CN210159889U - Pressure reducing device and dispensing controller with same - Google Patents
Pressure reducing device and dispensing controller with same Download PDFInfo
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- CN210159889U CN210159889U CN201920964104.2U CN201920964104U CN210159889U CN 210159889 U CN210159889 U CN 210159889U CN 201920964104 U CN201920964104 U CN 201920964104U CN 210159889 U CN210159889 U CN 210159889U
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- pipe joint
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- 239000003292 glue Substances 0.000 claims abstract description 29
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 abstract description 8
- 230000007547 defect Effects 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 230000009123 feedback regulation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The utility model provides a pressure relief device and point glue controller that has it, pressure relief device includes: the pressure reducing valve is provided with an air inlet, an air outlet and an air outlet, the air inlet is connected with an air pressure source, and the air outlet is connected with the load to provide output air pressure for the load; the control module is electrically connected with the pressure reducing valve and sends an electric signal to the pressure reducing valve to set the output air pressure of the pressure reducing valve; the special pipe joint is internally limited with a pipe cavity which is communicated along the axial direction of the special pipe joint, the outer wall surface of the special pipe joint is provided with one or more air flow channels which are communicated with the pipe cavity, one end of the special pipe joint is connected with a load, and the other end of the special pipe joint is connected with an air outlet. According to the utility model discloses pressure relief device is simple structure not only, can weaken moreover output pressure overshoot and make in shorter time to be higher than the output pressure who sets for atmospheric pressure resume to unanimous with setting for atmospheric pressure, especially can promote the gluey controller of point and repeat the uniformity of working pressure when gluing fast.
Description
Technical Field
The utility model relates to a point gum machine technical field especially relates to a pressure relief device and have its point glue controller.
Background
The output air pressure proportion control principle of the pressure reducing valve is as follows: the built-in control circuit of the pressure reducing valve receives an electric signal for setting output air pressure, once the electric signal is increased, a built-in air supply electromagnetic valve of the pressure reducing valve is opened, part of supply pressure becomes output pressure through the air supply electromagnetic valve, and a built-in pressure sensor acquires the output pressure and feeds the output pressure back to the control circuit; similarly, when the electric signal decreases, a discharge solenoid valve incorporated in the pressure reducing valve opens, and the output side discharges a part of the pressure from the discharge port via the discharge solenoid valve, and the output pressure is collected by a pressure sensor incorporated therein and fed back to the control circuit. The feedback control is carried out until the output pressure reaches a set proportion with the input signal, and the output air pressure reaches a stable value.
The output air pressure stabilizing principle of the pressure reducing valve is as follows: if the electric signal received by the control loop arranged in the pressure reducing valve keeps unchanged, when the output air pressure flow of the air outlet is increased, the output air pressure of the pressure reducing valve can be reduced, and the feedback regulation force of the pressure reducing valve can be increased to enable the output air pressure to return to be consistent with the set air pressure; when the output air pressure flow of the air outlet is reduced (even the flow is reduced to 0), the pressure reducing valve continues to output air according to the balanced air supplement flow, the output air pressure is overshot, and after the pressure reducing valve detects the overshoot of the output air pressure, the air supplement flow is reduced until the output air pressure returns to be consistent with the set air pressure.
When the output air pressure flow of the air outlet is increased, a popular coping method is as follows: namely, the gas storage tanks with different volumes are connected in series in the output gas pressure gas circuit, so that the reduction rate of the output gas pressure of the pressure reducing valve is reduced.
When the output air pressure flow of the air outlet is reduced (even the flow is reduced to 0), the pressure reducing valve reduces the output air pressure from overshoot to be consistent with the set air pressure after long feedback adjustment time. However, the longer feedback adjustment time has the following disadvantages:
defect 1: after the load connected with the pressure output interface of the pressure reducing valve finishes the operation, the output air pressure overshoots, and the next operation can be started when the output air pressure is required to be decreased from overshooting to the same with the set air pressure;
defect 2: after the load connected with the pressure output interface of the pressure reducing valve finishes the operation, the output air pressure overshoots, and the next operation starts in advance, so that the initial air pressure of the next operation is higher.
In the application of the pressure reducing valve, the defect 1 causes the reduction of the operation efficiency, the defect 2 causes the difference of the operation parameters, when the pressure reducing valve is applied to the dispensing controller, the defect 1 causes the reduction of the dispensing efficiency (namely, the time interval of repeated dispensing is longer), and the defect 2 causes the poor dispensing quantity consistency (the difference of the initial dispensing air pressure and the different dispensing duration time cause the uncontrollable air pressure adjustment).
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a pressure relief device, this pressure relief device simple structure can realize weakening the output air pressure of relief pressure valve gas outlet and overshoot and resume relief pressure valve output air pressure to unanimous with setting for the atmospheric pressure fast.
The utility model also provides a controller is glued to the point.
According to the utility model discloses pressure relief device of first aspect embodiment for establish between atmospheric pressure source and load, pressure relief device includes: the pressure reducing valve is provided with an air inlet, an air outlet and an air outlet, the air inlet is connected with the air pressure source, and the air outlet is connected with the load to provide output air pressure for the load; the control module is electrically connected with the pressure reducing valve and sends an electric signal to the pressure reducing valve to set the output air pressure of the pressure reducing valve; the special pipe joint is internally limited with a pipe cavity which is communicated along the axial direction of the special pipe joint, the outer wall surface of the special pipe joint is provided with one or more airflow channels which are communicated with the pipe cavity, one end of the special pipe joint is connected with the load, and the other end of the special pipe joint is connected with the air outlet.
According to the utility model discloses pressure relief device, through the gas outlet with special-shaped pipe coupling connection to relief pressure valve, be equipped with the airflow channel from lumen to surface on the special-shaped pipe coupling, this pressure relief device is simple structure not only, can weaken moreover output pressure overshoot and make the output pressure that is higher than the settlement atmospheric pressure in shorter time resume to unanimous with settlement atmospheric pressure, especially can promote the gluey controller of point and repeat the uniformity of working pressure when gluing fast.
According to the utility model discloses pressure relief device can also have following additional technical characterstic.
According to an embodiment of the invention, the minimum diameter of the air flow channel is not more than 1mm or the minimum cross-sectional area is not more than 1mm2。
According to an embodiment of the invention, the load is a pneumatic control element or a pneumatic actuator.
According to the utility model discloses some glue controller of second aspect embodiment includes above-mentioned embodiment pressure relief device.
According to an embodiment of the present invention, the load includes: a discharge valve, an air inlet of which is connected with the special pipe joint; and the glue outlet pipeline is connected with the gas outlet of the discharge valve.
According to the utility model discloses an embodiment, the controller of gluing still include: the air storage tank is arranged between the special-shaped pipe joint and the discharge valve, two ends of the air storage tank are respectively connected with the special-shaped pipe joint and the discharge valve, the air storage tank inhibits the reduction of the output air pressure of the pressure reducing device at the moment when the glue dispensing controller starts to dispense glue, and inhibits the overshoot of the output pressure of the pressure reducing device at the moment when the glue dispensing controller finishes dispensing glue.
According to the utility model discloses an embodiment, the controller of gluing still include: the speed control valve is arranged between the special-shaped pipe joint and the load, two ends of the speed control valve are respectively connected with the special-shaped pipe joint and the discharge valve, and the speed control valve can be used for adjusting the maximum flow output by the pressure reducing device.
According to the utility model discloses an embodiment, the controller of gluing still include: the speed control valve is arranged between the special-shaped pipe joint and the gas storage tank, two ends of the speed control valve are respectively connected with the special-shaped pipe joint and the gas storage tank, and the speed control valve can adjust the maximum flow output by the pressure reducing device.
According to an embodiment of the present invention, the pressure reducing device is integrated with the speed control valve.
According to the utility model discloses an embodiment, the controller of gluing still include: the reducer pipe is arranged between the special-shaped pipe joint and the gas storage tank, and two ends of the reducer pipe are respectively connected with the special-shaped pipe joint and the gas storage tank.
Drawings
Fig. 1 is a schematic view of a part of a dispensing controller according to a first embodiment of the present invention;
fig. 2 is a schematic view of a part of a dispensing controller according to a second embodiment of the present invention;
fig. 3 is a schematic view of a part of a dispensing controller according to a third embodiment of the present invention;
fig. 4 is a schematic view of a part of a dispensing controller according to a fourth embodiment of the present invention;
fig. 5 is a schematic view of a part of a dispensing controller according to a fifth embodiment of the present invention;
fig. 6 is a schematic view of a part of a dispensing controller according to a sixth embodiment of the present invention;
fig. 7 is a schematic view of a part of a dispensing controller according to a seventh embodiment of the present invention.
Reference numerals:
a pressure reducing valve 10; a load 21; a discharge valve 22; a gas storage tank 23; a speed control valve 24; a reducer pipe 25; a control module 30; a shaped pipe joint 40; a source of air pressure 50; a hose 60; and a dispensing air pressure output interface 70.
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 indicated based on 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.
The pressure reducing device according to an embodiment of the present invention will be described first in detail with reference to the accompanying drawings.
As shown in fig. 1 to 7, a pressure reducing device according to an embodiment of the present invention is provided between an air pressure source 50 and a load 21, and includes a pressure reducing valve 10, a control module 30, and a special pipe joint 40.
Specifically, the pressure reducing valve 10 is provided with an air inlet, an air outlet and an air outlet, the air inlet is connected with an air pressure source 50, the air outlet is connected with the load 21 to provide output air pressure for the load 21, the control module 30 is electrically connected with the pressure reducing valve 10, the control module 30 sends an electric signal to the pressure reducing valve 10 to set the output air pressure of the pressure reducing valve 10, a pipe cavity which is communicated along the axial direction of the pipe cavity is defined in the special-shaped pipe joint 40, one or more air flow channels which are communicated with the pipe cavity are arranged on the outer wall surface of the special-shaped pipe joint 40, one end of the special-shaped pipe.
In other words, the pressure reducing device is mainly composed of the pressure reducing valve 10, the control module 30, and the contour joint 40. The air pressure source 50 is a high-pressure air source higher than the maximum set air pressure of the pressure reducing valve 10, and the load 21 uses the air pressure output by the air pressure source 50 as a power source. The pressure reducing valve 10 is disposed between the air pressure source 50 and the load 21, and the control module 30 controls an output air pressure of the pressure reducing valve 10 through an electric signal. The pressure reducing valve 10 is provided with an air inlet, an air outlet and an air outlet, the air inlet of the pressure reducing valve 10 is connected with an air pressure source 50, the air outlet of the pressure reducing valve 10 is empty or is provided with a silencer, the air outlet of the pressure reducing valve 10 is connected with a load 21 through a hose 60 or a hard connection mode, and a special-shaped pipe joint 40 is arranged between the load 21 and the air outlet of the pressure reducing valve 10. The profile joint 40 has an air flow path from the lumen to the outer surface.
As shown in fig. 1, the electrical signal sent by the control module 30 sets the output air pressure of the pressure reducing valve 10, and provides a stable air pressure consistent with the set output air pressure to the cascaded load end at the other end of the special pipe joint 40. When the load end does not consume or consumes the gas with a constant flow, the stable output gas pressure of the pressure reducing device is consistent with the set gas pressure. When the flow rate of the consumed gas at the load side is suddenly reduced (even when the flow rate is reduced to 0), the output air pressure of the pressure reducing device is higher than the set air pressure, a part of the output air pressure of the pressure reducing device 10 is discharged from the special pipe joint 40 connected to the air pressure output port of the pressure reducing device 10 at a fixed flow rate, and when the flow rate of the load 21 is reduced, the time required for the output air pressure of the pressure reducing device 10 to be reduced from overshoot to be consistent with the set air pressure is reduced.
The special-shaped pipe joint 40 can be an air flow channel reconstruction based on a standard product in the market, and can also be a self-made piece designed and processed, and the structure is simple. Based on the transformation realization of the pipe joint standard product, when the pipe joint standard product is connected to the air outlet of the pressure reducing valve 10 in a sealing manner, a hole is drilled on the surface of the cavity, which is in direct contact with the output air pressure, of the pipe joint standard product, and the hole directly or in a bending manner penetrates through the outer surface of the special-shaped pipe joint standard product to form the special-shaped pipe joint 40, and the hole on the outer surface needs to ensure that the special-shaped pipe joint 40 is not covered or shielded after being connected to the pressure reducing valve 10 and the connecting load 21 in a sealing manner (the purpose is. The air pressure output from the outlet of the pressure reducing valve 10 continuously flows out from the air flow passage at a fixed flow rate.
Regardless of whether or not airflow is required at the load side, the pressure relief valve 10 is always in a flow output state (i.e., significant feedback regulation) to benefit from the following: when the air pressure flow at the load end is reduced (even the flow is reduced to 0), the feedback regulation of the pressure reducing valve 10 cannot be realized quickly, and obvious air pressure overshoot occurs instantaneously, resulting in output air pressure overshoot. Compared with the application of a standard product of the pressure reducing valve, the air flow channel continuously consumes the output air pressure according to the fixed flow, which directly accelerates the recovery process of the overshoot of the output air pressure and reduces the time required for the output air pressure to be reduced from the overshoot to be consistent with the set air pressure.
It should be noted that the pressure reducing device can be used for a dispensing controller which can discharge glue by fast repetition (the intermittent time from the last glue discharge to the next glue discharge is not more than 500 ms). Compared with the prior art, the pressure reducing device can recover the output air pressure of the pressure reducing device higher than the set air pressure to be consistent with the set air pressure in a shorter time due to the air flow channel arranged on the special-shaped pipe joint 40. When the pressure reducing device is applied to the dispensing controller, the time interval of repeated dispensing can be greatly reduced, and the dispensing effect with consistent height can be obtained.
Therefore, the special pipe joint 40 is connected to the air outlet of the pressure reducing valve 10, the air flow channel from the pipe cavity to the outer surface is arranged on the special pipe joint 40, the pressure reducing device is simple in structure, overshoot of output air pressure can be weakened, the output air pressure higher than the set air pressure can be recovered to be consistent with the set air pressure in a shorter time, and particularly the consistency of working air pressure when the dispensing controller is used for dispensing rapidly and repeatedly can be improved.
According to some specific embodiments of the invention, the minimum diameter of the air flow channel is not more than 1mm or the minimum cross-sectional area is not more than 1mm2. The air flow channel is used for continuous low flow leakage of high pressure air, the key to low flow leakage being that the narrowest point of the air flow channel cannot be too large.
That is, different narrowest apertures of the airflow channel may be set according to specific application conditions of the load 21, and the time required for the output air pressure to decrease from the overshoot to the pressure consistent with the set air pressure is tested in detail, so as to obtain the optimal airflow channel flow rate and narrowest aperture of the airflow channel suitable for the specific application conditions of the load 21 from the test process.
Preferably, the load 21 is a pneumatic control element or a pneumatic actuator, the air pressure source 50 provides a stable output air pressure for the load 21, and the load 21 acts according to the output air pressure.
In summary, by connecting the shaped pipe joint 40 to the air outlet of the pressure reducing valve 10, the shaped pipe joint 40 is provided with an air flow passage from the pipe cavity to the outer surface, the pressure reducing device not only has a simple structure, but also can reduce the overshoot of the output air pressure and recover the output air pressure higher than the set air pressure to be consistent with the set air pressure in a shorter time, and especially can improve the consistency of the working air pressure when the dispensing controller rapidly repeats dispensing.
According to the utility model discloses some glue controller of second aspect embodiment includes above-mentioned embodiment pressure relief device.
According to an embodiment of the present invention, the load 21 includes the discharge valve 22 and the glue outlet pipe, the air inlet of the discharge valve 22 is connected to the special pipe joint 40, and the glue outlet pipe is connected to the gas outlet of the discharge valve 22.
Specifically, as shown in fig. 2, when the pressure reducing device is applied to the dispensing controller, the air inlet of the discharge valve 22 is connected to the special pipe joint 40, and the glue outlet pipeline is connected to the air outlet of the discharge valve 22 through the dispensing air pressure output interface 70 so as to control the glue outlet process. When the pressure reducing device is applied to the dispensing controller, an air inlet of the pressure reducing device is connected to an input port of a working air source of the dispensing controller, and one end of the special pipe joint 40 with an air flow channel, which is connectable with the hose 60, is connected to an air inlet of the discharge valve 22. The high-pressure air input interface 50 and the dispensing air pressure output interface 70 are external interfaces of the dispensing controller, an air pressure output port of the pressure reducing device is directly connected to an air inlet of the exhaust valve 22, and the narrowest aperture of an air flow channel of the special-shaped pipe joint 40 is tested and determined according to applied dispensing parameters, so that the time required by the pressure reducing device to reduce the output air pressure of the pressure reducing device from overshooting to consistent with the set air pressure is reduced to the greatest extent.
It should be noted that, in the application of the pneumatic dispensing controller, the exhaust valve 22 of the pressure reducing device is a normally closed exhaust valve, that is, the pressure reducing device is connected to an air inlet of the normally closed exhaust valve. When the dispensing controller does not execute the dispensing operation, the discharge valve 22 is in a closed state, and the gas flow at the load end of the pressure reducing device is zero; when the glue discharging operation is finished, the discharge valve 22 is switched from a conducting state to a closed state (the glue discharging principle is that the set working air pressure output by the pressure reducing device flows into the cavity of the glue barrel through the discharge valve 22 to extrude the glue solution out of the glue solution output end at the tail end of the glue barrel), and the air flow at the load end of the pressure reducing device is suddenly reduced to zero. The gas output flow of the discharge valve 22 is suddenly reduced to zero, so that the output air pressure of the pressure reducing valve 10 is overshot, the pressure reducing device can reduce the time required for reducing the output air pressure from overshooting to consistent with the set air pressure, and the dispensing controller can execute dispensing operation in a short dispensing repeating cycle, so that the dispensing efficiency is improved, and consistent dispensing accuracy is ensured.
According to the utility model discloses an embodiment, the controller is glued to point still includes gas holder 23, and gas holder 23 is established between special-shaped pipe joint 40 and discharge valve 22 and both ends link to each other with special-shaped pipe joint 40 and discharge valve 22 respectively, and gas holder 23 is glued the controller at point and is begun the decline of gluing in the twinkling of an eye suppression pressure relief device output air pressure to glue the controller and end the overshooting of gluing in the twinkling of an eye suppression pressure relief device output air pressure.
Specifically, as shown in fig. 3, when the pressure reducing device is applied to the dispensing controller, the air storage tank 23 is connected between the air pressure output port of the pressure reducing device and the air inlet of the discharge valve 22, and both ends of the air storage tank 23 are respectively connected to one end of the special pipe joint 40, to which the hose 60 is connectable, and the load 21. The air storage tank 23 inhibits the reduction of the output air pressure of the pressure reducing device at the moment when the dispensing controller starts to discharge the glue; the air tank 23 suppresses overshoot of the output air pressure of the pressure reducing device at the moment when the dispensing controller finishes dispensing. This can further shorten the time required for the pressure reducing device to reduce the output pressure thereof from the overshoot to the set pressure.
According to the utility model discloses a still another embodiment, the point is glued the controller and is still included speed control valve 24, and speed control valve 24 establishes between special-shaped pipe joint 40 and discharge valve 22 and both ends link to each other with special-shaped pipe joint 40 and discharge valve 22 respectively, and speed control valve 24 can be used for adjusting the maximum flow that pressure relief device can export.
That is, as shown in fig. 4, the speed control valve 24 is connected in series between the pneumatic output port of the pressure reducing device and the inlet port of the discharge valve 22, and both ends of the speed control valve 24 are connected to one end of the shaped pipe joint 40 to which the hose 60 can be connected and the load 21 (inlet port of the discharge valve of the dispensing controller), respectively. The speed control valve 24 is used for adjusting the maximum flow output by the pressure reducing device, and the specific air flow speed of the speed control valve 24 is tested and determined according to the specific dispensing parameters of the application. Therefore, the maximum flow output by the pressure reducing device is adjusted according to the specific dispensing parameters of the application, and the time required for the pressure reducing device to reduce the output air pressure of the pressure reducing device from overshoot to be consistent with the set air pressure is further shortened.
The utility model discloses an in one embodiment, the point is glued the controller and is still included speed control valve 24, and speed control valve 24 establishes between special-shaped pipe joint 40 and gas holder 23 and both ends link to each other with special-shaped pipe joint 40 joinable hose 60's one end and gas holder 23 respectively, and speed control valve 24 can be used for adjusting the maximum flow that pressure relief device can export.
That is, as shown in fig. 5, the speed control valve 24 and the air tank 23 are connected in series between the air pressure output port of the pressure reducing device and the air inlet port of the discharge valve 22. Thereby, the time required for the pressure reducing device to reduce its output air pressure from the overshoot to the pressure corresponding to the set air pressure can be shortened to a greater extent.
Preferably, the pressure reducing device is integrated with the speed control valve 24, and particularly, as shown in fig. 6, the union 40 is integrated with the speed control valve 24 and is hermetically and hard-connected with the pressure reducing valve 10, and the number of components and the space occupation are reduced by the integration of the components.
Optionally, the dispensing controller further includes a reducing pipe 25, the reducing pipe 25 is disposed between the special pipe joint 40 and the air storage tank 23, and two ends of the reducing pipe 25 are respectively connected to the special pipe joint 40 and the air storage tank 23.
That is, as shown in fig. 7, a reducing pipe 25 is connected in series between the pneumatic output port of the pressure reducing device and the air inlet port of the discharge valve 22, and both ends of the reducing pipe 25 are connected to one end of a hose 60 connectable to a profile pipe joint 40 of the pressure reducing device and the air tank 23, respectively. The reducer pipe 25 connection can achieve the same performance at a lower cost than the speed control valve 24.
According to an embodiment of the present invention, the pressure reducing valve 10 is formed as an electric proportional valve or an electric air pressure reducing valve 10. It should be noted that the discharge valve 22 is formed as a two-position three-way electromagnetic valve, and has a simple structure and is convenient to adjust.
Preferably, the pressure reducing valve 10 is an electric proportional valve or an electric air pressure reducing valve, and has a simple structure and is convenient to adjust.
In summary, when the pressure reducing device is applied to the dispensing controller, the time interval between repeated dispensing can be greatly reduced, and the dispensing effect with consistent height can be obtained.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A pressure relief device for placement between a source of pneumatic pressure and a load, said pressure relief device comprising:
the pressure reducing valve is provided with an air inlet, an air outlet and an air outlet, the air inlet is connected with the air pressure source, and the air outlet is connected with the load to provide output air pressure for the load;
the control module is electrically connected with the pressure reducing valve and sends an electric signal to the pressure reducing valve to set the output air pressure of the pressure reducing valve;
the special pipe joint is internally limited with a pipe cavity which is communicated along the axial direction of the special pipe joint, the outer wall surface of the special pipe joint is provided with one or more airflow channels which are communicated with the pipe cavity, one end of the special pipe joint is connected with the load, and the other end of the special pipe joint is connected with the air outlet.
2. The pressure relief device of claim 1, wherein the smallest diameter of the gas flow passage is no greater than 1mm or the smallest cross-sectional area is no greater than 1mm2。
3. The pressure relief device of claim 1, wherein the load is a pneumatic control element or a pneumatic actuator.
4. A dispensing controller comprising the pressure reducing device of any one of claims 1-3.
5. The dispensing controller of claim 4, wherein the load comprises:
a discharge valve, an air inlet of which is connected with the special pipe joint;
and the glue outlet pipeline is connected with the gas outlet of the discharge valve.
6. The dispensing controller of claim 5, further comprising:
the air storage tank is arranged between the special-shaped pipe joint and the discharge valve, two ends of the air storage tank are respectively connected with the special-shaped pipe joint and the discharge valve, the air storage tank inhibits the reduction of the output air pressure of the pressure reducing device at the moment when the glue dispensing controller starts to dispense glue, and inhibits the overshoot of the output pressure of the pressure reducing device at the moment when the glue dispensing controller finishes dispensing glue.
7. The dispensing controller of claim 5, further comprising:
the speed control valve is arranged between the special-shaped pipe joint and the discharge valve, two ends of the speed control valve are respectively connected with the special-shaped pipe joint and the discharge valve, and the speed control valve can be used for adjusting the maximum flow output by the pressure reducing device.
8. The dispensing controller of claim 6, further comprising:
the speed control valve is arranged between the special-shaped pipe joint and the gas storage tank, two ends of the speed control valve are respectively connected with the special-shaped pipe joint and the gas storage tank, and the speed control valve can adjust the maximum flow output by the pressure reducing device.
9. The dispensing controller of claim 8, wherein the pressure relief device is integrated with the speed control valve.
10. The dispensing controller of claim 6, further comprising: the reducer pipe is arranged between the special-shaped pipe joint and the gas storage tank, and two ends of the reducer pipe are respectively connected with the special-shaped pipe joint and the gas storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964104.2U CN210159889U (en) | 2019-06-25 | 2019-06-25 | Pressure reducing device and dispensing controller with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964104.2U CN210159889U (en) | 2019-06-25 | 2019-06-25 | Pressure reducing device and dispensing controller with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210159889U true CN210159889U (en) | 2020-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920964104.2U Withdrawn - After Issue CN210159889U (en) | 2019-06-25 | 2019-06-25 | Pressure reducing device and dispensing controller with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210159889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102443A (en) * | 2019-06-25 | 2019-08-09 | 常州铭赛机器人科技股份有限公司 | Decompressor and dispensing controller with it |
-
2019
- 2019-06-25 CN CN201920964104.2U patent/CN210159889U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102443A (en) * | 2019-06-25 | 2019-08-09 | 常州铭赛机器人科技股份有限公司 | Decompressor and dispensing controller with it |
| CN110102443B (en) * | 2019-06-25 | 2024-05-17 | 常州铭赛机器人科技股份有限公司 | Pressure reducing device and dispensing controller with same |
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