Sand blasting and paint spraying protection device for valve

Abstract

The utility model relates to the technical field of valve pipelines, and aims to provide a sand-blasting and paint-spraying protection device for a valve. The sand-blasting and paint-spraying protection device for the valve can be used for the inner diameters of pipelines with various sizes and specifications. The valve sand blasting and paint spraying protection device comprises a protection plate, a pre-tightening piece, a positioning assembly and an operation piece. The pre-tightening piece is arranged on one side of the protection plate, and the size of the pre-tightening piece is evenly decreased from the end away from the protection plate to the end close to the protection plate. The outer wall face of the pre-tightening piece is attached to the inner wall face of the positioning assembly, the positioning assembly comprises a plurality of positioning blocks arranged around the axis of the valve pipeline, the positioning blocks are slidably connected with the protection plate, and the sliding direction is in the radial direction of the valve pipeline. One end of the operating piece penetrates through the protection plate and is connected with the pre-tightening piece. The utility model aims to solve the problems that a valve sand-blasting and paint-spraying protection device in the prior art can only meet the requirement of the inner diameter of a pipeline with a single size and is small in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of valve pipelines, in particular to a valve sandblasting and paint spraying protective device. Background Art

[0002] During the production process, valves often need to be processed with surface treatment processes such as sandblasting and painting. However, the internal channels and grooves of the valves do not need to be sandblasted or painted, because sandblasting will cause these parts to be damaged by sand particles, and painting will cause paint to accumulate in these parts, which will affect the subsequent production and installation as well as the product's qualification rate. Therefore, the internal channels and grooves of the valves are generally shielded and protected during sandblasting and painting to prevent sand particles or paint spray from entering.

[0003] The existing valve sandblasting and painting protection device mainly includes: an elastomer, a column, a protection plate and a pull rod. The elastomer is arranged on the protection plate, and a channel is left in the middle of the elastomer. One end of the pull rod passes through the protection plate and the channel in turn to connect with the column. When in use, the elastomer and the column are allowed to enter the valve channel, the protection plate fits with the end face of the valve, and then the pull rod is rotated to make the column move in the middle of the elastomer, and the elastomer is squeezed from the inside so that the outside of the elastomer fits with the inner wall of the valve channel, so that the valve pipeline can be protected during sandblasting and painting. However, this device can only meet the use of a single size of pipe inner diameter, and its application range is small. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect that the valve sandblasting and painting protection device in the prior art can only meet the use of a single size of pipe inner diameter and has a small scope of application, thereby providing a valve sandblasting and painting protection device that can meet the use of pipe inner diameters of various sizes and specifications.

[0005] In order to solve the above problems, the utility model provides a valve sandblasting and painting protection device, comprising:

[0006] Protective plate;

[0007] A pre-tightening member, the pre-tightening member is arranged on one side of the protective plate, and the size of the pre-tightening member decreases uniformly from an end away from the protective plate to an end close to the protective plate;

[0008] A positioning assembly, wherein the outer wall surface of the pre-tightening member is fitted with the inner wall surface of the positioning assembly, and the positioning assembly comprises a plurality of positioning blocks arranged around the axis of the valve pipeline, the positioning blocks are slidably connected to the protective plate, and the sliding direction is along the radial direction of the valve pipeline;

[0009] An operating member, one end of which passes through the protective plate and is connected to the pre-tightening member.

[0010] Optionally, the preload member is in the shape of a truncated cone.

[0011] Optionally, the positioning assembly includes four positioning blocks.

[0012] Optionally, the pre-tightening member is in the shape of a right prism, and the number of the positioning blocks is equal to the number of the side edges of the right prism.

[0013] Optionally, an annular groove is formed on the outer wall surface of the positioning component, and an elastic connecting piece is arranged in the annular groove.

[0014] Optionally, the elastic connecting member is an O-shaped rubber sealing ring.

[0015] Optionally, the operating member includes a connecting rod and an operating handle, one end of the connecting rod is connected to the preload member, and the other end of the connecting rod is connected to the operating handle.

[0016] Optionally, an internal thread is provided at one end of the preload member close to the protective plate, an external thread is provided at one end of the connecting rod away from the operating handle, and the preload member and the operating member are connected via the internal thread and the external thread.

[0017] Optionally, the protective plate is a circular plate, and the diameter of the circular plate is larger than the diameter of the valve pipe.

[0018] Optionally, a through hole is opened at the center of the protective plate, and the operating member passes through the through hole to be connected with the pre-tightening member.

[0019] The utility model has the following advantages:

[0020] 1. The valve sandblasting and painting protection device provided by the utility model comprises: a protection plate, a pre-tightening member, a positioning assembly and an operating member. The pre-tightening member is arranged on one side of the protection plate, and the size of the pre-tightening member decreases uniformly from one end away from the protection plate to one end close to the protection plate, and the outer wall surface of the pre-tightening member fits with the inner wall surface of the positioning assembly. The positioning assembly comprises a plurality of positioning blocks arranged around the axis of the valve pipeline, and the positioning blocks are slidably connected with the protection plate and the sliding direction is along the radial direction of the valve pipeline. One end of the operating member passes through the protection plate and is connected with the pre-tightening member. Applying external force to the operating member then drives the pre-tightening member to move toward or away from the side of the protection plate, so that the outer wall surface of the positioning assembly fits with the inner wall of the valve pipeline to play a protective role. Since the size of the pre-tightening member decreases uniformly from one end away from the protection plate to one end close to the protection plate, when the pre-tightening member moves toward the side close to the protection plate, the pre-tightening member will push the positioning block to diffuse outward, and the outer diameter of the positioning assembly as a whole will gradually increase. Therefore, this valve sandblasting and painting protection device can adapt to the use of valve pipelines of different pipe diameters as the position of the pre-tightening member changes.

[0021] 2. The valve sandblasting and painting protection device provided by the utility model has an annular groove formed on the outer wall surface of the positioning component, and an elastic connector is arranged in the annular groove. The elastic connector can restrain each positioning block, and the elastic connector can preferably be an O-ring rubber sealing ring, which can also seal the inside of the valve pipeline, thereby achieving a better protection effect.

[0022] 3. The valve sandblasting and painting protection device provided by the utility model comprises an operating part including a connecting rod and an operating handle, one end of the connecting rod is connected to the preloaded part, and the other end is connected to the operating handle. The operating handle is provided to facilitate the manipulation of the operating part, thereby improving the convenience of use. In addition, an internal thread is provided at one end of the preloaded part close to the protective plate, and an external thread is provided at one end of the connecting rod away from the operating handle, and the preloaded part and the operating part are connected by the internal thread and the external thread. When in use, the position of the preloaded part can be adjusted by rotating the connecting rod, and the adjustment accuracy is also relatively high.

[0023] 4. The valve sandblasting and paint spraying protection device provided by the utility model has a protective plate which is a circular plate, and the diameter of the circular plate is larger than the diameter of the valve pipe, so that the protective plate can play a protective role, blocking sand particles and paint spray from entering the valve pipe, and the protective effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a schematic diagram of the valve sandblasting and painting protection device of the utility model;

[0026] Figure 2 It is a schematic diagram of the positioning component in the valve sandblasting and painting protection device of the utility model;

[0027] Figure 3 This is a schematic diagram of the valve sandblasting and painting protection device of the utility model being applied to the valve pipeline;

[0028] Figure 4 This is a schematic diagram of the valve sandblasting and painting protection device of the utility model being applied to a blind hole.

[0029] Description of reference numerals:

[0030] 1. Protective plate;

[0031] 2. Preload parts;

[0032] 301, positioning block;

[0033] 4. operating member, 401, connecting rod, 402, operating handle;

[0034] 5. Elastic connector. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] like Figures 1 to 4 As shown, it is a preferred embodiment of the valve sandblasting and painting protection device of the utility model. This valve sandblasting and painting protection device can meet the use of valves and pipelines with different pipe diameters, has a wide range of applications, and has high recycling value.

[0040] The above-mentioned valve sandblasting and painting protection device includes: a protection plate 1, a pre-tightening member 2, a positioning assembly and an operating member 4. The pre-tightening member 2 is arranged on one side of the protection plate 1, and the size of the pre-tightening member 2 decreases uniformly from the end away from the protection plate 1 to the end close to the protection plate 1. The outer wall surface of the positioning assembly fits with the valve pipeline, and the inner wall surface of the positioning assembly matches and fits with the shape of the outer wall surface of the pre-tightening member 2. The positioning assembly includes a plurality of positioning blocks 301 arranged around the axis of the valve pipeline, and the positioning blocks 301 are slidably connected to the protection plate 1 and the sliding direction is along the radial direction of the valve pipeline. One end of the operating member 4 passes through the protection plate 1 and is connected to the pre-tightening member 2. External force applied to the operating member 4 can drive the pre-tightening member 2 to move toward or away from the protection plate 1. When in use, the pre-tightening member 2 and the positioning assembly are located in the valve pipeline, and the protection plate 1 is located outside the valve pipeline and fits with the end face of the valve pipeline. The control operating part 4 drives the pre-tightening part 2 to move, so that the outer wall of the positioning component fits with the valve pipe. In this way, during sandblasting or painting, the shielding of the protective plate 1 and the sealing of the valve pipe by the positioning component can prevent sand or paint spray from entering the valve pipe. In addition, since the size of the pre-tightening part 2 decreases evenly from the end away from the protective plate 1 to the end close to the protective plate 1, when the pre-tightening part 2 moves toward the side close to the protective plate 1, the pre-tightening part 2 will push the positioning block 301 to diffuse outward, and the outer diameter of the positioning component as a whole will gradually increase, so this device can meet the use of valve pipes of different pipe diameters.

[0041] Specifically, the protection plate 1 is a circular plate, and the diameter of the circular plate is larger than the diameter of the valve pipe, that is, the area of ​​the protection plate 1 is larger than the cross-sectional area of ​​the valve pipe, so that it can play a shielding role.

[0042] Of course, in other embodiments, the protection plate 1 may also be a plate of other shapes such as a square plate, as long as the area of ​​the plate is larger than the cross-sectional area of ​​the valve pipe.

[0043] In addition, a through hole is opened at the center of the protective plate 1 to facilitate the operating member 4 to pass through the protective plate 1 and connect with the preload member 2. The aperture of the through hole should not be too large to prevent sand or paint spray from entering the valve pipe through the through hole.

[0044] Furthermore, in this embodiment, the preload member 2 is truncated cone-shaped, and its axis is colinear with the axis of the through hole. The dimension of the preload member 2 at one end away from the protective plate 1 is larger than the dimension at the end close to the protective plate 1. When the preload member 2 moves, it can drive the positioning block 301 to move uniformly inward or outward. The positioning assembly includes four positioning blocks 301, and the four positioning blocks 301 have exactly the same shape and size, and the inner wall surfaces of the four positioning blocks 301 are always in contact with the outer wall surface of the preload member 2. When the four positioning blocks 301 diffuse outward under the guidance of the preload block, the gap between adjacent positioning blocks 301 becomes larger. When the four positioning blocks 301 shrink inward, the gap between adjacent positioning blocks 301 becomes smaller.

[0045] In other embodiments, the number of the positioning blocks 301 may also be three, four, etc.

[0046] In other embodiments, the preload member 2 may also be in the shape of a right prism, such as a right triangular prism, a right quadrangular prism, etc. However, when the preload member 2 is in the shape of a prism, the number of positioning blocks 301 should be consistent with the number of side edges of the prism, so as to ensure that the inner wall surface of each positioning block 301 fits with the outer wall surface of the preload member 2.

[0047] Furthermore, an annular groove is formed on the outer wall surface of the positioning component, that is, the outer wall surface of each positioning block 301 is formed with a groove, and the grooves on multiple positioning blocks 301 are merged into an annular groove. The number of annular grooves can be one or more. In this embodiment, two annular grooves are arranged along the axial direction of the valve pipeline. An elastic connector 5 is arranged in the annular groove. Since the positioning block 301 will slide along the radial direction of the valve pipeline, it is necessary to arrange an elastic connector, and the multiple positioning blocks 301 can be constrained by the elastic connector 5. In this embodiment, the elastic connector 5 is preferably an O-shaped rubber sealing ring, so that when the positioning block 301 is in contact with the inner wall surface of the valve pipeline, the O-shaped rubber sealing ring can also perform sealing, thereby improving the protective effect of the device.

[0048] The operating member 4 includes a connecting rod 401 and an operating handle 402. One end of the connecting rod 401 is connected to the preload member 2, and the other end is connected to the operating handle 402. In addition, an external thread is provided at one end of the connecting rod 401 away from the operating handle 402, and an internal thread is provided at one end of the preload member 2 close to the protective plate 1. The preload member 2 and the operating member 4 are connected through the internal thread and the external thread. When in use, the preload member 2 can be driven to move through the matching thread by turning the operating handle 402. This operation method is more precise and accurate than the method of directly pulling the operating member 4 to drive the preload member 2 to move.

[0049] The following is the use process of the valve sandblasting and painting protection device provided in this embodiment:

[0050] Put the preload 2 and positioning assembly of the valve sandblasting and painting protection device into the valve pipe or blind hole, then fit the protection plate 1 with the end face of the valve pipe or blind hole, then rotate the operating member 4 to control the movement of the preload 2, so that the positioning member fits with the inner wall of the valve pipe or blind hole. Then you can do the sandblasting or painting work.

[0051] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A valve sandblasting and painting protection device, characterized in that: include: Protective plate (1); A pre-tightening member (2), wherein the pre-tightening member (2) is arranged on one side of the protective plate (1), and the size of the pre-tightening member (2) decreases uniformly from an end away from the protective plate (1) to an end close to the protective plate (1); A positioning assembly, wherein the outer wall surface of the preload member (2) is in contact with the inner wall surface of the positioning assembly, the positioning assembly comprises a plurality of positioning blocks (301) arranged around the axis of the valve pipeline, the positioning blocks (301) are slidably connected to the protection plate (1), and the sliding direction is along the radial direction of the valve pipeline; An operating member (4), one end of which passes through the protective plate (1) and is connected to the pre-tightening member (2).

2. The valve sandblasting and painting protection device according to claim 1 is characterized in that: The pre-tightening member (2) is in the shape of a truncated cone.

3. The valve sandblasting and painting protection device according to claim 2 is characterized in that: The positioning assembly comprises four positioning blocks (301).

4. The valve sandblasting and painting protection device according to claim 1 is characterized in that: The pre-tightening member (2) is in the shape of a right prism, and the number of the positioning blocks (301) is equal to the number of the side edges of the right prism.

5. The valve sandblasting and painting protection device according to claim 1 is characterized in that: An annular groove is formed on the outer wall surface of the positioning component, and an elastic connecting piece (5) is arranged in the annular groove.

6. The valve sandblasting and painting protection device according to claim 5 is characterized in that: The elastic connecting piece (5) is an O-shaped rubber sealing ring.

7. The valve sandblasting and painting protection device according to claim 1 is characterized in that: The operating member (4) comprises a connecting rod (401) and an operating handle (402); one end of the connecting rod (401) is connected to the preload member (2), and the other end is connected to the operating handle (402).

8. The valve sandblasting and painting protection device according to claim 7 is characterized in that: An end of the pre-tightening member (2) close to the protective plate (1) is provided with an internal thread, and an end of the connecting rod (401) away from the operating handle (402) is provided with an external thread, and the pre-tightening member (2) and the operating member (4) are connected via the internal thread and the external thread.

9. The valve sandblasting and painting protection device according to any one of claims 1 to 8, characterized in that: The protective plate (1) is a circular plate, and the diameter of the circular plate is greater than the diameter of the valve pipeline.

10. The valve sandblasting and painting protection device according to any one of claims 1 to 8, characterized in that: A through hole is provided at the center of the protective plate (1), and the operating member (4) passes through the through hole and is connected to the pre-tightening member (2).

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