Feeding device with adjustable one-way valve

Abstract

The utility model discloses a feeding device with an adjustable one-way valve, which comprises a feeding part provided with a first feeding port; the connecting piece comprises a feeding cavity, a discharging port and at least two second feeding ports, and the discharging port and the second feeding ports are respectively communicated with the feeding cavity; the control assembly comprises valve blocks and one-way valves, the second feeding ports are connected with the valve blocks respectively, the valve blocks are provided with valve cavities communicated with the first feeding ports and the second feeding ports, the one-way valves are arranged in the valve cavities, and when the feeding pressure of the one-way valves in the valve cavities is larger than the pressure of the feeding cavities, the valve cavities are communicated with the feeding cavities. And when the feeding pressure of the valve cavity is not greater than the pressure of the feeding cavity, the valve cavity and the feeding cavity are cut off. According to the utility model, the adjustable one-way valve is arranged in the feeding device, and the one-way valve starts feeding only when the feeding pressure of each path is equivalent, so that raw material pollution or inaccurate single component proportioning in a mixture caused by raw material intercommunication between the feeding pipelines when the pressure of a certain feeding pipeline is abnormal is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to mixing device technical field, concretely relates to a feeding device with adjustable check valve. BACKGROUND

[0002] In the production of electrical element products such as capacitors, sensors and insulating parts, insulating glue is often filled in the products to play the role of sealing and insulation. The insulating glue is usually prepared by mixing two or more raw materials in a certain proportion in a mixer. In the current feeding device (taking the feeding of two-component raw materials as an example), the feeding port is usually a tee structure, two feeding ports each feed one of the A and B raw materials, and the third port flows out the mixed material to the mixer for further mixing and uniformity, and then pours out into the product. The existing feeding device mainly has the following defects:

[0003] (1) When the two feeding ports are normally feeding, the A and B raw materials have a certain feeding pressure, and the two feeding pressures are equivalent. However, when the control of the two feeding pressures is out of balance due to various reasons, it is very likely that the high-pressure material in one feeding port will invade the feeding pipeline of the other low-pressure material, causing contamination of the raw materials, and in severe cases, the proportion of single components in the mixed material will be wrong, resulting in abnormal quality of the insulating glue and causing the product to be scrapped.

[0004] (2) When the feeding port and the mixer are located at a low position relative to the raw material feeding device, the raw materials in the feeding pipeline will flow out automatically under the action of gravity, and the pressure in the feeding pipeline cannot be effectively monitored and controlled.

[0005] (3) Although some feeding devices currently have a check valve at the feeding port to solve the problem, most of these solutions have a bulky structure, a large mixed material cavity that is prone to large-scale solidification and deposition, and are inconvenient to maintain and clean. In addition, the feeding pipeline needs to be disassembled to remove the check valve, which can easily cause the raw materials to spill, resulting in contamination of the equipment environment and causing serious allergic reactions for the operator. At the same time, in the existing solutions, the opening of the check valve needs to be adjusted multiple times to achieve the ideal state, which requires a lot of work, and most of them cannot adjust the opening of the check valve. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims to solve at least one of the defects of the prior art, and provides a feeding device with an adjustable check valve.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0008] A feeding device with an adjustable check valve, comprising:

[0009] A feeding member is provided with a first feeding port for feeding mixed materials.

[0010] a connecting piece, the connecting piece comprising a feeding cavity, a discharging port and at least two second feeding ports, the discharging port and the second feeding ports being communicated with the feeding cavity respectively;

[0011] a control assembly, the control assembly comprising a valve block and a one-way valve, the valve block being connected to each of the second feeding ports respectively, the valve block being provided with a valve cavity communicated with the first feeding port and the second feeding ports, the one-way valve being arranged in the valve cavity, the one-way valve being connected to the valve cavity and the feeding cavity when the feeding pressure of the valve cavity is greater than the pressure of the feeding cavity, and the one-way valve being cut off between the valve cavity and the feeding cavity when the feeding pressure of the valve cavity is not greater than the pressure of the feeding cavity.

[0012] Further, the one-way valve comprises a valve rod, a valve core and a telescopic piece, the valve rod being arranged in the valve cavity, the valve rod being connected with the valve core at one end, the valve core being used to connect or cut off the valve cavity and the feeding cavity, and the telescopic piece being used to reset the valve core from the connected position to the cut-off position.

[0013] Further, one end of the valve rod is arranged outside the valve block.

[0014] Further, the telescopic piece is a spring, the spring being arranged in the valve rod and outside the valve block, the spring being used to reset the valve core from the connected position to the cut-off position by the restoring force of the compressed spring.

[0015] Further, the one-way valve further comprises an adjusting piece, the adjusting piece being arranged outside the valve block and being used to adjust the compression amount of the telescopic piece.

[0016] Further, the adjusting piece comprises an adjusting block, the adjusting block being movably arranged outside the valve block, the telescopic piece being arranged between the adjusting block and the valve block, and the compression amount of the telescopic piece being adjusted by changing the position of the adjusting block.

[0017] Further, the adjusting piece further comprises a limiting rod, the limiting rod being arranged outside the valve block and being parallel to the valve rod, the adjusting block being movably arranged in the valve rod and the limiting rod, and the maximum opening of the valve core connecting the valve cavity and the feeding cavity being adjusted by changing the position of the adjusting block in the limiting rod.

[0018] Further, the adjusting piece further comprises a limiting block, the limiting block being movably arranged in the limiting rod and being used to block the movement of the adjusting block towards the valve block.

[0019] Further, the adjusting piece further comprises a first backup nut and a second backup nut, the limiting block is a nut screwed with the limiting rod, the first backup nut is screwed on the limiting rod and abuts against one side of the limiting block, and the second backup nut is screwed on the valve rod and abuts against one side of the adjusting block.

[0020] Further, the number of the second feeding ports, the feeding pieces and the control assemblies is two, and the second feeding ports and the control assemblies are symmetrically arranged on two sides of the connecting piece.

[0021] Compared with the background art, the utility model has the following advantages after the above technical scheme is adopted.

[0022] 1. The utility model discloses a one-way valve with adjustable pressure in the feeding device, which is only opened when the pressure of each feeding line is equivalent, preventing the mutual communication of raw materials between the feeding lines when the pressure of a certain feeding line is abnormal, causing the pollution or mixture of raw materials, inaccurate single component distribution ratio in the mixture, abnormal quality of insulating glue, and product scrap due to pouring into the product.

[0023] 2. The utility model can adjust the pressure of the opened one-way valve, i.e. the pressure in the raw material line, to establish back pressure, so that the one-way valve can only be opened when a certain amount of raw material enters the feeding line, avoiding the uncontrolled flow of raw materials due to gravity when the feeding port and the mixer are located at a low position relative to the raw material feeding device, providing effective raw material feeding pressure detection and control conditions, and enriching the use scenarios.

[0024] 3. The one-way valve adjusting mechanism in the utility model is external, which can easily adjust the pressure of the fluid opened one-way valve, i.e. the back pressure in the raw material line, by changing the pre-compression amount of the telescopic piece or replacing springs with different elastic coefficients without disassembling the valve group and the feeding line, reducing the workload, and avoiding the spilling of raw materials when disassembling the valve group and the feeding line, causing environmental pollution of the equipment and touching allergy of the operator.

[0025] 4. The one-way valve of the utility model has valve opening adjusting function and is external, allowing online adjustment in the production state without disassembling the valve group and the feeding line, and facilitating real-time observation of the adjustment results.

[0026] 5. The valve rod of the one-way valve in the utility model is exposed, the working position of the valve rod can be obtained by the naked eye or a high-speed camera, the opening of each raw material one-way valve can be seen, the actual working opening degree can be seen, the valve opening force can be quantified, the working condition of the entire valve group can be further analyzed, the external telescopic piece is not immersed in the material and is not corroded, and the pollution of the material or the change of the elastic coefficient is avoided.

[0027] 6, The utility model discloses a compact structure, and the cavity volume of connecting piece is relatively small, reduces the solidification accumulation of mixed material in a large range, reduces the maintenance cleaning workload. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the structure schematic diagram of the utility model;

[0029] Figure 2 It is the partial sectional view of the utility model;

[0030] Figure 3 It is the partial structure schematic diagram of the utility model.

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] Feed piece 100, pneumatic ball valve 110, first feed port 111;

[0033] Connecting piece 200, feed cavity 211;

[0034] Control assembly 300, valve block 310, valve cavity 311, one-way valve 320, valve rod 321, valve core 322, telescopic piece 323, valve seat 324, guide sleeve 325, adjusting piece 326, adjusting block 3261, limiting rod 3262, limiting block 3263, first spare tightening nut 3264, second spare tightening nut 3265. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantage of the utility model more clearly and clearly, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model. In addition, it should be explained that:

[0036] The terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements of the utility model must have a particular orientation, so it cannot be understood as a limitation on the utility model.

[0037] When an element is referred to as "fixed to" or "provided with" or "provided in" another element, it can be directly on another element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to another element or indirectly connected to the other element.

[0038] Unless otherwise defined, the terms "mounting", "connected", "connecting" are to be construed broadly in accordance with their ordinary meanings, for example, connecting can be fixed connecting, detachable connecting, or integrally connecting; can be mechanical connecting, or electrical connecting; can be direct connecting, or indirect connecting through an intermediate medium; can be internal connecting of two elements, or interactive relationship of two elements. The specific meanings of the above terms in the utility model can be understood by those skilled in the art according to the specific circumstances. Embodiment

[0039] Cooperation Figure 1 And Figure 2 As shown in the figure, the utility model discloses a kind of feeding device with adjustable check valve, including feeding piece 100, connecting piece 200 and control assembly 300.

[0040] Feeding piece 100 includes pneumatic ball valve 110, and first feeding port 111 is equipped on pneumatic ball valve, and raw material (such as A material and B material in the figure) is introduced by the opening of pneumatic ball valve 110. Figure 1

[0041] Connecting piece 200 includes feeding cavity 211, discharge port and at least two second feeding ports, discharge port is located at the side of feeding cavity 211, and second feeding port is located below feeding cavity 211, and discharge port and second feeding port are communicated with feeding cavity 211 respectively, discharge port and at least two second feeding ports constitute three-way or more than three-way fluid passage structure, and material after confluence flows out from discharge port.

[0042] Control assembly 300 includes valve block 310 and check valve 320, and each second feeding port is respectively connected with valve block 310, and valve block 310 is equipped with valve cavity 311 communicated with first feeding port 111 and second feeding port, and check valve 320 is equipped in valve cavity 311, check valve 320 is communicated with valve cavity 311 and feeding cavity 211 when the feeding pressure of valve cavity 311 is greater than the pressure of feeding cavity 211, and valve cavity 311 and feeding cavity 211 are cut off when the feeding pressure of valve cavity 311 is not greater than the pressure of feeding cavity 211.

[0043] According to the kind of required mixed material, the number of second feeding port can be set to two or more than two, and the number of feeding piece 100 and control assembly 300 is correspondingly set according to the number and position of second feeding port, to satisfy the mixing of two or more than two kinds of mixed materials. In the embodiment, the number of second feeding port, feeding piece 100 and control assembly 300 is preferably two, and second feeding port and control assembly 300 are symmetrically arranged on the two sides of connecting piece 200.

[0044] Cooperation Figures 1 to 3 ​As shown, the one-way valve 320 includes a valve rod 321, a valve core 322, and a telescopic member 323. The valve rod 321 is arranged in the valve cavity 311, and the end of the valve rod 321 is connected with the valve core 322. The valve core 322 is used to connect or cut off the valve cavity 311 and the feeding cavity 211. The telescopic member 323 is used to reset the valve core 322 from the connection position to the cut-off position. In the embodiment, the one-way valve 320 further includes a valve seat 324. The valve block 310 is provided with a first mounting hole communicated with the valve cavity 311 on the side close to the second feeding port. The valve seat 324 is fixed in the first mounting hole by a sealing ring. The valve core 322 is used to realize the connection or cut-off of the valve cavity 311 and the feeding cavity 211 by being close to or separated from the valve seat 324. In addition, the valve block 310 is provided with a second mounting hole communicated with the valve cavity 311 on the side close to the telescopic member 323. The second mounting hole is provided with a guide sleeve 325, and the valve rod 321 is arranged in the guide sleeve 325.

[0045] In the embodiment, one end of the valve rod 321 extends out of the valve cavity 311 and extends to the outside of the valve block 310. The valve rod 321 can be fixed to the outside of the valve block 310 by screwing, riveting, welding, or the like. Preferably, the valve rod 321 is fixed to the valve block 310 by screwing, so as to facilitate disassembly and maintenance. The valve rod 321 of the one-way valve is exposed, and the working position of the valve rod 321 can be obtained by naked eyes or a high-speed camera. It can be seen that whether the opening of each raw material one-way valve is synchronized and the actual working opening thereof. The valve opening force can be quantified, which can be used for further analysis of the working condition of the entire valve group.

[0046] The telescopic member 323 can adopt a structure with a drive (such as a drive cylinder) or a structure without a drive (such as a spring), and is not limited. As a preferred, in the embodiment, the telescopic member 323 adopts a spring, which is sleeved on the valve rod 321 and located outside the valve block 310. The restoring force of the compressed telescopic member 323 is used to reset the valve core 322 from the connection position to the cut-off position. At the same time, the external telescopic member 323 does not need to be immersed in the material and is not corroded, which can avoid pollution of the material or change of the elastic coefficient.

[0047] The one-way valve 320 further includes an adjusting member 326 arranged outside the valve block 310 and used to adjust the compression amount of the telescopic member 323. By arranging the adjusting mechanism of the one-way valve outside, the pressure of the fluid opening one-way valve can be easily adjusted by changing the pre-compression amount of the telescopic member 323 or replacing the spring with different elastic coefficients without disassembling the valve group and the feeding pipeline. That is, the back pressure in the raw material pipeline is adjusted, the workload is reduced, and the raw material is prevented from spilling out when the valve group and the feeding pipeline are disassembled, so as to avoid environmental pollution of the equipment and touch allergy of the operator.

[0048] The adjusting piece 326 comprises an adjusting block 3261 and a limiting rod 3262, the adjusting block 3261 is movably arranged outside the valve block 310, the telescopic piece 323 is located between the adjusting block 3261 and the valve block 310, and the compression amount of the telescopic piece 323 is adjusted by changing the position of the adjusting block 3261; the limiting rod 3262 is arranged outside the valve block 310 and is parallel to the valve rod 321, the adjusting block 3261 is movably arranged in the valve rod 321 and the limiting rod 3262 (two through holes are arranged in the adjusting block 3261 for the arrangement), and the maximum opening of the valve core 322 connecting the valve cavity 311 and the feeding cavity 211 is adjusted by changing the position of the adjusting block 3261 in the limiting rod 3262. The utility model has the valve opening adjusting function and is external, and the production state can be adjusted on line without disassembling the valve group and the feeding pipeline, and the adjusting result can be observed in real time.

[0049] The adjusting piece 326 further comprises a limiting block 3263, a first backup nut 3264 and a second backup nut 3265, the limiting block 3263 is movably arranged in the limiting rod 3262 and is used for blocking the movement of the adjusting block 3261 to the valve block 310, in the embodiment, the limiting block 3263 can be connected in the limiting rod 3262 by clamping, screwing, clamping and the like, and the limitation is not made. Preferably, the limiting block 3263 is connected with the limiting rod 3262 by screwing, that is, the limiting block 3263 is a nut screwed with the limiting rod 3262. Meanwhile, the first backup nut 3264 is screwed on the limiting rod 3262 and abuts against one side of the limiting block 3263, the first backup nut 3264 compresses the limiting block 3263 to play a role of fixing and preventing loosening, and the second backup nut 3265 is screwed on the valve rod 321 and abuts against one side of the adjusting block 3261. The second backup nut 3265 compresses the adjusting block 3261 to play a role of fixing and preventing loosening.

[0050] The working principle of the utility model is as follows (exemplarily described by taking the mixing of two kinds of mixed materials A material and B material) :

[0051] When feeding, taking A material feeding as an example, the pneumatic ball valve 110 is opened, A material enters the valve cavity 311 of the valve block 310 through the first feeding port 111 and flows to the right, the pressure of the fluid pushes the valve core 322 at the tail end of the valve rod 321 to drive the adjusting block 3261 connected with the valve rod 321 to compress the telescopic piece 323 (that is, a spring), and the one-way valve 320 is opened, so that A material enters the feeding cavity 211 of the connecting piece 200. At the same time, B material also enters the feeding cavity 211 synchronously, and A material and B material flow out from the feeding cavity 211 of the connecting piece 200 to the subsequent mixer for further mixing.

[0052] In the process of moving the adjusting block 3261 driven by the valve stem 321, the limiting block 3263 (i.e. the nut) blocks the maximum movement stroke of the adjusting block 3261 moving to the right, i.e. limits the maximum opening of the one-way valve 320. The maximum opening of the one-way valve 320 can be adjusted by adjusting the transverse position of the limiting block 3263 on the limiting rod 3262, changing the distance between the limiting block 3263 and the adjusting block 3261, and then adjusting the maximum opening of the one-way valve 320. Therefore, the pre-compression amount of the telescopic member 323 (i.e. the spring) can be changed by adjusting the transverse position of the adjusting block 3261 on the valve stem 321, and then the force of the A material or the B material pushing away the valve core 322 at the end of the valve stem 321 is changed, i.e. the pressure of the A material or the B material opening the one-way valve 320 is adjusted, i.e. the pressure in the raw material pipeline is adjusted, the back pressure is established, and the one-way valve 320 can be opened only when the A material or the B material entering the valve cavity 311 reaches a certain amount, so as to avoid the A material or the B material flowing out uncontrollably due to gravity.

[0053] When the feeding is stopped, taking the A material as an example, the pneumatic ball valve 110 is closed, the pressure in the valve cavity 311 in the valve block 310 decreases due to the stop of the continuous raw material supply, so that the adjusting block 3261 moves to the left under the action of the telescopic member 323 (i.e. the spring), and drives the valve stem 321 to move to the left until the valve core 322 at the end of the valve stem 321 is tightly attached to the valve seat 324 to close the one-way valve 320.

[0054] Prevent material backflow, when the material pressure control is unbalanced, for example, when the pressure in the B material supply pipeline is greater than the A material, the fluid pressure in the feeding cavity 211 will be greater than the pressure in the valve cavity 311, the valve stem 321 moves to the left under the action of the pressure difference on both sides, so that the valve core 322 at the end thereof is tightly attached to the valve seat 324 to close the one-way valve 320, preventing the high-pressure B material from invading the A material supply pipeline, causing A material pollution or inaccurate proportioning of single components in the mixed material.

[0055] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A feed device with an adjustable check valve, characterized in that, The utility model relates to a kind of material feeding device, including: feeding piece, which is provided with first feeding port for feeding mixed material;Connecting piece, which includes feeding cavity, discharge port and at least two second feeding ports, the discharge port and second feeding port are communicated with the feeding cavity respectively;Control assembly, which includes valve block and check valve, each second feeding port is connected with the valve block respectively, the valve block is provided with valve cavity communicated with the first feeding port and second feeding port, the check valve is arranged in the valve cavity, when the feeding pressure of the valve cavity is greater than the pressure of the feeding cavity, the check valve connects the valve cavity and feeding cavity, and when the feeding pressure of the valve cavity is not greater than the pressure of the feeding cavity, the check valve cuts off the valve cavity and feeding cavity. The check valve includes valve rod, valve core and telescopic part, the valve rod is arranged in the valve cavity, the end of the valve rod is connected with the valve core, the valve core is used to connect or cut off the valve cavity and feeding cavity, and the telescopic part is used to reset the valve core from connection position to cut-off position. One end of the valve rod extends out of the valve cavity and extends to the outside of the valve block. The telescopic part is a spring, which is sleeved in the valve rod and located outside the valve block, and the reset force of the compressed telescopic part is used to reset the valve core from connection position to cut-off position.

2. A feed device with an adjustable check valve as claimed in claim 1, characterized in that The check valve further includes adjusting part, which is arranged outside the valve block and used to adjust the compression amount of the telescopic part.

3. A feed device with an adjustable check valve as defined in claim 2, characterized in that The adjusting part includes adjusting block, which is movably arranged outside the valve block, and the telescopic part is located between the adjusting block and valve block, and the compression amount of the telescopic part is adjusted by changing the position of the adjusting block.

4. A feed device with an adjustable check valve as defined in claim 3, characterized in that The adjusting part further includes limiting rod, which is arranged outside the valve block and parallel to the valve rod, and the adjusting block is movably arranged in the valve rod and limiting rod, and the maximum opening of the valve core connecting the valve cavity and feeding cavity is adjusted by changing the position of the adjusting block in the limiting rod.

5. A feed device with an adjustable check valve as defined in claim 4, characterized in that The adjusting part further includes limiting block, which is movably arranged in the limiting rod and used to block the movement of the adjusting block towards the valve block.

6. A feed device with an adjustable check valve as defined in claim 5, characterized in that The adjusting part further includes first backup nut and second backup nut, the limiting block is a nut screwed with the limiting rod, the first backup nut is screwed on the limiting rod and abuts against one side of the limiting block, and the second backup nut is screwed on the valve rod and abuts against one side of the adjusting block.

7. A feed device with an adjustable check valve as defined in claim 6, characterized in that The number of second feeding ports, feeding pieces and control assemblies is two, and the second feeding ports and control assemblies are symmetrically arranged on both sides of the connecting piece.

8. A feed device with an adjustable check valve as defined in claim 7, characterized in that ​ 9. A feed device with an adjustable check valve as defined in claim 8, characterized in that ​ 10. A feed device with an adjustable check valve according to any one of claims 1-9, characterized in that, ​

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