Protective structure and grain cooling unit

Abstract

The utility model provides a kind of protection structure and grain cooling unit, install in unit box, for protecting electronic expansion valve, it include: the protection seat of being located in unit box, protection seat is inwardly recessed to form protection site, and electronic expansion valve is located in protection site;Cover plate, buckling in protection seat, for closing protection site, and protection seat and cover plate are all set with wire gap, when cover plate buckling in protection seat, corresponding two wire gap form via hole, for the pipeline of the electronic expansion valve of being arranged.In the effect of protection seat and cover plate, the protection site formed provides a physical isolation rigid closed space for electronic expansion valve, electronic expansion valve is completely isolated with the environment of the corrosion gas such as phosphine rich outside, cut off the condition of corrosion reaction to occur, compared with the protection mode of heat-insulating cotton, the rigid sealing structure provided in the present scheme does not exist the risk of aging, cracking, can provide stable, reliable protection.

Description

Technical Field

[0001] This utility model relates to the technical field of grain cooling units, and in particular to a protective structure and a grain cooling unit. Background Technology

[0002] Grain cooling units are specialized cooling equipment designed specifically for the characteristics of grain storage environments and climates. They are a key technological means to achieve the goals of green grain storage and scientific grain preservation. During grain storage, to prevent grain rot and pest infestation, regular chemical fumigation is necessary. This process inevitably generates large amounts of highly corrosive and toxic gases (such as phosphine). These gases have a strong chemical corrosive effect on copper materials, directly causing damage and failure of related components. To address this problem, evaporators and piping components in grain cooling units that are exposed to fumigation gases typically undergo electrophoretic protection treatment, forming a protective layer on their surface to isolate corrosion. However, the electronic expansion valves in grain cooling units cannot withstand the high-temperature process conditions required for electrophoretic treatment, therefore this protective method cannot be used.

[0003] Currently, the industry commonly uses insulation cotton to wrap and protect electronic expansion valves. Although this method is simple and easy, after long-term use, the insulation cotton is prone to aging, damage or cracks due to environmental factors. Once a gap appears, corrosive gases can seep in and react with the copper components of the electronic expansion valve, causing corrosion damage. Therefore, there is an urgent need for a protective structure to protect electronic expansion valves from corrosive gases. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a protective structure and a grain cooling unit, which solves the problem of insufficient protection caused by wrapping the electronic expansion valve with insulation cotton in existing technologies.

[0005] On the one hand, according to the embodiments of this utility model, the present utility model adopts the following technical solution:

[0006] A protective structure, installed in the unit enclosure, for protecting the electronic expansion valve, comprising:

[0007] A protective seat is located in the unit housing, with the protective seat recessed inward to form a protective position, where the electronic expansion valve is located;

[0008] The cover plate is fastened to the protective seat to close the protective position. Both the protective seat and the cover plate have wire passage notches. When the cover plate is fastened to the protective seat, the two corresponding wire passage notches form a through hole for the pipeline of the electronic expansion valve to pass through.

[0009] Preferably, the opening of the protective seat is provided with a connecting edge, which is snapped into the inside of the cover plate.

[0010] Preferably, the outer side of the connecting edge is provided with several locking blocks, and the side of the cover plate is provided with several slots corresponding to the locking blocks.

[0011] Preferably, the opening of the protective base has a mounting groove, and a sealing gasket is engaged in the mounting groove.

[0012] Preferably, a sealing sleeve is provided in the through hole.

[0013] Preferably, a mounting base is provided on the inner side of the protective base, and the electronic expansion valve is fixedly installed on the mounting base by screws.

[0014] Preferably, the protective structure also includes a support base, which is located in the unit housing, and the protective base is installed on the support base.

[0015] Preferably, the protective base has an installation edge on its side, and both the installation edge and the support base have a number of installation holes.

[0016] Preferably, the support base has fixing holes.

[0017] On the other hand, according to the embodiments of this utility model, the present utility model also adopts the following technical solutions:

[0018] Grain cooling unit, including a protective structure.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The protective seat and cover plate together form a rigid, sealed space that provides physical isolation for the electronic expansion valve. This completely isolates the valve from the external environment rich in corrosive gases such as phosphine, cutting off the conditions for corrosion reactions. Compared to the protection method of thermal insulation cotton, the rigid sealing structure provided by this solution does not have the risk of aging or cracking, and can provide stable and reliable protection. Furthermore, the snap-fit ​​installation method of the protective seat and cover plate facilitates the maintenance of the electronic expansion valve and simplifies the maintenance process. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the grain cooling unit in an embodiment of this utility model, and a partial enlarged view thereof.

[0022] Figure 2 This is a schematic diagram of the explosion structure of the protective structure and the electronic expansion valve in the embodiment of this utility model.

[0023] Figure 3 This is a schematic diagram of the exploded structure of the protective structure in an embodiment of this utility model.

[0024] Figure 4 This is a three-dimensional structural diagram of the protective structure in an embodiment of this utility model.

[0025] In the above attached figures:

[0026] 1. Support base; 101. Fixing hole;

[0027] 2. Protective base; 201. Mounting edge; 202. Mounting hole; 203. Wiring notch; 204. Connecting edge; 205. Locking block; 206. Mounting base; 207. Protective position; 208. Through hole; 209. Mounting groove;

[0028] 3. Cover plate; 301. Slot;

[0029] 4. Sealing gasket;

[0030] 5. Sealing sleeve;

[0031] 6. Electronic expansion valve;

[0032] 7. Unit enclosure. Detailed Implementation

[0033] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0034] This utility model embodiment proposes a protective structure, installed in the unit housing 7, for protecting the electronic expansion valve 6, including:

[0035] The protective seat 2 is located in the unit housing 7. The protective seat 2 is recessed inward to form a protective position 207, and the electronic expansion valve 6 is located in the protective position 207.

[0036] The cover plate 3 is fastened to the protective seat 2 to close the protective position 207. Both the protective seat 2 and the cover plate 3 have wire passage notches 203. When the cover plate 3 is fastened to the protective seat 2, the two corresponding wire passage notches 203 form through holes 208 for the pipeline of the electronic expansion valve 6 to pass through.

[0037] In the embodiments of this utility model, such as Figures 1 to 4 When the protective seat 2 and the cover plate 3 are fastened together, the protective position 207 forms a rigid, sealed space that is physically isolated. Therefore, after the protective seat 2 and the cover plate 3 are fastened onto the electronic expansion valve 6, the pipeline connecting the electronic expansion valve 6 is installed in the through hole 208 formed by the through notch 203. The electronic expansion valve 6 is in the closed protective position 207, which completely isolates the electronic expansion valve 6 from the external environment rich in corrosive gases such as phosphine, cutting off the conditions for corrosion reaction. Compared with the protection method of thermal insulation cotton, the rigid sealing structure provided by this solution does not have the risk of aging or cracking, and can provide stable and reliable protection, significantly extending the service life of the electronic expansion valve 6. In addition, the fastening installation method of the protective seat 2 and the cover plate 3 also facilitates the installation and maintenance of the electronic expansion valve 6 and simplifies the operation steps.

[0038] Specifically, to ensure the stability of the protective seat 2 after it is fastened to the cover plate 3, such as Figure 3 As shown, the opening of the protective seat 2 is provided with a connecting edge 204. The connecting edge 204 is snapped into the inner side of the cover plate 3. The connecting edge 204 has a certain elasticity, and the outer edge of the cover plate 3 also has a certain elasticity. When the protective seat 2 and the cover plate 3 are fastened together, the connecting edge 204 is squeezed and deformed inward by pressing the protective seat 2 and the cover plate 3 is deformed outward. The elastic squeezing force applied by the connecting edge 204 abuts against the inner side of the cover plate 3, thus completing the fixation of the protective seat 2 and the cover plate 3.

[0039] Due to the vibration during operation, in order to further ensure the stability of the connection between the protective seat 2 and the cover plate 3, several locking blocks 205 are provided on the outer side of the connecting edge 204. Several slots 301 corresponding to the locking blocks 205 are opened on the side of the cover plate 3. When the protective seat 2 and the cover plate 3 are aligned, pressing the protective seat 2 and the cover plate 3 causes the locking blocks 205 to deform the connecting edge 204. When the locking blocks 205 correspond to the corresponding slots 301, the locking blocks 205 can be directly engaged in the slots 301 to axially position the protective seat 2 and the cover plate 3, thereby ensuring the connection stability between the two.

[0040] Specifically, in order to further prevent corrosive gases from entering the sealed protective position 207, such as... Figure 3 As shown, the opening of the protective seat 2 has an installation groove 209, and a sealing gasket 4 is snapped into the installation groove 209. When the cover plate 3 is fastened to the protective seat 2, the sealing gasket 4 is compressed and undergoes elastic deformation, filling the gap between the cover plate 3 and the protective seat 2, forming a continuous and reliable sealing interface, effectively preventing corrosive gases from seeping into the protective position 207 from the joint.

[0041] Secondly, the pipeline of the electronic expansion valve 6 needs to pass through the through hole 208. If the through hole 208 is not sealed, it will become a channel for corrosive gases to enter the protective cavity. Therefore, if... Figure 3 and Figure 4 As shown, a sealing sleeve 5 is installed in the through hole 208. The sealing sleeve 5 can be made of a flexible material, such as rubber or silicone. The sealing sleeve 5 is wrapped around the outside of the pipeline and sealed inside the through hole 208, effectively sealing the annular gap between the pipeline and the through hole 208 and increasing the sealing effect.

[0042] Specifically, such as Figure 1 As shown, the inner side of the protective base 2 is provided with a mounting base 206. The electronic expansion valve 6 is fixedly installed on the mounting base 206 by screws. The mounting base 206 is used to fix the electronic expansion valve 6. When the whole machine vibrates, the mounting base 206 can suppress the displacement, loosening or fatigue damage of the electronic expansion valve 6 under the vibration environment.

[0043] Specifically, such as Figure 2 As shown, the protective structure also includes a support base 1, which is located on the unit housing 7. The protective base 2 is installed on the support base 1, the support base 1 is fixed to the unit housing 7, and the protective base 2 is then installed on the support base 1. This makes the unit housing 7, the support base 1, and the protective base 2 all individual components, which facilitates the early processing and maintenance and replacement of individual components.

[0044] Furthermore, the protective base 2 has a mounting edge 201 on its side. The mounting edge 201 and the support base 1 are both provided with several mounting holes 202. The protective base 2 and the support base 1 can be fixedly connected by passing screws through the mounting holes 202 of the mounting edge 201 and the support base 1, which also makes it convenient to disassemble the two later.

[0045] Meanwhile, the support base 1 has a fixing hole 101, which can be used to quickly fix the support base 1 to the unit housing 7 by passing screws through the fixing hole 101, which facilitates assembly and disassembly.

[0046] like Figure 1 As shown, this utility model embodiment also proposes a grain cooling unit, including the above-mentioned protective structure. The specific structure of the protective structure is as described in the above embodiment. Since this grain cooling unit adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0047] 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. A protection structure, mounted to a unit casing (7), for protecting an electronic expansion valve (6), characterized in that, include: A protective seat (2) is provided on the unit housing (7), the protective seat (2) is recessed inward to form a protective position (207), and the electronic expansion valve (6) is located in the protective position (207); The cover plate (3) is fastened to the protective seat (2) to close the protective position (207). Both the protective seat (2) and the cover plate (3) have wire-passing notches (203). When the cover plate (3) is fastened to the protective seat (2), the two corresponding wire-passing notches (203) form through holes (208) for passing through the pipeline of the electronic expansion valve (6).

2. A protective structure according to claim 1, wherein The opening of the protective seat (2) is provided with a connecting edge (204), which is snapped into the inner side of the cover plate (3).

3. A protective structure according to claim 2, wherein The outer side of the connecting edge (204) is provided with a plurality of locking blocks (205), and the side of the cover plate (3) is provided with a plurality of locking slots (301) corresponding to the plurality of locking blocks (205).

4. The protective structure of claim 1, wherein, The protective base (2) has an opening with a mounting groove (209), and a sealing gasket (4) is engaged in the mounting groove (209).

5. A protective structure according to claim 1 or 4, characterised in that A sealing sleeve (5) is provided through the through hole (208).

6. The protective structure of claim 1, wherein, The protective base (2) has an inner mounting base (206), and the electronic expansion valve (6) is fixedly mounted on the mounting base (206) by screws.

7. The protective structure of claim 1, wherein The protective structure also includes a support base (1), which is located on the unit housing (7), and the protective base (2) is installed on the support base (1).

8. A protective structure according to claim 7, wherein The protective base (2) has an installation edge (201) on its side, and the installation edge (201) and the support base (1) are provided with a plurality of installation holes (202).

9. A protective structure according to claim 7, wherein The support base (1) has a fixing hole (101).

10. A grain cooling unit, characterized in that Includes a protective structure according to any one of claims 1-9.

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