Star rotary valve

Abstract

The utility model relates to a rotary valve, in particular to a star-shaped rotary valve, which solves the problem that powder in a valve body of the existing rotary valve easily intrudes into a bearing used for supporting a return valve core, so that the operation is easy to be blocked, and is characterized in that material blocking plates are arranged at two ends of a material separating plate, and the outer edges of the material blocking plates are arranged close to the inner wall of the valve body; powder is prevented from diffusing into the bearing; projections of the feeding port and the discharging port of the valve body in the vertical direction are oval, and the long axis of the oval is parallel to the axis of the valve element. The outlet of the feed pipe is matched with the feed port of the valve body, and the length of the long axis of the elliptical projection of the outlet of the feed pipe is smaller than that of the partition plate; an inlet of the discharging pipe is matched with the discharging port of the valve body, and the length of the long axis of the oval projection of the inlet of the discharging pipe is larger than that of the partition plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary valve, concretely relates to a star rotary valve. BACKGROUND

[0002] In the packaging operation of powder, the powder is transported through the pipeline, and its principle is to pass high-pressure gas into the pipeline, and the powder moves under the push of the high-pressure gas, and due to the large height difference of the discharge chute, the powder will flow like water, and the flow of the powder cannot be controlled; in order to control the flow of the material, a rotary valve is generally added below the vertical chute, the valve body is provided with an inlet pipe and an outlet pipe, the inlet pipe is connected with the valve body, the outlet pipe is connected with the lower machine, the falling speed of the powder is controlled through the valve core in the valve body, the valve core is generally composed of a rotary valve core and blades arranged on the outer wall of the rotary valve core in the circumferential direction, the rotary valve core is connected with the output shaft of the motor, and the motor drives the rotary valve core to rotate, a part of the powder is released to the outlet pipe every time a certain angle is turned, and the flow of the powder is controlled by controlling the rotating speed of the motor. However, in order to process simply and save processing cost, the outlet pipe and the inlet pipe of the existing rotary valve are both straight pipes, the inner diameter is constant, when the product enters the valve body, the material passing area does not increase, and when the chute discharges, the powder will overflow in the valve body, and the flow of the powder cannot be effectively controlled by the rotating speed; and since the upper opening and the lower opening are congruent, the diameter of the valve body is generally large in order to be connected with the inlet pipe and the outlet pipe; and the powder in the valve body is easy to invade the bearing for supporting the valve core, and running jam is easy to occur. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the technical problems that the inlet pipe and the outlet pipe of the existing rotary valve are both straight pipes, the flow rate of the powder cannot be effectively controlled by the rotating speed, the diameter of the valve body is too large, the powder in the valve body is easy to invade the bearing for supporting the valve core, and running jam is easy to occur, and provides a star rotary valve.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0005] A star rotary valve, comprising a valve body, an inlet pipe, an outlet pipe and a motor, the valve body is a hollow structure, one end of which is provided with a motor, the output end of the motor is connected with a valve core, the valve core extends into the valve body, and a plurality of material separation plates are uniformly distributed on the outer wall of the valve core in the circumferential direction, and the special feature is that:

[0006] Two material blocking plates are further sleeved on the outer wall of the valve core, the two material blocking plates are located at both ends of the material separation plate and connected with the material separation plate, and the outer edge of the material blocking plate is close to the inner wall of the valve body;

[0007] The feeding port and the discharging port are oppositely arranged on the outer wall of the valve body, and the projections of the feeding port and the discharging port in the vertical direction are both elliptical, and the long axis of the elliptical shape is parallel to the axis of the valve core;

[0008] The outlet of the feeding pipe is connected to the feeding port of the valve body, the inlet of the feeding pipe is a circular port, the outlet of the feeding pipe is matched with the feeding port of the valve body, and the long axis length of the elliptical projection of the outlet of the feeding pipe is smaller than the length of the baffle plate.

[0009] The inlet of the discharging pipe is connected to the discharging port of the valve body, and the outlet of the discharging pipe is a circular port, the inlet of the discharging pipe is matched with the discharging port of the valve body, and the long axis length of the elliptical projection of the inlet of the discharging pipe is larger than the length of the baffle plate.

[0010] Further, a speed reducer is connected to one end of the valve body, the output end of the motor is connected to the input end of the speed reducer, and the output end of the speed reducer is connected to the valve core.

[0011] Further, the baffle plate is circumferentially and uniformly arranged with eight on the outer wall of the valve core.

[0012] Further, the two ends of the valve body are both provided with a connecting flange, and the speed reducer is installed on one end of the valve body through the connecting flange.

[0013] Further, a central hole is formed in the center of the connecting flange, a bearing is installed in the central hole, and the two ends of the valve core are both rotationally connected to the two bearings.

[0014] Further, the outlet of the discharging pipe is connected with a butt flange.

[0015] Further, two supporting plates are oppositely arranged on the two sides of the discharging pipe, one end of each supporting plate is connected to the outer wall of the valve body, and the other end is connected to the butt flange.

[0016] Further, a reinforcing plate is arranged on the two sides of the valve body, and each reinforcing plate is connected to the outer wall of the feeding pipe, the outer wall of the valve body, the outer wall of the discharging pipe and the butt flange.

[0017] Further, the two ends of the valve core are both provided with a stepped mounting structure, including a first stepped shaft and a second stepped shaft, the first stepped shaft is arranged close to the baffle plate, the diameter of the first stepped shaft is larger than that of the second stepped shaft, a dustproof ring is sleeved on the first stepped shaft, one end of the dustproof ring is abutted against the shaft shoulder between the valve core and the first stepped shaft, and the other end is abutted against the inner side surface of the connecting flange, and the bearing is sleeved on the second stepped shaft.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] (1) The star type rotary valve provided by the utility model is provided with two material blocking plates on the outer wall of the valve core, the two material blocking plates are located at two ends of the material separating plate and are connected with the material separating plate, the outer edge of the material blocking plate is arranged close to the inner wall of the valve body, a plurality of cavities are formed between the adjacent material separating plates, the flow of the material in the inner cavity of the valve body is greatly blocked, the powder entering the inner part of the valve body will be gathered in the cavity formed by the plurality of material separating plates between the two material blocking plates, and the powder is prevented from diffusing everywhere and entering the bearing, causing the operation to be stuck; the inlet of the feeding pipe is a circular port, the outlet of the feeding pipe is matched with the feeding port of the valve body, the long axis length of the oval projection of the outlet of the feeding pipe is smaller than the length of the material separating plate, the product can be ensured to fall between the material separating plates, the outlet of the discharging pipe is a circular port, the inlet of the discharging pipe is matched with the discharging port of the valve body, and the long axis length of the oval projection of the inlet of the discharging pipe is greater than the length of the material separating plate, the product located between the material separating plates and the product scattered between the connecting flange and the material blocking plate can be ensured to fall into the equipment below through the inlet of the discharging pipe when rotating to the discharging port; the feeding port and the discharging port of the valve body are both oval, and the long axis line of the oval is parallel to the axis line of the valve core, the axial space of the valve body is effectively utilized, the long axis of the oval is increased and the minor axis of the oval is correspondingly reduced, the diameter of the valve body is correspondingly reduced while the discharging speed is ensured.

[0020] (2) The star type rotary valve provided by the utility model is provided with a dustproof ring inside the bearing, and the dustproof ring is limited from moving in the axial direction through the stepped mounting structure, the erosion of the powder to the bearing is effectively prevented, and the service life of the bearing is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic view of the star type rotary valve embodiment of the utility model;

[0022] Figure 2 It is a front view of the utility model embodiment;

[0023] Figure 3 It is Figure 2 A-A direction sectional view;

[0024] Figure 4 It is Figure 2 Right view;

[0025] Figure 5 It is Figure 4 B-B direction sectional view;

[0026] The following is the explanation of the reference signs:

[0027] 1-valve body, 2-feeding pipe, 3-discharging pipe, 4-motor, 5-reducer, 6-valve core, 61-first stepped shaft, 62-second stepped shaft; 7-material separating plate; 8-material blocking plate, 9-bearing, 10-connecting flange, 11-butting flange, 12-supporting plate, 13-strengthening plate, 14-dustproof ring. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the drawings and specific embodiments.

[0029] With reference to Figures 1-5 The star-shaped rotary valve comprises a valve body 1, a feeding pipe 2, a discharging pipe 3 and a motor 4. The valve body 1 is of a hollow structure, one end of which is provided with a speed reducer 5. The output end of the motor 4 is connected with the input end of the speed reducer 5. The output end of the speed reducer 5 is connected with a valve core 6, which extends into the valve body 1.

[0030] In order to realize the rotation support of the valve core 6, two connecting flanges 10 are arranged at the two ends of the valve body 1. A central hole is formed at the central position of each connecting flange 10. A bearing 9 is arranged in the central hole. The valve core 6 is rotationally connected with the two bearings 9 respectively. The speed reducer 5 is arranged at one end of the valve body 1 through the connecting flange 10.

[0031] Eight material separation plates 7 are arranged on the outer wall of the valve core 6 in a circumferential direction. The equal relationship between the discharging speed and the rotation speed is effectively ensured. Thus, the discharging speed can be controlled by adjusting the rotation speed of the motor 4.

[0032] Because the conventional rotary valve is exposed to the valve body 1, the powder can invade the bearing 9 after the product enters the valve body, which causes the operation to be stuck. In this embodiment, two material blocking plates 8 are arranged on the outer wall of the valve core 6. The two material blocking plates 8 are arranged at the two ends of the material separation plate 7 and connected with the material separation plate 7. The outer edge of the material blocking plate 8 is arranged close to the inner wall of the valve body 1. A feeding port and a discharging port are formed on the outer wall of the valve body 1 corresponding to the position of the material separation plate 7. The feeding port and the discharging port are arranged opposite to each other. Thus, no matter whether the material is fed or discharged, the powder is always blocked between the two material blocking plates 8 and cannot spread to the position of the bearing 9, which ensures the stable operation of the bearing 9.

[0033] In order to further increase the dustproof performance of the bearing 9, a stepped mounting structure is arranged at the two ends of the valve core 6. The stepped mounting structure comprises a first stepped shaft 61 and a second stepped shaft 62. The first stepped shaft 61 is arranged close to the material blocking plate 8. The diameter of the first stepped shaft 61 is greater than that of the second stepped shaft 62. A dustproof ring 14 is arranged on the first stepped shaft 61. One end of the dustproof ring 14 is abutted with the shaft shoulder between the valve core 6 and the first stepped shaft 61. The other end of the dustproof ring 14 is abutted with the inner side surface of the connecting flange 10. The bearing 9 is arranged on the second stepped shaft 62.

[0034] The projections of the inlet and the outlet in the vertical direction are all oval, and the long axis of the oval is parallel to the axis of the valve core 6, effectively utilizing the axial space of the valve body 1, increasing the long axis of the oval and correspondingly reducing the short axis of the oval, while ensuring the discharging speed, correspondingly reducing the diameter of the valve body 1. The outlet of the feeding pipe 2 is connected to the inlet, the inlet of the feeding pipe 2 is a circular port, the outlet is matched with the shape of the inlet, the long axis length of the oval projection of the inlet is smaller than the length of the spacing plate 7, so that the feeding speed can be ensured, and the long axis length of the oval projection of the inlet is smaller than the length of the spacing plate 7, so that all the products can fall between the two blocking plates 8 without eroding the bearing 9, and the inlet of the discharging pipe 3 is connected to the outlet, and the outlet of the discharging pipe 3 is a circular port, the inlet of the discharging pipe 3 is matched with the shape of the outlet, and the long axis length of the oval projection of the outlet is greater than the length of the spacing plate 7, so that the powder between the adjacent two spacing plates 7 rotating to the outlet can all fall from the outlet, preventing the powder from being accumulated between the adjacent two spacing plates 7, and a butt flange 11 is connected to one end of the outlet of the discharging pipe 3, and the butt flange 11 can be used for connecting with other equipment.

[0035] In order to improve the structural stability, two supporting plates 12 are arranged on both sides of the discharging pipe 3, one end of the supporting plate 12 is connected with the outer wall of the valve body 1, the other end is connected with the butt flange 11, and a reinforcing plate 13 is arranged on both sides of the valve body 1, and each reinforcing plate 13 is connected with the outer wall of the feeding pipe 2, the outer wall of the valve body 1, the outer wall of the discharging pipe 3 and the butt flange 11.

[0036] In use, the powder is transported from the pipeline to the feeding pipe 2, enters the valve body 1 through the feeding pipe 2, the motor 4 drives the valve core 6 to rotate through the speed reducer 5, and the products enter the cavity between the adjacent spacing plates 7 in turn with the rotation of the spacing plates 7, when the products are transported to the outlet, they enter the discharging pipe 3 from the outlet, and finally enter other equipment connected with the discharging pipe 3, such as packaging equipment, when it is necessary to adjust the discharging speed, the speed of the motor 4 is changed.

[0037] The above-described embodiments are only used to describe the specific implementation of the present application, and do not limit the scope of the present application, and various modifications and improvements of the technical scheme of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application.

Claims

1. A star-shaped rotary valve, comprising a valve body (1), an inlet pipe (2), an outlet pipe (3), and a motor (4), wherein the valve body (1) is a hollow structure, and a motor (4) is installed at one end, a valve core (6) is connected to the output end of the motor (4), the valve core (6) extends into the valve body (1), and a plurality of baffle plates (7) are evenly distributed circumferentially on the outer wall of the valve core (6), characterized in that: Two blocking plates (8) are also fitted on the outer wall of the valve core (6). The two blocking plates (8) are located at both ends of the partition plate (7) and connected to the partition plate (7). The outer edge of the blocking plate (8) is set close to the inner wall of the valve body (1). An inlet and an outlet are provided on the outer wall of the valve body (1) corresponding to the position of the baffle plate (7). The inlet and outlet are set opposite to each other. The projections of the inlet and outlet in the vertical direction are both elliptical, and the major axis of the ellipse is parallel to the axis of the valve core (6). The outlet of the feed pipe (2) is connected to the feed port of the valve body. The inlet of the feed pipe (2) is a circular opening. The outlet of the feed pipe (2) is adapted to the feed port of the valve body (1). The major axis length of the elliptical projection of the outlet of the feed pipe (2) is less than the length of the partition plate (7). The inlet of the discharge pipe (3) is connected to the outlet of the valve body (1), and the outlet of the discharge pipe (3) is a circular opening. The inlet of the discharge pipe (3) is compatible with the outlet of the valve body (1), and the major axis of the elliptical projection of the inlet of the discharge pipe (3) is greater than the length of the partition plate (7).

2. The star-shaped rotary valve according to claim 1, characterized in that: It also includes a speed reducer (5), which is connected to one end of the valve body (1), the output end of the motor (4) is connected to the input end of the speed reducer (5), and the output end of the speed reducer (5) is connected to the valve core (6).

3. The star-shaped rotary valve according to claim 2, characterized in that: The separator plate (7) has eight plates evenly distributed circumferentially on the outer wall of the valve core (6).

4. The star-shaped rotary valve according to claim 3, characterized in that: Both ends of the valve body (1) are equipped with connecting flanges (10), and the reducer (5) is installed at one end of the valve body (1) through the connecting flanges (10).

5. The star-shaped rotary valve according to claim 4, characterized in that: The connecting flange (10) has a central hole, and a bearing (9) is installed in the central hole. The two ends of the valve core (6) are rotatably connected to the two bearings (9).

6. The star-shaped rotary valve according to claim 5, characterized in that: The outlet end of the discharge pipe (3) is connected to a mating flange (11).

7. The star-shaped rotary valve according to claim 6, characterized in that: Two support plates (12) are arranged opposite each other on both sides of the discharge pipe (3). One end of the support plate (12) is connected to the outer wall of the valve body (1), and the other end is connected to the docking flange (11).

8. The star-shaped rotary valve according to claim 7, characterized in that: It also includes reinforcing plates (13), which are arranged opposite to each other on both sides of the valve body (1), and each reinforcing plate (13) is connected to the outer wall of the feed pipe (2), the outer wall of the valve body (1), the outer wall of the discharge pipe (3), and the docking flange (11).

9. The star-shaped rotary valve according to claim 8, characterized in that: The valve core (6) has stepped mounting structures at both ends, including a first stepped shaft (61) and a second stepped shaft (62). The first stepped shaft (61) is located close to the blockage plate (8), and the diameter of the first stepped shaft (61) is larger than the diameter of the second stepped shaft (62). A dustproof ring (14) is fitted on the first stepped shaft (61). One end of the dustproof ring (14) abuts against the shoulder between the valve core (6) and the first stepped shaft (61), and the other end abuts against the inner side of the connecting flange (10). The bearing (9) is fitted on the second stepped shaft (62).

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