.

[0194] When the pressure in the main treatment tank 905 is abnormal and higher than the bursting pressure of the bursting disc 802, emergency exhaust is required. At this time, the high pressure in the main treatment tank 905 breaks through the bursting disc 802 and enters the exhaust buffer tank 832. The exhaust buffer tank 832 is used to prevent excessive pressure and flow from impacting and damaging the first-stage high-efficiency filter 839 and the second-stage high-efficiency filter 840. After the pressure and flow are reduced by the exhaust buffer tank 832, the gas flows through the twenty-ninth manual ball valve 838, the first-stage high-efficiency filter 839, the second-stage high-efficiency filter 840, the twenty-fourth manual ball valve 841, and the second activated carbon filter 842 in sequence and is discharged to the outside through the second exhaust port 894.

[0195] The pipeline parallel safety valve 803 is used for abnormal high-pressure treatment.

[0196] The twenty-eighth manual ball valve 843 and the twenty-seventh manual ball valve 844 on the first-stage high-efficiency filter 839 are used for in-situ leak detection of the first-stage high-efficiency filter 839.

[0197] The twenty-sixth manual ball valve 845 and the twenty-fifth manual ball valve 847 on the second-stage high-efficiency filter 840 are used for in-situ leak detection of the second-stage high-efficiency filter 840.

[0198] The fourth drain hose 846 and the fifth drain hose 848 respectively guide the water at the outlet ends of the twenty-sixth manual ball valve 845 and the second activated carbon filter 842 to the second water receiving tray 850, and the water in the second water receiving tray 850 is discharged from the system through the second drain port 895.

[0199] The thirtieth manual ball valve 837 is used to add disinfectant into the exhaust buffer tank 832.

[0200] The treatment process of the animal carcass sterilization and digestion treatment equipment in this embodiment includes 7 stages: preparation for operation, airtightness test, alkali solution filling, heating and temperature rise, disinfection and dissolution, post-disinfection treatment, and treatment in the dryer.

[0201] 1. Preparation for operation. The alkali solution is prepared in the alkali solution preparation and filling unit 200; the weighed animal carcass is loaded into the main treatment tank 905. The weighing method can choose the method of installing an electronic hook scale on the overhead crane, and the weight of the loaded animal carcass is input into the control system through the equipment human-machine interface; close the tank cover 901 of the main treatment tank 905 and lock it.

[0202] 2. Air tightness test. Conduct an air tightness test on the main treatment tank 905 to ensure the safety of subsequent operation processes. The third pneumatic ball valve 303 and the fourth pneumatic ball valve 305 are opened, and compressed air U23 is injected into the main treatment tank 905. When the pressure value feedback by the seventh pressure sensor 915 reaches the initial value of the air tightness test set by the control system, the third pneumatic ball valve 303 and the fourth pneumatic ball valve 305 are closed, and the injection of compressed air is stopped; within the air tightness test time set by the control system, continuously detect the pressure value feedback by the seventh pressure sensor 915; if the pressure value decays to the termination pressure value of the air tightness test set by the control system within the test time, it is judged that the air tightness test fails, and the control system issues an alarm and returns to the ready-to-run stage; if the pressure value is still greater than the termination pressure value of the air tightness test set by the control system after the test time ends, it is judged that the air tightness test passes; after the test time ends, the control system controls the opening of the first pneumatic ball valve 801, and the main treatment tank 905 is exhausted and depressurized through the normal exhaust component of the exhaust treatment unit 800 until the pressure value feedback by the seventh pressure sensor 915 returns to normal pressure.

[0203] 3. Alkaline solution filling. The control system calculates the amount of alkaline solution to be filled according to the weight of the animal carcass input in the ready-to-run stage and the internal set ratio of the control system; the first pneumatic ball valve 210 and the second pneumatic ball valve 212 are opened, and the second pneumatic diaphragm pump 204 operates (alkaline solution solenoid valve 203) to fill the alkaline solution into the main treatment tank 905. The control system measures the amount of alkaline solution filled through the feedback value of the alkaline solution flow sensor 209 until the amount of alkaline solution filled reaches the calculated value, then stops the second pneumatic diaphragm pump 204, and closes the first pneumatic ball valve 210 and the second pneumatic ball valve 212.

[0204] 4. Heating and temperature rising. The control system heats according to the heating program of the temperature control unit 400, including high-temperature steam 490 until it is injected into the tank to heat the tank and its contents, heats the heat-conducting oil in the heating jacket through the first plate heat exchanger 408, and then heats the main treatment tank body. When the feedback value of the ninth temperature sensor reaches the temperature rising target value set by the control system, close the fifth pneumatic ball valve 404; during this process, the control system continuously detects the pressure value feedback by the seventh pressure sensor. If it is greater than the exhaust threshold, the control system controls the opening of the first pneumatic ball valve 801, and the main treatment tank body is exhausted and depressurized through the normal exhaust component of the exhaust treatment unit until the pressure value feedback by the seventh pressure sensor is reduced to a certain proportion of the exhaust threshold.

[0205] 5. Disinfection and Dissolution. During this process, the control system automatically adjusts the opening degree of the second steam regulating valve 407 according to the feedback value of the ninth temperature sensor, thereby adjusting the heating amount of the heat-conducting oil in the heating jacket and controlling the temperature in the main treatment tank body to be stable at the heating target value; the control system controls the stirring drive device 500 to drive the stirrer 910 to stir. The stirring process is divided into 4 stirring speeds, namely slow trial, slow speed, medium speed, and fast speed, according to the disinfection and dissolution time process. In the initial stage, it intermittently stirs at a slow speed for a set time, then continuously stirs at a slow speed for a set time, then continuously stirs at a medium speed for a set time, and finally continuously stirs at a fast speed for a set time; until the cumulative time reaches the disinfection and dissolution set time set by the control system, this stage is completed.

[0206] 6. Post-treatment after disinfection. This stage includes 4 steps: cooling and depressurization, discharging, and cleaning. In the cooling and depressurization step: the control system controls the stirring drive device 500 to drive the stirrer 910 to stir at a medium speed, and cools the main treatment tank according to the cooling program of the temperature control unit; the control system detects the pressure value fed back by the seventh pressure sensor. When the pressure value is less than the cooling and depressurization set value, the fourteenth pneumatic ball valve 781 opens to release the remaining pressure in the main treatment tank, and at the same time the steam condensation unit 700 works; when the pressure value fed back by the seventh pressure sensor is less than the discharging pressure set value, it enters the discharging step. In the discharging step: the main bottom valve opens, the third pneumatic ball valve and the fourth pneumatic ball valve open, and the materials in the main treatment tank are discharged into the dryer unit through the main bottom valve under the action of compressed air U23. The user can observe the discharging situation in the main treatment tank through the camera 904. After discharging, it enters the cleaning step. In the cleaning step: the acid cleaning and neutralization unit works. First, pickling is carried out on the inside of the main treatment tank through the spray ball 117, and then water washing is carried out on the inside of the main treatment tank through the spray ball 117; then the discharging program is repeated to discharge the materials generated by pickling and water washing into the dryer unit; the stirrer 910 stops working.

[0207] 7. The treatment process in the main treatment tank ends, and the next batch of treatment processes can start. At the same time, the dryer unit starts to work.

[0208] 8. In-dryer processing. It includes three steps: heating and drying, cooling, and discharging. In the heating and drying step: First, the control system obtains the weight of the material to be processed in the drying tank 601 through the weighing sensor 632; the dryer unit starts the heating program until the fifth temperature sensor 609 reaches the drying temperature value set by the control system. At the same time, the stirring motor 604 drives the stirring ring 605 to stir the material to be processed in the drying tank 601 and reverses the stirring at regular intervals. The steam condensation unit 700 operates to capture the evaporated water vapor. The weighing sensor 632 continuously detects the weight change. When the weight decreases to the drying weight reduction ratio value set by the control system, the heating and drying stops. In the cooling step, the dryer unit starts the cooling program until the fifth temperature sensor 609 reaches the discharge temperature value of the dryer set by the control system. In the discharging step, under the action of compressed air U24, the material in the drying tank 601 is discharged outwards through the bottom valve of the drying tank. Thus, the whole process of sterilization and digestion treatment of animal carcasses is completed.

[0209] This embodiment provides a high-temperature and high-pressure treatment tank floor-piercing sealing device, which includes a floor embedded part 10 and a sealing plate; an installation hole is preset on the floor slab 11, the floor embedded part 10 is arranged on the side wall of the installation hole, and the sealing plate is arranged between the floor embedded part 10 and the outer wall of the treatment tank 905.

[0210] The floor embedded part 10 includes a frame body 13 and a plurality of tension bars 12. The frame body 13 is a rectangular frame formed by splicing and welding C-shaped steels, and the opening side of the C-shaped steel faces the floor slab 11; one end of the tension bar 12 is welded to the frame body 13, and the other end is provided with a hook. The frame body 13 and the plurality of tension bars 12 are fixed and sealed with the floor slab 11 by grouting.

[0211] After the treatment tank 905 is installed in place, an upper sealing steel plate 14 and a lower sealing steel plate 15 are respectively welded on the upper and lower sides of the frame body 13. The upper sealing steel plate 14 and the lower sealing steel plate 15 are continuously welded and fixed and sealed with the upper and lower surfaces of the frame body 13, and are continuously welded and fixed and sealed with the expansion joint outside the heat preservation layer 906 of the treatment tank 905.

[0212] The sealing plate is penetrated with an electrical pipeline 16 and a gas or water pipeline 17 to meet the connection of electricity, gas, and water between the upper and lower floors during the process of process treatment.

[0213] In the high-temperature and high-pressure treatment tank floor-piercing sealing device in this embodiment, all joints are fixed and sealed by continuous welding, which can not only ensure the connection strength but also ensure the sealing effect of the joints, avoiding the risk of sealing failure and leakage caused by thermal expansion and contraction and floating deformation in the long term.

[0214] It should be noted that for those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0215] In this specification, specific examples are used to illustrate the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An animal carcass sterilization and digestion processing device, characterized in that, It includes a main treatment tank, an acid cleaning and neutralizing unit, an alkali preparation and filling unit, a compressed air unit, a temperature control unit, a dryer unit, a steam condensation unit and an exhaust gas treatment unit; the acid cleaning and neutralizing unit is connected to the top of the main treatment tank, the alkali preparation and filling unit, the compressed air unit and the temperature control unit are all connected to the middle and lower parts of the main treatment tank, the dryer unit is connected to the bottom of the main treatment tank, and the steam condensation unit and the exhaust gas treatment unit are connected to the upper part of the main treatment tank; A stirrer is arranged at the lower part inside the main treatment tank. One end of the center of the stirrer is connected to the main treatment tank through a rear shaft, and the other end is connected to a stirring drive device outside the main treatment tank through a drive shaft. The main treatment tank includes a spherical tank cover and a tank body. The spherical tank cover is arranged at the top of the tank body. A transparent viewing window is arranged on the spherical tank cover, and a camera is arranged outside the transparent viewing window. A heating jacket is arranged at the bottom inside the tank body. The stirring drive device includes a motor. The motor is arranged outside the main treatment tank, and the power output shaft of the motor is connected to the drive shaft; The acid cleaning and neutralizing unit includes an acid tank. A first manual ball valve, a first pneumatic diaphragm pump, a second manual ball valve and an acid flow sensor are sequentially connected through pipelines on the acid tank. The outlet end of the acid flow sensor is respectively connected to the main treatment tank and the dryer unit; The alkali preparation and filling unit includes an alkali tank. A third manual ball valve, a second pneumatic diaphragm pump, a fourth manual ball valve, a first check valve, an alkali flow sensor, a first pneumatic ball valve, a second check valve and a second pneumatic ball valve are sequentially connected through pipelines on the alkali tank. The outlet end of the second pneumatic ball valve is connected to the main treatment tank. A first branch connecting the dryer unit is arranged between the alkali flow sensor and the first pneumatic ball valve; The compressed air unit includes a first pressure reducing valve, a fifth manual ball valve, a third pneumatic ball valve, a third check valve and a fourth pneumatic ball valve sequentially connected through pipelines. The outlet end of the fourth pneumatic ball valve is connected to the main treatment tank; The treatment process of the animal carcass sterilization and digestion treatment equipment includes 7 stages: preparation for operation, airtightness test, alkali filling, heating up, disinfection and dissolution, post-disinfection treatment, and treatment inside the dryer; In the preparation for operation stage, the alkali is prepared in the alkali preparation and filling unit. The weighed animal carcass is loaded into the main treatment tank. The weighing method can choose the method of installing an electronic hook scale on the overhead crane. The weight of the loaded animal carcass is input into the control system through the equipment human-machine interface. The spherical tank cover of the main treatment tank is closed and locked; In the airtightness test stage, the airtightness of the main treatment tank is tested; In the alkali filling stage, the control system calculates the amount of alkali to be filled according to the weight of the animal carcass input in the preparation for operation stage and the internal set ratio of the control system, fills the alkali into the main treatment tank, and the control system measures the amount of alkali filled through the feedback value of the alkali flow sensor; In the heating and temperature-rising stage, the control system heats according to the heating program of the temperature control unit, including high-temperature steam until it is injected into the tank to heat the tank and its contents, and heats the heat-conducting oil in the heating jacket through the first plate heat exchanger to further heat the tank of the main treatment tank; In the disinfection and dissolution stage, the control system automatically adjusts the opening degree of the second steam regulating valve according to the feedback value of the ninth temperature sensor, and then adjusts the heating amount of the heat-conducting oil in the heating jacket to control the temperature in the tank of the main treatment tank to be stable at the temperature-rising target value. The control system controls the stirring drive device to drive the stirrer to stir; In the post-disinfection treatment stage, it includes 4 steps: cooling and depressurizing, discharging, and cleaning; In the in-dryer treatment stage, it includes 3 steps: heating and drying, cooling, and discharging.

2. The animal carcass sterilization and digestion treatment equipment according to claim 1, characterized in that, Between the first check valve and the lye flow sensor is connected to one end of the first solenoid valve, and the other end of the first solenoid valve is connected to the lye tank.

3. The animal carcass sterilization and digestion treatment equipment according to claim 1, characterized in that, The temperature control unit includes a sixth manual ball valve, a first Y-type filter, a first steam regulating valve, and a fifth pneumatic ball valve that are sequentially arranged between the high-temperature steam unit and the main treatment tank; A second branch is arranged between the first Y-type filter and the first steam regulating valve. One end of the second branch is connected between the first Y-type filter and the first steam regulating valve, and the other end is connected to the first interface of the first plate heat exchanger; the second branch includes a first steam solenoid valve, a first pressure sensor, and the second steam regulating valve that are sequentially arranged; Between the second interface of the first plate heat exchanger and the steam condensation recovery unit, a first gate valve, a second Y-type filter, a first steam trap, a fourth check valve, and a seventh manual ball valve are sequentially arranged; The first interface and the second interface of the first plate heat exchanger are connected inside the first plate heat exchanger; Between the third interface of the first plate heat exchanger and the main treatment tank, a fifth check valve and a fourth temperature sensor are sequentially arranged; at the fourth interface of the first plate heat exchanger, a seventh pneumatic ball valve, a third temperature sensor, a first heat-conducting oil pump, a third Y-type filter, a heat-conducting oil buffer pipe, and a heat-conducting oil buffer tank are sequentially connected. An interface is arranged on the heat-conducting oil buffer pipe to be connected to the main treatment tank; The heat-conducting oil buffer tank is provided with a first safety valve, a liquid level sensor, and a third pressure sensor; Between the seventh pneumatic ball valve and the third temperature sensor, it is connected to the first interface of the second plate heat exchanger through an eighth pneumatic ball valve; Between the fifth check valve and the fourth temperature sensor, it is connected to the second interface of the second plate heat exchanger through a sixth check valve; The first interface and the second interface of the second plate heat exchanger are connected inside the second plate heat exchanger; Between the third interface of the second plate heat exchanger and the cooling water recovery unit, a second temperature sensor and a first flow switch are sequentially arranged; Between the fourth interface of the second plate heat exchanger and the cooling water unit, a first temperature sensor, a second pressure sensor, and a sixth pneumatic ball valve are sequentially arranged; The third interface and the fourth interface of the second plate heat exchanger are internally connected within the second plate heat exchanger.

4. The animal carcass sterilization and digestion treatment equipment according to claim 1, characterized in that, A mechanical dynamic seal mechanism is provided between the power output shaft of the motor and the outer wall of the main treatment tank; the mechanical dynamic seal mechanism includes a through-plate mechanical dynamic seal and a lubricating oil storage tank provided on the power output shaft of the motor; the through-plate mechanical dynamic seal and the lubricating oil storage tank are connected by a pipeline, and an eleventh manual ball valve is provided at the bottom of the lubricating oil storage tank; a fourth pressure sensor, an eighth manual ball valve, a second safety valve, a ninth manual ball valve, a seventh check valve, a first pressure reducing valve, and a tenth manual ball valve are provided between the lubricating oil storage tank and the compressed air unit.

5. The animal carcass sterilization and digestion treatment equipment according to claim 1, characterized in that, The dryer unit includes a drying tank, and a steam heating jacket is provided outside the drying tank; a stirring motor is provided at the top of the drying tank, the power output shaft of the stirring motor penetrates the drying tank cover, and a stirring ring is provided at the tail end of the power output shaft of the stirring motor. A spray ball is further provided in the drying tank, and a second solenoid valve is provided between the spray ball and the tap water unit. A third solenoid valve is provided between the spray ball and the acid cleaning and neutralization unit. A fourth solenoid valve is provided between the drying tank cover and the alkali solution preparation and filling unit. The drying tank cover is communicated with the steam condensation unit. A seventh solenoid valve and a second pressure reducing valve are provided between the drying tank cover and the compressed air unit. The seventh solenoid valve and the second pressure reducing valve are communicated with the steam heating jacket through an eighth solenoid valve. A sixth solenoid valve is provided between the steam heating jacket and the cooling water recovery unit. A fourth safety valve, a sixth pressure sensor, a third steam regulating valve, a fifth solenoid valve, a fourth Y-type filter, and a twelfth manual ball valve are provided between the steam heating jacket and the high-temperature steam unit. A drying tank bottom valve is provided at the bottom of the drying tank. A ninth solenoid valve is provided between the bottom of the steam heating jacket and the cooling water recovery unit. A tenth solenoid valve, a fifth Y-type filter, a second steam trap, an eighth check valve, and a second gate valve are provided between the bottom of the steam heating jacket and the steam condensate unit. An eleventh solenoid valve is provided between the bottom of the steam heating jacket and the cooling water unit. A material inlet communicating with the main treatment tank is provided on the drying tank. A fifth pressure sensor and a fifth temperature sensor are provided on the drying tank.

6. The animal carcass sterilization and digestion treatment equipment according to claim 1, characterized in that, The steam condensation unit includes a condensation tank, a heat insulation layer is provided outside the condensation tank, and a flow equalizing plate is provided in the upper part of the condensation tank. An eleventh pneumatic ball valve is provided between the upper part of the condensation tank above the flow equalizing plate and the common drainage pipeline. The lower part of the upper part of the condensation tank inside is communicated with the inlet of a water ring pump, and the outlet of the water ring pump is communicated with the exhaust port; a thirteenth solenoid valve is provided between the outlet of the water ring pump and the cooling water unit. A steam condenser is provided in the middle of the condensation tank; a sixth Y-type filter, a twelfth manual ball valve, a first regulating valve, and a ninth pneumatic ball valve are provided between the first interface of the steam condenser and the cooling water unit. A twelfth solenoid valve is provided between the second interface of the steam condenser and the dryer unit; The second interface of the steam condenser communicates with the main processing tank; An ultra-high liquid level switch, a high liquid level switch, a low liquid level switch, and an ultra-low liquid level switch are sequentially arranged from top to bottom in the middle and lower part of the condensation tank; A fifth temperature sensor is arranged at the lower part of the condensation tank; The lower part of the condensation tank communicates with the upper part of the condensation tank through an external branch, and the external branch includes a fourteenth manual ball valve, a filter, a circulation pump, a fifteenth manual ball valve, a heat exchanger, and a sixth temperature sensor arranged in sequence from bottom to top; The fourteenth manual ball valve communicates with one end of a thirteenth manual ball valve between it and the condensation tank; A first flow balance valve, a seventh temperature sensor, a tenth pneumatic ball valve, a seventh Y-type filter, and a thirty-third manual ball valve are arranged between the first interface of the heat exchanger and the cooling water unit; An eighth temperature sensor and a sixteenth manual ball valve are arranged between the first interface of the heat exchanger and the cooling water recovery unit.

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