Press fitting mechanism for semi-automatic extraction rotary joint

Abstract

The utility model discloses a semi-automatic extraction rotary joint press-fitting mechanism which comprises a bottom plate, the bottom plate is in sliding connection with a fixing seat used for installing a rotary joint, a press-fitting device is installed above the bottom plate, and the bottom end of the press-fitting device is fixedly provided with a pressing disc used for press-fitting a clamp spring on the rotary joint. The pushing cylinder is adopted to achieve movement of the rotary joint, the press-fitting air cylinder is adopted to achieve press-fitting of the rotary joint, the stroke and pressure of the press-fitting air cylinder can be set in advance, moderate pressure can be kept when the snap spring is assembled, and the risk that the snap spring cannot be installed in the press-fitting air cylinder or graphite sealing rings on a static ring and a movable ring are crushed is avoided.

Description

Technical Field

[0001] The utility model relates to an extraction joint, in particular to a press-fitting mechanism of a semi-automatic extraction rotary joint. Background Art

[0002] Extraction is one of the methods used in organic chemistry laboratories to purify and refine compounds. Through extraction, the desired substance can be extracted from a solid or liquid mixture. The extraction device needs to collect the effluent during the extraction process. At this time, an adapter is needed to connect the syringe and the collection container. The specific structure of the semi-automatic extraction rotary joint is as follows Figure 1 As shown, it is composed of a housing 11 and a spring 12, a mechanical seal moving ring 13 and a stationary ring 14 installed inside the housing, a bearing 15, a retaining ring 16, and a gasket 17. The parts of the rotary joint that fail and are damaged are generally the bearing 15 and the moving ring 13. The graphite sealing ring on the stationary ring 14 is easily damaged, so it needs to be replaced frequently. When replacing, it is necessary to first put in the spring 12, then put in the stationary ring 14, the moving ring 13, the bearing 15, and the gasket 17 in sequence, and finally use external force to act on the top surface of the moving ring 13 to press the retaining ring 16 into the housing 1. Since the spring 12 has a large resilience, if the force is too small when assembling the retaining ring 16, it will be pressed shallowly, resulting in the retaining ring 16 not being installed; if the force is too large, it is easy to crush the graphite sealing rings on the stationary ring 14 and the moving ring 13. Therefore, when assembling the retaining ring 16, a moderate force must be maintained to install it, and a pressing mechanism needs to be invented to achieve it. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a press-fitting mechanism for a semi-automatic extraction rotary joint.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A press-fitting mechanism for a semi-automatic extraction rotary joint comprises a base plate, a fixing seat for installing the rotary joint is slidably connected to the base plate, a press-fitting device is installed above the base plate, and a pressure plate for press-fitting a retaining ring on the rotary joint is fixed at the bottom end of the press-fitting device.

[0006] In a further solution, a guide rail is fixedly provided on the base plate, and a slider is slidably connected to the guide rail; a propulsion cylinder is installed on the base plate, and the movable end of the propulsion cylinder is fixedly connected to the fixed seat, and the bottom end of the fixed seat is fixed on the slider and moves along the guide rail together with the slider.

[0007] In a further solution, a support rod is fixedly provided on the bottom plate, an upper pressing plate is fixedly provided on the top end of the support rod, and the pressing device is installed on the upper pressing plate.

[0008] In a further solution, there are two guide rails, which are symmetrically installed on both sides of the propulsion cylinder.

[0009] In a further solution, the fixing seat comprises a fixing plate fixedly mounted on the sliding block, a connecting seat is fixed to the top end of the fixing plate, and the connecting seat is matched and snap-fitted with the bottom end of the shell on the rotating joint.

[0010] In a further embodiment, the press-fitting device is a press-fitting cylinder.

[0011] The utility model adopts a press-fitting mechanism to press-fit the retaining ring on the rotary joint. Before installation, the push cylinder is in a contracted state at the initial position, and then the housing of the rotary joint is clamped on the fixed seat, and then the spring, static ring, dynamic ring, bearing, gasket, retaining ring are placed in the housing in sequence, and the push cylinder is started, and its cylinder shaft works and extends, pushing the fixed seat to move far away on the guide rail until it moves to the installation position. At this time, the press-fitting cylinder works, and its piston end extends, moving downward with the pressure plate, squeezing the dynamic ring on the rotary joint. When it is pressed to the set position, the press-fitting cylinder stops working; then the press-fitting cylinder returns to its position, and the push cylinder also returns to its position, and moves the fixed seat to the initial position, completing the installation of the rotary joint.

[0012] The present application adopts a thrust cylinder to realize the movement of the rotary joint and a press-fitting cylinder to realize the press-fitting of the rotary joint. The stroke and pressure of the press-fitting cylinder can be set in advance, and a moderate pressure can be maintained when assembling the retaining ring, avoiding the risk of the retaining ring failing to be installed or crushing the graphite sealing rings on the static ring and the dynamic ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the structural explosion diagram of the rotary joint.

[0014] Figure 2 It is a structural schematic diagram of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the fixing seat in the utility model.

[0016] In the figure: 1-rotating joint, 11-housing, 12-spring, 13-moving ring, 14-static ring, 15-bearing, 16-circlip, 17-washer;

[0017] 2-base plate, 3-guide rail, 4-slider, 5-thrust cylinder, 51-fixed seat, 52-cylinder shaft, 53-cylinder head bracket, 6-fixed seat, 61-fixed plate, 62-connecting seat, 7-support rod, 8-upper pressure plate, 9-pressing cylinder, 91-pressure plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] like Figure 1 The figure shows an exploded schematic diagram of a rotary joint 1, which is composed of a housing 11, a spring 12, a mechanical seal dynamic ring 13 and a static ring 14, a bearing 15, a retaining ring 16, and a gasket 17 installed inside the housing.

[0020] like Figure 2 As shown, a press-fitting mechanism for semi-automatic extraction of a rotary joint comprises a bottom plate 2, a fixing seat 6 for installing the rotary joint is slidably connected to the bottom plate 2, a press-fitting device is installed above the bottom plate 2, and a pressure plate 91 for pressing the fixing seat 6 to install the retaining ring 16 on the rotary joint 1 is fixed at the bottom end of the press-fitting device. During installation, the housing of the rotary joint is first connected to the fixing seat 6, and then the spring, static ring, dynamic ring, bearing, gasket, retaining ring are placed in sequence, and moved to the bottom of the pressure plate. The press-fitting device drives the pressure plate to press down at a set pressure to install the rotary joint.

[0021] In a further solution, a guide rail 3 is fixedly provided on the bottom plate 2, and a slider 4 is slidably connected to the guide rail; a propulsion cylinder 5 is installed on the bottom plate, and the movable end of the propulsion cylinder 5 is fixedly connected to the fixed seat 6, and the bottom end of the fixed seat 6 is fixed on the slider 4 and moves along the guide rail 3 with the slider 4. Furthermore, in order to improve the stability of movement, there are two guide rails 3, which are symmetrically installed on both sides of the propulsion cylinder 5. The propulsion cylinder 5 can drive the rotary joint to move.

[0022] In a further solution, a support rod 7 is fixedly provided on the bottom plate 2 , an upper pressing plate 8 is fixedly provided on the top end of the support rod 7 , and the press-fitting device is installed on the upper pressing plate 8 .

[0023] In a further solution, the fixing seat 6 comprises a fixing plate 61 fixedly mounted on the slider 4, a connecting seat 62 is fixed to the top of the fixing plate 61, and the connecting seat 62 is matched and snap-fitted with the bottom end of the housing 11 on the rotary joint 1. In this embodiment, the connecting seat 62 and the housing 11 can be threadedly connected or clearance-fitted. The press-fitting device is a press-fitting cylinder 9, and the propulsion cylinder 5 is a propulsion cylinder.

[0024] Before installation, the push cylinder is in the retracted state at the initial position, and then the housing of the rotary joint is clamped on the fixed seat, and then the spring, static ring, dynamic ring, bearing, gasket, and retaining ring are placed in the housing in sequence. The push cylinder is started, and its cylinder shaft works and extends, pushing the fixed seat to move far away on the guide rail until it moves to the installation position. At this time, the press cylinder works, its piston end extends, and moves downward with the pressure plate to squeeze the dynamic ring on the rotary joint. When it is pressed to the set position, the press cylinder stops working; then the press cylinder returns to its position, and the push cylinder also returns to its position, and moves the fixed seat to the initial position to complete the installation of the rotary joint.

[0025] The present application adopts a thrust cylinder to realize the movement of the rotary joint and a press-fitting cylinder to realize the press-fitting of the rotary joint. The stroke and pressure of the press-fitting cylinder can be set in advance, and a moderate pressure can be maintained when assembling the retaining ring, avoiding the risk of the retaining ring failing to be installed or crushing the graphite sealing rings on the static ring and the dynamic ring.

[0026] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent changes made using the present invention are within the patent protection scope of the present invention.

Claims

1. A press-fitting mechanism for a semi-automatic extraction rotary joint, comprising a bottom plate (2), characterized in that: A fixing seat (6) for mounting a rotary joint is slidably connected to the bottom plate (2), a pressing device is mounted above the bottom plate (2), and a pressure plate (91) for pressing a retaining ring (16) on the rotary joint (1) is fixedly disposed at the bottom end of the pressing device.

2. The press-fitting mechanism of a semi-automatic extraction rotary joint according to claim 1, characterized in that: A guide rail (3) is fixedly provided on the base plate (2), and a slider (4) is slidably connected to the guide rail; a propulsion cylinder (5) is installed on the base plate, and the movable end of the propulsion cylinder (5) is fixedly connected to the fixed seat (6); the bottom end of the fixed seat (6) is fixed on the slider (4) and moves along the guide rail (3) together with the slider (4).

3. The press-fitting mechanism of a semi-automatic extraction rotary joint according to claim 1, characterized in that: A support rod (7) is fixedly provided on the bottom plate (2), an upper pressing plate (8) is fixedly provided on the top end of the support rod (7), and the pressing device is installed on the upper pressing plate (8).

4. The press-fitting mechanism of a semi-automatic extraction rotary joint according to claim 2, characterized in that: There are two guide rails (3), which are symmetrically installed on both sides of the propulsion cylinder (5).

5. The press-fitting mechanism of a semi-automatic extraction rotary joint according to claim 2, characterized in that: The fixing seat (6) comprises a fixing plate (61) fixedly mounted on the slider (4), a connecting seat (62) being fixed on the top end of the fixing plate (61), and the connecting seat (62) being matched and snap-fitted with the bottom end of the shell (11) on the rotary joint (1).

6. The press-fitting mechanism of a semi-automatic extraction rotary joint according to claim 1, characterized in that: The press-fitting device is a press-fitting cylinder (9).

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