Automatic return water flow direction switching structure for coating and spraying pretreatment and coating and spraying equipment

Abstract

The utility model discloses an automatic backwater flow direction switching structure for coating and spraying pretreatment and coating and spraying equipment, workpieces are accommodated in the shed body, the shed body is communicated with a Y-shaped backwater main pipe, the Y-shaped backwater main pipe comprises a backwater main part and two forked backwater branch parts, the backwater main part is vertically communicated with the shed body, and the two forked backwater branch parts are communicated with the shed body. The two water return branch parts are respectively communicated with the first water tank and the second water tank through a first water return shunting pipe and a second water return shunting pipe, a first pneumatic butterfly valve and a second pneumatic butterfly valve for controlling the on-off of water flow are respectively arranged on the two water return branch parts, and the first water tank and the second water tank are connected into the shed body through spraying pipes. The first water tank and the second water tank are correspondingly filled with different liquid medicine, a workpiece is placed in the shed body to be sprayed, the return water flow direction is automatically switched for shared spraying of two process sections, the length of a process line is well shortened, and the occupied area is reduced; residual liquid medicine in the first water return flow dividing pipe and the second water return flow dividing pipe is prevented from flowing back into the Y-shaped water return main pipe, and the liquid mixing degree of different liquid medicine is reduced to the minimum.

Description

Technical Field

[0001] The utility model belongs to the technical field of coating, and particularly relates to a coating spraying pre-treatment automatic switching backwater flow direction structure and a coating spraying device. Background Art

[0002] In common coating production lines, workpieces need to be cleaned before coating. The coating spray treatment line currently adopts a continuous through-type. Since the spraying is usually divided into a variety of different liquids for independent processes, the design requires a longer process line, the equipment occupies a large area, has high requirements for multiple sites, and the equipment cost is also high. Utility Model Content

[0003] The purpose of the utility model is to provide a coating spray pre-treatment automatic switching backwater flow direction structure and coating spray equipment to solve the problems raised in the above background technology.

[0004] In view of this, the utility model provides a structure for automatically switching the return water flow direction before spraying for painting, a shed body for accommodating workpieces inside and spraying the workpieces, the shed body is connected to a Y-shaped return water main, the Y-shaped return water main body includes a return water main part and two forked return water branches, the return water main part vertically connects to the shed body, the two return water branches are connected to a first water tank and a second water tank through a first return water diverter pipe and a second return water diverter pipe respectively, the two return water branches are respectively provided with a first pneumatic butterfly valve and a second pneumatic butterfly valve for controlling the interruption of water flow, the first water tank and the second water tank are both connected to the shed body through a spray pipe.

[0005] A further implementation scheme of the utility model is that the Y-shaped water return main pipe is arranged at the bottom of the shed body, and the water return main part is vertically connected to the bottom of the shed body.

[0006] A further implementation scheme of the utility model is that the first return water splitter and the second return water splitter are horizontally connected to the return water branch.

[0007] Another solution provides a coating spraying device, including the structure for automatically switching the return water flow direction before coating spraying as described in the above embodiment.

[0008] The beneficial effects of the utility model are:

[0009] The first water tank and the second water tank are respectively filled with different liquid medicines, and the workpieces are placed in the shed to be sprayed. When the liquid medicine in the first water tank needs to be used for spraying, the first pneumatic butterfly valve is opened and the second pneumatic butterfly valve is closed. After the liquid medicine enters the shed through the spray pipe to spray the workpiece, it flows to the first water tank through the return water main part and the corresponding return water branch for circulation. When the liquid medicine in the second water tank needs to be sprayed, the first pneumatic butterfly valve is closed and the second pneumatic butterfly valve is opened in the same way. After the liquid medicine is sprayed, it flows to the second water tank for circulation. In this way, the return water flow direction is automatically switched to carry out common spraying for the two process sections, which greatly shortens the length of the process line, reduces the floor space, and saves costs. In addition, it can also prevent the residual liquid medicine in the first return water diverter and the second return water diverter from flowing back into the Y-type return water main pipe to a certain extent, thereby minimizing the degree of mixing of different liquid medicines. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a plan view of the structure for automatically switching backwater flow direction before spraying for coating according to the utility model. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0012] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0013] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0014] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0015] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0016] like Figure 1 , the present embodiment provides an automatic switching return water flow direction structure for coating spray pre-treatment, a shed body 1 for accommodating workpieces and spraying the workpieces, the shed body 1 is connected to a Y-shaped return water main pipe 2, the Y-shaped return water main pipe 2 is arranged at the bottom of the shed body 1, the Y-shaped return water main pipe 2 includes a return water main part 20 and two forked return water branches 21, the return water main part 20 is vertically connected to the shed body 1, and the return water main part 20 is vertically connected to the bottom of the shed body 1.

[0017] The two return water branches 21 are connected to the first water tank 5 and the second water tank 6 through the first return water branch pipe 3 and the second return water branch pipe 4 respectively. The first return water branch pipe 3 and the second return water branch pipe 4 are horizontally connected to the return water branch 21. The two return water branches 21 are respectively provided with the first pneumatic butterfly valve 7 and the second pneumatic butterfly valve 8 for controlling the interruption of water flow. The first water tank 5 and the second water tank 6 are connected to the shed body 1 through the spray pipe.

[0018] The first water tank 5 and the second water tank 6 are respectively filled with different liquid medicines. The workpiece is placed in the shed body 1 for spraying. When the liquid medicine in the first water tank 5 is needed for spraying, the first pneumatic butterfly valve 7 is opened and the second pneumatic butterfly valve 8 is closed. The liquid medicine enters the shed body 1 through the spray pipe to spray the workpiece, and then flows to the first water tank 5 through the return water main part 20 and the corresponding return water branch part 21 for recycling.

[0019] When the second water tank 6 needs to be sprayed with liquid medicine, the first pneumatic butterfly valve 7 is closed and the second pneumatic butterfly valve 8 is opened in the same way. After spraying, the liquid medicine flows into the second water tank 6 for circulation; thereby automatically switching the return water flow direction for shared spraying of the two process sections, which effectively shortens the length of the process line, reduces the floor space, and saves costs.

[0020] In addition, it can also prevent the residual liquid medicine in the first return water shunt pipe 3 and the second return water shunt pipe 4 from flowing back into the Y-shaped return water main pipe 2 to a certain extent, thereby minimizing the mixing degree of different liquid medicines.

[0021] Another embodiment provides a coating spraying device, including the structure for automatically switching back the water flow direction during coating spraying pre-treatment in the above-mentioned embodiment.

[0022] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. The automatic switching backflow direction structure before spraying for painting is characterized by: A shed body for accommodating workpieces inside and spraying the workpieces, the shed body is connected to a Y-shaped water return main, the Y-shaped water return main comprises a water return main part and two forked water return branches, the water return main part vertically connects to the shed body, the two water return branches are connected to a first water tank and a second water tank through a first water return branch pipe and a second water return branch pipe respectively, the two water return branches are respectively provided with a first pneumatic butterfly valve and a second pneumatic butterfly valve for controlling water flow interruption, the first water tank and the second water tank are both connected to the shed body through a spray pipe.

2. The automatic switching backflow direction structure for spraying before painting according to claim 1 is characterized in that: The Y-shaped water return main pipe is arranged at the bottom of the shed body, and the water return main part is vertically connected to the bottom of the shed body.

3. The automatic switching backflow direction structure for spraying before painting according to claim 1 is characterized in that: The first return water splitter and the second return water splitter are horizontally connected to the return water branch.

4. A coating spraying equipment, characterized in that: It includes the automatic switching backflow direction structure for coating spray pre-treatment as described in any one of claims 1-3.

Images