Pressure regulating device

Abstract

The utility model belongs to the technical field of colloid conveying, and relates to a pressure regulating device which comprises a valve body and at least one air cylinder, an inlet hole and at least one outlet hole are formed in the valve body, a plunger is further arranged in the valve body, and the plunger is in linkage with an output shaft of the air cylinder; the air cylinder is used for controlling the movement of the plunger so as to communicate the inlet hole with the outlet hole or block the communication between the inlet hole and the outlet hole; according to the technical scheme, the input pressure can be controlled through the air cylinder and acts on the plunger through the output shaft, so that movement of the plunger is controlled, the inlet hole and the discharge hole are communicated or blocked, the adjusting structure is simple, pressure adjustment is convenient and easy, and operation is convenient and fast. The pressure regulation is accurate, the pressure data is visualized, meanwhile, the number of the air cylinders corresponds to that of the discharge holes, the multiple air cylinders can be arranged on the valve body to control the multiple discharge holes to carry out pressure regulation respectively, and therefore one valve body can output multiple colloids with different pressures.

Description

Technical Field

[0001] The present application relates to the technical field of colloid delivery, and more specifically, to a pressure regulating device. Background Art

[0002] A pressure regulating valve is a pressure control device whose main function is to automatically adjust the flow rate of the medium in the pipeline system to keep the pressure of the system or equipment stable within the set range. It is commonly found in liquid and gas pipelines. Due to its high reliability, adjustment flexibility and easy installation, it is widely used in industrial production, civil facilities, transportation and other fields.

[0003] To this end, the invention patent with publication number CN110566703B provides a low-temperature precision pressure regulating valve, including a valve body, an inlet end and an outlet end are arranged on the valve body, and a pressure regulating assembly, an upper diaphragm assembly, an intermediate diaphragm, a lower diaphragm assembly and a main valve core assembly are arranged in sequence from top to bottom inside the valve body, the knob assembly is connected to the pressure regulating assembly, the upper diaphragm assembly includes an upper diaphragm fixing seat, a floating diaphragm and an upper diaphragm arranged in the upper diaphragm fixing seat, and the upper diaphragm is fixed in the valve body; a high-pressure airflow is input from the inlet end, and the internal pressure of the valve body is adjusted by the pressure regulating assembly, the upper diaphragm assembly, the intermediate diaphragm, the lower diaphragm assembly and the main valve core assembly to form a force balance with the output pressure. During the balancing process, the upper diaphragm assembly, the intermediate diaphragm and the lower diaphragm assembly move up and down due to the unbalanced pressure, and the floating diaphragm floats in the upper diaphragm fixing seat with the up and down movement of the upper diaphragm assembly to balance the tension on the upper diaphragm except the gas pressure.

[0004] The above patent has the following problems: the implementation method of the above patent is diaphragm type, and the knob screw adjusts the compression state of the pressure regulating spring by rotating the knob arranged above it to achieve the purpose of adjusting the initial pressure. The adjustment structure is complicated, and the pressure regulating spring is prone to failure after long-term use, resulting in inaccurate pressure regulation, and it can only regulate the pressure of one inlet and outlet, and cannot meet the needs of multi-port pressure regulation. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present application is that the prior art uses a pressure-adjusting spring to adjust the pressure, the adjustment structure is complex, and the pressure-adjusting spring is prone to failure after long-term use, resulting in inaccurate pressure adjustment.

[0006] In order to solve the above-mentioned technical problems, an embodiment of the present application provides a pressure regulating device, which adopts the technical solution described below: it includes a valve body and at least one cylinder arranged on the valve body, the valve body is provided with an inlet hole and at least one outlet hole, and a plunger is also provided in the valve body, and the plunger is linked to the output shaft of the cylinder; the cylinder is used to control the movement of the plunger to connect the inlet hole and the outlet hole or block the connection between the inlet hole and the outlet hole.

[0007] Furthermore, an adjustment channel is provided between the inlet hole and the outlet hole, and the plunger is axially movably provided in the adjustment channel.

[0008] Furthermore, the plunger is provided with a through hole and a connecting cavity communicated with the through hole; when the force exerted by the cylinder on the plunger is greater than the force exerted by the discharge on the plunger at the discharge hole, the plunger moves toward the discharge hole to align the through hole with the inlet hole, so that the inlet hole communicates with the discharge hole through the through hole and the connecting cavity; when the force exerted by the discharge on the plunger at the discharge hole is greater than the force exerted by the cylinder on the plunger, the plunger resets to block the communication between the inlet hole and the discharge hole.

[0009] Furthermore, an annular groove is formed on the outer peripheral surface of the plunger located at the through hole.

[0010] Furthermore, a sealing groove is provided on the outer peripheral surface of the plunger, and a sealing ring is provided in the sealing groove.

[0011] Furthermore, a raised limiting rib is provided at one end of the plunger close to the cylinder.

[0012] Furthermore, the valve body is provided with an exhaust hole, and an exhaust component is detachably connected to the exhaust hole.

[0013] Furthermore, the inlet hole is connected to the regulating channel through a first channel, the exhaust member is coaxially arranged with the first channel, and the regulating channel is coaxially arranged with the discharge hole.

[0014] Furthermore, a joint is provided on the discharge hole, and the discharge hole is detachably connected to the valve body.

[0015] Furthermore, the cylinder is detachably connected to the valve body via a connecting column.

[0016] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects: the present application controls the input pressure through the cylinder and acts on the plunger through the output shaft, thereby controlling the movement of the plunger to connect the inlet hole and the outlet hole or block the connection between the inlet hole and the outlet hole. The adjustment structure is simple, the pressure adjustment is convenient and simple, the pressure adjustment is accurate and the pressure data is visualized. At the same time, the number of the cylinders corresponds to the number of the outlet holes. A plurality of cylinders can be arranged on the valve body of the present application to control the multiple outlet holes for separate pressure adjustment, so that one valve body has a plurality of colloid outputs with different pressures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme of the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the voltage regulating device;

[0019] Figure 2 It is an exploded view of the voltage regulating device;

[0020] Figure 3 It is one of the cross-sectional views of the pressure regulating device;

[0021] Figure 4 yes Figure 3 A is an enlarged schematic diagram;

[0022] Figure 5 yes Figure 1 Schematic diagram of the structure of the middle plunger;

[0023] Figure 6 This is the second cross-sectional view of the pressure regulating device.

[0024] Figure numerals: 1. valve body; 11. inlet hole; 12. outlet hole; 13. adjustment channel; 14. exhaust hole; 15. first channel; 2. cylinder; 21. output shaft 22. top head; 3. plunger; 31. through hole; 32. connecting cavity; 33. annular groove; 34. sealing groove; 35. limit rib; 4. sealing ring; 5. exhaust member; 6. joint; 7. connecting column. DETAILED DESCRIPTION

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0028] Please refer to Figure 1-Figure 6 , the embodiment of the present application provides a pressure regulating device, comprising: a valve body 1 and at least one cylinder 2 arranged on the valve body 1, the valve body 1 is provided with an inlet hole 11 and at least one outlet hole 12, the valve body 1 is further provided with a plunger 3, the plunger 3 is linked with the output shaft 21 of the cylinder 2; the cylinder 2 is used to control the movement of the plunger 3 to connect the inlet hole 11 and the outlet hole 12 or block the connection between the inlet hole 11 and the outlet hole 12. The present application controls the input pressure through the cylinder 2 and acts on the plunger 3 through the output shaft 21, thereby controlling the movement of the plunger 3 to connect the inlet hole 11 and the outlet hole 12 or block the connection between the inlet hole 11 and the outlet hole 12. The regulating structure is simple, the pressure regulation is convenient and simple, the pressure regulation is accurate, and the pressure data is visualized. At the same time, the number of the cylinders 2 and the outlet holes 12 corresponds. The valve body 1 of the present application can be provided with multiple cylinders 2 to control the multiple outlet holes 12 for separate pressure regulation, so that one valve body 1 has multiple colloid outputs with different pressures.

[0029] Furthermore, an adjustment channel 13 is provided between the inlet hole 11 and the outlet hole 12, and the plunger 3 is axially movable in the adjustment channel 13. Compared with the prior art scheme that the plunger adopts a rotational connection between the inlet hole and the outlet hole, the axially movable plunger 3 can better withstand the force of the cylinder 2, and the force of the output shaft 21 can directly act on the plunger 3, avoiding the need for the output shaft 21 to convert linear movement into rotation. The adjustment structure is simple, the pressure adjustment is convenient and simple, the pressure adjustment is accurate, and the pressure data is visualized. At the same time, when the pressure of the outlet hole 12 reaches the maximum adjusted pressure, that is, the output force of the output shaft 21, the plunger 3 can be reset in time to block the colloid from continuing to output, thereby improving the accuracy of the pressure regulating device.

[0030] Further, the plunger 3 is provided with a through hole 31 and a connection cavity 32 communicating with the through hole 31; when the force exerted by the cylinder 2 on the plunger 3 is greater than the force exerted by the discharge on the plunger 3 at the discharge hole 12, the plunger 3 moves towards the discharge hole 12 to align the through hole 31 with the inlet hole 11, so that the inlet hole 11 communicates with the discharge hole 12 through the through hole 31 and the connection cavity 32; when the force exerted by the discharge on the plunger 3 at the discharge hole 12 is greater than the force exerted by the cylinder 2 on the plunger 3, the plunger 3 resets to block the communication between the inlet hole 11 and the discharge hole 12. Further, the inlet hole 11 communicates with the adjustment channel 13 through the first channel 15, as shown in the appendix Figure 6 As shown, when communicating, the hot melt adhesive enters from the inlet hole 11, passes through the through hole 31 and the connection cavity 32 in sequence, and then discharges from the discharge hole 12; as shown in the appendix Figure 3 As shown, when the plunger 3 resets, the outer peripheral surface of the plunger 3 seals the first channel 15 between the adjustment channel 13 and the inlet hole 11 to block the flow of the hot melt adhesive. The adjustment structure is simple, the adjustment pressure is convenient and simple, the pressure regulation is accurate and the pressure data is visualizable.

[0031] As shown in the appendix Figure 6 As shown, further, the pressure of the colloid entering the inlet hole 11 is P0, the air pressure introduced into one of the cylinders 2 is P1, the pressure at the discharge hole 12 corresponding to the cylinder 2 is P2, the effective cross-sectional area of the cylinder 2 is S1, and the effective cross-sectional area of the plunger 3 is S2. When the pressure regulating device starts to work, the above parameters satisfy S2*P2 < S1*P1. At this time, the plunger 3 remains open, and the hot melt adhesive enters from the inlet hole 11, passes through the through hole 31 and the connection cavity 32 in sequence, and then discharges from the discharge hole 12. As the pressure P2 at the discharge hole 12 gradually increases, when the above parameters satisfy S2*P2 > S1*P1, the plunger 3 moves towards the cylinder 2, that is, moves to the right, and the area of the through hole 31 communicating with the first channel 15 gradually becomes smaller. The pressure P2 at the discharge hole 12 starts to decrease, and finally the plunger 3 resets. At this time, the outer peripheral surface of the plunger 3 seals the first channel 15 between the adjustment channel 13 and the inlet hole 11, and at the same time the above parameters satisfy the following formula: S2*P2 = S1*P1; similarly, by controlling the air pressure P4 introduced into the other cylinder 2, the magnitude of the pressure P3 at the discharge hole 12 corresponding to it can be controlled. P1 and P4 can be the same or different, so as to realize multi-channel pressure regulation, and each channel pressure can be different. The pressures P2 and P3 at the discharge hole 12 are determined by the air pressures P1 and P4 introduced into the cylinder 2. The adjustment pressure is convenient and simple, the pressure regulation is accurate and the pressure data is visualizable.

[0032] Furthermore, the plunger 3 is provided with an annular groove 33 on the outer peripheral surface of the through hole 31. The annular groove 33 increases the outflow channel of the hot melt adhesive, so that the hot melt adhesive can enter from both ends of the through hole 31, and can also prevent the hot melt adhesive from not being able to flow into the connecting cavity 32 when the through hole 31 is not well aligned with the entry hole 11 after the plunger 3 rotates.

[0033] Furthermore, when the through hole 31 is not well aligned with the entry hole 11, the hot melt adhesive enters from the entry hole 11, passes through the first channel 15 and enters the annular groove 33, then enters the connecting cavity 32 from the through hole 31 on the bottom wall of the annular groove 33, and is discharged from the discharge hole 12; and when the through hole 31 is aligned with the entry hole 11, the hot melt adhesive directly passes through the through hole 31 from the first channel 15 and enters the connecting cavity 32, and then is discharged from the discharge hole 12 without being guided by the annular groove 33.

[0034] Furthermore, a sealing groove 34 is provided on the outer circumferential surface of the plunger 3, and a sealing ring 4 is provided in the sealing groove 34. The sealing ring 4 can seal both sides of the annular groove 33 on the plunger 3 to prevent the hot melt adhesive from flowing out of the regulating channel 13 toward the cylinder 2 when the inlet hole 11 and the outlet hole 12 are connected, and to prevent the hot melt adhesive from flowing out of the regulating channel 13 toward the cylinder 2 and toward the outlet hole 12 after the plunger 3 blocks the connection between the inlet hole 11 and the outlet hole 12.

[0035] Furthermore, a raised limiting rib 35 is provided at one end of the plunger 3 close to the cylinder 2. The limiting rib 35 can limit the distance that the plunger 3 moves toward the discharge hole 12, preventing the plunger 3 from being completely inserted into the regulating channel 13, and the limiting rib 35 can also play a positioning role, that is, when the limiting rib 35 abuts against the outer end surface of the valve body 1, the through hole 31 is connected with the inlet hole 11, that is, the through hole 31 is aligned with the first channel 15, which facilitates the rapid circulation of the hot melt adhesive.

[0036] Furthermore, the valve body 1 is provided with an exhaust hole 14, and the exhaust member 5 is detachably connected to the exhaust hole 14. When the pressure of the valve body 1 needs to be reduced, the exhaust member 5 is loosened appropriately, so that the exhaust hole 14 allows excess hot melt adhesive to flow out, thereby maintaining a set pressure level, ensuring that the pressure in the valve body 1 is always maintained within a set range, thereby protecting various components in the valve body 1 from the influence of excessive pressure.

[0037] Furthermore, the inlet hole 11 is connected to the regulating channel 13 through the first channel 15, the exhaust member 5 is coaxially arranged with the first channel 15, and the regulating channel 13 is coaxially arranged with the discharge hole 12. The coaxial arrangement makes the exhaust member 5 and the first channel 15 and the regulating channel 13 and the discharge hole 12 to be straight through holes without bends, which is easy to process, and convenient for flushing the residual colloid in the exhaust member 5, the first channel 15, the regulating channel 13 and the discharge hole 12, avoiding the residual colloid stuck at the bend, which is difficult to clean, and is easy to clean and maintain.

[0038] Furthermore, a joint 6 is provided on the discharge hole 12, and the discharge hole 12 is detachably connected to the valve body 1. The cylinder 2 is detachably connected to the valve body 1 via a connecting column 7. At the same time, the plunger 3 and the exhaust member 5 are also detachably connected to the valve body 1, that is, all parts on the valve body 1 can be disassembled, which facilitates all-round cleaning of the valve body 1 and parts such as the plunger 3, the exhaust member 5 and the joint 6.

[0039] Furthermore, a top head 22 is provided on the output shaft 21, and the output shaft 21 abuts against the plunger 3 through the top head 22. The top head 22 and the connecting column 7 are made of high-temperature resistant heat-insulating materials, which play the role of heat insulation and connection installation, and prevent the high-temperature hot melt adhesive from being transmitted to the cylinder 2 through the output shaft 21 and the connecting column 7, resulting in the cylinder 2 The operating temperature is too high; the sealing ring 4 is made of high-temperature resistant and corrosion-resistant material to avoid deformation and damage of the sealing ring 4, and play a good sealing role, so that the pressure regulating device is suitable for high temperature and complex medium environments.

[0040] Furthermore, the pressure regulating device of the present application is not only suitable for the delivery of hot melt adhesive, but also suitable for other liquids, gases, etc., and can also regulate the pressure of highly corrosive liquids and gases.

[0041] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A voltage regulating device, comprising: A valve body (1) and at least one cylinder (2) arranged on the valve body (1), the valve body (1) being provided with an inlet hole (11) and at least one outlet hole (12), characterized in that a plunger (3) is also arranged inside the valve body (1), the plunger (3) being linked to an output shaft (21) of the cylinder (2); the cylinder (2) being used to control the movement of the plunger (3) so as to connect the inlet hole (11) and the outlet hole (12) or to block the connection between the inlet hole (11) and the outlet hole (12).

2. The voltage regulating device according to claim 1, characterized in that: An adjustment channel (13) is provided between the inlet hole (11) and the outlet hole (12), and the plunger (3) is axially movable in the adjustment channel (13).

3. The voltage regulating device according to claim 2, characterized in that: The plunger (3) is provided with a through hole (31) and a connecting cavity (32) communicating with the through hole (31); when the force exerted by the cylinder (2) on the plunger (3) is greater than the force exerted by the discharge on the plunger (3) at the discharge hole (12), the plunger (3) moves toward the discharge hole (12) to align the through hole (31) with the inlet hole (11), so that the inlet hole (11) communicates with the discharge hole (12) through the through hole (31) and the connecting cavity (32); when the force exerted by the discharge on the plunger (3) at the discharge hole (12) is greater than the force exerted by the cylinder (2) on the plunger (3), the plunger (3) is reset to block the communication between the inlet hole (11) and the discharge hole (12).

4. The voltage regulating device according to claim 3, characterized in that: The plunger (3) is provided with an annular groove (33) on the outer peripheral surface of the through hole (31).

5. The voltage regulating device according to claim 4, characterized in that: A sealing groove (34) is also provided on the outer peripheral surface of the plunger (3), and a sealing ring (4) is provided in the sealing groove (34).

6. The voltage regulating device according to claim 5, characterized in that: A protruding limiting rib (35) is provided at one end of the plunger (3) close to the cylinder (2).

7. The voltage regulating device according to claim 2, characterized in that: The valve body (1) is also provided with an exhaust hole (14), and an exhaust component (5) is detachably connected to the exhaust hole (14).

8. The voltage regulating device according to claim 7, characterized in that: The inlet hole (11) is connected to the regulating channel (13) through a first channel (15); the exhaust member (5) is coaxially arranged with the first channel (15); and the regulating channel (13) is coaxially arranged with the discharge hole (12).

9. The voltage regulating device according to any one of claims 1 to 8, characterized in that: A joint (6) is provided on the discharge hole (12), and the discharge hole (12) is detachably connected to the valve body (1).

10. The voltage regulating device according to any one of claims 1 to 8, characterized in that: The cylinder (2) is detachably connected to the valve body (1) via a connecting column (7).

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