Screw valve convenient to disassemble and assemble

Abstract

The screw valve convenient to disassemble and assemble comprises a rotor fixing base, a stator fixing base and a quick disassembly piece, the rotor fixing base is provided with a first installation face, the stator fixing base is provided with a second installation face, the second installation face and the first installation face are oppositely arranged, and the quick disassembly piece is arranged on the rotor fixing base and the stator fixing base in a sleeved mode. The rotor fixing seat is provided with a first connecting part and a second connecting part, the first connecting part is provided with a first abutting face used for being matched with the connecting face of the stator fixing seat, the second connecting part is provided with a first thread used for being in threaded connection with the connecting end of the rotor fixing seat, and during installation, the first thread is gradually screwed; the first abutting surface pushes the stator fixing seat to be close to the rotor fixing seat, so that the second mounting surface and the first mounting surface are in press fit. The utility model at least has the following advantages: not only can the fixing and supporting function be realized, but also the aligning and guiding during the installation can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, and more specifically to a screw valve which is convenient for disassembly and assembly. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] The screw dispensing valve is a high-precision, high-efficiency automated control device that relies on the screw to rotate around its own axis to squeeze out the glue to achieve dispensing operations. It is widely used in precision dispensing in electronics, automobiles, medical and other fields.

[0004] In the actual application of the screw valve, it is necessary to regularly disassemble and inspect it. When the stator is disassembled and reinstalled, in order to avoid inaccurate glue metering or glue overflow, it is necessary to ensure that the stator is installed in the correct position without deviation. At present, the installation of the stator in the existing market can only play a fixed support role and cannot achieve alignment and guidance. It is necessary to install an additional guide mechanism to assist the installation or the operator directly judges it. Therefore, disassembly and installation are very inconvenient, and the deviation of the stator installation affects the quality of dispensing.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the utility model and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the utility model. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a screw valve which is convenient for disassembly and assembly, which can not only play a role of fixing and supporting, but also can realize alignment and guiding during installation.

[0007] In order to solve the above technical problems, the utility model provides a screw valve that is easy to disassemble and assemble, including:

[0008] A rotor fixing seat having a first mounting surface;

[0009] The stator fixing seat has a second mounting surface, and the second mounting surface is arranged opposite to the first mounting surface;

[0010] A quick-release component which is sleeved on the rotor fixing seat and the stator fixing seat and has a first connecting portion and a second connecting portion;

[0011] The first connecting portion has a first abutting surface for adapting to the connecting surface of the stator fixing seat, and the second connecting portion has a first thread for threaded connection with the connecting end of the rotor fixing seat. During installation, the first thread is gradually tightened, and the first abutting surface pushes the stator fixing seat close to the rotor fixing seat so that the second mounting surface and the first mounting surface are pressed and matched.

[0012] As further preferred, the first abutting surface is a first wedge-shaped surface, and the connecting surface is a second wedge-shaped surface matched therewith.

[0013] As a further preference, the cross-sections of the first mounting surface and the second mounting surface are both arranged in a ring-shaped manner in a stepped shape, and the first mounting surface and the second mounting surface are matched in a concave-convex manner.

[0014] As a further preferred embodiment, the invention further comprises a power assembly, a sealing assembly, a needle, a rotor and a stator coaxially arranged with the rotor, wherein the rotor is accommodated in the inner cavity of the rotor fixing seat, the stator is embedded and installed in the stator mounting seat, the rotor is provided with a spiral structure along its axial direction, the inner diameter of the stator is clearance-matched with the outer diameter of the rotor, a liquid containing cavity is formed between the spiral structure of the rotor and the stator to contain liquid with medium and low viscosity, one end of the rotor is connected to the output end of the power assembly, and the power assembly is configured to drive the rotor to rotate so as to squeeze the liquid out of the needle.

[0015] As a further preference, the rotor is an eccentric screw, the end of which away from the stator is a metal flexible part wrapped with a rubber layer, the end close to the stator is a metal part, and the stator is a rubber part.

[0016] As a further preferred embodiment, the power assembly includes a servo motor, a reducer, a coupling and a connecting shaft which are sequentially connected in transmission; a sealing cavity is arranged between the coupling and the rotor fixing seat via an adapter seat; the connecting shaft is arranged through the adapter seat, and one end of the connecting shaft is connected to the coupling, and the other end is connected to the rotor; the connecting shaft is sequentially arranged along the direction away from the coupling: a bearing, a retaining ring, a guide ring, a retaining frame and a first sealing ring for axial sealing; a second sealing ring for radial sealing is arranged at the connection between the adapter seat and the rotor fixing seat.

[0017] As a further preferred embodiment, a fixing block for installing a rubber cartridge is detachably mounted on one side of the rotor fixing seat, the fixing block is provided with a feed cavity, the rubber cartridge is mounted on the fixing block and the rubber cartridge is connected with the inner cavity of the rotor fixing seat through the feed cavity, and a heating unit is arranged at the bottom of the fixing block.

[0018] As a further preference, a temperature detection unit is installed on the outer side of the heating unit.

[0019] As a further preferred embodiment, a cylindrical fixing frame is installed on the fixing block, the rubber tube is embedded in the cylindrical fixing frame, and the inner wall of the cylindrical fixing frame is also provided with a heat-insulating layer that can wrap the outer surface of the rubber tube.

[0020] As a further preferred embodiment, the cylindrical fixing frame has a longitudinal opening, an adjusting block is installed in the opening, an adjusting plate is installed on the adjusting block, the adjusting block is provided with a plurality of mounting positions along the height direction, the mounting height of the adjusting plate is adjusted by installing the adjusting plate at different mounting positions, and a liquid level sensor for detecting the liquid level in the rubber cylinder is installed on the adjusting plate.

[0021] By means of the above technical solution, the beneficial effects of the utility model are as follows:

[0022] The utility model discloses a screw valve that is easy to disassemble and assemble. The quick-release parts can not only realize quick disassembly and facilitate maintenance, but also can quickly align the guide during installation, effectively avoiding the stator from being skewed during installation and affecting the quality of subsequent gluing and the life of the product. By providing a liquid level sensor and installing the liquid level sensor on an adjustment block that can be adjusted up and down, and the adjustment block is installed on a cylindrical fixing frame, it can be applied to rubber cylinders with different liquid levels, and it is very convenient to install and use. A heating unit is provided on the outer wall of the feed chamber, which can effectively ensure the fluidity of the glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This utility model Figure 1 AA section view in;

[0025] Figure 3 It is a three-dimensional diagram of the utility model;

[0026] Figure 4 This utility model Figure 2 A is an enlarged schematic diagram;

[0027] Figure 5 The utility model Figure 2 The enlarged schematic diagram of point B in FIG.

[0028] in:

[0029] 1. Rotor fixing seat; 101. First mounting surface; 2. Stator fixing seat; 201. Second mounting surface; 3. Quick release part; 303. First abutting surface; 304. First thread; 4. Power assembly; 401. Servo motor; 402. Reducer; 403. Coupling; 404. Connecting shaft; 5. Sealing assembly; 6. Needle; 7. Rotor; 8. Stator; 9. Adapter seat; 10. Bearing; 11. Guide ring; 12. Retaining frame; 13. First sealing ring; 14. Second sealing ring; 15. Fixing block; 1501. Feeding chamber; 16. Rubber cylinder; 17. Heating unit; 19. Cylindrical fixing frame; 20. Insulation layer; 21. Adjusting block; 22. Adjusting sheet; 23. Liquid level sensor. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0032] See attached Figure 1-5 , a screw valve convenient for assembly and disassembly described in a preferred embodiment of the present invention comprises: a power assembly 4, a sealing assembly 5, a needle 6, a rotor 7 and a stator 8 coaxially arranged with the rotor 7, and also comprises a rotor 7 fixing seat 1 for mounting the rotor 7 and a stator 8 mounting seat for mounting the stator 8, the rotor 7 mounting seat having a first mounting surface 101, the stator 8 fixing seat 2 having a second mounting surface 201, and a quick release member 3 is used to install the rotor 7 mounting seat and the stator 8 mounting seat, and during installation, the second mounting surface 201 is arranged opposite to the first mounting surface 101 for installation. The quick release member 3 is sleeved on the rotor 7 fixing seat 1 and the stator 8 fixing seat 2, and has a first connecting portion and a second connecting portion.

[0033] The first connection part has a first abutting surface 303 adapted to the connection surface of the stator 8 fixing seat 2, and the second connection part has a first thread 304 for threaded connection with the connection end of the rotor 7 fixing seat 1. The first abutting surface 303 is a first wedge-shaped surface, and the connection surface is a second wedge-shaped surface adapted thereto. The first wedge-shaped surface is a tapered surface that gradually narrows in the direction away from the rotor 7 fixing seat 1. The lower end of the tapered surface has a first flat surface, and a second flat surface is connected between the upper end and the first thread 304. During installation, the first thread 304 is gradually tightened, and the first abutting surface 303 pushes the stator 8 fixing seat 2 close to the rotor 7 fixing seat 1 so that the second installation surface 201 and the first installation surface 101 are pressed and matched. There is a small gap between the first flat surface and the outer surface of the stator 8 fixing seat 2, and there is a small gap between the second flat surface and the outer surface of the stator 8 fixing seat 2. The quick-release part 3 adopts such a structure, which can not only realize quick disassembly and facilitate maintenance, but also can quickly align the guide during installation, effectively avoiding the stator 8 from being skewed during installation, which will affect the quality of subsequent gluing and the service life of the product. Figure 4 In order to facilitate initial positioning, it is preferred that the first mounting surface 101 and the second mounting surface 201 are arranged in a stepped annular cross-section, and the first mounting surface 101 and the second mounting surface 201 are matched in a concave-convex manner.

[0034] The rotor 7 of the present application is accommodated in the inner cavity of the rotor 7 fixing seat 1, and the stator 8 is embedded and installed in the stator 8 mounting seat. The rotor 7 is provided with a spiral structure along its axial direction, and the inner diameter of the stator 8 is clearance-matched with the outer diameter of the rotor 7. A liquid containing cavity is formed between the spiral structure of the rotor 7 and the stator 8 to accommodate liquids with medium and low viscosities. One end of the rotor 7 is connected to the output end of the power component 4, and the power component 4 is configured to drive the rotor 7 to rotate to squeeze the liquid out of the needle 6. The rotor 7 is an eccentric screw, and its end away from the stator 8 is a metal flexible part wrapped with a rubber layer, and the end close to the stator 8 is a metal part. The stator 8 is a rubber part. The power assembly 4 includes a servo motor 401, a reducer 402, a coupling 403 and a connecting shaft 404 which are sequentially connected in transmission. A sealing cavity is provided between the coupling 403 and the rotor 7 fixed seat 1 through an adapter seat 9. The connecting shaft 404 is arranged through the adapter seat 9, and one end of the connecting shaft 404 is connected to the coupling 403, and the other end is connected to the rotor 7. The connecting shaft 404 is sequentially provided with the following along the direction away from the coupling 403: a bearing 10, a retaining ring, a guide ring 11, a retaining frame 12 and a first sealing ring 13 for axial sealing. The connection between the adapter seat 9 and the rotor 7 fixed seat 1 is provided with a second sealing ring 14 for radial sealing.

[0035] A fixing block 15 for installing a rubber cartridge 16 is detachably installed on one side of the rotor 7 fixing seat 1, and the fixing block 15 is provided with a feed cavity 1501. The rubber cartridge 16 is installed on the fixing block 15 and the rubber cartridge 16 is connected with the inner cavity of the rotor 7 fixing seat 1 through the feed cavity 1501. A heating unit 17 is provided at the bottom of the fixing block 15, and a temperature detection unit is installed on the outer side of the heating unit 17. A cylindrical fixing frame 19 is installed on the fixing block 15, and the rubber cartridge 16 is embedded in the cylindrical fixing frame 19. The inner wall of the cylindrical fixing frame 19 is also provided with an insulation layer 20 that can wrap the outer surface of the rubber cartridge 16. The cylindrical fixing frame 19 has a longitudinal opening, and an adjusting block 21 is installed in the opening. An adjusting piece 22 is installed on the adjusting block 21. The adjusting block 21 is provided with a plurality of mounting positions along the height direction. The mounting height of the adjusting piece 22 can be adjusted by installing the adjusting piece 22 at different mounting positions. A liquid level sensor 23 for detecting the liquid level in the rubber cylinder 16 is installed on the adjusting piece 22.

[0036] The above-described embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A screw valve that is easy to disassemble and assemble, characterized in that: include: A rotor fixing seat having a first mounting surface; The stator fixing seat has a second mounting surface, and the second mounting surface is arranged opposite to the first mounting surface; A quick-release component which is sleeved on the rotor fixing seat and the stator fixing seat and has a first connecting portion and a second connecting portion; The first connecting portion has a first abutting surface for adapting to the connecting surface of the stator fixing seat, and the second connecting portion has a first thread for threaded connection with the connecting end of the rotor fixing seat. During installation, the first thread is gradually tightened, and the first abutting surface pushes the stator fixing seat close to the rotor fixing seat so that the second mounting surface and the first mounting surface are pressed and matched.

2. The screw valve that is easy to disassemble and assemble according to claim 1, characterized in that: The first abutting surface is a first wedge-shaped surface, and the connecting surface is a second wedge-shaped surface matched therewith.

3. The screw valve that is easy to disassemble and assemble according to claim 1, characterized in that: The cross sections of the first mounting surface and the second mounting surface are both arranged in a ring shape in a stepped shape, and the first mounting surface and the second mounting surface are matched in a concave-convex manner.

4. The screw valve that is easy to disassemble and assemble according to claim 1, characterized in that: It also includes a power component, a sealing component, a needle, a rotor and a stator coaxially arranged with the rotor, wherein the rotor is accommodated in the inner cavity of the rotor fixing seat, the stator is embedded and installed in the stator mounting seat, the rotor is provided with a spiral structure along its axial direction, the inner diameter of the stator is clearance-matched with the outer diameter of the rotor, a liquid containing cavity is formed between the spiral structure of the rotor and the stator to contain liquid with medium and low viscosity, one end of the rotor is connected to the output end of the power component, and the power component is configured to drive the rotor to rotate so as to squeeze the liquid out of the needle.

5. The screw valve that is easy to disassemble and assemble according to claim 1, characterized in that: The rotor is an eccentric screw, one end of which is away from the stator is a metal flexible part wrapped with a rubber layer, and the other end close to the stator is a metal part, and the stator is a rubber part.

6. The screw valve for easy assembly and disassembly according to claim 4, characterized in that: The power assembly includes a servo motor, a reducer, a coupling and a connecting shaft which are sequentially connected in transmission. A sealing cavity is arranged between the coupling and the rotor fixing seat via an adapter seat. The connecting shaft is penetrated in the adapter seat, and one end of the connecting shaft is connected to the coupling, and the other end is connected to the rotor. The connecting shaft is sequentially arranged along the direction away from the coupling: a bearing, a retaining ring, a guide ring, a retaining frame and a first sealing ring for axial sealing. A second sealing ring for radial sealing is arranged at the connection between the adapter seat and the rotor fixing seat.

7. The screw valve for easy assembly and disassembly according to claim 1, characterized in that: A fixing block for installing a rubber cartridge is detachably mounted on one side of the rotor fixing seat, the fixing block is provided with a feed cavity, the rubber cartridge is mounted on the fixing block and the rubber cartridge is connected with the inner cavity of the rotor fixing seat through the feed cavity, and a heating unit is arranged at the bottom of the fixing block.

8. The screw valve for easy assembly and disassembly according to claim 7, characterized in that: A temperature detection unit is installed on the outer side of the heating unit.

9. The screw valve for easy assembly and disassembly according to claim 7, characterized in that: A cylindrical fixing frame is installed on the fixing block, the rubber tube is embedded in the cylindrical fixing frame, and the inner wall of the cylindrical fixing frame is also provided with a heat-insulating layer which can wrap the outer surface of the rubber tube.

10. The screw valve for easy assembly and disassembly according to claim 9, characterized in that: The cylindrical fixing frame has a longitudinal opening, an adjusting block is installed in the opening, an adjusting plate is installed on the adjusting block, a plurality of mounting positions are arranged on the adjusting block along the height direction, the mounting height of the adjusting plate is adjusted by installing the adjusting plate at different mounting positions, and a liquid level sensor for detecting the liquid level in the rubber cylinder is installed on the adjusting plate.

Images