Air handling units for operating room ventilation systems

Abstract

The present invention belongs to the field of air conditioning processing technology, and relates to an air handling device for an operating room ventilation system, including a ventilation duct, a connector fixed on the ventilation duct, and a filter assembly. The connector includes a U-shaped main body and a cover plate. A long slot hole is provided on the bottom wall of the ventilation duct, and the main body is inserted into the ventilation duct through the long slot hole and fixedly connected to the ventilation duct. The lower end of the main body extends to the lower end of the long slot hole and is connected to the cover plate. The cover plate can be connected to the bottom wall of the ventilation duct. Left and right opposite flanges are respectively provided on the inner wall surface of the front end plate of the main body and the inner wall surface of the rear end plate of the main body. The filter assembly can be inserted into the main body from bottom to top, and its left and right sides can be clamped between the left and right opposite flanges. The present invention improves the structural form of the filter assembly, which can make the installation and disassembly of the filter assembly simple and quick, which helps to improve the working efficiency and reduce the workload of the operators.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning processing, and in particular to an air processing device used in a ventilation system of an operating room. Background Art

[0002] In hospital buildings, according to the characteristics of hospital buildings and the requirements for indoor air quality, natural or mechanical methods are used to allow outdoor air to enter the room to remove indoor pollutants or excess heat and humidity, thereby creating a healthy and comfortable hospital indoor environment. At the same time, for spaces such as hospital operating rooms that require constant temperature and humidity conditions, independent air systems are generally set up separately. In order to ensure that the air quality in hospital operating rooms meets the requirements, it is necessary to regularly inspect, clean and replace the filter devices in the ventilation ducts of the air handling devices set in the ventilation system. In particular, the front-stage filter screen located on the upstream side of the ventilation duct of the air handling device is mainly used to filter external dust, relatively large floccules and suspended matter in the air. After a period of use, it needs to be cleaned regularly or even replaced, so the frequency of disassembly and assembly is relatively high. The main purpose of this operation is to avoid the situation where the overall filtering performance of the air handling device is significantly reduced due to excessive accumulation of dust, floccules, etc. on the filter screen in the filter assembly. When cleaning or replacing the filter screen in the filter assembly, the filter screen needs to be removed from the ventilation duct of the air handling unit. However, due to the limitation of the structural form of the existing air treatment device for fixing the filter assembly, there are problems such as great difficulty in disassembly and installation of the filter assembly and low operation efficiency. Summary of the invention

[0003] The present invention provides an air handling device for an operating room ventilation system, which improves the structural form of the air handling device for carrying and fixing a filter assembly, and can make the installation and disassembly of the filter assembly on the air handling device simple and quick, thereby helping to improve the efficiency of the installation and disassembly of the filter assembly and reduce the workload of operators.

[0004] The technical solution adopted by the present invention to solve the technical problem is: an air treatment device for an operating room ventilation system, comprising a connector fixed on a ventilation duct and a filter assembly. The connector comprises a U-shaped main body and a cover plate.

[0005] The bottom wall of the ventilation duct is provided with a long slot hole. After the main body is inserted into the ventilation duct through the long slot hole and fixedly connected to the ventilation duct as a whole, a sealing matching relationship can be established between the top plate of the main body and the inner top surface of the ventilation duct, and between the front and rear end plates of the main body and the front and rear inner wall surfaces of the ventilation duct. The lower end of the main body extends to the lower end of the long slot hole and is fixedly connected to the cover plate. In this way, the flow channel of the ventilation duct and the cavity on the connector form a through passage in the upstream and downstream directions for air circulation.

[0006] The cover plate can establish a fixed connection relationship with the bottom wall of the ventilation duct through bolts.

[0007] Two flanges opposite to each other are respectively arranged on the inner wall surfaces of the front and rear end plates of the main body. The flanges are distributed in the vertical direction and vertically penetrate the inner wall surface of the front end plate and / or the inner wall surface of the rear end plate.

[0008] After the filter assembly is inserted into the main body from bottom to top, the left and right sides of the outer shell of the filter assembly can be clamped between the left and right opposite flanges, so that the filter assembly can be plugged into the connector. At this time, the axial hole on the filter assembly can form a ventilation duct that passes through in the left and right directions with the cavity of the connector and the flow channel of the ventilation duct.

[0009] A sealing strip is provided between the opposite surfaces of the outer shell and the flange. Specifically, the sealing strip can be fixedly embedded at the positions near the front and rear edges on the left side of the outer shell and at the positions near the front and rear edges on the right side of the outer shell. After the filter assembly is inserted into the main body, the inner side of the flange can contact the sealing strip on the outer shell, and the sealing strip is elastically deformed by pressing, so that a sealing matching relationship is established between the contact surfaces of the outer shell and the flange.

[0010] During operation, it is only necessary to remove the cover plate from the bottom wall of the ventilation duct and the lower end of the main body, and the filter assembly can be quickly and conveniently removed from the connector. After cleaning the filter screen of the filter assembly, it is only necessary to push the filter assembly upward to install it back into the connector. After the cover plate is fixedly connected to the lower end of the main body and the bottom wall of the ventilation duct, the operation is completed. Therefore, the above-mentioned improvement scheme makes the installation and disassembly of the filter assembly on the air handling device simple and quick, helps to improve the efficiency of the installation and disassembly of the filter assembly, reduces the workload of the operators, and can ensure the firmness of the installation of the filter assembly and the tightness of the cooperation with the relevant structures on the ventilation duct, which can effectively suppress the vibration of the filter assembly relative to the ventilation duct.

[0011] Optionally, an edge arm extending to the left or right is formed at the lower end of the flange, and a threaded through hole with an axis in the vertical direction is formed on the edge arm. A sink groove is formed on the bottom wall of the ventilation duct corresponding to the lower end of the long slot hole, and threaded sink holes with an axis in the vertical direction are distributed on the inner bottom surface of the sink groove.

[0012] A fixed connection relationship is established between the cover plate and the threaded through hole on the edge arm and between the cover plate and the threaded countersunk hole on the bottom surface of the sink groove through bolts, so that the cover plate is fixed at the lower port of the main body and on the bottom wall of the ventilation duct.

[0013] Optionally, it also includes at least four pairs of assembly blocks and a clamping block assembly configured on each assembly block.

[0014] Strip notches are formed at the upper and lower parts of the flange and are distributed in the vertical direction. Card slots are formed on the left and right sides of the shell at positions close to the front and rear edges of the sides. After the filter assembly is installed in the main body, the card slots can correspond to the strip notches respectively.

[0015] The assembly blocks are respectively fixed on the inner wall surfaces of the front end plate and the rear end plate of the main body and are relatively arranged on the outer side of the flange and correspond to the strip-shaped notches one by one.

[0016] The block assembly comprises a rotating block part and a control part. The rotating block part is pivotally matched with the assembly block so that the rotating block part can rotate relative to the assembly block in a vertical plane extending in the left-right direction.

[0017] The rotating block is provided with a latching protrusion that can correspond to the latching slot provided on the housing. In the initial state, the latching protrusion can pass through the strip notch provided at the corresponding position toward the left or toward the right, and respectively penetrate into the inner side of the flange provided on the same side, and after the housing is installed into the main body, it can be ensured that the free end of the latching protrusion can be latched in the latching slot.

[0018] The control part is fixed on the assembly block and matches the body of the rotating block part. The control part can apply elastic force on the body of the rotating block part, so that after the rotating block part rotates, the elastic force can be used to force the clamping protrusion on the rotating block part to return to its initial position.

[0019] The extension length of the strip notch in the vertical direction can provide sufficient clearance space for the rotating block part to rotate upward and rotate downward relative to the assembly block.

[0020] Optionally, an edge arm extending toward the left or right side is formed at the lower end of the flange, and a countersunk hole with an axis in the vertical direction is formed on the edge arm. An insertion hole with an axis in the vertical direction is formed on the cover plate.

[0021] It also includes a plurality of locking assemblies that match the flanges one by one. The locking assembly includes a plurality of limit blocks, an elastic member, a radial flange and an insertion rod. The outer diameter of the radial flange is larger than the inner diameter of the insertion hole. The insertion rods are distributed along the vertical direction and are relatively arranged on the outer side of the flange. The radial flange is formed at the lower part of the insertion rod and the lower end of the insertion rod is inserted into the insertion hole on the cover plate. The elastic member is mounted on the insertion rod and the upper end of the elastic member contacts the inner bottom surface of the countersunk hole on the edge arm, and the lower end contacts the upper end surface of the radial flange.

[0022] The limit blocks are fixedly distributed at the upper and lower ends of the insertion rod and are matched one by one with the rotating block parts provided on each assembly block. After the cover plate is fixed to the lower end of the main body, the cover plate can push the insertion rod to move upward, causing the elastic member to be compressed and deformed, and at the same time, each limit block moves upward to contact with the corresponding matching rotating block part, which can prevent the rotating block part from rotating downward.

[0023] During the disassembly operation, after the cover plate is removed from the main body, the elastic member can stretch and deform to push the corresponding insertion rod to move downward, causing the limit blocks on the insertion rod to move downward a certain amount of stroke relative to their corresponding matching rotating block parts to release the rotating block parts, so that the rotating block parts can resume the state of being able to rotate downward.

[0024] Optionally, the elastic member is a spring member or a spring-shaped sleeve member.

[0025] Optionally, a gear surface is formed on the body of the rotating block. The control part includes a base, a strip-shaped slider and a pair of springs.

[0026] The strip slider matches the linear slide rail structure provided on the base, so that the strip slider can reciprocate relative to the base along the length direction of the base. A rack body is formed on the strip slider and the rack body is meshed with the gear surface on the rotating block part, so that when the rotating block part rotates, the strip slider can be moved relative to the base.

[0027] The two springs are arranged on the base in a relative manner and match the ends of the strip slider. When the strip slider moves relative to the base, the strip slider can selectively cause one of the two springs to be compressed and deformed. When the external obstacle that blocks the rotating block from returning to the initial position is eliminated, the elastic force of the compressed and deformed spring acting on the strip slider can cause it to push the rotating block to rotate, thereby completing the reset.

[0028] Optionally, a plurality of clamping block assemblies are matched and arranged on each assembly block, and the clamping block assemblies arranged on the same assembly block are distributed alternately in the vertical direction.

[0029] The number of the card slots arranged on the housing is consistent with the number of the card block assemblies, and the rotating block parts of each card block assembly are matched with each card slot one by one, so that the card protrusions on the rotating block parts can be respectively inserted into the corresponding matching card slots.

[0030] Optionally, the protrusion is triangular in shape and the tip of the protrusion faces one side of the flange and can pass through the strip notch at the corresponding position and extend into the inner side of the flange; correspondingly, the slot is also triangular in shape and the tip of the slot is the inner end.

[0031] Optionally, the size of the outer port of the card slot is larger than the size of the root of the card protrusion. The height of the card protrusion is larger than the depth of the card slot.

[0032] The beneficial effects of the present invention are as follows: the present invention improves the structural form used to carry and fix the filter assembly on the air handling device, which can make the installation and disassembly operations of the filter assembly on the air handling device simple and quick, which helps to improve the efficiency of the installation and disassembly operations of the filter assembly and reduce the workload of the operators. At the same time, it can ensure the firmness and tightness of the filter assembly fixed on the ventilation duct, suppress the degree of vibration in the operating state, and significantly reduce the noise generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention in the main viewing direction.

[0034] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0035] Figure 3 for Figure 1 Schematic diagram of the local enlarged structure at point B in the middle.

[0036] Figure 4 The figure is a schematic diagram showing the state of removing the filter assembly from the ventilation duct of the air handling unit.

[0037] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at point C in the middle.

[0038] Figure 6 for Figure 4 Schematic diagram of the local enlarged structure at point D in the middle.

[0039] Figure 7 It is a schematic diagram of the top structure of the present invention.

[0040] Figure 8 This is a schematic diagram of the structure of the matching between the rotating block part and the control part of the block assembly (when the top cover is not installed on the base).

[0041] In the figure: 10 ventilation duct, 11 flow channel, 12 sink groove; 20 connecting piece, 21 top plate, 22 end plate, 23 flange, 231 strip notch, 24 edge arm, 241 threaded through hole, 242 sink hole, 25 cover plate, 251 jack, 26 cavity; 30 filter assembly, 31 shell, 32 shaft hole, 33 slot; 40 assembly block, 41 pivot; 50 block assembly, 51 rotating block part, 511 clamping protrusion, 512 gear surface, 52 control part, 521 base, 5211 convex rail, 5212 U-shaped flange, 522 top cover, 523 strip slider, 5231 rack body, 524 first spring, 525 second spring, 526 shaft block, 60 locking assembly, 61 limit block, 62 elastic member, 63 radial flange, 64 plug rod. DETAILED DESCRIPTION

[0042] The structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention. At the same time, the terms such as "upper", "lower", "front", "back", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical contents.

[0043] like Figures 1 to 8 An air handling device for an operating room ventilation system is shown, comprising a connector 20 fixed to a ventilation duct 10, a filter assembly 30 (the specific structural form can be found in the prior art), four pairs of assembly blocks 40, a clamping block assembly 50 arranged on each assembly block 40, and four locking assemblies 60.

[0044] The bottom wall of the ventilation duct 10 is provided with a long slot. The connecting member 20 includes a U-shaped main body and a cover plate 25 .

[0045] After the main body is inserted into the ventilation duct 10 through the long slot hole and fixedly connected to the ventilation duct 10 as a whole, a sealing matching relationship can be established between the top plate 21 of the main body and the inner top surface of the ventilation duct 10, and between the front and rear end plates of the main body and the front and rear inner wall surfaces of the ventilation duct 10. The lower end of the main body extends to the lower end of the long slot hole and is fixedly connected to the cover plate 25. In this way, the flow channel 11 of the ventilation duct 10 and the cavity 26 on the connector 20 form an air duct passage that is connected in the upstream and downstream directions (i.e., the left and right directions in the figure) for air circulation.

[0046] The cover plate 25 can be connected to the bottom wall of the ventilation duct 10 by bolts. Specifically, a sink groove 12 is formed on the bottom wall of the ventilation duct 10 corresponding to the lower end of the long slot hole, and threaded countersunk holes with axes along the vertical direction are distributed on the inner bottom surface of the sink groove 12. The cover plate 25 and the threaded countersunk holes on the inner bottom surface of the sink groove 12 are fixedly connected by bolts, so that the cover plate 25 is fixed to the bottom wall of the ventilation duct 10.

[0047] On the opposite surfaces of the two end plates 22 on the main body, opposite flanges 23 are provided. The flanges 23 are distributed in the vertical direction and vertically penetrate the inner wall surface of the end plate 22. The two flanges 23 on the front end plate 22 and the two flanges 23 on the rear end plate 22 are respectively opposite to each other front and back, that is, the two flanges 23 on the left side of the end plate 22 are distributed on the vertical plane extending in the front-back direction, and the two flanges 23 on the right side of the end plate 22 are distributed on the vertical plane extending in the front-back direction, and the two vertical planes are relatively parallel.

[0048] An edge arm 24 extending to the left or right is formed at the lower end of the flange 23, and a threaded through hole 241 with an axis in the vertical direction is formed on the edge arm 24. The cover plate 25 and the threaded through hole 241 on the edge arm 24 are fixedly connected by bolts, so that the cover plate 25 is fixed at the lower end of the main body.

[0049] The filter assembly 30 can be inserted into the main body from bottom to top. The left and right sides of the housing 31 of the filter assembly 30 can be clamped between the left and right opposite flanges 23, so that the filter assembly 30 can be plugged into the connector 20. At this time, the axial hole 32 on the filter assembly 30 can form a ventilation pipeline that passes through in the left and right directions together with the cavity 26 of the connector 20 and the flow channel 11 of the ventilation duct 10.

[0050] A sealing strip is provided between the opposite surfaces of the shell 31 and the flange 23. Specifically, the sealing strip can be fixedly embedded at the positions near the front and rear edges on the left side of the shell 31 and at the positions near the front and rear edges on the right side of the shell 31. After the filter assembly 30 is inserted into the main body, the inner side surface of the flange 23 can contact the sealing strip on the shell 31, and the sealing strip is elastically deformed by pressing, so that a good sealing matching relationship is established between the contact surfaces of the shell 31 and the flange 23.

[0051] During operation, the filter assembly 30 can be quickly and conveniently removed from the connector 20 by only removing the cover plate 25 from the bottom wall of the ventilation duct 10 and the lower end of the main body. After cleaning the filter screen of the filter assembly 30, the filter assembly 30 can be installed back into the connector 20 by only pushing upwards, and the operation is completed after the cover plate 25 is fixedly connected to the lower end of the main body and the bottom wall of the ventilation duct 10. Therefore, the above-mentioned improvement scheme makes the installation and disassembly of the filter assembly 30 on the air handling device simple and quick, helps to improve the efficiency of the installation and disassembly of the filter assembly 30, reduces the workload of the operators, and can ensure the firmness and tightness of the connection.

[0052] Strip notches 231 are formed at the upper and lower parts of each flange 23, and the strip notches 231 are distributed in the vertical direction. Card slots 33 are formed on the left and right sides of the shell 31 at positions close to the front and rear edges of each side. After the filter assembly 30 is installed in the main body, the card slots 33 can correspond to each strip notch 231 one by one. In the illustrated scheme, the number of card slots 33 corresponding to each strip notch 231 is two, and two card block assemblies 50 are matched on each assembly block 40, and the card block assemblies 50 configured on the same assembly block 40 are alternately distributed in the vertical direction.

[0053] The assembly blocks 40 are respectively fixed on the inner wall surfaces of the end plates 22 formed on the front and rear sides of the main body and are relatively arranged on the outer side of the flange 23 and correspond to each strip-shaped notch 231 one by one.

[0054] The block assembly 50 includes a rotating block portion 51 and a control portion 52 .

[0055] The rotating block 51 matches the assembly block 40 via the pivot 41, so that the rotating block 51 can rotate relative to the assembly block 40 in a vertical plane extending in the left-right direction. At the same time, a latching protrusion 511 is provided on the rotating block 51, which can correspond to the latching slot 33 provided on the housing 31.

[0056] In the initial state, the latching protrusion 511 can pass through the strip notch 231 configured at the corresponding position toward the left side or can pass through the strip notch 231 configured at the corresponding position toward the right side, and respectively penetrate into the inner side of the flange 23 provided on the same side, and after the shell 31 is fully loaded into the body, it is ensured that the free end of the latching protrusion 511 can be inserted into / stuck in the latching groove 33, as shown in FIG. Figures 1 to 3 shown.

[0057] The control part 52 is fixed on the assembly block 40 and matches the body of the rotating block part 51. The control part 52 can apply elastic force to the body of the rotating block part 51, so that after the rotating block part 51 rotates upward or downward, the elastic force can be used to force the clamping protrusion 511 on the rotating block part 51 to return to its position in the initial state.

[0058] Specifically, Figure 8 As shown, a gear surface 512 is formed on the body of the rotating block 51. The control unit 52 includes a base 521, a top cover 522, a strip slider 523, a first spring 524, a second spring 525 and two shaft blocks 526 respectively arranged at both ends of the base 521 in the length direction.

[0059] The base 521 is formed with a groove and a convex rail 5211 extending along the length direction of the base 521 is provided on the bottom surface of the groove. The strip-shaped slider 523 matches the convex rail 5211 provided on the base 521, so that the strip-shaped slider 523 can move back and forth relative to the base 521 along the length direction of the base 521. It can be seen that the length of the strip-shaped slider 523 is smaller than the extension length of the groove provided on the base 521, so as to provide sufficient travel space for the strip-shaped slider 523 to move relative to the base 521.

[0060] On the base 521, a long strip-shaped notch is formed on the wall body facing the rotating block 51. A rack body 5231 is formed on the strip-shaped slider 523, and the rack body 5231 can pass through the long strip-shaped notch and mesh with the gear surface 512 provided on the rotating block 51, so as to achieve the purpose of causing the strip-shaped slider 523 to move relative to the base 521 when the rotating block 51 rotates, and to achieve the purpose of causing the rotating block 51 to have a tendency to rotate when the strip-shaped slider 523 is subjected to elastic force (to be mentioned in the next paragraph), and to enable the locking protrusion 511 on the rotating block 51 to complete reset and return to the position in the initial state after the external obstacles are eliminated.

[0061] The first spring 524 and the second spring 525 are arranged on the base 521 opposite to each other and are located at the two ends in the length direction of the base 521. The two ends of the first spring 524 are matched with the axon formed by the shaft block 526 on the same side and one end of the strip slider 523, and the two ends of the second spring 525 are matched with the axon formed by the shaft block 526 on the same side and the other end of the strip slider 523. When the strip slider 523 moves relative to the base 521, the strip slider 523 can selectively cause one of the two springs to be compressed and deformed.

[0062] After the strip slider 523, the first spring 524, the second spring 525 and the shaft block 526 are installed on the base 521, the top cover 522 is sealed on the upper end of the groove of the base 521. Figure 8 As shown, U-shaped flanges 5212 are formed at both ends of the base 521, and a flange body structure corresponding to the U-shaped flanges 5212 is provided on the top cover 522 to fix the base 521 and the top cover 522 together. The bottom surface of the strip-shaped slider 523 corresponds to the two convex rails 5211 provided on the base 521, and at the same time, a linear groove corresponding to the linear convex rails on the top cover 522 is provided on the top surface of the strip-shaped slider 523, so that the strip-shaped slider 523 can move stably relative to the base 521 and the top cover 522, which helps to ensure the stability and reliability of the meshing effect between the rack body 5231 and the gear surface 512.

[0063] When the housing 31 is pulled out of the main body, the relative movement between the wall of the housing 31 and the latching protrusion 511 can cause the rotating block 51 to rotate downward. Figures 4 to 6 On the contrary, when the housing 31 is installed back into the main body, the relative movement between the wall surface of the housing 31 and the latching protrusion 511 can cause the rotating block portion 51 to rotate upward.

[0064] After the shell 31 is pulled out from the main body, the obstruction and driving effects of the shell 31 on the clamping protrusion 511 are eliminated. At this time, the control unit 52 can drive the rotating block 51 to rotate in the opposite direction (relative to the direction in which the rotating block 51 rotates when the shell 31 is pulled out from the main body), so that the clamping protrusion 511 is reset to its initial state. After the shell 31 is completely installed in the main body, the clamping groove 33 provided on the shell 31 or the filter assembly 30 just corresponds to the clamping protrusion 511, and can provide a space for each clamping protrusion 511, so that the obstruction of the shell 31 on the clamping protrusion 511 is eliminated. At this time, the control unit 52 can also drive the rotating block 51 to rotate in the opposite direction (relative to the direction in which the rotating block 51 rotates when the shell 31 is installed in the main body), so that the clamping protrusion 511 is reset to its initial state.

[0065] like Figure 8As shown, when the rotating block part 51 rotates downward in the clockwise direction, with the meshing and matching relationship between the gear surface 512 and the rack body 5231, the rotating block part 51 can drive the strip-shaped slider 523 to move toward the upper left relative to the base 521, causing the first spring 524 to be compressed and deformed, during which the second spring 525 can be stretched and deformed at the same time. At this time, the strip-shaped slider 523 will be subjected to an elastic force toward the lower right, so that the strip-shaped slider 523 has a tendency to move back to the initial state position. After the shell 31 is completely removed from the main body, the obstruction of the shell 31 on the rotating block part 51 is eliminated, and the strip-shaped slider 523 is prompted to reset under the action of the elastic force, so as to drive the rotating block part 51 to rotate upward in the counterclockwise direction, and the latching protrusion 511 is reset to its initial state position. Figures 1 to 3 and Figure 8 The position and arrangement of the clamping protrusion 511 described in the figure.

[0066] like Figure 8 As shown, when the rotating block part 51 rotates upward in the clockwise direction, with the meshing matching relationship between the gear surface 512 and the rack body 5231, the rotating block part 51 can drive the strip-shaped slider 523 to move toward the lower right relative to the base 521, so that the second spring 525 is compressed and deformed, and the first spring 524 can be stretched and deformed at the same time. At this time, the strip-shaped slider 523 will be subjected to the elastic force toward the upper left, so that the strip-shaped slider 523 has a movement tendency to return to the initial state position. After the shell 31 is completely installed in the main body, the card slot 33 on the shell 31 can accommodate the clamping protrusion 511 on the rotating block part 51 and provide a clearance space, so that the obstruction of the shell 31 to the rotating block part 51 is eliminated, and then the strip-shaped slider 523 is prompted to reset under the action of the elastic force, so as to drive the rotating block part 51 to rotate downward in the clockwise direction, and the clamping protrusion 511 is reset to its initial state position. Figures 1 to 3 and Figure 8 The position and arrangement of the clamping protrusion 511 described in the figure.

[0067] The shaft block 526 is matched with the end plate of the base 521 through a threaded structure, so that the length of the shaft block 526 extending into the groove of the base 521 can be adjusted. At the same time, by adjusting the length of the shaft block 526 extending into the groove of the base 521, the initial compression state of the first spring 524 and the initial compression state of the second spring 525 in the initial state can be adjusted and controlled. By adjusting the initial compression state of the two springs, the initial elastic force on both ends of the strip slider 523 can be basically balanced, so that the strip slider 523 can basically remain in the middle position in the length direction of the groove on the base 521. By giving the first spring 524 and the second spring 525 a certain initial stretching elastic force, the rotating block part 51 needs to overcome a certain resistance when it rotates under the action of the housing 31. Therefore, after the filter assembly 30 is installed in the main body of the connector 20, the initial stretching elastic force of the spring acting on the strip-shaped slider 523 can stably support the filter assembly 30 through the clamping protrusion 511 on the rotating block portion 51, which helps to prevent the filter assembly 30 from sliding downward relative to the main body due to its own gravity before it is firmly fixed in the connector 20 by the cover plate 25, thereby facilitating the installation of the filter assembly 30, facilitating the smooth progress of the operation and promoting the improvement of the operation efficiency. In order to better achieve the above-mentioned purpose, a plurality of clamping block assemblies 50 (see FIG. 2 ) can be set on the relevant assembly block 40 corresponding to the position of each strip-shaped notch 231. Figure 1 , two clamping block assemblies 50 are provided on each assembly block 40 ), so that the support of the clamping block assembly 50 on the filter assembly 30 will be more stable and reliable.

[0068] like Figure 1 , Figures 4 to 6 As shown, in addition to configuring the assembly block 40 and the block assembly 50 at the upper and lower ends of the flange 23, the assembly block 40 and the block assembly 50 may also be set at the middle position of the flange 23 to achieve the purpose of stably and securely supporting the filter assembly 30 through a plurality of the block assemblies 50, thereby improving the efficiency of the installation operation and reducing the difficulty of the operation.

[0069] The vertical extension length of the strip notch 231 should be able to provide sufficient clearance space for the rotating block portion 51 to rotate upward and downward relative to the assembly block 40 .

[0070] The clamping protrusion 511 is triangular in shape and its tip is facing one side of the flange 23 and can pass through the strip-shaped notch 231 at the corresponding position and extend into the inner side of the flange 23. Correspondingly, the clamping slot 33 is also triangular in shape and its tip is the inner end and its open end is the outer end. It is preferred that the outer end size (the size extending in the vertical direction) of the clamping slot 33 is larger than the size of the root of the clamping protrusion 511 (also the size extending in the vertical direction), and the height of the clamping protrusion 511 (the size in the radial direction or the size in the vertical direction) is greater than the root of the clamping protrusion 511. Figure 2 The dimension in the left-right direction as shown in FIG. 1 is greater than the depth of the slot 33 (as shown in FIG. Figure 2 Dimensions in left-right direction as shown).

[0071] like Figures 1 to 6 As shown, a flange arm 24 extending to the left or right is formed at the lower end of the flange 23, and a countersunk hole 242 with an axis in the vertical direction is formed on the flange arm 24. Correspondingly, a plug hole 251 with an axis in the vertical direction is formed on the cover plate 25, as shown in FIG. Figure 1 , Figure 3 At the same time, the locking assembly 60 matches the flange 23 one by one. The locking assembly 60 includes four limit blocks 61, an elastic member 62, a radial flange 63 and an insertion rod 64.

[0072] The outer diameter of the lower portion of the insertion rod 64 is consistent with the inner diameter of the insertion hole 251. The outer diameter of the radial flange 63 is larger than the inner diameter of the insertion hole 251. The inner diameter of the counterbore 242 is larger than the inner diameter of the insertion hole 251 and the axial extension depth of the counterbore 242 is smaller than the axial extension length of the elastic member 62 (in the figure, the elastic member 62 is a spring). One end of the elastic member 62 extends into the counterbore 242.

[0073] The insertion rods 64 are distributed along the vertical direction and are relatively arranged on the outer side of the flange 23 .

[0074] The radial flange 63 is formed at the lower part of the insertion rod 64 so that the lower end of the insertion rod 64 is inserted into the insertion hole 251. The elastic member 62 is sleeved on the insertion rod 64 so that the upper end of the elastic member 62 contacts the inner bottom surface of the counterbore 242 on the edge arm 24, and the lower end contacts the upper end surface of the radial flange 63.

[0075] The limit blocks 61 are fixedly distributed at the upper and lower ends of the insertion rod 64 and are matched one by one with the rotating block parts 51 provided on each of the assembly blocks 40. After the cover plate 25 is fixed to the lower end of the main body, the cover plate 25 can push the insertion rod 64 to move upward, so that the elastic member 62 is compressed and deformed, and at the same time, each of the limit blocks 61 moves upward and can contact the corresponding matching rotating block part 51, which can prevent the rotating block part 51 from rotating downward. Figure 2 , Figure 3 shown.

[0076] like Figures 4 to 6 As shown, during the disassembly operation, after the cover plate 25 is removed from the main body, the elastic member 62 can stretch and deform to push the corresponding insertion rod 64 downward, causing the limit blocks 61 on the insertion rod 64 to move downward a certain amount relative to their corresponding matching rotating block parts 51 to release the rotating block parts 51, so that the rotating block parts 51 can resume the state of being able to rotate downward. At this time, the filter assembly 30 can be pulled downward to be removed from the connecting member 20 or from the main body.

[0077] By providing the locking assembly 60, after the filter assembly 30 is installed on the connecting member 20, the stability and firmness of the connection relationship between the filter assembly 30 and the main body can be ensured, and the adverse factors such as vibration of the ventilation duct 10 caused during the operation of the air treatment device can be simulated, and the adverse effects on the stability, reliability and other assembly quality requirements of the assembly relationship between the filter assembly 30 and the main body can be simulated, so as to ensure the stable and efficient operation of the air treatment device and the air treatment effect.

[0078] In actual implementation, an annular flange can be provided on the edge arm 24 and the annular flange can correspond to the lower part of the position where the counterbore 242 is located. In this case, the inner cavity of the annular flange can replace the counterbore 242. Correspondingly, a nut is mounted on the insertion rod 64 and the radial flange 63 can be inserted into the nut. The nut can establish a fixed connection relationship with the annular flange, so that the insertion rod 64 is fixedly connected to the edge arm 24 or the main body. In the process of gradually increasing the thread matching length between the nut and the annular flange by screwing the nut, the nut can push the radial flange 63 upward, so that the insertion rod 64 moves upward and the elastic member 62 is compressed and deformed. Finally, the limit block 61 on the insertion rod 64 can be pushed to the bottom of the corresponding rotating block part 51 to prevent the rotating block part 51 from rotating downward. The cover plate 25 may be formed with a recessed groove structure or a through hole structure that can make way for the nut (the insertion hole 251 may be used as a through hole structure that can make way for the nut).

[0079] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. The present invention can be improved in many aspects without violating the overall concept, and those familiar with the technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An air treatment device for an operating room ventilation system, comprising a ventilation duct (10) and a filter assembly (30); characterized in that: It also includes a connecting piece (20) fixed on the ventilation duct (10); the connecting piece (20) includes a U-shaped main body and a cover plate (25); A long slot hole is provided on the bottom wall of the ventilation duct (10); after the main body is inserted into the ventilation duct (10) through the long slot hole and fixedly connected to the ventilation duct (10) as a whole, a sealing matching relationship can be established between the top plate (21) of the main body and the inner top surface of the ventilation duct (10), and between the front and rear end plates of the main body and the front and rear inner wall surfaces of the ventilation duct (10); The lower end of the main body extends to the lower end of the long slot hole and is fixedly connected to the cover plate (25); The cover plate (25) can be fixedly connected to the bottom wall of the ventilation duct (10) by means of bolts; Left and right opposite flanges (23) are respectively provided on the inner wall surface of the front end plate of the main body and the inner wall surface of the rear end plate of the main body; the flanges (23) are distributed in the vertical direction and vertically extend through the inner wall surface of the front end plate and / or the inner wall surface of the rear end plate; The filter assembly (30) can be inserted into the main body from bottom to top, and the left side and right side of the outer shell (31) of the filter assembly (30) can be clamped between the left and right opposite flanges (23); a sealing strip is provided between the opposite surfaces of the outer shell (31) and the flange (23); It also includes at least four pairs of assembly blocks (40) and a clamping block assembly (50) configured on each assembly block (40); the clamping block assembly (50) includes a rotating block portion (51) and a control portion (52); Strip-shaped notches (231) are formed at the upper and lower parts of the flange (23) respectively, and the strip-shaped notches (231) are distributed in the vertical direction; and slots (33) are formed on the left and right side surfaces of the housing (31) at positions close to the front and rear edges of the side surfaces respectively; The assembly blocks (40) are respectively fixed on the inner wall surfaces of the front end plate and the rear end plate of the main body and are relatively arranged on the outer side of the flange (23) and correspond one to one with the strip-shaped notches (231); The rotating block portion (51) is pivotally matched with the assembly block (40) so that the rotating block portion (51) can rotate relative to the assembly block (40) in a vertical plane extending in the left-right direction; the rotating block portion (51) is provided with a latching protrusion (511) that can match the latching slot (33); the latching protrusion (511) can pass through the strip-shaped notch (231) arranged at the corresponding position toward the left or can pass through the strip-shaped notch (231) arranged at the corresponding position toward the right, and respectively penetrate into the inner side of the flange (23); after the filter assembly (30) is installed in the main body, the latching protrusion (511) can be latched into the latching slot (33); The control part (52) is fixed on the assembly block (40) and matches the body of the rotating block part (51); the control part (52) can exert an elastic force on the body of the rotating block part (51), so that after the rotating block part (51) rotates, the elastic force can be used to cause the latching protrusion (511) on the rotating block part (51) to return to an initial position; A gear surface (512) is formed on the body of the rotating block portion (51); the control portion (52) comprises a base (521), a strip-shaped sliding block (523) and a pair of springs; The strip-shaped slider (523) matches the linear slide rail structure provided on the base (521), so that the strip-shaped slider (523) can move back and forth relative to the base (521) along the length direction of the base (521); A rack body (5231) capable of meshing with the gear surface (512) is formed on the strip-shaped slider (523), so that when the rotating block (51) rotates, the strip-shaped slider (523) can be urged to move relative to the base (521); The two springs are arranged on the base (521) in a relative manner and match the end of the strip-shaped slider (523); when the strip-shaped slider (523) moves relative to the base (521), one of the two springs can be selectively caused to undergo compression deformation, thereby exerting an elastic force on the strip-shaped slider (523).

2. The air handling device for an operating room ventilation system according to claim 1, characterized in that: An edge arm (24) extending toward the left or right side is formed at the lower end of the flange (23), and a threaded through hole (241) with an axis along the vertical direction is formed on the edge arm (24); a sink groove (12) is formed on the bottom wall of the ventilation duct (10) at a lower end of the long slot hole, and threaded sink holes with an axis along the vertical direction are distributed on the inner bottom surface of the sink groove (12); The cover plate (25) is fixedly connected to the threaded through hole (241) on the edge arm (24) and to the threaded countersunk hole on the inner bottom surface of the countersunk groove (12) by bolts, so that the cover plate (25) is fixed to the lower end of the main body and to the bottom wall of the ventilation duct (10).

3. The air handling device for an operating room ventilation system according to claim 1, characterized in that: An edge arm (24) extending toward the left or right side is formed at the lower end of the flange (23), and a countersunk hole (242) with an axis in a vertical direction is formed on the edge arm (24); and an insertion hole (251) with an axis in a vertical direction is formed on the cover plate (25); It also includes a plurality of locking assemblies (60) that match the flanges (23) in a one-to-one correspondence; the locking assemblies (60) include a plurality of limit blocks (61), elastic members (62), radial flanges (63) and insertion rods (64); the outer diameter of the radial flanges (63) is greater than the inner diameter of the insertion hole (251); The insertion rods (64) are distributed along the vertical direction and relatively arranged on the outside of the flange (23); A radial flange (63) is formed at the lower portion of the insertion rod (64) so ​​that the lower end of the insertion rod (64) is inserted into the insertion hole (251); the elastic member (62) is sleeved on the insertion rod (64) so ​​that the upper end of the elastic member (62) contacts the inner bottom surface of the countersunk hole (242) and the lower end contacts the upper end surface of the radial flange (63); The limit blocks (61) are fixedly distributed at the upper end and the lower end of the insertion rod (64) and are matched one by one with the rotating block parts (51) provided on each assembly block (40); after the cover plate (25) is fixed to the lower end of the main body, it can push the insertion rod (64) to move upward, so that the elastic member (62) is compressed and deformed, and at the same time, each limit block (61) moves upward to contact with the corresponding matching rotating block part (51), which can prevent the rotating block part (51) from rotating downward.

4. The air handling device for an operating room ventilation system according to claim 3, characterized in that: The elastic member (62) is a spring member or a spring-shaped sleeve member.

5. The air handling device for an operating room ventilation system according to claim 1, characterized in that: A plurality of clamping block assemblies (50) are matched on each assembly block (40), and the clamping block assemblies (50) arranged on the same assembly block (40) are arranged alternately in a vertical direction; The number of the card slots (33) provided on the housing (31) is consistent with the number of the card block assemblies (50), and the rotating block parts (51) of each card block assembly (50) are matched with each card slot (33) in a one-to-one correspondence, so that the card protrusions (511) on the rotating block parts (51) can be respectively inserted into the corresponding matching card slots (33).

6. The air handling device for an operating room ventilation system according to claim 1, characterized in that: The latching protrusion (511) is triangular in shape, with the tip of the latching protrusion (511) facing one side of the flange (23) and being able to pass through the strip-shaped notch (231) at the corresponding position and extend into the inner side of the flange (23); correspondingly, the latching groove (33) is also triangular in shape, with the tip of the latching groove (33) being the inner end.

7. The air handling device for an operating room ventilation system according to claim 6, characterized in that: The size of the outer end of the card slot (33) is larger than the size of the root of the card protrusion (511); the height of the card protrusion (511) is larger than the depth of the card slot (33).

Images