Positive and negative pressure switching device

Abstract

A positive and negative pressure switching device provided in the invention comprises a check valve, a vacuum generating module, a pressure relief valve and a gas supply module. One end of the vacuum generating module is connected to the check valve. The pressure relief valve is connected to the other end of the vacuum generating module. The gas supply module is connected to the check valve, the vacuum generating module and the pressure relief valve. Thus, the positive and negative pressure switching device can be connected to a specimen container conveying device when in use. By cooperating with the check valve, the vacuum generating module, the pressure relief valve and the gas supply module to form a positive and negative pressure switch, the specimen container is transferred in a stable and fast manner to avoid collision in the specimen container during the transfer process and affect the accuracy of the specimen when being tested, so that the specimen container can be transferred to save time and achieve stable transfer.

Description

Positive and negative pressure switching device This invention provides a positive and negative pressure switching device, particularly a positive and negative pressure switching device that can stably and quickly transport specimen containers to avoid collisions during transport that could affect the accuracy of specimen testing, thereby saving time and ensuring stable transport of specimen containers. Typical specimen container transport equipment uses a blower to create negative pressure and is equipped with a sealed receiving box to receive specimen containers. However, during the process of transporting the sample container to the receiving box, the pressure is often unstable (e.g., too high or too low negative pressure), resulting in insufficient or excessive thrust. This makes the sample container unstable and inefficient during transport, and it can also cause collisions between the sample containers, affecting the accuracy of the sample examination. Therefore, the present invention aims to actively disclose how to invent a positive and negative pressure switching device to achieve time-saving and stable transmission of the sample container during transportation. In view of the shortcomings of the aforementioned conventional technology, the inventor felt that it was not perfect, so he devoted his mind to research and development to overcome them, and then developed a positive and negative pressure switching device, in order to achieve positive and negative pressure switching, so as to transfer the sample container in a stable and fast manner, so as to avoid collision of the sample container during the transport process, which would affect the accuracy of the sample during the test, and thus achieve the effects of saving time and stable transport of the sample container. To achieve the above and other objectives, the present invention provides a positive and negative pressure switching device, comprising: at least one check valve, at least one vacuum generating module, at least one pressure relief valve, and a gas supply module. One end of the vacuum generating module is connected to the check valve; the pressure relief valve is connected to the other end of the vacuum generating module; the gas supply module is connected to the check valve, the vacuum generating module, and the pressure relief valve. In the aforementioned positive and negative pressure switching device, the check valve is connected to the conveying pipe of a sample container conveying device, and the pressure relief valve is connected to the receiving module of the sample container conveying device. In the aforementioned positive and negative pressure switching device, the check valve includes a check valve connector and a check valve controller. The check valve controller is located on the check valve connector, and one end of the vacuum generating module is connected to the check valve connector. In the aforementioned positive and negative pressure switching device, the vacuum generating module includes a vacuum generator, a pressure connector, a first connecting pipe, and a second connecting pipe. The pressure connector connects the vacuum generator to the gas supply module. The first connecting pipe connects one end of the vacuum generator to the check valve, and the second connecting pipe connects the other end of the vacuum generator to the pressure relief valve. In the aforementioned positive and negative pressure switching device, the vacuum generator has a negative pressure zone and a positive pressure zone inside, the negative pressure zone is connected to the positive pressure zone, and the air pressure connector is connected between the negative pressure zone and the positive pressure zone. In the aforementioned positive and negative pressure switching device, the pressure relief valve includes a pressure relief valve connector, a pressure relief valve controller, and a pressure relief groove. The pressure relief valve controller is located on the pressure relief valve connector, and the pressure relief groove is located on the pressure relief valve connector and corresponds to the pressure relief valve controller. The other end of the vacuum generating module is connected to the pressure relief valve connector. In the aforementioned positive and negative pressure switching device, the gas supply module includes an air compressor, at least one first branch, at least one second branch, and at least one third branch. The second branch and the third branch are connected to the air compressor, the first branch is connected to the third branch, the check valve, and the pressure relief valve, and the second branch is connected to the vacuum generating module. The aforementioned positive and negative pressure switching device further includes an electronic control module, which is electrically connected to the gas supply module. The electronic control module sets and controls the gas supply module, causing the gas supply module to drive the check valve, the vacuum generating module, and the pressure relief valve according to the settings of the electronic control module. In the aforementioned positive and negative pressure switching device, the electronic control module includes an operation unit and a setting unit. The operation unit is connected to the setting unit, and the setting unit is connected to the gas supply module. The operation unit inputs setting parameters to the setting unit, and the setting unit receives the setting parameters to drive the gas supply module. Therefore, the positive and negative pressure switching device of the present invention can be connected to the specimen container conveying equipment when in use. By cooperating with the check valve, vacuum generation module, pressure relief valve and gas supply module, positive and negative pressure switching is formed to transfer the specimen container in a stable and fast manner, so as to avoid collision of the specimen container during the transport process, which would affect the accuracy of the specimen during the test. This allows the specimen container to achieve the effects of saving time and stable transport during the transport process. To fully understand the purpose, features, and effects of this invention, the invention will be described in detail below with reference to the specific embodiments and accompanying drawings, as follows: Please refer to Figures 1 to 3. As shown in the figures, the present invention provides a positive and negative pressure switching device 1, which includes: at least one check valve 11, at least one vacuum generating module 12, at least one pressure relief valve 13, and a gas supply module 14; and the check valve 11, the vacuum generating module 12, the pressure relief valve 13, and the gas supply module 14 can be disposed on a body 10. One end of the vacuum generating module 12 is connected to the check valve 11. The pressure relief valve 13 is connected to the other end of the vacuum generating module 12. The gas supply module 14 is connected to the check valve 11, the vacuum generating module 12, and the pressure relief valve 13. When in use, the positive and negative pressure switching device 1 of the present invention can be installed on the ceiling or other desired location with the base 10, and connected to the conveying pipe 21 of a specimen container conveying device 2 by the check valve 11, and the pressure relief valve 13 is connected to the receiving module 22 of the specimen container conveying device 2, and the required specimen container 3 is conveyed from the conveying pipe 21 of the specimen container conveying device 2 to the receiving module 22 of the specimen container conveying device 2 via the positive and negative pressure switching device 1. When the positive and negative pressure switching device 1 of the present invention transports the specimen container 3, the gas supply module 14 can continuously supply gas to the check valve 11, the vacuum generating module 12 and the pressure relief valve 13. When the specimen container 3 passes through the vacuum generating module 12, the check valve 11 is activated to prevent gas from entering or leaving through the check valve 11, allowing the vacuum generating module 12 to switch between negative and positive pressure. At the same time, the pressure relief valve 13 is closed to allow the specimen container 3 to move towards the pressure relief valve 13 after passing through the check valve 11 and being pressurized in the pipeline of the vacuum generating module 12. This allows the specimen container 3 to move towards the receiving module 22 of the specimen container transport device 2 with positive pressure in the pipeline of the vacuum generating module 12. In this way, the positive and negative pressure can be switched by the cooperation of the check valve 11, the vacuum generation module 12, the pressure relief valve 13 and the gas supply module 14, so as to transmit the specimen container 3 in a stable and fast manner, thereby avoiding collisions of the specimen container 3 during the transportation process and affecting the accuracy of the specimen during the test, so that the specimen container 3 can achieve the effects of saving time and stable transmission during transportation. In addition, in one embodiment of the present invention, the number of the check valve 11, the vacuum generating module 12 and the pressure relief valve 13 can be set to one (as shown in FIG1) or more (as shown in FIG2) according to the transport requirements of the specimen container 3, so that the present invention can better meet the needs of practical application. In addition to the above embodiments, in one embodiment of the present invention, the check valve 11 includes a check valve connector 111 and a check valve controller 112. The check valve controller 112 is disposed on the check valve connector 111. One end of the vacuum generating module 12 and the delivery pipe 21 are connected to the check valve connector 111. Thus, by cooperating with the check valve connector 111, the check valve controller 112 and the gas supply module 14, the vacuum generating module 12, in conjunction with the check valve 11 and the pressure relief valve 13, can switch between negative and positive pressure to achieve stability during operation. In addition to the above embodiments, in one embodiment of the present invention, the vacuum generating module 12 includes a vacuum generator 121, a pressure connector 122, a first connecting pipe 123, and a second connecting pipe 124. The pressure connector 122 connects the vacuum generator 121 to the gas supply module 14. The first connecting pipe 123 connects one end of the vacuum generator 121 to the check valve connecting seat 111 of the check valve 11. The second connecting pipe 124 connects the other end of the vacuum generator 121 to the pressure relief valve 13. The vacuum generator 121 has a negative pressure zone 1211 and a positive pressure zone 1212 inside. The negative pressure zone 1211 communicates with the positive pressure zone 1212, and the pressure connector 122 is connected between the negative pressure zone 1211 and the positive pressure zone 1212. Based on the above embodiments, the gas supply module 14 can transmit gas to the pressure connector 122 and control the check valve 11 to open, so that the airflow forms a negative pressure and moves towards the vacuum generator 121. The gas passing through the check valve 11 enters the negative pressure zone 1211 through the first connecting pipe 123, while the gas passing through the pressure connector 122 is vacuumed into the positive pressure zone 1212. The negative pressure zone 1211 forms compression, and at the same time, the positive pressure zone 1212 diffuses the gas, so that the vacuum generator 121 forms a switching between negative and positive pressure. After the specimen container 3 passes through the check valve 11, it moves through the second connecting pipe 124 of the vacuum generator 121 towards the pressure relief valve 13 and then to the receiving module 22 of the specimen container conveying device 2. In this way, the positive and negative pressure can be switched by the cooperation of the check valve 11, the vacuum generation module 12, the pressure relief valve 13 and the gas supply module 14, so as to transmit the specimen container 3 in a stable and fast manner, thereby avoiding collisions of the specimen container 3 during the transportation process and affecting the accuracy of the specimen during the test, so that the specimen container 3 can achieve the effects of saving time and stable transmission during transportation. In addition to the above embodiments, in one embodiment of the present invention, the pressure relief valve 13 includes a pressure relief valve connector 131, a pressure relief valve controller 132, and a pressure relief groove 133. The pressure relief valve controller 132 is disposed on the pressure relief valve connector 131, and the pressure relief groove 133 is disposed on the pressure relief valve connector 131 and corresponds to the pressure relief valve controller 132. The second connecting pipe 124 at the other end of the vacuum generating module 12 is connected to the pressure relief valve connector 131, and the pressure relief valve connector 131 is connected to the receiving module 22 of the specimen container conveying device 2. Based on the above embodiments, when the gas transmitted through the vacuum generator 121 is transmitted to the pressure relief valve 13, the pressure relief valve controller 132 can open the pressure relief valve connector 131 and the pressure relief groove 133, so that when the gas is transmitted to the pressure relief valve connector 131, it is simultaneously depressurized by the pressure relief groove 133, allowing the specimen container 3 to move to the receiving module 22 of the specimen container conveying device 2 after passing through the pressure relief valve connector 131. In this way, the cooperation of the check valve 11, the vacuum generator module 12, the pressure relief valve 13 and the gas supply module 14 can form a switching between positive and negative pressure, so as to transmit the specimen container 3 in a stable and fast manner, avoiding collisions of the specimen container 3 during the conveying process and affecting the accuracy of the specimen during testing, thus achieving the effects of saving time and stable transmission of the specimen container 3 during the conveying process. In addition to the above embodiments, in one embodiment of the present invention, the gas supply module 14 includes an air compressor 141, at least one first splitter 142, at least one second splitter 143, and at least one third splitter 144. The second splitter 143 and the third splitter 144 are connected to the air compressor 141. The first splitter 142 is connected to the third splitter 144, the check valve 11, and the pressure relief valve 13. The second splitter 143 is connected to the vacuum generating module 12. Based on the above embodiments, when the positive and negative pressure switching device 1 of the present invention transports the specimen container 3, the air compressor 141 can simultaneously supply air to the second distributor 143 and the third distributor 144. The second distributor 143 guides the gas to the vacuum generator 121 via the air pressure connector 122, while the third distributor 144, in conjunction with the first distributor 142, guides the gas to the check valve 11 and the pressure relief valve 13. This allows the air compressor 141, the first distributor 142, and the third distributor 144 to simultaneously supply air to the check valve 11 and the pressure relief valve 13. The second distributor 143 and the third distributor 144 work together to continuously supply gas to the check valve 11, the vacuum generating module 12 and the pressure relief valve 13, enabling the check valve 11 and the vacuum generating module 12 to switch between negative and positive pressure, and simultaneously releasing gas through the pressure relief valve 13. This allows the specimen container 3 to move from the check valve 11 to the pressure relief valve 13 via the vacuum generating module 12, thus achieving stability during operation. In addition to the above embodiments, in one embodiment of the present invention, the positive and negative pressure switching device 1 further includes an electronic control module 4. The electronic control module 4 is electrically connected to the air compressor 141 of the gas supply module 14. The electronic control module 4 can be used to set and control the gas supply module 14, so that the air compressor 141 of the gas supply module 14, in conjunction with the first splitter 142, the second splitter 143 and the third splitter 144, drives the check valve controller 112 of the check valve 11, the vacuum generator 121 of the vacuum generating module 12 and the pressure relief valve controller 132 of the pressure relief valve 13 according to the setting of the electronic control module 4. In one embodiment of the present invention, the electronic control module 4 includes an operation unit 41 and a setting unit 42. The operation unit 41 is connected to the setting unit 42, and the setting unit 42 is connected to the air compressor 141 of the gas supply module 14. The operation unit 41 inputs setting parameters to the setting unit 42, and the setting unit 42 receives the setting parameters to drive the air compressor 141 of the gas supply module 14. In one embodiment of the present invention, the operation unit 41 may be a computer or various human-machine interfaces. When in use, the operation unit 41 may be integrated into the specimen container delivery device 2 or separately set in the required position. The setting unit 42 may be a central processing unit, chip, programmable controller, software or logic circuit, and the setting unit 42 may be integrated with the operation unit 41 and separately set in the required position. Based on the above embodiments, when in use, the operation unit 41 can input various setting parameters to the setting unit 42, such as the control schedule of the check valve controller 112, the control schedule of the pressure relief valve controller 132, the control schedule of the air compressor 141, and the control schedule of the second splitter 143, so that the setting unit 42 receives the setting parameters to drive the check valve controller 112, the pressure relief valve controller 132, the air compressor 141, and the second splitter 143, thereby achieving the effect of automatic control. The present invention has been disclosed above with reference to preferred embodiments. However, those skilled in the art should understand that these embodiments are merely illustrative of the invention and should not be construed as limiting its scope. It should be noted that all variations and substitutions equivalent to these embodiments should be considered within the scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims. 1: Positive and negative pressure switching device; 10: Base body; 11: Check valve; 111: Check valve connector; 112: Check valve controller; 12: Vacuum generating module; 121: Vacuum generator; 1211: Negative pressure zone; 1212: Positive pressure zone; 122: Air pressure connector; 123: First connecting pipe; 124: Second connecting pipe; 13: Pressure relief valve; 131: Pressure relief valve connector; 132: Pressure relief valve controller; 133: Pressure relief groove; 14: Gas supply module; 141: Air compressor; 142: First distributor; 143: Second distributor; 144: Third distributor; 2: Specimen container conveying equipment; 21: Conveying pipe; 22: Receiving module; 3: Specimen container; 4: Electrical control module; 41: Operating unit; 42: Setting unit. [Figure 1] is a perspective view of the present invention. [Figure 2] is a first view of the present invention in use. [Figure 3] is a second view of the present invention in use. 1: Positive and negative pressure switching device 10: base body 11: Check valve 111: Check valve connection seat 112: Check Valve Controller 12: Vacuum generation module 121: Vacuum Generator 122: Air pressure connector 123: First connecting pipe 124: Second connecting pipe 13: Pressure relief valve 131: Pressure relief valve connection seat 132: Pressure relief valve controller 133: Pressure relief groove 14: Gas Supply Module 141: Air compressor 142: First splitter 143: Second splitter 144: Third splitter 21: Conveyor Pipe 4: Electronic control module 41: Operation Unit 42: Setting Unit

Claims

1. A positive / negative pressure switching device includes: at least one check valve; at least one vacuum generating module, one end of which is connected to the check valve; at least one pressure relief valve, which is connected to the other end of the vacuum generating module; and a gas supply module, which is connected to the check valve, the vacuum generating module and the pressure relief valve. As described in claim 1, the positive and negative pressure switching device, wherein the check valve is connected to the conveying pipe of a sample container conveying device, and the pressure relief valve is connected to the receiving module of the sample container conveying device. As described in claim 1, the positive and negative pressure switching device includes a check valve connector and a check valve controller. The check valve controller is located on the check valve connector, and one end of the vacuum generating module is connected to the check valve connector. The positive and negative pressure switching device as described in claim 1, wherein the vacuum generating module includes a vacuum generator, a pressure connector, a first connecting pipe and a second connecting pipe, the pressure connector connects the vacuum generator to the gas supply module, the first connecting pipe connects one end of the vacuum generator to the check valve, and the second connecting pipe connects the other end of the vacuum generator to the pressure relief valve. As described in claim 4, the positive and negative pressure switching device has a negative pressure zone and a positive pressure zone inside the vacuum generator, the negative pressure zone is connected to the positive pressure zone, and the air pressure connector is connected between the negative pressure zone and the positive pressure zone. As described in claim 1, the positive and negative pressure switching device includes a pressure relief valve connector, a pressure relief valve controller, and a pressure relief groove. The pressure relief valve controller is located on the pressure relief valve connector, and the pressure relief groove is located on the pressure relief valve connector and corresponds to the pressure relief valve controller. The other end of the vacuum generating module is connected to the pressure relief valve connector. The positive and negative pressure switching device as described in claim 1, wherein the gas supply module includes an air compressor, at least one first branch, at least one second branch, and at least one third branch, wherein the second branch and the third branch are connected to the air compressor, the first branch is connected to the third branch, the check valve and the pressure relief valve, and the second branch is connected to the vacuum generating module. The positive and negative pressure switching device as described in claim 1 further includes an electronic control module that is electrically connected to the gas supply module. The electronic control module sets and controls the gas supply module, causing the gas supply module to drive the check valve, the vacuum generating module, and the pressure relief valve according to the settings of the electronic control module. The positive / negative pressure switching device as described in claim 8, wherein... The electronic control module includes an operation unit and a setting unit. The operation unit is connected to the setting unit, and the setting unit is connected to the gas supply module. The operation unit inputs setting parameters to the setting unit, and the setting unit receives the setting parameters to drive the gas supply module.

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