A compounder

Abstract

The utility model provides a kind of mixer, belong to mixed device technical field.It includes: at least two gas inlet passageway, it is opened in mixing component, with corresponding mixing cavity is linked, for conveying gas to mixing cavity;Monitoring cavity is arranged in mixing component, and the quantity of monitoring cavity is not less than the quantity of gas inlet passageway, wherein mixing cavity and corresponding gas inlet passageway are communicated by monitoring cavity, monitoring cavity is provided with the closed part that can be relatively active, closed part is used to close the air intake between monitoring cavity and gas inlet passageway, and gas inlet passageway is communicated and is provided with opening passageway, and opening passageway corresponding with gas inlet passageway can only be communicated with the monitoring cavity corresponding with other gas inlet passageway and is arranged;Advantage is that each gas inlet passageway is provided with independent opening passageway, and this opening passageway is not used for opening of its own passageway, but only communicated with the monitoring cavity corresponding with other gas inlet passageway, and this cross control logic realizes interlock between each gas passageway.

Description

Technical Field

[0001] This utility model belongs to the field of mixing device technology, and in particular relates to a mixer. Background Technology

[0002] In industries such as pharmaceuticals, steel, and welding and cutting, it is often necessary to mix two or more gases in specific proportions using a gas mixer. Existing gas mixers mostly use independently controlled regulating valves to control the on / off state and flow rate of each gas path, followed by uniform mixing through a mixing chamber. However, such devices lack effective interlocking mechanisms between the gas paths. If a gas path experiences a gas source failure, valve leakage, or control system malfunction, the mixed gas composition can easily deviate significantly from the set proportions. This is especially true for mixing multiple gases; therefore, there is an urgent need for a safe mixing device that can prevent the flow of any remaining gases if one path is blocked. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a mixer that utilizes a mechanical structure to achieve cross-control.

[0004] The objective of this utility model can be achieved through the following technical solution: a mixer, comprising:

[0005] A mixing component, wherein the mixing component is provided with at least two mixing chambers;

[0006] At least two gas inlet channels are provided, which are opened in the mixing component and connected to the corresponding mixing chamber, for supplying gas to the mixing chamber;

[0007] A monitoring chamber is disposed within the mixing component, and the number of monitoring chambers is not less than the number of gas inlet channels. The mixing chambers and the corresponding gas inlet channels are connected through the monitoring chambers. The monitoring chambers are provided with relatively movable sealing parts, which are used to seal the air intake between the monitoring chambers and the gas inlet channels. The gas inlet channels are connected to opening channels, and the opening channels corresponding to the gas inlet channels can only be connected to the monitoring chambers corresponding to other gas inlet channels.

[0008] In the above-mentioned mixer, the opening channels are interconnected to form a circulation path. When the closed part of any of the monitoring chambers is not opened, the circulation path is interrupted, and all the gas inlet channels stop supplying gas to the corresponding mixing chamber.

[0009] In the above-mentioned mixer, the number of gas inlet channels is three, which are configured as a first inlet channel, a second inlet channel and a third inlet channel. The first inlet channel is used to introduce a first gas, the second inlet channel is used to introduce a second gas, and the third inlet channel is used to introduce a third gas.

[0010] In the aforementioned mixer, the monitoring chamber is connected to the corresponding gas inlet channel via a ventilation chamber. The sealing part is located at the end of the ventilation chamber away from the monitoring chamber and is movable relative to the ventilation chamber. When the sealing part abuts against the inner wall of the ventilation chamber, it seals the ventilation chamber. The monitoring chamber is divided into an open chamber and a connecting chamber by a partition made of flexible material. The connecting chamber is connected to the mixing chamber, and the open chamber is connected to the open channel. When the sealing part opens the ventilation chamber, the ventilation chamber and the connecting chamber are connected. The partition and the sealing part are connected by a transmission mechanism.

[0011] In one of the above-mentioned mixers, a transmission rod is fixedly installed on the closed part, and the other end of the transmission rod abuts against the partition part.

[0012] In the above-mentioned mixer, a guide portion with an open end is fixedly disposed in the venting cavity. A guide hole is provided on the guide portion along its axial direction. The transmission rod passes through the guide hole and can slide relative to the guide hole. A through vent hole is provided on the side wall of the guide portion.

[0013] In the above-mentioned mixer, an abutment part is fixedly provided on the partition part, and an abutment groove is provided on the abutment part, and the end of the transmission rod can be inserted into the abutment groove.

[0014] In one of the above-mentioned mixers, the side of the sealing part facing the ventilation cavity is an arc-shaped surface.

[0015] In one of the above-mentioned mixers, the abutment groove is a conical groove, and the end of the transmission rod is a conical part.

[0016] In one of the above-mentioned mixers, a sealing ring is fixedly provided at the end of the venting cavity. When the sealing part closes the venting cavity, the sealing part abuts against the sealing ring.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] (1) Each gas inlet channel has an independent opening channel. This opening channel is not used to open its own passage, but is only connected to the monitoring chamber corresponding to other gas inlet channels. This means that the entry of a certain gas must rely on another gas to apply pressure or displacement through its opening channel, which will push the closed part in the corresponding monitoring chamber to open the passage. This "one-to-one" cross-control logic realizes the interdependence and sequential start-up between the gas passages;

[0019] (2) The opening channels are interconnected to form a circulation path. When the closed part of any monitoring chamber is not opened, the circulation path is interrupted and all gas inlet channels stop supplying gas to the corresponding mixing chamber. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 yes Figure 1 One of the schematic diagrams of the cross-sectional structure;

[0022] Figure 3 yes Figure 1 Schematic diagram of the internal structure of the first chamber;

[0023] Figure 4 yes Figure 1 The second schematic diagram of the cross-sectional structure;

[0024] Figure 5 yes Figure 1 The third schematic diagram of the cross-sectional structure;

[0025] Figure 6 This is a three-dimensional structural diagram of the guide section;

[0026] Figure 7 yes Figure 1 The fourth schematic diagram of the cross-sectional structure;

[0027] Figure 8 yes Figure 1 Fifth cross-sectional structural schematic diagram;

[0028] Figure 9 yes Figure 1 The sixth schematic diagram of the cross-sectional structure;

[0029] Figure 10 yes Figure 1 The seventh schematic diagram of the cross-sectional structure.

[0030] In the diagram, 100 is a mixing component; 101 is a mixing chamber; 102 is the first chamber; 103 is the second chamber; 104 is the third chamber; 105 is the fourth chamber; 106 is a partition; 107 is an opening chamber; 108 is a connecting chamber; 200 is the first air intake channel; 201 is the second air intake channel; 202 is the third air intake channel; 203 is a transition channel; 300 is the first side channel; 301 is the first opening channel; 302 is the second side channel; 303 is the second opening channel; 304 is the third opening channel; 305 is the fourth opening channel; 400 is a venting chamber; 401 is a sealing part; 402 is a transmission rod; 403 is a guide part; 404 is a guide hole; 405 is a vent hole; 406 is a contact part; 407 is a contact groove; 408 is a sealing ring; 500 is a cover; 501 is a venting channel. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] like Figures 1-10 As shown, a mixer includes:

[0034] Mixing component 100, which has at least two mixing chambers 101;

[0035] At least two gas inlet channels are provided in the mixing component 100 and connected to the corresponding mixing chamber 101 for supplying gas to the mixing chamber 101.

[0036] The monitoring chamber is located within the mixing component 100, and the number of monitoring chambers is not less than the number of gas inlet channels. The mixing chamber 101 is connected to the corresponding gas inlet channel through the monitoring chamber. The monitoring chamber is provided with a relatively movable sealing part 401, which is used to seal the air intake between the monitoring chamber and the gas inlet channel. The gas inlet channel is connected to an opening channel, and the opening channel corresponding to the gas inlet channel can only be connected to the monitoring chamber corresponding to other gas inlet channels.

[0037] In this embodiment, a monitoring chamber is provided in the communication path between each gas inlet channel and the mixing chamber 101, and a movable sealing part 401 is configured in the monitoring chamber to block the passage of gas from the inlet channel through the monitoring chamber into the mixing chamber 101. Under normal conditions, the sealing part 401 remains closed under the action of gas pressure difference, ensuring that gas cannot enter the mixing chamber 101 without authorization. Each gas inlet channel has an independent opening channel, which is not used to open its own passage, but only to communicate with the monitoring chamber corresponding to other gas inlet channels. This means that the entry of a certain gas must rely on another gas to apply pressure or displacement through its opening channel, pushing the sealing part 401 in the corresponding monitoring chamber to actuate, thereby opening the passage. This cross-control logic realizes the interlocking between the gas passages.

[0038] Only when all the gases involved in the mixing are in a condition to be supplied and are introduced at the same time can the gases trigger each other through the opening channels between them, release the seal one by one, and finally achieve coordinated entry into the mixing chamber 101.

[0039] If any one of the gas channels fails to supply gas or the gas supply is interrupted, it cannot output control pressure to trigger the monitoring chambers of other gases through the opening channel. As a result, the sealing section 401 of other gases remains closed, and the gas inlet passage cannot be opened, thus preventing the remaining gases from entering the mixing chamber 101. This mechanism fundamentally avoids problems such as incomplete mixing, compositional deviations, or even safety hazards (such as the accumulation of combustible gases) caused by individual gases entering the mixing chamber 101 in the event of gas shortage, gas interruption, or misoperation.

[0040] Furthermore, the open channels are interconnected to form a circulation path. When the closed part 401 of any monitoring chamber is not opened, the circulation path is interrupted, and all gas inlet channels stop supplying gas to the corresponding mixing chamber 101.

[0041] Furthermore, this application constructs a continuous loop control path that runs through all relevant pathways by interconnecting the opening channels of each gas inlet channel, achieving full-link closed-loop interlocking of the multi-gas input system. Specifically, the opening channels are structurally connected sequentially to form a continuous loop path, which maintains its connectivity by relying on the response state of the sealing part 401 in each monitoring chamber. Only when a gas is introduced and pushes its target (i.e., the sealing part 401 corresponding to another gas) to complete the opening action can the control pressure continue to be transmitted in the loop path, thereby triggering the opening process of subsequent gases.

[0042] Therefore, if the closed part 401 in any monitoring chamber is not successfully opened (i.e. the corresponding passage does not respond normally), the circulation passage will be physically interrupted at this point, the upstream control pressure cannot continue to be transmitted, and the downstream gas inlet passages will remain closed due to the lack of an opening signal, ultimately resulting in all gases being unable to be delivered to their corresponding mixing chamber 101.

[0043] like Figures 5-10 As shown, in one specific embodiment, there are three gas intake channels, which are configured as a first intake channel 200, a second intake channel 201 and a third intake channel 202. The first intake channel 200 is used to introduce a first gas, the second intake channel 201 is used to introduce a second gas, and the third intake channel 202 is used to introduce a third gas.

[0044] Furthermore, there are five mixing chambers 101. The first air intake channel 200 is connected to each mixing chamber 101, two of the mixing chambers 101 are connected to the second air intake channel 201, and the remaining three mixing chambers 101 are connected to the third air intake channel 202. The mixing of the first gas and the second gas, and the mixing of the first gas and the third gas are realized in the mixing chambers 101. The mixed gas will flow out after being mixed again through the remixing channel. The mixing chamber 100 is provided with four monitoring chambers, which are configured as the first chamber 102, the second chamber 103, the third chamber 104, and the fourth chamber 105. The opening channels are configured as the first opening channel 301, the second opening channel 303, and the third opening channel. 304 and the fourth opening channel 305 are connected. The first chamber 102 is located between the third air intake channel 202 and two of the mixing chambers 101. The second chamber 103 is located between the third air intake channel 202 and another mixing chamber 101. The third chamber 104 is located between the first air intake channel 200 and the transition channel 203, which connects all the mixing chambers 101. The fourth chamber 105 is located between the second air intake channel 201 and the remaining two mixing chambers 101. Taking the second air intake channel 201 as the initial opening channel as an example, after air enters the second air intake channel 201, it is blocked by the monitoring chamber. The second air intake channel 201 is connected to a first side channel 300. The first side passage 300 is connected to the first opening passage 301 and enters the second chamber 103 to open the passage within the second chamber 103. The third intake passage 202 then enters the second chamber 103 and flows into one of the mixing chambers 101. The third intake passage 202 is connected to the first chamber 102 via the second side passage 302, but is blocked by the sealing part 401. The second opening passage 303 on the second side passage 302 is connected to the third chamber 104. Opening the third chamber 104 allows the first intake passage 200 to connect to the third chamber 104 and enter the mixing chamber 101. A transition channel 203 is provided at chamber 104 to connect the third chamber 104 with the mixing chamber 101. A third opening channel 304 is provided on the transition channel 203, which is connected to the first chamber 102. Opening the first chamber 102 connects the first chamber 102 with the third air intake channel 202, allowing the third air intake channel 202 to enter the other two mixing chambers 101 through the first chamber 102. At the same time, a fourth opening channel 305 is provided on the second side channel 302, which is connected to the fourth chamber 105. Opening the fourth chamber 105 connects the second air intake channel 201 with two of the mixing chambers 101.

[0045] Specifically, the monitoring chamber is connected to the corresponding gas inlet channel via a ventilation chamber 400, and a sealing part 401 is located at the end of the ventilation chamber 400 away from the monitoring chamber. The sealing part 401 can move relative to the ventilation chamber 400. When the sealing part 401 abuts against the inner wall of the ventilation chamber 400, the sealing part 401 seals the ventilation chamber 400. The monitoring chamber is provided with a partition 106 made of flexible material (such as a rubber diaphragm, elastic film, etc.), which divides the monitoring chamber into an opening chamber 107 and a connecting chamber 108. The opening chamber 107 is connected to the opening channel of the corresponding other gas inlet channel. When external control gas enters the opening chamber 107, it pushes the partition 106 to deform or displace, and then moves the sealing part 401, which is connected to it, to overcome the pre-tightening force, thereby opening the ventilation chamber 400, allowing the gas in this path to enter the connecting chamber 108, and then into the mixing chamber 101, realizing the cross-control logic.

[0046] This application achieves efficient conversion of pneumatic control signals into mechanical actions by fixing a transmission rod 402 to the closed section 401 and having its end abut against the flexible partition 106 inside the monitoring chamber. Specifically, this structure utilizes the elastic deformation of the partition 106 under air pressure to directly push the transmission rod 402 in contact with its surface, thereby moving the closed section 401 and opening the ventilation chamber 400, thus opening the gas passage.

[0047] The mixed component 100 is provided with an elastic element 409 (such as a compression spring, torsion spring, or elastic rubber body). The end of the elastic element 409 is connected to the closing part 401, providing a continuous restoring force to the closing part 401, so that the closing part 401 is always in a closed state when there is no control pressure, preventing gas from entering the communicating cavity 108. Moreover, the elastic element 401 not only provides a restoring force, but also plays a buffering role during the opening process, avoiding rigid impact between the closing part 401 and the cavity, reducing mechanical impact and noise.

[0048] Further defining the design, a guide portion 403 with an open end is fixedly installed within the venting cavity 400. Along its axial direction, the guide portion 403 has a guide hole 404. The transmission rod 402 passes through the guide hole 404 and can slide relative to it. The guide portion 403 and its internal guide hole 404 provide precise axial guidance for the reciprocating sliding of the transmission rod 402, effectively limiting deflection, wobbling, or jamming during operation. This ensures that the sealing portion 401 can move smoothly along a predetermined path. A through vent hole 405 is provided on the side wall of the guide portion 403. When the sealing portion 401 is moved away from the sealed position by the transmission rod 402, gas can enter the interior of the guide portion 403 through the vent hole 405 and then flow to the mixing cavity 101 through its axial opening. This design ensures sufficient gas flow cross-section without affecting the guiding function, avoiding throttling or pressure loss due to structural obstruction, and improving gas delivery efficiency and mixing response speed.

[0049] Specifically, the mixing component 100 is provided with a cover 500, and a fixed partition 106 is clamped between the cover 500 and the mixing component 100. An opening cavity 107 is formed between the cover 500 and the partition 106, and the connecting cavity 108 is connected to the mixing cavity 101 through a ventilation channel 501.

[0050] Furthermore, an abutment portion 406 is fixedly provided on the partition 106, and an abutment groove 407 is provided on the abutment portion 406, allowing the end of the transmission rod 402 to be inserted into the abutment groove 407. The abutment groove 407 provides a clear insertion position and limiting space for the end of the transmission rod 402, ensuring that the transmission rod 402 always acts at the preset point of action when the partition 106 undergoes elastic deformation. After the end of the transmission rod 402 is inserted into the abutment groove 407, it is constrained by the groove wall during axial movement, effectively limiting its lateral displacement and rotational degree of freedom, preventing "disengagement" or "slippage" in high-frequency operation or vibration environments, ensuring that every control signal can be accurately converted into the mechanical displacement of the closed part 401, and enhancing the stability of the system operation.

[0051] Specifically, the abutment groove 407 is a conical groove, and the end of the transmission rod 402 is a conical part. During the insertion of the conical part into the conical groove, the axial deviation is automatically corrected by the guiding effect of the inclined surface, realizing the "self-centering" function. Even if there is a slight offset or slight tilting of the guide rod during the assembly process, the position can be quickly corrected in the initial contact stage, ensuring that the transmission rod 402 is always subjected to force and movement along the predetermined axis, significantly improving the repeatability and consistency of the opening and closing action.

[0052] The conical structure generates a radial component force under axial pressure, creating a self-locking tendency between the conical part and the conical groove that becomes tighter with pressure. This effectively suppresses the risk of lateral movement or disengagement of the transmission rod 402 under vibration or pressure fluctuation conditions, improving the stability and safety of the connection.

[0053] Specifically, the side of the sealing part 401 facing the vent cavity 400 is arc-shaped. In the closed state, when the arc-shaped surface contacts the inner wall (or sealing seat) of the vent cavity 400, a line seal or narrow band seal can be achieved through curvature matching. Compared to a planar seal, this makes it easier to form a uniform contact stress distribution under preload, avoiding localized leakage caused by assembly misalignment or small foreign objects. Simultaneously, the arc-shaped structure has a certain tolerance for minor deviations, reducing jamming or wear caused by eccentric forces.

[0054] A sealing ring 408 is fixedly provided at the end of the ventilation cavity 400. When the sealing part 401 closes the ventilation cavity 400, the sealing part 401 abuts against the sealing ring 408. When the sealing part 401 is reset under the action of the transmission rod 402, its arc-shaped surface abuts against the sealing ring 408, forming an effective sealing fit. By setting an independent sealing ring 408, direct hard contact between the sealing part 401 and the metal inner wall of the ventilation cavity 400 is avoided, preventing scratches, indentations, or metal fragments on the cavity surface caused by frequent impacts or friction. This is especially suitable for high-purity gases or mixing scenarios with strict cleanliness requirements.

[0055] As an independent component, the sealing ring 408 can be manufactured using specialized sealing materials with good elasticity, wear resistance, and corrosion resistance (such as fluororubber, silicone, PTFE, or metal sealing rings) to ensure good resilience and sealing performance during repeated opening and closing. Compared to placing the sealing surface directly on the metal cavity, this design significantly improves the durability and airtightness of the seal, effectively preventing gas leakage.

[0056] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0058] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A mixer, characterized in that, include: A mixing component, wherein the mixing component is provided with at least two mixing chambers; At least two gas inlet channels are provided, which are opened in the mixing component and connected to the corresponding mixing chamber, for supplying gas to the mixing chamber; A monitoring chamber is disposed within the mixing component, and the number of monitoring chambers is not less than the number of gas inlet channels. The mixing chambers and the corresponding gas inlet channels are connected through the monitoring chambers. The monitoring chambers are provided with relatively movable sealing parts, which are used to seal the air intake between the monitoring chambers and the gas inlet channels. The gas inlet channels are connected to opening channels, and the opening channels corresponding to the gas inlet channels can only be connected to the monitoring chambers corresponding to other gas inlet channels.

2. The mixer according to claim 1, characterized in that, The opening channels are interconnected to form a circulation path. When the closed part of any of the monitoring chambers is not opened, the circulation path is interrupted, and all the gas inlet channels stop supplying gas to the corresponding mixing chamber.

3. A mixer according to claim 2, characterized in that, The number of gas intake channels is three, which are configured as a first intake channel, a second intake channel and a third intake channel. The first intake channel is used to introduce a first gas, the second intake channel is used to introduce a second gas, and the third intake channel is used to introduce a third gas.

4. A mixer according to claim 1, characterized in that, The monitoring chamber is connected to the corresponding gas inlet channel via a ventilation chamber, and the sealing part is located at the end of the ventilation chamber away from the monitoring chamber. The sealing part is movable relative to the ventilation chamber. When the sealing part abuts against the inner wall of the ventilation chamber, the sealing part seals the ventilation chamber. The monitoring chamber is provided with a partition made of flexible material to divide the monitoring chamber into an open chamber and a connecting chamber. The connecting chamber is connected to the mixing chamber, and the open chamber is connected to the open channel. When the sealing part opens the ventilation chamber, the ventilation chamber and the connecting chamber are connected. The partition part and the sealing part are connected by a transmission.

5. A mixer according to claim 4, characterized in that, A transmission rod is fixedly installed on the sealing part, and the end of the transmission rod abuts against the partition part; an elastic element is installed inside the mixing part, and the end of the elastic element is connected to the sealing part to provide a restoring force to push the sealing part, thereby achieving the sealing of the ventilation chamber.

6. A mixer according to claim 5, characterized in that, A guide portion with an opening at one end is fixedly installed inside the ventilation cavity. A guide hole is provided on the guide portion along its axial direction. The transmission rod passes through the guide hole and can slide relative to the guide hole. A through ventilation hole is provided on the side wall of the guide portion.

7. A mixer according to claim 5, characterized in that, An abutment portion is fixedly provided on the partition, and an abutment groove is provided on the abutment portion, the end of the transmission rod being able to be inserted into the abutment groove.

8. A mixer according to claim 4, characterized in that, The side of the sealing part facing the ventilation cavity is arc-shaped.

9. A mixer according to claim 7, characterized in that, The abutment groove is a conical groove, and the end of the transmission rod is a conical part.

10. A mixer according to claim 4, characterized in that, A sealing ring is fixedly provided at the end of the ventilation cavity. When the sealing part closes the ventilation cavity, the sealing part abuts against the sealing ring.

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