阅读说明：本技术 恒压输出的双组份螺杆阀 (Constant pressure output two-component screw valve ) 是由 赵亚军 曲东升 李长峰 庄正 嵇沛宸 于 2021-09-22 设计创作，主要内容包括：本发明公开了一种恒压输出的双组份螺杆阀,具有用来固定定子的定子固定座,所述定子固定座上设置有两个定子出口和两个阀体出口,一个定子出口对应一个阀体出口,相互对应的定子出口与阀体出口之间由流道相连接,所述流道内设置有压力调节机构,使胶水先经过压力调节机构后再从螺杆阀的阀体出口流出。该恒压输出的双组份螺杆阀保证从螺杆阀阀体流出的胶水压力一致,实现恒压输出,显著降低产品型腔或小径针头的阻力对螺杆阀出胶量的影响。(The invention discloses a constant-pressure output two-component screw valve which is provided with a stator fixing seat used for fixing a stator, wherein two stator outlets and two valve body outlets are arranged on the stator fixing seat, one stator outlet corresponds to one valve body outlet, the mutually corresponding stator outlets and the valve body outlets are connected through a flow passage, and a pressure adjusting mechanism is arranged in the flow passage, so that glue water flows out from the valve body outlet of the screw valve after passing through the pressure adjusting mechanism. The two-component screw valve with constant pressure output ensures that the pressure of glue flowing out of the valve body of the screw valve is consistent, realizes constant pressure output, and obviously reduces the influence of the resistance of a product cavity or a small-diameter needle head on the glue output of the screw valve.)

1. The utility model provides a two ingredient screw valves of constant voltage output, has stator fixing base (2) that are used for fixed stator (1), be provided with two stator exports (3) and two valve body exports (4) on stator fixing base (2), a stator export (3) correspond a valve body export (4), are connected its characterized in that by runner (5) between stator export (3) that correspond each other and valve body export (4): and a pressure adjusting mechanism is arranged in the flow passage (5), so that the glue firstly passes through the pressure adjusting mechanism and then flows out from a valve body outlet (4) of the screw valve.

2. The constant-pressure-output two-component screw valve according to claim 1, wherein: pressure adjustment mechanism is including regulation post (6), spring (7) and tetrafluoro ball (8) that set gradually, it is used for compressing tightly to adjust post (6) spring (7), spring (7) are used for with tetrafluoro ball (8) compress tightly in runner (5) and exert sealing pressure to runner (5).

3. The constant-pressure-output two-component screw valve according to claim 2, wherein: the outer circular surface (601) of the adjusting column (6) is a thread surface which is in threaded connection with the stator fixing seat (2).

4. The constant-pressure-output two-component screw valve according to claim 3, wherein: a central hole (602) which is used for facilitating the outflow of glue and is used for being matched with a wrench to adjust the concealed installation depth of the adjusting column (6) is arranged in the axis direction of the adjusting column (6).

5. The constant-pressure-output two-component screw valve according to claim 2, wherein: an end face (603) close to one end of the spring (7) in the adjusting column (6) is matched with a first end face (701) of the spring (7), a second end face (702) of the spring (7) is matched with one side of the spherical surface of the tetrafluoro ball (8), and the other side of the spherical surface of the tetrafluoro ball (8) is in sealing fit with the flow channel (5).

6. The constant-pressure-output two-component screw valve according to claim 2, wherein: the stator fixing seat (2) is provided with a threaded hole (201) for realizing threaded connection with the adjusting column (6), a mounting hole (202) for placing a spring (7), a flow channel outlet (203) for being in sealing fit with the spherical surface of the tetrafluoro ball (8) and a mounting surface (204) for placing a stator sheath (9).

7. The constant-pressure-output two-component screw valve according to claim 6, wherein: the stator sheath (9) comprises a first mounting surface (901) matched with the stator fixing seat (2) and a second mounting surface (903) matched with the feeding cavity (11), and the feeding cavity (11) comprises a first mounting surface (1101) matched with the stator sheath (9).

8. The constant-pressure-output two-component screw valve according to claim 7, wherein: a first positioning column (902) is arranged on a first mounting surface (901) of the stator sheath (9), a first positioning hole (205) is arranged on a mounting surface (204) of the stator fixing seat (2), and the first positioning column (902) is inserted into the first positioning hole (205) in a matching mode, so that the first mounting surface (901) of the stator sheath (9) is matched with the mounting surface (204) of the stator fixing seat (2) in a positioning mode.

9. The constant-pressure-output two-component screw valve according to claim 7, wherein: and a second positioning column (904) is arranged on a second mounting surface (903) of the stator sheath (9), a second positioning hole (1102) is arranged on a first mounting surface (1101) of the feeding cavity (11), and the second positioning column (904) is inserted into the second positioning hole (1102) in a matching manner, so that the positioning matching of the second mounting surface (903) of the stator sheath (9) and the first mounting surface (1101) of the feeding cavity (11) is realized.

10. The constant-pressure-output two-component screw valve according to claim 7, wherein: the other end of feeding die cavity (11) is equipped with drive assembly (10), and rotor (12) are including screw rod (1202), connecting axle (1203) and transmission shaft (1204) that connect in order, and the inner chamber of stator (1) is inserted to the one end of screw rod (1202), and transmission shaft connecting portion (1206) are installed through bearing (1205) to the one end of transmission shaft (1204), realizes the hookup of drive assembly (10) and rotor (12) through transmission shaft connecting portion (1206).

Technical Field

The invention relates to the technical field of two-component screw valves, in particular to a constant-pressure output two-component screw valve.

Background

In the glue filling operation of the two-component screw valve, the flow resistance of glue liquid in a product cavity is increased due to the long and narrow flow channel of the product, and the pressure at the outlet of the screw valve is larger and unstable. Because the volumetric efficiency of the screw valve is strongly related to the output pressure of the screw valve, the output pressure of the screw valve has a great influence on the glue outlet amount and the glue outlet precision of the screw valve, and thus the advantage of high-precision quantitative glue dispensing is lost.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

Therefore, the invention provides the constant-pressure output two-component screw valve which has the advantages of ensuring the consistent pressure of glue flowing out of the valve body of the screw valve and realizing constant-pressure output.

The two-component screw valve with constant pressure output, provided by the embodiment of the invention, is provided with a stator fixing seat for fixing a stator, wherein two stator outlets and two valve body outlets are arranged on the stator fixing seat, one stator outlet corresponds to one valve body outlet, the mutually corresponding stator outlets and the valve body outlets are connected through a flow passage, and a pressure adjusting mechanism is arranged in the flow passage, so that glue water firstly passes through the pressure adjusting mechanism and then flows out of the valve body outlet of the screw valve.

The invention has the beneficial effects that the pressure adjusting mechanism is additionally arranged at the outlet of the stator and the rotor of the screw valve, so that the glue flows out of the valve body of the screw valve after passing through the pressure adjusting mechanism, the pressure of the glue flowing out of the valve body of the screw valve is ensured to be consistent, the constant-pressure output is realized, and the influence of the resistance of a product cavity or a small-diameter needle head on the glue output quantity of the screw valve is obviously reduced.

Further specifically, in the above technical solution, the outer circular surface of the adjusting column is a thread surface that is in threaded connection with the stator fixing seat.

Further specifically, in the above technical scheme, a center hole for facilitating the outflow of glue and for matching with a wrench to adjust the concealed installation depth of the adjusting column is formed in the axis direction of the adjusting column.

Further specifically, in the technical scheme, an end face, close to one end of the spring, of the adjusting column is matched with a first end face of the spring, a second end face of the spring is matched with one side of the spherical surface of the tetrafluoro ball, and the other side of the spherical surface of the tetrafluoro ball is in sealing fit with the flow channel.

Further specifically, in the above technical solution, the stator fixing seat is provided with a threaded hole for realizing threaded connection with the adjusting column, a mounting hole for placing a spring, a flow channel outlet for sealing and matching with a spherical surface of the tetrafluoro ball, and a mounting surface for placing a stator sheath.

Further specifically, in the above technical solution, the stator sheath includes a first mounting surface that is matched with the stator fixing seat and a second mounting surface that is matched with the feeding cavity, and the feeding cavity includes a first mounting surface that is matched with the stator sheath.

Further specifically, in the above technical solution, a first positioning column is arranged on the first mounting surface of the stator sheath, a first positioning hole is arranged on the mounting surface of the stator fixing seat, and the first positioning column is inserted into the first positioning hole in a matching manner, so that the first mounting surface of the stator sheath and the mounting surface of the stator fixing seat are positioned and matched.

Further specifically, in the above technical scheme, a second positioning column is arranged on a second mounting surface of the stator sheath, a second positioning hole is arranged on a first mounting surface of the feeding cavity, and the second positioning column is inserted into the second positioning hole in a matching manner, so that the second mounting surface of the stator sheath is in positioning fit with the first mounting surface of the feeding cavity.

Further specifically, prescribe a limit to, in the above-mentioned technical scheme, the other end of feeding die cavity is equipped with drive assembly, and the rotor includes screw rod, connecting axle and the transmission shaft that connects in order, and the inner chamber of stator is inserted to the one end of screw rod, and the transmission shaft connecting portion is installed through the bearing to the one end of transmission shaft, realizes the hookup of drive assembly and rotor through transmission shaft connecting portion.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a partial enlarged view I of FIG. 2;

FIG. 4 is a schematic view of the exploded structure of FIG. 1;

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is a schematic structural view of a stator fixing seat;

FIG. 7 is a schematic view of the structure of the conditioning column;

FIG. 8 is a schematic view of the spring structure;

FIG. 9 is a schematic view of the construction of the stator sheath;

FIG. 10 is a schematic view of a feed cavity;

FIG. 11 is a schematic view of the structure of the rotor;

fig. 12 is a partially enlarged view ii of fig. 2.

The reference numbers in the drawings are: 1. a stator; 101. a first fitting portion; 102. a second fitting portion; 103. an exposed portion; 2. a stator fixing seat; 201. a threaded hole; 202. mounting holes; 203. a flow channel outlet; 204. a mounting surface; 205. a first positioning hole; 3. a stator outlet; 4. an outlet of the valve body; 5. a flow channel; 6. an adjustment column; 601. an outer circular surface; 602. a central bore; 603. an end face; 7. a spring; 701. a first end face; 702. a second end face; 8. tetrafluoro balls; 9. a stator sheath; 901. a first mounting surface; 902. a first positioning post; 903. a second mounting surface; 904. a second positioning column; 10. a drive section assembly; 11. a feeding cavity; 1101. a first mounting surface; 1102. a second positioning hole; 12. a rotor; 1201. a drive shaft start hole; 1202. a screw; 1203. a connecting shaft; 1204. a drive shaft; 1205. a bearing; 1206. a transmission shaft connecting part; 13. a glue inlet hole; 14. a first observation window; 15. and a second observation window.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-12, the two-component screw valve with constant pressure output of the invention comprises a stator fixing seat 2 for fixing a stator 1, wherein two stator outlets 3 and two valve body outlets 4 are arranged on the stator fixing seat 2, one stator outlet 3 corresponds to one valve body outlet 4, the stator outlets 3 and the valve body outlets 4 which correspond to each other are connected by a flow channel 5, and a pressure adjusting mechanism is arranged in the flow channel 5, so that glue water firstly passes through the pressure adjusting mechanism and then flows out from the valve body outlet 4 of the screw valve.

Pressure adjustment mechanism is including the regulation post 6, spring 7 and the tetrafluoro ball 8 that set gradually, adjusts post 6 and is used for pressure spring 7, and spring 7 is used for compressing tightly tetrafluoro ball 8 in runner 5 and applys sealing pressure to runner 5, and this resistance need be overcome in the glue outflow to guarantee that the glue pressure of stator 1 export is invariable, guarantee that the volumetric efficiency of screw-rod valve is unchangeable.

The polytetrafluoroethylene ball 8 is a white pure polytetrafluoroethylene product, has good flexibility, compression resilience, creep resistance, high and low temperature resistance, excellent corrosion resistance, aging resistance and self-lubrication, has excellent sealing performance, is extremely convenient to install and use, and is an ideal sealing material.

The adjustment post 6 comprises an outer circular surface 601, a central hole 602 and an end surface 603. The outer circular surface 601 of the adjusting column 6 is a thread surface which is in threaded connection with the stator fixing seat 2. A central hole 602 for facilitating the outflow of glue and for matching with a wrench to adjust the concealed installation depth of the adjusting column 6 is opened in the axial direction of the adjusting column 6. An end face 603 close to one end of the spring 7 in the adjusting column 6 is matched with a first end face 701 of the spring 7, a second end face 702 of the spring 7 is matched with one side of the spherical surface of the tetrafluoro ball 8, and the other side of the spherical surface of the tetrafluoro ball 8 is in sealing fit with the flow passage 5.

The stator fixing seat 2 includes a threaded hole 201, a mounting hole 202, a flow passage outlet 203, a mounting surface 204, and a first positioning hole 205. The stator fixing seat 2 is provided with a threaded hole 201 for realizing threaded connection with the adjusting column 6, a mounting hole 202 for placing the spring 7, a flow passage outlet 203 for being in spherical sealing fit with the tetrafluoro ball 8 and a mounting surface 204 for placing the stator sheath 9. Threaded hole 201 realizes and adjusts the threaded connection of post 6 to the realization adjusts the relative stator fixing base 2's of post 6 mounting depth. The flow channel outlet 203 is matched with the spherical surface of the tetrafluoro ball 8, so that the tetrafluoro ball 8 seals the flow channel outlet 203. The mounting face 204 cooperates with the stator sheath 9 for placing the stator sheath 9. The number of the screw holes 201 is two, the number of the mounting holes 202 is two, and the number of the flow path outlets 203 is two.

The stator sheath 9 comprises a first mounting surface 901 matched with the stator fixing seat 2 and a second mounting surface 903 matched with the feeding cavity 11. The feeding cavity 11 is provided with a glue inlet hole 13. The feed cavity 11 comprises a mounting face one 1101 which cooperates with the stator sheath 9. Two first positioning columns 902 are arranged on the first mounting surface 901 of the stator sheath 9, two first positioning holes 205 are arranged on the mounting surface 204 of the stator fixing seat 2, and the first positioning columns 902 are inserted into the first positioning holes 205 in a matching manner, so that the first mounting surface 901 of the stator sheath 9 is matched with the mounting surface 204 of the stator fixing seat 2 in a positioning manner. Two second positioning columns 904 are arranged on the second mounting surface 903 of the stator sheath 9, two second positioning holes 1102 are arranged on the first mounting surface 1101 of the feeding cavity 11, and the second positioning columns 904 are inserted into the second positioning holes 1102 in a matching mode, so that the second mounting surface 903 of the stator sheath 9 is matched with the first mounting surface 1101 of the feeding cavity 11 in a positioning mode.

The two-component screw valve comprises the following installation steps: firstly, placing the tetrafluoro ball 8 in a mounting hole 202 of a stator fixing seat 2 to block the tetrafluoro ball on a flow passage outlet 203; then the spring 7 is placed in the mounting hole 202 of the stator fixing seat 2 and is pressed on the spherical surface of the tetrafluoro ball 8; then, the adjusting column 6 is installed in the threaded hole 201 of the stator fixing seat 2, the end surface 603 of the adjusting column presses the spring 7, and the spherical surface of the tetrafluoro ball 8 presses the runner outlet 203 of the stator fixing seat 2 through the spring force of the spring 7; then, the rotor 12, the feeding cavity 11, the stator 1 and relevant accessories are assembled into a valve body small assembly after being installed; finally, the stator sheath 9 is placed on the stator fixing seat 2, the first mounting surface 901 of the stator sheath is overlapped with the mounting surface 204, the first mounting surface 1101 of the valve body small assembly is placed on the second mounting surface 903 of the stator sheath 9, and then the stator fixing seat 2, the stator sheath 9 and the valve body small assembly are connected into a whole through bolts.

This two ingredient screw valves, through adjusting post 6, spring 7, tetrafluoro ball 8 in the stator fixing base 2, the pressure of adjustment stator export 3 makes screw valve constant voltage output medium, avoids the influence of external resistance to the volumetric efficiency of screw valve.

The outer wall of the stator 1 is provided with coating colors or character information for distinguishing the specification of the stator 1, a first observation window 14 for directly observing the specification of the stator 1 is arranged at the position of the stator sheath 9, a second observation window 15 for directly observing the rotation condition of the rotor 12 is arranged on the feeding cavity 11, the second observation window 15 is matched with an external tool, and the external tool is utilized to pass through the second observation window 15 to manually rotate the rotor 12. The number of the first observation windows 14 is two, and one first observation window 14 corresponds to one stator 1. The number of the second observation windows 15 is two, and one second observation window 15 corresponds to one rotor 12.

Because the stators and rotors with different specifications of the two-component screw valve are completely compatible on the mechanical assembly layer, the specifications of the stators and rotors of the two-component screw valve cannot be directly identified, a first observation window 14 for directly observing the specifications of the stator 1 is arranged at the position of the stator sheath 9, coating color or character information for distinguishing the specifications of the stators and the rotors is arranged on the outer wall of the stator 1, the specifications of the stator 1 can be directly observed through the first observation window 14, relevant parameters of the two-component screw valve are judged, the valve does not need to be disassembled or any mark is made on the outer side of the valve body, and the specifications of the stator 1 can be directly observed without disassembling the machine.

The other end of stator sheath 9 is equipped with into die cavity 11, and when not having glue output to controller normal operating, can't judge the problem point fast, through be provided with the second observation window 15 that is used for the rotatory condition of direct observation rotor 12 on feeding die cavity 11 to the abnormal point of glue is judged out fast. The second observation window 15 is used for observing whether the rotor 12 rotates when the screw valve works and diagnosing when a fault occurs; and secondly, as an avoidance hole, when the motor cannot drive the rotor 12 to rotate, a tool is used for penetrating through the avoidance hole to manually rotate the rotor 12.

The stator 1 is composed of a first assembling portion 101 at one end, a second assembling portion 102 at the other end and an exposed portion 103 between the first assembling portion 101 and the second assembling portion 102, the first assembling portion 101 is connected with the stator fixing seat 2, the second assembling portion 102 is connected with the feeding cavity 11, and the exposed portion 103 is not in contact with the stator sheath 9. Wherein the length of the first fitting part 101 occupies 1/6 of the overall length of the stator 1, the length of the second fitting part 102 occupies 1/6 of the overall length of the stator 1, and the length of the exposed part 103 occupies 2/3 of the overall length of the stator 1. When the stator 1 is installed, the first short assembling portion 101 of the stator 1 is connected with the stator fixing seat 2, the second short assembling portion 102 of the stator 1 is connected with the feeding cavity 11, and the other long exposed portions 103 are all exposed, so that when the stator 1 is adhered to the stator fixing seat 2 due to incomplete cleaning or glue leakage and the like, the stator 1 is easily taken out due to the fact that the contact area between the stator 1 and the stator fixing seat 2 is small. Simultaneously, utilize stator sheath 9, reduce the installation depth of stator 1 in feeding die cavity 11, when stator 1 glues inside feeding die cavity 11, can conveniently dismantle stator 1.

The other end of the feeding cavity 11 is equipped with a drive assembly 10, and a transmission shaft starting hole 1201 is formed in a rotor 12 of the screw valve, and the transmission shaft starting hole 1201 is used for being matched with a manual starting tool to manually rotate the rotor 12. The rotor 12 includes a screw rod 1202, a connecting shaft 1203 and a transmission shaft 1204 which are connected in sequence, one end of the screw rod 1202 is inserted into the inner cavity of the stator 1, one end of the transmission shaft 1204 is provided with a transmission shaft connecting part 1206 through a bearing 1205, and the connection of the driving assembly 10 and the rotor 12 is realized through the transmission shaft connecting part 1206. The drive shaft actuation aperture 1201 is disposed on the drive shaft 1204. The number of the drive shaft activating holes 1201 is plural, and the plural drive shaft activating holes 1201 are evenly distributed in the circumferential direction along one end of the drive shaft 1204. Increase transmission shaft start-up hole 1201 on rotor 12, when stator and rotor cooperation is tighter and stator and rotor because glue effect is even, lead to the start-up moment of torsion increase, the unable direct start-up of motor, can directly carry out manual rotation rotor 12 with the instrument this moment, need not to tear open the machine, when treating that rotor 12 is relative stator 1 can easily rotate, carry out the electricity again and start, and is easy and simple to handle, safety, prevent the condition that motor or rotor 12 damaged, die to the stator and rotor card, when the motor can't drive rotor 12 and start, manual rotation rotor 12, make between the stator and rotor not hard up, start again, prevent motor overload damage.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.