Polishing and grinding device for stop valve production

Abstract

The utility model relates to the technical field of stop valve, the utility model provides a kind of polishing and grinding device for stop valve production, including bottom plate, the bottom plate top end is fixedly connected with guide rail, the moving assembly is installed in fixed box right end, the sliding assembly is installed in guide rail inside, the positioning assembly is installed in sliding block right end.The utility model provides a kind of polishing and grinding device for stop valve production, screw nut drives sliding box to slide in guide rail inside, positioning assembly contacts after stop valve, and sliding block is relatively left to sliding box, and sliding block makes connecting rod relatively left by connecting plate, and connecting rod drives piston to move in sleeve inside, and air in sleeve inside left side is compressed by piston to generate opposite force, because the uneven surface of stop valve makes the air in different positions and spring rebound force different, so that the pressure of different positioning assembly is different, solve the technical problem that valve door fixed effect is poor in prior art due to uneven surface of stop valve.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically to a polishing and grinding device for gate valve production. Background Technology

[0002] A gate valve, also known as a stop valve, is a forced-seal valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to ensure a leak-proof seal. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the frictional force of the valve stem and packing, plus the thrust generated by the pressure of the medium. The force required to close the valve is greater than the force required to open it, so the valve stem diameter must be larger; otherwise, the valve stem may bend. Gate valves are classified into three types according to their connection method: flange connection, threaded connection, and welded connection. Since the advent of self-sealing valves, the medium flow direction in gate valves has changed to entering the valve cavity from above the valve disc. In this case, under the action of medium pressure, the force required to close the valve is smaller, while the force required to open it is larger, allowing for a corresponding reduction in the valve stem diameter.

[0003] Existing gate valve polishing and grinding equipment is a specialized device used to grind and polish the surfaces of key components such as the valve core, valve seat, and valve body of gate valves to improve their sealing performance, surface smoothness, and corrosion resistance. However, when fixing gate valves, the uneven surface makes manual fixing by workers a labor-intensive task. Furthermore, equipment cannot be used to fix valves of different sizes and shapes, resulting in poor practicality. Utility Model Content

[0004] To overcome the above-mentioned defects, embodiments of this utility model provide a polishing and grinding device for the production of gate valves, which solves the technical problem of poor valve fixing effect caused by uneven surface of gate valves in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a polishing and grinding device for the production of stop valves, comprising: a base plate, a support column fixedly connected to the bottom end of the base plate, a fixed box fixedly connected to the bottom end of the base plate, and a guide rail fixedly connected to the top end of the base plate; A movable component is installed at the right end of the fixed box, and the movable component is used to provide a power source for the movement of the shut-off valve positioning mechanism; A sliding assembly is installed inside a guide rail, and a sliding block is fixedly connected to the sliding assembly. The sliding assembly is used to drive a positioning mechanism to position the shut-off valve. A positioning component is installed at the right end of the sliding block and is used to position uneven areas on the surface of the shut-off valve.

[0006] For example, in a polishing and grinding device for producing a stop valve provided in at least one embodiment of the present invention, the moving component includes a servo motor, the servo motor is fixedly connected to the right end of the fixed box, the output end of the servo motor extends into the interior of the fixed box and is fixedly installed with a bidirectional lead screw, a limit block is fixedly connected in the middle of the interior of the fixed box, the limit block is rotatably connected to the middle of the bidirectional lead screw through a bearing, a lead screw nut is driven connected to the bidirectional lead screw, and a bellows is fixedly connected inside the fixed box and sleeved on the bidirectional lead screw.

[0007] For example, in a polishing and grinding device for producing a shut-off valve provided in at least one embodiment of the present invention, the sliding assembly includes a sliding box, the sliding box being slidably connected to the inside of a guide rail, an isolation plate being fixedly connected to the top wall of the inner cavity of the sliding box, a guide block being fixedly connected to the front end of the isolation plate, and the guide block and the sliding block being slidably connected.

[0008] For example, in at least one embodiment of the present invention, a polishing and grinding device for producing a stop valve further includes: a sleeve fixedly connected to the left wall of the inner cavity of the sliding box; a piston slidably connected inside the sleeve; a connecting rod fixedly connected to the right end of the piston; the right end of the connecting rod extending to the right side of the sleeve and fixedly connected to a connecting plate; the right end of the connecting plate fixedly connected to the left end of the sliding block; and a spring fixedly connected to the left wall of the inner cavity of the sliding box and sleeved on the sleeve; the right end of the spring fixedly connected to the left end of the sliding block.

[0009] For example, in a polishing and grinding device for producing a stop valve provided in at least one embodiment of the present invention, the positioning component includes a groove, the groove being opened at the right end of the sliding block, a fixing rod being fixedly connected to the bottom wall of the inner cavity of the groove, a stop block being threadedly connected to the top end of the fixing rod, and a positioning block being rotatably connected to the fixing rod via a bearing.

[0010] For example, in a polishing and grinding device for producing a shut-off valve provided in at least one embodiment of the present invention, a positioning component is fixedly installed on the top of the base plate, and a cylinder is fixedly connected to the top of the base plate and located behind the positioning component, and the output end of the cylinder is connected to the positioning mechanism inside the positioning component.

[0011] For example, in a polishing and grinding device for producing a shut-off valve provided in at least one embodiment of the present invention, there are multiple guide rails, sliding components and positioning components, the multiple guide rails, sliding components and positioning components are symmetrical about the longitudinal center line of the base plate, the sliding components and positioning components are arranged along the transverse axis, and the positioning component and the cylinder are arranged along the longitudinal axis.

[0012] For example, in a polishing and grinding device for producing a shut-off valve provided in at least one embodiment of the present invention, the upper end of the lead screw nut extends into the interior of the guide rail and is fixedly connected to the bottom end of the sliding box, and a through groove is provided on the base plate to limit the movement of the lead screw nut.

[0013] The beneficial effects of this utility model are as follows: This is a polishing and grinding device for the production of gate valves. The moving component drives the sliding component to position the gate valve, so that the gas generated by the spring and piston is compressed and can automatically adapt to the surface of the gate valve. It can fix valves of different sizes and shapes and ensure the stability of subsequent polishing and grinding. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a polishing and grinding device for producing a stop valve in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the internal structure of the main view in the embodiment; Figure 3 for Figure 1 A schematic diagram of the driving component in the embodiment; Figure 4 for Figure 1 A schematic diagram of the sliding component in the embodiment; Figure 5 for Figure 4 Enlarged view of point a in the embodiment; Figure 6 for Figure 1 A schematic diagram of the sliding block in the embodiment; Figure 7 for Figure 6 Enlarged view of point b in the embodiment; In the diagram: 1. Base plate; 2. Support column; 3. Fixed box; 4. Moving component; 41. Servo motor; 42. Two-way lead screw; 43. Lead screw nut; 44. Limit block; 45. Bellows; 5. Guide rail; 6. Sliding component; 61. Sliding box; 62. Isolation plate; 63. Guide block; 64. Sleeve; 65. Piston; 66. Connecting rod; 67. Spring; 68. Connecting plate; 7. Sliding block; 8. Positioning component; 9. Positioning component; 91. Groove; 92. Fixed rod; 93. Stop; 94. Positioning block; 10. Cylinder. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0017] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0018] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] like Figures 1 to 7 As shown, it illustrates a polishing and grinding device for producing a stop valve in one embodiment of the present invention, comprising: a base plate 1, a support column 2 fixedly connected to the bottom end of the base plate 1, a fixed box 3 fixedly connected to the bottom end of the base plate 1, and a guide rail 5 fixedly connected to the top end of the base plate 1. The movable component 4 is installed at the right end of the fixed box 3 and is used to provide a power source for the movement of the shut-off valve positioning mechanism. Sliding component 6 is installed inside the guide rail 5. A sliding block 7 is fixedly connected to the sliding component 6. The sliding component 6 is used to drive the positioning mechanism to position the shut-off valve. Positioning component 9 is installed on the right end of sliding block 7. Positioning component 9 is used to position uneven parts of the stop valve surface.

[0023] For example, such as Figure 3 As shown, the moving component 4 includes a servo motor 41, which is fixedly connected to the right end of the fixed box 3. The output end of the servo motor 41 extends into the interior of the fixed box 3 and is fixedly installed with a bidirectional lead screw 42. A limit block 44 is fixedly connected to the middle of the interior of the fixed box 3. The limit block 44 is rotatably connected to the middle of the bidirectional lead screw 42 through a bearing. A lead screw nut 43 is driven and connected to the bidirectional lead screw 42. A bellows 45 is fixedly connected inside the fixed box 3 and sleeved on the bidirectional lead screw 42.

[0024] In some examples, the purpose of the moving component 4 is to drive the positioning component 9 to position the shut-off valve. After the shut-off valve reaches the position, the moving component 4 works, and the PLC controller starts the servo motor 41 to drive the bidirectional lead screw 42. The bidirectional lead screw 42 drives the lead screw nut 43 to move the sliding component 6, thereby causing the sliding component 6 to drive the positioning component 9. The positioning component 9 fixes the position of the shut-off valve. The servo motor 41 is equipped with a high-precision encoder, which can accurately feed back the rotor position, realize precise position control and speed control, and provide a power source for the overall movement of the device.

[0025] For example, such as Figure 5As shown, the sliding assembly 6 includes a sliding box 61, which is slidably connected to the inside of the guide rail 5. An isolation plate 62 is fixedly connected to the top wall of the inner cavity of the sliding box 61. A guide block 63 is fixedly connected to the front end of the isolation plate 62. The guide block 63 and the sliding block 7 are slidably connected. A sleeve 64 is fixedly connected to the left wall of the inner cavity of the sliding box 61. A piston 65 is slidably connected inside the sleeve 64. A connecting rod 66 is fixedly connected to the right end of the piston 65. The right end of the connecting rod 66 extends to the right side of the sleeve 64 and is fixedly connected to a connecting plate 68. The right end of the connecting plate 68 is fixedly connected to the left end of the sliding block 7. A spring 67 is fixedly connected to the left wall of the inner cavity of the sliding box 61 and sleeved on the sleeve 64. The right end of the spring 67 is fixedly connected to the left end of the sliding block 7. The upper end of the lead screw nut 43 extends to the inside of the guide rail 5 and is fixedly connected to the bottom end of the sliding box 61. A through groove is provided on the bottom plate 1 to limit the movement of the lead screw nut 43.

[0026] In some examples, due to the uneven surface of the shut-off valve, the purpose of the sliding assembly 6 is to push the positioning assembly 9 to position the shut-off valve, facilitating the application of pressure to the positioning assembly 9. When the moving assembly 4 is working, the lead screw nut 43 drives the sliding box 61 to slide inside the guide rail 5. After the positioning assembly 9 contacts the shut-off valve, the sliding block 7 moves to the left relative to the sliding box 61. The sliding block 7 causes the connecting rod 66 to move to the left relative to the sliding box 61 through the connecting plate 68. The connecting rod 66 drives the piston 65 to move inside the sleeve 64. The air on the left side inside the sleeve 64 is compressed by the piston 65. At the same time, the relative movement of the sliding box 61 and the sliding block 7 compresses the spring 67. The air and spring 67 are compressed, generating opposing forces. Due to the uneven surface of the shut-off valve, the air and spring 67 have different rebound forces at different positions, resulting in different pressures on different positioning components 9. This ensures that the applied pressure on the positioning component 9 is within a certain range, limits the friction between the positioning component 9 and the shut-off valve, and positions the shut-off valve. The spring 67 is made of 50CrV steel, with vanadium added to refine the steel structure, resulting in high strength and toughness, and good fatigue and impact resistance. The spring 67 can automatically adjust the pressure distribution of the positioning component 9 on the object according to the shape and surface condition of the object, so that the object is subjected to more uniform pressure and thus better fixed.

[0027] For example, such as Figure 7 As shown, the positioning component 9 includes a groove 91, which is located at the right end of the sliding block 7. A fixing rod 92 is fixedly connected to the bottom wall of the inner cavity of the groove 91. A stop block 93 is threadedly connected to the top of the fixing rod 92. A positioning block 94 is rotatably connected to the fixing rod 92 via a bearing.

[0028] In some examples, the purpose of providing the positioning component 9 is to position it to fit the uneven surface of the shut-off valve. The sliding component 6 drives the positioning component 9 to work. After the positioning block 94 contacts the shut-off valve, the pressure applied by the sliding block 7 causes the positioning block 94 to rotate on the fixed rod 92. A rubber plate is provided on the contact surface between the positioning block 94 and the shut-off valve to prevent the positioning block 94 from scratching the shut-off valve, and at the same time increase the friction between the positioning block 94 and the shut-off valve, making it easier to position the positioning plate 94.

[0029] For example, such as Figure 2 As shown, a positioning component 8 is fixedly installed at the top of the base plate 1, and a cylinder 10 is fixedly connected to the top of the base plate 1 and behind the positioning component 8. The output end of the cylinder 10 is connected to the positioning mechanism inside the positioning component 8. There are multiple guide rails 5, sliding components 6 and positioning components 9. The multiple guide rails 5, sliding components 6 and positioning components 9 are symmetrical about the longitudinal center line of the base plate 1. The sliding components 6 and positioning components 9 are arranged along the horizontal axis, and the positioning component 8 and cylinder 10 are arranged along the longitudinal axis.

[0030] In some examples, the positioning element 8 and the cylinder 10 are used to assist in positioning the shut-off valve. When the horizontal axis positioning assembly 9 is unstable, the cylinder 10 drives the positioning element 8 to position the shut-off valve, so that the shut-off valve can be positioned more stably, which is convenient for subsequent polishing and grinding.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A polishing and grinding device for manufacturing stop valves, characterized in that, include: The base plate (1) is fixedly connected to a support column (2) at the bottom end of the base plate (1), and a fixed box (3) is fixedly connected to the bottom end of the base plate (1). The top end of the base plate (1) is fixedly connected to a guide rail (5). The moving component (4) is installed at the right end of the fixed box (3) and is used to provide a power source for the movement of the shut-off valve positioning mechanism; A sliding assembly (6) is installed inside the guide rail (5). A sliding block (7) is fixedly connected to the sliding assembly (6). The sliding assembly (6) is used to drive the positioning mechanism to position the shut-off valve. Positioning component (9) is installed on the right end of sliding block (7) and is used to position uneven parts of the shut-off valve surface.

2. The polishing and grinding device for producing a gate valve according to claim 1, characterized in that, The moving component (4) includes a servo motor (41), which is fixedly connected to the right end of the fixed box (3). The output end of the servo motor (41) extends into the interior of the fixed box (3) and is fixedly installed with a bidirectional lead screw (42). A limit block (44) is fixedly connected in the middle of the interior of the fixed box (3). The limit block (44) is rotatably connected to the middle of the bidirectional lead screw (42) through a bearing. A lead screw nut (43) is driven and connected to the bidirectional lead screw (42). A bellows (45) is fixedly connected inside the fixed box (3) and sleeved on the bidirectional lead screw (42).

3. The polishing and grinding device for producing a stop valve according to claim 2, characterized in that, The sliding assembly (6) includes a sliding box (61), which is slidably connected to the inside of the guide rail (5). An isolation plate (62) is fixedly connected to the top wall of the inner cavity of the sliding box (61), and a guide block (63) is fixedly connected to the front end of the isolation plate (62). The guide block (63) and the sliding block (7) are slidably connected.

4. The polishing and grinding device for producing a stop valve according to claim 3, characterized in that, A sleeve (64) is fixedly connected to the left wall of the inner cavity of the sliding box (61). A piston (65) is slidably connected inside the sleeve (64). A connecting rod (66) is fixedly connected to the right end of the piston (65). The right end of the connecting rod (66) extends to the right side of the sleeve (64) and is fixedly connected to a connecting plate (68). The right end of the connecting plate (68) is fixedly connected to the left end of the sliding block (7). A spring (67) is fixedly connected to the left wall of the inner cavity of the sliding box (61) and sleeved on the sleeve (64). The right end of the spring (67) is fixedly connected to the left end of the sliding block (7).

5. The polishing and grinding device for producing a gate valve according to claim 1, characterized in that, The positioning component (9) includes a groove (91) which is located at the right end of the sliding block (7). A fixing rod (92) is fixedly connected to the bottom wall of the inner cavity of the groove (91). A stop block (93) is threadedly connected to the top of the fixing rod (92). A positioning block (94) is rotatably connected to the fixing rod (92) via a bearing.

6. The polishing and grinding device for producing a gate valve according to claim 1, characterized in that, A positioning component (8) is fixedly installed on the top of the base plate (1). A cylinder (10) is fixedly connected to the top of the base plate (1) and to the rear side of the positioning component (8). The output end of the cylinder (10) is connected to the internal positioning mechanism of the positioning component (8).

7. The polishing and grinding device for producing a gate valve according to claim 6, characterized in that, There are multiple guide rails (5), sliding components (6) and positioning components (9). The multiple guide rails (5), sliding components (6) and positioning components (9) are symmetrical about the longitudinal center line of the base plate (1). The sliding components (6) and positioning components (9) are arranged along the horizontal axis. The positioning component (8) and the cylinder (10) are arranged along the longitudinal axis.

8. The polishing and grinding device for producing a stop valve according to claim 3, characterized in that, The upper end of the lead screw nut (43) extends into the interior of the guide rail (5) and is fixedly connected to the bottom end of the sliding box (61). The base plate (1) has a through groove that limits the movement of the lead screw nut (43).

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