Piston rod with leak-proof function

Abstract

The utility model relates to a piston rod, which belongs to the technical field of piston rods, in particular to a piston rod with a leak-proof function, which comprises a base, a sliding piece, a sliding groove and a cooling piece, wherein the upper surface of the base is fixedly connected with a rod sleeve, and a rod body is arranged in the rod sleeve; the sliding piece is fixedly connected with the surface of the rod body. The outer surface of the sliding piece is slidably connected with the inner wall of the rod sleeve. The sliding grooves are formed in the inner wall of the sleeve rod, and balls are rotationally connected to the inner walls of the sliding pieces and slidably connected with the sliding grooves. The cooling part comprises a circulating pump and a circulating pool which are arranged on one side of the base, and the cooling assembly partially wraps the outer side of the rod sleeve; according to the utility model, friction and heat generated by friction can be reduced by reducing the contact surface of the rod body and the rod sleeve, and liquid leakage caused by deformation of the sealing element due to high temperature can be prevented; the piston rod solves the problem of liquid leakage caused by deformation of a sealing piece due to friction loss and friction heat generated by long-time acting of an existing piston rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of piston rod, especially a piston rod with anti-leakage function. BACKGROUND

[0002] Piston rod is a connecting component for supporting the work of the piston, and is very common in the processing field.

[0003] In the prior art, the piston rod is generally used in conjunction with a rod sleeve, and operates in an extension and retraction mode during work. However, the piston rod will rub against the inner wall of the rod sleeve during long-term reciprocating movement, gradually forming a friction gap, which will cause oil leakage over a long period of time. In addition, the heat generated by friction can easily cause the piston rod and the sealing element to expand and deform, increase the fitting gap, worsen the leakage problem, cause the sealing element to age, and reduce the service life of the piston rod. Therefore, a piston rod with anti-leakage function is proposed to solve the above problems. SUMMARY

[0004] To solve the above technical problems, the utility model provides a piston rod with anti-leakage function, which can reduce friction and heat generated by friction by reducing the contact surface between the rod body and the rod sleeve, reduce friction loss caused by high-load operation, and prevent leakage caused by deformation of the sealing element due to high temperature.

[0005] The technical solution for achieving the purpose of the utility model is as follows: a piston rod with anti-leakage function, comprising a base, a rod sleeve fixedly connected to the upper surface of the base, a rod body provided in the rod sleeve, and

[0006] a sliding sheet fixedly connected to the surface of the rod body, the outer surface of the sliding sheet being slidably connected to the inner wall of the rod sleeve;

[0007] a plurality of sliding grooves equally provided on the inner wall of the sleeve rod, a rolling ball rotatably connected to the inner wall of the sliding sheet, and the rolling ball being slidably connected to the sliding groove;

[0008] a cover, the lower surface of the cover being fixedly connected to the top end of the rod body, and the cover having an oil seal washer and a sealing washer respectively provided therein;

[0009] a cooling element, the cooling element comprising a circulating pump and a circulating pool respectively provided on one side of the base, the cooling element being partially wrapped outside the rod sleeve, one side of the circulating pool being provided with a semiconductor refrigeration sheet, and the cold end of the semiconductor refrigeration sheet being in close contact with one side of the circulating pool.

[0010] In some embodiments, the bottom end of the rod body is fixedly connected to a spring, and the other end of the spring is fixedly connected to the inner bottom wall of the rod sleeve.

[0011] In some embodiments, the upper surface of the sliding sheet is provided with an isolation gasket, the isolation gasket is matched with the sliding groove in shape, and the isolation gasket is in sliding connection with the sliding groove.

[0012] In some embodiments, two layers are arranged in the cover, the oil seal gasket and the sealing gasket are arranged in different layers, the oil seal gasket is arranged below the sealing gasket and extends into the rod sleeve area, and the inner walls of the oil seal gasket and the sealing gasket are in sliding connection with the surface of the rod body.

[0013] In some embodiments, the cooling member further comprises a cooling pipeline wrapped around the surface of the rod sleeve, and the upper surface of the base is fixedly connected with a protective sleeve, and the cooling pipeline is located in the protective sleeve and extends out of the protective sleeve at both ends.

[0014] In some embodiments, one end of the cooling pipeline is in communication with the inner cavity of the circulating pool, the other end of the cooling pipeline is in communication with the water outlet of the circulating pump through a pipeline, and the water inlet of the circulating pump is in communication with the inner cavity of the circulating pool through a pipeline.

[0015] Compared with the prior art, the utility model has the following remarkable advantages:

[0016] Firstly, the utility model discloses a sliding sheet, a ball and a sliding groove, when the piston rod works, the sliding between the rod body and the rod sleeve is converted into the sliding between the ball and the sliding groove, the contact area of the rod body and the sleeve rod is reduced, the friction surface and the heat generated by friction are reduced, meanwhile, the isolation gasket, the oil seal gasket and the sealing gasket can ensure that the oil in the rod sleeve is not taken out by the rod body, and the sealing property is guaranteed.

[0017] Secondly, the utility model discloses a cooling member, after the piston rod works for a long time, the user can start the circulating pump and the semiconductor refrigerating sheet, so that the water in the cooling pipeline starts to flow and is replaced by the low-temperature water in the circulating pool, which is cooled by the semiconductor refrigerating sheet, the water in the cooling pipeline can gradually take away the temperature of the rod sleeve, the high-temperature condition of the piston rod is prevented, the deformation of the sealing member caused by high temperature is prevented, and the effect of preventing liquid leakage is further strengthened.

[0018] The problem that the sealing member is deformed due to the friction loss and the friction heat generated by long-time work of the existing piston rod and then liquid leakage occurs is solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be explained further in combination with the drawings and embodiments:

[0020] Figure 1 It is the front view structure schematic diagram provided in an embodiment of the utility model;

[0021] Figure 2 is a cooling member (protective sleeve cross section) structure schematic view provided by the utility model in an embodiment;

[0022] Figure 3 is a rod body inside (cross section) structure schematic view provided by the utility model in an embodiment;

[0023] Figure 4 is a sliding sheet structure schematic view provided by the utility model in an embodiment;

[0024] Figure 5 is a cover inside (cross section) structure schematic view provided by the utility model in an embodiment.

[0025] Mark explanation:

[0026] 1, base; 2, rod sleeve; 3, rod body; 4, sliding sheet; 5, sliding groove; 6, ball; 7, cover; 8, oil seal washer; 9, sealing washer; 10, cooling member; 1001, circulating pump; 1002, circulating pool; 1003, semiconductor refrigerating sheet; 1004, cooling pipeline; 11, spring; 12, isolation washer. Specific implementation

[0027] The utility model will be described in detail below, and the technical scheme in the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0028] The utility model improves a piston rod with anti-leakage function, and the technical scheme of the utility model is:

[0029] As Figure 1 shown, a piston rod with anti-leakage function, including base 1, the upper surface of base 1 is fixedly connected with rod sleeve 2, rod sleeve 2 is provided with rod body 3, still including;

[0030] Sliding sheet 4, sliding sheet 4 is fixedly connected with the surface of rod body 3, the outer surface of sliding sheet 4 is slidably connected with the inner wall of rod sleeve 2, the cross section of sliding sheet 4 is concave, for accommodating ball 6;

[0031] Multiple sliding grooves 5, multiple sliding grooves 5 are equally divided in the inner wall of sleeve rod, the inner wall of sliding sheet 4 is rotatably connected with ball 6, ball 6 is slidably connected with sliding groove 5, ball 6 is actually subjected to the double position of sliding groove 5 and sliding sheet 4, when sliding block moves along with rod body 3, ball 6 can only be rolled in the corresponding sliding groove 5 in up-down direction;

[0032] The cover 7 is fixedly connected with the top end of the rod body 3, and the cover 7 is fully surrounded except the area with the size of the cross section of the rod body 3, so that the sliding groove 5 is completely covered. The cover 7 is provided with an oil seal washer 8 and a sealing washer 9.

[0033] The cooling member 10 comprises a circulating pump 1001 and a circulating pool 1002 arranged on one side of the base 1. The cooling member is partially wrapped outside the rod sleeve 2. The circulating pool 1002 is provided with a semiconductor refrigerating fin 1003 on one side. The cold end of the semiconductor refrigerating fin 1003 is attached to one side of the circulating pool 1002. The hot end of the semiconductor refrigerating fin 1003 is provided with a heat dissipation fin. The semiconductor refrigerating fin 1003 is connected with an external power supply.

[0034] As shown in the drawings, Figure 3 In an embodiment, the bottom end of the rod body 3 is fixedly connected with a spring 11. The other end of the spring 11 is fixedly connected with the inner bottom wall of the rod sleeve 2. The spring 11 is arranged to reduce the impact strength and ensure the service life when the rod body 3 moves up and down and collides with the bottom of the rod sleeve 2.

[0035] As shown in the drawings, Figure 4 In an embodiment, the upper surface of the sliding sheet 4 is provided with an isolation washer 12. The shape of the isolation washer 12 is matched with the sliding groove 5. The isolation washer 12 can effectively prevent the oil from overflowing to the top end of the rod sleeve 2 along the sliding groove 5. The isolation washer 12 is in sliding connection with the sliding groove 5.

[0036] As shown in the drawings, Figure 5 In an embodiment, the cover 7 is provided with two layers. The oil seal washer 8 and the sealing washer 9 are located in different layers. The oil seal washer 8 is located below the sealing washer 9 and extends into the area of the rod sleeve 2. The oil seal washer 8 can further ensure that the rod body 3 does not take the oil out of the rod sleeve 2, thereby ensuring the sealing performance. The inner walls of the oil seal washer 8 and the sealing washer 9 are in sliding connection with the surface of the rod body 3.

[0037] As shown in the drawings, Figure 2 In an embodiment, the cooling member 10 further comprises a cooling pipeline 1004 wrapped on the surface of the rod sleeve 2. The cooling pipeline 1004 is uniformly distributed in a spiral shape outside the rod sleeve 2. The upper surface of the base 1 is fixedly connected with a protective sleeve. The protective sleeve is provided with a hole for the cooling pipeline 1004 to pass through. The cooling pipeline 1004 is located in the protective sleeve and extends out of the protective sleeve at both ends.

[0038] In an embodiment, one end of the cooling pipeline 1004 is in communication with the inner cavity of the circulating pool 1002. The other end of the cooling pipeline 1004 is in communication with the water outlet of the circulating pump 1001 through a pipeline. The circulating pump 1001 is connected with an external power supply component. The water inlet of the circulating pump 1001 is in communication with the inner cavity of the circulating pool 1002 through a pipeline.

[0039] The specific working method is: when the piston rod with the anti-leakage function is used, the sliding between the rod body 3 and the sleeve 2 is converted into the sliding between the ball 6 and the sliding groove 5 in the use process of the piston rod, the contact area between the rod body 3 and the sleeve is reduced, the friction surface and the heat generated by the friction are reduced, at the same time, the isolation washer 12, the oil seal washer 8 and the sealing washer 9 can ensure that the oil in the sleeve 2 is not taken out by the rod body 3, and the sealing property is guaranteed, and when being in the working state for a long time, the user can start the circulating pump 1001 and the semiconductor refrigeration sheet 1003, so that the water in the cooling pipeline 1004 starts to flow and is replaced by the low-temperature water in the circulating pool 1002 which is cooled by the semiconductor refrigeration sheet 1003, the water in the cooling pipeline 1004 can gradually take away the temperature of the sleeve 2, the whole high-temperature condition of the piston rod is prevented, the sealing element is prevented from being deformed due to high temperature, and the effect of preventing liquid leakage is further strengthened.

[0040] The technical means disclosed by the utility model scheme is not only limited to the technical means disclosed by the above technical means, but also includes the technical scheme composed by the above technical features and equivalent replacement. The unfinished matters of the utility model belong to the common knowledge of the person skilled in the art.

Claims

1. A piston rod with a leak-proof function, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected with a rod sleeve (2), the rod sleeve (2) is provided with a rod body (3), further comprising; A sliding sheet (4) is fixedly connected with the surface of the rod body (3), and the outer surface of the sliding sheet (4) is slidably connected with the inner wall of the rod sleeve (2); A plurality of sliding grooves (5) are equally provided on the inner wall of the rod sleeve, the inner wall of the sliding sheet (4) is rotatably connected with a ball (6), and the ball (6) is slidably connected with the sliding groove (5); A cover (7) is fixedly connected with the top end of the rod body (3), and the cover (7) is respectively provided with an oil seal washer (8) and a sealing washer (9); A cooling member (10) comprises a circulating pump (1001) and a circulating pool (1002) respectively arranged on one side of the base (1), the cooling member is partially wrapped outside the rod sleeve (2), one side of the circulating pool (1002) is provided with a semiconductor refrigeration sheet (1003), and the cold end of the semiconductor refrigeration sheet (1003) is attached to one side of the circulating pool (1002).

2. The piston rod with a leak-proof function according to claim 1, characterized in that: The bottom end of the rod body (3) is fixedly connected with a spring (11), and the other end of the spring (11) is fixedly connected with the inner bottom wall of the rod sleeve (2).

3. The piston rod with a leak-proof function according to claim 1, characterized in that: The upper surface of the sliding sheet (4) is provided with an isolation washer (12), the shape of the isolation washer (12) is matched with the sliding groove (5), and the isolation washer (12) is slidably connected with the sliding groove (5).

4. The piston rod with a leak-proof function according to claim 1, characterized in that: The cover (7) is provided with two layers, the oil seal washer (8) and the sealing washer (9) are located in different layers, the oil seal washer (8) is located below the sealing washer (9) and extends into the area of the rod sleeve (2), and the inner walls of the oil seal washer (8) and the sealing washer (9) are slidably connected with the surface of the rod body (3).

5. The piston rod with a leak-proof function according to claim 1, characterized in that: The cooling member (10) further comprises a cooling pipeline (1004) wrapped on the surface of the rod sleeve (2), the upper surface of the base (1) is fixedly connected with a protective sleeve, and the cooling pipeline (1004) is located in the protective sleeve and extends out of the protective sleeve through two ports.

6. A piston rod with a leak-proof function according to claim 5, characterized in that: One end of the cooling pipeline (1004) is communicated with the inner cavity of the circulating pool (1002), the other end of the cooling pipeline (1004) is communicated with the water outlet of the circulating pump (1001) through a pipeline, and the water inlet of the circulating pump (1001) is communicated with the inner cavity of the circulating pool (1002) through a pipeline.

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