An intelligent micro-metering screw valve for special dispensing and conveying equipment

Abstract

The present invention discloses an intelligent micro-metering screw valve for special equipment for dispensing and conveying, which relates to the technical field of liquid quantitative conveying. In view of the existing liquid discharge needle being installed by rotating through a thread, the thread will be worn after long-term replacement and use, causing the tightness of the connection to be affected, thereby reducing the accuracy of glue delivery, and the service life of the needle installed by the thread is short. Now, the following scheme is proposed, including a brushless motor and a motor sleeve, the top inner wall of the motor sleeve is fixedly installed with a brushless motor, the output end of the brushless motor is fixedly connected with a coupling, a driving shaft is provided below the coupling, a connecting rod is provided at the bottom of the driving shaft, and a screw rotor is fixedly connected to the bottom of the connecting rod. The present invention has a simple and novel structure, a small volume, high conveying accuracy, convenient needle installation and replacement, and high connection stability, thereby improving the stability of the discharge and extending the service life of the needle, and is suitable for promotion.

Description

Technical Field

[0001] The invention relates to the technical field of liquid quantitative delivery, and in particular to an intelligent micro-metering screw valve for special glue dispensing and delivery equipment. Background Art

[0002] The screw valve uses the rotation of the screw rotor to absorb and discharge liquid. Multiple sealed spaces are formed between the screw rotor and the rubber stator. As the screw rotor and the stator rotate and mesh, these sealed spaces are continuously formed at the suction end of the pump, and the liquid in the suction chamber is sealed therein. At the same time, the screw rotor is continuously pushed along the axial direction to the discharge end, and the liquid in the closed space is continuously discharged, thus completing the liquid delivery process. The intelligent micro-metering screw valve has the advantages of small size, light weight, high precision, smooth flow, no pulsation, fast back suction response, and no wire drawing. The liquid outlet needle of the existing screw valve is installed by threaded rotation, but the thread will wear out after long-term replacement and use, causing the tightness of the connection to be affected, thereby affecting the accuracy of the glue delivery. The threaded needle is short in service life. For this reason, we propose an intelligent micro-metering screw valve for special equipment for dispensing and delivery. Summary of the invention

[0003] The intelligent micro-metering screw valve for glue dispensing and delivery equipment proposed in the present invention solves the problems that the existing liquid outlet needle is installed by rotating through a thread, the thread will wear out after long-term replacement and use, causing the tightness of the connection to be affected, thereby reducing the accuracy of glue liquid delivery and shortening the service life of the needle installed by the thread.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The invention discloses an intelligent micro-metering screw valve for special equipment for dispensing and conveying, comprising a brushless motor and a motor sleeve, wherein a brushless motor is fixedly mounted on the top inner wall of the motor sleeve, a coupling is fixedly connected to the output end of the brushless motor, a driving shaft is arranged below the coupling, a connecting rod is arranged at the bottom of the driving shaft, a screw rotor is fixedly connected to the bottom of the connecting rod, a connecting seat is fixedly connected to the bottom of the motor sleeve, a feeding chamber is arranged on the top of the connecting seat, a screw stator is fixedly mounted on the bottom inner ring of the feeding chamber, a screw outlet is arranged at the bottom of the screw stator, a needle is connected to the bottom of the screw outlet, the needle is connected to the bottom of the screw stator through a fixing mechanism, the fixing mechanism comprises a guide rod, a groove is opened on the needle near the top of the screw stator, and the guide rod is welded to the inner wall of the groove, a guide sleeve is arranged on the outer ring sliding sleeve of the guide rod, a fixing rod is welded on one side of the guide sleeve, a positioning block is welded on one side of the fixing rod, and a bolt is arranged on the other side of the fixing rod.

[0006] Preferably, a movable cavity is opened on the bottom outer wall of the screw stator, a positioning groove is opened on the inner wall on one side of the movable cavity, and the positioning groove is adapted to the positioning block, a threaded hole is opened on the inner wall on the other side of the movable cavity, and the threaded hole is adapted to the bolt, and a push plate is welded to one end of the bolt close to the fixed rod.

[0007] Preferably, a compression spring is welded to one side of the guide sleeve, the other end of the compression spring is welded to the inner wall of the groove, the compression spring is sleeved on the outer ring of the guide rod, and the vertical section of the groove is a "U"-shaped structure.

[0008] Preferably, a plurality of sealing rings are fixedly bonded to the inner wall of one side of the needle head close to the screw stator, and the needle head is made of 304 stainless steel.

[0009] Preferably, the screw rotor is meshed with a screw stator, and a screw outlet is provided at the bottom of the screw stator, and a feed port is provided on one side wall of the feed chamber.

[0010] Preferably, a precision bearing is provided between the driving shaft and the connecting seat, a sealing member is installed below the precision bearing, and the sealing member is sleeved on the outer ring of the connecting rod.

[0011] 1. Compared with the existing technology, the beneficial effects of the present invention are as follows: the present invention is equipped with a brushless motor, a coupling, a drive shaft, a connecting rod, a screw rotor, a motor sleeve, a connecting seat, a feed chamber, a precision bearing, a seal, a feed port, a screw stator, a screw outlet and a needle and other structures, wherein the brushless motor rotates precisely, and the drive shaft is driven to rotate through the coupling to obtain torque, the material enters the material chamber from the feed port, the screw rotor rotates and meshes with the screw stator under the action of the connecting rod and the drive shaft to form a sealed space, a pressure difference is generated at the screw stator port, and then the material in the material chamber is sucked into the screw stator, the screw rotor and the screw stator are continuously rotated and meshed, the material is pushed forward and obtains a certain pressure, and is discharged at the outlet, completing the precise material transportation;

[0012] 2. Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention increases the length of the bolt penetrating the moving cavity by installing the sealing ring, the moving cavity, the bolt, the guide rod, the guide sleeve, the fixed rod, the positioning block and the extrusion spring and other structures through the rotation of the bolt, and moves the fixed rod and the positioning block through the movement of the bolt, so that the positioning block and the positioning groove are mutually adapted and installed, and the needle head and the bottom outlet of the screw stator are installed correspondingly through the installation of the positioning block, thereby improving the stability of the installation;

[0013] The present invention has a simple and novel structure, a small volume, high conveying accuracy, convenient needle installation and replacement, and high connection stability, thereby improving the stability of material discharge and extending the service life of the needle, and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view structural schematic diagram of an intelligent micro-metering screw valve for special glue dispensing and delivery equipment proposed by the present invention;

[0015] Figure 2 This is an enlarged schematic diagram of the structure at position A of an intelligent micro-metering screw valve for special glue dispensing and delivery equipment proposed by the present invention;

[0016] Figure 3 This is an enlarged schematic diagram of the structure at point B of an intelligent micro-metering screw valve for special glue dispensing and conveying equipment proposed by the present invention.

[0017] In the figure: 1 brushless motor, 2 coupling, 3 drive shaft, 4 connecting rod, 5 screw rotor, 6 motor sleeve, 7 connecting seat, 8 feed chamber, 9 precision bearing, 10 seal, 11 feed port, 12 screw stator, 13 screw outlet, 14 needle, 15 sealing ring, 16 moving chamber, 17 bolt, 18 guide rod, 19 guide sleeve, 20 fixing rod, 21 positioning block, 22 extrusion spring. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figure 1-3 , an intelligent micro-metering screw valve for special glue dispensing and conveying equipment, including a brushless motor 1 and a motor sleeve 6, the brushless motor 1 is fixedly installed on the top inner wall of the motor sleeve 6, the output end of the brushless motor 1 is fixedly connected with a coupling 2, a driving shaft 3 is arranged below the coupling 2, a connecting rod 4 is arranged at the bottom of the driving shaft 3, a screw rotor 5 is fixedly connected to the bottom of the connecting rod 4, a connecting seat 7 is fixedly connected to the bottom of the motor sleeve 6, a feeding chamber 8 is installed on the top of the connecting seat 7, a screw stator 12 is fixedly installed on the bottom inner ring of the feeding chamber 8, and a screw A screw outlet 13 is provided at the bottom of the stator 12, and a needle 14 is connected to the bottom of the screw outlet 13. The needle 14 is connected to the bottom of the screw stator 12 through a fixing mechanism. The fixing mechanism includes a guide rod 18. The needle 14 is provided with a groove near the top of the screw stator 12, and the guide rod 18 is welded to the inner wall of the groove. A guide sleeve 19 is provided on the outer ring sliding sleeve of the guide rod 18, a fixing rod 20 is welded to one side of the guide sleeve 19, a positioning block 21 is welded to one side of the fixing rod 20, and a bolt 17 is provided on the other side of the fixing rod 20.

[0020] In this embodiment, a movable cavity 16 is opened on the bottom outer wall of the screw stator 12, a positioning groove is opened on the inner wall on one side of the movable cavity 16, and the positioning groove is adapted to the positioning block 21, and a threaded hole is opened on the inner wall on the other side of the movable cavity 16, and the threaded hole is adapted to the bolt 17, and a push plate is welded to one end of the bolt 17 close to the fixed rod 20.

[0021] In this embodiment, a squeeze spring 22 is welded to one side of the guide sleeve 19, and the other end of the squeeze spring 22 is welded to the inner wall of the groove. The squeeze spring 22 is sleeved on the outer ring of the guide rod 18, and the vertical section of the groove is a "U"-shaped structure.

[0022] In this embodiment, a plurality of sealing rings 15 are fixedly bonded to the inner wall of the needle head 14 on one side close to the screw stator 12 , and the needle head 14 is made of 304 stainless steel.

[0023] In this embodiment, the screw rotor 5 is meshed with the screw stator 12 , and a screw outlet 13 is provided at the bottom of the screw stator 12 , and a feed port 11 is opened on one side wall of the feed chamber 8 .

[0024] In this embodiment, a precision bearing 9 is provided between the driving shaft 3 and the connecting seat 7 , a sealing member 10 is installed below the precision bearing 9 , and the sealing member 10 is sleeved on the outer ring of the connecting rod 4 .

[0025] In this embodiment, firstly, this scheme adopts a brushless motor 1, which is suitable for conveying high-density liquids and has high precision. The brushless motor 1 is precisely rotated by a signal input through specific programming data, and the drive shaft 3 is driven to rotate through the coupling 2 to obtain torque. The material enters the feed chamber 8 from the feed port 11, and the screw rotor 5 is rotated and meshed with the screw stator 12 under the action of the connecting rod 4 and the drive shaft 3 to form a sealed space. A pressure difference is generated at the port of the screw stator 12, and then the material in the feed chamber 8 is sucked into the inside of the screw stator 12, and the screw rotor 5 The material is pushed forward and obtains a certain pressure by the continuous rotation of the screw stator 12, and is discharged through the screw outlet 13 to complete the precise material delivery. When the needle 14 is replaced, the bolt 17 is rotated, and the bolt 17 moves to the outside of the moving cavity 16 through the threaded hole. At this time, the fixed rod 20 moves to the side close to the bolt 17 under the rebound of the extrusion spring 22. At this time, the fixed rod 20 slides on the guide rod 18 through the guide sleeve 19. When the positioning block 21 is disengaged from the positioning groove, the needle 14 is pulled to make the needle 14 disengage from one end of the screw stator 12 to complete the disassembly of the needle 14. Similarly, the needle 14 is installed after cleaning, and the needle 14 is sleeved on the outer ring of the end of the screw stator 12 and pressed into the moving cavity 16. At this time, the bolt 17 is rotated, and the length of the bolt 17 extending into the moving cavity 16 becomes longer, and the fixed rod 20 is squeezed, so that the positioning block 21 is adapted to engage with the positioning groove, and the rotation of the bolt 17 is stopped to complete the installation of the needle 14.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent micro metering screw valve for special glue dispensing and conveying equipment, comprising a brushless motor (1) and a motor sleeve (6), characterized in that: A brushless motor (1) is fixedly mounted on the inner wall of the top of the motor sleeve (6); a coupling (2) is fixedly connected to the output end of the brushless motor (1); a drive shaft (3) is provided below the coupling (2); a connecting rod (4) is provided at the bottom of the drive shaft (3); a screw rotor (5) is fixedly connected to the bottom of the connecting rod (4); a connecting seat (7) is fixedly connected to the bottom of the motor sleeve (6); a feed chamber (8) is mounted on the top of the connecting seat (7); a screw stator (12) is fixedly mounted on the inner ring of the bottom of the feed chamber (8); a screw outlet (13) is provided at the bottom of the screw stator (12). ), the bottom of the screw outlet (13) is connected to a needle (14), the needle (14) is connected to the bottom of the screw stator (12) via a fixing mechanism, the fixing mechanism comprises a guide rod (18), the needle (14) is provided with a groove near the top of the screw stator (12), and the guide rod (18) is welded to the inner wall of the groove, the outer ring sliding sleeve of the guide rod (18) is provided with a guide sleeve (19), one side of the guide sleeve (19) is welded with a fixing rod (20), one side of the fixing rod (20) is welded with a positioning block (21), and the other side of the fixing rod (20) is provided with a bolt (17); A movable cavity (16) is provided on the bottom outer wall of the screw stator (12); a positioning groove is provided on one inner wall of the movable cavity (16), and the positioning groove is matched with the positioning block (21); a threaded hole is provided on the other inner wall of the movable cavity (16), and the threaded hole is matched with the bolt (17); a push plate is welded to one end of the bolt (17) close to the fixing rod (20); A squeeze spring (22) is welded to one side of the guide sleeve (19), and the other end of the squeeze spring (22) is welded to the inner wall of the groove. The squeeze spring (22) is sleeved on the outer ring of the guide rod (18), and the vertical section of the groove is a "U"-shaped structure; A precision bearing (9) is provided between the driving shaft (3) and the connecting seat (7), a sealing member (10) is installed below the precision bearing (9), and the sealing member (10) is sleeved on the outer ring of the connecting rod (4).

2. The intelligent micro metering screw valve for glue dispensing and conveying equipment according to claim 1 is characterized in that: A plurality of sealing rings (15) are fixedly bonded to the inner wall of one side of the needle head (14) close to the screw stator (12), and the needle head (14) is made of 304 stainless steel.

3. The intelligent micro metering screw valve for glue dispensing and conveying equipment according to claim 1 is characterized in that: The screw rotor (5) is meshed with the screw stator (12), and a screw outlet (13) is provided at the bottom of the screw stator (12). A feed port (11) is provided on one side wall of the feed chamber (8).

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