A valve core pulling device

Abstract

The utility model discloses a valve core draws device, include: main staff, be equipped with operating handle on the main staff, and operating handle will be the main staff divide near valve stem and far valve stem, and near valve stem is equipped with first end portion with operating handle one end away, plug connector, plug connector sets up in first end portion, to with the plug connector of valve core end portion intercalation, sleeve, sleeve activity sleeve sets up on near valve stem, and sleeve is equipped with first connecting portion to with the detachable connection of second connecting portion on valve core. The valve core draws device of the utility model, through setting up plug connector at first end portion, with the plug connector of valve core end portion intercalation, to facilitate operator to exert force and twist out valve core part, again through first connecting portion and second connecting portion detachable connection, to facilitate operator to pull out valve core, after pulling out, split valve core and sleeve, realized the intact valve core drawing process. The above-mentioned drawing process all are located at the first end portion of valve core drawing device, need not to turn direction, realized more convenient, efficient valve core drawing.

Description

Technical Field

[0001] This utility model relates to the field of mining tools technology, and more specifically, to a valve core removal device. Background Technology

[0002] The directional valve core of a mining hydraulic support needs to be disassembled, maintained, or replaced periodically to avoid problems such as rust and damage. Due to the presence of a seal, removing the valve core requires overcoming significant resistance from negative pressure adsorption; therefore, a valve core removal device is usually required to assist in its removal.

[0003] Some existing valve core removal devices are typically rod-shaped, with an external hexagonal end at one end and a threaded sleeve at the other. However, in use, these devices require inserting the external hexagonal end into the internal hexagonal opening of the valve core to screw the valve core completely off the sleeve. Then, the external hexagonal end is pulled out, the device is reversed, and the sleeve at the other end is screwed onto the external thread of the valve core for easy removal. This cumbersome process results in low valve core disassembly efficiency and inconvenience for operators. Utility Model Content

[0004] In view of this, the present invention aims to provide a valve core removal device to solve at least one of the technical problems of the prior art, such as cumbersome use of valve core removal devices, low valve core disassembly efficiency, and inconvenience of use.

[0005] This utility model provides a valve core removal device, comprising: a main rod, on which an operating handle is provided, the operating handle dividing the main rod into a near valve stem and a far valve stem, the near valve stem having a first end portion at the end away from the operating handle; a plug connector, the plug connector being disposed at the first end portion for insertion into a plug hole at the end of the valve core; and a sleeve, the sleeve being movably sleeved on the near valve stem, the sleeve having a first connecting portion for detachable connection with a second connecting portion on the valve core.

[0006] Furthermore, both the connector and the socket are non-rotational in shape.

[0007] Furthermore, the connector is an external hexagonal head, and the valve core end is provided with an internal hexagonal hole, with the external hexagonal head and the internal hexagonal hole being inserted and mated.

[0008] Furthermore, it also includes: a first support piece, one side of which is connected to the first end to limit the range of motion of the sleeve, and the other side of which is connected to the connector.

[0009] Furthermore, it also includes: a swing hammer, which is movably sleeved on the remote valve stem through a first through hole; and a second support plate, wherein the remote valve stem has a second end portion at the end away from the operating handle, and one side of the second support plate is connected to the second end portion to limit the range of motion of the swing hammer.

[0010] Furthermore, the first connecting part has an internal thread structure, and the second connecting part has an external thread structure.

[0011] Furthermore, the sleeve includes a first sleeve portion and a second sleeve portion, the first sleeve portion having the first connecting portion, and the second sleeve portion being sleeved and slidably connected to the valve stem.

[0012] Furthermore, the minimum inner diameter of the first sleeve portion is greater than the maximum outer diameter of the first support piece.

[0013] Furthermore, the maximum inner diameter of the second sleeve portion is smaller than the minimum outer diameter of the first support piece.

[0014] Furthermore, the operating handle includes at least two handles, and a plurality of the handles are arranged at circumferential intervals along the main rod.

[0015] This utility model discloses a valve core removal device. A connector is provided at the end of the main rod near the valve stem (i.e., the first end), which connects to the insertion hole at the end of the valve core. This allows the operator to unscrew the valve core using the operating handle. The first connecting part on the sleeve is detachably connected to the second connecting part on the valve core, allowing the operator to pull out the valve core. After removal, the valve core and sleeve can be separated, achieving a complete and damage-free valve core removal process. The entire removal process occurs at the first end of the valve core removal device, eliminating the need to rotate the device and resulting in a more convenient and efficient valve core removal.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method. The accompanying drawings, which are provided to further understand the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with their description, serve to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 This is one of the structural schematic diagrams of the valve core removal device in this utility model;

[0019] Figure 2 This is the second structural schematic diagram of the valve core removal device in this utility model.

[0020] The above figures include the following reference numerals:

[0021] 1. Main rod; 11. Operating handle; 111. Handle rod; 12. Near valve stem; 121. First end; 13. Far valve stem; 131. Second end; 2. Connector; 3. Sleeve; 31. First sleeve portion; 32. Second sleeve portion; 33. First connecting portion; 34. Annular protrusion; 4. First support plate; 5. Swing hammer; 51. First through hole; 6. Second support plate. Detailed Implementation

[0022] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but these are not intended to limit the scope of the present invention.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to the present invention.

[0025] This utility model provides a valve core removal device, combined with Figure 1 and Figure 2 As shown, it includes: a main rod 1, on which an operating handle 11 is provided, the operating handle 11 dividing the main rod 1 into a near valve rod 12 and a far valve rod 13, the near valve rod 12 having a first end 121 at the end away from the operating handle 11; a plug connector 2, the plug connector 2 being disposed at the first end 121 for insertion into a plug hole at the end of the valve core; and a sleeve 3, the sleeve 3 being movably sleeved on the near valve rod 12, the sleeve 3 having a first connecting part 33 for detachable connection with a second connecting part on the valve core.

[0026] Specifically, the main rod 1 is typically in the shape of a rotating body, such as a long rod with a circular cross-section (i.e., cylindrical), which ensures the rotational performance of the sleeve 3 on the valve core extraction device. In other embodiments, the main rod 1 can also be selected in other shapes as needed, such as a quadrangular prism, a triangular prism, a cone, etc., which are not limited here.

[0027] Combination Figure 2 As shown, the operating handle 11 is integrally connected to the main rod 1, dividing the main rod 1 into a near valve stem 12 and a far valve stem 13. That is, the near valve stem 12 is relatively closer to the valve core to be removed, and the far valve stem 13 is relatively farther away from the valve core to be removed (the valve core to be removed is not shown in the figure; in actual applications, the valve core to be removed is located closer to the connector 2 to facilitate insertion and engagement between the valve core to be removed and the connector 2). Furthermore, the operating handle 11 can be designed as needed, such as with anti-slip patterns or a wavy surface for easier and more comfortable use by the operator.

[0028] It is important to note that, in combination Figure 2 As shown, the valve stem 12 is provided with a first end 121 at the end away from the operating handle 11. The plug 2 is provided at the first end 121. The plug 2 can be designed in different shapes as needed to be plugged into the plug hole at the end of the valve core.

[0029] Preferably, both the connector 2 and the socket are non-rotational shapes. For example, both the connector 2 and the socket are polygonal prisms, allowing for the transmission of a larger torque between them after mating.

[0030] Specifically, the connector 2 is an external hexagonal head, and the valve core end is provided with an internal hexagonal hole. The external hexagonal head and the internal hexagonal hole are inserted into each other. In this way, the insertion and engagement between the external hexagonal head connector 2 and the internal hexagonal hole is achieved through the external hexagonal head connector 2, so that a large torque can be transmitted between the connector 2 and the insertion hole after the insertion and engagement.

[0031] Combination Figure 1 and Figure 2 As shown, the sleeve 3 is fitted onto the valve stem 12 and can move relative to the valve stem 12, thereby facilitating the movement of the sleeve 3 towards or away from the valve core and facilitating the alignment and connection between the sleeve 3 and the valve core. The first connecting part 33 inside the sleeve 3 can be connected to the second connecting part on the valve core in a detachable manner, for example, by snap-fit ​​or screw connection. This ensures that sufficient force can be transmitted through the sleeve 3 when the valve core is pulled out, and that the sleeve 3 and the valve core can be separated after the valve core is pulled out.

[0032] Specifically, the sleeve 3 includes a first sleeve portion 31 and a second sleeve portion 32. The first sleeve portion 31 is provided with the first connecting portion 33, and the second sleeve portion 32 is sleeved and slidably connected to the valve stem 12.

[0033] For example, combined Figure 2 As shown, the sleeve 3 is integrally formed by connecting a first sleeve portion 31 and a second sleeve portion 32. The first sleeve portion 31 has a first connecting portion 33 for detachable connection with a second connecting portion on the valve core. Therefore, the inner diameter of the first sleeve portion 31 is usually approximately equal to the outer diameter of the second connecting portion on the valve core. Correspondingly, the inner diameter of the second sleeve portion 32 is usually approximately equal to the outer diameter near the valve stem 12, so that the second sleeve portion 32 can be fitted and slidably connected to the near valve stem 12, serving as a sliding guide.

[0034] In use, the valve core extraction device of this utility model first connects the plug 2 to the plug hole at the end of the valve core. The operator then applies force to turn the operating handle 11, which in turn drives the valve core to rotate through the plug 2, causing the threaded engagement of the valve core to be partially unscrewed (not necessarily completely unscrewed). Then, the sleeve 3 is moved to the valve core and detachably connected to the second connecting part on the valve core through the first connecting part 33, thus fixing the valve core to the sleeve 3. Next, force is applied through the valve core extraction device, and the force is transmitted to the valve core through the sleeve 3, causing the valve core to gradually move outward and be pulled out. Finally, the second connecting part is separated from the first connecting part to obtain a complete and undamaged valve core.

[0035] This utility model's valve core removal device features a connector 2 located at the end of the main rod 1 near the valve stem 12 (i.e., the first end 121), which connects to the insertion hole at the valve core end. This allows the operator to apply force using the operating handle 11 to unscrew the valve core. The sleeve 3 is detachably connected to the second connecting part on the valve core via a first connecting part 33, facilitating the operator's pulling out of the valve core. After removal, the valve core and sleeve 3 can be separated, achieving a complete and damage-free valve core removal process. The entire removal process occurs at the first end 121 of the valve core removal device, eliminating the need to rotate the device and resulting in a more convenient and efficient valve core removal process.

[0036] Furthermore, it also includes: a first support piece 4, one side of the first support piece 4 is connected to the first end 121 to limit the range of motion of the sleeve 3, and the other side of the first support piece 4 is connected to the plug 2.

[0037] Combination Figure 1 and Figure 2 As shown, the first support plate 4 can be circular, with one side connected to the first end 121. This side surface of the first support plate 4 can abut against a portion of the surface of the sleeve 3 to achieve a limiting position, thereby restricting the range of motion of the sleeve 3. The other side of the first support plate 4 is connected to the connector 2, and this side surface of the first support plate 4 can abut against the surface of the valve core end to ensure that the connector 2 is fully inserted into the valve core's insertion hole. For example... Figure 2 As shown, the inner cavity of the first sleeve portion 31 has a circular cross-section, and the first support plate 4 is circular. The inner diameter of the first sleeve portion 31 is larger than that of the first support plate 4, so that the first support plate 4 can enter the inner cavity of the first sleeve portion 31. The first support plate 4 located in the inner cavity abuts against the end of the second sleeve portion 32 (i.e., the end of the second sleeve portion 32 facing the valve core) to form a limiting position. The first sleeve portion 31 and the second sleeve portion 32 can be integrally connected by an annular protrusion 34.

[0038] It is understood that the first support plate 4 can also be other shapes, such as elliptical plates, rectangular plates, etc., and no specific limitation is made here. The first support plate 4 can be integrally connected with the plug 2 and installed on the first end 121 by plugging, bolting or other means. The specific connection method can be determined according to factors such as assembly convenience and cost, and no limitation is made here.

[0039] Furthermore, it also includes: a swing hammer 5, which is movably sleeved on the remote valve stem 13 through a first through hole 51; and a second support plate 6, wherein the remote valve stem 13 has a second end 131 at the end away from the operating handle 11, and one side of the second support plate 6 is connected to the second end 131 to limit the range of motion of the swing hammer 5.

[0040] Combination Figure 1and Figure 2 As shown, the swing hammer 5 has a first through hole 51, through which it is fitted onto the remote valve stem 13. Optionally, the minimum inner diameter of the first through hole 51 is larger than the maximum inner diameter of the remote valve stem 13, allowing the remote valve stem 13 some room to move within the first through hole 51. Simultaneously, the swing hammer 5 can also move along the length of the remote valve stem 13. A second end 131 is provided at the end of the remote valve stem 13 furthest from the operating handle 11. One side of the second support plate 6 is connected to the second end 131, and this side surface of the second support plate 6 can abut against and limit the swing hammer 5, thereby restricting its range of motion and allowing it to swing within this range (similar to reciprocating motion).

[0041] In this way, the force is transmitted to the sleeve 3 by the swinging hammer 5 impacting the second support plate 6, thereby realizing the removal of the valve core. Since the impact force of the swing hammer 5 is utilized, manpower can be saved and the efficiency of valve core removal can be improved.

[0042] Furthermore, the first connecting part 33 has an internal thread structure, and the second connecting part has an external thread structure.

[0043] In this way, the sleeve 3 can be threadedly connected to the second connecting part on the valve core through the first connecting part 33, thereby achieving the function of being detachable.

[0044] Preferably, the minimum inner diameter of the first sleeve portion 31 is greater than the maximum outer diameter of the first support piece 4.

[0045] Combination Figure 2 As shown, the inner cavity of the first sleeve portion 31 has a circular cross-section, and the first support piece 4 is circular. For example, the inner diameter of the first sleeve portion 31 is d1, and the outer diameter of the first support piece 4 is D1 (for a structure with a constant inner and outer diameter, the maximum or minimum value of its inner or outer diameter is equal, that is, the minimum inner diameter of the first sleeve portion 31 is d1, and the maximum outer diameter of the first support piece 4 is D1). Here, D1 > d1, so that the first sleeve portion 31 can allow the first support piece 4 to pass through smoothly, so that after the first support piece 4 passes through, it abuts and limits the second sleeve portion 32, thereby restricting the range of motion of the sleeve 3.

[0046] It is understandable that the first sleeve portion 31 may also adopt an inner cavity with a non-uniform diameter design (e.g., a rectangular cross-section inner cavity), and the first support plate 4 may also adopt an outer shape with a non-uniform diameter design (e.g., a rectangular plate shape). As long as the minimum inner diameter of the first sleeve portion 31 is greater than the maximum outer diameter of the first support plate 4, the first support plate 4 can pass smoothly through the first sleeve portion 31 to abut against the second sleeve portion 32.

[0047] Thus, the first sleeve portion 31 allows the first support piece 4 to pass through, thereby causing the first support piece 4 to abut against the second sleeve portion 32, which can both limit the sleeve 3 and not affect the detachable connection between the sleeve 3 and the valve core.

[0048] Preferably, the maximum inner diameter of the second sleeve portion 32 is smaller than the minimum outer diameter of the first support piece 4.

[0049] Combination Figure 2 As shown, the inner cavity of the second sleeve portion 32 has a circular cross-section, and the first support piece 4 is circular. For example, the inner diameter of the second sleeve portion 32 is d2, and the outer diameter of the first support piece 4 is D1 (for a structure with a constant inner and outer diameter, the maximum or minimum value of its inner or outer diameter is equal, that is, the maximum inner diameter of the second sleeve portion 32 is d2, and the minimum outer diameter of the first support piece 4 is equal to the maximum outer diameter, which is D1). Here, d2 < D1, so that the second sleeve portion 32 cannot allow the first support piece 4 to pass through.

[0050] It is understandable that the second sleeve portion 32 may also adopt an inner cavity with a non-uniform diameter design (e.g., a rectangular cross-section inner cavity), and the first support plate 4 may also adopt an outer shape with a non-uniform diameter design (e.g., a rectangular plate shape), as long as the maximum inner diameter of the second sleeve portion 32 is smaller than the minimum outer diameter of the first support plate 4, so that the first support plate 4 can restrict the second sleeve portion 32.

[0051] Thus, the second sleeve portion 32 cannot allow the first support piece 4 to pass through, thereby causing the first support piece 4 to abut against the second sleeve portion 32, achieving the limitation of the sleeve 3, and also playing a better force transmission role.

[0052] Furthermore, the operating handle 11 includes at least two handle rods 111, and a plurality of handle rods 111 are arranged at intervals along the circumference of the main rod 1.

[0053] Combination Figure 1 and Figure 2 As shown, both the main rod 1 and the handle 111 are cylindrical rod structures. Two handles 111 are arranged at intervals along the circumference of the main rod 1. This allows the operator to apply force to each handle 111 with both hands, resulting in better force application. Furthermore, more handles 111 can be provided to facilitate easier force application by the operator.

[0054] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0055] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A valve core removal device, characterized in that, include: The main rod is provided with an operating handle, which divides the main rod into a near valve rod and a far valve rod. The near valve rod has a first end portion at the end away from the operating handle. A connector is disposed at the first end for insertion into a connector hole at the end of the valve core; A sleeve is movably fitted onto the valve stem, and the sleeve has a first connecting part for detachable connection with a second connecting part on the valve core.

2. The valve core removal device according to claim 1, characterized in that, Both the connector and the socket are non-rotational in shape.

3. The valve core removal device according to claim 2, characterized in that, The connector is an external hexagonal head, and the valve core end is provided with an internal hexagonal hole. The external hexagonal head and the internal hexagonal hole are inserted and mated.

4. The valve core removal device according to claim 1, characterized in that, Also includes: A first support piece, one side of which is connected to the first end to limit the range of motion of the sleeve, and the other side of which is connected to the connector.

5. The valve core removal device according to claim 1, characterized in that, Also includes: A swing hammer, which is movably sleeved on the remote valve stem through a first through hole; The second support plate has a second end portion at the end of the valve stem away from the operating handle, and one side of the second support plate is connected to the second end portion to limit the range of motion of the swing hammer.

6. The valve core removal device according to claim 1, characterized in that, The first connecting part has an internal thread structure, and the second connecting part has an external thread structure.

7. The valve core removal device according to claim 4, characterized in that, The sleeve includes a first sleeve portion and a second sleeve portion. The first sleeve portion is provided with the first connecting portion, and the second sleeve portion is sleeved and slidably connected to the valve stem.

8. The valve core removal device according to claim 7, characterized in that, The minimum inner diameter of the first sleeve portion is greater than the maximum outer diameter of the first support piece.

9. The valve core removal device according to claim 7, characterized in that, The maximum inner diameter of the second sleeve is smaller than the minimum outer diameter of the first support plate.

10. The valve core removal device according to claim 1, characterized in that, The operating handle includes at least two handles, and a plurality of the handles are arranged at circumferential intervals along the main rod.

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