Multi-condition adaptive cleaning bearing and valve

Abstract

The present application relates to a kind of multi-working condition self-adapting cleaning bearing and valve.The present application includes the bearing body with annular cross section, the bearing body includes center hole, inner groove and outer groove are distributed along the center axis of bearing body axially on the bearing body, the inner groove is communicated with the inner wall of the center hole, the outer groove is communicated with the outer surface of the bearing body;Wherein, when the deformation of bearing body occurs, the deformation of bearing body is compensated by the expansion or shrinkage of inner groove and outer groove.The present application can meet the use under high, low temperature and other temperature abnormal conditions, appropriately play a self-cleaning role when dustproof measure fails, can produce self-lubrication, reduce the friction coefficient in its movement process, prolong the service life of bearing component, wide applicability, can be used as replacement under most working conditions, convenient spare library replacement.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and in particular to a multi-condition adaptive cleaning bearing and valve. Background Technology

[0002] Currently, due to the transformation and upgrading of the national equipment manufacturing industry and the continuous increase in national investment in fields such as oil and gas, petrochemicals, environmental protection, power, and metallurgy, the valve industry as a whole is showing a good growth trend. Among them, bearings, as internal components of the valve body, play a crucial role in the normal operation of the valve by providing support, rolling, and dust prevention. Due to environmental factors (operating conditions), bearing performance deteriorates under abnormal temperature conditions such as high and low temperatures, and in severe cases, it may lead to bearing failure. Summary of the Invention

[0003] Therefore, the present invention provides a multi-condition adaptive cleaning bearing, which can adapt to multiple environments (conditions).

[0004] To solve the above technical problems, the present invention provides a multi-condition adaptive cleaning bearing, including a bearing body with an annular cross-section. The bearing body includes a central hole, and the bearing body is provided with an inner groove and an outer groove distributed along the central axis of the bearing body. The inner groove communicates with the inner wall of the central hole, and the outer groove communicates with the outer surface of the bearing body.

[0005] When the bearing body deforms, the deformation is compensated by the expansion or contraction of the inner and outer grooves.

[0006] In one embodiment of the present invention, both the inner groove and the outer groove are uniformly distributed circumferentially along the axis of the central hole.

[0007] In one embodiment of the present invention, the inner groove includes a first short groove and a first long groove communicating with the first groove, and the outer groove includes a second short groove and a second long groove communicating with the second short groove.

[0008] In one embodiment of the present invention, the first short groove and the second short groove are circular in shape, and the first long groove and the second long groove are rectangular in shape, with the center line of symmetry of the rectangular structure passing through the circular structure.

[0009] In one embodiment of the present invention, the distance between the circle containing the center of each of the plurality of first short grooves and the circle containing the inner wall of the central hole is 1 / 3 of the distance between the outer circle of the bearing body and the circle containing the inner wall of the central hole, the distance between the circle containing the center of each of the plurality of second short grooves and the circle containing the inner wall of the central hole is 2 / 3 of the distance between the outer circle of the bearing body and the circle containing the inner wall of the central hole, the end of each of the plurality of first long grooves is connected to the central hole, and the end of each of the plurality of second long grooves is connected to the outer surface of the bearing body.

[0010] In one embodiment of the present invention, the diameter of the first short groove is 0.5-1 mm, and the diameter of the second short groove is 0.5-1 mm.

[0011] In one embodiment of the present invention, the width of the first long groove is 0.2-0.5 mm, and the width of the second long groove is 0.2-0.5 mm.

[0012] In one embodiment of the present invention, the first long groove and the adjacent second long groove are arranged at an angle of 7-15°.

[0013] In one embodiment of the present invention, the bearing body is made of austenitic stainless steel (surface hardened) or copper or cobalt-based alloy.

[0014] The present invention also provides a valve, including the aforementioned multi-condition adaptive cleaning bearing, and further comprising: a valve body, packing, a valve stem, a packing gland, a packing pressure plate, and a dividing ring. The bearing is connected to the inner cavity of the valve body through the packing, the valve stem is rotatably connected to the bearing, the packing is pressed into the inner cavity of the valve body through the packing gland, the packing pressure plate is connected to the valve body, and the dividing ring is disposed between the packing pressure plate and the packing gland. When the valve stem rotates within the bearing, impurities can enter the first long groove between the valve stem and the bearing body, and lubricating grease is injected through the first short groove and filled into the space between the valve stem and the bearing body through the first long groove.

[0015] The technical solution of the present invention has the following advantages compared with the prior art:

[0016] This invention discloses a multi-condition adaptive cleaning bearing and valve. The bearing can meet the needs of use under all normal operating conditions. Under high or low temperature conditions, the bearing body deforms, but through the expansion or contraction of the inner and outer grooves, the valve stem that mates with the bearing can still provide effective support without seizing. At the same time, when the valve's dustproof measures fail and small impurities enter between the bearing and the valve stem, rotation can remove the impurities into the first long groove between the valve stem and the bearing body, ensuring that the bearing and valve stem do not seize. A small amount of lubricating grease can be pre-injected into the inner groove. The lubricating grease is injected through the first short groove and filled between the valve stem and the bearing body through the first long groove, which reduces the coefficient of friction of the valve stem during rotation and extends the service life of the bearing.

[0017] In this invention, at high temperatures, the bearing body expands as a whole due to the high temperature. During expansion, the width of the first long groove increases and the width of the second long groove decreases. At low temperatures, the bearing body contracts as a whole due to the low temperature. During contraction, the width of the first long groove decreases and the width of the second long groove increases, thereby compensating for the deformation of the bearing body.

[0018] The special structural parameters of the inner and outer grooves determined by the design and analysis of this invention can ensure the uniformity of the load on the bearing when the valve stem rotates, and can minimize the stress, strain and displacement of the bearing structure, thereby improving the bearing capacity. It can also ensure that the expansion or contraction displacement of the inner and outer grooves is within a reasonable range under high or low temperature conditions, thus meeting the needs of various valve applications. Attached Figure Description

[0019] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a three-dimensional view of the multi-condition adaptive cleaning bearing of the present invention.

[0021] Figure 2 This is a side view of the multi-condition adaptive cleaning bearing of the present invention.

[0022] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0023] Figure 4 yes Figure 2 A magnified view of a portion of point B in the middle.

[0024] Figure 5 This is a schematic diagram of the valve structure of the present invention.

[0025] Explanation of reference numerals in the accompanying drawings: 1. Bearing body; 11. Center hole; 12. Inner groove; 121. First short groove; 122. First long groove; 13. Outer groove; 131. Second short groove; 132. Second long groove; 2. Valve body; 3. Packing; 4. Valve stem; 5. Packing gland; 6. Packing pressure plate; 7. Dividing ring. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0027] Reference Figures 1 to 4 As shown, a multi-condition adaptive cleaning bearing of the present invention includes a bearing body 1 with an annular cross-section. The bearing body 1 includes a central hole 11. The bearing body 1 is provided with an inner groove 12 and an outer groove 13 distributed along the central axis of the bearing body 1. The inner groove 12 communicates with the inner wall of the central hole 11, and the outer groove 13 communicates with the outer surface of the bearing body 1.

[0028] When the bearing body 1 deforms, the deformation of the bearing body 1 is compensated by the expansion or contraction of the inner groove 12 and the outer groove 13.

[0029] In this invention, when the bearing body 1 deforms, the deformation of the bearing body 1 is compensated by the expansion or contraction of the inner groove 12 and the outer groove 13. The deformation is caused by the change in the vibration amplitude of particles when the temperature changes. When the temperature rises, the vibration amplitude of the particles increases, causing the object to expand; when the temperature drops, the vibration amplitude of the particles decreases, causing the object to contract. Whether it deforms depends on the temperature rather than the external force. The volume of the object will change when it deforms.

[0030] Specifically, the inner groove 12 and the outer groove 13 are both evenly distributed circumferentially along the axis of the central hole 11.

[0031] Specifically, the inner groove 12 includes a first short groove 121 and a first long groove 122 communicating with the first groove, and the outer groove 13 includes a second short groove 131 and a second long groove 132 communicating with the second short groove 131.

[0032] Specifically, the first short groove 121 and the second short groove 131 are circular in shape, and the first long groove 122 and the second long groove 132 are rectangular in shape, with the center line of symmetry of the rectangular structure passing through the circular structure.

[0033] More specifically, such as Figure 2As shown, the distance between the circle A1 where the center of each of the plurality of first short grooves 121 is located and the circle A3 where the inner wall of the central hole 11 is located is 1 / 3 of the distance between the outer circle A4 of the bearing body 1 and the circle A3 where the inner wall of the central hole 11 is located. The distance between the circle A2 where the center of each of the plurality of second short grooves 131 is located and the circle A3 where the inner wall of the central hole 11 is located is 2 / 3 of the distance between the outer circle A4 of the bearing body 1 and the circle A3 where the inner wall of the central hole 11 is located. The ends of each of the plurality of first long grooves 122 are connected to the central hole 11, and the ends of each of the plurality of second long grooves 132 are connected to the outer surface of the bearing body 1.

[0034] Specifically, the diameter D1 of the first short groove 121 is 0.5-1 mm, and the diameter D2 of the second short groove 131 is 0.5-1 mm.

[0035] Specifically, the width d1 of the first long groove 122 is 0.2-0.5mm, and the width d2 of the second long groove 132 is 0.2-0.5mm.

[0036] Specifically, the angle α between the first long groove 122 and the adjacent second long groove 132 is set at 7-15°.

[0037] The special structural parameters of the inner groove 12 and the outer groove 13 determined by the present invention after design and analysis can ensure the uniformity of the load on the bearing when the valve stem 4 rotates, and can minimize the stress, strain and displacement of the bearing structure, thereby improving the bearing capacity. It can also ensure that the expansion or contraction displacement of the inner groove 12 and the outer groove 13 is within a reasonable range under high or low temperature conditions, which can meet the needs of various valve applications.

[0038] Specifically, the bearing body 1 is made of austenitic stainless steel (surface hardened) or copper or cobalt-based alloy, and the axial length of the bearing body is 0.75-1.5 times the diameter of the central hole 11. When the temperature is 300 degrees Celsius, the bearing body 1 expands as a whole due to the high temperature. During expansion, the width of the first long groove 122 increases, and the width of the second long groove 132 decreases. When the temperature is below -46 degrees Celsius, the bearing body 1 contracts as a whole due to the low temperature. During contraction, the width of the first long groove 122 decreases, and the width of the second long groove 132 increases, thereby compensating for the deformation of the bearing body 1.

[0039] The adaptive characteristics allow the bearing to adapt to various temperature conditions. When the temperature range is below -46 degrees Celsius and above 300 degrees Celsius, the deformation of the body is compensated by the expansion and contraction of the inner groove 12 and the outer groove 13. When the temperature range is between -46 degrees Celsius and 300 degrees Celsius, no significant deformation occurs.

[0040] like Figure 5As shown, when the above-mentioned bearing is used in a valve, the valve includes a valve body 2, packing 3, valve stem 4, packing gland 5, packing pressure plate 6, and dividing ring 7. The bearing is connected to the inner cavity of the valve body 2 through the packing 3. The valve stem 4 is rotatably connected to the bearing. The packing 3 is pressed into the inner cavity of the valve body 2 through the packing gland 5. The packing pressure plate 6 is connected to the valve body 2. The dividing ring 7 is disposed between the packing pressure plate 6 and the packing gland 5. When the valve stem 4 rotates in the bearing, impurities can enter the first long groove 122 between the valve stem 4 and the bearing body 1. Lubricating grease is injected through the first short groove 121 and filled into the space between the valve stem 4 and the bearing body 1 through the first long groove 122.

[0041] When the valve stem rotates inside the bearing, impurities can enter the first long groove between the valve stem and the bearing body, cleaning all contact surfaces between the valve stem and the bearing body. This allows for better cleaning of the valve stem. At the same time, the squeezing force generated by the impurities entering the first long groove will squeeze the grease in the first short groove into the space between the bearing and the valve stem, improving lubrication performance while also removing more impurities. This achieves the basic functions of a bearing while also taking into account self-adaptation and cleaning effects.

[0042] In use, the bearing of this invention is installed in the inner cavity of the valve body 2 of the valve, and components such as packing 3, valve stem 4, packing gland 5, packing pressure plate 6, and dividing ring 7 are installed. During the rotation of the valve stem 4, the bearing body 1 will deform under high or low temperature conditions. Through the expansion or contraction of the inner groove 12 and the outer groove 13, the valve stem 4 that cooperates with the bearing can still provide effective support without seizing. At the same time, when the valve dust prevention measures fail and small impurities enter between the bearing and the valve stem 4, the impurities can be removed into the first long groove 122 between the valve stem 4 and the bearing body 1 by rotation, ensuring that the bearing and the valve stem 4 do not seize. A small amount of lubricating grease can be injected into the inner groove 12 in advance. The lubricating grease is injected through the first short groove 121 and filled into the space between the valve stem 4 and the bearing body 1 through the first long groove 122, which reduces the coefficient of friction of the valve stem 4 during rotation and extends the service life of the bearing.

[0043] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-condition adaptive cleaning bearing, characterized in that, The bearing body (1) includes a ring-shaped cross-section. The bearing body (1) includes a central hole (11). The bearing body (1) is provided with an inner groove (12) and an outer groove (13) distributed along the central axis of the bearing body (1). The inner groove (12) communicates with the inner wall of the central hole (11), and the outer groove (13) communicates with the outer surface of the bearing body (1). When the bearing body (1) deforms, the deformation of the bearing body (1) is compensated by the expansion or contraction of the inner groove (12) and the outer groove (13). The inner groove (12) and the outer groove (13) are both evenly distributed circumferentially along the axis of the central hole (11); The inner groove (12) includes a first short groove (121) and a first long groove (122) communicating with the first groove, and the outer groove (13) includes a second short groove (131) and a second long groove (132) communicating with the second short groove (131). The first short groove (121) and the second short groove (131) are circular in shape, and the first long groove (122) and the second long groove (132) are rectangular in shape. The center line of the symmetry of the rectangular structure passes through the circular structure, and lubricating grease is injected into the first short groove (121). When the bearing body (1) expands as a whole under high temperature, the width of the first long groove (122) increases and the width of the second long groove (132) decreases. When the bearing body (1) contracts as a whole under low temperature, the width of the first long groove (122) decreases and the width of the second long groove (132) increases.

2. The multi-condition adaptive cleaning bearing according to claim 1, characterized in that, The distance between the circle containing the center of each of the multiple first short grooves (121) and the circle containing the inner wall of the central hole (11) is 1 / 3 of the distance between the outer circle of the bearing body (1) and the circle containing the inner wall of the central hole (11). The distance between the circle containing the center of each of the multiple second short grooves (131) and the circle containing the inner wall of the central hole (11) is 2 / 3 of the distance between the outer circle of the bearing body (1) and the circle containing the inner wall of the central hole (11). The ends of each of the multiple first long grooves (122) are connected to the central hole (11), and the ends of each of the multiple second long grooves (132) are connected to the outer surface of the bearing body (1).

3. The multi-condition adaptive cleaning bearing according to claim 1, characterized in that, The diameter of the first short groove (121) is 0.5-1 mm, and the diameter of the second short groove (131) is 0.5-1 mm.

4. The multi-condition adaptive cleaning bearing according to claim 1, characterized in that, The width of the first long groove (122) is 0.2-0.5 mm, and the width of the second long groove (132) is 0.2-0.5 mm.

5. A multi-condition adaptive cleaning bearing according to claim 1, characterized in that, The first long slot (122) and the adjacent second long slot (132) are set at an angle of 7-15°.

6. The multi-condition adaptive cleaning bearing according to claim 1, characterized in that, The bearing body (1) is made of austenitic stainless steel, copper, or cobalt-based alloy.

7. A valve, characterized in that, The multi-condition adaptive cleaning bearing according to any one of claims 1-6 further includes: a valve body (2), packing (3), valve stem (4), packing gland (5), packing pressure plate (6), and dividing ring (7). The bearing is connected to the inner cavity of the valve body (2) through the packing (3). The valve stem (4) is rotatably connected to the bearing. The packing (3) is pressed into the inner cavity of the valve body (2) through the packing gland (5). The packing pressure plate (6) is connected to the valve body (2). The dividing ring (7) is disposed between the packing pressure plate (6) and the packing gland (5). When the valve stem (4) rotates in the bearing, impurities can enter the first long groove (122) between the valve stem (4) and the bearing body (1). Lubricating grease is injected through the first short groove (121) and filled into the space between the valve stem (4) and the bearing body (1) through the first long groove (122).

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