CN220658203U

CN220658203U - Protective cover and spraying shielding tool

Info

Publication number: CN220658203U
Application number: CN202321921835.1U
Authority: CN
Inventors: 侯跃攀; 祝朵朵
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-07-20
Filing date: 2023-07-20
Publication date: 2024-03-26
Anticipated expiration: 2033-07-20

Abstract

The application relates to the field of spraying technology, in particular to a protective cover and a spraying shielding tool. The protective cover is provided with an opening and a containing cavity communicated with the opening; the containing cavity is used for containing a liquid inlet nozzle or a liquid outlet nozzle of the replaceable hot plate. According to the heat exchange plate spraying device, the opening and the accommodating cavity communicated with the opening are formed in the protective cover, the accommodating cavity is used for accommodating the liquid inlet nozzle or the liquid outlet nozzle of the heat exchange plate, when insulating powder is sprayed on the heat exchange plate, the protective cover is covered on the liquid inlet nozzle or the liquid outlet nozzle, spraying powder pollution to the liquid inlet nozzle or the liquid outlet nozzle can be reduced, and the heat exchange plate spraying device has the characteristics of being high in efficiency and convenient to operate.

Description

Protective cover and spraying shielding tool

Technical Field

The application relates to the field of spraying technology, in particular to a protective cover and a spraying shielding tool.

Background

This section provides merely background information related to the present disclosure and is not necessarily prior art.

The heat exchange plate is a heat exchanger for cooling a heating source to control the temperature of the heating source within a design temperature range, and is widely used in products such as battery modules and the like to cool the battery modules. The heat exchange plate is usually provided with liquid inlet nozzle, liquid outlet nozzle and body portion, and body portion seals all around, and inside is equipped with the runner, and cryogenic cooling medium gets into body portion's inside through liquid inlet nozzle, flows in the runner and takes away the heat that the heat generating source passed in, finally flows through liquid outlet nozzle.

In order to meet the requirements of insulation and pressure resistance, the body part is usually required to be sprayed with insulation powder, and the liquid inlet nozzle and the liquid outlet nozzle are required to be effectively shielded in the spraying process so as to prevent the spraying powder from polluting the liquid inlet nozzle and the liquid outlet nozzle. Adhesive tape is usually used for pasting at the positions of the liquid inlet nozzle and the liquid outlet nozzle, however, the mode adopts manual wrapping, and the efficiency is low.

Disclosure of Invention

In view of the above-mentioned problem, the application provides a safety cover and spraying shielding frock, has solved the inefficiency problem that adopts the sticky tape to paste feed liquor mouth and play liquid mouth and lead to.

A first aspect of an embodiment of the present application proposes a protective cover provided with an opening and a receiving cavity communicating with the opening; the containing cavity is used for containing a liquid inlet nozzle or a liquid outlet nozzle of the replaceable hot plate. According to the embodiment of the application, the opening and the containing cavity communicated with the opening are formed in the protective cover, wherein the containing cavity is used for containing the liquid inlet nozzle or the liquid outlet nozzle of the heat exchange plate, when insulating powder is sprayed on the heat exchange plate, the protective cover is covered on the liquid inlet nozzle or the liquid outlet nozzle, so that the pollution of spraying powder to the liquid inlet nozzle or the liquid outlet nozzle can be reduced, and the heat exchange plate has the characteristics of high efficiency and convenience in operation.

In some embodiments of the present application, the protective cover comprises a cover body, the cover body encloses a containing cavity, and one end of the cover body is provided with an opening. According to the embodiment of the application, the cover body is arranged, the cover body is enclosed to form the accommodating cavity, the opening is formed in one end of the cover body, the accommodating cavity can be formed by enclosing the cover body, and the process is simple and easy to realize.

In some embodiments of the present application, the cover includes a sidewall, an outer surface of the sidewall being provided with a boss disposed along a circumference of the sidewall. According to the embodiment of the application, the side wall is arranged, the boss distributed along the circumference of the side wall is arranged on the outer surface of the side wall, powder can be accumulated through the boss, powder can flow to the vicinity of the liquid inlet nozzle and/or the liquid outlet nozzle, and the flash is reduced and the local white leakage is reduced.

In some embodiments of the present application, the number of bosses is at least one, and one boss is located at an end of the side wall facing the heat exchange plate. According to the embodiment of the application, the boss is arranged at the end part of the side wall, which faces the heat exchange plate, so that powder can be stacked through the boss, and the powder can better flow to the vicinity of the liquid inlet nozzle and/or the liquid outlet nozzle.

In some embodiments of the present application, the number of bosses is at least two, and the at least two bosses are spaced apart along the first direction; the first direction is the axial direction of the protective cover. According to the embodiment of the application, at least two bosses are arranged at intervals along the first direction, wherein the first direction is the axial direction of the protective cover, and powder can be accumulated through more bosses, so that the powder can better flow to the vicinity of the liquid inlet nozzle or the liquid outlet nozzle.

In some embodiments of the present application, the cover further comprises an end wall disposed at an end of the side wall remote from the opening, and at least one vent hole is provided in the end wall. According to the embodiment of the application, the end wall is arranged at one end, far away from the opening, of the side wall, and the at least one exhaust hole is formed in the end wall, so that gas generated after the heat exchange plate is heated in the spraying process can be exhausted, and the falling probability of the protective cover in the spraying process is reduced.

In some embodiments of the present application, the cap is an elastomer, the cap is a cylindrical structure with one end open, and the cap is interference fit to the liquid inlet or outlet. According to the embodiment of the application, the cover body is an elastic body, wherein the cover body is of a cylindrical structure with one end open; and the cover body is in interference fit with the liquid inlet nozzle or the liquid outlet nozzle, so that the cover body can be stably sleeved on the liquid inlet nozzle or the liquid outlet nozzle, and the falling probability of the cover body is reduced.

In some embodiments of the present application, the boss has a dimension along a second direction that is radial to the housing of 2 to 20 millimeters. According to the embodiment of the application, the size of the boss along the second direction is set to be 2-20 mm, so that the white area in the spraying process can be reduced.

In some embodiments of the present application, the boss has a dimension along the second direction of 3 to 10 millimeters. According to the embodiment of the application, the size of the boss along the second direction is set to be 3-10 mm, so that the white area in the spraying process can be reduced.

In a second aspect of the embodiments of the present application, a spraying shielding tool is provided, where the spraying shielding tool includes a first protection cover and a second protection cover, the first protection cover is used for shielding a liquid inlet nozzle, and the second protection cover is used for shielding a liquid outlet nozzle; at least one of the first protective cover and the second protective cover is the aforementioned protective cover. The spraying in this application shields frock includes first protective cover and second safety cover, and first protective cover is used for shielding the feed liquor mouth, and the second safety cover is used for shielding the play liquid mouth, can realize shielding simultaneously feed liquor mouth and play liquid mouth.

In some embodiments of the present application, the spray masking tool further comprises a weight assembly disposed on the first protective cover or the second protective cover. According to the embodiment of the application, the counterweight assembly is added, so that at least one of the first protective cover and the second protective cover can be limited through the counterweight assembly, and the shaking or moving probability of the first protective cover and the second protective cover is reduced.

In some embodiments of the present application, the spraying shielding tool further includes a fixing component, the fixing component and the counterweight component are respectively disposed on two sides of the board surface of the heat exchange board, one of the first protective cover and the second protective cover is connected with the fixing component, and the other is connected with the counterweight component. According to the embodiment of the application, the fixing assembly is arranged, the fixing assembly and the counterweight assembly are arranged on two sides of the plate surface of the heat exchange plate respectively, one of the first protective cover and the second protective cover is connected with the fixing assembly, the other is connected with the counterweight assembly, the heat exchange plate can be positioned through the fixing assembly, and the probability of mutual collision between different heat exchange plates is reduced.

In some embodiments of the present application, the size of the receiving cavity of the first protective cover in the first direction is smaller than the size of the liquid inlet nozzle; and/or the size of the accommodating cavity of the second protective cover along the first direction is smaller than the size of the liquid outlet nozzle. According to the embodiment of the application, the size of the accommodating cavity of the first protective cover along the first direction is smaller than that of the liquid inlet nozzle, and/or the size of the accommodating cavity of the second protective cover along the first direction is smaller than that of the liquid outlet nozzle, wherein the first direction is the axial direction of the first protective cover or the axial direction of the second protective cover, a certain gap is reserved between the first protective cover and the heat exchange plate when the first protective cover is installed on the liquid inlet nozzle, and a certain gap is reserved between the second protective cover and the heat exchange plate when the second protective cover is installed on the liquid outlet nozzle, so that the local white area of the surface of the heat exchange plate can be reduced, and flash is reduced.

In some embodiments of the present application, the range of the distance between the end surface of the first protective cover having the opening and the plate surface of the heat exchange plate in the first direction is 2 mm or more and 4 mm or less, and/or the range of the distance between the end surface of the second protective cover having the opening and the plate surface of the heat exchange plate in the first direction is 2 mm or more and 4 mm or less. According to the embodiment of the application, the range of the distance between the end face of the first protective cover with the opening along the first direction and the plate surface of the heat exchange plate is set to be more than or equal to 2 mm and less than or equal to 4 mm, so that when the first protective cover is mounted on the liquid inlet nozzle, the gap between the first protective cover and the heat exchange plate is 2-4 mm; in addition, the range of the distance between the end face of the second protective cover with the opening and the plate surface of the heat exchange plate is set to be more than or equal to 2 mm and less than or equal to 4 mm, so that the gap between the second protective cover and the heat exchange plate is 2-4 mm when the second protective cover is mounted on the liquid outlet nozzle, the area of local white reserved on the surface of the heat exchange plate can be reduced, and flash is reduced.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a schematic perspective view of a protective cover according to some embodiments of the present disclosure;

FIG. 2 is a schematic view of the protective cover shown in FIG. 1 in a second view;

FIG. 3 is a schematic cross-sectional view of the protective cover shown in FIG. 2 taken along section A-A;

FIG. 4 is a schematic view of an exploded structure of the protective cover shown in FIG. 1 applied on a heat exchange plate;

fig. 5 is a schematic structural diagram of a spraying shielding tool in a use state according to some embodiments of the present application;

FIG. 6 is a schematic view of a partial enlarged structure at B in FIG. 5;

fig. 7 is a schematic structural view of the spray coating shielding tool shown in fig. 5 at a second view angle.

The reference numerals are as follows:

100. spraying and shielding tools;

10. a protective cover; 11. an opening; 12. a receiving chamber; 13. a cover body; 131. a sidewall; 132. an end wall; 1321. an exhaust hole; 14. a boss;

20. a counterweight assembly;

30. a fixing assembly;

101. a first protective cover; 102. a second protective cover;

200. a heat exchange plate; 201. a liquid inlet nozzle; 202. and a liquid outlet nozzle.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

The more widely the application of power cells is seen from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, and a plurality of fields such as military equipment, aerospace, and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

To cool the power cells, a replacement hot plate is typically provided. The heat exchange plate is a heat exchanger for cooling a heat source to control the temperature of the heat source within a design temperature range. The heat exchange plate is usually provided with liquid inlet nozzle, liquid outlet nozzle and body portion, and body portion seals all around, and inside is equipped with the runner, and cryogenic cooling medium gets into body portion's inside through liquid inlet nozzle, flows in the runner and takes away the heat that the heat generating source passed in, finally flows through liquid outlet nozzle.

In order to solve the problem, embodiments of the present application provide a protection cover, which shields at least one of a liquid inlet nozzle and a liquid outlet nozzle of a heat exchange plate, so as to reduce the probability of powder polluting the liquid inlet nozzle and/or the liquid outlet nozzle.

The protective cover in the embodiment of the application can be applied to the spraying process of the heat exchange plate and the powder spraying process of other heat exchangers to form local shielding of the spraying part.

A first aspect of the embodiments of the present application proposes a protective cover 10, as shown in fig. 1 to 3, the protective cover 10 being provided with an opening 11 and a receiving cavity 12 communicating with the opening 11; the accommodating cavity 12 is used for accommodating a liquid inlet nozzle 201 or a liquid outlet nozzle 202 of the replacement hot plate 200.

It should be noted that, the liquid inlet nozzle 201 or the liquid outlet nozzle 202 is inserted into the accommodating cavity 12 through the opening 11, so as to realize the effect of shielding the liquid inlet nozzle 201 or the liquid outlet nozzle 202 by the protective cover 10.

It should be understood that the number of the protection covers 10 is one, the liquid inlet nozzle 201 may be covered, or the liquid outlet nozzle 202 may be covered, or the number of the protection covers 10 may be two or more, and the liquid inlet nozzle 201 and the liquid outlet nozzle 202 may be covered simultaneously. The heat exchange plate 200 is generally in a harmonica-shaped structure, which is a common structural form and will not be described herein.

According to the embodiment of the application, the opening 11 and the accommodating cavity 12 communicated with the opening 11 are arranged on the protective cover 10, wherein the accommodating cavity 12 is used for accommodating the liquid inlet nozzle 201 or the liquid outlet nozzle 202 of the heat exchange plate 200, when insulating powder is sprayed on the heat exchange plate 200, the protective cover 10 is covered on the liquid inlet nozzle 201 or the liquid outlet nozzle 202, the probability that the sprayed powder pollutes the liquid inlet nozzle 201 or the liquid outlet nozzle 202 can be reduced, and the heat exchange plate has the characteristics of high efficiency and convenience in operation.

Optionally, the protection cover 10 includes a cover body 13, the cover body 13 is enclosed to form a containing cavity 12, and one end of the cover body 13 is provided with an opening 11. The accommodating cavity 12 can be a cylindrical cavity, a rectangular cavity or a cavity with other shapes, and the shape of the cavity is consistent with the shapes of the liquid inlet nozzle 201 and the liquid outlet nozzle 202. In fig. 3, the accommodating chamber 12 is a cylindrical chamber, and is defined based on a circular structure of the liquid inlet nozzle 201 and the liquid outlet nozzle 202.

According to the embodiment of the application, the cover body 13 is arranged, the cover body 13 is surrounded to form the accommodating cavity 12, the opening 11 is formed in one end of the cover body 13, the accommodating cavity 12 can be formed by the cover body 13, and the process is simple and easy to realize.

Alternatively, as shown in fig. 3, the cover 13 includes a side wall 131, and the outer surface of the side wall 131 is provided with a boss 14, the boss 14 being provided along the circumferential direction of the side wall 131. The side wall 131 is a cylindrical structure with two open ends 11, and the boss 14 is a circular boss, so that powder in the spraying process can be conveniently accumulated.

According to the embodiment of the application, the side wall 131 is arranged, the boss 14 distributed along the circumferential direction of the side wall 131 is arranged on the outer surface of the side wall 131, so that powder can be accumulated through the boss 14, the powder flows to the vicinity of the liquid inlet nozzle 201 and/or the liquid outlet nozzle 202, and the flash is reduced and the local white leakage is reduced.

Alternatively, as shown in fig. 1 and 3, the number of bosses 14 is at least one, and one boss 14 is located at the end of the side wall 131 facing the heat exchange plate 200. That is, one boss 14 is located at the end of the side wall 131 facing the heat exchange plate 200, and the end of the boss 14 is flush with the end of the side wall 131 facing the heat exchange plate 200, so that powder can be accumulated in a place nearer to the surface of the heat exchange plate 200, so that the powder can be conveniently guided to the vicinity of the liquid inlet nozzle 201 and/or the liquid outlet nozzle 202, and the flash and the local white leakage are reduced.

By providing the bosses 14 at the end of the side wall 131 facing the heat exchanger plate 200, the embodiment of the application may enable a build-up of powder by the bosses 14, such that the powder better flows to the vicinity of the liquid inlet nozzle 201 and/or the liquid outlet nozzle 202.

Alternatively, as shown in fig. 2 and 3, the number of the bosses 14 is at least two, and the at least two bosses 14 are spaced apart along the first direction X-X; the first direction X-X is the axial direction of the boot 10, i.e. the axial direction of the boot body 13. The number of the bosses 14 may be two or three or more, and the adjacent bosses 14 may have a space therebetween, in which case the space between the adjacent bosses 14 is uniform for convenience of assembling the weight assembly 20. In fig. 3, the spacing between two adjacent bosses 14 is L2, and the dimension of L2 is adapted to the thickness of the weight assembly 20, so that the weight assembly 20 is conveniently mounted in the spacing between two bosses 14.

According to the embodiment of the application, at least two bosses 14 are arranged at intervals along the first direction X-X, wherein the first direction X-X is the axial direction of the cover 13, and powder accumulation can be achieved through more bosses 14, so that powder flows to the vicinity of the liquid inlet nozzle 201 and/or the liquid outlet nozzle 202 better.

Optionally, as shown in fig. 3, the cover 13 further includes an end wall 132, where the end wall 132 is disposed at an end of the side wall 131 away from the opening 11, and at least one exhaust hole 1321 is disposed on the end wall 132.

The exhaust hole 1321 may be a plurality of circular through holes, a plurality of rectangular holes, or a plurality of through holes of other shapes, and in fig. 1, the exhaust hole 1321 is a cross-shaped through hole, and the exhaust function can be achieved regardless of the shape of the through hole.

According to the embodiment of the application, the end wall 132 is arranged at one end, far away from the opening 11, of the side wall 131, and the at least one exhaust hole 1321 is formed in the end wall 132, so that gas generated after the heat exchange plate 200 is heated in the spraying process can be discharged, and the falling probability of the protective cover 10 in the spraying process is reduced.

Optionally, the cover 13 is an elastomer, the cover 13 is a cylindrical structure with an opening 11 at one end, and the cover 13 is in interference fit with the liquid inlet nozzle 201 or the liquid outlet nozzle 202. The elastomer mentioned here refers to a material having elasticity, such as silica gel or rubber, and the cover 13 is conveniently assembled to the liquid inlet nozzle 201 or the liquid outlet nozzle 202. The fact that the cover 13 is in interference fit with the liquid inlet nozzle 201 or the liquid outlet nozzle 202 means that the inner diameter of the cover 13 is smaller than the maximum outer diameter of the liquid inlet nozzle 201, and the inner diameter of the cover 13 is smaller than the maximum outer diameter of the liquid outlet nozzle 202. The shapes and sizes of the liquid inlet nozzle 201 and the liquid outlet nozzle 202 are generally consistent, so that the maximum outer diameter of the liquid inlet nozzle 201 and the maximum outer diameter of the liquid outlet nozzle 202 are generally consistent, and the cover 13 can be in one specification. When the sizes of the liquid inlet nozzle 201 and the liquid outlet nozzle 202 are inconsistent, the cover bodies 13 with different specifications can be manufactured for the liquid inlet nozzle 201 and the liquid outlet nozzle 202 respectively, and the liquid inlet nozzle 201 and the liquid outlet nozzle 202 are shielded by adopting the cover bodies 13 with different specifications.

When the liquid inlet nozzle 201 and the liquid outlet nozzle 202 are required to be shielded at the same time, two protection covers 10 are adopted to shield respectively.

The embodiment of the application is characterized in that the cover body 13 is an elastic body, wherein the cover body 13 is of a cylindrical structure with one end opened 11; and the cover body 13 is in interference fit with the liquid inlet nozzle 201 or the liquid outlet nozzle 202, so that the cover body 13 can be stably sleeved on the liquid inlet nozzle 201 or the liquid outlet nozzle 202, and the falling probability of the cover body 13 is reduced.

Alternatively, as shown in fig. 3, the dimension L1 of the boss 14 along the second direction Y-Y is 2 to 20 mm, such as 5 mm, 8 mm, 15 mm, or the like, wherein the second direction Y-Y is the radial direction of the cover 13.

The embodiment of the present application can reduce the white-reserving area during the spraying process by setting the dimension L1 of the boss 14 in the second direction Y-Y to 2 to 20 mm.

Alternatively, the size of the boss 14 along the second direction Y-Y is 3 to 10 mm, such as 4 mm or 7 mm, and the like, and the embodiment of the present application can more significantly reduce the white space area during the spraying process and improve the uniformity of spraying the heat exchange plate 200 by setting the size of the boss 14 along the second direction Y-Y to 3 to 10 mm.

In a second aspect of the embodiments of the present application, as shown in fig. 4 to 7, a spray coating shielding tool 100 is provided, where the spray coating shielding tool 100 includes at least two protective covers 10 and a counterweight assembly 20, the at least two protective covers 10 include a first protective cover 101 and a second protective cover 102, the first protective cover 101 is used for shielding a liquid inlet nozzle 201, and the second protective cover 102 is used for shielding a liquid outlet nozzle 202; the weight assembly 20 is disposed on at least one of the first protective cover 101 and the second protective cover 102.

It should be noted that, the specifications of the first protective cover 101 and the second protective cover 102 may be the same or different, where the specification of the first protective cover 101 depends on the specification of the liquid inlet nozzle 201, and the specification of the second protective cover 102 depends on the specification of the liquid outlet nozzle 202. The weight assembly 20 herein may be a weight or other weight structure.

When the counterweight assembly 20 is arranged on the first protective cover 101 and/or the second protective cover 102, the counterweight assembly 20 can be hung between two bosses 14 of the first protective cover 101 and/or between two bosses 14 of the second protective cover 102, limiting of the counterweight assembly 20 is achieved through the bosses 14, relative sliding between the first protective cover 101 and the liquid inlet nozzle 201 in the spraying process is reduced, and/or relative sliding between the second protective cover 102 and the liquid outlet nozzle 202 in the spraying process is reduced, so that the powder amount accumulated near the protective cover 10 is increased.

The spraying in this application shields frock 100 through setting up safety cover 10 to two at least, and two at least safety covers 10 include first safety cover 101 and second safety cover 102, and first safety cover 101 is used for shielding the feed liquor mouth 201, and second safety cover 102 is used for shielding the play liquid mouth 202, and counterweight assembly 20 sets up in at least one of first safety cover 101 and second safety cover 102 two, then can carry out spacingly to at least one of first safety cover 101 and second safety cover 102 through counterweight assembly 20, reduces the probability that first safety cover 101 and second safety cover 102 rocked or move.

Optionally, as shown in fig. 5 to 7, the spraying shielding tool 100 further includes a fixing assembly 30, where the fixing assembly 30 and the counterweight assembly 20 are respectively disposed on two sides of the board surface of the heat exchange board 200. The fixing assembly 30 may be a fixing plate, or may be other structures for fixing the heat exchange plate 200. Considering that the number of the heat exchange plates 200 is multiple, collision among different heat exchange plates 200 is easy to occur in the spraying process, the fixing assembly 30 is arranged to fix different heat exchange plates 200 simultaneously, so that a space is reserved between two adjacent heat exchange plates 200, and the collision probability of the two adjacent heat exchange plates 200 is reduced.

According to the embodiment of the application, the fixing assembly 30 is arranged, the fixing assembly 30 and the counterweight assembly 20 are respectively arranged on the two sides of the plate surface of the heat exchange plate 200, so that the heat exchange plate 200 can be positioned, and the probability of mutual collision between different heat exchange plates 200 is reduced.

Optionally, the dimension H1 of the accommodating cavity 12 of the first protective cover 101 is smaller than the dimension H2 of the liquid inlet nozzle 201 along the first direction X-X; and/or, the size H1 of the accommodating cavity 12 of the second protective cover 102 along the first direction X-X is smaller than the size H3 of the liquid outlet 202.

Typically H2 and H3 are the same, as are the dimensions of the receiving cavity 12 of the first protective cover 101 and the dimensions of the receiving cavity 12 of the second protective cover 102.

According to the embodiment of the application, the size H1 of the accommodating cavity 12 of the first protective cover 101 along the first direction X-X is smaller than the size H2 of the liquid inlet nozzle 201, so that a certain gap is reserved between the first protective cover 101 and the heat exchange plate 200 when the first protective cover 101 is installed on the liquid inlet nozzle 201, and the size H1 of the accommodating cavity 12 of the second protective cover 102 along the first direction X-X is smaller than the size H3 of the liquid outlet nozzle 202, so that a certain gap is reserved between the second protective cover 102 and the heat exchange plate 200 when the second protective cover 102 is installed on the liquid outlet nozzle 202, the surface of the heat exchange plate 200 can be reduced, and the local blank-keeping area is reduced.

Alternatively, as shown in fig. 4 and 7, the distance between the end surface of the first protective cover 101 having the opening 11 and the plate surface of the heat exchange plate 200 along the first direction X-X is W, the value of W is 2 mm or more and 4 mm or less, the distance between the end surface of the second protective cover 102 having the opening 11 and the plate surface of the heat exchange plate 200 along the first direction X-X is L, and the value of L is 2 mm or more and 4 mm or less. In the embodiment of the application, by setting the range of the distance W between the end surface of the first protective cover 101 having the opening 11 and the plate surface of the heat exchange plate 200 along the first direction X-X to be 2 mm or more and 4 mm or less, the gap between the first protective cover 101 and the heat exchange plate 200 can be 2 to 4 mm when the first protective cover 101 is mounted on the liquid inlet nozzle 201; in addition, by setting the value range of the distance L between the end surface of the second protection cover 102 having the opening 11 and the plate surface of the heat exchange plate 200 to be 2 mm or more and 4 mm or less, the clearance between the second protection cover 102 and the heat exchange plate 200 can be made 2 to 4 mm when the second protection cover 102 is attached to the liquid outlet nozzle 202, and the area where local white remains on the surface of the heat exchange plate 200 can be reduced, and burrs can be reduced.

In order to be able to conveniently define the spacing L and the spacing W, the dimension H1 of the receiving cavity 12 of the first protective cover 101 along the first direction X-X may be 2 to 4 mm, such as 3 mm or 3.5 mm, smaller than the dimension H2 of the nozzle 201; the dimension H1 of the receiving chamber 12 of the second protective cover 102 along the first direction X-X is 2 to 4 mm, such as 3 mm or 3.5 mm, smaller than the dimension H3 of the spout 202. That is, when the first protective cover 101 is mounted in place, the distance L between the end of the first protective cover 101 facing the heat exchange plate 200 and the surface of the heat exchange plate 200 is 2 to 4 mm, and when the second protective cover 102 is mounted in place, the distance L between the end of the second protective cover 102 facing the heat exchange plate 200 and the surface of the heat exchange plate 200 is 2 to 4 mm.

The application process of the spraying shielding tool 100 in the embodiment of the application is specifically as follows:

inserting the first protective cover 101 onto the liquid inlet nozzle 201 such that the end of the liquid inlet nozzle 201 is in contact with the end wall 132 of the first protective cover 101;

inserting the second protective cover 102 over the spout 202 such that the end of the spout 202 is in contact with the end wall 132 of the second protective cover 102;

mounting the weight assembly 20 between adjacent bosses 14 of the first protective cover 101;

mounting the securing assembly 30 between adjacent ones of the bosses 14 of the second boot 102; it should be noted that, in consideration of the requirement that the plurality of heat exchange plates 200 are simultaneously sprayed, the fixing assembly 30 herein is simultaneously mounted on the plurality of second protection covers 102 to simultaneously fix the plurality of heat exchange plates 200.

After the heat exchange plates 200 and the spraying shielding tool 100 are hung, the powder enters a spraying room for surface treatment, and the number of the heat exchange plates 200 is multiple, so that the powder can be sprayed on the heat exchange plates 200 at the same time.

It should be noted that, the interval between two adjacent bosses 14 is L2, the dimension of L2 is adapted to the thickness of the counterweight assembly 20, and the counterweight assembly 20 is disposed between two adjacent bosses 14 in an interference manner, so that the vibration of the heat exchange plates 200 in the spraying process is smaller, the phenomenon of mutual collision between the heat exchange plates 200 is reduced, and the white leakage condition of mutual interference between the heat exchange plates 200 is reduced.

The structure of other parts in this application refers to the prior art, and the description is not repeated here.

The foregoing is merely a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The protective cover is characterized by being provided with an opening and a containing cavity communicated with the opening;

the containing cavity is used for containing a liquid inlet nozzle or a liquid outlet nozzle of the replaceable hot plate.

2. The protective cover of claim 1, wherein the protective cover comprises a cover body enclosing the receiving cavity, and wherein one end of the cover body is provided with the opening.

3. The protective cover of claim 2, wherein the cover body comprises a sidewall, an outer surface of the sidewall being provided with a boss, the boss being disposed along a circumferential direction of the sidewall.

4. A protective cover according to claim 3, wherein the number of bosses is at least one, and one boss is located at an end of the side wall facing the heat exchanger plate.

5. The protective cover of claim 3, wherein the number of bosses is at least two, and at least two of the bosses are spaced apart along the first direction;

the first direction is the axial direction of the protective cover.

6. The protective cover of claim 3, wherein the cover further comprises an end wall disposed at an end of the side wall remote from the opening, and wherein the end wall is provided with at least one vent.

7. A protective cover according to claim 3, wherein the cover body is an elastomer, and the cover body has a cylindrical structure with one end open; and the cover body is in interference fit with the liquid inlet nozzle or the liquid outlet nozzle.

8. The protective cover of claim 7, wherein the boss has a dimension in a second direction that is radial to the cover body of 2 to 20 millimeters.

9. The protective cover of claim 8, wherein a dimension of said boss along said second direction is 3 to 10 millimeters.

10. Spraying shields frock, its characterized in that, spraying shields frock and includes:

a first protective cover and a second protective cover, wherein the first protective cover is used for shielding a liquid inlet nozzle of the heat exchange plate, the second protective cover is used for shielding a liquid outlet nozzle of the heat exchange plate, and at least one of the first protective cover and the second protective cover is a protective cover according to any one of claims 1 to 9.

11. The spray masking tool of claim 10, further comprising a weight assembly disposed on the first protective cover or the second protective cover.

12. The spray masking tool of claim 11, wherein the spray masking tool further comprises a securing assembly;

the fixing component and the counterweight component are respectively arranged on two sides of the plate surface of the heat exchange plate, one of the first protective cover and the second protective cover is connected with the fixing component, and the other is connected with the counterweight component.

13. The spray masking tool of claim 10, wherein the size of the receiving cavity of the first protective cover in the first direction is less than the size of the liquid inlet nozzle; and/or the size of the accommodating cavity of the second protective cover is smaller than the size of the liquid outlet nozzle along a first direction, wherein the first direction is the axial direction of the first protective cover or the axial direction of the second protective cover.

14. The spray masking tool of claim 13, wherein a range of a spacing dimension between the end face of the first protective cover having the opening and the plate face of the heat exchange plate in the first direction is 2 mm or more and 4 mm or less, and/or a range of a spacing dimension between the end face of the second protective cover having the opening and the plate face of the heat exchange plate in the first direction is 2 mm or more and 4 mm or less.