Deastringency equipment for walnuts

Abstract

A deastringency device for walnuts comprises: a deastringency treatment tank for accommodating walnut kernels requiring deastringency treatment; the walnut kernel placing platform is arranged in the deastringency treatment tank and is used for bearing walnut kernels needing to be subjected to deastringency treatment; and the steam generation mechanism is communicated with the deastringency treatment tank, corresponds to the walnut kernel placement platform and is used for providing high-temperature steam of 95-120 DEG C for the walnut kernels in the deastringency treatment tank for 1-5 minutes for deastringency of the walnut kernels. By means of the structure, the problems that in the prior art, deastringency equipment for hot water soaking, long-time alkali treatment, high-concentration alkali treatment, baking and the like is complex in operation process, high in time consumption and economic cost and large in walnut nutrition loss can be effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of walnut de-astringency equipment, and mainly relates to a walnut de-astringency equipment. Background Art

[0002] Walnut is a nut rich in nutrients, rich in protein, unsaturated fatty acids and multiple vitamins. The protein in walnut is a high-quality plant protein, containing multiple essential amino acids, suitable for all kinds of people. Compared with other animal dairy products, plant protein beverages made from walnuts are less likely to cause symptoms such as lactose intolerance and are more easily accepted by consumers.

[0003] However, the endocarp of walnut kernel contains astringent substances, which causes the bitter taste of walnut kernel, which is not easily accepted by consumers. Therefore, in the actual processing of walnut kernel products, walnut de-astringency is a key step in the deep processing of walnut. In order to solve the above problems, traditional walnut kernel processing methods, such as: Publication No. CN203776073U and CN206659031U disclosed walnut de-astringency devices, using hot water soaking, long-time alkali treatment, high-concentration alkali treatment, baking, etc., although de-astringency can be achieved to a certain extent, these methods not only have complicated operating procedures, consume time and economic costs, but also are likely to cause a large number of losses of walnut kernel. Traditional de-astringency methods also often choose to remove the entire outer skin of walnut kernel, which means that walnut kernel can lose a large amount of nutrients.

[0004] Therefore, in the prior art, there is an urgent need for a new de-astringency equipment that can simplify the operation process, reduce time consumption and economic costs while completing the de-astringency work, and can also retain the nutrition of walnuts more completely. Summary of the invention

[0005] Therefore, the present invention aims to provide a de-astringency device for walnuts, which simplifies the operation process, reduces time consumption and economic costs, and can more completely retain the nutrition of walnuts while completing the de-astringency work. The present application provides a de-astringency device for walnuts, comprising:

[0006] A de-astringency tank, used for containing walnut kernels that need to be de-astringent;

[0007] A walnut kernel placement platform is arranged in the de-astringency treatment tank and is used to carry walnut kernels that need to be de-astringent;

[0008] The steam generating mechanism is connected with the de-astringency treatment tank and corresponds to the walnut kernel placing platform, and is used to provide high-temperature steam of 95° C. to 120° C. for 1 minute to 5 minutes to de-astringe the walnut kernels in the de-astringency treatment tank.

[0009] Optionally, the steam generating mechanism comprises:

[0010] A steam pipeline is arranged below the walnut kernel placement platform. There are multiple steam pipelines and they are arranged parallel to the walnut kernel placement platform. Steam exhaust holes are staggered in the length direction of the steam pipeline. The aperture range of the steam exhaust holes is 0.5 mm to 2 mm and they are evenly distributed. The steam exhaust holes are arranged toward the walnut kernel placement to prevent the local temperature from being too high due to concentrated steam injection.

[0011] Optionally, the walnut kernel placement platform is a walnut sieve plate;

[0012] The walnut sieve plate comprises: a placement platform composed of a plurality of sieve plate blades, a driving shaft arranged at the end of the sieve plate blade to drive the sieve plate blade to rotate, and a driving source for driving the driving shaft;

[0013] The sieve plate blades have a bearing position arranged in the horizontal direction of the de-astringency treatment tank to support the walnut kernels, and a discharge position arranged in the vertical direction of the de-astringency treatment tank to transfer the walnut kernels;

[0014] The sieve plate blades are provided with sieve holes to ensure that the steam passes through the walnut sieve plate and filters the walnut kernels.

[0015] Optionally, the sieve plate blades are arranged in a staggered manner to spread the walnut kernels evenly; and / or,

[0016] The sieve hole size on the sieve plate blade is 3mm to 4mm×24mm to 32mm, and the adjacent sieve holes are spaced 3mm to 4mm apart.

[0017] Optionally, the driving source includes: a gear arranged on the driving shaft, and a driving chain for driving the gear to rotate.

[0018] Optional equipment for removing astringency from walnuts also includes:

[0019] The spray mechanism is arranged in the de-astringency treatment tank, and is used to spray cold water onto the walnut kernels in the de-astringency treatment tank to perform preliminary cleaning on the incoming walnut materials and remove surface impurities, dust and some water-soluble bitter substances; and after the walnut kernels are soaked in alkali solution and steam-treated, the alkali solution remaining on the surface of the walnut kernels is removed by the spray mechanism.

[0020] Optionally, the spraying mechanism includes: a rotating spray head arranged in the de-astringency treatment tank and located above the walnut kernel placing platform, the rotation angle of the rotating spray head covers 360 degrees, the rotating spray head is connected to the liquid supply pipe and is driven to rotate to spray clean water on the walnut kernel on the walnut kernel placing platform in all directions, and the water pressure range of the rotating spray head is 0.1MPa to 0.6MPa.

[0021] Optional equipment for removing astringency from walnuts also includes:

[0022] A sensor assembly, comprising: a temperature sensor disposed in the deastringency treatment tank for detecting the temperature inside the tank, a level sensor for detecting the liquid level of the liquid medium in the deastringency treatment tank, and a pressure sensor for monitoring the pressure value in the deastringency treatment tank; the detection range of the temperature sensor is 5°C to 135°C; and / or,

[0023] A gate valve is also provided at the outlet of the de-astringency treatment tank. The gate valve is a pneumatic valve, which includes a gate and a gate drive unit. The gate drive unit drives the gate to extend and retract to close and open the outlet of the de-astringency treatment tank.

[0024] Optional equipment for removing astringency from walnuts also includes:

[0025] The material conveying mechanism comprises: a conveyor belt feed port connected to the outlet of the de-astringency treatment tank through an expansion joint, a conveyor belt rotating under the drive shaft, and a conveyor belt baffle arranged at the outer peripheral side and end position of the conveyor belt; a collecting trough for collecting clean water or waste water is also arranged at the bottom of the conveyor belt;

[0026] The high-pressure gas flushing mechanism comprises: a high-pressure gas nozzle arranged on the conveying path of the conveyor belt, the high-pressure gas nozzle can adjust the inclination angle, and is used to spray high-pressure gas in the direction of the conveyor belt to remove the astringent residue on the surface of the material;

[0027] A vacuum temporary storage tank, wherein the interior of the vacuum temporary storage tank is a low-pressure environment to remove residual astringent substances in the material and reduce oxidation reactions; the vacuum temporary storage tank is connected to a vacuum pumping device.

[0028] Optionally, the conveyor belt baffle is further provided with an anti-splash net corresponding to the position of the conveyor belt, the opening rate of the anti-splash net is 40% to 70%, and the mesh size is 4mm to 8mm; and / or,

[0029] The material conveying mechanism further includes: a speed controller in communication with the conveyor belt to adjust the running speed of the conveyor belt; and / or,

[0030] The de-astringency treatment tank is a rectangular parallelepiped structure that matches the shape of the conveyor belt, and the feed port of the de-astringency treatment tank is a rectangular structure that corresponds to the walnut kernel placement platform; and / or,

[0031] The vacuum temporary storage tank is connected to the conveyor belt via a mounting track on the vacuum tank bracket; and the vacuum temporary storage tank is a rectangular parallelepiped structure; and / or,

[0032] The vacuum temporary storage tank is made of alkali-resistant stainless steel; the support frame for the deastringency equipment is made of stainless steel and has corrosion resistance and high load-bearing capacity; and / or,

[0033] A material guiding chute for allowing materials to enter the conveying track in the vacuum temporary storage tank is also provided at the connection position between the vacuum temporary storage tank and the material conveying mechanism.

[0034] The technical solution of the present invention has the following advantages:

[0035] 1. The equipment for removing astringency from walnuts provided by the present invention comprises:

[0036] A de-astringency tank, used for containing walnut kernels that need to be de-astringent;

[0037] A walnut kernel placement platform is arranged in the de-astringency treatment tank and is used to carry walnut kernels that need to be de-astringent;

[0038] The steam generating mechanism is connected with the de-astringency treatment tank and corresponds to the walnut kernel placing platform, and is used to provide high-temperature steam of 95° C. to 120° C. for 1 minute to 5 minutes to de-astringe the walnut kernels in the de-astringency treatment tank.

[0039] In the present invention, a steam generating mechanism is used to provide high-temperature steam of 95°C to 120°C to the walnut kernels in the de-astringency treatment tank for 1 to 5 minutes, thereby achieving de-astringency of the walnut kernels. Compared with traditional de-astringency methods such as hot water soaking, alkali treatment, and baking, the de-astringency time of the high-temperature steam de-astringency in the present invention is greatly shortened, and the processing efficiency is increased by more than 30%. At the same time, because the walnut kernel processing time is reduced and the steam temperature is accurately controlled, the protein and fat loss rate of the walnut kernels after treatment in the present invention is reduced to less than 3%.

[0040] 2. The equipment for removing astringency from walnuts provided by the present invention, the steam generating mechanism comprises: a steam pipeline, which is arranged below the walnut kernel placement platform, and the number of the steam pipelines is multiple and they are arranged in parallel with the walnut kernel placement platform; steam exhaust holes are staggeredly arranged in the length direction of the steam pipeline, the aperture range of the steam exhaust holes is 0.5mm to 2mm and they are evenly distributed, and the steam exhaust holes are arranged toward the walnut kernel to prevent excessive local temperature caused by concentrated steam injection.

[0041] In the present invention, the steam pipeline is arranged directly below the walnut kernel placement platform. In addition, the steam pipeline is provided with staggered steam exhaust holes, so that the steam can be evenly distributed in the tank body, ensuring uniform heating of the material in the steam environment. At the same time, the staggered design avoids concentrated steam spraying in a certain area, prevents local overheating, enables the steam to evenly cover the entire surface of the material in the tank, and evenly steam treats the walnut kernels to achieve the best de-astringency effect.

[0042] 3. The walnut de-astringency equipment provided by the present invention, wherein the walnut kernel placement platform is a walnut sieve plate;

[0043] The walnut sieve plate comprises: a placement platform composed of a plurality of sieve plate blades, a driving shaft arranged at the end of the sieve plate blade to drive the sieve plate blade to rotate, and a driving source for driving the driving shaft;

[0044] The sieve plate blades have a bearing position arranged in the horizontal direction of the de-astringency treatment tank to support the walnut kernels, and a discharge position arranged in the vertical direction of the de-astringency treatment tank to transfer the walnut kernels;

[0045] The sieve plate blades are provided with sieve holes to ensure that the steam passes through the walnut sieve plate and filters the walnut kernels.

[0046] In the present invention, a driving shaft is provided in the middle position of the sieve plate blades, thereby realizing the rotation function of the sieve plate blades. After the de-astringency treatment is completed, the walnut sieve plate rotates, and the material gradually slides from the top of the sieve plate to the conical bottom of the tank body, ensuring that the material smoothly enters the next step of the conveying process. The walnut sieve plate of the above structure can simply and reliably complete the automated conveying of walnut kernels. At the same time, the above sieve plate blades are designed to be multiple pieces in parallel, which can support the material while heating, avoid direct contact between the material and the bottom of the tank, and prevent overheating and local uneven de-astringency.

[0047] 4. In the walnut de-astringency equipment provided by the present invention, the sieve plate blades are arranged in a staggered manner to ensure that the walnut kernels are evenly spread. The sieve plate blades are arranged in a staggered manner to ensure that the walnut kernels are evenly spread without the problem of accumulation.

[0048] 5. The de-astringency equipment for walnuts provided by the present invention, the driving source includes: a gear arranged on the driving shaft, and a driving chain for driving the gear to rotate.

[0049] In the present invention, the screen plate blades are driven to rotate by the driving chains and gears that cooperate with each other, which has the advantages of small space occupation, simple and reliable structure.

[0050] 6. The de-astringency equipment for walnuts provided by the present invention also includes: a spraying mechanism, which is arranged in the de-astringency treatment tank, and is used to spray cold water on the walnut kernels in the de-astringency treatment tank to perform preliminary cleaning on the incoming walnut materials and remove surface impurities, dust and some water-soluble bitter substances; and after the walnut kernels are soaked in alkali solution and steam-treated, the alkali solution remaining on the surface of the walnut kernels is removed by the spraying mechanism.

[0051] In the present invention, the walnut kernels first enter the de-astringency treatment tank, and then the walnut kernels are sprayed with clean water through a spraying mechanism to comprehensively clean the surface of the material to remove external impurities, dust and some water-soluble bitter substances. This step can prepare for subsequent heat treatment and ensure that the material is clean and free of impurities. Moreover, the steam generating mechanism and the spraying mechanism in the present invention adopt an integrated de-astringency structure, which integrates alkali solution soaking, steam penetration and warm water soaking in the same tank body, reduces the transportation and secondary processing of materials, significantly reduces the breakage rate and nutrient loss of walnut kernels, and optimizes production efficiency.

[0052] 7. The de-astringency equipment for walnuts provided by the present invention, the spray mechanism includes: a rotating spray head arranged in the de-astringency treatment tank and located above the walnut kernel placement platform, the rotation angle of the rotating spray head covers 360 degrees, the rotating spray head is connected to the liquid supply pipe and is driven to rotate to spray clean water to the walnut kernels on the walnut kernel placement platform in all directions, and the water pressure range of the rotating spray head is 0.1MPa to 0.6MPa.

[0053] The spray head in the present invention is a rotary spray head, and is arranged at the top of the tank body of the de-astringency treatment tank. The rotary spray head can spray cold water in all directions to achieve cleaning work.

[0054] 8. The de-astringency equipment for walnuts provided by the present invention also includes: a sensor assembly, including: a temperature sensor arranged in the de-astringency treatment tank for detecting the temperature inside the tank body, a liquid level sensor for detecting the liquid level of the liquid medium in the de-astringency treatment tank, and a pressure sensor for monitoring the pressure value in the de-astringency treatment tank; the detection range of the temperature sensor is 5°C to 135°C.

[0055] In the present invention, through the above-mentioned temperature sensor, liquid level sensor and pressure sensor, the temperature, liquid level and pressure changes in the de-astringency treatment tank during the de-astringency treatment process can be monitored in real time to ensure that the equipment operates under the best working conditions, accurately control the amount of steam and water, and optimize the de-astringency effect.

[0056] 9. The de-astringency equipment for walnuts provided by the present invention is further provided with a gate valve at the outlet of the de-astringency treatment tank, and the gate valve comprises: a gate and a gate driving part; the gate driving part drives the gate to extend and retract to realize the closing and opening of the outlet of the de-astringency treatment tank.

[0057] The above-mentioned gate valve can stably and reliably control the opening and closing action of the outlet of the de-astringent treatment tank. Moreover, the above-mentioned gate drive unit can realize the automatic control of the outlet of the de-astringent treatment tank. At the same time, the above-mentioned gate valve can ensure the safety of equipment operation, prevent leakage and accidental shutdown, and is easy to maintain and clean, reducing daily maintenance costs.

[0058] 10. The equipment for removing astringency from walnuts provided by the present invention further comprises:

[0059] The material conveying mechanism comprises: a conveyor belt feed port connected to the outlet of the de-astringency treatment tank through an expansion joint, a conveyor belt rotating under the drive shaft, and a conveyor belt baffle arranged at the outer peripheral side and end position of the conveyor belt; a collecting trough for collecting clean water or waste water is also arranged at the bottom of the conveyor belt;

[0060] The high-pressure gas flushing mechanism comprises: a high-pressure gas nozzle arranged on the conveying path of the conveyor belt, the high-pressure gas nozzle can adjust the inclination angle, and is used to spray high-pressure gas in the direction of the conveyor belt to remove the astringent residue on the surface of the material;

[0061] A vacuum temporary storage tank, wherein the interior of the vacuum temporary storage tank is a low-pressure environment to remove residual astringent substances in the material and reduce oxidation reactions; the vacuum temporary storage tank is connected to a vacuum pumping device.

[0062] In the present invention, the expansion joint can facilitate operators to maintain and clean the equipment, reducing daily maintenance costs. In addition, the angle of the high-pressure gas nozzle can be adjusted to achieve all-round flushing of the material. High-pressure gas can thoroughly remove the astringent residues on the surface of the material to ensure thorough cleaning. At the same time, the vacuum temporary storage tank can further remove the residual astringent substances in the material, while reducing the occurrence of oxidation reactions and protecting the flavor and nutrition of the walnut kernels. At the same time, the de-astringency equipment in the present invention can complete automated control and continuous production: the automation and continuity of the entire de-astringency, flushing, and vacuum treatment processes greatly reduce manual intervention, reduce labor intensity, and improve production efficiency and product stability.

[0063] 11. In the de-astringent equipment for walnuts provided by the present invention, the conveyor belt baffle is also provided with an anti-splashing net corresponding to the position of the conveyor belt, the opening rate of the anti-splashing net is 40% to 70%, and the mesh size is 4mm to 8mm. The anti-splashing net can effectively prevent the material from splashing during the high-pressure gas flushing process.

[0064] 12. The de-astringency equipment for walnuts provided by the present invention, the material conveying mechanism further comprises: a speed controller connected to the conveyor belt for adjusting the running speed of the conveyor belt. The running speed of the conveyor belt can be effectively controlled by the speed controller to meet the processing requirements of different materials.

[0065] 13. The de-astringency equipment for walnuts provided by the present invention, the de-astringency treatment tank is a rectangular parallelepiped structure adapted to the shape of the conveyor belt, and the feed port of the de-astringency treatment tank is a rectangular structure corresponding to the walnut kernel placement platform. In the present invention, the feed port of the de-astringency treatment tank adopts a rectangular design and is smoothly connected to the conveyor belt, which can effectively reduce the possibility of material accumulation and jamming, and ensure the continuity and stability of feeding.

[0066] 14. In the equipment for removing astringency from walnuts provided by the present invention, the vacuum temporary storage tank is connected to the conveyor belt via a mounting track on a vacuum tank bracket; and the vacuum temporary storage tank is a rectangular parallelepiped structure. A conveyor belt whose length can be adjusted as needed is arranged in the vacuum temporary storage tank of the rectangular parallelepiped structure, which can effectively ensure that the walnut kernel material is evenly distributed under vacuum. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0068] Figure 1 A schematic diagram of the three-dimensional structure of the equipment for removing astringency from walnuts provided by the present invention;

[0069] Figure 2 A schematic diagram of the three-dimensional structure of the de-astringency treatment tank provided by the present invention installed on a support frame;

[0070] Figure 3 A schematic diagram of the three-dimensional structure of the sieve plate blades constituting the walnut sieve plate provided by the present invention;

[0071] Figure 4 A schematic diagram of the three-dimensional structure of the material conveying mechanism provided by the present invention;

[0072] Figure 5 A three-dimensional structural schematic diagram of the connection structure between the material conveying mechanism and the vacuum temporary storage tank provided by the present invention;

[0073] Figure 6 This is a schematic diagram of the three-dimensional structure of the plug valve provided by the present invention.

[0074] Description of reference numerals:

[0075] 1-deastringency treatment tank; 2-steam pipeline; 3-walnut screen plate; 4-screen plate blades; 5-driving shaft; 6-rotating spray head; 7-liquid supply pipe; 8-gate valve; 9-gate; 10-gate drive unit; 11-material conveying mechanism; 12-expansion joint; 13-conveyor belt feed port; 14-driving shaft; 15-conveyor belt; 16-conveyor belt baffle; 17-clean water collection tank; 18-high-pressure gas nozzle; 19-vacuum temporary storage tank; 20-anti-splash net; 21-vacuum tank bracket; 22-installation track; 23-support frame; 24-material guide chute; 25-steam supply pipe. DETAILED DESCRIPTION

[0076] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0077] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0078] Example 1

[0079] See also Figure 1 , Figure 1 A schematic diagram of the three-dimensional structure of the astringency removal equipment for walnuts in an embodiment of the present invention is shown.

[0080] This embodiment provides a device for removing astringency from walnuts, comprising:

[0081] The de-astringency treatment tank 1 is used to accommodate walnut kernels that need to be de-astringent; the de-astringency treatment tank 1 is a rectangular parallelepiped structure that matches the shape of the conveyor belt 15 used to convey materials, and the feed port of the de-astringency treatment tank 1 is a rectangular structure that corresponds to the walnut kernel placement platform;

[0082] A walnut kernel placement platform is provided in the de-astringency treatment tank 1 and is used to carry walnut kernels that need to be de-astringent;

[0083] The steam generating mechanism is connected to the de-astringency treatment tank 1 through the steam supply pipe 25 and corresponds to the walnut kernel placement platform, and is used to provide high-temperature steam of 95°C to 120°C to the walnut kernels in the de-astringency treatment tank 1 for 1 minute to 5 minutes to de-astringe the walnut kernels. Figure 2The steam generating mechanism shown in the figure specifically comprises: a steam pipeline 2, which is arranged below the walnut kernel placement platform, the number of the steam pipelines 2 is 8 and they are arranged in parallel with the walnut kernel placement platform; steam exhaust holes are staggeredly arranged in the length direction of the steam pipeline 2, the aperture range of the steam exhaust holes is 0.5 mm to 2 mm and they are evenly distributed, and the steam exhaust holes are arranged toward the walnut kernel placement to prevent the local temperature from being too high due to the concentrated steam injection;

[0084] The spray mechanism is arranged in the de-astringency treatment tank 1, and is used to spray cold water onto the walnut kernels in the de-astringency treatment tank 1, so as to perform preliminary cleaning on the incoming walnut material, remove surface impurities, dust and some water-soluble bitter substances; and, after the walnut kernels are soaked in alkali solution and steam-treated, the alkali solution remaining on the surface of the walnut kernels is removed by the spray mechanism. The steam generating mechanism and the spray mechanism in the present invention adopt an integrated de-astringency structure, which integrates alkali solution soaking, steam penetration and warm water soaking in the same tank body, thereby reducing the transportation and secondary processing of materials, significantly reducing the breakage rate and nutrient loss of walnut kernels, and optimizing production efficiency. In this embodiment, Figure 2 The spray mechanism shown comprises: a rotating spray head 6 arranged in the de-astringency treatment tank 1 and located above the walnut kernel placement platform, the rotating angle of the rotating spray head 6 covers 360 degrees, the rotating spray head 6 is connected to the liquid supply pipe 7 and is driven to rotate to spray clean water on the walnut kernels on the walnut kernel placement platform in all directions, and the water pressure range of the rotating spray head 6 is 0.35MPa;

[0085] The sensor assembly includes: a temperature sensor for detecting the temperature inside the deastringency treatment tank 1, a liquid level sensor for detecting the liquid level of the liquid medium in the deastringency treatment tank 1, and a pressure sensor for monitoring the pressure value in the deastringency treatment tank 1; in addition, the detection range of the temperature sensor is 5°C to 135°C;

[0086] The support frame 23 is used to support the de-astringency equipment. The support frame 23 is made of stainless steel and has corrosion resistance and high load-bearing capacity.

[0087] In this embodiment, if Figure 2 The three-dimensional structure diagram of the de-astringency treatment tank is shown. And, Figure 3 The walnut sieve plate is a three-dimensional structure diagram of the sieve plate blades constituting the walnut sieve plate. The walnut kernel placement platform is the walnut sieve plate 3;

[0088] The walnut sieve plate 3 includes: a placement platform composed of a plurality of sieve plate blades 4, a driving shaft 5 arranged at the end of the sieve plate blade 4 to drive the sieve plate blade 4 to rotate, and a driving source for driving the driving shaft 5;

[0089] The sieve plate blades 4 have a bearing position arranged in the horizontal direction of the de-astringency treatment tank 1 to support the walnut kernels, and a discharge position arranged in the vertical direction of the de-astringency treatment tank 1 to transfer the walnut kernels; and the sieve plate blades 4 are arranged in a staggered manner to spread the walnut kernels evenly;

[0090] The sieve plate blades 4 are provided with sieve holes with a size of 4 mm×32 mm, and adjacent sieve holes are spaced 4 mm apart to ensure that steam passes through the walnut sieve plate 3 and filters the walnut kernels.

[0091] Meanwhile, the driving source includes: a gear disposed on the driving shaft 5, and a driving chain for driving the gear to rotate. The driving chain and gear cooperate with each other to drive the screen plate blades 4 to rotate, which has the advantages of small space occupation, simple and reliable structure.

[0092] In this embodiment, if Figure 6 The schematic diagram of the three-dimensional structure of the gate valve is shown. The gate valve 8 is arranged at the outlet of the de-astringency treatment tank 1. The gate valve 8 is a pneumatic valve, which includes: a gate 9 and a gate drive 10; the gate drive 10 drives the gate 9 to extend and retract to realize the closing and opening of the outlet of the de-astringency treatment tank 1.

[0093] In this embodiment, if Figure 1 The three-dimensional structure diagram of the de-astringency equipment for walnuts is shown. The de-astringency equipment for walnuts also includes:

[0094] Material conveying mechanism 11, such as Figure 4 The three-dimensional structural diagram of the material conveying mechanism shown. It includes: a conveyor belt feed port 13 connected to the outlet of the de-astringency treatment tank 1 through an expansion joint 12, a conveyor belt 15 that rotates under the drive shaft 14, and a conveyor belt baffle 16 arranged on the outer peripheral side and end position of the conveyor belt 15; a collecting trough 17 for collecting clean water or waste water is also arranged at the bottom of the conveyor belt 15. In addition, an anti-splash net 20 corresponding to the position of the conveyor belt 15 is also arranged on the conveyor belt baffle 16, and the opening rate of the anti-splash net 20 is 40% to 70%, and the mesh size is 4mm to 8mm; the material conveying mechanism 11 also includes: a speed controller connected to the conveyor belt 15 for adjusting the running speed of the conveyor belt 15;

[0095] The high-pressure gas flushing mechanism comprises: a high-pressure gas nozzle 18 arranged on the conveying path of the conveyor belt 15, wherein the high-pressure gas nozzle 18 can adjust the inclination angle and is used to spray high-pressure gas in the direction of the conveyor belt 15 to remove astringent residues on the surface of the material;

[0096] Vacuum temporary storage tank 19, such as Figure 5The three-dimensional structural diagram of the connection structure between the material conveying mechanism and the vacuum storage tank is shown. The vacuum storage tank 19 is made of alkali-resistant stainless steel, and its interior is a low-pressure environment to remove residual astringent substances in the material and reduce oxidation reactions; the vacuum storage tank 19 is connected to the vacuum pumping equipment. The above-mentioned vacuum storage tank 19 is connected to the conveyor belt 15 through the mounting track 22 on the vacuum tank bracket 21; and the vacuum storage tank 19 is a rectangular structure. In order to ensure that the material enters the conveying track of the vacuum storage tank 19 evenly, the connection position between the vacuum storage tank 19 and the material conveying mechanism 11 is also provided with a material guide chute 24 for the material to enter the conveying track in the vacuum storage tank 19.

[0097] Of course, the present invention does not specifically limit the specific structure of the steam generating mechanism. In other embodiments, the steam generating mechanism can also be arranged above the walnut kernel placement platform to spray steam toward the walnut kernel placement platform through the exhaust hole. Alternatively, steam is sprayed toward the walnut kernel placement platform in other ways.

[0098] Of course, the present invention does not impose any specific restrictions on the specific structure of the walnut kernel placement platform. In other embodiments, the walnut kernel placement platform can also be a rotating platform composed of a screen plate blade 4, or a switch platform that can be opened and closed from the middle, and other structures.

[0099] Of course, the present invention does not impose any specific restrictions on the specific size of the sieve holes arranged on the sieve plate blade 4. In other embodiments, the size of the sieve holes on the sieve plate blade 4 ranges from 3mm to 4mm×24mm to 32mm, and the interval between adjacent sieve holes is 3mm to 4mm. The above sieve hole size can also be adjusted to other sizes as needed.

[0100] Of course, the present invention does not impose any specific restrictions on the location and specific structure of the spray mechanism. In other embodiments, the spray mechanism is separately arranged in the spray space of the previous process of the de-astringency treatment tank 1, so that the spray mechanism and the steam generating mechanism are respectively arranged in two different workstations.

[0101] Of course, the present invention does not impose any specific limitation on the number of steam pipelines 2. In other embodiments, the number of steam pipelines 2 can be adjusted to 6-10 or other numbers as needed.

[0102] Of course, the present invention does not impose any specific limitation on the rotation angle of the rotary spray head 6. In other embodiments, the rotation angle of the rotary spray head 6 can be adjusted to other spray angle ranges that can be covered as needed.

[0103] Of course, the present invention does not impose any specific limitation on the water pressure range of the rotary spray head 6. In other embodiments, the water pressure range of the rotary spray head 6 is 0.1 MPa to 0.6 MPa.

[0104] Of course, the present invention does not impose any specific restrictions on the specific driving method of the gate valve 8. In other embodiments, the gate valve 8 can also be driven by electric control or other methods to achieve closing and opening of the outlet of the deastringency treatment tank 1.

[0105] Of course, the present invention does not impose any specific restrictions on the locations of the liquid supply pipe 7 and the steam supply pipe 25. In other embodiments, the locations of the liquid supply pipe 7 and the steam supply pipe 25 can be replaced, or the liquid supply pipe 7 and the steam supply pipe 25 can be arranged at other locations.

[0106] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A device for removing astringency from walnuts, characterized in that: include: A de-astringency treatment tank (1), used for containing walnut kernels to be de-astringent; A walnut kernel placement platform is arranged in the de-astringency treatment tank (1) and is used to carry walnut kernels that need to be de-astringent; The steam generating mechanism is connected to the de-astringency treatment tank (1) and corresponds to the walnut kernel placement platform, and is used to provide high-temperature steam of 95° C. to 120° C. for 1 minute to 5 minutes to de-astringe the walnut kernels in the de-astringency treatment tank (1).

2. The equipment for removing astringency from walnuts according to claim 1, characterized in that: The steam generating mechanism comprises: A steam pipeline (2) is arranged below the walnut kernel placement platform, the number of the steam pipelines (2) is multiple and they are arranged parallel to the walnut kernel placement platform; steam exhaust holes are staggered in the length direction of the steam pipeline (2), and the steam exhaust holes are arranged toward the walnut kernel placement platform.

3. The equipment for removing astringency from walnuts according to claim 1 or 2, characterized in that: The walnut kernel placement platform is a walnut sieve plate (3); The walnut sieve plate (3) comprises: a placement platform composed of a plurality of sieve plate blades (4), a drive shaft (5) arranged at the end of the sieve plate blades (4) to drive the sieve plate blades (4) to rotate, and a drive source for driving the drive shaft (5); The sieve plate blades (4) have a bearing position arranged in the horizontal direction of the de-astringency treatment tank (1) for supporting the walnut kernels, and a discharge position arranged in the vertical direction of the de-astringency treatment tank (1) for transferring the walnut kernels; The sieve plate blades (4) are provided with sieve holes to ensure that the steam passes through the walnut sieve plate (3) and filters the walnut kernels.

4. The equipment for removing astringency from walnuts according to claim 3, characterized in that: The sieve plate blades (4) are arranged in a staggered manner so that the walnut kernels are evenly spread; and / or, The size of the sieve holes on the sieve plate blade (4) is 3 mm to 4 mm×24 mm to 32 mm, and the interval between adjacent sieve holes is 3 mm to 4 mm.

5. The equipment for removing astringency from walnuts according to claim 3, characterized in that: The driving source comprises: a gear arranged on the driving shaft (5), and a driving chain for driving the gear to rotate.

6. The equipment for removing astringency from walnuts according to claim 1, characterized in that: Also includes: The spray mechanism is arranged in the de-astringency treatment tank (1) and is used to spray cold water onto the walnut kernels in the de-astringency treatment tank (1) to perform preliminary cleaning on the incoming walnut material and remove surface impurities, dust and some water-soluble bitter substances; and after the walnut kernels are soaked in alkali solution and steam treated, the alkali solution remaining on the surface of the walnut kernels is removed by the spray mechanism.

7. The equipment for removing astringency from walnuts according to claim 6, characterized in that: The spray mechanism comprises: a rotating spray head (6) arranged in the de-astringency treatment tank (1) and located above the walnut kernel placement platform; the rotating angle of the rotating spray head (6) covers 360 degrees; the rotating spray head (6) is connected to a liquid supply pipe (7) and is driven to rotate so as to spray clean water on the walnut kernels on the walnut kernel placement platform in all directions; the water pressure range of the rotating spray head (6) is 0.1MPa to 0.6MPa.

8. The equipment for removing astringency from walnuts according to claim 6, characterized in that: Also includes: A sensor assembly, comprising: a temperature sensor arranged in the de-astringency treatment tank (1) for detecting the temperature inside the tank, a level sensor for detecting the liquid level of the liquid medium in the de-astringency treatment tank (1), and a pressure sensor for monitoring the pressure value in the de-astringency treatment tank (1); the detection range of the temperature sensor is 5° C. to 135° C.; and / or, A gate valve (8) is also provided at the outlet of the de-astringency treatment tank (1), and the gate valve (8) comprises a gate (9) and a gate drive unit (10); the gate drive unit (10) drives the gate (9) to extend and retract to achieve closing and opening of the outlet of the de-astringency treatment tank (1).

9. The equipment for removing astringency from walnuts according to claim 1, characterized in that: Also includes: The material conveying mechanism (11) comprises: a conveyor belt feed port (13) connected to the outlet of the de-astringency treatment tank (1) through an expansion joint (12), a conveyor belt (15) rotating under the drive of a driving shaft (14), and a conveyor belt baffle (16) arranged at the outer peripheral side and end positions of the conveyor belt (15); a collecting trough (17) for collecting clean water or waste water is also arranged at the bottom of the conveyor belt (15); The high-pressure gas flushing mechanism comprises: a high-pressure gas nozzle (18) arranged on the conveying path of the conveyor belt (15), wherein the high-pressure gas nozzle (18) can be adjusted in inclination angle and is used to spray high-pressure gas in the direction of the conveyor belt (15) to remove astringent residues on the surface of the material; A vacuum temporary storage tank (19), wherein the interior of the vacuum temporary storage tank (19) is a low-pressure environment to remove residual astringent substances in the material and reduce oxidation reactions; the vacuum temporary storage tank (19) is connected to a vacuum pumping device.

10. The equipment for removing astringency from walnuts according to claim 9, characterized in that: The conveyor belt baffle (16) is also provided with an anti-splash net (20) corresponding to the position of the conveyor belt (15); and / or, The material conveying mechanism (11) further comprises: a speed controller communicatively connected to the conveyor belt (15) to adjust the running speed of the conveyor belt (15); and / or, The de-astringency treatment tank (1) is a rectangular parallelepiped structure that matches the shape of the conveyor belt (15); the feed inlet of the de-astringency treatment tank (1) is a rectangular structure that corresponds to the walnut kernel placement platform; and / or, The vacuum temporary storage tank (19) is connected to the conveyor belt (15) via a mounting track (22) on a vacuum tank bracket (21); and the vacuum temporary storage tank (19) is a rectangular parallelepiped structure; and / or, The vacuum temporary storage tank (19) is made of alkali-resistant stainless steel; the support frame (23) for the deastringency equipment is made of stainless steel and has corrosion resistance and high load-bearing capacity; and / or, A material guide chute (24) for allowing materials to enter a conveying track in the vacuum temporary storage tank (19) is also provided at the connection position between the vacuum temporary storage tank (19) and the material conveying mechanism (11).

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