A diaphragm one-way switch valve suitable for various glue viscosities

Abstract

This invention relates to the field of switching valve technology, and in particular to a diaphragm-type one-way switching valve suitable for various adhesive viscosities. The valve includes a valve body, an adhesive inlet device, and an adhesive outlet device. The valve body has an adhesive inlet channel, an adhesive outlet channel, and a cavity. The adhesive inlet channel and the adhesive outlet channel are respectively connected to the cavity. An adhesive inlet valve chamber is provided between the adhesive inlet channel and the cavity, and an adhesive outlet valve chamber is provided between the adhesive outlet channel and the cavity. The adhesive inlet device includes an adhesive inlet cylinder, a first sealing mounting plate, and an adhesive inlet valve core rod. The first sealing mounting plate has a first transition hole penetrating the plate surface, and a first diaphragm is disposed within the first transition hole. The first sealing mounting plate is mounted on the adhesive inlet cylinder, and the adhesive inlet valve core rod is powered and mounted on the adhesive inlet cylinder. By changing the sealing method of the switching valve from the traditional V-type seal to a seal using a first diaphragm and a second diaphragm, sliding friction between the first and second diaphragms during operation is avoided, thereby increasing the service life of the device.

Description

Technical Field

[0001] The invention relates to the technical field of switch valves, and in particular to a diaphragm type one-way switch valve suitable for various glue viscosities. Background Art

[0002] In the field of pneumatic or hydraulic control, switch valves are widely used. Various one-way fluid controls are needed to control the on-off of fluids; for example, in the process of applying glue, the switch valve can achieve a good gluing effect, but when applying glue through the switch valve, since the glue is liquid and the switch valve is controlled by air pressure, the manufacturing of the switch valve needs to consider whether the on-off control of gas and liquid has a reasonable sealing effect.

[0003] At present, the switch valves on the market generally use a V-type sealing structure for the valve core position, but it has the following disadvantages and shortcomings: frequent sliding friction between the V-type seal and the valve core causes the service life of the V-type seal and the valve core to be reduced. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0005] A diaphragm type one-way switch valve suitable for various glue viscosities, comprising a valve body, a glue feeding device and a glue discharging device, wherein a glue feeding channel, a glue discharging channel and a cavity are arranged in the valve body, the glue feeding channel and the glue discharging channel are respectively connected to the cavity, a glue feeding valve chamber is arranged between the glue feeding channel and the cavity, and a glue discharging valve chamber is arranged between the glue discharging channel and the cavity; the glue feeding device comprises a glue feeding cylinder, a first sealing mounting plate and a glue feeding valve core rod, a first transition hole penetrating the plate surface is arranged on the first sealing mounting plate, a first diaphragm is arranged in the first transition hole, the first sealing mounting plate is mounted on the glue feeding cylinder, and the glue feeding valve core rod is dynamically mounted on the glue feeding cylinder On the glue inlet cylinder, the glue inlet valve core rod passes through the first diaphragm to seal with the glue inlet valve chamber, and the glue inlet valve core rod is sealed and combined with the first diaphragm; the glue discharge device includes a glue discharge cylinder, a second sealing mounting plate and a glue discharge valve core rod, the second sealing mounting plate is provided with a second transition hole penetrating the plate surface, a second diaphragm is provided in the second transition hole, the second sealing mounting plate is installed on the glue discharge cylinder, the glue discharge valve core rod is dynamically installed on the glue discharge cylinder, the glue discharge valve core rod passes through the second diaphragm to seal with the glue discharge valve chamber, and the glue discharge valve core rod is sealed and combined with the second diaphragm.

[0006] Preferably, the glue inlet valve core rod includes a glue inlet valve core and a glue inlet rod, the glue inlet rod is dynamically connected to the glue inlet cylinder, the glue inlet valve core passes through the first diaphragm, the glue inlet valve core is frustum-shaped, and a hammer-shaped slot that seals and matches the glue inlet valve core is provided in the glue inlet valve chamber, and the hammer-shaped slot is made of silicone material; the rear end of the glue inlet valve core is a planar structure, and the rear end of the glue inlet valve core is sealed and combined with the middle of the first diaphragm.

[0007] Preferably, a first annular ring is provided on the glue feeding rod, the front end of the first annular ring is tightly matched with the first diaphragm, and the rear end of the first annular ring is plug-fitted with the piston end of the glue feeding cylinder.

[0008] Preferably, the glue discharge valve core rod includes a glue discharge valve core and a glue discharge rod, the glue discharge rod is dynamically connected to the glue discharge cylinder, the glue discharge valve core passes through the second diaphragm, the glue discharge valve core is T-shaped, and a T-shaped slot that seals and matches the glue discharge valve core is provided between the glue discharge valve chambers, and the T-shaped slot is made of silicone material; the rear end of the glue discharge valve core is a planar structure, and the rear end of the glue discharge valve core is sealed and combined with the middle of the second diaphragm.

[0009] Preferably, a second annular ring is provided on the glue discharging rod, the front end of the second annular ring is tightly matched with the second diaphragm, and the rear end of the second annular ring is plug-fitted with the piston end of the glue discharging cylinder.

[0010] Preferably, the cavity includes a glue inlet valve channel, a glue outlet valve channel, a metering glue inlet channel, a metering glue outlet channel and a buffer channel; the glue inlet valve channel is sealed and connected to the glue inlet valve chamber, the metering glue inlet channel is sealed and connected to the glue inlet valve channel, the metering glue outlet channel is sealed and connected to the buffer channel and the glue outlet valve channel respectively, and the glue outlet valve channel is sealed and connected to the glue outlet valve chamber; the metering glue inlet channel, the metering glue outlet channel and the buffer channel are respectively connected to the outside of the valve body, and the metering glue inlet channel and the metering glue outlet channel are located on the same side of the valve body.

[0011] Preferably, the first transition hole and the second transition hole are both provided with a curved annular portion, and the edge of the first diaphragm or the second diaphragm is tightly fitted with the curved annular portion.

[0012] Preferably, the valve body is provided with annular sealing grooves at positions around the glue inlet valve chamber and the glue outlet valve chamber, and O-rings are arranged in the annular sealing grooves. The O-ring corresponding to the glue inlet valve chamber is sealed in cooperation with the first sealing mounting plate, and the O-ring corresponding to the glue outlet valve chamber is sealed in cooperation with the second sealing mounting plate.

[0013] Preferably, the glue outlet valve chamber and the glue inlet valve chamber are located on the same side of the valve body, and the glue inlet valve chamber is arranged above the glue outlet valve chamber.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By changing the sealing form of the switch valve from the traditional V-type sealing to the sealing of the first diaphragm and the second diaphragm, sliding friction between the first diaphragm and the second diaphragm during the working process is avoided, thereby increasing the service life of the device; and the first diaphragm and the second diaphragm have a deformation effect. Since the inside of the glue inlet cylinder and the glue outlet cylinder is gas, and the inside of the valve body is glue, the first diaphragm or the second diaphragm not only has the function of isolating the gas and liquid on both sides to play a sealing role, but also has a buffering effect on the pressure difference on both sides through the deformation effect, which can more effectively solve the problem of traditional V-type sealing that the pressure difference on both sides is too large, causing the side with higher pressure to overflow to the side with lower pressure, thereby affecting the accuracy.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a cross-sectional schematic diagram of the present invention.

[0020] Figure 3 The present invention Figure 2 Schematic diagram of the structure at A in the middle.

[0021] Figure 4 The present invention Figure 2 Schematic diagram of the structure at B in the figure. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figures 1 to 4In an embodiment of the present invention, a diaphragm type one-way switch valve suitable for various glue viscosities includes a valve body 10, a glue feeding device 20 and a glue discharging device 30. A glue feeding channel 15, a glue discharging channel 16 and a cavity 40 are arranged in the valve body 10. The glue feeding channel 15 and the glue discharging channel 16 are respectively connected to the cavity 40. A glue feeding valve chamber 11 is arranged between the glue feeding channel 15 and the cavity 40, and a glue discharging valve chamber 12 is arranged between the glue discharging channel 16 and the cavity 40; the glue feeding device 20 includes a glue feeding cylinder 21, a first sealing mounting plate 22 and a glue feeding valve core rod 23. The first sealing mounting plate 22 is provided with a first transition hole 221 penetrating the plate surface, and a first diaphragm 24 is arranged in the first transition hole 221. The first sealing mounting plate 22 is installed on the glue feeding cylinder 21. The glue feeding valve core The rod 23 is dynamically installed on the glue feeding cylinder 21, and the glue feeding valve core rod 23 passes through the first diaphragm 24 to be sealed with the glue feeding valve chamber 11, and the glue feeding valve core rod 23 is sealed and combined with the first diaphragm 24; the glue discharging device 30 includes a glue discharging cylinder 31, a second sealing mounting plate 32 and a glue discharging valve core rod 33, the second sealing mounting plate 32 is provided with a second transition hole 321 penetrating the plate surface, and a second diaphragm 34 is provided in the second transition hole 321, the second sealing mounting plate 32 is installed on the glue discharging cylinder 31, and the glue discharging valve core rod 33 is dynamically installed on the glue discharging cylinder 31, and the glue discharging valve core rod 33 passes through the second diaphragm 34 to be sealed and matched with the glue discharging valve chamber 12, and the glue discharging valve core rod 33 is sealed and combined with the second diaphragm 34.

[0024] In the above technical means, the sealing form of the switch valve is changed from the traditional V-type sealing to the first diaphragm 24 and the second diaphragm 34 for sealing, which avoids sliding friction between the first diaphragm 24 and the second diaphragm 34 during operation, thereby increasing the service life of the device; and the first diaphragm 24 and the second diaphragm 34 have a deformation effect. Since the inside of the glue inlet cylinder 21 and the glue outlet cylinder 31 is gas, and the inside of the valve body 10 is glue, the first diaphragm 24 or the second diaphragm 34 not only has a sealing effect by isolating the gas and liquid on both sides, but also has a buffering effect on the pressure difference on both sides through the deformation effect, which can more effectively solve the problem of traditional V-type sealing due to excessive pressure difference on both sides, causing the side with higher pressure to overflow to the side with lower pressure, affecting the accuracy.

[0025] Further Figure 3 As shown, the glue inlet valve core rod 23 includes a glue inlet valve core 232 and a glue inlet rod 231. The glue inlet rod 231 is dynamically connected to the glue inlet cylinder 21. The glue inlet valve core 232 passes through the first diaphragm 24. The glue inlet valve core 232 is in a cone shape. A hammer-shaped slot 13 that seals and fits the glue inlet valve core 232 is provided in the glue inlet valve chamber 11. The hammer-shaped slot 13 is made of silicone material. The rear end of the glue inlet valve core 232 is a planar structure, and the rear end of the glue inlet valve core 232 is sealed and combined with the middle of the first diaphragm 24.

[0026] In the above-mentioned technical means, the hammer-table-shaped slot 13 is made of silicone material. During the sealing process of the hammer-table-shaped slot 13 and the glue inlet valve core 232, the sealing degree between the hammer-table-shaped slot 13 and the glue inlet valve core 232 can be strengthened, and by designing the glue inlet valve core 232 to have a conical table-shaped structure, the fit between the glue inlet valve core 232 and the hammer-table-shaped slot 13 is made tighter.

[0027] Further Figure 3 As shown, a first annular ring 25 is provided on the glue feeding rod 231, and the front end of the first annular ring 25 is tightly matched with the first diaphragm 24, and the rear end of the first annular ring 25 is plugged into and matched with the piston end of the glue feeding cylinder 21; by adopting the first annular ring 25 to be tightly matched with the first diaphragm 24, the stability of the first diaphragm 24 during the deformation process can be guaranteed, thereby improving the service life of the first diaphragm 24.

[0028] Further Figure 4 As shown, the glue discharging valve core rod 33 includes a glue discharging valve core 332 and a glue discharging rod 331. The glue discharging rod 331 is dynamically connected to the glue discharging cylinder 31. The glue discharging valve core 332 passes through the second diaphragm 34. The glue discharging valve core 332 is T-shaped. A T-shaped slot 14 that seals and fits the glue discharging valve core 332 is provided between the glue discharging valve chambers 12. The T-shaped slot 14 is made of silicone material. The rear end of the glue discharging valve core 332 is a planar structure, and the rear end of the glue discharging valve core 332 is sealed and combined with the middle of the second diaphragm 34.

[0029] In the above technical means, the T-shaped slot 14 is made of silicone material. During the sealing process between the T-shaped slot 14 and the glue discharge valve core 332, the sealing degree between the T-shaped slot 14 and the glue discharge valve core 332 can be strengthened, and by designing the glue discharge valve core 332 to have a T-shaped structure, the fit between the glue discharge valve core 332 and the T-shaped slot 14 is tighter, preventing the glue discharge valve core 332 from being squeezed open due to excessive glue in the valve body 10.

[0030] Further Figure 4 As shown, a second annular ring 35 is provided on the glue discharging rod 331, the front end of the second annular ring 35 is tightly matched with the second diaphragm 34, and the rear end of the second annular ring 35 is plugged into and matched with the piston end of the glue discharging cylinder 31; by adopting the second annular ring 35 to tightly match with the second diaphragm 34, the stability of the second diaphragm 34 during the deformation process can be guaranteed, thereby improving the service life of the second diaphragm 34.

[0031] Further Figure 2As shown, the cavity 40 includes a glue inlet valve channel 41, a glue outlet valve channel 45, a metering glue inlet channel 42, a metering glue outlet channel 43 and a buffer channel 44; the glue inlet valve channel 41 is sealed and connected to the glue inlet valve chamber 11; the metering glue inlet channel 42 is sealed and connected to the glue inlet valve channel 41; the metering glue outlet channel 43 is sealed and connected to the buffer channel 44 and the glue outlet valve channel 45 respectively; the glue outlet valve channel 45 is sealed and connected to the glue outlet valve chamber 12; the metering glue inlet channel 42, the metering glue outlet channel 43 and the buffer channel 44 are respectively connected to the outside of the valve body 10, and the metering glue inlet channel 42 and the metering glue outlet channel 43 are located on the same side of the valve body 10.

[0032] In the above technical means, the metering glue inlet channel 42 and the metering glue outlet channel 43 are used to connect the metering pump to realize the glue supply metering, and the buffer channel 44 plays a reflux buffering role. During operation, the glue inlet channel 15 is connected to the glue supply device, and the glue outlet channel 16 is connected to the glue coating head. The glue first enters the glue inlet valve chamber 11 along the glue inlet channel 15, and the glue inlet valve chamber 11 is controlled by the glue inlet cylinder 21. Then, the glue enters the metering glue inlet channel 42 along the glue inlet valve channel 41, and then enters the metering pump to measure the amount of glue. Then, the measured glue is sent to the glue outlet valve channel 45 along the metering glue outlet channel 43, and then sent to the glue outlet valve chamber 12 through the glue outlet valve channel 45. The glue outlet valve chamber 12 is opened and closed by the control of the glue outlet cylinder 31. Finally, the measured glue will be sent to the glue coating head along the glue outlet channel 16 to supply glue.

[0033] Further Figure 3-4 As shown, the first transition hole 221 and the second transition hole 321 are both provided with a curved annular portion 19, and the edge of the first diaphragm 24 or the second diaphragm 34 is tightly fitted with the curved annular portion 19; by designing the curved annular portion 19, the first diaphragm 24 or the second diaphragm 34 can be matched with the curved annular portion 19 during the deformation process, thereby protecting the first diaphragm 24 or the second diaphragm 34.

[0034] Further Figure 2-3 As shown, the valve body 10 is provided with annular sealing grooves 17 at positions around the discharging valve chamber 12 and the discharging valve chamber 12, and an O-ring 18 is arranged in the annular sealing groove 17. The O-ring 18 of the corresponding discharging valve chamber 11 is sealed with the first sealing mounting plate 22, and the O-ring 18 of the corresponding discharging valve chamber 12 is sealed with the second sealing mounting plate 32; the airtightness between the first sealing mounting plate 22, the second sealing mounting plate 32 and the valve body 10 is strengthened.

[0035] Further Figure 1-2As shown, the glue outlet valve chamber 12 and the glue inlet valve chamber 11 are located on the same side of the valve body 10, and the glue inlet valve chamber 11 is arranged above the glue outlet valve chamber 12; by arranging the glue outlet valve chamber 12 and the glue inlet valve chamber 11 on the same side, it can be ensured that the overall structure occupies a small space and can also enhance the overall neat and beautiful effect; and by arranging the glue inlet valve chamber 11 above the glue outlet valve chamber 12, the glue flows from top to bottom, preventing backflow.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A diaphragm type one-way switch valve suitable for various glue viscosities, characterized in that: The invention comprises a valve body, a glue feeding device and a glue discharging device, wherein a glue feeding channel, a glue discharging channel and a cavity are arranged in the valve body, the glue feeding channel and the glue discharging channel are respectively connected with the cavity, a glue feeding valve chamber is arranged between the glue feeding channel and the cavity, and a glue discharging valve chamber is arranged between the glue discharging channel and the cavity; the glue feeding device comprises a glue feeding cylinder, a first sealing mounting plate and a glue feeding valve core rod, a first transition hole penetrating the plate surface is arranged on the first sealing mounting plate, a first diaphragm is arranged in the first transition hole, the first sealing mounting plate is arranged on the glue feeding cylinder, the glue feeding valve core rod is dynamically arranged on the glue feeding cylinder, and the glue feeding valve core The rod passes through the first diaphragm to seal with the glue inlet valve chamber, and the glue inlet valve core rod is sealed and combined with the first diaphragm; the glue discharging device includes a glue discharging cylinder, a second sealing mounting plate and a glue discharging valve core rod, the second sealing mounting plate is provided with a second transition hole penetrating the plate surface, a second diaphragm is provided in the second transition hole, the second sealing mounting plate is installed on the glue discharging cylinder, the glue discharging valve core rod is dynamically installed on the glue discharging cylinder, the glue discharging valve core rod passes through the second diaphragm to seal with the glue discharging valve chamber, and the glue discharging valve core rod is sealed and combined with the second diaphragm; The glue inlet valve core rod comprises a glue inlet valve core and a glue inlet rod. The glue inlet rod is connected to the glue inlet cylinder power. The glue inlet valve core passes through the first diaphragm. The glue inlet valve core is in a cone shape. A hammer table-shaped slot that seals and matches the glue inlet valve core is provided between the glue inlet valve chambers. The hammer table-shaped slot is made of silicone material. The rear end of the glue inlet valve core is a plane structure. The rear end of the glue inlet valve core is sealed and combined with the middle of the first diaphragm. A first annular ring is arranged on the glue feeding rod, the front end of the first annular ring is tightly matched with the first diaphragm, and the rear end of the first annular ring is plug-fitted with the piston end of the glue feeding cylinder; The glue discharging valve core rod comprises a glue discharging valve core and a glue discharging rod. The glue discharging rod is connected to the glue discharging cylinder power. The glue discharging valve core passes through the second diaphragm. The glue discharging valve core is T-shaped. A T-shaped slot for sealing and matching the glue discharging valve core is provided between the glue discharging valve chambers. The T-shaped slot is made of silicone material. The rear end of the glue discharging valve core is a plane structure. The rear end of the glue discharging valve core is sealed and combined with the middle of the second diaphragm. A second annular ring is arranged on the glue discharging rod, the front end of the second annular ring is closely matched with the second diaphragm, and the rear end of the second annular ring is plug-fitted with the piston end of the glue discharging cylinder; The cavity includes a glue inlet valve channel, a glue outlet valve channel, a metering glue inlet channel, a metering glue outlet channel and a buffer channel. The glue inlet valve channel is sealed and connected with the glue inlet valve chamber, the metering glue inlet channel is sealed and connected with the glue inlet valve channel, the metering glue outlet channel is sealed and connected with the buffer channel and the glue outlet valve channel respectively, and the glue outlet valve channel is sealed and connected with the glue outlet valve chamber; the metering glue inlet channel, the metering glue outlet channel and the buffer channel are respectively connected to the outside of the valve body, and the metering glue inlet channel and the metering glue outlet channel are located on the same side of the valve body; The first transition hole and the second transition hole are both provided with a curved annular portion, and the edge of the first diaphragm or the second diaphragm is tightly fitted with the curved annular portion; The valve body is provided with annular sealing grooves at the positions around the dispensing valve chamber and the dispensing valve chamber, and an O-type sealing ring is arranged in the annular sealing groove. The O-type sealing ring corresponding to the dispensing valve chamber is sealed with the first sealing mounting plate, and the O-type sealing ring corresponding to the dispensing valve chamber is sealed with the second sealing mounting plate; The glue discharge valve chamber and the glue inlet valve chamber are located on the same side of the valve body, and the glue inlet valve chamber is arranged above the glue discharge valve chamber.

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