Rotary plunger valve

Abstract

The present invention relates to a rotary plunger valve, comprising: a supporting plate; a valve body assembly mounted on one end of the supporting plate; the valve body assembly comprising a valve body and a plunger rod; the plunger rod being provided with a working end and a transfer end; an inner cavity being provided inside the valve body; the space between the end of the working end and the inner cavity forming a glue storage chamber; a cut surface being provided on one side of the working end, the cut surface being spaced apart from the inner wall of the inner cavity, a gap being formed between the cut surface and the inner wall of the inner cavity, the gap being used for glue to flow through; and a driving assembly mounted on the other end of the supporting plate; the driving assembly comprising a moving seat, a rotary cylinder and a driving electric cylinder; the piston rod of the driving electric cylinder being used to connect to the moving seat; the piston rod of the rotary cylinder being used to coaxially connect to the transfer end. The above-mentioned rotary plunger valve has a simple structure and is easy to assemble and disassemble. A plunger rod is installed in the inner cavity of the valve body, eliminating the conventional plunger structure. Repeated disassembly and assembly will not damage the overall fitting accuracy, thereby ensuring sealing performance.

Description

Technical Field

[0001] The present invention relates to the technical field of plunger valves, in particular to a rotary plunger valve. Background Art

[0002] A glue dispenser is an automated machine that controls and applies glue to the surface or interior of a product. It is widely used in the electronics, lighting, and automotive industries. The plunger valve is a key component of a glue dispenser. If unused for an extended period, the plunger valve's internal cavity can become clogged due to solidified glue, necessitating manual cleaning and unblocking.

[0003] Conventional plunger valves consist of a valve body, bonnet, stem, plunger, orifice frame, and sealing ring. The valve stem drives the plunger to move up and down within the orifice frame to open and close the valve. However, this type of plunger valve is complex and time-consuming to disassemble. In particular, the fitting precision between the plunger and the valve body must be extremely high. Repeated disassembly and assembly can easily cause eccentricity between the plunger and the inner cavity of the valve body, compromising the overall fit and resulting in a decrease in sealing performance, impacting dispensing quality. Summary of the Invention

[0004] Based on this, the present invention provides a rotary plunger valve with a simple structure and easy disassembly and assembly. A plunger rod is installed in the inner cavity of the valve body, eliminating the conventional plunger structure. Repeated disassembly and assembly will not destroy the overall fitting accuracy, thereby ensuring sealing performance.

[0005] In order to achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0006] A rotary plunger valve, comprising:

[0007] Loading plate;

[0008] and a valve body assembly installed at one end of the supporting plate; the valve body assembly includes a valve body installed on one end of the supporting plate, and a plunger rod movably installed inside the valve body; the plunger rod is provided with a working end and a transfer end; the interior of the valve body is provided with a cylindrical inner cavity, the inner cavity passes through one end of the valve body, and the working end is inserted into the interior of the inner cavity after passing through one end of the valve body; a glue inlet channel is provided on the valve body on one side corresponding to the inner cavity, and a glue outlet channel is provided on the valve body on the other side corresponding to the inner cavity, and the glue outlet channel and the glue inlet channel are both connected to the inner cavity; the diameter of the working end is equal to the inner diameter of the inner cavity, and the space between the end of the working end and the inner cavity forms a glue storage chamber; a section is provided on one side of the working end, and the section is spaced apart from the inner wall of the inner cavity, and a gap is formed between the section and the inner wall of the inner cavity, and the gap is used for glue to flow through; and

[0009] A driving assembly is installed at the other end of the supporting plate; the driving assembly includes a moving seat slidably installed in the middle of the supporting plate, a rotating cylinder installed on the moving seat, and a driving electric cylinder installed on the end of the supporting plate away from the valve body; the piston rod of the driving electric cylinder is used to connect the moving seat to drive the moving seat and the supporting plate to slide relative to each other, thereby driving the plunger rod to move; the piston rod of the rotating cylinder is used to coaxially connect the adapter end to drive the plunger rod to rotate.

[0010] The above-mentioned rotary plunger valve has a simple structure and is easy to disassemble and assemble. A plunger rod is installed in the inner cavity of the valve body, eliminating the conventional plunger structure. Repeated disassembly and assembly will not damage the overall fitting accuracy, thereby ensuring sealing performance.

[0011] In one embodiment, the valve body includes a valve body main body, end plates installed at opposite ends of the valve body main body, and a sealing ring clamped at the connection between the valve body main body and the end plates; the inner cavity, the glue inlet channel and the glue outlet channel are all arranged on the valve body main body.

[0012] In one embodiment, one of the end plates is provided with a through hole, the through hole is connected to the inner cavity, and the working end is inserted into the inner cavity after passing through the through hole.

[0013] In one embodiment, the valve body assembly further includes a glue hose connected to one side of the valve body, and a glue dispensing head connected to the other side of the valve body; the glue hose is used to connect to the glue inlet channel, and the glue dispensing head is used to connect to the glue outlet channel.

[0014] In one embodiment, the movable seat is slidably connected to the bearing plate via a guide rail pair, and the piston rod of the rotary cylinder is coaxially connected to the adapter end via a coupling.

[0015] In one embodiment, the movement direction of the piston rod of the driving electric cylinder is consistent with the length direction of the plunger rod, and the movement direction of the piston rod of the driving electric cylinder is consistent with the length direction of the piston rod of the rotary cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic perspective view of a rotary plunger valve according to one embodiment of the present invention;

[0017] Figure 2 for Figure 1 An exploded schematic diagram of a rotary plunger valve is shown;

[0018] Figure 3 for Figure 1 Schematic diagram of the valve body assembly in the rotary plunger valve in the glue removal state;

[0019] Figure 4 for Figure 1 The diagram shown is a schematic diagram of the dispensing state of the valve body assembly in the rotary plunger valve.

[0020] Description of the accompanying drawings:

[0021] 10-carrying plate;

[0022] 20-valve body assembly, 21-valve body, 211-valve body, 212-end plate, 213-sealing ring, 22-plunger rod, 221-working end, 222-adapter end, 23-rubber hose, 24-dispensing head, 25-inner cavity, 26-glue inlet channel, 27-glue outlet channel, 28-cut surface;

[0023] 30-drive assembly, 31-moving seat, 310-guide pair, 32-rotating cylinder, 320-coupling, 33-drive electric cylinder. DETAILED DESCRIPTION

[0024] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0025] It should be noted that when an element is referred to as being “fixed to” another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] See also Figures 1 to 4 , is a rotary plunger valve according to an embodiment of the present invention, comprising a carrier plate 10 , a valve body assembly 20 mounted on one end of the carrier plate 10 , and a drive assembly 30 mounted on the other end of the carrier plate 10 .

[0028] The valve assembly 20 includes a valve body 21 mounted on one end of the carrier plate 10, a plunger rod 22 movably mounted inside the valve body 21, a rubber dispensing hose 23 connected to one side of the valve body 21, and a rubber dispensing head 24 connected to the other side of the valve body 21. The plunger rod 22 has a working end 221 and a connecting end 222. The working end 221 is movably mounted inside the valve body 21, while the connecting end 222 is located outside the valve body 21 and is used to connect to the drive assembly 30.

[0029] The valve body 21 has a cylindrical inner cavity 25 extending through one end of the valve body 21, allowing the working end 221 of the plunger rod 22 to pass through the end of the valve body 21 and then be inserted into the inner cavity 25. A glue inlet channel 26 is provided on one side of the valve body 21 corresponding to the inner cavity 25, and a glue outlet channel 27 is provided on the other side of the valve body 21 corresponding to the inner cavity 25. Both the glue outlet channel 27 and the glue inlet channel 26 communicate with the inner cavity 25. The glue inlet channel 26 is used to connect to the glue hose 23, while the glue outlet channel 27 is used to connect to the glue dispensing head 24.

[0030] In this embodiment, the diameter of the working end 221 is equal to the inner diameter of the inner cavity 25. The space between the end of the working end 221 and the inner cavity 25 forms a glue storage chamber for storing glue. Furthermore, a cut surface 28 is provided on one side of the working end 221. The cut surface 28 is spaced apart from the inner wall of the inner cavity 25. That is, the cut surface 28 does not completely align with the inner wall of the inner cavity 25. A gap is formed between the cut surface 28 and the inner wall of the inner cavity 25, which allows the glue to flow through. In actual use, by rotating the plunger rod 22, the cut surface 28 is selected to face the glue inlet channel 26 or the glue outlet channel 27 to achieve the glue extraction or dispensing function.

[0031] In this embodiment, the valve body 21 includes a valve body main body 211, end plates 212 installed at opposite ends of the valve body main body 211, and a sealing ring 213 clamped at the connection between the valve body main body 211 and the end plates 212. The inner cavity 25, the glue inlet channel 26, and the glue outlet channel 27 are all provided on the valve body main body 211. Among them, one end plate 212 is provided with a through hole (not shown), which is connected to the inner cavity 25. The working end 221 is inserted into the inner cavity 25 after passing through the through hole. When cleaning, the plunger rod 22, the glue hose 23, and the glue dispensing head 24 can be removed from the interior of the valve body 21, and the inner cavity 25, the glue inlet channel 26, and the glue outlet channel 27 inside the valve body 21 can be flushed with clean water. Compared with the traditional plunger valve, the present invention omits the conventional plunger structure, and repeated disassembly and assembly will not damage the overall matching accuracy, effectively ensuring the sealing performance. Furthermore, the valve body 21 can be quickly disassembled into the valve body main body 211, the end plate 212 and the sealing ring 213, which makes it more convenient to clean the inner cavity 25, the glue inlet channel 26 and the glue outlet channel 27, or replace the sealing ring 213 to ensure the sealing performance.

[0032] The driving assembly 30 includes a moving seat 31 slidably mounted in the middle of the supporting plate 10, a rotating cylinder 32 mounted on the moving seat 31, and a driving electric cylinder 33 mounted on one end of the supporting plate 10 away from the valve body 21; the piston rod of the driving electric cylinder 33 is used to connect the moving seat 31 to drive the moving seat 31 and the supporting plate 10 to slide relative to each other, thereby driving the plunger rod 22 to move; the piston rod of the rotating cylinder 32 is used to coaxially connect to the adapter end 222 to drive the plunger rod 22 to rotate.

[0033] In this embodiment, the movable seat 31 is slidably connected to the supporting plate 10 via the guide rail pair 310 , and the piston rod of the rotary cylinder 32 is coaxially connected to the adapter end 222 via the coupling 320 .

[0034] In this embodiment, the movement direction of the piston rod of the driving electric cylinder 33 is consistent with the length direction of the plunger rod 22 , and the movement direction of the piston rod of the driving electric cylinder 33 is consistent with the length direction of the piston rod of the rotating cylinder 32 .

[0035] When taking glue, Figure 3 As shown, the rotary cylinder 32 drives the plunger rod 22 to rotate so that the cut surface 28 faces the glue inlet channel 26, and then drives the electric cylinder 33 to drive the plunger rod 22 to move toward the outside of the valve body 21. Under the action of the negative pressure inside the valve body 21, the glue is extracted through the glue inlet channel 26 into the glue storage chamber to realize the glue extraction function.

[0036] When dispensing glue, Figure 4 As shown, the rotary cylinder 32 drives the plunger rod 22 to rotate so that the cut surface 28 faces the glue outlet channel 27, and then drives the electric cylinder 33 to drive the plunger rod 22 to move toward the interior of the valve body 21. Under the positive pressure inside the valve body 21, the glue is squeezed out from the glue storage cavity through the glue outlet channel 27 to realize the dispensing function.

[0037] The above-mentioned rotary plunger valve has a simple structure and is easy to disassemble and assemble. A plunger rod 22 is installed in the inner cavity 25 of the valve body 21, eliminating the conventional plunger structure. Repeated disassembly and assembly will not damage the overall matching accuracy, ensuring sealing performance.

[0038] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A rotary plunger valve, characterized in that: include: Loading plate; and a valve body assembly installed at one end of the supporting plate; the valve body assembly includes a valve body installed on one end of the supporting plate, and a plunger rod movably installed inside the valve body; the plunger rod is provided with a working end and a transfer end; the interior of the valve body is provided with a cylindrical inner cavity, the inner cavity passes through one end of the valve body, and the working end is inserted into the interior of the inner cavity after passing through one end of the valve body; a glue inlet channel is provided on the valve body on one side corresponding to the inner cavity, and a glue outlet channel is provided on the valve body on the other side corresponding to the inner cavity, and the glue outlet channel and the glue inlet channel are both connected to the inner cavity; the diameter of the working end is equal to the inner diameter of the inner cavity, and the space between the end of the working end and the inner cavity forms a glue storage chamber; a section is provided on one side of the working end, and the section is spaced apart from the inner wall of the inner cavity, and a gap is formed between the section and the inner wall of the inner cavity, and the gap is used for glue to flow through; and A driving assembly is installed at the other end of the supporting plate; the driving assembly includes a moving seat slidably installed in the middle of the supporting plate, a rotating cylinder installed on the moving seat, and a driving electric cylinder installed on the end of the supporting plate away from the valve body; the piston rod of the driving electric cylinder is used to connect the moving seat to drive the moving seat and the supporting plate to slide relative to each other, thereby driving the plunger rod to move; the piston rod of the rotating cylinder is used to coaxially connect the adapter end to drive the plunger rod to rotate.

2. The rotary plunger valve according to claim 1, characterized in that: The valve body includes a valve body main body, end plates installed at opposite ends of the valve body main body, and a sealing ring clamped at the connection between the valve body main body and the end plates; the inner cavity, the glue inlet channel and the glue outlet channel are all arranged on the valve body main body.

3. The rotary plunger valve according to claim 2, characterized in that: One of the end plates is provided with a through hole, the through hole being connected to the inner cavity, and the working end is inserted into the inner cavity after passing through the through hole.

4. The rotary plunger valve according to claim 1, characterized in that: The valve body assembly further includes a glue taking hose connected to one side of the valve body and a glue dispensing head connected to the other side of the valve body; the glue taking hose is used to connect to the glue inlet channel, and the glue dispensing head is used to connect to the glue outlet channel.

5. The rotary plunger valve according to claim 1, characterized in that: The movable seat is slidably connected to the bearing plate via a guide rail pair, and the piston rod of the rotary cylinder is coaxially connected to the adapter end via a coupling.

6. The rotary plunger valve according to claim 1, characterized in that: The movement direction of the piston rod of the driving electric cylinder is consistent with the length direction of the plunger rod, and the movement direction of the piston rod of the driving electric cylinder is consistent with the length direction of the piston rod of the rotating cylinder.

Images