High-pressure sealing element of homogenizer

Abstract

The utility model discloses a high-pressure sealing element of a homogenizer. The high-pressure sealing element consists of a universal seal and a gasket, the universal seal comprises a universal seal body and an inclined ring spring, a plurality of inner lip bodies and outer lip bodies which are longitudinally distributed at intervals are formed on the inner side and the outer side of the upper end of the universal seal body respectively, and the inner lip bodies and the outer lip bodies are distributed on the inner side portion and the outer side portion of the inclined ring spring. And the gasket is cylindrical and is connected to the lower end of the universal seal. The sealing performance is in an extremely high state under normal pressure and low pressure. Even in a high-pressure state, the multiple inner lip bodies and the multiple outer lip bodies bear pressure at the same time, elastic supporting force is provided through the inclined ring spring, and therefore the universal plug seal body has the excellent sealing effect. A gap between the gasket and a groove of the cylinder body can be reduced to a certain extent, so that the universal seal can be assisted to bear pressure, the universal seal has excellent sealing performance in a high-pressure state, a guide function can be directly realized, a guide element does not need to be additionally arranged, a large amount of space is saved, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a high-pressure sealing component for a homogenizer. Background Art

[0002] High-pressure homogenizer, also known as high-pressure fluid nano-homogenizer, can make materials in suspension state flow through a cavity with a special internal structure at high speed under ultra-high pressure, causing a series of changes in the physical, chemical, and structural properties of the materials, ultimately achieving a homogenized effect.

[0003] The plunger in the existing homogenizer is generally sealed with a rectangular sealing ring, which has a rectangular cross-section and realizes a sliding seal between the plunger and the cylinder body through its own elastic deformation. However, the operating environment pressure of the plunger is relatively high, which can reach 100 MPa or higher. The rectangular sealing ring has a poor sealing effect in this pressure environment. Once the pressure continues to rise to more than 80 MPa, it will start to leak.

[0004] The Chinese utility model patent with authorization announcement number CN217221352U discloses a homogenizer sealed cooling device, which includes a plunger, a sealing sleeve, a grease cavity, and a cooling mechanism. The sealing sleeve is sleeved on the plunger, and the plunger is also sleeved with a sealing gland that blocks the opening of the sealing sleeve. The cooling mechanism is arranged between the plunger and the sealing gland. The plunger is also sleeved with a rectangular sealing ring, and a skeleton seal is provided between the sealing gland and the plunger. A transition copper ring is added to the contact surface end of the rectangular sealing ring and the sealing gland. Among them, the skeleton seal not only seals the cooling oil in the cooling cavity, but also prevents leaked grease from entering the inner cavity of the sealing gland. At the same time, it cooperates with the rectangular sealing ring and the transition copper ring to prevent the grease from leaking out, thereby achieving a better sealing effect.

[0005] That is to say, the above-mentioned homogenizer sealing and cooling device also uses a rectangular sealing ring to achieve sliding sealing of the plunger, but it must use multiple rectangular sealing rings in superposition, and it also needs to be installed in the sealing sleeve with a skeleton seal and a transition copper ring to prevent the grease from leaking out and play a better sealing role. However, its structure is extremely complex, and the number of parts is large, making it inconvenient to install.

[0006] In view of this, the inventors propose the following technical solutions. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-pressure seal for a homogenizer.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: the high-pressure seal of the homogenizer consists of two parts: a pan-seal and a gasket; the pan-seal includes a pan-seal body and a beveled coil spring embedded in the annular groove at the upper end of the pan-seal body, and the inner side of the upper end of the pan-seal body is formed with a plurality of inner lips distributed longitudinally at intervals, and the outer side of the upper end of the pan-seal body is formed with a plurality of outer lips distributed longitudinally at intervals, and the inner lip body and the outer lip body are distributed on the inner and outer parts of the beveled coil spring; the gasket is cylindrical and connected to the lower end of the pan-seal.

[0009] Furthermore, in the above technical solution, the annular groove has a shape with a large interior and a small opening, and the opening size of the annular groove is smaller than the size of the canted coil spring.

[0010] Furthermore, in the above technical solution, both side walls of the inner wall of the annular groove are configured as arc-shaped inner walls adapted to the surface of the helical coil spring.

[0011] Furthermore, in the above technical solution, the bottom surface of the annular groove is set to be a plane, and the lower end of the arc-shaped inner wall is connected to the plane through a small arc surface.

[0012] Furthermore, in the above technical solution, the bevel coil spring is annular, and is composed of a plurality of obliquely distributed bevel coils, and the heads and tails of two adjacent bevel coils are integrally connected.

[0013] Furthermore, in the above technical solution, the Panseal body has a first axial hole for the plunger to pass through; the inner lip body is distributed on the inner wall of the first axial hole and contacts the outer surface of the plunger, and the interference fit between the inner lip body and the first axial hole decreases gradually from top to bottom.

[0014] Furthermore, in the above technical solution, the pan-seal and gasket are installed in the groove of the cylinder body, and a pressure plate is provided at the groove opening of the cylinder body, which presses on the lower end face of the gasket; the outer lip body contacts the inner wall of the groove, and the interference fit between the outer lip body and the groove decreases gradually from top to bottom.

[0015] Furthermore, in the above technical solution, the gasket is made of PEEK material; and the panseal body is made of ultra-high molecular polyethylene.

[0016] Furthermore, in the above technical solution, the washer has a second axial hole, the second axial hole is connected to the first axial hole, and the aperture of the second axial hole is smaller than the aperture of the first axial hole.

[0017] Furthermore, in the above technical solution, an outer guide bevel is provided on the periphery of the upper end of the Pan-Seal body, and an inner guide bevel is provided at the opening of the upper end of the first shaft hole of the Pan-Seal body.

[0018] By adopting the above technical solution, the present invention has the following advantages compared to the prior art: the Pan-Seal and gasket in the present invention are sequentially installed in the groove of the cylinder body. After the Pan-Seal body is sleeved around the periphery of the plunger, the beveled coil spring provides an elastic support force from the outside to the inside on the inner lip of the Pan-Seal body, causing the outer lip of the Pan-Seal body to tightly press against the inner wall of the groove of the cylinder body, thereby ensuring that the inner lip closely adheres to the outer surface of the plunger. The multiple inner lips are longitudinally spaced apart, thereby ensuring maximum or complete contact and compression with the outer surface of the plunger, ensuring that the sealing performance of the present invention is extremely high under normal and low pressure conditions. Even under high pressure, the multiple inner and outer lips simultaneously bear pressure and, thanks to the elastic support force provided by the beveled coil spring, the Pan-Seal body still maintains an excellent sealing effect. In addition, the gasket added to the present invention can, to a certain extent, narrow the gap between the groove of the present invention and the cylinder body. The gasket is cylindrical and has a high length (height). On the one hand, it is not easy to deform. On the other hand, it can also serve as a guide element to realize the guiding function when the plunger is running. It can assist the Panseal in bearing pressure, which not only becomes the key to the present invention's ability to withstand MPa or higher pressure, but also can directly realize the guiding function, so that the present invention does not need to set up additional guide elements, saving a lot of space and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the utility model;

[0020] Figure 2 This is a cross-sectional view of the pan-seal body of the utility model;

[0021] Figure 3 This is an assembly drawing of the utility model with the cylinder body and the plunger;

[0022] Figure 4 It is a three-dimensional diagram of the helical coil spring in the utility model. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0024] See Figure 1-4 As shown, a high-pressure seal for a homogenizer is composed of two parts: a universal seal 1 and a gasket 2. When in use, the universal seal 1 and the gasket 2 are sequentially installed in the groove 41 of the cylinder body 4 and are sleeved around the outer periphery of the movable plunger 3 in the cylinder body 4 to achieve sealing of the plunger 3.

[0025] Specifically, the Pan-Seal 1 includes a Pan-Seal body 11 and a beveled coil spring 12 embedded in a ring groove 111 at the upper end of the Pan-Seal body 11. The inner side of the upper end of the Pan-Seal body 11 is formed with a plurality of inner lips 112 distributed longitudinally at intervals, and the outer side of the upper end of the Pan-Seal body 11 is formed with a plurality of outer lips 113 distributed longitudinally at intervals. The inner lips 112 and the outer lips 113 are distributed on the inner and outer parts of the beveled coil spring 12; the gasket 2 is cylindrical and connected to the lower end of the Pan-Seal 1. The Pan-Seal 1 and gasket 2 are sequentially installed in the groove 41 of the cylinder body 4. After the Pan-Seal body 11 is sleeved around the periphery of the plunger 3, the canted coil spring 12 provides an elastic support force from the outside to the inside on the inner lip 112 of the Pan-Seal body 11, causing the outer lip 113 of the Pan-Seal body 11 to tightly press against the inner wall of the groove 41 of the cylinder body 4, thereby ensuring that the inner lip 112 is tightly attached to the outer surface of the plunger 3. The multiple inner lips 112 are longitudinally spaced apart, thereby ensuring maximum or complete contact and compression with the outer surface of the plunger 3, ensuring that the sealing performance of the present invention is extremely high under normal and low pressures. Even under high pressure, the multiple inner lips 112 and the multiple outer lips 113 are simultaneously under pressure and, thanks to the elastic support force provided by the canted coil spring 12, the Pan-Seal body 11 still maintains an excellent sealing effect. In addition, the gasket 2 added to the present invention can, to a certain extent, narrow the gap between the groove of the present invention and the cylinder body 4. The gasket 2 is cylindrical and has a high length (height). On the one hand, it is not easy to deform. On the other hand, it can also serve as a guide element to realize the guiding function when the plunger is running. It can assist the pan-seal 1 in bearing pressure, which not only becomes the key for the present invention to withstand a pressure of 100 MPa or higher, but also can directly realize the guiding function, so that the present invention does not need to set up additional guide elements, thereby saving a lot of space and cost.

[0026] The wall thickness of the panseal body 11 is slightly smaller than the depth of the groove so that the plunger will not be stuck when running, especially under normal or low pressure, but not too small to better withstand high pressure.

[0027] The Panseal body 11 is made of ultra-high molecular weight polyethylene (UHMWPE). Ultra-high molecular weight polyethylene is a polyethylene material with extremely high molecular weight, excellent wear resistance, impact resistance and chemical stability, and can achieve good results and a long life when used in the sealing industry.

[0028] The annular groove 111 is shaped with a large interior and a small opening. The opening size of the annular groove 111 is smaller than the size of the bevel coil spring 12, thereby ensuring that after the bevel coil spring 12 is installed in the annular groove 111, the structure is extremely stable and the bevel coil spring 12 is not easy to fall off relative to the annular groove 111, thereby ensuring the quality of the Pan-Seal 1 and making the Pan-Seal 1 extremely competitive in the market.

[0029] The inner side walls of the annular groove 111 are configured as arc-shaped inner walls 101 adapted to the surface of the canted coil spring 12, so that the inner wall of the annular groove 111 can fit well when the canted coil spring 12 is in the initial state and the compressed state, and can transmit the elastic force of the canted coil spring 12 within a suitable range no matter how large the actual compression amount of the canted coil spring 12 is.

[0030] The bottom surface of the annular groove 111 is set as a plane 102, and the lower end of the arc-shaped inner wall 101 is connected to the plane 102 through a small arc surface 103, so as to reduce the easy tearing phenomenon caused by stress concentration and ensure the quality and service life of the pan-seal body 11.

[0031] The bevel coil spring 12 is annular in shape and comprises a plurality of obliquely distributed bevel coils, with the heads and tails of two adjacent bevel coils integrally connected, which can provide uniform and stable elastic support force to the inner lip 112 and the outer lip 113 .

[0032] The pan-seal body 11 has a first axial hole 114 for the plunger 3 to pass through. The inner lip 112 is located on the inner wall of the first axial hole 114 and contacts the outer surface of the plunger 3. The interference fit between the inner lip 112 and the first axial hole 114 decreases gradually from top to bottom. The pan-seal 1 and gasket 2 are installed in the groove 41 of the cylinder body 4. A pressure plate 5 is provided at the opening of the groove 41 of the cylinder body 4, pressing against the lower end surface of the gasket 2. The outer lip 113 contacts the inner wall of the groove 41, and the interference fit between the outer lip 113 and the groove 41 decreases gradually from top to bottom.

[0033] The interference fit between the inner lip 112 and the first axial hole 114 decreases gradually from top to bottom, and the interference fit between the outer lip 113 and the groove 41 also decreases gradually from top to bottom. As a result, when the present invention is under high pressure, the multiple inner lips 112 and multiple outer lips 113 simultaneously bear pressure, and the pressure decreases layer by layer. Even under high pressure, the Panseal 1 maintains a good sealing effect.

[0034] An outer guide bevel 104 is provided on the periphery of the upper end of the Pan-Seal body 11, and an inner guide bevel 105 is provided at the upper opening of the first axial hole 114 of the Pan-Seal body 11. The outer guide bevel 104 and the inner guide bevel 105 facilitate installation during the installation process, and can increase the wedge angle at the outer lip 113 and the inner lip 112, thereby increasing the wear resistance of the seal.

[0035] The gasket 2 is made of PEEK (polyetheretherketone), a specialty engineering plastic with excellent properties such as high-temperature resistance, self-lubrication, easy processing, and high mechanical strength. It can be manufactured into various mechanical parts, such as automotive gears, oil screens, shift plates, aircraft engine parts, automatic washing machine rotors, and medical device components. The gasket 2 has a second axial hole 21 that mates with the first axial hole 114 and has a smaller diameter than the first axial hole 114.

[0036] In summary, the Pan-Seal 1 and gasket 2 of the present invention are sequentially installed in the groove 41 of the cylinder body 4. After the Pan-Seal body 11 is sleeved around the periphery of the plunger 3, the canted coil spring 12 provides an elastic support force from the outside to the inside on the inner lip 112 of the Pan-Seal body 11, causing the outer lip 113 of the Pan-Seal body 11 to tightly press against the inner wall of the groove 41 of the cylinder body 4, thereby ensuring that the inner lip 112 is tightly attached to the outer surface of the plunger 3. The multiple inner lips 112 are longitudinally spaced apart, thereby ensuring maximum or complete contact and compression with the outer surface of the plunger 3, ensuring that the sealing performance of the present invention is extremely high under normal and low pressures. Even under high pressure, the multiple inner lips 112 and the multiple outer lips 113 are simultaneously under pressure and, thanks to the elastic support force provided by the canted coil spring 12, the Pan-Seal body 11 still maintains an excellent sealing effect. In addition, the gasket 2 added to the present invention can, to a certain extent, narrow the gap between the groove of the present invention and the cylinder body 4. The gasket 2 is cylindrical and has a high length (height). On the one hand, it is not easy to deform. On the other hand, it can also serve as a guide element to realize the guiding function when the plunger is running. It can assist the pan-seal 1 in bearing pressure, which not only becomes the key for the present invention to withstand a pressure of 100 MPa or higher, but also can directly realize the guiding function, so that the present invention does not need to set up additional guide elements, thereby saving a lot of space and cost.

[0037] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. Homogenizer high pressure seal, characterized by: It consists of two parts: a pan-seal (1) and a gasket (2); the pan-seal (1) includes a pan-seal body (11) and a bevel spring (12) embedded in a ring groove (111) at the upper end of the pan-seal body (11); the inner side of the upper end of the pan-seal body (11) is formed with a plurality of inner lips (112) distributed longitudinally at intervals; the outer side of the upper end of the pan-seal body (11) is formed with a plurality of outer lips (113) distributed longitudinally at intervals; the inner lips (112) and the outer lips (113) are distributed on the inner and outer parts of the bevel spring (12); the gasket (2) is cylindrical and connected to the lower end of the pan-seal (1).

2. The homogenizer high pressure seal according to claim 1, characterized in that: The annular groove (111) is shaped with a large interior and a small opening, and the opening size of the annular groove (111) is smaller than the size of the canted coil spring (12).

3. The homogenizer high pressure seal according to claim 2, characterized in that: Both side walls of the inner wall of the annular groove (111) are configured as arc-shaped inner walls (101) adapted to the surface of the canted coil spring (12).

4. The homogenizer high pressure seal according to claim 3, characterized in that: The bottom surface of the annular groove (111) is set as a plane (102), and the lower end of the arc-shaped inner wall (101) is connected to the plane (102) via a small arc surface (103).

5. The homogenizer high pressure seal according to claim 1, characterized in that: The bevel coil spring (12) is annular and comprises a plurality of obliquely distributed bevel coils, with the heads and tails of two adjacent bevel coils being integrally connected.

6. The homogenizer high pressure seal according to any one of claims 1 to 5, characterized in that: The pan-seal body (11) has a first axial hole (114) for the plunger (3) to pass through; the inner lip (112) is distributed on the inner wall of the first axial hole (114) and contacts the outer surface of the plunger (3), and the interference between the inner lip (112) and the first axial hole (114) decreases gradually from top to bottom.

7. The homogenizer high pressure seal according to claim 6, characterized in that: The pan-seal (1) and the gasket (2) are installed in the groove (41) of the cylinder body (4), and a pressure plate (5) is provided at the opening of the groove (41) of the cylinder body (4), and the pressure plate (5) is pressed on the lower end surface of the gasket (2); the outer lip body (113) contacts the inner wall of the groove (41), and the interference between the outer lip body (113) and the groove (41) decreases gradually from top to bottom.

8. The homogenizer high pressure seal according to any one of claims 1 to 5, characterized in that: The gasket (2) is made of PEEK material; the panseal body (11) is made of ultra-high molecular polyethylene.

9. The homogenizer high-pressure seal according to claim 6, characterized in that: The washer (2) has a second axial hole (21), the second axial hole (21) is butted against the first axial hole (114), and the aperture of the second axial hole (21) is smaller than the aperture of the first axial hole (114).

10. The homogenizer high-pressure seal according to claim 6, characterized in that: An outer guide bevel (104) is provided on the periphery of the upper end of the Pan-Seal body (11), and an inner guide bevel (105) is provided at the upper end opening of the first shaft hole (114) of the Pan-Seal body (11).

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