Efficient piston structure

Abstract

The utility model relates to the technical field of pistons, in particular to an efficient piston structure which comprises a crosshead body, a connecting rod is hinged to one side of the crosshead body, a piston rod is arranged on the other side of the crosshead body in a threaded mode, a piston body is fixedly arranged at one end of the piston rod, a back cap is arranged on the piston rod in a threaded mode, and a limiting part is arranged at one end of the piston rod. The limiting part comprises a plurality of clamping blocks arranged in an annular array, the limiting part comprises an elastic contraction block and has good elastic restoring force, when external force disappears, the elastic contraction block can rapidly restore to the original shape, it is helpful for keeping the clamping blocks tightly attached to the inner wall of the crosshead body, the piston rod is prevented from loosening or falling off in the using process, and the service life of the piston rod is prolonged. The piston rod is flexibly detached through the adjusting part, the piston body is provided with the heat dissipation holes, the heat exchange area with the surrounding environment is increased, heat transfer and dissipation are accelerated, the temperature of the piston body is effectively reduced, and deformation, damage or other faults caused by the too high temperature of the piston body are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to piston technical field, especially for high -efficient piston structure. BACKGROUND

[0002] With the development of industry, the performance requirements of the compressor are getting higher and higher, including improving the compression efficiency, reducing the energy consumption, enhancing the stability and durability, etc. The compressor operates under various complex conditions, such as high temperature, high pressure, corrosive environment, etc. Therefore, the piston structure needs to be able to adapt to these special conditions.

[0003] During the operation of the compressor, the piston rod and its related components may need to be replaced or repaired due to wear, corrosion or failure. Quickly disassembling the piston rod can shorten the downtime and improve the maintenance efficiency. If the disassembly and reinstallation process of the piston rod is too complicated, it may affect the overall operation efficiency of the compressor. Therefore, it is necessary to develop a piston rod structure that can be quickly disassembled and installed.

[0004] The piston rod is not stable in fixing, not easy to disassemble, and the piston body is high in temperature, which causes serious wear problem, and further causes the problems of sealing performance decline and compressor efficiency reduction. In view of this, the high-efficiency piston structure is provided. SUMMARY

[0005] The main purpose of the utility model is to provide a sampling medical kit to solve the problem of the piston rod in the related art, which is not stable in fixing, not easy to disassemble, and the piston body is high in temperature, which causes serious wear problem, and further causes the problems of sealing performance decline and compressor efficiency reduction.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a high-efficiency piston structure is provided, which comprises a crosshead body, a connecting rod is hingedly arranged on one side of the crosshead body, a piston rod is threadedly arranged on the other side of the crosshead body, a piston body is fixedly arranged on one end of the piston rod, a back cap is threadedly arranged on the piston rod, a limiting part is arranged on one end of the piston rod, the limiting part comprises a plurality of clamping blocks arranged in an annular array, the clamping blocks are used for clamping the crosshead body side wall to fix the piston rod, and adjusting parts are fixedly arranged at the upper and lower ends of the crosshead body.

[0007] Further, the limiting part further comprises an elastic contraction block, the bottom surface and the side surface of the clamping block are fixedly connected with the elastic contraction block.

[0008] Further, a plurality of grooves are arranged in an annular array on one end of the piston rod, the clamping block and the elastic contraction block are arranged in the grooves, and the side wall of the elastic contraction block is closely attached to the side wall of the groove.

[0009] Further, the adjusting part comprises an arc-shaped block, a screw rod is rotationally arranged at the top of the arc-shaped block, a connecting block is fixedly arranged at the bottom of the screw rod, and the connecting block is rotationally installed in the arc-shaped block.

[0010] Further, screw grooves are formed in the upper and lower ends of the cross head body, and the screw rod is screwedly installed in the screw grooves.

[0011] Further, supporting rings are fixedly arranged at the left and right ends of the piston body, and a plurality of piston rings are fixedly arranged on the piston body and located between the supporting rings.

[0012] Further, a plurality of heat dissipation holes are arranged in the annular array of the side wall of the piston body.

[0013] Compared with the prior art, the high-efficiency piston structure has the following beneficial effects:

[0014] 1. In the high-efficiency piston structure, the limiting part is arranged, and the elastic contraction block has good elastic restoring force; when the external force disappears, the elastic contraction block can quickly recover to the original shape; this characteristic helps to keep the clamping block closely attached to the inner wall of the cross head body, prevents the piston rod from loosening or falling off during use, and the piston rod can be flexibly disassembled through the adjusting part.

[0015] 2. In the high-efficiency piston structure, the piston body is provided with heat dissipation holes, the heat exchange area with the surrounding environment is increased, the heat transfer and dissipation are accelerated, the temperature of the piston body is effectively reduced, and the piston body is prevented from deforming, being damaged or causing other faults due to the excessively high temperature. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the high-efficiency piston structure in the preferred embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the high-efficiency piston structure in the preferred embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall structure of the high-efficiency piston structure in the preferred embodiment of the utility model; Figure 2 It is an enlarged schematic diagram of the structure at A in the preferred embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of the overall structure of the piston rod in the preferred embodiment of the utility model;

[0020] Figure 5 It is an enlarged schematic diagram of the structure at B in the preferred embodiment of the utility model; Figure 4 It is an enlarged schematic diagram of the structure at B in the preferred embodiment of the utility model;

[0021] Figure 6 It is a schematic diagram of the planar structure of the high-efficiency piston structure in the preferred embodiment of the utility model;

[0022] Figure 7 For the preferred embodiment of the utility model Figure 6 Structure amplification schematic view at C;

[0023] Figure 8 For the preferred embodiment of the utility model adjusting part structure schematic view;

[0024] Figure 9 For the preferred embodiment of the utility model piston body overall structure schematic view.

[0025] Illustration:

[0026] 1, crosshead body;11, screw groove;

[0027] 2, piston rod;21, clamping block;22, elastic shrinkage block;23, recess;

[0028] 3, back cap;4, piston body;41, heat dissipation hole;42, support ring;43, piston ring;

[0029] 5, connecting rod;6, adjusting part;61, arc block;62, screw;63, connecting block. Specific embodiments

[0030] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the preferred embodiments and the drawings.

[0031] Please refer to Figures 1-9 The embodiment aims to provide an efficient piston structure, comprising a crosshead body 1, a connecting rod 5 is hingedly arranged on one side of the crosshead body 1, a piston rod 2 is threadedly arranged on the other side of the crosshead body 1, a piston body 4 is fixedly arranged on one end of the piston rod 2, a back cap 3 is threadedly arranged on the piston rod 2, a limiting part is arranged on one end of the piston rod 2, the limiting part comprises a plurality of clamping blocks 21 arranged in an annular array, the clamping blocks 21 are used for clamping the side wall of the crosshead body 1 to fix the piston rod 2, and an adjusting part 6 is fixedly arranged at the upper and lower ends of the crosshead body 1.

[0032] The crosshead body 1 is a key component connecting the connecting rod 5 and the piston rod 2. It plays a role of a bridge, converts the reciprocating motion of the connecting rod 5 into the linear motion of the piston rod 2, and then drives the piston body 4 to reciprocate in the cylinder. The back cap 3 is a component threadedly mounted on the piston rod 2, used for fixing the piston rod 2.

[0033] The limiting part further comprises an elastic shrink block 22, the bottom surface and side surface of the clamping block 21 are fixedly connected with the elastic shrink block 22, forming a stable overall structure, the internal structure of the elastic shrink block 22 comprises a plurality of tiny elastic fibers, which can deform and store energy when subjected to external force, and quickly restore the original shape when the external force disappears, so that the elastic shrink block 22 has excellent elasticity and wear resistance.

[0034] The piston rod 2 is provided with a plurality of recesses 23 in the form of a ring array at one end, the clamping block 21 and the elastic shrink block 22 are arranged in the recesses 23, and the side wall of the elastic shrink block 22 is closely fitted with the side wall of the recess 23, which not only enhances the stability of the structure, but also ensures that the elastic shrink block 22 can effectively shrink and expand when subjected to external force. One side of the clamping block 21 is hinged to one side of the recess 23, which allows the clamping block 21 to rotate along the side of the recess 23 within a certain range, thereby increasing its flexibility during use.

[0035] In the initial state of the limiting part, the elastic shrink block 22 is in a natural expansion state. This expansion state causes the clamping block 21 to be subjected to an outward pushing force, thereby guiding the side wall of the clamping block 21 to tilt outward, which prepares for the contact and extrusion of the clamping block 21 with the inner wall of the cross head body 1 in the subsequent rotation process.

[0036] One end of the piston rod 2 is provided with a thread, which is matched with the threaded hole in the cross head body 1, so as to realize the close connection between the piston rod 2 and the cross head body 1. When the piston rod 2 starts to rotate into the cross head body 1 through the thread, the side wall of the clamping block 21 first contacts the inner wall of the cross head body 1. With the continuous rotation of the piston rod 2, the side wall of the clamping block 21 is subjected to an increasing extrusion force from the inner wall of the cross head body 1. Under the action of the extrusion force, the elastic shrink block 22 begins to shrink, which causes the clamping block 21 to gradually move inward, i.e. to be extruded into the recess 23. At the same time, the clamping block 21 gradually fits with the side wall of the recess 23, which enhances the stability of the clamping block 21 in the recess 23. When the piston rod 2 is completely rotated into the cross head body 1, the clamping block 21 is no longer subjected to the extrusion force from the inner wall of the cross head body 1. At this time, the elastic shrink block 22 begins to expand due to its elastic restoring force, which causes the clamping block 21 to be lifted, with one side of its side wall closely fitted with the inner wall of the cross head body 1. This close fit not only ensures the stability of the longitudinal position of the piston rod 2 in the cross head body 1, but also improves the connection reliability and durability of the entire piston structure.

[0037] The adjusting part 6 includes an arc-shaped block 61, the bottom of which is provided with a rubber pad. The rubber pad not only increases the friction between the arc-shaped block 61 and the crosshead body 1 or the locking block 21, preventing slippage, but more importantly, it acts as a buffer layer, effectively preventing the arc-shaped block 61 from causing wear on the surface of the locking block 21 when it is pressing it. The softness and elasticity of the rubber pad ensure the smoothness of the pressing process and the protection of the locking block 21.

[0038] A screw 62 is rotatably mounted on the top of the arc-shaped block 61. The top has a hexagonal head design, which makes it easy to rotate the screw 62 with a screwdriver. A connecting block 63 is fixedly mounted on the bottom of the screw 62. The connecting block 63 is rotatably installed inside the arc-shaped block 61. This means that when the screw 62 rotates, the connecting block 63 can rotate with it, but it will not drive the arc-shaped block 61 to rotate together. This ensures that the rotation of the screw 62 can be converted into linear movement of the arc-shaped block 61, without causing unnecessary rotational movement.

[0039] Both the upper and lower ends of the crosshead body 1 are provided with threaded grooves 11. The screw 62 is threaded into the threaded grooves 11. The threaded grooves 11 have a precise thread profile and fit tightly with the threaded portion of the outer wall of the screw 62. This not only ensures that the screw 62 can move smoothly and accurately along it, but also provides a strong fixing force through the locking effect of the threads. As the arc-shaped block 61 moves downward, its rubber pad gradually contacts and squeezes the locking block 21. When subjected to external pressure, the locking block 21 will retract into the groove 23, ensuring that the locking block 21 can disengage from the inner wall of the crosshead body 1, thereby releasing the fixing effect on the piston rod 2. After the locking block 21 is completely retracted into the groove 23, the connection between the piston rod 2 and the crosshead body 1 becomes loose. At this time, the user can easily rotate the piston rod 2. Due to the retraction of the locking block 21, the piston rod 2 is no longer fixed and can therefore be smoothly removed from the crosshead body 1.

[0040] This design not only simplifies the disassembly process of piston rod 2 but also improves the stability and durability of the entire piston assembly. Piston rod 2 can be easily disassembled by rotating screw 62, without the need for complicated tools or procedures. Furthermore, the addition of rubber pads effectively protects the locking block 21 from wear, extending the service life of the piston assembly.

[0041] Support rings 42 are fixedly installed at both ends of the piston body 4. Their main function is to provide additional support to ensure that the piston body 4 can maintain a stable movement trajectory in the cylinder. The design of the support rings 42 not only enhances the structural strength of the piston body 4, but also reduces the wear between the piston and the cylinder wall, extending the service life of the piston assembly. In addition, the precise installation position of the support rings 42 also ensures the alignment of the piston body 4 in the cylinder, preventing performance degradation caused by uneven wear. Several piston rings 43 are fixedly installed on the piston body 4, and the piston rings 43 are located between the support rings 42.

[0042] The piston body 4 has several heat dissipation holes 41 arranged in a ring array on one side wall. The main function of these heat dissipation holes 41 is to enhance the heat dissipation performance of the piston body 4 and reduce the heat generated during operation. The ring array layout of the heat dissipation holes 41 ensures that heat can be evenly transferred from the inside of the piston body 4 to the external environment, avoiding local overheating. In particular, the heat dissipation holes 41 are located near the insertion end of the piston rod 2. This area often generates significant frictional heat and stress concentration due to the connection between the piston rod 2 and the piston body 4 and the reciprocating motion of the piston within the cylinder. Therefore, the addition of the heat dissipation holes 41 effectively helps cool this area, reducing potential problems caused by thermal expansion and stress concentration.

[0043] In practical use, the threaded end of the piston rod 2 is aligned with the threaded hole of the crosshead body 1, and the piston rod 2 is rotated. As the piston rod 2 is screwed in, the side wall of the locking block 21 contacts the inner wall of the crosshead body 1 and gradually experiences a squeezing force from the inner wall. Under the action of the squeezing force, the elastic contraction block 22 begins to contract, driving the locking block 21 to move into the groove 23. When the piston rod 2 is fully screwed into the crosshead body 1, the locking block 21 is supported by the elastic restoring force of the elastic contraction block 22 and fits tightly against the inner wall of the crosshead body 1, thereby fixing the position of the piston rod 2. In this process, the heat dissipation hole 41 helps to reduce the heat generated by the piston body 4 during operation, especially in the area near the insertion end of the piston rod 2. When it is necessary to disassemble the piston rod 2, first adjust the position of the arc block 61 by rotating the screw 62. As the arc block 61 moves downward, its rubber pad will gradually squeeze the locking block 21, causing it to retract into the groove 23. When the locking block 21 is completely retracted into the groove 23, the locking block 21 has retracted and released the fixing effect on the piston rod 2. Rotate the piston rod 2 until it is completely unscrewed from the threaded hole of the crosshead body 1.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A high-efficiency piston structure, comprising a crosshead body (1), a connecting rod (5) hinged to one side of the crosshead body (1), a piston rod (2) threaded to the other side of the crosshead body (1), a piston body (4) fixedly mounted at one end of the piston rod (2), and a back cap (3) threaded onto the piston rod (2), characterized in that, The piston rod (2) is provided with a limiting part at one end. The limiting part includes a plurality of locking blocks (21) arranged in a ring array. The locking blocks (21) are used to lock the piston rod (2) on the side wall of the crosshead body (1). The upper and lower ends of the crosshead body (1) are both fixedly provided with adjustment parts (6).

2. The high-efficiency piston structure according to claim 1, characterized in that, The limiting part also includes an elastic contraction block (22), and the bottom and side surfaces of the locking block (21) are fixedly connected to the elastic contraction block (22).

3. The high-efficiency piston structure according to claim 2, characterized in that, The piston rod (2) has several grooves (23) arranged in a ring array at one end. The locking block (21) and the elastic contraction block (22) are arranged in the grooves (23), and the side wall of the elastic contraction block (22) is in close contact with the side wall of the groove (23).

4. The high-efficiency piston structure according to claim 1, characterized in that, The adjustment part (6) includes an arc-shaped block (61), a screw (62) is rotatably provided on the top of the arc-shaped block (61), and a connecting block (63) is fixedly provided on the bottom of the screw (62). The connecting block (63) is rotatably installed inside the arc-shaped block (61).

5. The high-efficiency piston structure according to claim 4, characterized in that, The crosshead body (1) has threaded grooves (11) extending through both the upper and lower ends, and the screw (62) is threaded into the threaded grooves (11).

6. The high-efficiency piston structure according to claim 1, characterized in that, Support rings (42) are fixedly provided on the left and right ends of the piston body (4), and a plurality of piston rings (43) are fixedly provided on the piston body (4), and the piston rings (43) are located between the support rings (42).

7. The high-efficiency piston structure according to claim 1, characterized in that, The piston body (4) has several heat dissipation holes (41) arranged in a ring array on one side wall.

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