Negative pressure integrated cover, negative pressure tank and particle analyzer

Abstract

The embodiment of the utility model provides a negative pressure integrated cover, a negative pressure tank and a particle analyzer, and relates to the technical field of particle optical analysis. The negative pressure integrated cover is suitable for the negative pressure tank, the negative pressure integrated cover comprises a cover body and a first control valve, the cover body is provided with a first flow path channel, the cover body is used for being installed on a tank body of the negative pressure tank, the first flow path channel is used for being communicated with the tank body, the first control valve is arranged on the first flow path channel, and the negative pressure tank can be suitable for the particle analyzer. The control valve is integrated on the cover body, so that the complexity of an external pipeline is simplified, the mounting space occupied by the liquid path system of the particle analyzer can be reduced, and meanwhile, the liquid path system of the particle analyzer is convenient to mount, overhaul and maintain.

Description

Technical Field

[0001] This utility model relates to the field of particle optical analysis technology, specifically to a negative pressure integrated cover, a negative pressure tank, and a particle analyzer. Background Technology

[0002] Particle analyzers are used to detect and analyze various tiny particles in liquid samples. In the medical field, particle analyzers are also called flow cytometers or flow cell analyzers, and are commonly used for particle analysis in blood, body fluids, and immune systems.

[0003] The existing liquid circuit system of particle analyzers mostly involves installing each control valve on a bracket, and then connecting the inlet and outlet of each control valve through external pipelines to form a liquid circuit control system.

[0004] However, this method of installing each control valve separately and connecting them through external pipelines is not only cumbersome to install, with complex and intricate external pipelines that are difficult to inspect and maintain, but also requires a large amount of installation space for the entire hydraulic control system. Utility Model Content

[0005] This invention provides a negative pressure integrated cover, a negative pressure tank, and a particle analyzer, which can reduce the installation space required for the liquid circuit system of the particle analyzer, and facilitate its installation, inspection, and maintenance.

[0006] The embodiments of this utility model can be implemented as follows:

[0007] In a first aspect, embodiments of this utility model provide a negative pressure integrated cover, suitable for negative pressure tanks, the negative pressure integrated cover comprising:

[0008] A cover, the cover having a first flow path channel, the cover being used to install on the tank body of the negative pressure tank, the first flow path channel being used to connect to the tank body; and

[0009] The first control valve is disposed in the first flow path channel.

[0010] In an optional embodiment, the cover is further provided with a second flow path channel. The cover has an outer wall and an inner wall. The inner wall is oriented toward the inside of the tank. One end of the first flow path channel is located on the inner wall. The inlet and outlet of the second flow path channel are both located on the outer wall.

[0011] The negative pressure integrated cover also includes a second control valve, which is disposed in the second flow path channel.

[0012] In an optional embodiment, there are multiple second flow paths and multiple second control valves, with each of the multiple second flow paths corresponding to one of the multiple second control valves.

[0013] In an optional embodiment, the inlet and outlet of the second flow path are located on the same side of the outer wall.

[0014] In an optional embodiment, the cover is further provided with a third flow path channel, one end of which is used to connect to the tank body. The negative pressure integrated cover also includes a pressure sensor, which is connected to the other end of the third flow path channel.

[0015] In an optional embodiment, the cover is further provided with a fourth flow path channel and a pressure relief port. One end of the fourth flow path channel is connected to the pressure relief port, and the other end of the fourth flow path channel is used to connect to the tank body. The negative pressure integrated cover also includes a third control valve, which is disposed in the fourth flow path channel.

[0016] In an optional embodiment, the negative pressure integrated cover further includes an air filter connected to the pressure relief port.

[0017] In an optional embodiment, the negative pressure integrated cover further includes an air intake damping device, which is disposed on the cover body and is connected to the tank body.

[0018] Secondly, in an embodiment of the present invention, a negative pressure tank is provided, including a tank body and a negative pressure integrated cover as described in any of the foregoing embodiments. The negative pressure integrated cover is installed on the tank body. The tank body has a negative pressure hole and a negative pressure chamber. One end opening of the first flow path channel and the negative pressure hole are both connected to the negative pressure chamber. The negative pressure hole is used to connect to a vacuum pump.

[0019] Thirdly, in the embodiments of this utility model, a particle analyzer is provided, including the negative pressure tank described in the foregoing embodiments.

[0020] The beneficial effects of the negative pressure integrated cover, negative pressure tank, and particle analyzer of this utility model include, for example:

[0021] This utility model provides a negative pressure integrated cover suitable for negative pressure tanks. The negative pressure integrated cover includes a cover body and a first control valve. The cover body is provided with a first flow path channel. The cover body is used to install on the tank body of the negative pressure tank. The first flow path channel is used to connect the tank body. The first control valve is set in the first flow path channel. The negative pressure tank can be used for particle analyzers. By integrating the control valve into the cover body, the complexity of external pipelines is simplified, thereby reducing the installation space required for the liquid circuit system of the particle analyzer. At the same time, it facilitates the installation, inspection and maintenance of the liquid circuit system of the particle analyzer.

[0022] An embodiment of this utility model provides a negative pressure tank, which includes a tank body and the aforementioned negative pressure integrated cover. The negative pressure integrated cover is installed on the tank body. The tank body has a negative pressure hole and a negative pressure chamber. One end opening of the first flow path channel and the negative pressure hole are both connected to the negative pressure chamber. The negative pressure hole is used to connect to a vacuum pump. The negative pressure tank has all the functions of the aforementioned negative pressure integrated cover.

[0023] An embodiment of this utility model provides a particle analyzer, which includes the aforementioned negative pressure tank and has all the functions of the aforementioned negative pressure tank. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the negative pressure tank provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram illustrating the principle of an embodiment of the present invention.

[0027] Icons: 100 - Cover; 101 - First flow path channel; 102 - Second flow path channel; 103 - Third flow path channel; 104 - Fourth flow path channel; 105 - Pressure relief port; 200 - Tank body; 201 - Negative pressure hole; 202 - Negative pressure chamber; 310 - First control valve; 320 - Second control valve; 330 - Third control valve; 400 - Pressure sensor; 500 - Air filter; 600 - Mounting connector; 10 - Connection connector. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0033] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0034] As mentioned in the background section, particle analyzers are used to detect and analyze various tiny particles in liquid samples. In the medical field, particle analyzers are also known as flow cytometers or flow cell analyzers, and are commonly used for particle analysis in blood, body fluids, and immune systems.

[0035] Existing particle analyzers typically employ a liquid circuit system where each control valve is mounted separately on a bracket, and then connected to the inlet and outlet of each valve via external piping to form a liquid circuit control system. However, this method of separately installing each control valve and connecting them via external piping is not only cumbersome to install, with complex and intricate external piping that is difficult to inspect and maintain, but also requires a large amount of installation space for the entire liquid circuit control system.

[0036] In view of this, please refer to Figure 1 and Figure 2 The negative pressure integrated cover, negative pressure tank and particle analyzer provided in the embodiments of this utility model can solve this problem, and will be described in detail below.

[0037] An embodiment of this utility model provides a particle analyzer with a liquid circuit system, which includes a negative pressure tank suitable for the particle analyzer. The negative pressure tank can simplify the structure of the entire liquid circuit system, reduce its space occupation, and make installation and maintenance more convenient.

[0038] Specifically, please refer to Figure 1 The negative pressure tank includes a tank body 200 and a negative pressure integrated cover. The negative pressure integrated cover is installed on the tank body 200. The tank body 200 has a negative pressure hole 201 and a negative pressure chamber 202. One end opening of the first flow path channel 101 and the negative pressure hole 201 are both connected to the negative pressure chamber 202. The negative pressure hole 201 is located on the lower side of the tank body 200 (e.g., Figure 2 As shown in the figure, the negative pressure hole 201 is used to connect the vacuum pump.

[0039] The vacuum pump can be a diaphragm pump, peristaltic pump, gear pump, rotary vane pump or piston pump. Preferably, a low-cost diaphragm pump can be selected.

[0040] The negative pressure integrated cover is suitable for negative pressure tanks. The cover includes a cover body 100 and a first control valve 310. The cover body 100 has a first flow path channel 101. The cover body 100 is installed on the tank body 200 of the negative pressure tank. The first flow path channel 101 connects to the tank body 200. The first control valve 310 is located in the first flow path channel 101. The first control valve 310 can be a solenoid valve. Figure 2 The two-position normally closed solenoid valve SV1 in the middle, and the first control valve 310 can control the opening and closing of the first flow path channel 101.

[0041] The negative pressure integrated cover also includes multiple connecting joints 10, which can facilitate the connection of pipelines in the liquid circuit system. The connecting joints 10 are set on the cover body 100. One of the connecting joints 10 is connected to one end of the first flow path channel 101, and the other end of the first flow path channel 101 is connected to the tank body 200. When the two-position two-normally closed solenoid valve SV1 is not working, the first flow path channel 101 between the connecting joint 10 and the negative pressure chamber 202 of the negative pressure tank is disconnected. When the two-position two-normally closed solenoid valve SV1 is working, the first flow path channel 101 between the connecting joint 10 and the negative pressure chamber 202 of the negative pressure tank is connected. The connecting joint 10 connected to the first flow path channel 101 usually serves as the pressure output end of the negative pressure tank, and also as the liquid input end of the negative pressure tank.

[0042] By integrating the control valve into the cover 100, the complexity of external piping is simplified, meaning the liquid circuit system structure is simpler. This reduces the installation space required for the particle analyzer's liquid circuit system and facilitates its installation, inspection, and maintenance.

[0043] The first flow path channel 101 can be connected to the flow chamber of the liquid system. A connecting connector 10 is connected to the negative pressure hole 201 of the tank body 200 of the negative pressure tank. The connecting connector 10 connected to the negative pressure hole 201 is connected to a vacuum pump. By operating the vacuum pump, the sample loading process can be facilitated, that is, the sample is sent into the flow chamber.

[0044] Specifically, the negative pressure port 201 is connected to the connector and the pipeline in sequence, and is connected to the vacuum pump through the pipeline. The internal volume of the tank 200 (which can be understood as the volume of the negative pressure chamber 202) is many times the stroke volume of the vacuum pump, for example, 10 to 1000 times.

[0045] Of course, in this embodiment, the number of first flow path channels 101 and the number of first control valves 310 can be two, with two first flow path channels 101 and two first control valves 310 corresponding one-to-one. Please refer to [reference needed]. Figure 2 The two first control valves 310 can be understood as solenoid valve SV1 and solenoid valve SV6, respectively.

[0046] Here, the solenoid valve SV6 and the first flow path channel 101 corresponding to the solenoid valve SV6 can be used as a backup control structure for the solenoid valve SV1 and the other first flow path channel 101 corresponding to the solenoid valve SV1. For example, the first flow path channel 101 corresponding to the solenoid valve SV6 can also be connected to the flow chamber of the liquid circuit system.

[0047] In addition, to facilitate the integration of control valves for some pipelines in the liquid circuit system into the negative pressure tank, in this embodiment, the cover 100 is also provided with a second flow path channel 102. The cover 100 has an outer wall and an inner wall. The inner wall faces the inside of the tank 200. One end of the first flow path channel 101 is located on the inner wall. The inlet and outlet of the second flow path channel 102 are both located on the outer wall. The negative pressure integrated cover also includes a second control valve 320. The second control valve 320 is disposed in the second flow path channel 102. The second control valve 320 can be a solenoid valve. The second control valve 320 is used to control the opening and closing of the second flow path channel 102.

[0048] By placing the second control valve 320 in the second flow path channel 102, which is located in the cover 100, it is equivalent to integrating the control valves of some pipelines in the liquid circuit system into the negative pressure tank, reducing the installation space required for the particle analyzer liquid circuit system. At the same time, it facilitates the installation, inspection, and maintenance of the particle analyzer liquid circuit system.

[0049] The inlet and outlet of the second flow path channel 102 are both connected to a connecting joint 10.

[0050] In this embodiment, there are multiple second flow path channels 102 and multiple second control valves 320, with each multiple second flow path channel 102 corresponding to a single second control valve 320. "Multiple" here can be understood as at least two. In this embodiment, there are three second flow path channels 102 and three second control valves 320. The three second control valves 320 can be understood as... Figure 2 The two-position two-normally closed solenoid valves SV2, SV4, and SV5 are included.

[0051] Of course, in other embodiments, the number of second flow path channels 102 and the number of second control valves 320 may both be two, or in some embodiments, the number of second flow path channels 102 and the number of second control valves 320 may both be one.

[0052] Furthermore, in this embodiment, the inlet of the second flow path channel 102 and the outlet of the second flow path channel 102 are located on the same side of the outer wall, such as... Figure 2 As shown, the inlet of the second flow path channel 102 and the outlet of the second flow path channel 102 are located on the upper side of the outer wall of the cover 100.

[0053] It should be noted that when the two-position two-normally closed SV2 is not working, the second flow path 102 between the connecting joint 10 connected to the inlet of the second flow path 102 and the connecting joint 10 connected to the outlet of the second flow path 102 is disconnected. When the two-position two-normally closed SV2 is working, the second flow path 102 between the connecting joint 10 connected to the inlet of the second flow path 102 and the connecting joint 10 connected to the outlet of the second flow path 102 is connected.

[0054] In addition, in order to facilitate monitoring of the pressure inside the negative pressure tank, the cover 100 is also provided with a third flow path channel 103. One end of the third flow path channel 103 is used to connect to the tank body 200, and the other end of the third flow path channel 103 is connected to a connecting connector 10. The negative pressure integrated cover also includes a pressure sensor 400, and the pressure sensor 400 and the other end of the third flow path channel 103 can be connected through the connecting connector 10.

[0055] Of course, in some embodiments, the pressure sensor 400 may also be located in the negative pressure chamber 202 to reduce the number of connecting joints 10 communicating with the third flow path channel 103 and the pipelines connected to the connecting joints 10 communicating with the third flow path channel 103.

[0056] To facilitate rapid pressure relief of the negative pressure tank, the cover 100 is also provided with a fourth flow path channel 104 and a pressure relief port 105. One end of the fourth flow path channel 104 is connected to the pressure relief port 105, and the pressure relief port 105 is connected to a connecting joint 10. The other end of the fourth flow path channel 104 is used to connect to the tank body 200. The negative pressure integrated cover also includes a third control valve 330, which is located in the fourth flow path channel 104.

[0057] It should be noted that the third control valve 330 can be a solenoid valve. Figure 2 In this context, the third control valve 330 can be understood as a two-position, two-normally closed solenoid valve SV3.

[0058] When the two-position two-normally closed SV3 is not working, the fourth flow path channel 104 between the connecting joint 10 connected to the pressure relief port 105 and the negative pressure chamber 202 of the negative pressure tank is disconnected; when the two-position two-normally closed SV3 is working, the fourth flow path channel 104 between the connecting joint 10 connected to the pressure relief port 105 and the negative pressure chamber 202 of the negative pressure tank is connected.

[0059] In this embodiment, the negative pressure integrated cover also includes an air filter 500, which can be understood as an intake filter. The air filter 500 and the pressure relief port 105 are connected by a connecting joint 10. Specifically, the connecting joint 10 connected to the pressure relief port 105 is connected to the air filter 500 through a pipeline. When the two-position two-normally closed SV3 is working, air enters the negative pressure chamber 202 in the negative pressure tank through the air filter 500, the connecting joint 10 connected to the pressure relief port 105 and the fourth flow path channel 104, so as to achieve the purpose of rapid pressure relief.

[0060] The negative pressure integrated cover also includes an air intake damping device, which is installed on the cover body 100 and connected to the negative pressure chamber 202 of the tank body 200. The air intake damping device facilitates precise control of the pressure inside the negative pressure tank and effectively reduces pressure fluctuations. Specifically, the air intake damping device can be selected from air intake damping pipes, throttle valves, speed control valves, or filters, etc.

[0061] The negative pressure integrated cover also includes an installation connector 600, which is located on the cover body 100. The air intake damping device, taking the air intake damping pipe as an example, can be connected to the installation connector 600. Specifically, the air intake damping pipe and the installation connector 600 can be connected through a pipeline, and the installation connector 600 and the tank body 200 are connected through a channel located on the cover body 100.

[0062] When the pressure inside the negative pressure tank fluctuates, the intake volume of the intake damping device will also change accordingly, thereby effectively reducing the pressure fluctuation inside the negative pressure tank (which can be understood as the negative pressure chamber 202). As a bypass to the negative pressure output end (i.e., the connecting joint 10 connected to the first flow path channel 101), the intake damping device can make the pressure fluctuation at the negative pressure output end more stable.

[0063] Of course, in other embodiments, devices that can achieve intake damping function in the prior art can also be used, which will not be described in detail here.

[0064] In summary, the negative pressure integrated cover includes a cover body 100 and a first control valve 310. The cover body 100 is provided with a first flow path channel 101. The cover body 100 is used to install on the tank body 200 of the negative pressure tank. The first flow path channel 101 is used to connect the tank body 200. The first control valve 310 is set in the first flow path channel 101. The negative pressure tank can be used for particle analyzers. Since the control valve is integrated into the cover body 100, the complexity of the external pipeline is simplified, thereby reducing the installation space required for the liquid circuit system of the particle analyzer. At the same time, it facilitates the installation, inspection and maintenance of the liquid circuit system of the particle analyzer.

[0065] The negative pressure tank includes a tank body 200 and the aforementioned negative pressure integrated cover. The negative pressure integrated cover is installed on the tank body 200. The tank body 200 has a negative pressure hole 201 and a negative pressure chamber 202. One end opening of the first flow path channel 101 and the negative pressure hole 201 are both connected to the negative pressure chamber 202. The negative pressure hole 201 is used to connect to a vacuum pump. The negative pressure tank has all the functions of the aforementioned negative pressure integrated cover.

[0066] Meanwhile, the negative pressure tank can empty the liquid inside in real time during operation, thus eliminating the need for a liquid level sensor.

[0067] The particle analyzer includes the aforementioned negative pressure tank and has all the functions of the aforementioned negative pressure tank.

[0068] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A negative pressure integrated cover, suitable for negative pressure tanks, characterized in that, The negative pressure integrated cover includes: A cover (100) having a first flow path channel (101) for mounting on the tank of the negative pressure tank, the first flow path channel (101) for communicating with the tank; and The first control valve (310) is disposed in the first flow path channel (101).

2. The negative pressure integrated cover according to claim 1, characterized in that, The cover (100) is also provided with a second flow path channel (102). The cover (100) has an outer wall and an inner wall. The inner wall is for facing the inside of the tank. One end of the first flow path channel (101) is located on the inner wall. The inlet and outlet of the second flow path channel (102) are both located on the outer wall. The negative pressure integrated cover also includes a second control valve (320), which is disposed in the second flow path channel (102).

3. The negative pressure integrated cover according to claim 2, characterized in that, There are multiple second flow path channels (102) and multiple second control valves (320), and the multiple second flow path channels (102) and multiple second control valves (320) correspond one-to-one.

4. The negative pressure integrated cover according to claim 2, characterized in that, The inlet and outlet of the second flow path (102) are located on the same side of the outer wall.

5. The negative pressure integrated cover according to claim 1, characterized in that, The cover (100) is also provided with a third flow path channel (103), one end of which is used to connect to the tank body. The negative pressure integrated cover also includes a pressure sensor (400), which is connected to the other end of the third flow path channel (103).

6. The negative pressure integrated cover according to claim 1, characterized in that, The cover (100) is also provided with a fourth flow path channel (104) and a pressure relief port (105). One end of the fourth flow path channel (104) is connected to the pressure relief port (105), and the other end of the fourth flow path channel (104) is used to connect to the tank (200). The negative pressure integrated cover also includes a third control valve (330), which is disposed in the fourth flow path channel (104).

7. The negative pressure integrated cover according to claim 6, characterized in that, The negative pressure integrated cover also includes an air filter (500), which is connected to the pressure relief port (105).

8. The negative pressure integrated cover according to claim 1, characterized in that, The negative pressure integrated cover also includes an air intake damping device, which is disposed on the cover body (100) and is connected to the tank body (200).

9. A negative pressure tank, characterized in that, The device includes a tank body and a negative pressure integrated cover as described in any one of claims 1-8, wherein the negative pressure integrated cover is installed on the tank body, the tank body (200) has a negative pressure hole (201) and a negative pressure chamber (202), one end opening of the first flow path channel (101) and the negative pressure hole (201) are both connected to the negative pressure chamber (202), and the negative pressure hole (201) is used to connect a vacuum pump.

10. A particle analyzer, characterized in that, Includes the negative pressure tank as described in claim 9.

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