Support for blind pipe brushing device and blind pipe brushing device

Abstract

The utility model relates to the technical field of photovoltaics and semiconductors, in particular to a bracket for a blind tube brushing device and the blind tube brushing device. The support comprises at least one supporting assembly, each supporting assembly comprises a fixed shaft sleeve, at least three supporting rods, a sliding shaft sleeve, at least three connecting rods and a first driving assembly, the fixed shaft sleeves are fixed to the conveying pipe, and the conveying pipe is sleeved with the sliding shaft sleeves in a sliding mode; one end of each connecting rod is hinged with the supporting rod, and the other end is hinged with the outer side wall of the sliding shaft sleeve; the first driving assembly is in transmission connection with the sliding shaft sleeve to drive the sliding shaft sleeve to move in the axis direction of the conveying pipe, so that the supporting rod is unfolded or folded; each supporting assembly comprises at least three supporting rods which are evenly distributed on the outer side wall of the fixing shaft sleeve in the circumferential direction, so that it is guaranteed that the conveying pipe is in a stable state in the brushing process and has no displacement in position, and then the stability of the brush head and the accuracy of the position are guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of photovoltaic and semiconductor technology, in particular to a support for a blind tube brush coating device and a blind tube brush coating device. BACKGROUND

[0002] Quartz glass is applied in many fields due to its excellent performance, especially in the high-end field of the rapidly developing photovoltaic and semiconductor industries. Quartz tubes are often used as reaction cavities for film coating processes in tube furnaces, and quartz blind tubes are a special processing of quartz tubes. The inner wall of the quartz blind tube needs to be coated with a high-temperature resistant coating for protection. The coating of the curved surface of the blind tube is difficult and the yield is not high. The main defects are uneven coating or local areas with missed coating. The main reason is that the brush head shakes and the rotation center of the brush head is difficult to keep consistent with the axis of the blind tube during the coating process of the curved surface of the blind tube.

[0003] Therefore, the technical problem to be solved at present is how to ensure the stability and accuracy of the position of the brush head during the coating process. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the technical problem to be solved at present is how to ensure the stability and accuracy of the position of the brush head during the coating process.

[0005] In a first aspect, an embodiment of the present application provides a support for a blind tube brush coating device, the blind tube brush coating device comprising a material conveying pipe and a brush head located at one end of the material conveying pipe, and the support comprising at least one set of support assemblies, the support assemblies being arranged on the material conveying pipe, and each support assembly comprising: a fixed shaft sleeve, a support rod, a sliding shaft sleeve, a connecting rod, and a first driving assembly. The fixed shaft sleeve is fixedly mounted on the material conveying pipe. At least three support rods, one end of each of the support rods being hingedly connected to the outer side wall of the fixed shaft sleeve, and the at least three support rods being evenly arranged on the outer side wall of the fixed shaft sleeve in the circumferential direction. The sliding shaft sleeve is slidably sleeved on the material conveying pipe. At least three connecting rods, one end of each of the connecting rods being hingedly connected to one of the support rods, and the other end being hingedly connected to the outer side wall of the sliding shaft sleeve. The first driving assembly is in transmission connection with the sliding shaft sleeve, and the first driving assembly is configured to drive the sliding shaft sleeve to move along the axis direction of the material conveying pipe to expand or retract the support rods.

[0006] In some embodiments, the support further comprises: a universal wheel arranged on the support rod away from the end of the fixed shaft sleeve.

[0007] In some embodiments, the number of the first driving assemblies is consistent with the number of the sliding bushings, and each of the first driving assemblies is in driving connection with one of the sliding bushings.

[0008] In some embodiments, the first driving assemblies are fixedly installed on the material conveying pipe.

[0009] In some embodiments, the support frame further comprises transmission rods, each of which is connected with at least two of the sliding bushings, and each of the transmission rods is connected with the first driving assembly.

[0010] In some embodiments, the first driving assembly comprises any one of a pneumatic cylinder, an electric cylinder and a hydraulic cylinder.

[0011] In some embodiments, the support rod and the connecting rod connected with the support rod are coplanar, and the moving tracks of the support rod and the connecting rod are both limited in the plane.

[0012] In the second aspect, an embodiment of the present application provides a blind pipe brushing device, which comprises a material conveying pipe, a brush head and a support frame as described in any one of the embodiments of the first aspect. The brush head is located at one end of the material conveying pipe. The support frame is arranged on the material conveying pipe.

[0013] In some embodiments, the brush head is internally hollow and forms a material storage cavity. The first end of the brush head is hingedly connected with the material conveying pipe. The brush head has a brushing surface which matches the shape of the inner surface of the blind pipe to be brushed. A plurality of material outlet holes are arranged on the brushing surface of the arc-shaped brush head and are in communication with the material storage cavity.

[0014] The blind pipe brushing device further comprises a sliding member, a connecting member and a second driving assembly. The sliding member is sleeved on the material conveying pipe. The connecting member is hingedly connected with the sliding member and the brush head at two ends respectively. The second driving assembly is in driving connection with the sliding member and is configured to drive the sliding member to move along the axial direction of the material conveying pipe so as to drive the brush head to rotate around the first end.

[0015] In some embodiments, the plurality of material outlet holes are arranged in an array on the brushing surface. The blind pipe brushing device further comprises a brushing layer which is made of porous flexible material and is arranged on the brushing surface.

[0016] The support for the blind pipe brushing device and the blind pipe brushing device provided by the embodiment of the application have at least one support assembly, the support assembly comprises a fixed shaft sleeve, at least three support rods, a sliding shaft sleeve, at least three connecting rods and a first driving assembly; under the driving of the first driving assembly, the sliding shaft sleeve moves forward along the axis of the conveying pipe by a preset distance, the support rods are opened to a preset angle through the connecting rods, and the support rods abut against the inner wall of the blind pipe; and since each support assembly comprises at least three support rods which are uniformly arranged on the outer sidewall of the fixed shaft sleeve in the circumferential direction, the conveying pipe is ensured to be in a stable state and the position of the conveying pipe is ensured to be not displaced during the brushing process, and then the stability of the brush head and the accuracy of the position of the brush head are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:

[0018] Figure 1 Fig. 1 shows a front view of the support for the blind pipe brushing device provided by an embodiment of the application.

[0019] Figure 2 Fig. 2 shows a perspective view of the support for the blind pipe brushing device provided by an embodiment of the application.

[0020] Figure 3 Fig. 3 shows another perspective view of the support for the blind pipe brushing device provided by an embodiment of the application.

[0021] Figure 4 Fig. 4 shows a partial structure schematic view of the transmission rod of the support for the blind pipe brushing device provided by an embodiment of the application.

[0022] Figure 5 Fig. 5 shows another partial structure schematic view of the transmission rod of the support for the blind pipe brushing device provided by an embodiment of the application.

[0023] Figure 6 Fig. 6 shows a front view of the blind pipe brushing device provided by an embodiment of the application.

[0024] Figure 7 Fig. 7 shows a partial structure schematic view of the brush head of the blind pipe brushing device provided by an embodiment of the application.

[0025] Figure 8 Fig. 8 shows a partial structure schematic view of the arc-shaped brush head and the conveying pipe of the blind pipe brushing device provided by another embodiment of the application.

[0026] Figure 9It is shown that the arc-shaped brush head of the blind pipe brush coating device provided by an embodiment of the application is close to one end of the material conveying pipe.

[0027] Figure 10 It is shown that the one-way valve working state diagram of the blind pipe brush coating device provided by an embodiment of the application in the case of conveying and withdrawing paint.

[0028] Reference signs:

[0029] 1, material conveying pipe; 2, brush head; 201, discharge hole; 3, fixed shaft sleeve; 4, support rod; 5, sliding shaft sleeve; 6, connecting rod; 7, first driving assembly; 8, universal wheel; 9, transmission rod; 10, sliding piece; 11, connecting piece; 12, second driving assembly; 13, paint recovery groove; 14, one-way valve. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0031] The specific structure of the support for the blind pipe brush coating device will be described below in combination with the embodiments.

[0032] According to the inventive concept of one aspect of the application, a support for a blind pipe brush coating device is provided, such as Figures 1 to 5 As shown, the blind pipe brush coating device comprises a material conveying pipe 1 and a brush head 2 located at one end of the material conveying pipe, and the support comprises at least one set of support assemblies. The support assembly comprises a fixed shaft sleeve 3, at least three support rods 4, a sliding shaft sleeve 5, at least three connecting rods 6 and a first driving assembly 7. The fixed shaft sleeve 3 is fixedly installed on the material conveying pipe 1, one end of each support rod 4 is hingedly connected to the outer side wall of the fixed shaft sleeve 3, and the at least three support rods 4 are evenly arranged on the outer side wall of the fixed shaft sleeve 3 in the circumferential direction; the sliding shaft sleeve 5 is slidably sleeved on the material conveying pipe 1; one end of each connecting rod 6 is hingedly connected to one support rod 4, and the other end is hingedly connected to the outer side wall of the sliding shaft sleeve 5; the first driving assembly 7 is in transmission connection with the sliding shaft sleeve 5, and the first driving assembly 7 is configured to drive the sliding shaft sleeve 5 to move along the axis direction of the material conveying pipe 1 to expand or retract the support rods 4.

[0033] In order to facilitate the description of the blind pipe brush coating device provided by the embodiments of the application, the Figure 1 directions thereof will be defined, as shown in Figure 1 the front end of the material conveying pipe 1 close to the brush head 2 is defined as the front end, and the end away from the brush head 2 is defined as the rear end.

[0034] In this embodiment, the paint in the feeding pipe 1 is delivered to the brush head 2 to brush the arc surface of the inner wall of the blind pipe. The number of support assemblies can be adjusted according to the length of the blind pipe, but generally, at least one set of support assemblies is provided. The fixed shaft sleeve 3 is fixed relative to the feeding pipe 1, and the sliding shaft sleeve 5 slides along the axial direction of the feeding pipe 1. Preferably, for a general blind pipe, the number of support assemblies is 2-4.

[0035] The working principle of the support frame in this embodiment is as follows: when the output end of the first driving assembly 7 extends to the front end, the sliding shaft sleeve 5 moves forward along the axial direction of the feeding pipe 1 by a preset distance under the driving of the first driving assembly 7. Since one end of the connecting rod 6 is hinged to the support rod 4, and the other end is hinged to the outer side wall of the sliding shaft sleeve 5, when the sliding shaft moves forward, the included angle between the connecting rod 6 and the feeding pipe 1 will increase to a preset first angle, thereby opening the support rod 4 hinged to one end of the connecting rod 6 to a preset second angle. At this time, the end of the support rod 4 away from the fixed shaft sleeve 3 abuts against the inner wall of the blind pipe. Since the support assembly includes at least three support rods 4 and at least three connecting rods 6, and the at least three support rods 4 are uniformly arranged on the outer side wall of the fixed shaft sleeve 3 in the circumferential direction, the at least three support rods 4 abut against the inner wall of the blind pipe from multiple directions, so that the feeding pipe 1 can stably be located at the intersection of the at least three support rods 4, i.e., the blind pipe axis, and further make the feeding pipe 1 stably be located at the blind pipe axis at three axial points.

[0036] Finally, the feeding pipe 1 is ensured to be in a stable state and not to be displaced during the brushing process, thereby ensuring the stability and accuracy of the position of the brush head 2 during the brushing process. The problems of shaking of the brush head 2 and difficulty in keeping the rotation center of the brush head 2 consistent with the blind pipe axis during brushing of the arc surface of the blind pipe are solved.

[0037] In some embodiments, the number of support rods 4 is preferably three, which can stably support the feeding pipe 1 and is convenient to use.

[0038] After brushing once, the support frame needs to be withdrawn from the blind pipe. When the support frame is withdrawn, the principle is as follows: the output end of the first driving assembly 7 is retracted to the rear end, and the sliding shaft sleeve 5 moves backward along the axial direction of the feeding pipe 1 by a preset distance under the driving of the first driving assembly 7. Since one end of the connecting rod 6 is hinged to the support rod 4, and the other end is hinged to the outer side wall of the sliding shaft sleeve 5, when the sliding shaft sleeve 5 is retracted, the included angle between the connecting rod 6 and the feeding pipe 1 will gradually decrease, thereby reducing the axial included angle between the support rod 4 hinged to one end of the connecting rod 6 and the fixed shaft sleeve 3, until the end of the support rod 4 away from the fixed shaft sleeve 3 is separated from the inner wall of the blind pipe, and until the support rod 4 is retracted.

[0039] It should be noted that the preset distance needs to be adaptively set according to the length of the connecting rod 6, the length of the supporting rod 4, the inner diameter of the blind pipe and the like; when it is required to brush and coat blind pipes with different inner diameters, the opening and closing degree of the supporting rod 4 can be flexibly adjusted by adjusting the preset distance, so as to adapt to blind pipes with different diameters. This design not only improves the universality of the brushing and coating device, but also avoids the problems of uneven brushing and coating and damage of the device caused by mismatching of the pipe diameter.

[0040] The support for the blind pipe brushing and coating device in the embodiment ensures that the brush head can stably adhere to the inner wall of the blind pipe for brushing and coating operation, without manual lifting of the support at all times, thereby reducing labor intensity.

[0041] In some embodiments, the support further comprises a universal wheel 8 arranged on the supporting rod 4 away from the fixed shaft sleeve 3. The universal wheel 8 is made of PVC. Since each supporting rod 4 is provided with a universal wheel 8 away from the fixed shaft sleeve 3, the entire support can be moved more flexibly and conveniently inside the blind pipe, thereby reducing operation difficulty and labor intensity. In addition, the arrangement of the universal wheel 8 can also avoid misalignment when the support is moved to the target position.

[0042] In some embodiments, as shown in Figures 1 to 3 , the number of the first driving assemblies 7 is consistent with the number of the sliding shaft sleeves 5, and each first driving assembly 7 is in transmission connection with one sliding shaft sleeve 5. In this way, independent control of each supporting assembly can be achieved, thereby improving the flexibility and accuracy of the support.

[0043] In some embodiments, the first driving assembly is fixedly installed on the conveying pipe, so that the conveying pipe can be moved together without occupying additional space.

[0044] In other embodiments, as shown in Figure 4 and Figure 5 , the first driving assembly 7 is fixedly installed on the conveying pipe 1. The support further comprises a transmission rod 9 connected with the first driving assembly 7, and the transmission rod 9 is connected with the three sliding shaft sleeves 5 respectively. When the first driving assembly 7 is stretched forward, the transmission rod 9 is also stretched forward, and since the transmission rod 9 is connected with the three sliding shaft sleeves 5 respectively, the three sliding shaft sleeves 5 are also slid forward respectively, and the three groups of supporting rods 4 are synchronously opened. Similarly, when the first driving assembly 7 is retracted backward, the transmission rod 9 is also retracted backward, thereby driving the three sliding shaft sleeves 5 to slide backward respectively, and the three groups of supporting rods 4 are synchronously retracted. In this way, only one first driving assembly 7 is required to complete the synchronous operation of the supporting assemblies, which not only simplifies the structure and reduces the manufacturing cost, but also facilitates maintenance and operation and reduces the failure rate.

[0045] In some embodiments, the first driving assembly 7 comprises any one of the following: a pneumatic cylinder, an electric cylinder, a hydraulic cylinder. According to the working environment and conditions, the first driving assembly 7 of different types can be selected, so that the support has higher versatility and adaptability.

[0046] In some embodiments, the support rod 4 and the connecting rod 6 connected therewith are coplanar, and the moving tracks of the support rod 4 and the connecting rod 6 are both limited in the plane. In this way, it can be ensured that the conveying pipe 1 can be always kept in the state of axis upward during the brushing of the paint, so as to ensure the uniformity and stability of the paint. When adjusting the opening and closing degree of the support rod 4, the stability and accuracy of the support assembly can also be ensured, and the failure or damage caused by improper operation can be avoided.

[0047] The specific structure of the blind pipe brushing device will be described below in combination with embodiments.

[0048] Referring to Figure 6 According to the inventive concept of the other aspect of the present application, a blind pipe brushing device is provided, comprising a conveying pipe 1, a brush head 2 and the support described in the foregoing embodiments; wherein the brush head 2 is located at one end of the conveying pipe 1, and the support is arranged on the conveying pipe 1.

[0049] In some embodiments, the brush head 2 is internally hollow and forms a storage cavity, the first end of the brush head 2 is hingedly connected with the conveying pipe 1, the brush head 2 has a brushing surface matched with the shape of the inner surface of the blind pipe to be brushed, a plurality of discharge holes are formed in the brushing surface of the brush head 2 and communicate with the storage cavity; the blind pipe brushing device further comprises a sliding member 10, a connecting member 11 and a second driving assembly 12. The sliding member 10 is sleeved on the conveying pipe 1. The connecting member 11 is hingedly connected with the sliding member 10 and the brush head 2 at two ends. The second driving assembly 12 is drivingly connected with the sliding member 10, and the second driving assembly 12 is configured to drive the sliding member 10 to move along the axis direction of the conveying pipe 1, so as to rotate the brush head 2 about the first end.

[0050] As described above, the conveying pipe 1 is used for conveying paint, and the brush head 2 is fitted with the surface to be brushed in the blind pipe under the driving of the driving assembly. In this way, by hingedly connecting the brush head 2 matched with the arc surface in the blind pipe with the front end of the conveying pipe 1, and opening or retracting the brush head 2 by cooperating the second driving assembly 12, the sliding member 10 and the connecting member 11, the arc surface part in the blind pipe can be conveniently and quickly brushed, and the uniformity of the arc surface brushing is improved.

[0051] In the using process, the front end of the conveying pipe 1 is inserted into the blind pipe, and in this process, the brush head 2 keeps a substantially parallel state with the conveying pipe 1, that is, the sliding member 10 slides to the position farthest from the front end of the conveying pipe 1, at this time, the connecting member 11 is fitted with the conveying pipe 1, and in this process, the brush head 2 is in the retracted state.

[0052] After the feeding pipe 1 extends to the preset position inside the blind pipe, the second driving assembly 12 is started, the output end of the second driving assembly 12 drives the sliding piece 10 to slide to the front end, the connecting piece 11 is driven to rotate the brush head 2 around the front end of the feeding pipe 1, and the brush head 2 is gradually opened to the preset position, at this time, the brushing surface of the brush head 2 is attached to the arc surface of the blind pipe or is arranged at equal intervals. Specifically, the front end of the feeding pipe 1 can be directly extended to the bottom of the blind pipe in one step, and then the second driving assembly 12 drives the brush head 2 to open to the arc surface of the blind pipe; or the front end of the feeding pipe 1 can be extended to a position close to the bottom of the blind pipe, for example, the front end of the device is 1-10 mm away from the bottom of the blind pipe, and then the second driving assembly 12 drives the brush head 2 to open to the preset position, at this time, the brushing surface of the brush head 2 is arranged at equal intervals from the arc surface inside the blind pipe, and finally the feeding pipe 1 is further extended until the brush head 2 is attached to the arc surface inside the blind pipe.

[0053] The coating is delivered to the brush head 2 through the feeding pipe 1, the coating flows out through the discharge holes arranged on the brushing surface, the feeding pipe 1 is rotated to drive the brush head 2 to rotate around the axis of the feeding pipe 1 for one circle, and the coating is uniformly brushed on the arc surface part of the blind pipe.

[0054] According to some embodiments of the present application, after the brush head 2 completes one brushing operation, the blind pipe brushing device can be retracted, that is, the blind pipe brushing device is pulled out of the inside space of the blind pipe, and after the coating is dried, the foregoing operation is repeated for secondary brushing or multiple times until the requirements for the thickness and uniformity of the coating are met.

[0055] In some embodiments, the bottom of the inner side wall of the blind pipe is generally arc-shaped, and correspondingly, the brush head 2 is an arc-shaped brush head.

[0056] According to some embodiments of the present application, after the brushing operation of the arc surface inside the blind pipe is completed, drying is performed, and then spraying of the inner wall of the blind pipe can be performed, and this part of the content will not be described in detail.

[0057] In some embodiments, the plurality of discharge holes are arranged in an array on the brushing surface, and the blind pipe brushing device further comprises a brushing layer, the brushing layer is of a porous flexible material, and the brushing layer is arranged on the brushing surface.

[0058] In the present embodiment, the coating delivered to the brush head 2 flows into the inside of the brushing layer through the discharge holes, and the coating is uniformly diffused and distributed in the inside of the brushing layer by virtue of the porous property of the brushing layer, so that the coating can be uniformly brushed on the arc surface inside the blind pipe.

[0059] According to some embodiments of the present application, the material of the brushing layer can be porous polyurethane or sponge.

[0060] Figure 7Fig. 1 shows a partial structure schematic view of a brush head of a blind pipe brushing device according to an embodiment of the present application.

[0061] According to some embodiments of the present application, as shown in Fig. 1, Figure 7 As shown in Fig. 1, the blind pipe brushing device further comprises a paint recovery groove 13, which is arranged at the output end (i.e., the front end) of the material conveying pipe 1, and is arranged adjacent to the first end (the end close to the material conveying pipe) of the brush head. The paint recovery groove 13 is configured to recover the paint dripping from the brushing layer.

[0062] In the present embodiment, during the brushing process of the brush head 2, the brushing layer is extruded, and part of the paint may gather at the edge region of the brushing layer. After the brush head completes a brushing operation, the paint flows downward and gathers under the action of gravity. In order to prevent the gathered paint from dripping into the blind pipe and polluting the inner side wall of the blind pipe, the paint recovery groove 13 is arranged at the front end of the material conveying pipe 1 to recover the part of the gathered paint.

[0063] According to some embodiments of the present application, the plurality of discharge holes 201 are arranged in an array on the brushing surface of the brush head 2.

[0064] In the present embodiment, the plurality of discharge holes 201 are arranged in an m*n array on the brushing surface of the brush head 2 to ensure that the paint can uniformly enter the brushing layer, and m and n are both integers greater than 1.

[0065] According to some embodiments of the present application, as shown in Fig. 1, Figure 7 As shown in Fig. 1, the arc-shaped brush head 2 comprises a second end opposite to the first end, and the plurality of discharge holes 201 are arranged on the brushing surface close to the second end.

[0066] In the present embodiment, by optimizing the opening position of the discharge hole 201, specifically, no discharge hole 201 is arranged close to the end of the material conveying pipe 1 on the brushing surface, which can avoid the high-pressure paint directly spraying out of the discharge hole 201. Specifically, the discharge hole 201 is arranged at a non-bottom region of the brushing surface. During the conveying process, the paint changes from a horizontal transmission state to a vertical transmission state through the diversion of the conveying pipe-brush head 2, and then is output through the discharge hole 201 after conveying for a certain height, which greatly reduces the risk of paint spraying out of the bottom discharge hole and ensures that the paint enters the brushing layer more uniformly. It should be noted that, in the present embodiment, the bottom refers to the end close to the material conveying pipe 1 when the brush head 2 is in an open state and is located in a vertical state.

[0067] Figure 8 Fig. 1 shows a partial structure schematic view of an arc-shaped brush head 2 and a material conveying pipe 1 of a blind pipe brushing device according to another embodiment of the present application, Figure 9Fig. 2 shows a sectional view of an arc-shaped brush head 2 of the blind pipe brushing device according to an embodiment of the present application, wherein the arc-shaped brush head 2 is close to one end of a material conveying pipe 1. Figure 10 Fig. 3 shows a working state diagram of a one-way valve 14 of the blind pipe brushing device according to an embodiment of the present application in the case of conveying and withdrawing paint.

[0068] According to some embodiments of the present application, Figures 8 to 10 As shown, a plurality of discharge holes 201 are arranged on the entire brushing surface, and the brush head 2 further comprises a one-way valve 14 arranged on the discharge hole 201 close to the first end in the storage cavity, wherein the one-way valve 14 is configured to be closed in response to the positive pressure state in the storage cavity and to be opened in response to the negative pressure state in the storage cavity.

[0069] In the present embodiment, when the material conveying pipe 1 inputs paint into the storage cavity, as shown in (a) of Figs. 4 and 5, Figure 9 and Figure 10 the arrow in the figure represents the flow direction of the paint, the pressure in the storage cavity is in a positive pressure state, under the action of the pressure, the one-way valve 14 is closed, the one-way valve 14 is attached to the discharge hole 201, and the paint cannot be sprayed out (flow out) through the discharge hole 201; when the material conveying pipe 1 withdraws the paint, as shown in (b) of Figs. 4 and 5, Figure 9 and Figure 10 the arrow in the figure represents the flow direction of the paint, the storage cavity is in a negative pressure state, under the action of the pressure, the one-way valve 14 is opened, the discharge hole 201 is connected, at this time, the residual paint on the brushing layer outside the discharge holes 201 can be sucked back into the storage cavity through the discharge holes 201, and then be withdrawn, thereby preventing the residual paint on the brushing layer in the region from affecting the subsequent brushing operation, and preventing the residual paint from gathering and dripping in the blind pipe.

[0070] According to some embodiments of the present application, the discharge hole 201 is obliquely arranged on the brushing surface, and the axis of the discharge hole 201 is inclined to the first end, wherein the discharge hole 201 is configured to be in a vertical state relative to the arc-shaped brush head 2, and the residual paint in the brushing layer can flow back to the storage cavity along the discharge hole 201 under the action of gravity.

[0071] In the present embodiment, by adjusting the arrangement direction of the discharge hole 201, by increasing the length of the liquid flow, by increasing the resistance of the liquid in the flow process, by improving the efficiency of the paint flowing back to the storage cavity, the residual paint in the brushing layer can be more smoothly and completely recycled, the working efficiency is improved, and the precision and controllability of the brushing operation are improved.

[0072] According to some embodiments of the present application, the diameter of the discharge hole 201 increases with the distance from the first end; and / or the number of discharge holes 201 arranged on the brushing surface increases with the distance from the first end.

[0073] In the embodiment, the areas swept (painted) by the different height sections of the brush head 2 are not the same, the closer to the end of the material conveying pipe, the smaller the swept (painted) area, and the less the amount of paint consumed. Based on this, the number, aperture, spacing and other parameters of the discharge holes 201 on the painted surface of the brush head 2 are adjusted, so that the paint flowing out of the painted layers at different positions is not the same, but the thickness of the paint layer formed in the swept (painted) area is substantially the same, thereby ensuring more uniform painting.

[0074] In the embodiments of the present disclosure, if not specifically limited, the form of connection can be detachable connection through bolts and nuts, screws, buckles, magnetic attraction and the like. In some connections, if there is no special requirement for the form of detachable cooperation, it can be connected in a non-detachable manner through welding, bonding and the like.

[0075] The above describes the basic principles of the present application in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the present application are only examples and not limitations, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the present application. In addition, the above specific details are only for the purpose of example and for the purpose of understanding, and are not limited to the present application, which must use the above specific details to realize.

[0076] The block diagrams of the devices, apparatuses, equipment, systems involved in the present application are only illustrative examples and are not intended to require or imply that the connection, arrangement, configuration must be as shown in the block diagram. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged, configured in any manner. Words such as "include", "contain", "have" and the like are open-ended words, mean "include but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0077] It should also be noted that in the devices, equipment and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application.

[0078] The above description of the disclosed aspects is provided so that any person skilled in the art can make or use the present application. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but is intended to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

[0079] The foregoing description has been presented for the purposes of illustration and description. Furthermore, the description is not intended to limit the embodiments of the application to the forms disclosed herein. Although the above discussion has focused on various example aspects and embodiments, those skilled in the art will recognize certain modifications, permutations, additions, and sub-combinations thereof.

Claims

1. A carrier for a blind tube brushing apparatus, characterized in that, The blind pipe brushing device comprises a feeding pipe, and the support comprises: at least one set of support assemblies arranged on the feeding pipe, the support assemblies comprising: a fixed shaft sleeve fixedly mounted on the feeding pipe; at least three support rods, one end of each of the support rods being hingedly connected to the outer sidewall of the fixed shaft sleeve, and the at least three support rods being evenly arranged on the outer sidewall of the fixed shaft sleeve in a circumferential direction; a sliding shaft sleeve slidably sleeved on the feeding pipe; at least three connecting rods, one end of each of the connecting rods being hingedly connected to one of the support rods, and the other end of each of the connecting rods being hingedly connected to the outer sidewall of the sliding shaft sleeve; a first driving assembly in driving connection with the sliding shaft sleeve, the first driving assembly being configured to drive the sliding shaft sleeve to move along the axis direction of the feeding pipe so as to extend or retract the support rods.

2. The stent of claim 1, wherein Further comprising: universal wheels arranged on the support rods away from the fixed shaft sleeve.

3. The stent of claim 1, wherein The number of the first driving assemblies is consistent with the number of the sliding shaft sleeves, and each of the first driving assemblies is in driving connection with one of the sliding shaft sleeves.

4. The stent of claim 3, wherein The first driving assemblies are fixedly mounted on the feeding pipe.

5. The stent of claim 1, wherein Further comprising: driving rods respectively connected with the at least two sliding shaft sleeves, the driving rods being connected with the first driving assembly.

6. The stent defined in Claim 1, wherein, The first driving assembly comprises any one of a pneumatic cylinder, an electric cylinder, and a hydraulic cylinder.

7. The stent defined in Claim 1, wherein The support rods and the connecting rods hingedly connected to the support rods are coplanar, and the moving tracks of the support rods and the connecting rods are both limited in the plane.

8. A blind tube brushing apparatus characterized by, Comprise: a feeding pipe; a brush head located at one end of the feeding pipe; the support according to any one of claims 1 to 7 is arranged on the feeding pipe.

9. The blind tube brushing apparatus of claim 8, wherein, The brush head is internally hollow and forms a storage cavity, a first end of the brush head is hingedly connected to the feeding pipe, the brush head has a brushing surface matching the shape of the inner surface of the blind pipe to be brushed, the brushing surface of the brush head is provided with a plurality of discharge holes, and the discharge holes are in communication with the storage cavity; The blind pipe brushing device further comprises: a sliding member sleeved on the feeding pipe; a connecting member hingedly connected to the sliding member and the brush head at two ends; a second driving assembly in driving connection with the sliding member, the second driving assembly being configured to drive the sliding member to move along the axis direction of the feeding pipe so as to rotate the brush head about the first end.

10. The blind tube brushing apparatus of claim 9, wherein, The plurality of discharge holes are arranged in an array on the brushing surface, and the blind pipe brushing device further comprises: a brushing layer made of porous flexible material, the brushing layer being arranged on the brushing surface.

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