Rotary valve structure

Abstract

The utility model discloses a rotary valve structure and relates to the technical field of rotary valves. The rotary valve comprises a valve shell and further comprises a rotor, and the rotor comprises a rotating shaft rotationally installed in the middle of the valve shell and impellers fixed to the outer wall of the rotating shaft in an annular array at intervals; the multiple partition plates are movably arranged on the outer wall of the impeller in a sleeving mode; and the driving assembly is installed in the rotor and used for adjusting the position of the partition plate on the outer wall of the impeller. According to the rotary valve, the movable partition plate is arranged on the outer wall of the impeller in a sleeving mode, the driving assembly is assembled in the rotor in a matched mode, and the positions of the partition plate and the outer wall of the impeller are adjusted through the driving assembly, so that the side wall of the partition plate and the inner wall of the valve cavity of the valve shell are kept in a tightly attached state, and continuous and equal conveying of raw materials in the valve cavity is achieved; and meanwhile, adjustment can be conducted when the gap between the partition plate and the inner wall of the valve cavity is increased, normal operation of the rotary valve is guaranteed, and meanwhile the service life of the partition plate is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary valves, in particular to a rotary valve structure. Background Art

[0002] The rotary valve is mainly composed of a rotor, housing, sealing part, bearing part and gas phase balance device. It is generally suitable for conveying granular or powder media at a pressure of 0.4MPa and an operating temperature below 120°C.

[0003] In the prior art, a utility model patent with authorization announcement number CN207107689U discloses a discharge rotary valve. In this rotary valve, due to the oblong hole, the partition plate is in an active state relative to the supporting plate, and the fixing rod connected to the cylindrical spring can fix the cylindrical spring. The cylindrical spring elastic member makes the partition plate tightly attached to the inner wall of the valve body. In this way, even if the partition plate is worn during the rotation of the supporting plate, the gap between the partition plate and the valve body chamber can be filled in time, thereby avoiding the flow of plastic particles between the chambers during operation, thereby achieving the purpose of continuously and evenly conveying plastic particles for a long time.

[0004] However, the above patent still has the following problems in actual use: although the partition plate can maintain close contact with the inner wall of the valve body chamber through the cooperation of the oblong hole and the cylindrical spring to prevent the material from flowing in the chamber during operation, the centrifugal force generated by the operation of the rotor and the active state of the partition plate increase the interaction force between the partition plate and the inner wall of the valve body chamber. This also leads to an increase in the friction resistance between the partition plate and the inner wall of the valve body chamber during rotation, which easily accelerates the wear of the partition plate, thereby shortening the service life of the partition plate. For this reason, a rotary valve structure is now proposed. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a rotary valve structure, which solves the problem that the separation plate on the impeller is easily increased in friction resistance due to the centrifugal force, thereby accelerating the wear of the separation plate.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A rotary valve structure includes a valve housing and further includes:

[0007] The rotor includes a rotating shaft rotatably mounted in the middle of the valve housing and impellers fixed to the outer wall of the rotating shaft in an annular array at intervals;

[0008] A plurality of partition plates, wherein the plurality of partition plates are movably sleeved on the outer wall of the impeller, wherein the end of the partition plate close to the impeller is in a U-shape concave inward, and the end of the partition plate away from the impeller is in a conical shape;

[0009] A drive assembly is installed inside the rotor and is used to adjust the position of the partition plate on the outer wall of the impeller.

[0010] Preferably, a linear through hole is opened on both the front and back sides of the impeller, a connecting slider is movably connected in the linear through hole, both ends of the connecting slider are fixedly connected to the inner wall of the partition plate, and the driving component drives the partition plate to move along the direction of the linear through hole through the connecting slider.

[0011] Preferably, the driving assembly includes a connecting rod, the end of the connecting rod is rotatably connected to the connecting slider, an installation cavity is opened inside the rotating shaft, a power assembly is arranged inside the installation cavity, a linear through groove connected to the installation cavity is opened on the outer wall of the rotating shaft, the other end of the connecting rod extends from the linear through groove into the installation cavity and is transmission-connected to the power assembly, and the power assembly is used to drive the end of the connecting rod to move.

[0012] Preferably, the power assembly includes a bidirectional screw, which is rotatably connected to the inside of the installation cavity. The outer wall of the bidirectional screw is threadedly connected to two nut seats, and the end of the connecting rod extending into the installation cavity is hinged to the outer wall of the nut seat.

[0013] Preferably, an opening communicating with the installation cavity is formed at one end of the rotating shaft, and an end of the bidirectional screw rod close to the rotating shaft opening is a polygonal column.

[0014] Preferably, the opening at one end of the rotating shaft is polygonal, and a positioning sleeve is movably inserted into the opening at one end of the rotating shaft. A telescopic slot is provided at the end of the positioning sleeve close to the bidirectional screw, and a wrench slot is provided at the end of the positioning sleeve away from the bidirectional screw. An elastic member is fixed between the positioning sleeve and the bidirectional screw.

[0015] Preferably, the elastic member includes a baffle and a return spring, the return spring is fixedly connected to the end of the outer wall of the bidirectional screw close to the positioning sleeve, and the return spring is fixedly connected between the baffle and the positioning sleeve.

[0016] Preferably, a feed port is fixedly provided on the top of the valve housing, and a discharge port is fixedly provided on the bottom of the valve housing, and the feed port and the discharge port are communicated with each other through a valve cavity inside the valve housing.

[0017] The utility model discloses a rotary valve structure, which has the following beneficial effects:

[0018] The rotary valve is constructed by sleeve-mounting a movable partition plate on the outer wall of the impeller and assembling a drive assembly in the rotor. The position of the partition plate on the outer wall of the impeller is adjusted by the drive assembly. This not only allows the side wall of the partition plate to maintain close contact with the inner wall of the valve cavity of the valve housing, thereby achieving continuous and even transportation of raw materials in the valve cavity, but also allows adjustment when the gap between the partition plate and the inner wall of the valve cavity increases, thereby ensuring the normal operation of the rotary valve and extending the service life of the partition plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a front cross-sectional structural diagram of the rotor of the utility model;

[0022] Figure 3 For this utility model Figure 2 A local enlarged structural diagram of point A;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the impeller of the utility model;

[0024] In the figure: 100, valve housing; 101, feed port; 102, discharge port; 200, rotating shaft; 201, impeller; 202, partition plate; 203, mounting cavity; 204, linear through groove; 205, bidirectional screw; 206, nut seat; 207, connecting rod; 208, linear through hole; 209, connecting slider; 210, positioning sleeve; 211, telescopic slot; 212, wrench slot; 213, baffle; 214, return spring. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0026] The embodiment of the present application solves the problem that the partition plate on the impeller is easily susceptible to increased friction resistance due to centrifugal force, thereby accelerating the wear of the partition plate, by providing a rotary valve structure. This is achieved by arranging a movable partition plate 202 on the outer wall of the impeller 201, and then assembling a drive component in the rotor. The position of the partition plate 202 on the outer wall of the impeller 201 is adjusted by the drive component. This not only allows the side wall of the partition plate 202 to maintain a close contact with the inner wall of the valve cavity of the valve housing 100, thereby achieving continuous and even transportation of raw materials in the valve cavity, but also allows adjustment when the gap between the partition plate 202 and the inner wall of the valve cavity increases, thereby ensuring the normal operation of the rotary valve while extending the service life of the partition plate 202.

[0027] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] The embodiment of the utility model discloses a rotary valve structure.

[0029] According to the attached Figure 1 As shown in FIG. 4 , the valve housing 100 includes a feed port 101 fixedly provided on the top of the valve housing 100 and a discharge port 102 fixedly provided on the bottom of the valve housing 100. The feed port 101 and the discharge port 102 are connected through a valve cavity inside the valve housing 100. The valve housing 100 also includes a rotor, a plurality of partition plates 202 and a drive assembly. The feed port 101 and the discharge port 102 are respectively connected to external pipes. The rotor rotates in the valve cavity of the valve housing 100 to transport the material. The rotor includes a rotating shaft 200 rotatably mounted in the middle of the valve housing 100 and an impeller 201 fixed to the outer wall of the rotating shaft 200 in an annular array. A plurality of partition plates 202 are movably sleeved on the outer wall of the impeller 201. The end of the partition plate 202 close to the impeller 201 is in a U-shape that is concave inwards, and the end of the partition plate 202 away from the impeller 201 is conical. One end of the partition plate 202 is in a U-shape that is concave inwards and can be slidably sleeved with the outer wall of the impeller 201. The partition plate 202 can be telescopically moved on the impeller 201. At the same time, the other end of the partition plate 202 is conical, which can reduce the contact area with the inner wall of the valve cavity, thereby reducing the friction resistance between the two. The drive component is installed inside the rotor. The drive component is used to adjust the position of the partition plate 202 on the outer wall of the impeller 201. The drive component drives the partition plate 202 to move on the outer wall of the impeller 201, adjusts the width between the partition plate 202 and the impeller 201, and locks the position of the partition plate 202 on the impeller 201. In this way, the partition plate 202 can be kept in contact with the inner wall of the valve cavity while avoiding the increase of the extrusion pressure between the partition plate 202 and the inner wall of the valve cavity due to the centrifugal force generated by the rotation, thereby effectively reducing the wear rate of the partition plate 202, so that the partition plate 202 can maintain continuous and even transportation of materials in the valve cavity while extending the service life of the partition plate 202.

[0030] Furthermore, a straight through hole 208 is provided on both the front and back sides of the impeller 201, and a connecting slider 209 is movably connected in the straight through hole 208. The two ends of the connecting slider 209 are respectively fixedly connected to the inner wall of the partition plate 202. The driving component drives the partition plate 202 to move along the straight through hole 208 through the connecting slider 209. The interior of the impeller 201 is hollow and moves along the straight through hole 208 through the connecting slider 209. The connection between the connecting slider 209 and the inner wall of the partition plate 202 is fixed, so that the connecting slider 209 can move while also driving the partition plate 202 to move. Moreover, the shielding effect of the partition plate 202 on the straight through hole 208 will prevent the straight through hole 208 from being exposed to the outside, thereby preventing material from entering from the straight through hole 208, effectively avoiding the accumulation and waste of material, and maintaining the stable transmission of material in the valve cavity.

[0031] It should be noted that the driving assembly includes a connecting rod 207, an end of the connecting rod 207 is rotatably connected to the connecting slider 209, a mounting cavity 203 is provided inside the rotating shaft 200, and a power assembly is provided inside the mounting cavity 203. A linear through-slot 204 communicating with the mounting cavity 203 is provided on the outer wall of the rotating shaft 200, and the other end of the connecting rod 207 extends from the linear through-slot 204 into the mounting cavity 203 and is transmission-connected to the power assembly. The power assembly is used to drive the end of the connecting rod 207 to move. The end of the connecting rod 207 is driven by the power assembly to move, and the end of the connecting rod 207 that is rotatably connected to the connecting slider 209 is restricted, so that the connecting rod 207 can be driven by the power assembly while the connecting rod 207 is driven to move along the linear through-hole 208, thereby achieving the drive for the partition plate 202 to extend and retract on the outer wall of the impeller 201;

[0032] The power assembly includes a bidirectional screw 205, which is rotatably connected to the interior of the installation cavity 203. The outer wall of the bidirectional screw 205 is threadedly connected to two nut seats 206. The end of the connecting rod 207 extending into the installation cavity 203 is hinged to the outer wall of the nut seat 206. The rotation of the bidirectional screw 205 can drive the two nut seats 206 thereon to move synchronously toward or in the opposite directions, so that the two connecting rods 207 on the same impeller 201 can be stably retracted or opened, thereby achieving a stable drive for the expansion and contraction of the partition plate 202. At the same time, there is a self-locking effect between the bidirectional screw 205 and the nut seat 206, so that the partition plate 202 can remain fixed in position after the position is adjusted to avoid being affected by centrifugal force.

[0033] Furthermore, an opening is provided at one end of the rotating shaft 200 that is connected to the mounting cavity 203, and the end of the bidirectional screw 205 close to the opening of the rotating shaft 200 is a polygonal column; the opening at one end of the rotating shaft 200 is polygonal, and a positioning sleeve 210 is movably inserted into the opening at one end of the rotating shaft 200, and a telescopic slot 211 is provided at the end of the positioning sleeve 210 close to the bidirectional screw 205, and a wrench slot 212 is provided at the end of the positioning sleeve 210 away from the bidirectional screw 205, and an elastic member is fixed between the positioning sleeve 210 and the bidirectional screw 205, and the elastic member is used to fix the positioning sleeve 210 and the bidirectional screw 205. The elastic expansion and contraction effect allows the positioning sleeve 210 to expand and contract at the end of the shaft 200, and the rotation of the positioning sleeve 210 is restricted by the end of the shaft 200. In the initial state, the bidirectional screw 205 and the shaft 200 remain relatively fixed and cannot rotate independently, thereby avoiding the problem of relative rotation between the bidirectional screw 205 and the nut seat 206 caused by misoperation or the influence of the rotation of the shaft 200, resulting in inaccurate positioning of the partition plate 202. When the bidirectional screw 205 is needed to drive the partition plate 202 to adjust its position, it is only necessary to The end of the wrench is inserted into the wrench groove 212 of the end face of the positioning sleeve 210, and then pressed inward to drive the positioning sleeve 210 to move and separate from the end of the rotating shaft 200, and the other end of the rotating shaft 200 is subjected to the rotation restriction of the driving motor (or the manual restriction of the rotation of the rotating shaft 200), so that the wrench can drive the bidirectional screw 205 to rotate through the positioning sleeve 210, thereby achieving stable driving of the bidirectional screw 205; in a preferred embodiment, the elastic member includes a baffle 213 and a return spring 214, and the return spring 214 is fixedly connected to the bidirectional screw 205. 05 The outer wall is close to the end of the positioning sleeve 210, and the return spring 214 is fixedly connected between the baffle 213 and the positioning sleeve 210. The return spring 214 cooperates with the setting of the baffle 213 to enable the positioning sleeve 210 to be reset without external force. In some embodiments, the outer wall of the positioning sleeve 210 can be gear-shaped, and the port of the rotating shaft 200 is in the shape of an internal gear ring that matches the positioning sleeve 210. While the positioning sleeve 210 can fit more stably on the port of the rotating shaft 200, it can also reduce the error of the docking between the two, better meeting the use requirements.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A rotary valve structure, comprising a valve housing (100), characterized in that: Also includes: A rotor, comprising a rotating shaft (200) rotatably mounted in the middle of the valve housing (100) and impellers (201) fixed to the outer wall of the rotating shaft (200) in an annular array at intervals; A plurality of partition plates (202), wherein the plurality of partition plates (202) are movably sleeved on the outer wall of the impeller (201), one end of the partition plate (202) close to the impeller (201) is inwardly concave in a U-shape, and one end of the partition plate (202) away from the impeller (201) is in a conical shape; A drive assembly is installed inside the rotor, and the drive assembly is used to adjust the position of the partition plate (202) on the outer wall of the impeller (201). The drive assembly includes a connecting rod (207), and the end of the connecting rod (207) is rotatably connected to the connecting slider (209). The rotating shaft (200) is provided with a mounting cavity (203). The mounting cavity (203) is provided with a power assembly, and the power assembly includes a bidirectional screw (205). The bidirectional screw (205) is rotatably connected to the mounting cavity (203). The outer wall of the bidirectional screw (205) is threadedly connected to two nut seats (206). The end of the connecting rod (207) extending into the installation cavity (203) is hinged to the outer wall of the nut seat (206), and an opening communicating with the installation cavity (203) is provided at one end of the rotating shaft (200). The end of the bidirectional screw (205) close to the opening of the rotating shaft (200) is a polygonal column, and the opening at one end of the rotating shaft (200) is polygonal. A positioning sleeve (210) is movably inserted into the opening at one end of the rotating shaft (200), and a telescopic slot (211) is provided at one end of the positioning sleeve (210) close to the bidirectional screw (205). An elastic member is fixed between the positioning sleeve (210) and the bidirectional screw (205).

2. A rotary valve structure according to claim 1, characterized in that: The impeller (201) is provided with a linear through hole (208) on both the front and back sides. A connecting slider (209) is movably connected in the linear through hole (208). Both ends of the connecting slider (209) are fixedly connected to the inner wall of the partition plate (202). The driving assembly drives the partition plate (202) to move along the direction of the linear through hole (208) via the connecting slider (209).

3. A rotary valve structure according to claim 1, characterized in that: The outer wall of the rotating shaft (200) is provided with a linear through slot (204) connected to the installation cavity (203); the other end of the connecting rod (207) extends from the linear through slot (204) into the installation cavity (203) and is transmission-connected to the power assembly; the power assembly is used to drive the end of the connecting rod (207) to move.

4. A rotary valve structure according to claim 3, characterized in that: A wrench slot (212) is formed at one end of the positioning sleeve (210) away from the bidirectional screw (205).

5. A rotary valve structure according to claim 4, characterized in that: The elastic member includes a baffle (213) and a return spring (214), wherein the return spring (214) is fixedly connected to the end of the outer wall of the bidirectional screw (205) close to the positioning sleeve (210), and the return spring (214) is fixedly connected between the baffle (213) and the positioning sleeve (210).

6. A rotary valve structure according to claim 1, characterized in that: A feed port (101) is fixedly provided at the top of the valve housing (100), and a discharge port (102) is fixedly provided at the bottom of the valve housing (100); the feed port (101) and the discharge port (102) are connected via a valve cavity inside the valve housing (100).

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