CN220592810U - Manual quick assembly and disassembly sand blasting tool for preventing surface scratch of joint - Google Patents

Abstract

The utility model provides a manual quick assembly and disassembly sand blasting tool for preventing a joint surface from being scratched, which comprises a base, a plunger, an end cover and a positioning bead, wherein the plunger is arranged on the base; the end cover is arranged on the base, an end cover inner hole is formed in the inner center of the end cover, a joint to be sandblasted is arranged in the end cover inner hole, the plunger penetrates into the joint to be sandblasted, and the bottom is connected with the base in a positioning way through a positioning bead; the center of the top of the joint to be sandblasted is provided with a hole to be sandblasted, the plunger head is positioned below a sandblasted area of the hole to be sandblasted, and the center of the end cover is provided with an operation hole communicated with an inner hole of the end cover. The utility model can realize rapid sand blasting of the joint, and the phenomenon that sand scratches the joint can not occur in the sand blasting process, and the structure is small and exquisite, and the sand blasting is convenient.

Description

Manual quick assembly and disassembly sand blasting tool for preventing surface scratch of joint

Technical Field

The utility model relates to the technical field of joint sand blasting tools, in particular to a manual rapid assembly and disassembly sand blasting tool for preventing a joint surface from being scratched.

Background

In the process of pipeline joint, the inner hole of the joint part generally needs to be sprayed with dry film lubricant for use, and in order to increase the adhesive capability of the dry film lubricant, the region of the inner hole sprayed with the dry film lubricant needs to be subjected to a sand blasting pretreatment procedure. In the sand blasting process, the joint inner hole does not need to be covered by a plunger in a dry film coating area, the plunger is positioned and installed on a tool in the past by using threads, the screw threads are required to be screwed down and unscrewed in the use process, the operation efficiency is low, the service life is limited, and in addition, because fine sand grains of 80 meshes or below are used in the sand blasting process, the sand grains can remain in gaps among the tool, the joint and the plunger and the joint inner hole, so that the tool is difficult to detach, and the risk of scratching the joint surface can be caused. In order to improve the working efficiency of the joint sand blasting process and simultaneously prevent the risk of scratching the joint surface caused by sand storage in gaps on the structure, a manual rapid positioning sand blasting tool for preventing the joint surface from being scratched is needed.

Disclosure of Invention

According to the technical problem, the manual quick assembly and disassembly sand blasting tool for preventing the surface of the joint from being scratched is provided.

The utility model adopts the following technical means:

a manual quick assembly and disassembly sand blasting tool for preventing a joint surface from being scratched comprises a base, a plunger, an end cover and a positioning bead;

the end cover is arranged on the base, an end cover inner hole is formed in the center of the inside of the end cover, a joint to be sandblasted is placed in the end cover inner hole, and the lower part of the joint to be sandblasted is supported by the base;

the plunger is vertically arranged and is positioned in the inner hole of the end cover, the bottom end of the plunger is inserted into the center of the base and is connected with the base through the positioning bead positioned in the base, the top end of the plunger is provided with a plunger head, and the plunger head penetrates into the joint to be sandblasted;

the center of the top of the joint to be sandblasted is provided with a hole to be sandblasted, the plunger head is positioned below a sandblasted area of the hole to be sandblasted, the plunger head is in clearance fit with the hole to be sandblasted, and the minimum fit clearance is larger than the diameter of sand grains;

the center of the end cover is provided with an operation hole communicated with the inner hole of the end cover, and the top of the joint to be sandblasted abuts against the lower surface of the cover end of the end cover.

Preferably, the center of the upper surface of the base is provided with an upward protruding axial boss, an annular end cover supporting surface is formed around the base, and the end cover supporting surface is used for supporting the lower end surface of the end cover;

the axial boss is in clearance fit with the lower part of the end cover inner hole of the end cover;

the center of the axial boss is provided with a plunger insertion hole for inserting the plunger, the side wall of the axial boss is provided with a threaded hole, and the positioning bead is arranged in the threaded hole; the bottom of the plunger is provided with an arc-shaped positioning groove matched with the positioning bead.

Preferably, a positioning ejection hole communicating with the plunger insertion hole is formed at the center of the lower surface of the base, and the positioning ejection hole has a larger aperture than the plunger insertion hole.

Preferably, a plurality of planes are machined on the side wall of the axial boss.

Preferably, the axial boss is provided with a joint supporting and positioning groove, the bottom of the joint to be sandblasted is arranged in the joint supporting and positioning groove, the groove wall of the joint supporting and positioning groove is in clearance fit with the outer wall of the lower part of the joint to be sandblasted, and the fit clearance is larger than the diameter of sand grains.

The bottom of the joint supporting and positioning groove is provided with two concentric annular sand collecting grooves, and the two annular sand collecting grooves are respectively positioned on the inner side and the outer side of the outer wall of the lower part of the joint to be sandblasted.

Preferably, the upper part of the inner hole of the end cover is an inner cavity with a smaller size than the lower part of the inner hole of the end cover, the inner cavity is matched with the upper part of the joint to be sandblasted, and the inner diameter of the inner cavity is larger than the maximum outer diameter of the joint to be sandblasted; the operation hole is communicated with the inner cavity, the aperture of the operation hole is smaller than that of the inner cavity, a radial boss structure is formed between the operation hole and the inner cavity, and the top end face of the joint to be sandblasted abuts against the lower surface of the radial boss structure.

Preferably, the plunger comprises a plunger head, a plunger large-diameter rod, a plunger small-diameter rod and a conical plunger tail from top to bottom in sequence;

the outer diameter of the small-diameter plunger rod is matched with the aperture of the plunger insertion hole in a tight clearance fit manner, and the arc-shaped positioning groove is processed on the small-diameter plunger rod;

the lower end face of the conical plunger tail is a plane.

Preferably, the positioning bead is a spring positioning bead.

Compared with the prior art, the utility model has the following advantages:

the manual rapid assembly and disassembly sand blasting tool for preventing the joint surface from being scratched can realize rapid sand blasting of the joint, cannot cause the phenomenon that sand scratches the joint in the sand blasting process, is small in structure and convenient to sand.

Based on the reasons, the utility model can be widely popularized in the fields of sand blasting tools and the like.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a manual quick assembly and disassembly sand blasting tool for preventing scratches on the surface of a joint.

Figure 2 is a semi-sectional view of the base of the present utility model.

Fig. 3 is a top view of the base of the present utility model.

Fig. 4 is a schematic view of the plunger structure of the present utility model.

Fig. 5 is a schematic diagram of the end cap structure.

Fig. 6 is a schematic view of the structure of the joint to be sandblasted.

In the figure:

1. a base; 11. an axial boss; 12. a threaded hole; 13. a joint supporting and positioning groove; 14. a plunger insertion hole; 15. positioning an ejection hole; 16. an annular sand collecting groove; 17. a plane; 18. positioning a platform; 19. an end cap support surface;

2. a plunger; 21. a plunger head; 22. a plunger small diameter rod; 23 arc-shaped positioning grooves; 24. a plunger large diameter rod; 25. a tapered plunger tail;

3. an end cap; 31. an operation hole; 32. an inner cavity; 33. an inner hole of the end cover; 34. radial boss structure;

4. positioning beads;

5. the joint is subjected to sand blasting; 51. the region to be sandblasted; 52. a hole to be sandblasted; 53. an upper outer wall; 54. a lower outer wall; 55. and sealing the end face.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

As shown in fig. 1 to 6, the utility model discloses a manual quick assembly and disassembly sand blasting tool for preventing a joint surface from being scratched, which comprises a base 1, a plunger 2, an end cover 3 and a positioning bead 4, and is used for positioning and fixing a joint to be blasted and facilitating sand blasting of a joint 5 to be blasted.

As shown in fig. 2 to 3, the base 1 is a rotary structure, an axial boss 11 protruding upwards is provided at the center of the upper surface of the base 1, an annular end cover supporting surface 19 is formed around the base 1, a plunger insertion hole 14 is vertically provided at the center of the axial boss 11, a threaded hole 12 is provided at the side wall of the axial boss 11, and four planes 17 (as shown in fig. 3) are processed on the side wall of the axial boss 11. The axial boss 11 is provided with a joint supporting and positioning groove 13, the groove bottom of the joint supporting and positioning groove 13 is provided with two concentric annular sand collecting grooves 16, the two annular sand collecting grooves are respectively positioned on the inner side and the outer side of the outer wall of the lower part of the joint to be sandblasted, and a positioning platform 18 is formed between the two annular sand collecting grooves. The center of the lower surface of the base 1 is provided with a positioning ejection hole 15 communicated with the plunger insertion hole 14, and the aperture of the positioning ejection hole 15 is larger than that of the plunger insertion hole 14.

As shown in fig. 4, the plunger 2 comprises the plunger head 21, a plunger large-diameter rod 24, a plunger small-diameter rod 22 and a conical plunger tail 25 from top to bottom in sequence; the small diameter rod 22 of the plunger is provided with an arc-shaped positioning groove 23 matched with the positioning bead 4. The lower end surface of the conical plunger tail 25 is a plane. The plunger 2 is a rotary body structure with a large upper part and a small lower part, and the conical structure design with the large upper part and the small lower part is used for reducing the dead weight of the plunger 2 and facilitating positioning and installation.

As shown in fig. 5, the end cover 3 is a rotary structure, the inner center of the end cover is provided with an end cover inner hole 33, the upper aperture of the end cover inner hole 33 is reduced to form an inner cavity 32, the top of the end cover is provided with an operation hole 31 communicated with the inner cavity 32, the aperture of the operation hole 31 is smaller than that of the inner cavity 32, and a radial boss structure 34 is formed between the operation hole 31 and the inner cavity 32.

As shown in fig. 6, the joint 5 to be sandblasted is provided with a hole 52 to be sandblasted, the top of the hole 52 to be sandblasted is a region 51 to be sandblasted, the upper part of the joint 5 to be sandblasted is provided with an upper outer wall 53 with the outer diameter gradually increasing from top to bottom, the lower part is provided with a lower outer wall 54 with the same diameter, and the bottom is provided with a sealing end face 55.

The positioning beads 4 are spring positioning beads and are standard components, and are not described too much.

As shown in fig. 1, the end cover 3 is seated on the base 1, the bottom end surface of the end cover 3 is seated on the end cover supporting surface 19, the lower portion of the end cover inner hole 33 of the end cover 3 is in clearance fit with the axial boss 11, and the arrangement of the plane 17 can reduce the fit area of the axial boss 11 and the end cover inner hole 33, so that the risk of sand inclusion can be reduced on the premise of ensuring the fit positioning. The plunger small-diameter rod 22 and the conical plunger tail 25 of the plunger 2 penetrate into the plunger insertion hole 14, and the plunger insertion hole 14 is tightly in clearance fit with the plunger small-diameter rod 22, so that coaxiality and stability are ensured. The positioning beads 4 are arranged in the threaded holes 12, and the positioning beads 4 are matched with the arc-shaped positioning grooves 23 to realize clamping. The large diameter of the plunger large diameter rod 24 is arranged to form a positioning step. The joint 5 to be sandblasted is sleeved outside the plunger 2 through the hole 52 to be sandblasted, the plunger head 21 of the plunger 2 is positioned below the region 51 to be sandblasted of the joint 5 to be sandblasted, the hole 52 to be sandblasted is in clearance fit with the plunger head 21, the fit clearance is required to be reasonably designed, the minimum fit clearance is required to be larger than the diameter of sand grains, and meanwhile, the maximum fit clearance is required to prevent the region 51 to be sandblasted from exceeding the required size. The lower outer wall 54 of the head 5 to be blasted is positioned in the joint support positioning groove 13, and the sealing end surface 55 is positioned on the positioning platform 18 and between the two annular sand collecting grooves 16. The groove wall of the joint supporting and positioning groove 13 is in clearance fit with the lower outer wall 54 of the joint 5 to be sandblasted, and the fit clearance is larger than the diameter of sand grains. A protective pad may be added to the positioning platform 18 to prevent scratching of the sealing end face 55. An upper outer wall 53 of the joint 5 to be blasted is located in the inner cavity 32 and is in clearance fit with the inner cavity 32, the fit clearance being larger than the grit diameter. The top end surface of the blasting joint 5 abuts against the lower surface of the radial boss structure 34. The radial boss structure 34 forms a shielding function, protecting the non-sandblasted area surface of the joint 5 to be sandblasted. In the sand blasting process, the whole tool can be matched with positioning protrusions of other fixing structures by utilizing the positioning ejection holes 15, and after sand blasting is finished, the plunger 2 can be ejected out by positioning ejector rods into the positioning ejection holes 15.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (9)

1. The manual quick assembly and disassembly sand blasting tool for preventing the surface of the joint from being scratched is characterized by comprising a base, a plunger, an end cover and a positioning bead;

the end cover is arranged on the base, an end cover inner hole is formed in the center of the inside of the end cover, a joint to be sandblasted is placed in the end cover inner hole, and the lower part of the joint to be sandblasted is supported by the base;

the plunger is vertically arranged and is positioned in the inner hole of the end cover, the bottom end of the plunger is inserted into the center of the base and is connected with the base through the positioning bead positioned in the base, the top end of the plunger is provided with a plunger head, and the plunger head penetrates into the joint to be sandblasted;

the center of the top of the joint to be sandblasted is provided with a hole to be sandblasted, the plunger head is positioned below a sandblasted area of the hole to be sandblasted, the plunger head is in clearance fit with the hole to be sandblasted, and the minimum fit clearance is larger than the diameter of sand grains;

the center of the end cover is provided with an operation hole communicated with the inner hole of the end cover, and the top of the joint to be sandblasted abuts against the lower surface of the cover end of the end cover.

2. The manual quick assembly disassembly sand blasting tool for preventing scratches on the surface of a joint according to claim 1, wherein an axial boss protruding upwards is arranged in the center of the upper surface of the base, an annular end cover supporting surface is formed around the base, and the end cover supporting surface is used for supporting the lower end surface of the end cover;

the axial boss is in clearance fit with the lower part of the end cover inner hole of the end cover;

the center of the axial boss is provided with a plunger insertion hole for inserting the plunger, the side wall of the axial boss is provided with a threaded hole, and the positioning bead is arranged in the threaded hole; the bottom of the plunger is provided with an arc-shaped positioning groove matched with the positioning bead.

3. The tool for manually and rapidly assembling and disassembling the sand blasting tool for preventing scratches on the surface of a joint according to claim 2, wherein a positioning ejection hole communicated with the plunger insertion hole is formed in the center of the lower surface of the base, and the aperture of the positioning ejection hole is larger than that of the plunger insertion hole.

4. The tool for manually and quickly assembling and disassembling the sand blasting tool for preventing the surface of the joint from being scratched according to claim 2, wherein a plurality of planes are machined on the side wall of the axial boss.

5. The manual quick assembly disassembly sand blasting tool for preventing scratches on the surface of a joint according to claim 2, wherein a joint supporting and positioning groove is formed in the axial boss, the bottom of the joint to be blasted is arranged in the joint supporting and positioning groove, the groove wall of the joint supporting and positioning groove is in clearance fit with the outer wall of the lower part of the joint to be blasted, and the fit clearance is larger than the diameter of sand grains.

6. The tool for manually and rapidly assembling and disassembling the sand blasting tool for preventing the surface scratch of the joint according to claim 5, wherein the groove bottom of the joint supporting and positioning groove is provided with two concentric annular sand collecting grooves, and the two annular sand collecting grooves are respectively positioned on the inner side and the outer side of the outer wall of the lower part of the joint to be blasted.

7. The tool for manually and quickly assembling and disassembling the sand blasting on the surface of the joint, according to claim 1, wherein the upper part of the inner hole of the end cover is an inner cavity with a smaller size than the lower part of the inner hole of the end cover, the inner cavity is matched with the upper part of the joint to be blasted, and the inner diameter of the inner cavity is larger than the maximum outer diameter of the joint to be blasted; the operation hole is communicated with the inner cavity, the aperture of the operation hole is smaller than that of the inner cavity, a radial boss structure is formed between the operation hole and the inner cavity, and the top end face of the joint to be sandblasted abuts against the lower surface of the radial boss structure.

8. The manual quick assembly disassembly sand blasting tool for preventing scratches on the surface of a joint according to claim 2, wherein the plunger comprises a plunger head, a plunger large-diameter rod, a plunger small-diameter rod and a conical plunger tail from top to bottom in sequence;

the outer diameter of the small-diameter plunger rod is matched with the aperture of the plunger insertion hole in a tight clearance fit manner, and the arc-shaped positioning groove is processed on the small-diameter plunger rod;

the lower end face of the conical plunger tail is a plane.

9. The tool for manually and quickly assembling and disassembling the sand blasting tool for preventing scratches on the surface of a joint according to claim 1, wherein the positioning beads are spring positioning beads.