Clamping device for mounting ring piece

Abstract

The utility model discloses a clamping device for installing a ring piece, which relates to the technical field of sealing element installation and comprises a first rod body and a second rod body, the first rod body and the second rod body are connected and can rotate relatively, one end of the first rod body is provided with a first clamping part, and the other end of the first rod body is provided with a second clamping part. A second clamping part is arranged at one end of the second rod body; the elastic piece is connected to the other end of the first rod body and the other end of the second rod body, so that the first clamping part of the first rod body and the second clamping part of the second rod body tend to be opened outwards; the first clamping part can be expanded and contracted relative to the second clamping part, so that the first clamping part and the second clamping part can clamp the inner side wall of the ring piece or can be separated from the inner side wall of the ring piece. The problem that the ring piece is inconvenient to install in the ring groove of the ring base can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sealing installation technical field, especially relate to a clamping device for installing ring piece. BACKGROUND

[0002] Mechanical seal refers to the structure that prevents fluid leakage by at least one pair of end faces perpendicular to the rotation axis under the action of fluid pressure and elastic force (or magnetic force) of compensation mechanism and the cooperation of auxiliary seal. The mechanical seal can be a shaft seal device for a rotating fluid machine, which can be, for example, a centrifugal pump, a centrifuge, a reaction kettle, a compressor and the like. As an important component of the mechanical seal, the dynamic and static ring can be integral or can be made into an inlaid one. The inlaid dynamic and static ring is generally inlaid by a ring seat and a ring piece. During the inlaying process, the ring seat needs to be heated to a very high temperature, and then the worker puts the ring piece into the ring groove of the ring seat. As the temperature decreases, the ring seat shrinks and clamps the ring piece.

[0003] At that time, if the worker uses hands to put the ring piece into the ring groove, the hands are easy to be scalded. Even if gloves are worn, the gloves are heavy and the ring piece is easy to break, so the worker needs to be very careful when taking the ring piece, and the operation is not convenient. Moreover, if the ring piece is placed off-center, it is also troublesome to adjust the ring piece. As time goes on, the temperature of the ring seat decreases and the size shrinks, so it is difficult to put the ring piece into the ring groove. The ring seat needs to be heated again, which is time-consuming and laborious and greatly reduces the production efficiency. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the utility model embodiment is to provide a clamping device for installing a ring piece, which can solve the problem that the ring piece is not convenient to install into the ring groove of the ring seat.

[0005] The specific technical scheme of the utility model embodiment is as follows:

[0006] A clamping device for installing a ring piece, the clamping device for installing a ring piece comprises:

[0007] A first rod body and a second rod body, the first rod body is connected with the second rod body and can rotate relative to each other, one end of the first rod body has a first clamping part, and one end of the second rod body has a second clamping part;

[0008] An elastic member, the elastic member is connected to the other end of the first rod body and the other end of the second rod body, so that the first clamping part of the first rod body and the second clamping part of the second rod body have a tendency to open outward; the first clamping part can open and shrink relative to the second clamping part, so that the first clamping part and the second clamping part can clamp or separate from the inner side wall of the ring piece.

[0009] Preferably, the first rod body and the second rod body are connected by a rotating shaft to realize relative rotation.

[0010] Preferably, the elastic member comprises at least one of a spring and a spring piece.

[0011] Preferably, when the elastic member comprises the spring piece, one end of the first rod body has a first limiting notch, one end of the second rod body has a second limiting notch, the spring piece is arc-shaped, one end of the spring piece is clamped in the first limiting notch, and the other end of the spring piece is clamped in the second limiting notch.

[0012] Preferably, the outer side wall of the first clamping part is arc-shaped in the circumferential direction; and the outer side wall of the second clamping part is arc-shaped in the circumferential direction.

[0013] Preferably, the outer side wall of the first clamping part has a first step extending in the circumferential direction; and the outer side wall of the second clamping part has a second step extending in the circumferential direction.

[0014] Preferably, the first step is located at one end of the first clamping part away from the other end of the first rod body; the second step is located at one end of the second clamping part away from the other end of the second rod body; and the first step of the first clamping part and the second step of the second clamping part can clamp the inner side wall and the upper end face of the ring piece.

[0015] Preferably, the length D of the first step in the horizontal direction is less than or equal to the width of the ring piece.

[0016] Preferably, the clamping device for mounting the ring piece further comprises:

[0017] An adjusting mechanism for adjusting the degree of opening and closing of the first clamping part relative to the second clamping part and capable of being locked, the adjusting mechanism comprising: a threaded rod connected to the first rod body, the second rod body having an opening extending along the axis direction of the second rod body, the threaded rod being connected between the rotating position of the first rod body and the second rod body and one end of the first rod body, and the threaded rod penetrating through the opening; and a limiting member screwed on the threaded rod, the second rod body being located between the limiting member and the first rod body.

[0018] Preferably, the opening extends along the axis direction of the second rod body, and the threaded rod is hinged or fixedly connected to the first rod body.

[0019] The technical scheme of the utility model has the following remarkable beneficial effects:

[0020] The clamping device for installing the ring piece in this application can extend into the ring piece when the first clamping part retracts relative to the second clamping part, and then open, so that the first clamping part and the second clamping part can hold the inner sidewall of the ring piece. After the ring seat is heated to a high temperature and the ring piece is clamped, the operator uses the clamping device to place the ring piece into the annular groove of the ring seat, and then retracts the first clamping part relative to the second clamping part, so that the ring piece disengages from the first clamping part and the second clamping part and separates from the inner sidewall of the ring piece. In this way, the ring piece can fall completely into the annular groove. Finally, the clamping device for installing the ring piece is extended from the ring seat, thus completing the installation of the ring piece. The clamping device for installing the ring piece can easily and conveniently install the ring piece into the annular groove of the ring seat, and it is not easy for the ring piece to tilt, effectively improving the success rate and installation efficiency of the ring piece. Attached Figure Description

[0021] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0022] Figure 1 This is a front view of the clamping device for mounting the ring piece in an embodiment of the present invention, showing the ring piece being clamped.

[0023] Figure 2 This is a three-dimensional schematic diagram of the clamping device for mounting the ring piece in an embodiment of the present invention.

[0024] Figure 3 This is a cross-sectional view of the first clamping part or the second clamping part in an embodiment of this utility model.

[0025] The reference numerals in the above figures are as follows:

[0026] 1. First rod body; 11. First limiting notch; 12. First clamping part; 121. First step; 2. Second rod body; 21. Second limiting notch; 22. Second clamping part; 23. Opening; 3. Elastic element; 4. Rotating shaft; 5. Adjustment mechanism; 51. Threaded rod; 52. Limiting element; 100. Ring piece. Detailed Implementation

[0027] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are for illustrative purposes only and should not be construed as limiting the utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model.

[0028] To address the problem of the inconvenience of installing the ring piece into the annular groove of the ring seat, this application proposes a clamping device for installing the ring piece. Figure 1 This is a front view of the clamping device for mounting the ring piece in an embodiment of the present invention, showing the ring piece being clamped. Figure 2 This is a three-dimensional schematic diagram of the clamping device for mounting the ring piece in an embodiment of the present invention, as shown below. Figure 1 and Figure 2 As shown, the clamping device for installing the ring piece may include: a first rod 1 and a second rod 2, the first rod 1 and the second rod 2 being connected and rotatable relative to each other, one end of the first rod 1 having a first clamping part 12, and one end of the second rod 2 having a second clamping part 22; an elastic member 3, the elastic member 3 being connected to the other end of the first rod 1 and the other end of the first rod 1, so that the first clamping part 12 of the first rod 1 and the second clamping part 22 of the second rod 2 have an outward opening tendency; the first clamping part 12 can open and retract relative to the second clamping part 22, so that the first clamping part 12 and the second clamping part 22 can clamp the inner wall of the ring piece 100 or separate from the inner wall of the ring piece 100.

[0029] The clamping device for installing the ring piece in this application can extend into the ring piece 100 when the first clamping part 12 retracts relative to the second clamping part 22, and then open, so that the first clamping part 12 and the second clamping part 22 can lock the inner wall of the ring piece 100. After the ring seat is heated to a very high temperature and the ring piece 100 is clamped, the operator uses the clamping device to place the ring piece 100 into the ring groove of the ring seat, and then retracts the first clamping part 12 relative to the second clamping part 22, so that the ring piece 100 is separated from the first clamping part 12 and the second clamping part 22 from the inner wall of the ring piece 100. In this way, the ring piece 100 can fall completely into the ring groove. Finally, the clamping device for installing the ring piece is extended from the ring seat, thus completing the installation of the ring piece 100. The clamping device for installing the ring piece allows the ring piece 100 to be easily and conveniently installed into the ring groove of the ring seat, and the ring piece 100 is less likely to tilt, which effectively improves the success rate and installation efficiency of the ring piece 100.

[0030] like Figure 1 and Figure 2As shown, the clamping device for mounting the ring plate includes: a first rod 1 and a second rod 2, and an elastic element 3. The first rod 1 and the second rod 2 are connected and can rotate relative to each other. Alternatively, the first rod 1 and the second rod 2 can be connected by a rotating shaft 4 to achieve relative rotation. Specifically, the first rod 1 and the second rod 2 are each provided with a through hole, and the rotating shaft 4 is inserted into the through hole, so that the first rod 1 and the second rod 2 can rotate around the rotating shaft 4. For example, the rotating shaft 4 can be a pin. The rotatable connection between the first rod 1 and the second rod 2 can be located near the other end of the first rod 1 and the second rod 2, such as near the upper end.

[0031] The first rod 1 has a first clamping part 12 at one end, and the second rod 2 has a second clamping part 22 at one end. One end of the first rod 1 and one end of the second rod 2 can be the lower ends of the first rod 1 and the second rod 2. The first clamping part 12 and the second clamping part 22 can be used to clamp the ring piece 100.

[0032] The elastic element 3 is connected to the other end of the first rod 1 and the other end of the second rod 2. Specifically, one end of the elastic element 3 is connected to or abuts against the other end of the first rod 1, and the other end of the elastic element 3 is connected to or abuts against the other end of the second rod 2, so that the first clamping part 12 and the second clamping part 22 of the first rod 1 tend to open outward. The connection or abutment point of the elastic element 3 with the other end of the first rod 1 and the other end of the second rod 2 is higher than the rotatable connection point of the first rod 1 and the second rod 2. The elastic element 3 acts on the other end of the first rod 1 and the other end of the second rod 2, thereby causing the other ends of the first rod 1 and the other end of the second rod 2 to tend to move closer together, and thus causing the first clamping part 12 and the second clamping part 22 of the first rod 1 to tend to open outward.

[0033] Through the deformation of the elastic element 3, the first clamping part 12 can open and close relative to the second clamping part 22, so that the first clamping part 12 and the second clamping part 22 can clamp onto the inner wall of the ring piece 100 or separate from the inner wall of the ring piece 100. When the first clamping part 12 is open relative to the second clamping part 22, the first clamping part 12 and the second clamping part 22 can clamp onto the inner wall of the ring piece 100, thereby clamping the ring piece 100. When the first clamping part 12 is closed relative to the second clamping part 22, the first clamping part 12 and the second clamping part 22 can separate from the inner wall of the ring piece 100, thereby detaching from the ring piece 100.

[0034] As is feasible, the elastic element 3 may include at least one of the following: a spring or a sheet.

[0035] When the elastic element 3 includes a spring, the spring can exert a pulling force on the other end of the first rod 1 and the other end of the second rod 2, thereby causing the other ends of the first rod 1 and the other ends of the second rod 2 to have a tendency to move closer together.

[0036] When the elastic element 3 includes a spring sheet, one end of the first rod 1 has a first limiting notch 11, and one end of the second rod 2 has a second limiting notch 21. The spring sheet can be generally arc-shaped, with one end of the spring sheet engaged in the first limiting notch 11 and the other end engaged in the second limiting notch 21. The pressure generated by the spring sheet causes the other ends of the first rod 1 and the other ends of the second rod 2 to tend to move closer together. In the above embodiment, the spring sheet can generally be made of a metal material, which has a certain toughness and deformation capacity.

[0037] To ensure better contact between the first clamping portion 12 and the second clamping portion 22 and the ring piece 100 when clamping it, preventing excessive local pressure on the ring piece 100 and thus preventing breakage, the outer wall of both the first clamping portion 12 and the second clamping portion 22 can be arc-shaped in the circumferential direction. The outer walls of both the first and second clamping portions 12 can at least partially contact the inner wall of the ring piece 100 to maximize the contact area and minimize the stress on the ring piece 100. Furthermore, the curvature of the outer wall of the arc-shaped first clamping portion 12 is greater than or equal to the curvature of the inner wall of the ring piece 100.

[0038] To ensure that the first clamping part 12 and the second clamping part 22 can engage with the ring piece 100 when clamping it, and to prevent the first clamping part 12 and the second clamping part 22 from deviating from the ring piece 100 in the vertical direction and failing to clamp the ring piece 100, Figure 3 This is a cross-sectional view of the first or second clamping part in an embodiment of the present invention, such as... Figure 3 As shown, the outer wall of the first clamping part 12 has a first step 121 extending in the circumferential direction; the outer wall of the second clamping part 22 has a second step extending in the circumferential direction.

[0039] Furthermore, to ensure that the clamping device for mounting the ring piece can be easily separated from the clamped ring piece 100, for example, the first clamping part 12 can be slightly retracted relative to the second clamping part 22 before being lifted to separate the clamping device from the clamped ring piece 100. As a feasible method, such as... Figure 1 and Figure 2As shown, the first step 121 is located at the end of the first clamping part 12 that is away from the other end of the first rod 1; the second step is located at the end of the second clamping part 22 that is away from the other end of the second rod 2; the first step 121 of the first clamping part 12 and the second step of the second clamping part 22 can clamp the inner sidewall and the upper end face of the ring piece 100.

[0040] In order to facilitate the insertion of the first clamping part 12 and the second clamping part 22 into the ring seat after they are clamped on the inner side wall of the ring piece 100, and to avoid interference with the ring seat, the length D of the first step 121 in the horizontal direction is less than or equal to the width of the ring piece 100.

[0041] To facilitate operators in controlling the degree of opening and closing of the first clamping part 12 relative to the second clamping part 22, the clamping device for installing the ring piece may include: an adjustment mechanism 5, which is used to adjust the degree of opening and closing of the first clamping part 12 relative to the second clamping part 22 and can be locked.

[0042] In one specific implementation, such as Figure 1 and Figure 2 As shown, the adjusting mechanism 5 may include: a threaded rod 51 connected to the first rod 1; a second rod 2 having an opening 23; the threaded rod 51 connecting the rotation point of the first rod 1 and the second rod 2 to one end of the first rod 1; the threaded rod 51 passing through the opening 23; and a limiting member 52 screwed onto the threaded rod 51, with the second rod 2 located between the limiting member 52 and the first rod 1. The threaded rod 51 may be hinged or fixedly connected to the first rod 1. The opening 23 extends a distance along the axial direction of the second rod 2, thereby ensuring the smooth opening and closing of the first clamping part 12 relative to the second clamping part 22, and preventing interference between the threaded rod 51 and the second rod 2 in the opening 23, which would prevent the first clamping part 12 from opening and closing smoothly relative to the second clamping part 22.

[0043] The operator can control the position of the limiting member 52 on the threaded rod 51 by turning the limiting member 52. Since the elastic member 3 causes the first clamping part 12 and the second clamping part 22 of the first rod 1 to have an outward opening tendency, the limiting member 52 can control the degree of opening and closing of the first clamping part 12 relative to the second clamping part 22 and can lock it.

[0044] When the operator uses the clamping device for installing the ring piece, first adjust the limiting member 52 on the threaded rod 51, moving the limiting member 52 towards the second rod 2, thereby overcoming the force of the elastic member 3, causing the first clamping part 12 to contract relative to the second clamping part 22. The distance between the first clamping part 12 and the second clamping part 22 is slightly larger than the inner diameter of the ring piece 100. Then, the operator grips the first rod 1 and the second rod 2 tightly, causing the first clamping part 12 to contract slightly relative to the second clamping part 22. Then, the first clamping part 12 and the second clamping part 22 are inserted into the ring piece 100. Then, the operator releases the first rod 1 and the second rod 2. Under the action of the elastic member 3, the first clamping part 12 expands slightly relative to the second clamping part 22. The first step 121 of the first clamping part 12 and the second step of the second clamping part 22 lock onto the inner wall of the ring piece 100. The operator then places the ring piece 100 into the annular groove of the ring seat, and then firmly grips the first rod 1 and the second rod 2, causing the first clamping part 12 to contract slightly relative to the second clamping part 22. The ring piece 100 then disengages from the first clamping part 12 and the second clamping part 22, falling into the annular groove. Because the first step 121 of the first clamping part 12 and the second step of the second clamping part 22 press against the upper surface of the ring piece 100, when the ring piece 100 is placed into the annular groove of the ring seat, its lower surface can completely conform to the bottom surface of the groove, preventing misalignment and improving the success rate of installation. Finally, the operator extends the clamping device used to install the ring piece from inside the ring seat.

[0045] Furthermore, such as Figure 2 As shown, the threaded rod 51 can be hinged to the first rod body 1. When it is necessary to control the first clamping part 12 to retract relative to the second clamping part 22, the operator can also rotate the threaded rod 51 clockwise slightly to make the limiting member 52 abut against the second rod body 2 to retract the second clamping part 22; when it is necessary to control the first clamping part 12 to expand relative to the second clamping part 22, the operator can also rotate the threaded rod 51 counterclockwise slightly to make the limiting member 52 abut against the second rod body 2 to expand the second clamping part 22.

[0046] The clamping device for installing the ring piece in this application can easily and conveniently install the ring piece 100 into the ring groove of the ring seat, and it is less likely that the ring piece 100 will tilt, effectively improving the success rate and installation efficiency of the ring piece 100. Secondly, the first step 121 on the outer side wall of the first clamping part 12 and the second step on the outer side wall of the second clamping part 22 can effectively prevent the first clamping part 12 and the second clamping part 22 from deviating from the ring piece 100 in the vertical direction and failing to clamp the ring piece 100. In addition, the adjusting mechanism 5 can effectively control the degree of opening and closing of the first clamping part 12 relative to the second clamping part 22, reducing the force consumed by the operator when further opening and closing the first clamping part 12 relative to the second clamping part 22.

[0047] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0048] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A clamping device for mounting ring plates, characterized in that, The clamping device for mounting the ring piece includes: A first rod and a second rod, the first rod and the second rod are connected and can rotate relative to each other, one end of the first rod has a first clamping part, and one end of the second rod has a second clamping part; An elastic element is connected to the other end of the first rod and the other end of the second rod, such that the first clamping portion of the first rod and the second clamping portion of the second rod tend to open outward; the first clamping portion can open and close relative to the second clamping portion, so that the first clamping portion and the second clamping portion can lock onto the inner wall of the ring piece or separate from the inner wall of the ring piece.

2. The clamping device for mounting the ring piece according to claim 1, characterized in that, The first rod and the second rod are connected by a pivot to achieve relative rotation.

3. The clamping device for mounting the ring piece according to claim 1, characterized in that, The elastic element includes at least one of the following: a spring or a sheet spring.

4. The clamping device for mounting the ring piece according to claim 3, characterized in that, When the elastic element includes the spring piece, one end of the first rod has a first limiting notch, one end of the second rod has a second limiting notch, the spring piece is arc-shaped, one end of the spring piece is engaged in the first limiting notch, and the other end of the spring piece is engaged in the second limiting notch.

5. The clamping device for mounting the ring piece according to claim 1, characterized in that, The outer wall of the first clamping part is arc-shaped in the circumferential direction; the outer wall of the second clamping part is arc-shaped in the circumferential direction.

6. The clamping device for mounting the ring piece according to claim 1, characterized in that, The outer wall of the first clamping part has a first step extending in the circumferential direction; the outer wall of the second clamping part has a second step extending in the circumferential direction.

7. The clamping device for mounting the ring piece according to claim 6, characterized in that, The first step is located at the end of the first clamping part that is away from the other end of the first rod; the second step is located at the end of the second clamping part that is away from the other end of the second rod; the first step of the first clamping part and the second step of the second clamping part can lock the inner sidewall and the upper end face of the ring piece.

8. The clamping device for mounting the ring piece according to claim 6, characterized in that, The length D of the first step in the horizontal direction is less than or equal to the width of the ring piece.

9. The clamping device for mounting the ring piece according to claim 1, characterized in that, The clamping device for mounting the ring piece further includes: An adjustment mechanism is provided for adjusting the degree of opening and closing of the first clamping part relative to the second clamping part and for locking the clamping part. The adjustment mechanism includes: a threaded rod connected to the first rod body; the second rod body has an opening; the threaded rod is connected between the rotation point of the first rod body and the second rod body and one end of the first rod body; the threaded rod passes through the opening; and a limiting member screwed onto the threaded rod, with the second rod body located between the limiting member and the first rod body.

10. The clamping device for mounting the ring piece according to claim 9, characterized in that, The opening extends along the axial direction of the second rod, and the threaded rod is hinged or fixedly connected to the first rod.

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