Screw valve mounting structure and screw valve

Abstract

The invention discloses a screw valve mounting structure and a screw valve, and relates to the technical field of screw valves, the screw valve mounting structure comprises a valve body, a screw structure and a positioning assembly, a mounting cavity is formed in the valve body, and a first channel and a second channel are formed in the circumferential direction of the valve body at intervals; the screw structure is mounted in the mounting cavity, a first pit and a second pit are formed in the outer side wall of the screw structure, the first pit corresponds to the first channel, and the second pit corresponds to the second channel; the positioning assembly comprises a positioning piece, a fastening piece and a rotating piece, the positioning piece is elastically installed in the first channel, and a part of the positioning piece extends out of the first channel to abut against the first pit in a matched mode; the fastener is arranged in the second channel, the rotating piece is arranged on the valve body, the peripheral wall of the rotating piece abuts against the fastener, and the rotating piece can rotationally push the fastener to enable the fastener to be provided with a first position separated from the second pit and a second position where part of the structure abuts against the second pit in a matched mode.

Description

Technical Field

[0001] The present invention relates to the technical field of screw valves, and particularly to a screw valve installation structure and a screw valve. Background Art

[0002] The screw valve for dispensing is a high-precision and high-efficiency automatic control device, which extrudes glue by rotating a screw around its own axis to achieve the dispensing operation, and is widely used in precision dispensing in fields such as electronics, automobiles, and medical treatment.

[0003] In the actual application process of the screw valve, due to the need to replace glue and other daily maintenance, it is necessary to frequently disassemble, clean, and replace vulnerable parts of the components of the screw valve. In the existing screw valve, the components are usually fixedly connected by screws. When disassembling and assembling the screw valve, a special screwdriver is required, and the disassembly and assembly are time-consuming and laborious. Sometimes, due to space limitations, all the parts of the entire valve body need to be disassembled. Therefore, after multiple disassembly operations, it is extremely easy for the screws to become stripped, affecting the fixing effect, thus causing the positioning position to change, affecting the positioning accuracy, and ultimately having an adverse impact on the normal dispensing use of the screw valve and the dispensing quality of the screw valve. Summary of the Invention

[0004] The main purpose of the present invention is to propose a screw valve installation structure and a screw valve, aiming to improve the convenience of disassembling and assembling the screw valve.

[0005] To achieve the above object, the screw valve installation structure proposed by the present invention includes:

[0006] A valve body, the valve body forms an installation cavity, and a first channel and a second channel are circumferentially spaced on the valve body;

[0007] A screw structure, the screw structure is installed in the installation cavity, and first and second pits are formed on the outer side wall of the screw structure. The first pit corresponds to the first channel, and the second pit corresponds to the second channel;

[0008] A positioning assembly, the positioning assembly includes a positioning member, a fastening member, and a rotating member. The positioning member is elastically installed in the first channel, and a part of the structure extends out of the first channel and abuts and cooperates with the first pit; the fastening member is arranged in the second channel, the rotating member is arranged on the valve body, the outer peripheral wall of the rotating member abuts against the fastening member, and can rotate to push the fastening member to have a first position where it disengages from the second pit, and a second position where a part of the structure abuts and cooperates with the second pit.

[0009] In one embodiment, the positioning member and the fastener are both spheres, and a groove structure is formed on the peripheral wall of the rotating member. The groove structure extends along the circumference of the rotating member, and the depth of the groove structure gradually increases / decreases. The fastener is clamped in the mounting groove and can move relatively along the mounting groove as the rotating member rotates. When the fastener is in the first position, the fastener is located at the deepest part of the groove structure. When the fastener is in the second position, the fastener is located at the shallowest part of the groove structure.

[0010] In one embodiment, the positioning assembly further includes a baffle, a first elastic member and a second elastic member, the baffle being connected to the side wall of the valve body, the first elastic member being arranged in the first channel, the first elastic member having two axial sides respectively abutting against the baffle and the positioning member, and the second elastic member having two axial sides respectively abutting against the rotating member and the baffle.

[0011] In one embodiment, the positioning assembly further includes a lever connected to an end of the rotating member away from the blocking plate, so as to drive the rotating member to rotate relative to the valve body.

[0012] In one embodiment, the screw structure comprises:

[0013] A stator assembly, the stator assembly comprising a stator outer shell and a stator liner, the stator outer shell being sleeved on an outer peripheral wall of the stator liner, and the first recess and the second recess being provided on a side wall of the stator outer shell;

[0014] a screw, the screw being inserted into the axial hole of the stator liner and being rotatable relative to the stator liner;

[0015] A connecting assembly includes a first nut, a second nut and a connecting component, the first nut and the second nut are respectively screwed to the two axial ends of the stator outer shell, the connecting component is sleeved on the screw and arranged on the stator outer shell, and the two axial sides of the connecting component are respectively abutted against the first nut and the stator liner.

[0016] In one embodiment, the connecting component includes a backing ring and a first washer connected to each other, the backing ring abuts against the first nut at a side facing away from the first washer, and the first washer abuts against the stator liner at a side facing away from the backing ring.

[0017] In one embodiment, the connecting component includes a sealed bearing, a second gasket and a rotary pan seal that abut against each other in sequence, the sealed bearing abuts against the first nut on a side facing away from the second gasket, and the rotary pan seal abuts against the stator liner on a side facing away from the second gasket.

[0018] In one embodiment, the screw structure further includes a runner assembly, the runner assembly includes a runner member and a glue inlet nozzle, through holes are formed in the side walls of both the stator outer sleeve and the stator inner lining, and the two ends of the runner member in the length direction are respectively communicated with the glue inlet nozzle and the through holes.

[0019] In one embodiment, the screw structure further includes a plug, the glue inlet nozzle is connected to the side wall of the runner member, and the plug is inserted into the runner member along the length direction of the runner member to block the end of the runner member.

[0020] The present invention also provides a screw valve, the screw valve includes a screw valve mounting structure, and the screw valve mounting structure includes:

[0021] A valve body, the valve body forms an installation cavity, and a first channel and a second channel are circumferentially spaced apart from each other on the valve body;

[0022] A screw structure, the screw structure is installed in the installation cavity, and a first pit and a second pit are formed on the outer side wall of the screw structure, the first pit corresponds to the first channel, and the second pit corresponds to the second channel;

[0023] A positioning assembly, the positioning assembly includes a positioning member, a fastening member and a rotating member, the positioning member is elastically installed in the first channel, and a part of the structure extends out of the first channel and abuts and cooperates with the first pit; the fastening member is arranged in the second channel, the rotating member is arranged on the valve body, the outer peripheral wall of the rotating member abuts against the fastening member, and can rotate to push the fastening member to have a first position where it disengages from the second pit, and a second position where a part of the structure abuts and cooperates with the second pit.

[0024] The technical solution of the present invention proposes a screw valve installation structure, which includes a valve body, a screw structure and a positioning component. The installation cavity of the valve body provides a stable installation space for the screw structure, while the first channel and the second channel arranged at circumferential intervals provide necessary positions for the installation and operation of the positioning component. The outer side wall of the screw structure is designed with a first pit and a second pit, which correspond to the first channel and the second channel respectively, making the installation of the screw structure in the valve body more precise, and avoiding problems such as poor sealing or inflexible operation caused by position deviation. The positioning piece in the positioning component is elastically installed in the first channel, and part of the structure extends out and abuts against the first pit, realizing the preliminary axial positioning of the screw structure and preventing excessive displacement during the installation process. The fastener is arranged in the second channel, and the rotating piece is arranged on the valve body. By rotating the rotating piece, the fastener is pushed to switch between the first position and the second position. When the fastener is in the first position, it disengages from the second pit, facilitating the installation or disassembly of the screw structure; when in the second position, part of the structure abuts against the second pit to realize the fastening of the screw structure, ensuring the stable and reliable connection between the screw structure and the valve body during use, and avoiding the loosening of the screw structure caused by vibration or pressure change, thus ensuring the overall performance and service life of the screw valve. Through the screw valve installation structure of this solution, during installation, first, the fastener is disengaged from the second pit to facilitate the positioning and installation of the screw structure through the positioning piece and the first pit. And because the first positioning piece is elastically installed in the first channel, when the positioning piece cooperates with the first pit, a collision sound will be generated to prompt the operator for further operation. Then, by rotating the rotating piece, the fastener is pushed to cooperate with the second pit to realize the fastening connection between the screw structure and the valve body. This not only ensures the fastening effect of the installation connection of the screw valve, improves the convenience of disassembly and assembly, and does not require screw fastening during the disassembly and assembly process, avoiding screw thread slipping or damage to the valve body thread hole during multiple disassembly and assembly processes, but also helps to improve the service life of the screw valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0026] Figure 1 Schematic three-dimensional structure diagram of an embodiment of the screw valve provided by the present invention;

[0027] Figure 2 is Figure 1 rear view schematic diagram of the screw valve in

[0028] Figure 3 isFigure 2 Schematic cross-sectional view at position A-A;

[0029] Figure 4 Explosion schematic diagram of the screw valve installation structure provided by the present invention;

[0030] Figure 5 is Figure 4 Schematic structural diagram of the rotating part in ;

[0031] Figure 6 is Figure 5 Schematic structural diagram of the rotating part from another perspective in ;

[0032] Figure 7 Stereoscopic structural diagram of the first embodiment of the screw structure provided by the present invention;

[0033] Figure 8 is Figure 7 Cross-sectional schematic diagram of the screw structure in ;

[0034] Figure 9 Stereoscopic structural diagram of the second embodiment of the screw structure provided by the present invention;

[0035] Figure 10 is Figure 9 Cross-sectional schematic diagram of the screw structure in ;

[0036] Figure 11 Stereoscopic structural diagram of the third embodiment of the screw structure provided by the present invention;

[0037] Figure 12 is Figure 11 Cross-sectional schematic diagram of the screw structure in.

[0038] Explanation of the reference numerals in the drawings:

[0039] 100, Screw Valve; 10, Screw Valve Mounting Structure; 1, Valve Body; 11, Mounting Chamber; 2, Screw Structure; 21, Stator Assembly; 211, Stator Outer Sleeve; 2111, First Concave Pit; 2112, Second Concave Pit; 212, Stator Inner Lining; 22, Screw; 23, Connection Assembly; 231, First Nut; 232, Second Nut; 233, Connection Component; 2331a, Spacer Ring; 2331b, First Gasket; 2332a, Sealing Bearing; 2332b, Second Gasket; 2332c, Rotary V-seal; 24, Flow Channel Assembly; 241, Flow Channel Part; 242, Glue Inlet Nozzle; 243, Plug; 3, Positioning Assembly; 31, Positioning Part; 32, Fastening Component; 33, Rotating Part; 331, Groove Structure; 34, Flap; 35, First Elastic Part; 36, Second Elastic Part; 37, Lever; 40, Driving Assembly; 401, Driving Part; 402, Coupling; 403, Adapter Shaft; 50, Mounting Base; 60, Syringe Assembly; 601, Syringe; 602, Syringe Mounting Bracket.

[0040] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific Embodiments

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if the embodiments of the present invention involve descriptions such as "first" and "second", the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] The screw valve for dispensing glue is a high-precision and high-efficiency automatic control device. It extrudes the glue by rotating the screw around its own axis to achieve the dispensing operation, and is widely used in precision dispensing in fields such as electronics, automotive, and medical.

[0045] In the actual application process of the screw valve, due to the need to replace the glue and other daily maintenance, it is necessary to frequently disassemble, clean, and replace the vulnerable parts of the screw valve components. In the existing screw valve, the components are usually fixedly connected by screws. When disassembling and assembling the screw valve, a special screwdriver is required, and the disassembly and assembly are time-consuming and laborious. Sometimes, due to space limitations, all the parts of the entire valve body need to be disassembled. Therefore, after multiple disassembly operations, it is extremely easy for the screws to slip, affecting the fixing effect, thus changing the positioning position, affecting the positioning accuracy, and ultimately having an adverse impact on the normal dispensing use of the screw valve and the dispensing quality of the screw valve.

[0046] To solve the above problems, please refer to Figures 1 to 4, the present invention provides a screw valve installation structure 10, which includes a valve body 1, a screw structure 2 and a positioning component 3. The valve body 1 forms an installation cavity 11, and a first channel and a second channel are circumferentially spaced on the valve body 1; the screw structure 2 is installed in the installation cavity 11, and a first pit 2111 and a second pit 2112 are formed on the outer side wall of the screw structure 2. The first pit 2111 corresponds to the first channel, and the second pit 2112 corresponds to the second channel; the positioning component 3 includes a positioning member 31, a fastening member 32 and a rotating member 33. The positioning member 31 is elastically installed in the first channel, and part of its structure extends out of the first channel and abuts and cooperates with the first pit 2111; the fastening member 32 is arranged in the second channel, the rotating member 33 is arranged on the valve body 1, the outer peripheral wall of the rotating member 33 abuts against the fastening member 32, and can rotate to push the fastening member 32 to have a first position where it disengages from the second pit 2112, and a second position where part of its structure abuts and cooperates with the second pit 2112.

[0047] The technical solution of the present invention proposes a screw valve installation structure 10, including a valve body 1, a screw structure 2, and a positioning component 3. The installation cavity 11 of the valve body 1 provides a stable installation space for the screw structure 2, while the circumferentially spaced first channel and second channel provide necessary positions for the installation and operation of the positioning component 3. The outer sidewall of the screw structure 2 is designed with a first pit 2111 and a second pit 2112, which respectively correspond to the first channel and the second channel, making the installation of the screw structure 2 in the valve body 1 more precise and avoiding problems such as poor sealing or inflexible operation caused by position deviation. The positioning member 31 in the positioning component 3 is elastically installed in the first channel, and a part of the structure extends out and abuts against the first pit 2111, realizing the preliminary axial positioning of the screw structure 2 and preventing it from undergoing excessive displacement during the installation process. The fastener 32 is arranged in the second channel, and the rotating member 33 is arranged on the valve body 1. By rotating the rotating member 33, the fastener 32 is pushed to switch between a first position and a second position. When the fastener 32 is in the first position, it disengages from the second pit 2112, facilitating the installation or disassembly of the screw structure 2; when in the second position, a part of the structure abuts against the second pit 2112 to realize the fastening of the screw structure 2, ensuring the stable and reliable connection between the screw structure 2 and the valve body 1 during use, avoiding loosening of the screw structure 2 caused by vibration or pressure change, and thus guaranteeing the overall performance and service life of the screw valve 100. Through the screw valve installation structure 10 of this solution, during installation, first make the fastener 32 disengage from the second pit 2112 to facilitate the positioning installation of the screw 22 assembly through the positioning member 31 and the first pit 2111. And since the first positioning member 31 is elastically installed in the first channel, when the positioning member 31 cooperates with the first pit 2111, a collision sound will be generated to prompt the operator for further operation. Then, by rotating the rotating member 33, the fastener 32 is pushed to cooperate with the second pit 2112 to realize the fastening connection between the screw structure 2 and the valve body 1. This not only ensures the fastening effect of the installation connection of the screw valve 100, improves the convenience of disassembly and assembly, and does not require screw fastening during the disassembly and assembly process, avoiding screw slipping or damage to the valve body thread holes during multiple disassembly and assembly processes, but also helps to improve the service life of the screw valve 100.

[0048] In an optional embodiment, to facilitate the installation and cooperation of the positioning member 31 and the fastener 32, please refer to Figures 4 to 6 , the positioning member 31 and the fastener 32 are both spheres. The circumferential wall of the rotating member 33 forms a groove structure 331, the groove structure 331 extends along the circumferential direction of the rotating member 33, and the depth of the groove structure 331 gradually increases / decreases. The fastener 32 is clamped in the installation groove and can move relative to the installation groove along with the rotation of the rotating member 33. When the fastener 32 is in the first position, the fastener 32 is located at the deepest part of the groove structure 331. When the fastener 32 is in the second position, the fastener 32 is located at the shallowest part of the groove structure 331.

[0049] In the actual design process, the fastener 32 and the positioning member 31 can also be rod-shaped structures with ball-shaped ends. The linear movement of the fastener 32 in the first channel is realized through the abutment of the elastic member, so as to realize the cooperation and separation between the positioning member 31 and the first pit 2111; and the cooperation and separation with the second pit 2112 are realized by rotating the rotating member 33 to push the fastener 32, so that the disassembly and assembly of the screw valve 100 can also be realized. In this embodiment, in order to improve the smoothness of the cooperation between the positioning member 31 and the first pit 2111 and between the fastener 32 and the second pit 2112, both the positioning member 31 and the fastener 32 are designed as spheres. This shape not only facilitates installation and movement in the channel, but also ensures a tight fit with the pit, improving the reliability of positioning and fastening. The groove structure 331 formed on the circumferential wall of the rotating member 33 extends circumferentially and the depth gradually changes, providing a guiding path for the movement of the fastener 32, so that the fastener 32 is always within the groove structure 331 during rotation, avoiding the situation that the fastener 32 is separated from the rotating member 33. The fastener 32 is clamped in the installation groove and moves relative to the installation groove along with the rotation of the rotating member 33, realizing the switching of the fastener 32 between the first position and the second position. When the fastener 32 is in the first position, it is at the deepest part of the groove structure 331. At this time, the fastener 32 is separated from the second pit 2112, facilitating the installation or disassembly of the screw structure 2; when the fastener 32 is in the second position, it is at the shallowest part of the groove structure 331, and part of the structure abuts and cooperates with the second pit 2112 to complete the fastening of the screw structure 2. In the design cooperation process, since the depth of the groove structure 331 on the side wall of the rotating member 33 gradually changes, when the fastener 32 is at different positions within the groove structure 331, the distance between the fastener 32 and the second pit 2112 is different. When the rotating member 33 rotates to the deepest part of the groove structure 331 where the fastener 32 is located, the fastener 32 is separated from the second pit 2112, so as to facilitate the installation of the screw structure 2 into the valve body 1. After installation, rotate the rotating member 33 in the reverse direction to make the fastener 32 gradually cooperate with the shallowest part of the groove structure 331. At this time, the fastener 32 abuts and cooperates with the second pit 2112 correspondingly, ensuring the stability of the connection between the valve body 1 and the screw structure 2. This design cleverly utilizes the rotational movement of the rotating member 33 to simplify the complex fastening operation into a simple rotation action, improving the convenience and efficiency of the operation, while ensuring the stability and reliability of the fastener 32 at different positions, further enhancing the overall performance of the screw valve installation structure 10. In this embodiment, the groove structure 331 is opened on the side wall of the rotating member 33 to cooperate and abut with the fastener 32 to achieve the tightening and loosening effect. In other embodiments, the rotating member 33 can also be a cam structure similar to an eccentric shaft, and the tightening and loosening connection between the screw structure 2 and the valve body 1 is realized through the corresponding cooperation between the cam structure and the fastener 32. Specifically, it can be selected according to actual needs and will not be specifically limited here.In addition, to prevent the positioning member 31 and the fastening member 32 from disengaging from the first channel and the second channel, please refer to. Figure 3 , a limiting structure is formed at one end of the first channel and the second channel close to the installation cavity 11. The limiting structure cooperates with the positioning member 31 and the fastening member 32 correspondingly, so that partial structures of the positioning member 31 and the fastening member 32 can cooperate with the first pit 2111 and the second pit 2112 correspondingly, and will not disengage from the first channel and the second channel, ensuring the stability of the positioning member 31 and the fastening member 32 within the screw valve 100.

[0050] In an optional embodiment, to facilitate the movable cooperation of the positioning assembly 3, please refer to Figures 1 to 4 , the positioning assembly 3 further includes a retaining piece 34, a first elastic member 35 and a second elastic member 36. The retaining piece 34 is connected to the side wall of the valve body 1. The first elastic member 35 is arranged in the first channel. The two axial sides of the first elastic member 35 respectively abut against the retaining piece 34 and the positioning member 31. The two axial sides of the second elastic member 36 respectively abut against the rotating member 33 and the retaining piece 34.

[0051] The retaining piece 34 is connected to the side wall of the valve body 1, providing an installation fulcrum for the first elastic member 35 and the second elastic member 36. The first elastic member 35 is arranged in the first channel, and its two axial sides respectively abut against the retaining piece 34 and the positioning member 31. This setting enables the positioning member 31 to have a certain elastic pre-tightening force in the first channel, which can better adapt to the installation and small displacements of the screw structure 2, ensure the tight fit between the positioning member 31 and the first pit 2111, and improve the positioning accuracy and stability. The second elastic member 36 is sleeved on the rotating member 33, and its two axial sides respectively abut against the rotating member 33 and the retaining piece 34. The setting of the second elastic member 36 provides a pre-tightening force for the rotating member 33, so that the rotating member 33 can remain stationary no matter what state it rotates to, and will not loosen during the working process and cause the screw structure 2 to fall off from the valve body 1. The addition of this elastic structure not only improves the operation convenience of the positioning assembly 3, but also enhances the stability and reliability of the entire system, ensuring the stable performance of the screw valve 100 during long-term use. Optionally, in this embodiment, both the first elastic member 35 and the second elastic member 36 are springs. In other embodiments, the first elastic member 35 and the second elastic member 36 can also be elastic gasket or cushion block structures, which can be specifically selected according to actual needs.

[0052] In an optional embodiment, to facilitate the rotation of the rotating member 33, please refer to Figures 1 to 4The positioning assembly 3 also includes a lever 37, which is connected to the end of the rotating member 33 away from the baffle 34 to rotate the rotating member 33 relative to the valve body 1. The lever 37 is connected to the end of the rotating member 33 away from the baffle 34, providing an operator with a convenient point of force application. By shifting the lever 37, the rotating member 33 can be easily rotated relative to the valve body 1, thereby switching the fastener 32 between the first position and the second position. This design significantly improves the convenience and flexibility of operation, especially in some working conditions where space is limited or frequent operations are required. The operator can complete the installation, removal, and tightening operations of the screw structure 2 without using complex tools or applying excessive force, greatly improving work efficiency and reducing labor intensity. At the same time, the presence of the lever 37 also helps to achieve precise control of the operation, avoiding problems such as poor fit between the fastener 32 and the pit due to excessive rotation or failure to position, further improving the performance and reliability of the screw valve mounting structure 10, making it easier to promote and apply in actual production. In actual application, the angle of the lever 37 relative to the valve body 1 can be marked. For example, when the fastener 32 is in the first position and the second position respectively, the angle of the lever 37 relative to the valve body 1 is marked. In this way, during the disassembly and assembly process, the matching status of the fastener 32 and the second pit 2112 can be judged by the angle of the lever 37. When the screw 22 assembly is installed on the valve body 1, the lever 37 is rotated 90 degrees counterclockwise to tighten the fastener 32, thereby realizing the installation of the screw valve 100 and ensuring the stability of the connection between the screw structure 2 and the valve body 1. In other embodiments, the stroke of the shift lever 37 may also be other angles, which can be selected according to actual needs and are not specifically limited here.

[0053] In an alternative embodiment, please refer to Figure 7 and Figure 8, the screw structure 2 includes a stator assembly 21, a screw 22, and a connection assembly 23. The stator assembly 21 includes a stator outer sleeve 211 and a stator inner lining 212. The stator outer sleeve 211 is sleeved on the outer peripheral wall of the stator inner lining 212. A first pit 2111 and a second pit 2112 are provided on the side wall of the stator outer sleeve 211. The screw 22 is inserted into the axial hole of the stator inner lining 212 and can rotate relative to the stator inner lining 212. The connection assembly 23 includes a first nut 231, a second nut 232, and a connection member 233. The first nut 231 and the second nut 232 are respectively screwed to the two axial ends of the stator outer sleeve 211. The connection member 233 is sleeved on the screw 22 and is arranged on the stator outer sleeve 211. The two axial sides of the connection member 233 are respectively abutted against the first nut 231 and the stator inner lining 212.

[0054] This split design facilitates the separate processing and assembly of the screw structure 2, improving the flexibility and precision of manufacturing. The first pit 2111 and the second pit 2112 are provided on the side wall of the stator outer sleeve 211, corresponding to the first channel and the second channel of the valve body 1, ensuring the accurate positioning and fastening of the screw structure 2 within the valve body 1. The screw 22 is inserted into the axial hole of the stator inner lining 212 and can rotate relative to the stator inner lining 212, realizing the rotational drive function of the screw 22 and facilitating the conveyance of fluids such as colloids through the rotation of the screw 22. The connection assembly 23 includes a first nut 231, a second nut 232, and a connection member 233. The first nut 231 and the second nut 232 are respectively screwed to the two axial ends of the stator outer sleeve 211, forming a stable connection structure. The connection member 233 is sleeved on the screw 22 and is arranged on the stator outer sleeve 211. Its two axial sides are respectively abutted against the first nut 231 and the stator inner lining 212. This multi-layer connection design helps to improve the stability of the screw valve 100, ensuring the reliable operation of the screw valve 100 under harsh working conditions such as high pressure or corrosive fluids, extending the service life of the equipment, and reducing the maintenance cost.

[0055] In an alternative embodiment, please refer to Figure 7 and Figure 8The connecting component 233 includes a gasket 2331a and a first gasket 2331b that are connected to each other. The side of the gasket 2331a facing away from the first gasket 2331b abuts against the first nut 231, and the side of the first gasket 2331b facing away from the gasket 2331a abuts against the stator lining 212. Specifically, the gasket 2331a and the stator lining 212 are both made of metal. The setting of the gasket 2331a realizes relative fixation with the screw 22 and completes the axial installation and positioning of the screw 22 in the screw structure 2; the first gasket 2331b is a plastic part, and its main function is lubrication to reduce the friction between the gasket 2331a and the stator lining 212. The sealing of the screw 22 and the stator lining 212 mainly relies on controlling the gap between the guide part of the screw 22 and the stator lining 212 to complete the rotation and sealing functions. For details, please refer to Figure 8 At the top of the screw 22 where it mates with the stator liner 212, there's a section without threads. By controlling the diameter of the stator liner 212 aperture and the shaft diameter of the screw 22 during manufacturing and assembly, the screw can rotate within the stator liner 212 while also achieving a certain degree of sealing, preventing fluid leakage. This structure eliminates the need for a separate flood seal assembly, reduces consumables, and helps lower maintenance costs during dispensing production.

[0056] In an alternative embodiment, please refer to Figure 9 and Figure 10 The connecting component 233 includes a sealed bearing 2332a, a second gasket 2332b, and a rotating variseal 2332c, which are sequentially abutted. The side of the sealed bearing 2332a facing away from the second gasket 2332b abuts the first nut 231, while the side of the rotating variseal 2332c facing away from the second gasket 2332b abuts the stator liner 212. Specifically, the rotating variseal 2332c seals the screw 22 and the stator housing 211, effectively preventing fluid leakage. The second gasket 2332b is made of plastic to prevent direct friction between the screw 22 and the rotating variseal 2332c. The bearing guides the rotation of the screw 22. The bearings are sealed with end caps that have a built-in sealing effect. The sealed end caps on both sides of the bearing prevent dirt from entering the bearing balls, affecting the movement and life of the sealed bearing 2332a. Through the synergistic effect of different components, the screw valve 100 is ensured to maintain a zero leakage state during long-term operation, thereby improving the safety and environmental protection of the production process, reducing material losses and equipment maintenance frequency caused by leakage, and is particularly suitable for industries such as fine chemicals, pharmaceuticals, and electronics that have extremely high requirements for sealing performance.

[0057] Further, there are at least two sealed bearings 2332a, and the sealed bearings 2332a are axially abutted in sequence. The side wall of the stator outer sleeve 211 is provided with glue overflow holes, and the glue overflow holes are located at the position of the rotating lip seal 2332c in the height of the stator outer sleeve 211. This design of the multi-layer sealed bearing 2332a further enhances the sealing effect, can effectively cope with the sealing challenges under extreme working conditions such as high pressure and high temperature, and prevents fluid from leaking from the gap between the screw 22 and the stator outer sleeve 211. The side wall of the stator outer sleeve 211 is provided with glue overflow holes, and the glue overflow holes are located at the position of the rotating lip seal 2332c in the height of the stator outer sleeve 211. When the fluid pressure is too high or the connecting component 233 is slightly worn, the glue overflow holes can discharge the leaked fluid in time, avoid the accumulation of fluid inside the stator outer sleeve 211, and prevent the medium from flowing upward to the bearing part when the lip seal is damaged. Thus, it prevents equipment damage or safety accidents caused by pressure accumulation. Specifically, in this embodiment, the number of the sealed bearings 2332a is three. The more the number of the sealed bearings 2332a, the more accurate the axial positioning of the screw 22 assembly. In this way, even when the size of the connecting component 23 has a certain deviation, a high axial positioning accuracy can be ensured, and the tolerance of the screw structure 2 to the dimensional accuracy of the parts is improved. In other embodiments, the number of the sealed bearings 2332a can also be other numbers, which can be specifically selected according to actual needs and are not specifically limited here. The existence of the glue overflow holes provides convenience for the maintenance of the equipment. The operator can timely discover potential problems of the sealing system by observing whether there is fluid discharged from the glue overflow holes, conduct targeted maintenance and repair, improve the reliability and safety of the equipment operation, and reduce the maintenance cost and equipment downtime.

[0058] In an alternative embodiment, please refer to Figures 7 to 12 , the screw structure 2 further includes a flow channel assembly 24. The flow channel assembly 24 includes a flow channel member 241 and a glue inlet nozzle 242. Through holes are provided on the side walls of both the stator outer sleeve 211 and the stator inner liner 212. The two ends of the flow channel member 241 in the length direction are respectively communicated with the glue inlet nozzle 242 and the through holes.

[0059] The design of the runner assembly 24 provides a clear path for the fluid to flow inside the screw structure 2, enabling the fluid to smoothly enter from the glue inlet nozzle 242, pass through the runner part 241 and the through-hole, and finally reach the working area of the screw 22, achieving efficient fluid transportation. The setting of the runner part 241 not only optimizes the flow direction and velocity of the fluid, reduces the resistance and vortex phenomena during fluid transportation, improves the working efficiency of the screw structure 2, but also can prevent the fluid from staying and accumulating in the runner, reducing the risk of blockage and the difficulty of cleaning. It is especially suitable for transporting fluid media with high viscosity, easy to solidify or containing solid particles. At the same time, the independent design of the runner assembly 24 facilitates replacement or cleaning when needed, improves the maintainability and service life of the screw structure 2, and meets the diverse requirements of different production processes for fluid transportation.

[0060] In an alternative embodiment, please refer to Figures 7 to 10 , the screw structure 2 further includes a plug 243. The glue inlet nozzle 242 is connected to the side wall of the runner part 241, and the plug 243 is inserted into the runner part 241 along the length direction of the runner part 241 to block the end of the runner part 241. The design of the plug 243 can effectively prevent external impurities, dust, etc. from entering the inside of the runner when the screw structure 2 is not in use or needs maintenance, keep the runner clean and dry, avoid premature curing or deterioration of the fluid in the runner, and ensure the normal operation of the screw structure 2 when used next time. At the same time, the detachable design of the plug 243 enables the runner to be quickly opened when fluid needs to be transported, with simple and fast operation and not causing too much interruption time to the production process. In addition, the sealing performance of the plug 243 can also effectively prevent the fluid from leaking from the end of the runner part 241 during fluid transportation, further improving the overall sealing performance and reliability of the screw structure 2, and effectively ensuring production safety and economic benefits. Optionally, to further improve the sealing performance of the connection position of the plug 243, the connection part between the plug 243 and the runner can be sealed with a sealing element, and the sealing element can be a flexible washer or sealing ring.

[0061] In an alternative embodiment, to improve the sealing performance between the glue inlet nozzle 242 and the runner, the glue inlet nozzle 242 is coaxially connected to the runner, and a sealing ring is provided at the connection position. The coaxial connection method can ensure that the flow direction of the fluid when entering the runner is consistent with the axis of the runner, reducing the impact and turbulent flow phenomena when the fluid enters, and improving the stability and efficiency of fluid transportation. The setting of the sealing ring further enhances the sealing performance between the glue inlet nozzle 242 and the runner, effectively preventing the fluid from leaking from the connection, and ensuring the reliable operation of the screw structure 2 under high-pressure or high-flow conditions. At the same time, this design can also adapt to a certain degree of thermal expansion and mechanical vibration, improve the stability and service life of the connection, reduce the maintenance cost and equipment failure rate, and is especially suitable for production environments that require frequent start-stop or large changes in working conditions.

[0062] The following specifically describes three embodiments provided by the screw 22 assembly in this solution:

[0063] First embodiment:

[0064] Please refer to Figure 7 and Figure 8 , in this embodiment, the screw 22 is first positioned and connected to the spacer ring 2331a. The first gasket 2331b is placed in the inner cavity of the stator outer sleeve 211. The assembly formed by connecting the screw 22 and the spacer ring 2331a is placed on the upper end surface of the first gasket 2331b. By controlling the gap between the guiding part of the screw 22 and the stator inner lining 212, it can ensure that the screw 22 rotates while completing mechanical sealing. The first nut 231 is arranged on the upper end surface of the stator outer sleeve 211 to prevent the assembly formed by connecting the screw 22 and the spacer ring 2331a from moving upward under the action of the pressure in the inner cavity of the screw 22 assembly during the working process. The stator inner lining 212 is connected to the stator outer sleeve 211 with an interference fit. The first nut 231 is connected to the stator outer sleeve 211. The flow channel is connected to the stator outer sleeve 211, sealed by a sealing ring and fixed by a flow channel fastening screw. The plug 243 is connected to the side of the flow channel away from the stator outer sleeve 211 and sealed by a sealing ring. The glue inlet nozzle 242 is connected to the side of the flow channel close to the plug 243 and sealed by a sealing ring. The screw 22 assembly in this embodiment can meet the conditions of a certain pressure and rotational speed, and the screw 22 and the stator assembly 21 do not need to be coaxially positioned and rotated by means of bearings. Nor does it need to use a pantograph seal structure for sealing, which can prevent the medium from flowing upward. It reduces the use of vulnerable parts and the cost of regular maintenance.

[0065] Second embodiment:

[0066] Please refer to Figure 9 and Figure 10, in this embodiment, the rotating lip seal 2332c is arranged in the inner cavity of the stator outer sleeve 211 to complete the radial seal with the inner cavity of the stator outer sleeve 211 and the screw 22. The second gasket 2332b is arranged at the upper end of the rotating lip seal 2332c, and the screw 22 is arranged at the upper end of the second gasket 2332b. The screw 22 is coaxially positioned with respect to the stator outer sleeve 211 through three sealed bearings 2332a. The first nut 231 is arranged on the upper end face of the stator outer sleeve 211 to prevent the screw 22 and the three end - cover sealed bearings 2332a from moving upward under the pressure of the inner cavity of the screw 22 assembly during operation. The stator inner lining 212 is connected to the stator outer sleeve 211 with an interference fit. The flow channel is connected to the stator outer sleeve 211, sealed by an O - ring and fixed by flow - channel fastening screws. The plug 243 is connected to the side of the flow channel away from the stator outer sleeve 211 and sealed by an O - ring. The glue inlet nozzle 242 is connected to the side of the flow channel close to the plug 243 and sealed by an O - ring. The screw 22 assembly in this embodiment can meet the usage requirements of high speed and high pressure. At the same time, a glue overflow hole is added at the position of the rotating lip seal 2332c to prevent the medium from flowing upward to the bearing part when the rotating lip seal 2332c is damaged.

[0067] Third Embodiment:

[0068] Please refer to Figure 11 and Figure 12 , in this embodiment, the screw 22 is first positioned and connected with the spacer ring 2331a. The first gasket 2331b is placed in the inner cavity of the stator outer sleeve 211. The assembly formed by connecting the screw 22 and the spacer ring 2331a is placed on the upper end face of the first gasket 2331b. By controlling the clearance between the guiding part of the screw 22 and the stator inner lining 212, mechanical seal can be completed while the screw 22 rotates. The first nut 231 is arranged on the upper end face of the stator outer sleeve 211 to prevent the assembly formed by connecting the screw 22 and the spacer ring 2331a from moving upward under the pressure of the inner cavity of the screw 22 assembly during operation. The stator inner lining 212 is connected to the stator outer sleeve 211 with an interference fit. The second nut 232 is connected to the stator outer sleeve 211. The flow channel is connected to the stator outer sleeve 211, sealed by an O - ring and fixed by flow - channel fastening screws. The glue inlet nozzle 242 is connected to one end of the flow channel away from the stator outer sleeve 211 and sealed by an O - ring. In this embodiment, the first gasket 2331b, the screw 22, the stator inner lining 212, the second nut 232, the flow channel and the glue inlet nozzle 242 are all made of non - metallic materials. From the inlet of the glue inlet nozzle 242, through the flow channel and then into the inner cavity of the stator inner lining 212 to the outlet of the stator inner lining 212, the area where the medium flows through does not contact with metal materials, which can meet the requirements of anaerobic glue dispensing.

[0069] The present invention also provides a screw valve 100, which includes a screw structure 2, a driving assembly 40, and a syringe assembly 60. The output end of the driving assembly 40 is connected to one end of the screw structure 2 away from the second nut 232. The syringe assembly 60 includes a syringe 601 and a syringe mounting bracket 602. The syringe mounting bracket 602 is connected to the side wall of the valve body 1. An installation groove is formed at one end of the syringe mounting bracket 602 away from the valve body 1. The syringe 601 is clamped in the installation groove and fixed by screwing. The specific structure of the screw structure 2 refers to the above-mentioned embodiments. Since the screw valve 100 adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one. Among them, the valve body 1 forms an installation cavity 11, and the screw structure 2 is installed in the installation cavity 11, providing a stable installation foundation for the screw structure 2 to ensure that it will not be displaced or loosened during operation, thereby ensuring the overall stability and reliability of the screw valve 100. The output end of the driving assembly 40 is connected to one end of the screw 22 away from the second nut 232, providing a power source for the rotation of the screw 22, enabling the screw 22 to rotate stably in the stator assembly 21, and realizing the opening and closing actions of the screw valve 100. By organically combining the screw structure 2 with the valve body 1 and the driving assembly 40, a complete fluid control and conveying system is formed, which not only has precise flow control capabilities, but also can adapt to various complex working conditions and media, meeting the high-performance requirements of the screw valve 100 in multiple industrial fields such as packaging, dispensing, and injection molding, improving production efficiency and product quality, and reducing the equipment maintenance cost and operation risk. The design of the syringe mounting bracket 602 provides a stable installation position for the syringe 601 to ensure that the syringe 601 will not shake or loosen during the glue dispensing process, improving the stability and accuracy of the glue dispensing. The addition of the syringe assembly 60 enables the screw valve 100 to not only have precise flow control capabilities, but also achieve precise metering and conveying of fluid media such as colloids. At the same time, the connection method between the syringe mounting bracket 602 and the mounting seat 50, and the clamping and screwing fixation methods between the syringe 601 and the syringe mounting bracket 602 not only improve the installation reliability, but also facilitate the quick replacement and maintenance of the syringe 601, adapting to the diverse requirements of different production tasks for the specifications and types of the syringe 601, improving the versatility and flexibility of the equipment, and reducing the equipment procurement and maintenance costs of the enterprise. In this embodiment, the part of the syringe mounting bracket 602 for installing the syringe 601 is a semi-circular structure, and the syringe 601 is clamped laterally to the syringe mounting seat 50. In other embodiments, the installation part can also be designed as an annular structure. By inserting the syringe 601 downward into the annular structure, the annular structure is sleeved on the outer peripheral wall of the syringe 601, and the installation and fixation of the syringe 601 can also be achieved in this way, which can be specifically selected according to actual needs.

[0070] Furthermore, to facilitate the installation arrangement of the drive assembly 40, the screw valve 100 also includes a mounting seat 50. The drive assembly 40 includes a drive member 401, a coupling 402, and an adapter shaft 403 connected in sequence. The output end of the drive member 401 is connected to the coupling 402, and the end of the adapter shaft 403 away from the coupling 402 is connected to the screw 22. The drive member 401 is mounted on the mounting seat 50, and the valve body 1 is connected to the side of the mounting seat 50 facing away from the drive member 401. The setting of the mounting seat 50 provides a stable mounting base for the drive assembly 40, ensuring that the drive assembly 40 will not shake or shift during operation, thereby improving the overall stability and reliability of the screw valve 100. The drive assembly 40 includes a drive member 401, a coupling 402, and an adapter shaft 403 connected in sequence. This split design allows each component to be manufactured and assembled independently, improving production efficiency and maintenance convenience. The output end of the driver 401 is connected to the coupling 402, and the end of the adapter shaft 403 away from the coupling 402 is connected to the screw 22. This transmission chain design can effectively transmit power and ensure that the screw 22 rotates smoothly and accurately. The driver 401 is installed on the mounting base 50, and the valve body 1 is connected to the side of the mounting base 50 facing away from the driver 401. This layout not only optimizes the overall structure of the screw valve 100, making it more compact and reasonable, but also facilitates installation and maintenance in a limited space, reducing construction difficulty and cost. At the same time, this design also helps to improve the transmission efficiency of the screw valve 100, reduce energy loss, and extend the service life of the equipment.

[0071] Please refer to Figures 1 to 4 The following is a detailed description of the installation method of the screw valve 100 provided in this solution:

[0072] In the first step, the lever 37 is moved upward 90° to remove the fastener 32 from the second recess 2112;

[0073] The second step is to install the screw 22 assembly into the valve body until the positioning piece 31 falls into the first pit 2111 and emits a "click" sound indicating that the installation is in place:

[0074] Step 3: Move the lever 37 downward 90°, and the fastener 32 falls into the second recess 2112. The opposite ends of the fastener 32 abut against the second recess 2112 and the shallowest part of the groove structure 331 on the rotating member 33.

[0075] The fourth step is to place the syringe 601 to complete the assembly of the screw valve 100.

[0076] The quick-disassembly structure of the screw valve 100 in this solution only requires turning less than half a circle to complete the disassembly and assembly of the screw 22 assembly. The disassembly and assembly efficiency is high and no tools are required. At the same time, it avoids using screws to fasten to realize the connection of the screw valve 100, preventing the screw from slipping or the threaded hole of the valve body from being damaged during multiple disassembly and assembly processes, which helps to extend the service life of the screw valve 100.

[0077] The above is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A screw valve installation structure, characterized in that, include: A valve body, wherein the valve body is formed with a mounting cavity, and a first channel and a second channel are formed at intervals in the circumferential direction of the valve body; a screw structure, the screw structure being installed in the installation cavity, the outer side wall of the screw structure being formed with a first recess and a second recess, the first recess corresponding to the first channel, and the second recess corresponding to the second channel; A positioning assembly, the positioning assembly includes a positioning member, a fastener and a rotating member, the positioning member is elastically mounted on the first channel, and a portion of the structure extends out of the first channel and abuts against the first pit; the fastener is provided in the second channel, the rotating member is provided on the valve body, the outer peripheral wall of the rotating member abuts against the fastener, and can be rotated to push the fastener so that it has a first position disengaged from the second pit, and a second position in which a portion of the structure abuts against the second pit.

2. The screw valve installation structure according to claim 1, characterized in that The positioning member and the fastener are both spheres, and a groove structure is formed on the peripheral wall of the rotating member. The groove structure extends along the circumference of the rotating member, and the depth of the groove structure gradually increases / decreases. The fastener is clamped in the installation groove and can move relatively along the installation groove as the rotating member rotates. When the fastener is in the first position, the fastener is located at the deepest part of the groove structure. When the fastener is in the second position, the fastener is located at the shallowest part of the groove structure.

3. The screw valve installation structure according to claim 2, characterized in that, The positioning assembly also includes a baffle, a first elastic member and a second elastic member. The baffle is connected to the side wall of the valve body. The first elastic member is arranged in the first channel. The first elastic member has two axial sides respectively abutting the baffle and the positioning member. The second elastic member has two axial sides respectively abutting the rotating member and the baffle.

4. The screw valve installation structure according to claim 3, characterized in that, The positioning assembly further includes a shifting rod connected to an end of the rotating member away from the blocking plate so as to shift the rotating member to rotate relative to the valve body.

5. The screw valve installation structure according to any one of claims 1 to 4, characterized in that, The screw structure comprises: A stator assembly, the stator assembly comprising a stator outer shell and a stator liner, the stator outer shell being sleeved on an outer peripheral wall of the stator liner, and the first recess and the second recess being provided on a side wall of the stator outer shell; a screw, the screw being inserted into the axial hole of the stator liner and being rotatable relative to the stator liner; A connecting assembly includes a first nut, a second nut and a connecting component, the first nut and the second nut are respectively screwed to the two axial ends of the stator outer shell, the connecting component is sleeved on the screw and arranged on the stator outer shell, and the two axial sides of the connecting component are respectively abutted against the first nut and the stator liner.

6. The screw valve installation structure according to claim 5, characterized in that, The connecting component includes a backing ring and a first washer connected to each other. The side of the backing ring facing away from the first washer abuts against the first nut, and the side of the first washer facing away from the backing ring abuts against the stator liner.

7. The screw valve mounting structure according to claim 5, wherein, The connecting component includes a sealed bearing, a second gasket and a rotary pan seal that abut against each other in sequence. The side of the sealed bearing facing away from the second gasket abuts against the first nut, and the side of the rotary pan seal facing away from the second gasket abuts against the stator liner.

8. The screw valve installation structure according to claim 6 or 7, characterized in that, The screw structure further includes a runner assembly, the runner assembly includes a runner member and a glue inlet nozzle, through holes are formed in the side walls of the stator outer sleeve and the stator inner liner, and two ends of the runner member in the length direction are respectively communicated with the glue inlet nozzle and the through holes.

9. The screw valve installation structure according to claim 8, characterized in that, The screw structure further includes a plug, the glue inlet nozzle is connected to the side wall of the runner member, and the plug is inserted into the runner member along the length direction of the runner member to block the end of the runner member.

10. A screw valve, characterized in that, It includes the screw structure according to any one of claims 1 to 9, and a driving assembly, an output end of the driving assembly is connected to the screw structure; a syringe assembly, the syringe assembly includes a syringe and a syringe mounting bracket, the syringe mounting bracket is connected to the side wall of the valve body, a mounting groove is formed at one end of the syringe mounting bracket away from the valve body, and the syringe is clamped in the mounting groove and fixed by screwing.

Images