Feed and liquid additive mixing method

Abstract

The invention provides a feed and liquid additive mixing method, which comprises the following steps: S10: obtaining target adding information of feed and liquid additive mixing, the target adding information comprising a formula number and types and dosages of all liquid additives in a mixed formula corresponding to the formula number; s20, according to the adding target information, a plurality of weighing tanks provided with first weighing sensors are controlled, the liquid additives in the mixed formula are weighed based on a weight reduction method, the types of the liquid additives weighed by the weighing tanks are different, and all the weighed liquid additives are conveyed into a fluid mixing machine; s30, treating the required liquid additive in a fluid mixer to obtain a homogenized liquid; s40, conveying the homogenized liquid to a buffer metering tank provided with a second weighing sensor, weighing the homogenized liquid through the buffer metering tank based on a weight reduction method, and conveying the weighed homogenized liquid to a mixing machine; and S50, uniformly mixing the weighed homogenized liquid with feed raw materials in the mixing machine to obtain a feed product. According to the method provided by the invention, the batching efficiency and precision can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of feed and liquid additive mixing, and particularly to a method for mixing feed and liquid additives. Background Art

[0002] Feed additives refer to small or trace substances added in feed production, which have significant effects on enhancing the nutritional value of feed, improving animal production performance and health, etc.

[0003] Feed additives can be classified into solid additives and liquid additives in terms of form. Liquid additives have the following advantages in use. First, convenient and fast: Liquid additives can be quickly transported through pumps and pipelines, and accurately metered and automatically added with the help of liquid addition equipment, without manual weighing and feeding, saving the production cost of feed mills. Second, high safety: Solid additives will inevitably raise dust during the feeding process. While liquid additives not only do not generate dust, but also reduce the risk of dust explosion by adsorbing dust after being added to the mixer. Therefore, the current market penetration rate of liquid additives is rapidly increasing, and many feed mills are simultaneously using two or more liquid additives to add to feed, such as hydroxy methionine, liquid lysine, mold and water retention agent, lecithin, acidifier, etc.

[0004] When multiple liquid additives are added and applied in feed mills, the following problems will occur: Setting multiple sets of liquid addition equipment results in poor integration, and the operation logics and operating systems of their respective liquid addition equipment cannot be centrally and uniformly managed, the control logic is complex, and the error probability is relatively high. Low addition accuracy: Many liquid additives (such as lecithin, hydroxy methionine, etc.) have high viscosities, which will cause wall hanging in the tanks of liquid addition equipment, forming residues and affecting the addition accuracy.

[0005] Therefore, there is an urgent need for a method for mixing feed and liquid additives that can be efficient and have high addition accuracy. Summary of the Invention

[0006] A method for mixing feed and liquid additives, characterized by comprising:

[0007] S10: Obtain the target addition information for mixing feed and liquid additives, where the target addition information includes the formula number and all types of liquid additives and the dosages of each liquid additive in the mixing formula corresponding to the formula number;

[0008] S20: Control a plurality of weighing tanks each provided with a first weighing sensor to weigh the liquid additives in the mixing formula based on the weight loss method, each weighing tank weighs different types of liquid additives, and send all the weighed liquid additives to a fluid mixer;

[0009] S30: Mix all the liquid additives required for emulsification in a fluid mixer to obtain a homogeneous liquid;

[0010] S40: Transport the homogeneous liquid to a buffer metering tank equipped with a second weighing sensor. After being weighed by the buffer metering tank based on the weight-loss method, the homogeneous liquid is transported to the mixer;

[0011] S50: Mix the weighed homogeneous liquid with feed raw materials evenly in the mixer to obtain a feed product.

[0012] In some alternative embodiments of the present application, in step S20:

[0013] The liquid additives weighed by the weighing tank are all non-pure water liquid additives;

[0014] In the direction of gravity, the fluid mixer is below each weighing tank, and all the liquid additives weighed by each weighing tank are sent to the fluid mixer under the action of gravity.

[0015] In some alternative embodiments of the present application, when the liquid additives in the mixing formula contain water, it further includes step S21:

[0016] Transport the water in the mixing formula to the fluid mixer through a water inlet pipeline to be mixed with the liquid additives transported from each weighing tank to the fluid mixer. The water inlet pipeline is connected to the fluid mixer.

[0017] In some alternative embodiments of the present application, the water inlet end of the water inlet pipeline is connected to a liquid storage tank for storing water, and the amount of water added from the liquid storage tank to the fluid mixer is measured by a first flow meter provided on the water inlet pipeline.

[0018] In some alternative embodiments of the present application, the water inlet pipeline is connected to the top of the fluid mixer, the outflow end of the water inlet pipeline extends into the fluid mixer, a cleaning ball rotatably connected to the water inlet pipeline is provided at the outflow end of the water inlet pipeline, the cleaning ball is formed with a water outlet, when the addition batch ends or the liquid formula needs to be changed, after controlling the fluid mixer to empty the liquid, external water source flows into the fluid mixer from the water outlet of the cleaning ball through the water inlet pipeline and the cleaning ball can rotate relative to the water inlet pipeline under the action of water pressure to clean the inside of the fluid mixer;

[0019] When the liquid additives in the mixing formula contain grease, it further includes step S21':

[0020] Transport the grease in the mixing formula to the fluid mixer through an oil inlet pipeline to be mixed with the liquid additives transported from each weighing tank to the fluid mixer. The oil inlet pipeline is connected to the fluid mixer;

[0021] In some alternative embodiments of the present application, the amount of grease added from the grease storage tank to the fluid mixer is measured by a second flow meter provided on the oil inlet pipeline. The grease inflow end of the oil inlet pipeline is connected to the grease storage tank for storing grease;

[0022] In some alternative embodiments of the present application, the oil inlet pipeline is connected to the top of the fluid mixer, and the outflow end of the oil inlet pipeline extends into the fluid mixer.

[0023] In some alternative embodiments of the present application, step S30 further includes:

[0024] Step S31: Obtain the current mixing uniformity of the liquid in the fluid mixer through the current liquid parameters detected by the first liquid sensor and / or the second liquid sensor provided inside the fluid mixer. The first liquid sensor is arranged on the upper part of the inner side wall of the fluid mixer and is used to detect the first liquid parameter. The second liquid sensor is arranged at the inner bottom of the fluid mixer and is used to detect the second liquid parameter. The first liquid parameter and the second liquid parameter are of the same type.

[0025] In some alternative embodiments of the present application, if the current mixing uniformity is within the preset mixing uniformity range, then step S40 is executed.

[0026] In some alternative embodiments of the present application, in step S40, a pneumatic diaphragm pump is used to transport the homogenized liquid into the buffer metering tank.

[0027] In some alternative embodiments of the present application, step S40 further includes:

[0028] Step S41: The fluid mixer and the buffer metering tank are connected through a first pipeline system. The first pipeline system includes a photoelectric sensor arranged at the outflow end of the fluid mixer. When the photoelectric sensor detects that there is no homogenized liquid flowing out of the outflow end of the fluid mixer, it emits an emptying signal.

[0029] In some alternative embodiments of the present application, in step S40, a pneumatic diaphragm pump is used to transport the homogenized liquid into the buffer metering tank.

[0030] In some alternative embodiments of the present application, the target addition information in step S10 further includes a preset batch quantity and the addition quantity of the homogenized liquid per batch,

[0031] Step S40 further includes:

[0032] Step S42: After obtaining the emptying signal, determine whether the amount of the homogenized liquid in the buffer metering tank is greater than or equal to the addition quantity of the homogenized liquid per batch.

[0033] If not, then return to step S20 to determine whether the liquid amount in the weighing tank is within the preset range.

[0034] If so, the weighing tank conveys the liquid additive to the fluid mixer.

[0035] If not, the daily-use storage tank for storing the liquid additive conveys the liquid additive to the weighing tank.

[0036] If so, execute step S43: continue to determine whether the liquid addition information of the mixer is received.

[0037] If so, weigh the homogenized liquid in the buffer metering tank based on the weight-loss method and convey it to the mixer.

[0038] If not, continue to wait for the liquid addition information of the mixer to be sent.

[0039] In some alternative embodiments of the present application, in step S40, a variable-frequency pump is used to convey the homogenized liquid in the buffer metering tank into the mixer.

[0040] In some alternative embodiments of the present application, in step S40, the variable-frequency pump is controlled to adjust the conveying flow rate of the homogenized liquid, and the homogenized liquid weighed by the buffer metering tank is conveyed into the mixer within a preset time period of 30 s to 50 s.

[0041] In some alternative embodiments of the present application, the preset time period is 30 s, 35 s, 40 s, 45 s or 50 s.

[0042] In some alternative embodiments of the present application, the buffer metering tank and the mixer are connected through a second pipeline system. The second pipeline system includes a plurality of nozzles arranged in the mixer and the homogenized liquid is ejected through the nozzles. Step S40 further includes:

[0043] Step S44: During the process of conveying the homogenized liquid to the mixer, detect the pipeline pressure of the second pipeline system.

[0044] If the pipeline pressure is between 0.2 Mpa and 0.4 Mpa, maintain the current number of open nozzles and the operating frequency of the variable-frequency pump.

[0045] If the pipeline pressure exceeds the numerical range of 0.2 Mpa to 0.4 Mpa, adjust the current number of open nozzles and the operating frequency of the variable-frequency pump.

[0046] In some alternative embodiments of the present application, step S40 includes:

[0047] Step S45: During the process of conveying the homogenized liquid to the mixer, detect whether the liquid weight loss in the buffer metering tank is within the set added liquid volume range.

[0048] If so, stop the operation of the variable-frequency pump to stop adding the homogenized liquid to the mixer.

[0049] If not, continue to maintain the operation of the variable-frequency pump to convey the homogenized liquid into the mixer.

[0050] In some alternative embodiments of the present application, a moisture sensor is provided in the mixer to detect the moisture value of the feed product.

[0051] Step S50 includes:

[0052] S51: After mixing is completed, detect the moisture value of the feed product.

[0053] If the detected moisture value reaches the preset value, the single-batch mixing ends.

[0054] If the detected moisture value does not reach the preset value, adjust the water or water-containing liquid in the mixing formula in step S20 to adjust the moisture value of the next single-batch feed product.

[0055] In some alternative embodiments of the present application, step S50 further includes:

[0056] Step S52: After the preparation of the current feed product is completed, determine whether the current completed batch quantity has reached the preset batch quantity.

[0057] If so, the batch addition ends.

[0058] If not, continue to return to step S42.

[0059] In some alternative embodiments of the present application, the daily-use storage tank for storing liquid additives is formed with a plurality of independent liquid storage areas. A weighing tank group composed of a plurality of weighing tanks is arranged below the daily-use storage tank in the gravity direction. The plurality of liquid storage areas are connected to the plurality of weighing tanks in one-to-one correspondence.

[0060] Step S10 further includes step S11:

[0061] Judge whether the liquid level in each liquid storage area of the daily-use storage tank has reached the liquid level preset threshold.

[0062] If so, control the liquid storage area to convey the liquid additive to the corresponding weighing tank under the action of gravity.

[0063] If not, pump the liquid additive in the liquid raw material tank into the liquid storage area through the third pump.

[0064] Beneficial effects:

[0065] The mixing method of the feed and liquid additives in this application is based on a unified control method. First, different weighing tanks are used to weigh the liquid additives respectively based on the target addition information, which improves the weighing accuracy of various liquid additives. Each liquid raw material adopts the loss-in-weight weighing method independently, without interference with each other, and can be proportioned simultaneously, saving time. After obtaining the homogeneous liquid in the fluid mixer, it is transported to the buffer metering tank equipped with the second weighing sensor for weighing based on the loss-in-weight method, which can avoid the problem of low weighing accuracy caused by the large viscosity and wall sticking of the liquid. After the liquid mixing and emulsification in the fluid mixer are completed, all the homogeneous liquid is transported to the buffer metering tank for temporary storage and weighing. At this time, the fluid mixer can continue to process the liquid weighed by the weighing tank in the next batch, without causing production stagnation, and improving production efficiency. This application provides a mixing method of feed and liquid additives with high efficiency and high addition accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0067] Figure 1 It is a simple structural schematic diagram of the multi-liquid mixing and adding device in the embodiment of this application;

[0068] Figure 2 It is a structural schematic diagram of the fluid mixer in the multi-liquid mixing and adding device in the embodiment of this application;

[0069] Figure 3 It is a structural schematic diagram of the buffer metering tank in the multi-liquid mixing and adding device in the embodiment of this application;

[0070] Figure 4 It is a schematic flow chart of an embodiment of the mixing method of feed and liquid additives in the embodiment of this application;

[0071] Figure 5 It is a schematic system flow chart for implementing the mixing method of feed and liquid additives in the embodiment of this application.

[0072] Description of reference numerals:

[0073] 1 - Straw; 2 - Fifth hose section; 3 - Third pump; 4 - Liquid level switch; 5 - Radar liquid level gauge; 6 - Daily storage tank; 7 - First manual ball valve; 8 - First pneumatic angle seat valve; 9 - First hose section; 10 - Weighing tank; 11 - First weighing sensor; 12 - Second hose section; 13 - Second manual ball valve; 14 - Second pneumatic angle seat valve; 15 - Fluid mixer; 151 - Scraping wall device; 152 - First agitator; 153 - Emulsifying shearer; 154 - First liquid sensor; 155 - Second liquid sensor; 156 - First breather; 157 - Cleaning ball; 16 - Float valve; 17 - Liquid temporary storage tank; 18 - Third manual ball valve; 181 - Fourth manual ball valve; 19 - First filter; 20 - Water pump; 21 - First check valve; 22 - First flow meter; 23 - Third pneumatic angle seat valve; 231 - Fourth pneumatic angle seat valve; 24 - Gear pump; 25 - Photoelectric sensor; 26 - Fifth pneumatic angle seat valve; 27 - Sixth manual ball valve; 28 - Fifth manual ball valve; 29 - First pump; 30 - Third hose section; 31 - Buffer metering tank; 311 - Second breather; 312 - Second agitator; 32 - Second weighing sensor; 33 - Fourth hose section; 34 - Seventh pneumatic angle seat valve; 35 - Ninth manual ball valve; 36 - Seventh manual ball valve; 37 - Third filter; 38 - Third check valve; 39 - Second pump; 40 - Tenth manual ball valve; 41 - Pressure sensor; 42 - Eighth manual ball valve; 43 - Eighth pneumatic angle seat valve; 44 - Eleventh manual ball valve; 45 - Injection valve; 46 - Sixth pneumatic angle seat valve; 47 - Nozzle; 48 - Moisture sensor; 49 - Central control room control cabinet; 50 - On-site control cabinet; 51 - Liquid inlet pipe; 52 - First connecting pipeline; 53 - Second connecting pipeline; 54 - Water inlet pipeline; 55 - Oil inlet pipeline; 56 - First connecting main pipeline; 561 - First rigid pipe section; 57 - Second connecting main pipeline; 571 - Second rigid pipe section; 58 - Water outlet branch pipe; 59 - First branch pipe; 60 - Second branch pipe; 61 - Third branch pipe; 62 - Fourth branch pipe. Detailed implementation mode

[0074] The following will be combined with the attached Figure 1 To Figure 5 The technical solutions of the embodiments of the present application will be described in detail.

[0075] A method for mixing feed and liquid additives, characterized by comprising:

[0076] S10: Obtain the target addition information for mixing feed and liquid additives, where the target addition information includes the formula number and all types of liquid additives and the dosage of each liquid additive in the mixing formula corresponding to the formula number;

[0077] S20: Control the weighing tanks 10, each equipped with a first weighing sensor 11, to weigh the liquid additives in the mixing formula based on the weight-loss method according to the added target information. The types of liquid additives weighed by each weighing tank 10 are different, and all the weighed liquid additives are sent to the fluid mixer 15;

[0078] S30: Mix all the liquid additives required for emulsification in the fluid mixer 15 to obtain a homogeneous liquid;

[0079] S40: Transport the homogeneous liquid to the buffer metering tank 31 equipped with a second weighing sensor 32. The homogeneous liquid is weighed by the buffer metering tank 31 based on the weight-loss method and then transported to the mixer;

[0080] S50: Mix the weighed homogeneous liquid with the feed raw materials evenly in the mixer to obtain the feed product.

[0081] In some alternative embodiments of the present application, in step S20:

[0082] The liquid additives weighed by the weighing tank 10 are all liquid additives other than pure water;

[0083] In the direction of gravity, the fluid mixer 15 is below each weighing tank 10, and all the liquid additives weighed by each weighing tank 10 are sent to the fluid mixer 15 under the action of gravity.

[0084] In some alternative embodiments of the present application, when the liquid additives in the mixing formula contain water, it further includes step S21:

[0085] Transport the water in the mixing formula from the liquid storage tank 17 to the fluid mixer 15 through the water inlet pipeline 54 to be mixed with the liquid additives transported from each weighing tank 10 to the fluid mixer 15. The water inlet pipeline 54 is connected to the fluid mixer 15.

[0086] In some alternative embodiments of the present application, the water inlet end of the water inlet pipeline 54 is connected to the liquid storage tank 17 for storing water, and the amount of water added from the liquid storage tank 17 to the fluid mixer 15 is measured by a flow meter provided on the water inlet pipe.

[0087] In some alternative embodiments of the present application, the water inlet pipeline 54 is connected to the top of the fluid mixer 15, the outflow end of the water inlet pipeline 54 extends into the fluid mixer 15, and a cleaning ball 157 rotatably connected to the water inlet pipeline 54 is provided at the outflow end of the water inlet pipeline 54. The cleaning ball 157 is formed with a water outlet. When the fluid mixer 15 is emptied of liquid, external water source flows into the fluid mixer 15 from the water outlet of the cleaning ball 157 through the water inlet pipeline 54, and the cleaning ball 157 can rotate relative to the water inlet pipeline 54 under the action of water pressure to clean the inside of the fluid mixer 15.

[0088] In some alternative embodiments of the present application, when the liquid additive in the mixing formula contains grease, it further includes step S21':

[0089] The grease in the mixing formula is transported to the fluid mixer 15 through the oil inlet pipeline 55 and mixed with the liquid additives transported from each weighing tank 10 to the fluid mixer 15. The oil inlet pipeline 55 is connected to the fluid mixer 15.

[0090] In some alternative embodiments of the present application, the amount of grease added from the grease storage tank to the fluid mixer 15 is measured by a second flowmeter provided on the oil inlet pipeline 55. The grease inflow end of the oil inlet pipeline 55 is connected to the grease storage tank for storing grease.

[0091] In some alternative embodiments of the present application, the oil inlet pipeline 55 is connected to the top of the fluid mixer 15, and the outflow end of the oil inlet pipeline 55 extends into the fluid mixer 15.

[0092] In some alternative embodiments of the present application, step S30 further includes:

[0093] Step S31: Obtain the current mixing uniformity of the liquid in the fluid mixer 15 based on the current liquid parameters detected by the first liquid sensor 154 and / or the second liquid sensor 155 provided inside the fluid mixer 15. The first liquid sensor 154 is provided on the upper part of the inner side wall of the fluid mixer 15 and is used to detect the first liquid parameter. The second liquid sensor 155 is provided at the inner bottom of the fluid mixer 15 and is used to detect the second liquid parameter. The first liquid parameter and the second liquid parameter are of the same type.

[0094] In some alternative embodiments of the present application, when the current mixing uniformity is within the preset mixing uniformity range, step S40 is executed.

[0095] In some alternative embodiments of the present application, in step S40, a pneumatic diaphragm pump is used to transport the homogenized liquid to the buffer metering tank 31.

[0096] In some alternative embodiments of the present application, step S40 further includes:

[0097] Step S41: The fluid mixer 15 and the buffer metering tank 31 are connected through a first pipeline system. The first pipeline system includes a photoelectric sensor 25 provided at the outflow end of the fluid mixer 15. When the photoelectric sensor 25 detects that there is no homogenized liquid flowing out of the outflow end of the fluid mixer 15, it emits an emptying signal.

[0098] In some alternative embodiments of the present application, the target addition information in step S10 further includes a preset batch quantity and the addition quantity of the homogenized liquid per batch.

[0099] Step S40 further includes:

[0100] Step S42: After obtaining the evacuation signal, determine whether the amount of the homogenized liquid in the buffer metering tank 31 is greater than or equal to the addition amount of the homogenized liquid in a single batch.

[0101] If not, return to step S20 to determine whether the amount of the liquid in the weighing tank 10 is within the preset range.

[0102] If so, the weighing tank 10 conveys the liquid additive to the fluid mixer 15.

[0103] If not, the daily storage tank 6 for storing the liquid additive conveys the liquid additive to the weighing tank 10.

[0104] If so, execute step S43: Continue to determine whether the mixer liquid addition information is received.

[0105] If so, weigh the homogenized liquid in the buffer metering tank 31 based on the weight loss method and convey it to the mixer.

[0106] If not, continue to wait for the mixer liquid addition information to be sent.

[0107] In some alternative embodiments of the present application, in step S40, a variable frequency pump is used to convey the homogenized liquid in the buffer metering tank 31 into the mixer. The variable frequency pump is Figure 1 the second pump 39 in

[0108] In some alternative embodiments of the present application, in step S40, the variable frequency pump is controlled to adjust the conveying flow rate of the homogenized liquid, and the homogenized liquid weighed by the buffer metering tank 31 is conveyed into the mixer within a preset time period of 30 s to 50 s;

[0109] In some alternative embodiments of the present application, the preset time period is 30 s, 35 s, 40 s, 45 s or 50 s.

[0110] In some alternative embodiments of the present application, the buffer metering tank 31 is connected to the mixer through a second pipeline system. The second pipeline system includes a plurality of nozzles 47 arranged in the mixer and the homogenized liquid is ejected through the nozzles 47. Step S40 further includes:

[0111] Step S44: During the process of conveying the homogenized liquid to the mixer, detect the pipeline pressure of the second pipeline system.

[0112] If the pipeline pressure is between 0.2 Mpa and 0.4 Mpa, keep the current number of opened nozzles 47 and the operating frequency of the variable frequency pump.

[0113] If the pipeline pressure exceeds the numerical range of 0.2 Mpa to 0.4 Mpa, adjust the current number of opened nozzles 47 and adjust the operating frequency of the variable frequency pump.

[0114] In some alternative embodiments of the present application, step S40 includes:

[0115] Step S45: During the process of transporting the homogenized liquid to the mixer, detect whether the weight loss of the liquid in the buffer metering tank 31 is within the set range of the added liquid volume.

[0116] If so, stop the operation of the variable-frequency pump to stop adding the homogenized liquid to the mixer.

[0117] If not, continue to keep the variable-frequency pump operating to transport the homogenized liquid into the mixer.

[0118] In some alternative embodiments of the present application, the mixer is provided with a moisture sensor 48 for detecting the moisture value of the feed product.

[0119] Step S50 includes:

[0120] S51: After mixing is completed, detect the moisture value of the feed product.

[0121] If the detected moisture value reaches the preset value, the single-batch mixing ends.

[0122] If the detected moisture value does not reach the preset value, adjust the water or water-containing liquid in the mixing formula in step S20 to adjust the moisture value of the next single-batch feed product.

[0123] In some alternative embodiments of the present application, step S50 further includes:

[0124] Step S52: After the preparation of the current feed product is completed, determine whether the current completed batch quantity has reached the preset batch quantity.

[0125] If so, the batch addition ends.

[0126] If not, then continue to return to step S42.

[0127] In some alternative embodiments of the present application, the daily-use storage tank 6 for storing liquid additives is formed with a plurality of independent liquid storage areas. The weighing tank group composed of a plurality of weighing tanks 10 is arranged below the daily-use storage tank 6 in the gravity direction. The plurality of liquid storage areas are connected to the plurality of weighing tanks 10 in a one-to-one correspondence.

[0128] Step S10 further includes step S11:

[0129] Judge whether the liquid level in each liquid storage area of the daily-use storage tank 6 reaches the preset liquid level threshold.

[0130] If so, control the liquid storage area to transport the liquid additive to the corresponding weighing tank 10 under the action of gravity.

[0131] If not, then pump the liquid additive in the liquid raw material tank through a pump (specificallyFigure 1 is pumped into the liquid storage area by the third pump 3) in

[0132] The method for mixing feed and liquid additives in this application is based on a unified control method. First, different weighing tanks 10 are used to weigh liquid additives respectively based on the target addition information, which improves the weighing accuracy of various liquid additives. Each liquid raw material uses loss-in-weight weighing independently, without interference with each other, and batching can be carried out simultaneously, saving time. After obtaining a homogeneous liquid in the fluid mixer 15, it is transported to the buffer metering tank 31 equipped with a second weighing sensor 32 for weighing based on the loss-in-weight method, thereby avoiding the problem of low weighing accuracy caused by high liquid viscosity and wall sticking. After the liquid mixing and emulsification in the fluid mixer 15 are completed, all the homogeneous liquid is transported to the buffer metering tank 31 for temporary storage and weighing. At this time, the fluid mixer 15 can continue to process the liquid weighed by the weighing tank 10 in the next batch, without causing production stagnation, and improving production efficiency. This application provides a method for mixing feed and liquid additives with high efficiency and high addition accuracy.

Specific Embodiment

[0134] The method for mixing feed and liquid additives in this application can be based on the following liquid mixing and adding device.

[0135] A multi-liquid mixing and adding device is sequentially provided with: a daily storage tank 6, a group of weighing tanks 10, a fluid mixer 15, and a buffer metering tank 31 according to the liquid flow direction;

[0136] The daily storage tank 6 is formed with a plurality of independent liquid storage areas, and the group of weighing tanks 10 is arranged below the daily storage tank 6 in the gravity direction.

[0137] The group of weighing tanks 10 includes weighing tanks 10 respectively connected and arranged in one-to-one correspondence with a plurality of liquid storage areas. Each weighing tank 10 is used to weigh the liquid flowing out from the corresponding liquid storage area of the daily storage tank 6 to the weighing tank 10 under the action of gravity.

[0138] The fluid mixer 15 is arranged below the group of weighing tanks 10 in the gravity direction. The liquids in each weighing tank 10 flow into the fluid mixer 15 independently and controllably. The fluid mixer 15 is used to mix and homogenize the liquid flowing out under the action of gravity after being weighed by the weighing tank 10.

[0139] The liquid homogenized by the fluid mixer 15 flows into the buffer metering tank 31 through the first pipeline system and is weighed by the buffer metering tank 31, and then flows into the mixer through the second pipeline system. The liquid is sprayed onto the solid matter placed in the mixer through a group of nozzles 47 arranged at the top inside the mixer. Among them, the first pipeline system and the second pipeline system are respectively provided with a first pump 29 and a second pump 39 to transport the liquid.

[0140] In some alternative embodiments of the present application, each liquid storage area in the daily-use storage tank 6 is correspondingly connected to the liquid outlet end of a liquid inlet pipe 51, and the liquid inlet end of the liquid inlet pipe 51 is used to connect to a liquid raw material tank.

[0141] In some alternative embodiments of the present application, a liquid level gauge for real-time monitoring of the liquid level height is provided in each liquid storage area. The liquid level gauge can be a radar liquid level gauge 5 or an ultrasonic liquid level gauge.

[0142] In some alternative embodiments of the present application, a third pump 3 is provided on the liquid inlet pipe 51 to pump the raw liquid in the liquid raw material tank to the corresponding liquid storage area.

[0143] As Figure 1 shown, in some specific examples, three liquid storage areas are provided in the daily-use storage tank 6, each liquid storage area correspondingly stores different liquid additives, each liquid storage area is correspondingly connected to the liquid outlet end of a liquid inlet pipe 51, and the liquid inlet end of the liquid inlet pipe 51 is used to connect to a liquid raw material tank. Before the third pump 3, a fifth hose section 2 and a suction pipe 1 are sequentially provided on the liquid inlet pipe 51. The suction pipe 1 is used to insert into the liquid raw material tank to suck the liquid, and the subsequent fifth hose section 2 connected to the suction pipe 1 facilitates the movement of the suction pipe 1, which is conducive to the suction of the raw liquid and the replacement of the liquid raw material tank. The liquid raw material tank includes IBC barrels, round barrels, large storage tanks, etc.

[0144] It can be understood that in other examples, N liquid storage areas can be provided in the daily-use storage tank 6, where N is greater than 1 and is a natural number. One or more liquid storage areas can be used for liquid storage during the production of different feeds.

[0145] In some alternative embodiments of the present application, a liquid level switch 4 is provided at the top of each liquid storage area. When the liquid in the liquid storage area is replenished to the warning high liquid level, the liquid contacts the liquid level switch 4 and triggers the liquid level switch 4 to close to control the stop of replenishing the liquid storage area.

[0146] In some alternative embodiments of the present application, the weighing tank 10 is connected to the corresponding liquid storage area through a first connection pipeline 52. In the direction of gravity, a first manual ball valve 7 and a first pneumatic angle seat valve 8 are sequentially provided on the first connection pipeline 52. A first hose section 9 is provided in the first connection pipeline 52 and is connected to the top inflow end of the weighing tank 10. The inflow end of the first hose section 9 is after the outflow end of the first pneumatic angle seat valve 8.

[0147] In these embodiments, the first manual ball valve 7 manually controls the opening and closing of the first connection pipeline 52, which is convenient for maintenance.

[0148] An electromagnetic valve is installed on the first pneumatic angle seat valve 8, and its main function is to achieve remote automatic control and improve the control accuracy and response speed of the system. The electromagnetic valve controls the opening and closing of the electromagnetic valve through an electric signal, which can control the compressed air, thereby controlling the opening and closing of the pneumatic angle seat valve. Thus, precise adjustment of fluid control can be achieved. It can automatically control the opening and closing of the pipeline.

[0149] In some alternative embodiments of the present application, each weighing tank 10 is connected to the fluid mixer 15 through a second connecting pipeline 53. In the direction of gravity, a second manual ball valve 13 and a second pneumatic angle seat valve 14 are sequentially arranged on the second connecting pipeline 53. A second hose section 12 is arranged in the second connecting pipeline 53 and is connected to the outflow end at the bottom of the weighing tank 10.

[0150] In these embodiments, the functions of the manual ball valve and the pneumatic angle seat valve arranged on the first connecting pipeline 52 and the second connecting pipeline 53 are basically the same. The settings of the first hose section 9 and the second hose section 12 are to avoid the hard connection between the rigid pipe and the weighing tank 10 from affecting the weighing accuracy of the weighing tank 10.

[0151] The weighing sensor arranged on the weighing tank 10 uses the weight loss method to measure the liquid in the weighing tank 10, that is, the reduction amount of the liquid in the weighing tank 10 is equal to the increase amount of the liquid in the fluid mixer 15.

[0152] As Figure 2 shown, in some alternative embodiments of the present application, a first liquid sensor 154 is installed inside the top of the fluid mixer 15, and a second liquid sensor 155 is installed inside the bottom of the fluid mixer 15. The first liquid sensor 154 and the second liquid sensor 155 are respectively used to detect the first liquid parameter of the upper part of the liquid in the fluid mixer 15 and the second liquid parameter of the lower part of the liquid in the fluid mixer 15. The first liquid parameter and the second liquid parameter are of the same type of parameter. Based on the first liquid parameter and the second liquid parameter, the mixing uniformity of the liquid in the fluid mixer 15 is obtained.

[0153] In some alternative embodiments of the present application, the first liquid parameter and the second liquid parameter are the pH value of the liquid or the dielectric constant of the liquid.

[0154] In some alternative embodiments of the present application, an emulsifying shearer 153 and a first stirrer 152 are further arranged in the bottom area of the fluid mixer 15. The emulsifying shearer 153 is used to homogenize the liquid, and the first stirrer 152 is used to mix the liquids flowing in from each weighing tank 10 evenly. The emulsifying shearer 153 applies a high-speed rotating mechanical mechanism to break the liquid into fine droplets to prepare a stable homogeneous liquid.

[0155] In some alternative embodiments of the present application, a scraping device 151 is provided on the inner circumference of the fluid mixer 15, and the scraping device 151 is used to scrape off the liquid remaining on the wall of the fluid mixer 15.

[0156] The fluid mixer 15 mixes and emulsifies the liquid through the first stirrer 152 and the emulsifying shearer 153, and the scraping device 151 can reduce liquid residue.

[0157] In some alternative embodiments of the present application, a first breather 156 is further installed on the top of the fluid mixer 15. The first breather 156 is used to maintain the air pressure balance inside and outside the tank to ensure smooth liquid inlet and outlet. The breather mainly consists of a housing and a filter element. The housing is usually made of stainless steel (such as SUS304 or SUS316L). The core component of the breather is the filter element, which is usually made of polypropylene (PP folded filter element) or polytetrafluoroethylene. It can effectively slow down the internal pressure of the tank and pipeline, and make the discharge of the tank or pipeline smooth.

[0158] In some alternative embodiments of the present application, it further includes:

[0159] A water inlet pipeline 54, which is connected to the top of the fluid mixer 15, and the water inlet pipeline 54 is used to convey water to the fluid mixer 15.

[0160] In some alternative embodiments of the present application, a third manual ball valve 18, a first filter 19, a water pump 20, a first one-way valve 21, a first flow meter 22 and a third pneumatic angle seat valve 23 are sequentially arranged in the water inlet direction of the water inlet pipeline 54. The water pump 20 is used to convey the water from the external water source into the fluid mixer 15, and the flow meter is used to measure the amount of water input into the fluid mixer 15.

[0161] In some alternative embodiments of the present application, a liquid storage tank 17 is connected to the liquid inlet end of the water inlet pipeline 54. The liquid storage tank 17 is provided with a float valve 16, and the float valve 16 is used to control the liquid level. When the liquid level rises, the float also rises, driving the switch to act through the lever mechanism, and the valve closes; on the contrary, when the liquid level drops, the float drops and the valve opens.

[0162] In some alternative embodiments of the present application, it further includes: an oil inlet pipeline 55, which is connected to the top of the fluid mixer 15, and the oil inlet pipeline 55 is used to convey grease to the fluid mixer 15. In these embodiments, when a large amount of grease needs to be mixed with feed raw materials for preparing feed products, the grease is added through the oil inlet pipeline 55, and the weighing tank 10 is used to weigh a small amount of liquid additives.

[0163] In some alternative embodiments of the present application, a grease storage tank is connected to the liquid inlet end of the oil inlet pipeline 55. A float valve 16 is provided in the liquid storage tank 17. The float valve 16 is used to control the liquid level. When the liquid level rises, the float also rises, driving the switch to act through a lever mechanism, and the valve closes; conversely, when the liquid level drops, the float drops and the valve opens.

[0164] In some alternative embodiments of the present application, a fourth manual ball valve 181, a second filter, a gear pump 24, a second one-way valve, a second flowmeter, and a fourth pneumatic angle seat valve 231 are sequentially arranged in the grease conveying direction of the oil inlet pipeline 55.

[0165] In some alternative embodiments of the present application, the outflow end of the water inlet pipeline 54 extends into the fluid mixer 15. A cleaning ball 157 rotatably connected to the water inlet pipeline 54 is provided at the outflow end of the water inlet pipeline 54. The cleaning ball 157 is formed with a water outlet. External water source flows into the fluid mixer 15 from the water outlet of the cleaning ball 157 through the water inlet pipeline 54, and the cleaning ball 157 can rotate relative to the water inlet pipeline 54 under the action of water pressure to clean the interior of the fluid mixer 15.

[0166] In the embodiments of the present application, the water consumption can be accurately measured by a flowmeter. Water can be used as one of the liquid additives in this embodiment, or can be simply used as the cleaning liquid.

[0167] In some embodiments, the cleaning ball 157 can rotate relative to the interior of the fluid mixer 15 under the action of water pressure, and the rotation direction is perpendicular to the axial direction of the fluid mixer 15 itself, so that the cleaning ball 157 can better clean the interior of the fluid mixer 15.

[0168] In some other embodiments, the cleaning ball 157 is formed with a plurality of water outlets, and the cleaning objects of the water flowing out of the cleaning ball 157 include the inner circumference of the fluid mixer 15, the top and the bottom of the fluid mixer 15.

[0169] In some alternative embodiments of the present application, the first pipeline system includes a first connecting main pipeline 56.

[0170] The first connecting main pipeline 56 includes a connected first rigid pipe section 561 and a third hose section 30. The liquid inlet end of the first rigid pipe section 561 is connected to the liquid outflow end at the bottom of the fluid mixer 15. The liquid outflow end of the first rigid pipe section 561 is connected to the liquid inlet end of the third hose section 30. The liquid outflow end of the third hose section 30 is connected to the liquid inlet end at the top of the buffer metering tank 31. A first pump 29 is provided on the first rigid pipe section 561.

[0171] In some alternative embodiments of the present application, along the liquid flow direction of the first connecting main pipeline 56, an optoelectronic sensor 25, a fifth pneumatic angle seat valve 26, a fifth manual ball valve 28, and a first pump 29 are sequentially arranged on the first connecting main pipeline 56.

[0172] The optoelectronic sensor 25 is used to monitor whether the liquid in the fluid mixer 15 has run out, and sends a signal when it detects that there is no liquid in the fluid mixer 15. The output signal type is NPN or PNP output, which can drive a relay or a PLC to send a signal to the control system.

[0173] In some alternative embodiments of the present application, the first pipeline system further includes a first branch pipe 59. The connection of the first branch pipe 59 to the first connecting main pipeline 56 is between the fifth pneumatic angle seat valve 26 and the fifth manual ball valve 28. A sixth manual ball valve 27 is arranged on the first branch pipe 59.

[0174] In some alternative embodiments of the present application, the first pump 29 is a pneumatic diaphragm pump.

[0175] As Figure 3 shown, in some alternative embodiments of the present application, a second stirrer 312 is arranged in the buffer metering tank 31 for stirring the liquid to prevent liquid stratification.

[0176] A second breather 311 is further arranged at the top of the buffer metering tank 31 for maintaining the air pressure balance inside and outside the tank to ensure smooth liquid inflow and outflow.

[0177] In some alternative embodiments of the present application, the fifth pneumatic angle seat valve 26, the fifth manual ball valve 28, and the sixth manual ball valve 27 on the first branch pipe 59 control the opening and closing of the first branch pipe 59. After cleaning the fluid mixer 15, the cleaning liquid can be discharged outside the fluid mixer 15 through the first branch pipe 59 by controlling the above three valves.

[0178] In some alternative embodiments of the present application, the second pipeline system includes a connected second connecting main pipeline 57 and a group of water outlet branch pipes 58.

[0179] The second connecting main pipeline 57 includes a connected second rigid pipe section 571 and a fourth hose section 33. The liquid inflow end of the fourth hose section 33 is connected to the liquid outflow end at the bottom of the buffer metering tank 31, the liquid outflow end of the fourth hose section 33 is connected to the liquid inflow end of the second rigid pipe section 571, and the liquid outflow end of the second rigid pipe section 571 is connected to the total inflow end of the group of water outlet branch pipes 58.

[0180] The group of water outlet branch pipes 58 includes a plurality of parallel water outlet branch pipes 58. Each water outlet branch pipe 58 is connected with one or more nozzles 47. A sixth pneumatic angle seat valve 46 is arranged in front of the liquid inlet end of all the nozzles 47 for each water outlet branch pipe 58. All the nozzles 47 form a group of nozzles 47.

[0181] In some alternative embodiments of the present application, in the liquid flow direction of the second connecting main pipeline 57, a seventh pneumatic angle seat valve 34, a seventh manual ball valve 36, a third filter 37, a third one-way valve 38, a second pump 39, a pressure sensor 41, an eighth manual ball valve 42, and an eighth pneumatic angle seat valve 43 are sequentially arranged on the second rigid pipe section 571.

[0182] In some alternative embodiments of the present application, the second pipeline system further includes a second branch pipe 60. The connection point of the second branch pipe 60 and the second connecting main pipeline 57 is arranged between the seventh pneumatic angle seat valve 34 and the seventh manual ball valve 36. A ninth manual ball valve 35 is also arranged on the second branch pipe 60.

[0183] In some alternative embodiments of the present application, the second pipeline system further includes a third branch pipe 61. The connection point of the third branch pipe 61 and the second connecting main pipeline 57 is arranged between the second pump 39 and the pressure sensor 41. A tenth manual ball valve 40 is arranged on the third branch pipe 61.

[0184] In some alternative embodiments of the present application, the second pipeline system further includes a fourth branch pipe 62. The connection point of the fourth branch pipe 62 and the second connecting main pipeline 57 is arranged between the eighth pneumatic angle seat valve 43 and the total inflow end of the water outlet branch pipe 58 group. The fourth branch pipe 62 is used to convey compressed gas to the water outlet branch pipe 58 group. An eleventh manual ball valve 44 and a blow-off valve 45 are sequentially arranged on the fourth branch pipe 62 in the compressed gas conveying direction. The blow-off valve 45 is used to control the amount of compressed air pumped in externally to clean the second pipeline system. By controlling the opening number of the sixth pneumatic angle seat valve 46, the number of nozzles 47 for spraying liquid is controlled, so that the pressure of the second pipeline system reaches a preset value.

[0185] In some alternative embodiments of the present application, a mixing chamber and a buffer hopper located below the mixing chamber are formed in the mixer. A stirring and mixing mechanism is arranged in the mixing chamber, and a moisture sensor 48 is arranged in the buffer hopper for detecting the moisture content in the product obtained by mixing the liquid and the solid.

[0186] The setting of manual valves in the pipeline system facilitates maintenance by manually controlling the on-off of the pipeline. The pneumatic angle seat valve is equipped with an electromagnetic valve, which automatically controls the on and off of the pipeline according to the control signal. When changing the formula for mixing feed and liquid additives, the ninth manual ball valve 35 arranged on the second branch pipe 60 can discharge the residual liquid in the buffer metering tank 31 by controlling the opening of the seventh pneumatic angle seat valve 34 and the ninth manual ball valve 35 on the second branch pipe 60.

[0187] The third pipe 61 is arranged between the second pump 39 and the pressure sensor 41 and is used as a sampling port. It can be used to take out the liquid, calibrate the amount of liquid output from the buffer metering tank 31, and verify the accuracy of the equipment. It can also discharge the cleaning liquid when cleaning the pipeline and the pump.

[0188] The filter setting can prevent impurities from entering the second pump 39 and causing damage.

[0189] The second pump 39 is designed as a variable-frequency pump and can transport the liquid in the buffer metering tank 31 to the mixer. The control of the liquid delivery volume is achieved through the variable-frequency function in the variable-frequency pump. Specifically, the variable-frequency pump is a gear pump 24, a rotor pump or a screw pump. By adjusting the operating speed of the pump, the liquid delivery volume can be controlled.

[0190] The pressure sensor 41 can detect the pressure on the second connecting main pipeline 57 and transmit the pressure data to the central control system.

[0191] The central control system controls the on-off of the sixth pneumatic angle seat valve 46 on each water outlet branch pipe 58 according to the received pressure data, and then controls the number of nozzles 47 used to ensure that the pressure during the addition process is appropriate. The nozzle 47 sprays the liquid additive mixture into the mixing chamber, and the stirring and mixing mechanism works simultaneously to achieve the mixing and addition of solid feed and liquid additives.

[0192] During the process of adding liquid additives to liquid feed raw materials to prepare the final feed product, the on-site control cabinet 50 is installed in the feed workshop to remotely control the multi-liquid batching device.

[0193] The central control room control cabinet 49 is installed in the central control room to remotely control the multi-liquid batching device, and a touch screen and an audible and visual alarm device are set.

[0194] As Figure 4 shown, the method for mixing feed and liquid additives according to the embodiment of the present application based on the above device is specifically as follows:

[0195] S10: Obtain the target addition information for mixing feed and liquid additives. The target addition information includes the formula number and all types of liquid additives and the dosage of each liquid additive in the mixing formula corresponding to the formula number. After obtaining the target addition information for mixing feed and liquid additives in these embodiments, the batch addition can start.

[0196] The target addition information in step S10 further includes a preset batch quantity and the addition quantity of the homogenized liquid in a single batch.

[0197] Step S10 further includes step S11:

[0198] Judge whether the liquid level in each liquid storage area of the daily use storage tank 6 reaches the liquid level preset threshold (for example, the liquid level preset threshold is 90%).

[0199] If so, control the liquid storage area to convey the liquid additive to the corresponding weighing tank 10 under the action of gravity.

[0200] If not, pump the liquid additive in the liquid raw material tank into the liquid storage area through a pump (such as a pneumatic diaphragm pump).

[0201] S20: Control the weighing tanks 10 each provided with a first weighing sensor 11 to weigh the liquid additives in the mixing formula based on the weight loss method according to the addition target information. The types of liquid additives weighed by each weighing tank 10 are different, and all the weighed liquid additives are sent to the fluid mixer 15.

[0202] In step S20:

[0203] The liquid additives weighed by the weighing tank 10 are all liquid additives other than pure water.

[0204] In the gravity direction, the fluid mixer 15 is below each weighing tank 10, and all the liquid additives weighed by each weighing tank 10 are sent to the fluid mixer 15 under the action of gravity.

[0205] When the liquid additive in the mixing formula contains water, it further includes step S21:

[0206] Convey the water in the mixing formula to the fluid mixer 15 through the water inlet pipeline 54 to be mixed with the liquid additives sent from each weighing tank 10 to the fluid mixer 15. The water inlet pipeline 54 is connected to the fluid mixer 15.

[0207] Step S21 specifically includes:

[0208] Step S211: Judge whether the liquid volume in the weighing tank 10 is within the set range of the liquid volume in the weighing tank 10. The set range of the liquid volume in the weighing tank 10 is the set value of the weighing tank 10 + the allowable deviation.

[0209] If so, the weighing tank 10 conveys the liquid to the fluid mixer 15.

[0210] If not, keep the daily use storage tank 6 conveying liquid to the weighing tank 10.

[0211] Step S212: Judge whether the liquid weight loss of the weighing tank 10 is within the set range of the liquid weight loss of the weighing tank 10. The set range of the liquid weight loss of the weighing tank 10 is the liquid weight loss of the weighing tank 10 + the allowable deviation.

[0212] If so, pump water to the fluid mixer 15 through the water pump 20 (this refers to the operation when water is contained in the formula. If it is not water, this operation is not carried out).

[0213] If not, continue to keep the weighing tank 10 delivering liquid to the fluid mixer 15.

[0214] Step S213: Determine whether the delivery volume feedback by the first flowmeter 22 is within the water increase volume setting range. The water increase volume setting range is the set ingredient amount of water in the mixing formula + the allowable deviation.

[0215] If so, proceed to step S30;

[0216] If not, continue to keep the water pump 20 delivering water to the fluid mixer 15.

[0217] When the liquid additive in the mixing formula contains grease, it further includes step S21':

[0218] Deliver the grease in the mixing formula to the fluid mixer 15 through the oil inlet pipeline 55 to be mixed with the liquid additives delivered from each weighing tank 10 to the fluid mixer 15. The oil inlet pipeline 55 is connected to the fluid mixer 15;

[0219] The amount of grease added to the fluid mixer 15 is measured by the second flowmeter provided on the oil inlet pipeline 55;

[0220] The oil inlet pipeline 55 is connected to the top of the fluid mixer 15, and the outflow end of the oil inlet pipeline 55 extends into the fluid mixer 15.

[0221] Step S21' ( Figure 4 omitted) specifically includes:

[0222] Step S211': Determine whether the liquid amount in the weighing tank 10 is within the weighing tank 10 liquid amount setting range. The weighing tank 10 liquid amount setting range is the weighing tank 10 set value + the allowable deviation,

[0223] If so, the weighing tank 10 delivers liquid to the fluid mixer 15;

[0224] If not, keep the daily use storage tank 6 delivering liquid to the weighing tank 10.

[0225] Step S212': Determine whether the liquid weight loss of the weighing tank 10 is within the weighing tank 10 liquid weight loss setting range. The weighing tank 10 liquid weight loss setting range is the weighing tank 10 liquid weight loss + the allowable deviation,

[0226] If so, deliver grease to the fluid mixer 15 through the gear pump 24 (this refers to the operation when the formula contains grease. If it is not grease, this operation is not performed),

[0227] If not, continue to keep the weighing tank 10 delivering liquid to the fluid mixer 15.

[0228] Step S213’: Determine whether the delivery volume feedback by the second flowmeter is within the set range of the grease increase amount. The set range of the grease increase amount is the set ingredient amount of the grease in the mixed formula + the allowable deviation.

[0229] If so, proceed to step S30;

[0230] If not, continue to keep the gear pump 24 delivering grease to the fluid mixer 15.

[0231] In some embodiments, the operations of delivering grease and delivering water to the fluid mixer 15 in S21’ and S21 respectively can be carried out synchronously.

[0232] S30: Mix all the liquid additives required for emulsification in the fluid mixer 15 to obtain a homogeneous liquid.

[0233] Step S30 further includes:

[0234] Step S31: Obtain the current mixing uniformity of the liquid in the fluid mixer 15 through the current liquid parameters detected by the first liquid sensor 154 and / or the second liquid sensor 155 provided inside the fluid mixer 15. The first liquid sensor 154 is arranged at the upper part of the inner side wall of the fluid mixer 15, and the second liquid sensor 155 is arranged at the inner bottom of the fluid mixer 15. The first liquid parameter and the second liquid parameter are of the same type;

[0235] Judge whether the current mixing uniformity is within the preset mixing uniformity range (the target value of the mixing uniformity + the allowable deviation)

[0236] If so, that is, when the current mixing uniformity is within the preset mixing uniformity range, execute step S40;

[0237] If not, continue to keep the fluid mixer 15 working and perform the mixing and homogenization treatment on various liquid additives.

[0238] S40: Deliver the homogeneous liquid to the buffer metering tank 31 provided with the second weighing sensor 32. The homogeneous liquid is weighed by the buffer metering tank 31 based on the weight loss method and then delivered to the mixer.

[0239] Step S41: The fluid mixer 15 and the buffer metering tank 31 are connected through a first pipeline system. The first pipeline system includes a photoelectric sensor 25 arranged at the outflow end of the fluid mixer 15. The photoelectric sensor 25 emits an emptying signal when it detects that there is no homogeneous liquid flowing out of the outflow end of the fluid mixer 15;

[0240] In step S40, a pneumatic diaphragm pump is used to deliver the homogeneous liquid into the buffer metering tank 31.

[0241] In step S41, the photoelectric sensor 25 detects whether there is homogeneous liquid flowing out of the outflow end of the fluid mixer 15.

[0242] If so, proceed to step S42;

[0243] If not, continue to keep the pneumatic diaphragm pump working and quickly transport the liquid in the fluid mixer 15 to the buffer metering tank 31.

[0244] Step S40 further includes:

[0245] Step S42: After obtaining the emptying signal, determine whether the amount of the homogenized liquid in the buffer metering tank 31 is greater than or equal to the addition amount of the homogenized liquid in a single batch.

[0246] If not, return to step S20 to determine whether the amount of liquid in the weighing tank 10 is within the preset range.

[0247] If so, the weighing tank 10 conveys the liquid additive to the mixer.

[0248] If not, convey the liquid additive to the weighing tank 10.

[0249] If so, execute step S43: Continue to determine whether a liquid addition signal of the mixer is received.

[0250] If so, weigh the homogenized liquid in the buffer metering tank 31 based on the weight loss method and then convey it to the mixer. In step S40, the second pump 39 (variable frequency pump) is used to convey the homogenized liquid in the buffer metering tank 31 into the mixer.

[0251] If not, continue to wait for the liquid addition information of the mixer to be sent out.

[0252] The buffer metering tank 31 is connected to the mixer through a second pipeline system. The second pipeline system includes a plurality of nozzles 47 arranged in the mixer and the homogenized liquid is ejected through the nozzles 47. Step S40 further includes:

[0253] Step S44: During the process of conveying the homogenized liquid to the mixer, detect the pipeline pressure of the second pipeline system and determine whether the pipeline pressure is within the range of 0.2 Mpa to 0.4 Mpa, including the end values.

[0254] If the pipeline pressure is within 0.2 Mpa to 0.4 Mpa, keep the current number of opened nozzles 47 and the operating frequency of the second pump 39 unchanged.

[0255] If the pipeline pressure exceeds the numerical range of 0.2 Mpa to 0.4 Mpa, adjust the current number of opened nozzles 47 and adjust the operating frequency of the second pump 39.

[0256] Step S45: During the process of conveying the homogenized liquid to the mixer, detect whether the weight loss of the liquid in the buffer metering tank 31 is within the set addition liquid amount range.

[0257] If so, stop the operation of the second pump 39 to stop supplying the homogenized liquid to the mixer.

[0258] If not, continue to keep the second pump 39 operating to transport the homogenized liquid into the mixer.

[0259] Step S50: Mix the weighed homogenized liquid with the feed raw materials in the mixer to obtain the feed product.

[0260] A moisture sensor 48 is arranged on the mixer to detect the moisture value of the feed product.

[0261] Step S50 includes:

[0262] Step S51: After mixing, detect the moisture value of the feed product. If the detected moisture value reaches the preset value, the single-batch mixing ends.

[0263] If the detected moisture value does not reach the preset value, adjust the water or water-containing liquid in the mixing formula in step S20 to adjust the moisture value of the next single-batch feed product.

[0264] Step S50 also includes:

[0265] Step S52: After the preparation of the current feed product is completed, judge whether the current completed batch quantity reaches the preset batch quantity. If so, the batch addition ends. If not, return to step S42.

[0266] In the mixing method of the feed and the liquid additive provided by the embodiment of the present application, various liquid raw materials are transported to the daily storage tank 6 through a pneumatic diaphragm pump. When the liquid in the weighing tank 10 is insufficient, the liquid in the daily storage tank 6 is controlled by a pneumatic angle seat valve and flows into the weighing tank 10 under the action of gravity for replenishment. The weighing tank 10 measures the liquid by the "weight loss method", that is, the reduced amount of the liquid in the weighing tank 10 is equal to the increased amount of the liquid entering the fluid mixer 15, eliminating the influence of liquid wall hanging on the measurement accuracy. Water is input into the fluid mixer 15 through a pump. There is a cleaning ball 157 in the tank, which can disperse the water flow and clean the fluid mixer 15 during the process of emptying the fluid mixer 15 and stopping the mixing and oxidation work. The fluid mixer 15 mixes and emulsifies the liquid through a stirrer and an emulsifying shearer 153, and the scraping wall device 151 can reduce the liquid residue. The first liquid sensor 154 and / or the second liquid sensor 155 installed on the upper and lower parts can detect the mixing uniformity of the liquid. After the mixing and emulsification are completed, the liquid is quickly transferred to the buffer metering tank 31 through a pneumatic diaphragm pump. The stirring paddle in the tank can ensure the flow of the liquid and prevent the liquid from stratifying.

[0267] The liquid in the buffer metering tank 31 is pumped into the mixer according to a set amount, and the reduction amount of the liquid in the buffer metering tank 31 is equal to the increase amount of the liquid entering the mixer. The second pump 39 can regulate the conveying rate to ensure that the liquid is added completely within a very short time of 40 s. The front end of the nozzle 47 is equipped with a pneumatic angle seat valve. The system can automatically calculate the opening quantity and position of the pneumatic angle seat valve according to the real-time pressure of the pipeline, ensuring that there is a pressure of 0.2 - 0.4 Mpa at the nozzle 47 to achieve the best spraying effect.

[0268] The moisture sensor 48 installed on the buffer hopper of the mixer detects the moisture of the mixed feed. If the feed moisture deviates from the set value, the batching amount of water or liquid containing water raw materials in the fluid mixer 15 will be adjusted in the next batch until the feed moisture reaches the set value.

[0269] As Figure 5 shown, in some alternative embodiments, the method for mixing feed and liquid additives provided in the present application is implemented through a system including a central control system of a feed mill, a multi-liquid addition device, and a feed mixer (i.e., the mixer in Figure 1 ). Specifically,

[0270] The central control system of the feed mill transmits feed information to the multi-liquid addition device. The feed information includes the formula number, batch quantity, and the dosage of each liquid of the feed.

[0271] The multi-liquid addition device obtains liquid additives and water from outside the system. After receiving the feed information, the multi-liquid addition device adds the liquid to the feed mixer, and the liquid is mixed in the feed mixer.

[0272] During the mixing process of the feed mixer, it will transmit liquid addition information and material moisture feedback to the multi-liquid addition device. After receiving the liquid addition information and material moisture feedback, the multi-liquid addition device adjusts the added liquid to make the types and dosages of the added liquid consistent with the feed information.

[0273] The method for mixing feed and liquid additives provided in the embodiments of the present application can achieve rapid, efficient, and accurate mixing of feed and liquid additives to obtain the final feed mixture product.

[0274] The above are only the specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claimed rights.

Claims

1. A method for mixing feed and liquid additive, characterized in that, Including: S10: Obtain the target addition information of the feed mixed with liquid additives, where the target addition information includes the formula number and all types of liquid additives and the dosage of each liquid additive in the mixing formula corresponding to the formula number; S20: According to the addition target information, control multiple weighing tanks each provided with a first weighing sensor. Weigh the liquid additives in the mixing formula based on the weight loss method. Different types of liquid additives are weighed by each weighing tank, and all the weighed liquid additives are sent to a fluid mixer; S30: Process all the liquid additives required in the fluid mixer to obtain a homogeneous liquid; S40: Transport the homogeneous liquid to a buffer metering tank provided with a second weighing sensor. The homogeneous liquid is weighed based on the weight loss method by the buffer metering tank and then transported to a mixer; S50: In the mixer, the weighed homogeneous liquid is mixed evenly with feed raw materials to obtain a feed product.

2. The mixing method of feed and liquid additive according to claim 1, characterized in that, In the step S20: The liquid additives weighed by the weighing tanks are all non-pure water liquid additives; In the gravity direction, the fluid mixer is below each weighing tank, and all the liquid additives weighed by each weighing tank are sent to the fluid mixer under the action of gravity; Preferably, when the liquid additives in the mixing formula include water, it further includes step S21: Transport the water in the mixing formula to the fluid mixer through a water inlet pipeline to be mixed with the liquid additives transported from each weighing tank to the fluid mixer. The water inlet pipeline is connected to the fluid mixer; Preferably, the water inlet end of the water inlet pipeline is connected to a liquid temporary storage tank for storing water, and the amount of water added to the fluid mixer from the liquid temporary storage tank is measured by a first flow meter provided on the water inlet pipeline; Preferably, the water inlet pipeline is connected to the top of the fluid mixer, the outflow end of the water inlet pipeline extends into the fluid mixer, a cleaning ball rotatably connected to the water inlet pipeline is provided at the outflow end of the water inlet pipeline, the cleaning ball is formed with a water outlet, when the addition batch ends or the liquid formula needs to be changed, after controlling the fluid mixer to empty the liquid, external water source flows into the fluid mixer from the water outlet of the cleaning ball through the water inlet pipeline and the cleaning ball can rotate relative to the water inlet pipeline under the action of water pressure to clean the inside of the fluid mixer; When the liquid additives in the mixing formula include grease, it further includes step S21': Transport the grease in the mixing formula to the fluid mixer through an oil inlet pipeline to be mixed with the liquid additives transported from each weighing tank to the fluid mixer. The oil inlet pipeline is connected to the fluid mixer; Preferably, the amount of grease added to the fluid mixer is measured by a second flow meter provided on the oil inlet pipeline, and the grease inlet end of the oil inlet pipeline is connected to a grease temporary storage tank for storing grease; Preferably, the oil inlet pipeline is connected to the top of the fluid mixer, and the outflow end of the oil inlet pipeline extends into the fluid mixer.

3. The mixing method of feed and liquid additive according to claim 1, characterized in that, The step S30 further includes: Step S31: Obtain the current mixing uniformity of the liquid in the fluid mixer based on the current liquid parameters detected by the first liquid sensor and / or the second liquid sensor provided inside the fluid mixer. The first liquid sensor is arranged at the upper part of the inner side wall of the fluid mixer and is used to detect the first liquid parameter. The second liquid sensor is arranged at the inner bottom of the fluid mixer and is used to detect the second liquid parameter. The first liquid parameter and the second liquid parameter are of the same type of parameter; Preferably, when the current mixing uniformity is within the preset mixing uniformity range, then execute step S40.

4. The mixing method of the feed and the liquid additive according to claim 3, wherein Step S40 further includes: Step S41: The fluid mixer is connected to the buffer metering tank through a first pipeline system. The first pipeline system includes a photoelectric sensor arranged at the outflow end of the fluid mixer. The photoelectric sensor emits an emptying signal when it detects that there is no homogenized liquid flowing out of the outflow end of the fluid mixer; Preferably, in step S40, a pneumatic diaphragm pump is used to transport the homogenized liquid into the buffer metering tank.

5. The mixing method of feed and liquid additive according to claim 4, characterized in that, In step S10, the target addition information further includes a preset batch quantity and the addition quantity of the homogenized liquid in a single batch. Step S40 further includes: Step S42: After obtaining the emptying signal, judge whether the quantity of the homogenized liquid in the buffer metering tank is greater than or equal to the addition quantity of the homogenized liquid in a single batch. If not, return to step S20 to judge whether the quantity of the liquid in the weighing tank is within the preset range. If so, the weighing tank transports the liquid additive to the fluid mixer. If not, the daily-use storage tank for storing the liquid additive transports the liquid additive to the weighing tank; If so, execute step S43: Continue to judge whether the liquid addition information of the mixer is received. If so, weigh the homogenized liquid in the buffer metering tank based on the weight loss method and transport it to the mixer. If not, continue to wait for the liquid addition information of the mixer to be sent out.

6. The mixing method of the feed and the liquid additive according to claim 5, wherein In step S40, a variable-frequency pump is used to transport the homogenized liquid in the buffer metering tank into the mixer; Preferably, in step S40, control the variable-frequency pump to adjust the transport flow rate of the homogenized liquid, and transport the homogenized liquid weighed by the buffer metering tank into the mixer within a preset time period of 30 s to 50 s; Preferably, the preset time period is 30 s, 35 s, 40 s, 45 s or 50 s.

7. The mixing method of feed and liquid additive according to claim 6, wherein The buffer metering tank is connected to the mixer through a second pipeline system. The second pipeline system includes a plurality of nozzles arranged in the mixer and the homogenized liquid is sprayed out through the nozzles. Step S40 further includes: Step S44: During the process of transporting the homogenized liquid to the mixer, detect the pipeline pressure of the second pipeline system. If the pipeline pressure is between 0.2 Mpa and 0.4 Mpa, keep the current number of opened nozzles and the operating frequency of the variable-frequency pump. If the pipeline pressure exceeds the numerical range of 0.2 Mpa to 0.4 Mpa, adjust the current number of opened nozzles and adjust the operating frequency of the variable-frequency pump; Preferably, in step S45: during the process of transporting the homogenized liquid to the mixer, detect whether the addition amount of the liquid in the buffer metering tank to the mixer is within a set range. If so, stop the operation of the variable-frequency pump to stop adding the homogenized liquid to the mixer. If not, continue to keep the variable-frequency pump operating to transport the homogenized liquid into the mixer.

8. The mixing method of feed and liquid additive according to claim 5, characterized in that The mixer is provided with a moisture sensor for detecting the moisture value of the feed product. Step S50 includes: S51: After mixing is completed, detect the moisture value of the feed product. If the detected moisture value reaches the preset value, the single-batch mixing ends. If the detected moisture value does not reach the preset value, adjust the water or water-containing liquid in the mixing formula in step S20 to adjust the moisture value of the feed product in the next single batch. Preferably, step S50 further includes: Step S52: After the preparation of the current feed product is completed, determine whether the current completed batch quantity has reached the preset batch quantity. If so, the batch addition ends. If not, continue to return to step S42.

9. The mixing method of feed and liquid additive according to any one of claims 1 to 8, characterized in that, The daily-use storage tank for storing liquid additives is formed with a plurality of independent liquid storage areas. The weighing tank group composed of a plurality of weighing tanks is arranged below the daily-use storage tank in the gravity direction. The plurality of liquid storage areas are connected to the plurality of weighing tanks in a one-to-one correspondence. Step S10 further includes step S11: Judge whether the liquid level in each of the liquid storage areas in the daily-use storage tank reaches the liquid level preset threshold. If so, control the liquid storage area to transport the liquid additive to the corresponding weighing tank under the action of gravity. If not, pump the liquid additive in the liquid raw material tank into the liquid storage area.

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