CN218223221U - Screw valve convenient to adjustment glue solution extrusion clearance - Google Patents

Abstract

The utility model relates to the technical field of screw valves, in particular to a screw valve convenient for adjusting glue solution extrusion clearance, which comprises a valve seat, a rotor driving piece, a stator, a rotor, a nesting piece, a needle head assembly and a fastener, wherein the rotor driving piece is arranged on the valve seat; the rotor comprises a connecting shaft and a screw rod, the connecting shaft is in transmission connection with the rotor driving piece, the screw rod is fixedly connected with the connecting shaft or integrally formed, the nested piece is arranged between the stator and the screw rod, the nested piece is detachably connected with the stator, and an extrusion gap is formed between the nested piece and the outer side wall of the screw rod; the needle assembly includes a needle and a mounting block. The utility model discloses a screw rod valve convenient to adjustment glue solution extrusion gap, when the screw rod valve is used for the glue solution of different granules, through setting up the nest, the nest can be dismantled with the stator and be connected to need not change the stator, only need change the nest and can adjust extrusion gap, the change mode is simple, practices thrift the cost.

Description

Screw valve convenient to adjustment glue solution extrusion clearance

Technical Field

The utility model relates to a screw-down valve technical field especially relates to a screw-down valve convenient to clearance is extruded to adjustment glue solution.

Background

At present, along with the development of medium and high viscosity particle-containing glue solution in different applications, the types of particle materials and the types of particle sizes are more and more, and the concentric screw valve cannot be simultaneously suitable for different particles in practical application due to the fact that the sizes of a stator and a rotor are single.

Tin paste and silver paste: the material is soft, the metal tin/silver particles are extruded into an extrusion gap between the screw and the inner wall of the stator during the glue discharging process, and the particles are pressed and deformed to lose the original material performance; the problem that the particles are extruded and deformed can be solved when the extrusion gap is enlarged to be 1-3 times of the maximum particle size, but the extrusion gap is too large, so that the glue discharging efficiency is reduced, and the production efficiency of the solder paste dispensing process cannot be achieved. It becomes especially important to control the extrusion gap between the rubber valve screw and the inner wall of the stator.

Heat conductive silicone: the material is hard, and if the particles can not smoothly pass through an extrusion gap between the screw and the inner wall of the stator in the glue discharging process, the hard particles can grind the outer wall of the screw and the inner wall of the stator, so that metal chips falling from the particles are mixed into the glue solution, and the glue solution is deteriorated and can not be used; after the inner walls of the screw and the stator are worn for a long time, the problems of unstable glue output amount and reduced precision of the screw valve can occur. Therefore, it becomes important to control the extrusion gap between the screw of the rubber valve and the inner wall of the stator

In view of the above problems, it is generally necessary to adjust the extrusion gap between the rubber valve screw and the inner wall of the stator according to different particles to meet the requirements of different particles on the extrusion gap, but in the conventional screw valve, the extrusion gap between the screw and the inner wall of the stator needs to be adjusted, so that different screws or different stators need to be replaced, the replacement method is complicated, and the cost for replacing the stator or the screw is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model provides a screw-down valve convenient to adjustment glue solution extrusion gap, when the screw-down valve is used for the glue solution of different granules, need not change the stator, only need to change nested piece and can adjust extrusion gap, the change mode is simple, practices thrift the cost.

According to the utility model discloses screw-down valve convenient to adjustment glue solution extrusion gap, include:

a valve seat;

a rotor drive mounted on the valve seat;

the stator is arranged on the valve seat, a liquid cavity is arranged in the stator, and glue liquid flows through the liquid cavity;

the rotor comprises a connecting shaft and a screw rod, the connecting shaft is in transmission connection with the rotor driving piece, the screw rod is fixedly connected with the connecting shaft or integrally formed, the screw rod is installed in the liquid cavity, and a sealing piece is sleeved on the connecting shaft to seal the upper end of the liquid cavity;

the nesting piece is arranged between the stator and the screw rod and is detachably connected with the stator, and an extrusion gap is formed between the nesting piece and the outer side wall of the screw rod;

the syringe needle subassembly, the syringe needle subassembly includes syringe needle and installation piece, the lower extreme at the nested piece is installed to the installation piece, syringe needle and installation piece fixed connection, the syringe needle with the sap cavity is linked together.

The utility model discloses a screw valve convenient to adjustment glue solution extrusion gap, when the screw valve is used for the glue solution of different granules, need adjust the clearance of extruding between stator and the screw rod in the screw valve, through setting up nested, nested can dismantle with the stator and be connected, thereby need not change the stator, only need to change nested can adjust the clearance of extruding, the size in clearance can be adjusted to extrude to the nested of changing different internal diameters, the change mode is simple, and compare in changing the stator, the cost of changing nested is lower, thereby reach cost-effective purpose, in big use in batches, the cost of saving is more showing.

The needle head assembly is detachably connected with the stator, and the needle head assembly and the nesting piece are abutted to the stator.

Further, when the glue solution contains hard particles, the size of the extrusion gap is controlled within the range of 1.5-3.0 times of the maximum particle size.

Further, when the glue solution contains soft particles, the size of the extrusion gap is controlled to be in the range of 0 to 0.5 times of the minimum particle size.

Further, be provided with the mounting hole in the stator, nested install in the mounting hole, be provided with the spacing face of step in the mounting hole, nested lateral wall is provided with spacing boss, the terminal surface of spacing boss with the spacing face of step is inconsistent carries on spacingly.

Further, the outer side surface of the nested piece is a conical side surface, and a conical hole matched with the conical side surface is formed in the stator.

Further, the lateral surface of nested spare is cylindrical side, be provided with in the stator with cylindrical side matched with cylindrical hole.

Further, the lower extreme of nested piece is provided with the external screw thread section, be provided with the internal thread hole section in the stator, nested piece with the stator carries out threaded connection through internal thread section and external screw thread section.

Further, the length of the external thread section is smaller than the length of the internal thread section.

Furthermore, a fixing groove is formed in the fastener, the mounting block is mounted in the fixing groove, the needle head penetrates out of the lower end of the fastener, and the fastener is in threaded connection with the stator.

The beneficial effects of the utility model are that, the utility model discloses a screw-rod valve convenient to adjustment glue solution extrusion gap, when the screw-rod valve is used for the glue solution of different granule, need adjust the extrusion gap between stator and the screw rod in the screw-rod valve, through setting up nested, nested can dismantle with the stator and be connected, thereby need not change the stator, only need to change nested can adjust the extrusion gap, the size of extruding the gap can be adjusted to the nested of changing different internal diameters, the change mode is simple, and compare in changing the stator, it is lower to change nested cost, thereby reach the purpose of practicing thrift the cost, in big use in batches, the cost of saving is showing more.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a screw valve for adjusting a gap between extruded glue solutions;

FIG. 2 is a schematic view of a screw valve for adjusting the gap between the extruding of glue solution;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is an enlarged view at B in fig. 2.

Reference numerals:

1. a valve seat; 2. a rotor drive member; 3. a stator; 4. a rotor; 5. a connecting shaft; 6. a screw; 7. a seal member; 8. nesting; 9. an extrusion gap; 10. a needle assembly; 11. a needle head; 12. mounting a block; 13. a fastener; 14. mounting holes; 15. a step limiting surface; 16. a limiting boss; 17. and fixing the grooves.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An improved heating structure according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 4, the screw valve convenient for adjusting the gap between extruded glue solutions of the present invention includes a valve seat 1, a rotor driving member 2, a stator 3, a rotor 4, a nest member 8, a needle assembly 10 and a fastening member 13, wherein the rotor driving member 2 is mounted on the valve seat 1; the stator 3 is fixedly arranged on the rotor 4, and a liquid cavity is arranged in the stator 3 and is used for the glue solution to flow; the rotor 4 comprises a connecting shaft 5 and a screw rod 6, the connecting shaft 5 is in transmission connection with the rotor driving part 2, the screw rod 6 is fixedly connected with the connecting shaft 5 or integrally formed, the screw rod 6 is installed in the liquid cavity, and a sealing element 7 is sleeved on the connecting shaft 5 to seal the upper end of the liquid cavity.

The nesting piece 8 is arranged between the stator 3 and the screw 6, the nesting piece 8 is detachably connected with the stator 3, and an extrusion gap 9 is formed between the nesting piece 8 and the outer side wall of the screw 6; needle assembly 10 includes needle 11 and mounting block 12, and mounting block 12 is installed at the lower extreme of nest 8, and needle 11 and mounting block 12 fixed connection, needle 11 communicate with the fluid chamber. The fastener 13 abuts against the lower end face of the mounting block 12, and the fastener 13 is detachably connected with the stator 3 to tightly press the needle assembly 10 and the nest 8 against the stator 3. The fastener 13 is provided with a fixing groove 17, the mounting block 12 is mounted in the fixing groove 17, the needle 11 penetrates out of the lower end of the fastener 13, and the fastener 13 is in threaded connection with the stator 3.

When the glue solution contains hard particles, such as heat-conducting silicone: the material is hard, the size of the silica particles and the size of the extrusion gap 9 are controlled within the range of 1.5-3.0 times of the maximum particle size, including 1.5 times and 3.0 times. Through will extrude clearance 9 control at 1.5 ~ 3.0 time within range of the biggest particle diameter, can make the stereoplasm granule can pass through smoothly and extrude clearance 9, and can not block between the inner wall of nested 8 and the outer wall of screw rod 6, also can not grind 6 outer walls of screw rod and nested 8 inner walls, thereby can be very big reduce screw rod 6 and nested 8 by wearing and tearing, the life of nested 8 and screw rod 6 has effectively been improved, also can avoid because of the play volume of gluing unstability that the wearing and tearing of screw rod 6 and nested 8 seriously arouse.

Be provided with mounting hole 14 in the stator 3, nested 8 installs in mounting hole 14, is provided with the spacing face of step 15 in the mounting hole 14, and nested 8's lateral wall is provided with spacing boss 16, and the terminal surface of spacing boss 16 is inconsistent with the spacing face of step 15 and is spacing. The lateral surface of the nesting piece 8 is a cylindrical lateral surface, and a cylindrical hole matched with the cylindrical lateral surface is arranged in the stator 3. The lower extreme of nest 8 is provided with the external screw thread section, is provided with the internal thread hole section in the stator 3, and nest 8 carries out threaded connection through internal thread section and external screw thread section with stator 3. The length of the external thread section is smaller than that of the internal thread section.

The beneficial effects of the utility model are that, the utility model discloses a screw rod valve convenient to adjustment glue solution extrusion gap, when the screw rod 6 valve is used for the glue solution of different granules, need adjust the clearance 9 of extruding between stator 3 and the screw rod 6 in the screw rod 6 valve, through setting up nested 8, nested 8 can be dismantled with stator 3 and be connected, thereby need not change stator 3, only need to change nested 8 can adjust extrusion gap 9, the size of extruding clearance 9 can be adjusted to the nested 8 of changing different internal diameters, the change mode is simple, and compare in changing stator 3, it is lower to change nested 8's cost, thereby reach the purpose of practicing thrift the cost, in big batch use, the cost of saving is more showing.

Example 2

The difference from example 1 is that when soft particles are contained in the paste, for example, silver pastes of tin paste type: the material is soft, the metal tin/silver particles and the size of the extrusion gap 9 are controlled within the range of 0-0.5 times of the minimum particle size, including 0 and 0.5 times. Through the size control that will extrude clearance 9 at 0 ~ 0.5 within range of minimum particle diameter, soft granule is gluing the in-process at a play, because the clearance 9 of extruding between screw rod 6 and the nested 8 is less, soft granule can not extruded in clearance 9, just can not be extruded by screw rod 6 outer wall and nested 8 inner walls, soft granule also can not be by extrusion deformation, just can not lose the original characteristic of material yet to also can not be because of extruding clearance 9 and too big lead to a play to glue efficiency reduction.

Example 3

The difference from the embodiment 1 is that the outer side surface of the nesting piece 8 is a conical side surface, and a conical hole matched with the conical side surface is arranged in the stator 3. Through the cooperation in conical side and conical hole, conveniently lead through conical side when installation nested 8 to conical hole is to nested 8 can be followed the axial and is carried on spacingly, further reduces nested 8 and takes place the possibility of drunkenness along the axial in the use after the installation is accomplished, has improved nested 8's stability.

Example 4

The difference from the embodiment 2 is that the outer side surface of the nesting piece 8 is a conical side surface, and a conical hole matched with the conical side surface is arranged in the stator 3. Through the cooperation in conical side and conical hole, conveniently lead through conical side when installing nested 8 to conical hole can be followed the axial and spacing nested 8, further reduces nested 8 and takes place the possibility of drunkenness along the axial in the use after the installation is accomplished, has improved nested 8's stability.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a screw valve convenient to adjustment glue solution extrusion gap which characterized in that: comprises that

A valve seat (1);

a rotor drive (2), the rotor drive (2) being mounted on the valve seat (1);

the stator (3) is installed on the valve seat (1), a liquid cavity is formed in the stator (3), and glue liquid flows through the liquid cavity;

the rotor (4) comprises a connecting shaft (5) and a screw rod (6), the connecting shaft (5) is in transmission connection with the rotor driving piece (2), the screw rod (6) is fixedly connected with the connecting shaft (5) or integrally formed, the screw rod (6) is installed in the liquid cavity, and a sealing piece (7) is sleeved on the connecting shaft (5) to seal the upper end of the liquid cavity;

a nest (8), wherein the nest (8) is arranged between the stator (3) and the screw (6), the nest (8) is detachably connected with the stator (3), and an extrusion gap (9) is arranged between the nest (8) and the outer side wall of the screw (6);

needle subassembly (10), needle subassembly (10) includes needle (11) and installation piece (12), the lower extreme at nest (8) is installed to installation piece (12), needle (11) and installation piece (12) fixed connection, needle (11) with the liquid chamber is linked together.

2. A screw valve for facilitating the adjustment of a dope extrusion gap according to claim 1, wherein: the needle assembly further comprises a fastener (13), the fastener (13) is abutted against the lower end face of the mounting block (12), and the fastener (13) is detachably connected with the stator (3) so as to tightly abut the needle assembly (10) and the nesting piece (8) on the stator (3).

3. A screw valve for facilitating the adjustment of a gap for extrusion of a dope according to claim 2, wherein: when the glue solution contains hard particles, the size of the extrusion gap (9) is controlled within the range of 1.5-3.0 times of the maximum grain diameter.

4. A screw valve for facilitating the adjustment of a dope extrusion gap according to claim 2, wherein: when the glue solution contains soft particles, the size of the extrusion gap (9) is controlled within the range of 0-0.5 times of the minimum particle size.

5. A screw valve for facilitating the adjustment of a dope extrusion gap according to claim 2, wherein: be provided with mounting hole (14) in stator (3), nested piece (8) are installed in mounting hole (14), be provided with spacing face of step (15) in mounting hole (14), the lateral wall of nested piece (8) is provided with spacing boss (16), the terminal surface of spacing boss (16) with spacing face of step (15) are inconsistent carries on spacingly.

6. A screw valve for facilitating the adjustment of a gap for extrusion of a dope according to claim 2, wherein: the outer side surface of the nesting piece (8) is a conical side surface, and a conical hole matched with the conical side surface is formed in the stator (3).

7. A screw valve for facilitating the adjustment of a dope extrusion gap according to claim 2, wherein: the lateral surface of the nesting piece (8) is a cylindrical lateral surface, and a cylindrical hole matched with the cylindrical lateral surface is arranged in the stator (3).

8. A screw valve for facilitating the adjustment of a dope extrusion gap according to claim 1, wherein: the lower extreme of nest spare (8) is provided with the external screw thread section, be provided with the internal thread hole section in stator (3), nest spare (8) with stator (3) carry out threaded connection through internal thread section and external screw thread section.

9. A screw valve for facilitating the adjustment of a dope extrusion gap according to claim 8, wherein: the length of the external thread section is smaller than that of the internal thread section.

10. A screw valve for facilitating the adjustment of a dope extrusion gap according to claim 2, wherein: the fixing device is characterized in that a fixing groove (17) is formed in the fastening piece (13), the mounting block (12) is mounted in the fixing groove (17), the needle head (11) penetrates out of the lower end of the fastening piece (13), and the fastening piece (13) is in threaded connection with the stator (3).

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