Heat preservation airtight device for granary ventilation opening

Abstract

The utility model provides a heat preservation airtight device for granary ventilation openings, which relates to the technical field of granary ventilation and comprises a plurality of airtight structures in one-to-one correspondence with granary ventilation openings. Each airtight structure comprises a first ventilation bin, a first sleeve and an air bag, the side, close to the bin body, of the first ventilation bin is communicated with the bin body, the end, close to the first ventilation bin, of the first sleeve is connected with the first ventilation bin in an inserted mode, an inserted seam is formed, and the first sleeve is fixed to the first ventilation bin through cement pouring; the air bag is sequentially composed of a first bag body, a second bag body and a third bag body and is in a capsule shape, the air bag is embedded in the first ventilation bin and the first sleeve, the second bag body of the air bag is located at the inserting seam, the problem that in the prior art, a heat preservation material in a heat preservation sealed interlayer adopted by a granary is prone to aging is solved, and the heat preservation sealing performance of the granary is improved.

Description

Technical Field

[0001] This utility model relates to the field of grain warehouse ventilation technology, specifically to a heat-insulating and airtight device for grain warehouse ventilation openings. Background Technology

[0002] Low-temperature grain storage is a promising method in modern grain storage technology. It keeps the grain at a low temperature, which can inhibit the respiration of the grain, reduce dry matter loss, slow down the aging and quality deterioration of the grain, maintain the freshness and edibility of the grain, and achieve the goal of safe grain storage.

[0003] However, during the summer, the temperature of the grain pile gradually rises due to the high temperatures outside. Because of the grain storage structure, the surface and bottom layers of the grain pile are in the most contact with the outside environment, and these areas heat up most rapidly. After the outer edges of the grain pile heat up, the quality of the grain in this area rapidly declines, and due to the large temperature difference, the risk of condensation, mold, and insect infestation increases.

[0004] Currently, the traditional method is to install insulation layers or seal the ventilation openings. However, due to problems such as aging of insulation materials and poor sealing effect, it is often difficult to effectively prevent heat from outside the grain warehouse from entering the warehouse in summer. Therefore, how to improve the insulation and airtightness of the ventilation openings of grain warehouses is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a heat-insulating and airtight device for grain warehouse ventilation openings, which solves the problem of easy aging of insulation materials in the heat-insulating and airtight partitions used in grain warehouses in the prior art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] In this utility model, the heat-insulating and airtight device for the ventilation opening of the grain warehouse includes multiple airtight structures that correspond one-to-one with the ventilation opening of the warehouse body.

[0010] Each of the aforementioned airtight structures includes a ventilation chamber, a sleeve, and an air bladder. The ventilation chamber is connected to the chamber body on the side closest to the chamber body. The sleeve is inserted into the ventilation chamber and forms an insertion joint at the end closest to the ventilation chamber. The sleeve is fixed to the ventilation chamber by cement pouring.

[0011] The airbag is composed of three parts in sequence: one part, two parts, and three parts, and is in the shape of a capsule. The airbag is embedded in the ventilation chamber and the sleeve, and the second part of the airbag is located at the joint.

[0012] A three-way valve is provided on the first bladder body. One end of the three-way valve is connected to the air bladder through a connecting pipe. A pressure gauge is provided on one end of the three-way valve away from the air bladder, and an air pump passage is provided on the other end for pumping air into the air bladder so that the air bladder inflates and fits tightly against the inner wall of the first sleeve and the connection with the first ventilation chamber.

[0013] Furthermore, a sealing cap is installed at the end of the sleeve that is away from the ventilation chamber.

[0014] The sealing cover is sealed to the sleeve by a sealing ring;

[0015] The sealing ring is embedded at the end of the sleeve that is away from the ventilation chamber.

[0016] Furthermore, the silo body is made of cement;

[0017] The ventilation chamber is constructed by pouring cement.

[0018] The first sleeve is made of alloy material.

[0019] Furthermore, a cylindrical section is connected to the ventilation chamber and the sleeve by a cement pouring process.

[0020] The cylinder is made of an alloy;

[0021] Part of the second capsule is fitted to the inner wall of the first sleeve, and the remaining part is fitted to the inner wall of the cylinder.

[0022] Furthermore, a rubber sleeve is fitted onto the second body of the airbag.

[0023] Furthermore, a pull ring is provided on the first part of the bladder.

[0024] Furthermore, the thickness of the airbag is 3mm;

[0025] The outer diameter of the upper bladder body in its normal state is 55.5 cm;

[0026] The inner diameter of the first sleeve is 56cm.

[0027] (III) Beneficial Effects

[0028] This utility model provides a heat-insulating and airtight device for grain warehouse ventilation openings. Compared with the prior art, it has the following advantages:

[0029] By setting up an airtight structure, which consists of a ventilation chamber, a sleeve, and an airbag, and combining it with an air pump venting channel, the airbag is inflated so that it fits tightly against the inner wall of the sleeve. This achieves a seal and insulation effect on the grain silo ventilation opening. The pressure inside the airbag is monitored in real time by a pressure gauge. Once the airbag is in close contact with the inside of the sleeve, the inflation is stopped once the designed pressure value is reached. Closing the three-way valve maintains the pressure inside the airbag, thus ensuring a better seal and insulation effect on the grain silo ventilation opening.

[0030] Furthermore, when setting up the airbag, the second airbag body is embedded in the joint between the first sleeve and the first ventilation chamber to seal the joint, thereby improving the overall sealing and insulation effect. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the structure for installing a heat-insulating and airtight device on the grain silo body;

[0033] Figure 2 This is a schematic diagram of the existing grain warehouse ventilation openings;

[0034] Figure 3 for Figure 1 A schematic diagram of the heat-insulating and airtight device for ventilation openings in COFCO warehouses;

[0035] Figure 4 for Figure 3 Schematic diagram of the structure of the central airbag;

[0036] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0037] Figure 6 for Figure 3 Enlarged view of point B in the middle;

[0038] Figure 7 for Figure 3 A schematic diagram of the structure of the central airbag in another embodiment.

[0039] Figure label:

[0040] 1. Chamber body; 2. Airtight structure; 20. Ventilation chamber one; 201. Cylinder; 21. Sleeve one; 211. Insert joint; 22. Airbag; 221. Airbag body one; 222. Airbag body two; 223. Airbag body three; 224. Rubber sleeve; 23. Sealing cover one; 231. Sealing ring; 24. Three-way valve; 241. Pressure gauge; 242. Air pump vent; 3. Ventilation chamber two; 4. Sleeve two; 5. Sealing cover two. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0042] This application provides a heat-insulating and airtight device for grain warehouse ventilation openings, which solves the problem of easy aging of insulation materials in the heat-insulating and airtight partitions used in grain warehouses in the prior art, thereby improving the heat insulation and sealing performance of grain warehouses.

[0043] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0044] like Figure 2 As shown, in the prior art, the ventilation opening is sealed by setting up a second ventilation chamber 3, a second sleeve 4 and a second sealing cover 5. The second sealing cover 25 is used to close and open the second sleeve 24, and insulation material is set inside the second sleeve 24 for sealing and insulation. However, due to the aging of the insulation material, problems such as poor sealing effect are easy to occur, and it is often difficult to effectively prevent heat from outside the grain warehouse from entering the grain warehouse in summer.

[0045] Research has found that, for example Figure 1 , Figures 3-7 As shown, by setting up an airtight structure, the airtight structure is set up in the form of a ventilation chamber, a sleeve, and an airbag. Combined with the air pump vent, the airbag is inflated so that it fits tightly against the inner wall of the sleeve. This achieves airtight sealing and heat preservation of the grain silo ventilation opening. The pressure inside the airbag is monitored in real time by a pressure gauge. After the airbag fits tightly against the inside of the sleeve, the inflation can be stopped once the corresponding pressure value is reached, according to the design pressure value of the airbag. Closing the three-way valve can maintain the pressure inside the airbag, allowing the airbag to achieve a better sealing and heat preservation effect on the grain silo ventilation opening.

[0046] Furthermore, when setting up the airbag, the second airbag body is embedded in the joint between the first sleeve and the first ventilation chamber to seal the joint, which can improve the overall sealing and heat preservation effect.

[0047] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0048] Example of this application:

[0049] like Figure 1 , Figures 3-6 As shown, a heat-insulating and airtight device for a grain warehouse ventilation opening includes multiple airtight structures 2 that correspond one-to-one with the ventilation openings of the warehouse body 1.

[0050] Each of the airtight structures 2 includes a ventilation chamber 20, a sleeve 21, and an airbag 22. The ventilation chamber 20 is connected to the chamber body 1 on the side near the chamber body 1. The sleeve 21 is inserted into the ventilation chamber 20 at the end near the ventilation chamber 20 and forms an insertion seam 211. The sleeve 21 is fixed to the ventilation chamber 20 by cement pouring.

[0051] The airbag 22 is composed of a first airbag 221, a second airbag 222 and a third airbag 223 in sequence, and is in the shape of a capsule. The airbag 22 is embedded in the ventilation chamber 20 and the sleeve 21, and the second airbag 222 is located at the insertion joint 211.

[0052] A three-way valve 24 is provided on the bladder body 221. One end of the three-way valve 24 is connected to the airbag 22 through a connecting pipe. A pressure gauge 241 is provided on one end of the three-way valve 24 away from the airbag 22, and an air pump passage 242 is provided on the other end. This is used to pump air into the airbag 22 so that the airbag 22 inflates and fits tightly against the inner wall of the sleeve 21 and the connection with the ventilation chamber 20.

[0053] It should be noted that in this application, the ventilation chamber 20 and the sleeve 21 are connected to the ventilation openings on the grain storage body 1 to form a ventilation structure, and ventilation is carried out through the ventilation openings formed by the ventilation structure.

[0054] By setting up an airtight structure 2, which is configured as a ventilation chamber 20, a sleeve 21, and an airbag 22, and combined with an air pump vent 242, the airbag 22 is inflated so that it fits tightly against the inner wall of the sleeve 21, thus achieving airtight insulation of the grain silo ventilation opening. The pressure inside the airbag 22 is monitored in real time by a pressure gauge 241. After the airbag 22 fits tightly against the inside of the sleeve 21, the inflation can be stopped once the corresponding pressure value is reached, according to the design pressure value of the airbag. Closing the three-way valve 24 can maintain the pressure inside the airbag 22, so that the airbag 22 can achieve a better sealing and insulation effect on the grain silo ventilation opening.

[0055] When setting up the airbag 22, the second airbag body 222 of the airbag 22 is embedded in the joint 211 of the sleeve 21 and the ventilation chamber 20 to seal the joint 211, so as to improve the overall sealing and heat preservation effect.

[0056] like Figure 3 and Figure 6 As shown, a sealing cap 23 is installed at the end of the sleeve 21 away from the ventilation chamber 20;

[0057] The sealing cap 23 is sealed to the sleeve 21 by the sealing ring 231;

[0058] The sealing ring 231 is embedded at the end of the sleeve 21 that is away from the ventilation chamber 20.

[0059] Specifically, the sealing cover 23 is rotatably connected to the sleeve 21 to realize the opening and closing of the sealing cover 23, and is fastened to the sleeve 21 by a buckle.

[0060] Alternatively, the sealing cover 23 can be installed using other existing installation methods, and the installation method of the sealing cover 23 will not affect the implementation of this application.

[0061] By setting a sealing cover 23 and a sealing ring 231, a secondary seal is achieved after the airbag 22 is sealed and insulated, thereby improving the overall sealing and heat preservation effect of the heat preservation and airtight device.

[0062] like Figure 3 As shown, in one embodiment:

[0063] When the grain silo body 1 is a cement grain silo:

[0064] The silo body 1 is made of cement;

[0065] The ventilation chamber 20 is constructed by pouring cement.

[0066] The sleeve 21 is made of alloy material.

[0067] By setting the ventilation chamber 20 to be made of cement and the sleeve 21 to be made of alloy material, and fixing the sleeve 21 and the ventilation chamber 20 to be made of cement, it is easy to install the sleeve 21 to the cement-cast chamber 1 through the ventilation chamber 20. Compared with the sleeve 21 installed by bolts, the cement-cast sleeve 21 has better stability and sealing performance. Therefore, restricting the materials of the ventilation chamber 20 and the sleeve 21 can better fix the sleeve 21 and improve the sealing and heat insulation performance of the sleeve 21 installed with the chamber 1.

[0068] like Figure 3 and Figure 5As shown, based on the above-mentioned grain silo body 1 being a cement grain silo:

[0069] The connection between the ventilation chamber 20 and the sleeve 21 is made of cement and connected by a cylindrical tube 201.

[0070] The cylinder 201 is made of an alloy;

[0071] Part of the second capsule 222 is fitted with the inner wall of the first sleeve 21, and the remaining part is fitted with the inner wall of the cylinder 201.

[0072] By setting up the cylinder 201, when the ventilation chamber 20 is formed by concrete pouring, the airbag 22 is in contact with the cylinder 201 inside the ventilation chamber 20 when it is sealed, reducing the friction caused by the direct contact between the airbag 22 and the concrete ventilation chamber 20.

[0073] It should be noted that when setting up the thermal insulation and airtight device, the design of a cylindrical 201 should be considered comprehensively based on actual needs.

[0074] like Figure 7 As shown, a rubber sleeve 224 is fitted onto the body 222 of the airbag 22.

[0075] The rubber sleeve 224 facilitates the transportation of the airbag 22 and protects the airbag 22.

[0076] Specifically, in practical applications:

[0077] The thickness of the airbag 22 is 3mm;

[0078] The outer diameter of the upper body 222 of the airbag 22 in its normal state is 55.5 cm;

[0079] The inner diameter of the sleeve 21 is 56 cm.

[0080] The airbag body 221 is provided with a pull ring, which makes it easy to pull the airbag 22 out of the sleeve 21 and facilitate the disassembly of the airbag 22.

[0081] During operation, the thermal insulation and airtight device is set up in a suitable position around the bottom of the chamber 1. The ventilation chamber 20 is cast into a suitable position in the chamber 1 and fixed. The sleeve 21 is fixed to the ventilation chamber 20 by casting to form the ventilation opening of the chamber 1. The air bag 22 is embedded in the sleeve 21 to seal the ventilation opening.

[0082] When the airbag 22 is installed, the second airbag body 222 on the airbag 22 is located at the joint 211 between the sleeve 21 and the ventilation chamber 20.

[0083] Next, open the valve on the three-way valve 24 and use the air pump to inflate the airbag 22 through the air pump vent 242. During the inflation process, the pressure inside the airbag 22 can be monitored in real time by the pressure gauge 241 connected to the three-way valve 24. When the air pressure reaches about 0.03 MPa (the specific pressure can be determined according to the airbag design pressure, generally 0.03 MPa is sufficient for use), you can stop the inflation and close the valve on the three-way valve 24 to maintain the pressure inside the airbag 22. At this time, after the airbag 22 is inflated, it fits tightly against the ventilation inner wall of the heat preservation and airtight device, which can completely isolate the air circulation between the inside and outside of the grain silo and prevent heat from the outside of the grain silo from being transferred into the silo. After that, close the sealing cover 23 at the vent to achieve the heat preservation and airtight effect.

[0084] In daily work, the gas pressure inside the airbag 22 can be checked once a month. If the pressure is insufficient, it can be replenished in time. The operation is simple and quick.

[0085] Comparative analysis shows that using this device can reduce heat transfer into the grain silo by more than 80% compared to not using it, effectively slowing down the aging and quality deterioration of the grain. The risk of condensation, mold, and insect infestation in the grain in this area is greatly reduced. It is low in cost, simple and easy to operate, reusable, and convenient to inspect and maintain, making it highly practical and worthy of promotion.

[0086] In summary, compared with existing technologies, it has the following beneficial effects:

[0087] 1. By setting up an airtight structure 2, which is configured as a ventilation chamber 20, a sleeve 21, and an airbag 22, and combined with the air pump ventilation channel 242, the airbag 22 is inflated so that it fits tightly against the inner wall of the sleeve 21, thus achieving airtight insulation of the grain silo ventilation opening. The pressure inside the airbag 22 is monitored in real time by the pressure gauge 241. After the airbag 22 fits tightly against the inside of the sleeve 21, the inflation can be stopped once the corresponding pressure value is reached, according to the design pressure value of the airbag. The pressure inside the airbag 22 can be maintained by closing the three-way valve 24, so that the airbag 22 can achieve a better sealing and insulation effect on the grain silo ventilation opening.

[0088] 2. When setting the airbag 22, the second airbag body 222 of the airbag 22 is embedded in the joint 211 of the sleeve 21 and the ventilation chamber 20 to seal the joint 211, so as to make the overall sealing and heat preservation effect better.

[0089] 3. By setting the ventilation chamber 20 to be made of cement and the sleeve 21 to be made of alloy material, and fixing the sleeve 21 and the ventilation chamber 20 to the cement, it is easy to install the sleeve 21 to the cement-cast chamber 1 through the ventilation chamber 20. Compared with the sleeve 21 installed by bolts, the cement-cast sleeve 21 has better stability and sealing performance. Therefore, restricting the materials of the ventilation chamber 20 and the sleeve 21 can better fix the sleeve 21 and improve the sealing and heat insulation performance of the sleeve 21 installed with the chamber 1.

[0090] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0091] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heat-insulating and airtight device for a grain warehouse ventilation opening, characterized in that, Includes multiple airtight structures (2) that correspond one-to-one with the ventilation openings of the silo (1); Each of the airtight structures (2) includes a ventilation chamber (20), a sleeve (21) and an airbag (22). The ventilation chamber (20) is connected to the chamber body (1) on the side closest to the chamber body (1). The sleeve (21) is inserted into the ventilation chamber (20) at the end closest to the ventilation chamber (20) and forms an insertion seam (211). The sleeve (21) is fixed to the ventilation chamber (20) by cement pouring. The airbag (22) is composed of a first body (221), a second body (222) and a third body (223) in sequence, and is in the shape of a capsule. The airbag (22) is embedded in the ventilation chamber (20) and the sleeve (21), and the second body (222) of the airbag (22) is located at the insertion seam (211). A three-way valve (24) is provided on the first bladder (221). One end of the three-way valve (24) is connected to the airbag (22) through a connecting pipe. A pressure gauge (241) is provided on one end of the three-way valve (24) away from the airbag (22), and an air pump passage (242) is provided on the other end. This is used to pump air into the airbag (22) so that the airbag (22) inflates and fits tightly against the inner wall of the first sleeve (21) and the connection with the first ventilation chamber (20).

2. The heat-insulating and airtight device for grain warehouse ventilation openings as described in claim 1, characterized in that, A sealing cap (23) is installed at the end of the sleeve (21) away from the ventilation chamber (20); The sealing cap (23) is sealed to the sleeve (21) by a sealing ring (231); The sealing ring (231) is embedded at the end of the sleeve (21) away from the ventilation chamber (20).

3. A heat-insulating and airtight device for grain warehouse ventilation openings as described in claim 1 or 2, characterized in that, The silo body (1) is made of cement; The ventilation chamber 1 (20) is constructed by pouring cement. The sleeve (21) is made of alloy material.

4. The heat-insulating and airtight device for grain warehouse ventilation openings as described in claim 3, characterized in that, The connection between the ventilation chamber 1 (20) and the sleeve 1 (21) is made of cement and connected to a cylinder (201); The cylinder (201) is made of an alloy; Part of the second bladder (222) is fitted with the inner wall of the first sleeve (21), and the remaining part is fitted with the inner wall of the cylinder (201).

5. The heat-insulating and airtight device for grain warehouse ventilation openings as described in claim 1, characterized in that, A rubber sleeve (224) is fitted onto the second body (222) of the airbag (22).

6. The heat-insulating and airtight device for grain warehouse ventilation openings as described in claim 1, characterized in that, A pull ring is provided on the first (221) of the capsule.

7. The heat-insulating and airtight device for grain warehouse ventilation openings as described in claim 1, characterized in that, The thickness of the airbag (22) is 3 mm; The outer diameter of the upper bladder body (222) of the airbag (22) in its normal state is 55.5 cm; The inner diameter of the sleeve (21) is 56 cm.

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