Gap adjusting structure of rotary feeding valve
By introducing the spring -type adjustment mechanism in the rotating to the material valve, the problem of irregular radial gaps in the existing technology is solved, and precise adjustment of the gap is achieved to ensure the protection of sealing performance and mechanical parts.
Patent Information
- Application Number
- CN202421073320.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-17
AI Technical Summary
The radial clearance of the existing rotary feed valve is not adjustable, resulting in larger gaps after long rotation, resulting in gas leakage, or smaller, resulting in wear of the shell and rotary impeller.
Design a rotation valve of the spring -type regulating mechanism, which can ensure that the gap is within a reasonable range through the adjustment of the radial gap through the spring type adjustment mechanism to avoid leakage and wear.
The use of spring -type regulatory mechanisms can easily adjust and control the size of the radial gap, ensure the sealing performance, and avoid gas leakage and mechanical component wear.
Smart Images
Figure CN222409778U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a rotary feeding valve, in particular to a gap adjustment structure of the rotary feeding valve. Background Art
[0002] like Figure 1 As shown: the existing rotary feeding valve mainly includes a main body 1 and a shell 2. A rotating impeller 3 is provided in the working chamber enclosed by the shell. A radial gap 4 is provided between the inner wall of the shell of the valve body and the outer surface of the rotating impeller; a feed port 21 is provided at the top of the shell, a discharge port is provided at the bottom of the shell, and the bottom of the shell is connected to an accelerator 5; the rotating impeller 3 is supported on a bearing seat and connected to a power source, such as a motor, through a shaft. The existing radial gap 4 is usually not adjustable, that is, the shell 2 is fixedly connected to the accelerator 5, and the shell 2 and the rotating impeller 3 are both immovable. However, when the rotating impeller rotates for a long time, it is easy to cause the radial gap to become larger. Once the gap becomes larger, it will cause gas leakage in the working chamber, resulting in poor sealing performance; once the gap becomes smaller, it is easy to cause wear of the inner wall of the shell or the rotating impeller.
[0003] Therefore, the present application urgently needs to design a structure with adjustable gap size to solve the above technical problems. Utility Model Content
[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide a clearance adjustment structure of a rotary feeding valve which is easy to adjust and control.
[0005] The technical solution of the utility model is: a gap adjustment structure of a rotary feeding valve, including a valve body, a rotating impeller is provided in the working chamber of the valve body; a radial gap is formed between the inner wall of the outer shell of the valve body and the outer surface of the rotating impeller, and a spring-type adjustment mechanism for adjusting the radial gap is connected to the outer shell of the valve body.
[0006] Furthermore, the size of the radial gap is 5-15 mm.
[0007] Further preferably, the size of the radial gap is 5-10 mm.
[0008] Furthermore, the valve body includes a main body and a shell arranged in the main body, the shell encloses the working chamber, and the bottom of the shell is movably connected to the accelerator or the base and can move under the adjustment of the spring-type adjustment mechanism.
[0009] Furthermore, the spring-type adjustment mechanism includes a spring and a threaded assembly, and the threaded assembly can drive the housing to move, and the spring expands and contracts during the movement.
[0010] Further preferably, the spring-type adjustment mechanism includes a first spring, a first nut, a screw and a cylinder, the first spring is sleeved on the piston in the cylinder and fixed in the cylinder, the first nut is connected to the screw, the internal thread of the first nut is adapted to the external thread of the screw, and when the first nut is rotated, the screw can move linearly; a head is provided at one end of the screw, and the head extends into the cylinder, which can compress air during the movement to push the piston to move, and the other end of the screw penetrates into the main unit along the surface of the main unit through the connecting plate and is connected to the outer shell, pushing the outer shell to move under the adjustment of the first nut.
[0011] Alternatively, the spring-type adjustment mechanism is a spring nut, comprising a second spring, a second nut and a screw; one end of the screw penetrates into the main unit along the surface of the main unit through a connecting plate and is connected to the outer shell; the second nut is provided on the screw, and the screw can move linearly under the rotation of the second nut; one end of the second spring is connected to the second nut, and the other end is connected to the outer shell, and is sleeved on the screw. By rotating the second nut, the screw produces linear motion, and the second spring expands and contracts to adjust the radial gap to become larger or smaller.
[0012] Furthermore, 5-10 points are set at the nut moving positions of the spring-type adjustment mechanism, and the radial clearance movement is reduced by 0.5-1 mm every time the nut rotates one circle.
[0013] Furthermore, the 5-10 points set at the nut moving position are unevenly distributed points.
[0014] Furthermore, the spring-type regulating mechanism is arranged on one side or both sides close to the feed port of the valve body.
[0015] The beneficial effects of the present invention are as follows: on the one hand, by setting a spring-type adjustment mechanism, the size of the radial gap can be conveniently adjusted and controlled, and multiple unequally distributed points can be set according to the degree of compression of the spring to limit the distance of the radial gap and perform precise adjustment; on the other hand, by arranging the spring-type adjustment mechanism near the feed port of the valve body, it is convenient to save time and effort when driving the shell to move, and this position is not easy to affect the air tightness of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of a rotary feeding valve in the prior art;
[0017] Figure 2 This is a schematic structural diagram of an embodiment of the present utility model;
[0018] Figure 3 for Figure 2 A schematic three-dimensional structural diagram of the spring-type adjustment mechanism of the illustrated embodiment.
[0019] Description of the accompanying drawings:
[0020] 1. Main unit; 2. Casing; 3. Rotating impeller; 4. Radial clearance; 5. Accelerator; 6. Spring-type adjustment mechanism; 21. Feed inlet; 61. First spring; 62. First nut; 63. Screw; 64. Cylinder; 65. Piston; 66. Connecting plate; 631. Head. DETAILED DESCRIPTION
[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0022] like Figure 2 As shown: A gap adjustment structure of a rotary feeding valve includes a valve body, a rotating impeller 3 is provided in the working chamber of the valve body; a radial gap 4 is formed between the inner wall of the outer shell of the valve body and the outer surface of the rotating impeller, and a spring-type adjustment mechanism 6 for adjusting the radial gap is connected to the outer shell 2 of the valve body.
[0023] Specifically, since sealing gas needs to be introduced into the working chamber of the rotary feeding valve, in order to prevent gas leakage from the valve body during operation, this embodiment needs to monitor and control the radial clearance in real time to ensure that the maximum radial clearance does not exceed the target size and to ensure that the leakage is as small as possible. Therefore, by setting a spring-type adjustment mechanism, once the radial clearance of the valve body during operation is larger than the target size, it is necessary to adjust the radial clearance to limit its size. The target size is set to 5-15mm. If the target size is set too large, it is easy to cause leakage. If it is set too small, it is easy to cause wear on the inner wall of the valve body shell or the rotating impeller. The target size of this embodiment is preferably 5-10mm, and more preferably 5mm. For example: when the radial clearance is greater than 5mm, the radial clearance is adjusted to be maintained within 5mm without stopping the rotary feeding valve.
[0024] In this embodiment, the valve body specifically includes a main unit 1 and a housing 2 disposed within the main unit. The housing 2 encloses and forms the working chamber. The top of the housing 2 is provided with an inlet 21, the bottom of the housing 2 is provided with an outlet, and the bottom of the housing 2 is connected to an accelerator 5 or a base. The rotating impeller 3 is supported on a bearing seat and connected to a power source, such as a motor, via a shaft. The bottom of the housing is movably connected to the accelerator or base and can move under the control of a spring-loaded adjustment mechanism. For example, the bottom of the housing and the accelerator or base are connected by a movable pin or a slide rail. A preferred embodiment is to provide a slide groove on the housing or base of the accelerator and a slider on the bottom surface of the housing to achieve a sliding connection.
[0025] In this embodiment, the spring-type adjustment mechanism 6 is preferably connected between the feed port 21 of the valve body and the outer shell 2 to save time and effort when driving the shell to move, and this position is not likely to affect the airtightness of the valve body.
[0026] The reason why the present embodiment selects the adjustment mechanism 6 with a spring is, on the one hand, to improve stability so that the radial gap can remain unchanged after adjustment; on the other hand, the moving point can be selected according to the compression degree of the spring to accurately control the moving distance of the radial gap.
[0027] like Figure 3 As shown in the figure, a preferred spring-type adjustment mechanism of this embodiment has the following structure: the spring-type adjustment mechanism 6 includes a first spring 61, a first nut 62, a screw 63, and a cylinder 64. The first spring 61 is sleeved on a piston 65 in the cylinder and fixed in the cylinder 64. The first nut 62 is connected to the screw 63. The internal thread of the first nut 62 is adapted to the external thread of the screw 63. When the first nut 62 is rotated, the screw 63 can move linearly. One end of the screw 63 is provided with a head 631. The head 631 extends into the cylinder and can compress the air in the cylinder during movement to push the piston 65 to move. The head 631 is preferably designed as a sealing plug, which can be sealed with the chamber of the cylinder 64 to facilitate air compression. The other end of the screw 63 penetrates into the main body 1 along the surface of the main body 1 through a connecting plate 66 and is connected to the housing 2. It can push the housing 2 to move under the adjustment of the first nut 62. The screw and the housing 2 can be fixed by welding or threaded connection. For example, the end of the lead screw connected to the housing is designed to have a beveled surface or an arc surface that matches the housing, so as to increase the contact area for welding with the housing. In this embodiment, the first nut can be rotated manually or with an appropriate tool.
[0028] Specifically, the working principle of the above structure is as follows: rotating the first nut 62 causes the screw 63 to move toward the piston 65 to perform linear motion to compress the air. Under the force of the compressed air, the piston 65 pushes the housing 2 toward the rotating impeller 3, thereby reducing the radial gap 4. The piston 65 is in a compressed state during movement. The function of the first spring 61 is to maintain the position of the piston, that is, to provide a reverse force when the air pressure decreases or is no longer applied to prevent the piston from moving freely. In this way, when the air pressure is no longer applied, the piston will not move freely, maintaining the radial gap unchanged. When the radial gap needs to be increased, the first nut 62 is rotated in the opposite direction, causing the screw 63 to move away from the piston 65. The piston 65, under the action of the first spring 61, drives the housing to move away from the rotating impeller 3, thereby increasing the radial gap 4.
[0029] In this embodiment, rotating the first nut 62 changes the length of the lead screw 63, thereby adjusting the position of the piston 65 and ensuring that the radial clearance 4 remains within a reasonable range. The position of the first nut 62 determines the degree of compression of the first spring 61. The first nut's movement position is preferably set at 5-10 points (non-uniformly distributed). With each rotation of the first nut, the radial clearance decreases by 0.5-1 mm. The first nut in this embodiment is preferably a gear nut with an external gear structure. It can be used in combination with the lead screw to convert rotational motion into linear motion, and is convenient for manual operation.
[0030] Another preferred structure of the spring-type adjustment mechanism in this embodiment is as follows: the spring-type adjustment mechanism is a spring nut, comprising a second spring, a second nut and a screw (or lead screw); one end of the screw is inserted into the main unit along the surface of the main unit through a connecting plate and is connected to the outer shell, such as by welding; the second nut is provided on the screw and is adaptively connected to the screw, and the screw can make a linear motion under the rotation of the second nut, one end of the second spring is connected to the bottom of the second nut, and the other end is connected to the outer shell, and is sleeved on the screw, and by rotating the second nut, the screw produces a linear motion, and the second spring expands and contracts, thereby realizing the enlargement or reduction of the radial gap, and 5-10 points are also preferably set at the moving position of the second nut, the details are the same as above, and no further details are given here.
[0031] To sum up, on the one hand, this embodiment can conveniently adjust and control the size of the radial gap by setting a spring-type adjustment mechanism, and can set multiple unevenly distributed points according to the degree of compression of the spring to limit the distance of the radial gap and perform precise adjustment; on the other hand, by arranging the spring-type adjustment mechanism close to the feed port of the valve body, it is convenient to save time and effort when driving the shell to move, and this position is not easy to affect the air tightness of the valve body.
[0032] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.
Claims
1. A clearance adjustment structure of a rotary feeder valve, comprising a valve body, wherein a rotary impeller is arranged in a working chamber of the valve body; characterized in that: A radial gap is formed between the inner wall of the outer shell of the valve body and the outer surface of the rotating impeller, and a spring-type adjustment mechanism for adjusting the radial gap is connected to the outer shell of the valve body.
2. The gap adjustment structure of the rotary feeding valve according to claim 1 is characterized in that: The size of the radial gap is 5-15 mm.
3. The gap adjustment structure of the rotary feeding valve according to claim 2 is characterized in that: The size of the radial gap is 5-10 mm.
4. The gap adjustment structure of the rotary feeding valve according to claim 1, characterized in that: The valve body comprises a main body and a shell arranged in the main body, the shell encloses the working chamber, the bottom of the shell is movably connected to the accelerator or the base, and can move under the adjustment of the spring-type adjustment mechanism.
5. The gap adjustment structure of the rotary feeder valve according to claim 4, characterized in that: The spring type adjustment mechanism comprises a spring and a threaded component. The threaded component can drive the housing to move, and the spring expands and contracts during the movement.
6. The gap adjustment structure of the rotary feeder valve according to claim 5, characterized in that: The spring-type adjustment mechanism includes a first spring, a first nut, a lead screw and a cylinder. The first spring is sleeved on a piston in the cylinder and fixed in the cylinder. The first nut is connected to the lead screw. The internal thread of the first nut is matched with the external thread of the lead screw. When the first nut is rotated, the lead screw can move in a straight line. A head is provided at one end of the lead screw, and the head extends into the cylinder. The head can compress air during the movement to push the piston to move. The other end of the lead screw penetrates into the main unit along the surface of the main unit through a connecting plate and is connected to the outer shell. The outer shell is pushed to move under the adjustment of the first nut.
7. The gap adjustment structure of the rotary feeder valve according to claim 5, characterized in that: The spring-type adjustment mechanism is a spring nut, including a second spring, a second nut and a screw rod; one end of the screw rod penetrates into the main unit along the surface of the main unit through the connecting plate and is connected to the housing; The second nut is arranged on the screw rod, and the screw rod can perform linear motion under the rotation of the second nut; One end of the second spring is connected to the second nut, and the other end is connected to the housing, and is sleeved on the screw rod. By rotating the second nut, the screw rod produces linear motion, and the second spring expands and contracts to adjust the radial gap to become larger or smaller.
8. The gap adjustment structure of the rotary feeding valve according to claim 6 or 7, characterized in that: 5-10 points are arranged at the moving position of the nut of the spring-type adjustment mechanism, and the radial clearance movement is reduced by 0.5-1 mm with each rotation of the nut.
9. The gap adjustment structure of the rotary feeding valve according to claim 8, characterized in that: The 5-10 points set at the moving position of the nut are unequally distributed points.
10. The gap adjustment structure of the rotary feeding valve according to claim 1, characterized in that: The spring type regulating mechanism is arranged on one side or both sides close to the feed inlet of the valve body.