Expansion valve protection box structure and grain cooling unit

Abstract

The utility model discloses an expansion valve protection box structure which comprises a protection unit, the protection unit comprises a supporting plate installed in a grain cooling machine and a box cover buckled on the supporting plate, and the box cover is detachably connected with the supporting plate; wherein the upper end of the side, facing the box cover, of the supporting plate is provided with a containing groove used for containing an expansion valve, the box cover is provided with a receding notch penetrating through a body of the box cover, the receding notch is used for installing an expansion valve pipeline, and a gap at the receding notch is sealed through a filling material; through the supporting plate and the box cover buckled on the supporting plate, a physical barrier is built for the electronic expansion valve, the containing groove in the supporting plate is specially used for containing the expansion valve so that the expansion valve can be stably placed, and the box cover and the supporting plate are tightly buckled and detachably connected so that a relatively closed space can be formed when the protection box is normally used. External corrosive gas can be effectively prevented from being in direct contact with the electronic expansion valve, and the possibility of gas erosion is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of grain storage equipment, specifically to an expansion valve protection box structure and a grain cooling unit. Background Technology

[0002] Grain cooling units are cooling equipment specially designed based on a comprehensive analysis of the characteristics of grain storage environment and climate. They are an important guarantee for grain storage facilities to achieve the goals of green grain storage and scientific grain preservation.

[0003] To prevent grain from rotting and becoming infested with insects in warehouses, regular fumigation is necessary. This fumigation process generates corrosive gases such as phosphine. Electronic expansion valves, as crucial components in air conditioning systems, contain numerous sophisticated electronic and metal parts. When corrosive gases like phosphine come into contact with the electronic expansion valve, they can easily corrode it, leading to damage.

[0004] The most common protection method currently is to wrap the electronic expansion valve with insulating cotton. However, this method can develop gaps over time, and there is still a significant risk. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an expansion valve protection box structure to solve the problem that the existing technology does not properly protect the electronic expansion valve, which can easily lead to the corrosion of the electronic expansion valve by corrosive gases.

[0006] According to an embodiment of the present invention, an expansion valve protection box structure includes a protection unit, the protection unit including a support plate installed inside a grain cooler, and a box cover fastened to the support plate, wherein the box cover and the support plate are detachably connected; wherein, the upper end of the side of the support plate facing the box cover is provided with a receiving groove for receiving the expansion valve, and the box cover is provided with a clearance notch penetrating its body, the clearance notch is used for installing the expansion valve pipeline, and the gap at the clearance notch is sealed with a filling material.

[0007] Compared with existing technologies, this utility model has the following advantages: A physical barrier is constructed for the electronic expansion valve through the support plate and the cover fastened to it. The receiving groove on the support plate is specifically designed to house the expansion valve, ensuring its stable placement. The tight fastening and detachable connection between the cover and the support plate create a relatively enclosed space during normal use, effectively preventing external corrosive gases from directly contacting the electronic expansion valve and reducing the possibility of gas erosion. The clearance opening on the cover for installing the expansion valve pipeline, after being sealed with filling material, further enhances the sealing performance of the protective box, preventing corrosive gases from entering the interior of the protective box from the connection between the pipeline and the cover. This provides reliable protection for the electronic expansion valve and significantly extends its service life.

[0008] Preferably, the support plate is provided with multiple sets of limiting buckles for fixing the expansion valve pipeline on the side facing the box cover, and the multiple sets of limiting buckles are located on the lower side of the receiving groove.

[0009] Preferably, the support plate is provided with a sealing groove for placing the expansion valve pipeline on the side facing the box cover. The sealing groove is located on the lower side of multiple sets of limit buckles, and the sealing groove passes through the clearance notch.

[0010] Preferably, the sealing groove cross-section is groove-shaped, and the groove opening faces multiple sets of limiting buckles.

[0011] Preferably, the box cover and the support plate are provided with a corresponding number of threaded fixing holes on their periphery, and bolts are threaded into the corresponding threaded fixing holes.

[0012] Preferably, the filler material is a sealant.

[0013] Preferably, according to an embodiment of the present invention, this application also provides a grain cooling unit including an expansion valve protection box structure, comprising: a cooling unit having an air outlet and an air inlet, and a support plate disposed inside the cooling unit; an expansion valve body disposed inside the cooling unit via a pipeline, wherein the expansion valve body is located in a receiving groove, and the pipeline passes through a sealing groove. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0015] Figure 2 This is an exploded structural diagram of the expansion valve protection box structure in an embodiment of this utility model.

[0016] The reference numerals in the accompanying drawings include: 1. Cooling unit; 100. Expansion valve body; 101. Air outlet; 102. Air inlet; 2. Support plate; 201. Receiving groove; 202. Limiting buckle; 203. Sealing groove; 3. Box cover; 301. Relief notch; 302. Threaded fixing hole. Detailed Implementation

[0017] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1 to 2As shown in the figure, this utility model embodiment proposes an expansion valve protection box structure, which includes a protection unit. The protection unit includes a support plate 2 installed in a grain cooler and a box cover 3 fastened to the support plate 2. The box cover 3 and the support plate 2 are detachably connected. The support plate 2 has a receiving groove 201 for receiving the expansion valve on the upper end of the side facing the box cover 3. The box cover 3 has a clearance notch 301 that penetrates its body. The clearance notch 301 is used to install the expansion valve pipeline. The gap at the clearance notch 301 is sealed with a filling material.

[0019] The detailed working process of this embodiment is as follows: A physical barrier is constructed for the electronic expansion valve through the support plate 2 and the cover 3 fastened to it. The receiving groove 201 on the support plate 2 is specifically used to house the expansion valve and place it stably. The tight fastening and detachable connection between the cover 3 and the support plate 2 make the protective box form a relatively closed space during normal use, which can effectively prevent external corrosive gases from directly contacting the electronic expansion valve and reduce the possibility of gas corrosion. The clearance notch 301 on the cover 3 for installing the expansion valve pipeline is sealed with filling material, which further enhances the sealing performance of the protective box 3 and prevents corrosive gases from entering the interior of the protective box from the connection between the pipeline and the cover 3, thereby providing reliable protection for the electronic expansion valve and greatly extending its service life.

[0020] like Figure 2 As shown, the support plate 2 is provided with multiple sets of limit buckles 202 for fixing the expansion valve pipeline on the side facing the box cover 3, and the multiple sets of limit buckles 202 are located on the lower side of the receiving groove 201.

[0021] The detailed working process of this embodiment is as follows: The expansion valve pipeline is fixed by the limit buckle 202, reducing the indirect impact of pipeline swaying on the electronic expansion valve. Pipeline swaying may pull on the expansion valve's interface, which may damage the connection parts of the expansion valve over time, affecting its sealing performance and normal regulating function. The limit buckle 202 avoids this situation, indirectly protecting the electronic expansion valve and reducing the risk of damage due to pipeline problems.

[0022] like Figure 2 As shown, the support plate 2 is provided with a sealing groove 203 for placing the expansion valve pipeline on the side facing the box cover 3. The sealing groove 203 is located below the multiple sets of limit buckles 202, and the sealing groove 203 passes through the clearance notch 301.

[0023] The detailed working process of this embodiment is as follows: With the setting of the sealing groove 203, it can effectively prevent external dust, water vapor, corrosive gases, etc. from entering the interior of the protective box through the clearance notch 301 and causing damage to the expansion valve and its pipeline.

[0024] When the expansion valve pipeline is placed within the sealing groove 203, it can better cooperate with the filling material, further enhancing the sealing effect at the clearance notch 301, forming a relatively enclosed space. This provides more reliable protection for the expansion valve, reducing its risk of corrosion from corrosive gases. The sealing groove 203 provides a stable placement space for the expansion valve pipeline, preventing displacement, shaking, or mutual friction during equipment operation due to vibration or other reasons, thus reducing the possibility of pipeline damage. Simultaneously, the sealing groove 203 can also buffer external impacts to a certain extent, protecting the pipeline from external damage and extending its service life.

[0025] like Figure 2 As shown, the cross-sectional shape of the sealing groove 203 is all groove-shaped, and the opening of the groove faces the multiple sets of limit buckles 202.

[0026] The detailed working process of this embodiment is as follows: The groove-shaped sealing groove 203 can better fit the shape of the expansion valve pipeline, providing more stable support and positioning. The groove design with the opening facing the limiting buckle 202 allows the sealing material to better fill the gap between the groove and the pipeline during filling. Since the groove wall can prevent the sealing material from flowing out, it is more concentratedly distributed around the pipeline, forming a tighter sealing layer. This not only prevents corrosive gases from entering through the clearance notch 301, but also effectively blocks dust, moisture and other impurities that may exist in the gap between the support plate 2 and the cover 3, providing all-round protection for the electronic expansion valve, reducing its possibility of corrosion, and extending the service life of the electronic expansion valve.

[0027] like Figure 2 As shown, the box cover 3 and the support plate 2 are provided with a corresponding number of threaded fixing holes 302 on their periphery, and bolts are threaded into the corresponding threaded fixing holes 302.

[0028] The detailed working process of this embodiment is as follows: Through the engagement of the corresponding threaded fixing holes 302 and bolts on the periphery of the cover 3 and the support plate 2, the cover 3 and the support plate 2 can be tightly fitted together. During equipment operation, vibrations and pressure changes may occur inside the grain cooler. The bolt connection can effectively resist these external forces, preventing gaps or loosening between the cover 3 and the support plate 2. The tight connection ensures the airtightness of the internal space of the protective box, preventing the entry of corrosive gases, dust, and other impurities, creating a relatively safe environment for the electronic expansion valve and reducing the risk of corrosion.

[0029] like Figure 2 As shown, the filler material is sealant.

[0030] The detailed working process of this embodiment is as follows: The sealant has good flexibility and plasticity, and can tightly adhere to the gap at the clearance notch 301 and the surface of the expansion valve pipeline. It can effectively fill tiny gaps, forming a reliable sealing barrier, greatly preventing corrosive gases from entering the protective box. Whether under the vibration environment generated by the normal operation of the grain cooler or under conditions of temperature and humidity changes, the sealant can maintain its sealing performance, ensuring that the electronic expansion valve is effectively isolated from external corrosive gases and reducing the risk of corrosion.

[0031] The shape and size of the clearance notch 301 may be complex, and the sealant adapts well to this irregular structure. After application, it automatically fills all corners, making full contact with the piping and cover for a comprehensive seal. Even if there are minor unevennesses between the sealing groove 203 and the piping, the sealant can fill these imperfections through its properties, providing a uniform seal and ensuring complete protection for the electronic expansion valve.

[0032] like Figure 1 As shown, a grain cooling unit including an expansion valve protection box structure is also provided, which includes: a cooling unit 1 with an air outlet 101 and an air inlet 102, and a support plate 2 disposed inside the cooling unit 1; an expansion valve body 100 disposed inside the cooling unit 1 through a pipeline, wherein the expansion valve body 100 is located in a receiving groove 201, and the pipeline passes through a sealing groove 203.

[0033] The detailed working process of this embodiment is as follows: The expansion valve protection box structure provides comprehensive protection for the expansion valve body 100. The receiving groove 201 provides a stable placement space for the expansion valve body 100, preventing it from being displaced or damaged by collision due to vibration during the operation of the cooling unit 1. The sealing groove 203, together with sealant, seals the pipeline, preventing corrosive gases, dust, and other impurities that may exist inside the cooling unit from contacting the expansion valve body 100 and its pipelines, reducing the risk of corrosion and damage to the expansion valve, thereby extending the service life of the expansion valve and ensuring the stable operation of the cooling unit.

[0034] The implementation principle of this application embodiment is as follows: the support plate 2 is installed in the designated position inside the cooling unit 1, the expansion valve body 100 is installed in the receiving groove 201, the pipeline connected to the expansion valve body 100 is placed in the sealing groove 203, and the pipeline is fixed by the limit buckle 202. After the installation is completed, the box cover 3 is fastened on the support plate 2, the bolts are tightened, and finally the sealant is applied to the clearance notch 301 for sealing.

[0035] Finally, it should be noted that 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 preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An expansion valve protection box structure, installed inside a grain cooler, characterized in that, include: The protection unit includes a support plate (2) installed inside the grain cooler and a box cover (3) fastened to the support plate (2), and the box cover (3) is detachably connected to the support plate (2). The support plate (2) has a receiving groove (201) for receiving the expansion valve on the upper end of the side facing the box cover (3). The box cover (3) has a clearance notch (301) that penetrates its body. The clearance notch (301) is used to install the expansion valve pipeline. The gap at the clearance notch (301) is sealed with filling material.

2. The expansion valve protection box structure according to claim 1, characterized in that: The support plate (2) is provided with multiple sets of limiting buckles (202) for fixing the expansion valve pipeline on the side facing the box cover (3), and the multiple sets of limiting buckles (202) are located on the lower side of the receiving groove (201).

3. The expansion valve protection box structure according to claim 2, characterized in that: The support plate (2) is provided with a sealing groove (203) for placing the expansion valve pipeline on the side facing the box cover (3). The sealing groove (203) is located below the multiple sets of the limiting buckles (202), and the sealing groove (203) passes through the clearance notch (301).

4. The expansion valve protection box structure according to claim 3, characterized in that: The sealing grooves (203) all have a groove-shaped cross section, and the groove openings face the multiple sets of limiting buckles (202).

5. The expansion valve protection box structure according to claim 1, characterized in that: Both the box cover (3) and the support plate (2) have a corresponding number of threaded fixing holes (302) on their periphery, and bolts are threaded into each of the threaded fixing holes (302).

6. The expansion valve protection box structure according to claim 1, characterized in that: The filler material is a sealant.

7. A grain cooling unit, comprising the expansion valve protection box structure as described in any one of claims 1 to 6, characterized in that, include: A cooling unit (1) is provided with an air outlet (101) and an air inlet (102), and the support plate (2) is disposed inside the cooling unit (1); The expansion valve body (100) is installed inside the cooling unit (1) via a pipeline, wherein, The expansion valve body (100) is located in the receiving groove (201), and the pipeline passes through the sealing groove (203).

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