Breathing mask performance detection device

Abstract

The invention relates to the technical field of mask detection, in particular to a breathing mask performance detection device which comprises a sealing box and a detection instrument on the right side of the sealing box, and a detection unit used for detecting the sealing performance of a breathing mask is arranged in the sealing box. According to the invention, the pressure resistance of the arc mask can be detected while the sealing performance of the arc mask is detected, and the two detections complement each other, so that more comprehensive quality evaluation can be provided, data better fitting reality can be obtained, and the tightness of the breathing mask worn on a human head model can be flexibly adjusted for the sealing performance detection, so that the detection accuracy is improved. Therefore, wearing habits of different users are simulated more accurately, and the reliability and accuracy of the detection result are further improved. By means of the pressing assembly, the distribution condition of pressing force borne by the breathing mask can be changed, and the direction of the pressing force borne by the breathing mask can also be changed.

Description

Technical Field

[0001] The invention relates to the technical field of mask detection, in particular to a breathing mask performance detection device. Background Art

[0002] A breathing mask is a protective device used to protect the wearer's respiratory system. It is widely used in many fields such as medical, industrial, firefighting, and military. Its main function is to filter harmful substances in the air (such as dust, chemical gases, viruses, and bacteria, etc.), or to provide pure oxygen and assist breathing. The performance testing of breathing masks is very important. Good sealing performance can effectively prevent harmful substances from the outside from entering the wearer's respiratory tract. Good pressure resistance can ensure that the mask will not be easily deformed or fail due to changes in external pressure, thereby continuously providing effective protection.

[0003] However, the following problems exist in the performance testing of respiratory masks: (1) Only testing the sealing performance of the respiratory mask while ignoring the pressure resistance test will result in low representativeness and authenticity of the test data. At the same time, due to different wearing habits of different users, the wearing tightness between the respiratory mask and the head is different, and the accuracy of the sealing test results implemented without controlling the wearing tightness also needs to be improved.

[0004] (2) When conducting the compression resistance test, the compression resistance test results obtained by applying a fixed direction and a fixed amount of pressure to a fixed point on the breathing mask are relatively simple. The fixed testing method will lead to certain deviations in the test results, and the accuracy of the test results needs to be improved.

[0005] Therefore, in order to solve the problems existing in the performance testing process of a breathing mask, the present invention provides a breathing mask performance testing device. Summary of the invention

[0006] The present invention provides a breathing mask performance detection device, comprising a sealing box and a detection instrument on the right side thereof, wherein a detection unit for detecting the sealing performance of the breathing mask is arranged inside the sealing box; the detection unit comprises a mounting platform mounted on the right side wall of the sealing box, a human head model is mounted on the upper end of the mounting platform, the breathing mask is sleeved on the human head model through two upper and lower elastic bundles, the elastic bundles are composed of two sections of elastic bands bonded by Velcro; a pressing component for pressing the breathing mask is arranged on the left side of the mounting platform, the pressing component comprises an arc-shaped bottom plate, a T-shaped plate is arranged on the upper end of the arc-shaped bottom plate, a vertical plate is mounted on the upper end of the T-shaped plate, and an arc-shaped bottom plate is mounted on the upper end of the arc-shaped bottom plate to slide with the upper end of the vertical plate A cylinder is arranged on the right side of the groove plate and the vertical plate, a pressure block is arranged on the right end of the pushing end of the cylinder, a moving component for driving the T-plate to move along the circumferential direction of the arc bottom plate is arranged on the arc bottom plate, an adjusting component for adjusting the height of the cylinder and a supporting member for supporting the cylinder are arranged on the vertical plate; a vertical arc frame installed in a sealed box is arranged together with the outer annular surface of the arc bottom plate and the arc groove plate, vertical arc plates distributed along the circumferential direction of the arc bottom plate and the arc groove plate are arranged on the front and rear sides of the vertical arc frame, a connecting member for connecting the arc bottom plate and the arc groove plate is arranged between the vertical arc frame and the front and rear vertical arc plates, and a control component for controlling the pressure component to rotate along the circumferential direction of the vertical arc frame is arranged on the outer side of the vertical arc frame.

[0007] In one possible implementation, the central axis of the vertical arc frame is perpendicular to the central axis of the arc base plate, the center of the arc base plate is located on the vertical central axis of the human head model, and the center of the vertical arc frame is located at the midpoint of the vertical central axis of the human head model. The moving component includes an arc groove opened on the arc base plate and slidably matched with the vertical section of the T-plate, an arc guide rail is installed inside the arc groove, and an arc electric slider fixedly connected to the vertical section of the T-plate is slidably installed on the arc guide rail, and a scale groove 1 is opened at the upper end of the arc base plate, which is evenly arranged circumferentially and located outside the arc groove.

[0008] In one possible implementation, the adjustment assembly includes an adjustment groove opened on the right side of the vertical plate, the cylinder is installed on the right end of the mounting block that slides up and down with the adjustment groove, a threaded rod threadedly connected to the mounting block is rotatably installed between the upper and lower inner walls of the adjustment groove, the upper end of the threaded rod rotates and passes through the upper end of the vertical plate, and a second scale groove evenly arranged up and down is opened on the front side of the vertical plate.

[0009] In one possible implementation, the support member includes a connecting telescopic rod hinged on both the upper and lower sides of the cylinder fixed section, the other end of the connecting telescopic rod is inclined in a direction away from the cylinder axis and hinged on the right side of the vertical plate, and multiple triangular structures are formed between the connecting telescopic rod and the cylinder and the vertical plate.

[0010] In a possible implementation manner, a sliding sleeve is slidably mounted on the fixed section of the connecting telescopic rod located below. An elastic telescopic column is hinged to the lower end of the sliding sleeve. A positioning rod that is slidably connected to the horizontal section of the T-shaped plate is mounted at the lower end of the telescopic section of the elastic telescopic column. The lower end of the positioning rod is in a frustum shape. Positioning holes that are circumferentially and uniformly arranged and are located inside the arc-shaped groove are formed in the upper end of the arc-shaped bottom plate. The positioning rod is inserted and matched with the corresponding positioning hole.

[0011] In a possible implementation manner, a C-shaped frame is mounted between the middle of the outer ring surface of the arc-shaped bottom plate and the arc-shaped groove plate. An arc-shaped through groove that is slidably matched with the C-shaped frame is formed in the vertical arc-shaped frame. Sliding blocks are mounted at both the front and rear ends of the arc-shaped bottom plate and the arc-shaped groove plate. Arc-shaped sliding grooves that are slidably matched with the sliding blocks are formed in the vertical arc-shaped plate.

[0012] In a possible implementation manner, the connecting member includes a connecting column mounted at the left end of the sliding block and passing through the corresponding arc-shaped sliding groove. A side arc-shaped plate that is attached to the outer ring surface of the corresponding vertical arc-shaped plate is mounted between two vertically opposite connecting columns. A horizontal arc-shaped plate that is fixedly connected to the C-shaped frame is mounted between the middle parts of the front and rear two side arc-shaped plates. The arc-shaped bottom plate, the arc-shaped groove plate, the arc-shaped groove, the arc-shaped guide rail, and the horizontal arc-shaped plate have the same curvature. The vertical arc-shaped frame, the vertical arc-shaped plate, the side arc-shaped plate, the arc-shaped through groove, and the arc-shaped sliding groove have the same curvature.

[0013] In a possible implementation manner, the control assembly includes a first connecting rod hinged to the middle of the outer ring surface of the horizontal arc-shaped plate. An auxiliary block located below the horizontal arc-shaped plate is slidably mounted in the arc-shaped through groove. A second connecting rod is hinged to the left end of the auxiliary block. The second connecting rod is a telescopic structure. The other ends of the first connecting rod and the second connecting rod are jointly hinged to the moving frame. The left end of the moving frame is connected to the pushing section of the electric push rod. The electric push rod is mounted on the sealed box. A moving rod that is slidably connected to the bottom wall of the sealed box is mounted at the lower end of the moving frame.

[0014] In a possible implementation manner, two fixing blocks that are distributed before and after the arc-shaped through groove are mounted on the upper end of the horizontal arc-shaped plate. An installation round hole is formed in the right end of the fixing block. A limiting column is slidably mounted in the installation round hole. A telescopic spring is connected between the limiting column and the side wall of the installation round hole. Limiting holes that are circumferentially and uniformly arranged are formed at the corresponding positions of the outer side of the vertical arc-shaped frame. The limiting column is inserted and matched with the corresponding limiting hole. Scale grooves three that are circumferentially and uniformly arranged are formed on the front side of the vertical arc-shaped frame.

[0015] In a possible implementation manner, a threaded sleeve that is threadedly connected to the right end of the pushing section of the air cylinder is mounted at the left end of the pressing block.

[0016] The beneficial effects of the present invention are as follows: 1. The present invention can perform a compression performance test on the arc-shaped mask while performing a sealing performance test on it. The two tests complement each other, which can provide a more comprehensive quality evaluation and obtain data that is more in line with reality. At the same time, according to the sealing performance test, the tightness of the breathing mask worn on the human head model can be flexibly adjusted, so as to more accurately simulate the wearing habits of different users and further improve the reliability and accuracy of the test results.

[0017] 2. The pressure component used in the present invention can not only change the distribution of the pressure applied to the breathing mask, but also change the direction of the pressure applied to the breathing mask, thereby simulating the effects of various forces faced by the breathing mask under different usage conditions, enriching the test results, and contributing to a more comprehensive evaluation of the pressure resistance and sealing performance of the breathing mask.

[0018] 3. The detection unit used in the present invention can apply pressure in different directions to different parts of the respiratory mask by rotating the pressure component, simulating the pressure from different directions that the respiratory mask may be subjected to in actual use, which is conducive to further understanding the ability of the respiratory mask to withstand pressure in various directions and obtaining more comprehensive, true and accurate detection results.

[0019] 4. The present invention forms a plurality of stable triangular structures through the cooperation between the supporting parts, the connecting parts and the control components, which can not only ensure the stability of the pressing component during the pressing process, but also help to improve the structural stability of the pressing component during the movement, reduce the shaking or deviation that may occur during the pressing and moving process, enhance the pressing accuracy, ensure that the whole system performs the detection operation in a balanced and stable manner, and thus improve the detection quality and efficiency.

[0020] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical scheme, and the beneficial effects brought about by the technical features of these technical schemes, other technical problems that can be solved by a respiratory mask performance detection device provided by an embodiment of the present application, other technical features included in the technical scheme, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention.

[0023] Figure 2 Schematic three-dimensional structure diagram of the human head model and the elastic beam member of the present invention.

[0024] Figure 3 Schematic three-dimensional structure diagram of the detection unit of the present invention.

[0025] Figure 4 Schematic three-dimensional structure diagram of the connecting member of the present invention.

[0026] Figure 5 is Figure 4 Enlarged schematic diagram of area A in

[0027] Figure 6 Schematic three-dimensional structure diagram of the pressing component and the connecting member of the present invention.

[0028] Figure 7 Schematic three-dimensional structure diagram of the pressing component and the adjusting component of the present invention.

[0029] In the figure: 1. Sealing box; 11. Detection unit; 111. Installation table; 112. Human head model; 113. Elastic band; 12. Arc-shaped bottom plate; 121. T-shaped plate; 122. Vertical plate; 123. Arc-shaped groove plate; 124. Cylinder; 125. Threaded sleeve; 126. Pressing block; 127. Arc-shaped groove; 128. Arc-shaped electric slider; 131. Adjusting groove; 132. Installation block; 133. Threaded rod; 134. Connecting telescopic rod; 135. Sliding sleeve; 136. Elastic telescopic column; 137. Positioning rod; 138. Positioning hole; 141. Vertical arc-shaped frame; 142. Vertical arc-shaped plate; 143. C-shaped frame; 144. Arc-shaped through groove; 145. Sliding block; 146. Arc-shaped sliding groove; 147. Connecting column; 148. Side arc-shaped plate; 149. Horizontal arc-shaped plate; 151. Link one; 152. Auxiliary block; 153. Link two; 154. Electric push rod; 155. Fixed block; 156. Limit column; 157. Telescopic spring; 158. Limit hole; 2. Detection instrument. Specific embodiments

[0030] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0031] Please refer to Figure 1A breathing mask performance detection device includes a sealing box 1 and a detection instrument 2 on the right side thereof. A detection unit 11 for detecting the sealing performance of the breathing mask is arranged inside the sealing box 1.

[0032] See also Figure 1 , Figure 2 and Figure 3 The detection unit 11 includes a mounting platform 111 installed on the right side wall of the sealed box 1, and a head model 112 is installed on the upper end of the mounting platform 111. The breathing mask is mounted on the head model 112 through two upper and lower elastic bundles to simulate the actual wearing situation. The elastic bundle is composed of two sections of elastic bands 113 bonded by Velcro, and the upper end of the elastic band 113 is provided with evenly arranged scale marks.

[0033] The front side of the sealed box 1 is provided with a switchable door. The sealed box 1 is made of high-strength, optical-grade transparent glass material, so that the test process is fully visualized; the human head model 112 is provided with a connection interface for connecting with the detection instrument 2, which is not shown in the figure. The detection instrument 2 is a prior art. The sealed box 1 with the door closed is in a completely sealed state. The detection instrument 2 can first inject a certain amount of air into the breathing mask from the human head model 112 to make its internal pressure higher than the external environment pressure until it reaches a predetermined test pressure level, which is used as an initial reference standard. The pipe connected to the other end of the breathing mask needs to be blocked in advance. The subsequent detection instrument 2 can monitor the pressure changes in the breathing mask and judge the sealing performance and pressure resistance of the breathing mask by whether there is a leak.

[0034] When the respiratory mask is worn on the human head model 112, the tightness of the elastic bundle can be flexibly adjusted, that is, the position of the Velcro bonding of the two sections of the elastic band 113 can be changed. The scale mark can provide a clear reference point for each adjustment of the position of the elastic band 113, ensuring that each test can be adjusted according to the same standard, so as to better simulate the wearing habits of different users, thereby ensuring that the test results can reflect the performance of the respiratory mask in actual conditions.

[0035] See also Figure 1 , Figure 3 , Figure 6 and Figure 7The left side of the mounting platform 111 is provided with a pressing assembly for pressing the breathing mask, and the pressing assembly includes an arc-shaped bottom plate 12, a T-shaped plate 121 is provided at the upper end of the arc-shaped bottom plate 12, a vertical plate 122 is installed at the upper end of the T-shaped plate 121, an arc-shaped groove plate 123 slidingly matched with the upper end of the vertical plate 122 is installed at the upper end of the arc-shaped bottom plate 12, a cylinder 124 is provided on the right side of the vertical plate 122, a threaded sleeve 125 is threadedly connected to the right end of the pushing section of the cylinder 124, and a pressing block 12 is installed at the right end of the threaded sleeve 125 6. A moving assembly for driving the T-shaped plate 121 to move circumferentially along the arc-shaped bottom plate 12 is provided on the arc-shaped bottom plate 12. The moving assembly includes an arc-shaped groove 127 which is opened on the arc-shaped bottom plate 12 and slidably cooperates with the vertical section of the T-shaped plate 121. An arc-shaped guide rail is installed inside the arc-shaped groove 127. An arc-shaped electric slider 128 which is fixedly connected to the vertical section of the T-shaped plate 121 is slidably installed on the arc-shaped guide rail. A scale groove 1 which is evenly arranged circumferentially and located outside the arc-shaped groove 127 is opened on the upper end of the arc-shaped bottom plate 12.

[0036] See also Figure 1 , Figure 3 , Figure 6 and Figure 7 The vertical plate 122 is provided with an adjustment component for adjusting the height of the cylinder 124 and a support for supporting the cylinder 124. The adjustment component includes an adjustment groove 131 opened on the right side of the vertical plate 122. The cylinder 124 is installed on the right end of the mounting block 132 that slides up and down with the adjustment groove 131. A threaded rod 133 threadedly connected to the mounting block 132 is rotatably installed between the upper and lower inner walls of the adjustment groove 131. The upper end of the threaded rod 133 rotates through the upper end of the vertical plate 122. A second scale groove evenly arranged up and down is opened on the front side of the vertical plate 122. The support includes a connecting telescopic rod 134 hinged on both the upper and lower sides of the fixed section of the cylinder 124, and another connecting telescopic rod 134. One end is inclined in the direction away from the axis of the cylinder 124 and is hinged to the right side of the vertical plate 122. A plurality of triangular structures are formed between the telescopic rod 134 and the cylinder 124 and the vertical plate 122. A sliding sleeve 135 is slidably installed on the fixed section of the telescopic rod 134 located at the bottom. An elastic telescopic column 136 is hinged at the lower end of the sliding sleeve 135. A positioning rod 137 that is slidably connected to the horizontal section of the T-plate 121 is installed at the lower end of the telescopic section of the elastic telescopic column 136. The lower end of the positioning rod 137 is truncated cone-shaped. The upper end of the arc bottom plate 12 is provided with positioning holes 138 that are evenly arranged circumferentially and located on the inner side of the arc groove 127. The positioning rod 137 is plugged into the corresponding positioning holes 138.

[0037] During specific use, the cylinder 124 can push the pressure block 126 to press the breathing mask to perform a pressure resistance test on the breathing mask. The pressure applied to the breathing mask by the pressure block 126 can be adjusted by the cylinder 124 to gradually increase the pressure on the breathing mask. At the same time, the detection instrument 2 can synchronously monitor whether there is a leak in the breathing mask to determine under what pressure the breathing mask will be deformed to the point of rupture or loosening. In addition, the threaded sleeve 125 can be rotated to remove the pressure block 126 from the pushing section of the cylinder 124, and the pressure block 126 with different end pressure areas can be replaced on the pushing section of the cylinder 124 to change the contact area between the pressure block 126 and the breathing mask, thereby changing the distribution of the pressure on the breathing mask.

[0038] In addition, the direction of the horizontal pressure applied to the breathing mask can be changed to simulate the possible force applied to the breathing mask in actual use. During this process, the arc-shaped electric slider 128 can drive the T-plate 121, the vertical plate 122, the cylinder 124 and the pressure block 126 to move around the breathing mask to different positions along the arc-shaped guide rail (horizontally move around the vertical axis), and the arc-shaped groove plate 123 can support and guide the movement of the vertical plate 122. The upper and lower connecting telescopic rods 134 and the elastic telescopic column 136 move synchronously with the vertical plate 122 and the T-plate 121. When the T-plate 121 moves After moving to the appropriate position, the positioning rod 137 at the lower end of the elastic telescopic column 136 can be inserted into the corresponding positioning hole 138 under the action of the rebound force, so as to locate the moving position of the T-plate 121. When the T-plate 121 needs to move again, the positioning rod 137 can use its truncated cone-shaped lower end to smoothly disengage from the positioning hole 138. It should be noted that the arc-shaped electric slider 128 moves along the arc-shaped guide rail at the same speed for the same time each time, so as to ensure that the arc-shaped electric slider 128 moves the same distance each time, and the scale groove 1 can provide a reference positioning point for each movement of the T-plate 121.

[0039] Meanwhile, pressure detection can also be performed on parts of the breathing mask at different heights. Specifically, the installation block 132 can be moved up and down along the adjustment groove 131 by rotating the threaded rod 133. The cylinder 124 drives the pressing block 126 to move synchronously. The second scale groove can provide a reference positioning point for each movement of the installation block 132. The upper and lower connecting telescopic rods 134 rotate and expand and contract respectively as the cylinder 124 moves. The triangular structure formed by the connecting telescopic rod 134, the cylinder 124, and the vertical plate 122 can support the cylinder 124 to stably complete the pressing action, ensuring that the breathing mask receives a stable pressing force. When the lower connecting telescopic rod 134 rotates, the sliding sleeve 135 slides correspondingly along its fixed section, and the sliding sleeve 135 can rotate synchronously around the hinge point between itself and the elastic telescopic column 136. The elastic telescopic column 136 expands and contracts synchronously, but the positioning rod 137 at the lower end of the telescopic end of the elastic telescopic column 136 always slides配合 with the horizontal section of the T-shaped plate 121. The cooperation between the sliding sleeve 135, the elastic telescopic column 136, the positioning rod 137, and the T-shaped plate 121 is beneficial to improving the connection stability between the support member and the moving component.

[0040] Please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 6 ,An upright arc-shaped frame 141 installed in the sealed box 1 is jointly arranged on the outer ring surface of the arc-shaped bottom plate 12 and the arc-shaped groove plate 123. The central axis of the upright arc-shaped frame 141 is perpendicular to the central axis of the arc-shaped bottom plate 12. The center of the arc-shaped bottom plate 12 is located on the vertical central axis of the human head model 112. The center of the upright arc-shaped frame 141 is located at the midpoint of the vertical central axis of the human head model 112. Upright arc-shaped plates 142 distributed circumferentially along the arc-shaped bottom plate 12 and the arc-shaped groove plate 123 are installed on both the front and back sides of the upright arc-shaped frame 141. A U-shaped frame 143 is installed between the middle parts of the outer ring surfaces of the arc-shaped bottom plate 12 and the arc-shaped groove plate 123. An arc-shaped through groove 144 that slides配合 with the U-shaped frame 143 is provided on the upright arc-shaped frame 141. Sliding blocks 145 are installed at both the front and back ends of the arc-shaped bottom plate 12 and the arc-shaped groove plate 123. Arc-shaped sliding grooves 146 that slide配合 with the sliding blocks 145 are provided on the upright arc-shaped plates 142.

[0041] Please refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 6A connecting piece for connecting the arc bottom plate 12 and the arc slot plate 123 is arranged between the vertical arc frame 141 and the front and rear vertical arc plates 142. The connecting piece includes a connecting column 147 installed at the left end of the sliding block 145 and penetrating the corresponding arc slot 146. A side arc plate 148 that fits the outer ring surface of the corresponding vertical arc plate 142 is installed between the two connecting columns 147 facing each other up and down. A horizontal arc plate 149 fixedly connected to the arc frame 143 is installed between the middle parts of the front and rear side arc plates 148. The arc bottom plate 12 has the same curvature as the arc slot plate 123, the arc groove 127, the arc guide rail, and the horizontal arc plate 149. The vertical arc frame 141 has the same curvature as the vertical arc plate 142, the side arc plate 148, the arc through slot 144, and the arc slot 146.

[0042] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The outer side of the vertical arc frame 141 is provided with a control component for controlling the pressing component to rotate along the circumferential direction of the vertical arc frame 141. The control component includes a connecting rod 151 hinged at the middle part of the outer ring surface of the horizontal arc plate 149. An auxiliary block 152 located below the horizontal arc plate 149 is slidably installed in the arc groove 144. The left end of the auxiliary block 152 is hinged with a connecting rod 2 153. The connecting rod 2 153 is a telescopic structure. The other ends of the connecting rod 151 and the connecting rod 2 153 are hinged on the moving frame together. The left end of the moving frame is connected to the pushing section of the electric push rod 154. The electric push rod 154 is installed on the sealing box 1. The lower end of the moving frame is equipped with a connecting rod 151 connected to the sealing box 1. A moving rod is connected to the bottom wall of the box 1 for sliding left and right, and two fixed blocks 155 distributed front and back about the arc-shaped through slot 144 are installed on the upper end of the horizontal arc plate 149. A mounting circular hole is opened on the right end of the fixed block 155, and a limiting column 156 is slidably installed in the mounting circular hole. The right end of the limiting column 156 is chamfered, and a telescopic spring 157 is connected between the limiting column 156 and the side wall of the mounting circular hole. The outer side of the vertical arc-shaped frame 141 corresponding to the limiting column 156 is provided with limiting holes 158 evenly arranged in the circumferential direction, and the limiting columns 156 are plugged into the corresponding limiting holes 158, and the front side of the vertical arc-shaped frame 141 is provided with three scale grooves evenly arranged in the circumferential direction.

[0043] In order to obtain a more comprehensive, true and effective test result, different directions of resistance pressure can be further applied to different parts of the breathing mask. Specifically, the electric push rod 154 can push the movable frame to move left and right, and the movable rod moves synchronously along the bottom wall of the sealing box 1. When the movable frame moves, the connecting rod 151 and the connecting rod 2 153 move synchronously. When the movable frame moves to the left, the connecting rod 151 and the connecting rod 2 153 move synchronously towards each other. When the movable frame moves to the right, the connecting rod 151 and the connecting rod 2 153 move synchronously in the opposite direction. The first connecting rod 151 and the second connecting rod 153 can respectively drive the horizontal arc plate 149 and the auxiliary block 152 to move synchronously along the outer ring surface of the vertical arc frame 141, and the second connecting rod 153 will be synchronously extended and retracted accordingly. The pressing component rotates up and down synchronously with the horizontal arc plate 149 through the shaped frame 143, the sliding block 145, the connecting column 147 and the side arc plate 148. Under the cooperation of the shaped frame 143, the sliding block 145, the connecting column 147, the side arc plate 148 and the horizontal arc plate 149, the pressing component completes the vertical arc in a stable and reliable state. The connection between the arc frame 141 and the vertical arc plate 142, the arc groove 144 and the arc slide 146 can provide support and guidance for the movement of the arc frame 143 and the auxiliary block 152, the sliding block 145 and the connecting column 147, so as to increase the stability of the pressing component during the movement. In addition, the stable triangular structure formed by the connecting rod 151, the connecting rod 2 153 and the vertical arc frame 141 can further improve the stability of the horizontal arc plate 149 during the movement. The geometric center line is located at a position slightly below the vertical arc frame 141, so the pressing assembly can smoothly rotate up and down along the vertical arc frame 141, and the interference between the auxiliary block 152 and the bottom wall of the arc-shaped through groove 144 does not affect the continued movement of the connecting rod 151 and the horizontal arc plate 149. It should be noted that the speed and time of the electric push rod 154 pushing the moving frame can be controlled, and the speed and time of each movement of the moving frame are the same, thereby ensuring that the pressing assembly rotates at the same angle along the vertical arc frame 141 and the vertical arc plate 142 each time.

[0044] During the rotation of the horizontal arc plate 149, the front and rear fixed blocks 155 move synchronously. When the horizontal arc plate 149 rotates to a certain angle, the limit column 156 can move along the installation circular hole under the action of the rebound force of the telescopic spring 157 and insert into the corresponding limit hole 158. When the horizontal arc plate 149 moves again, it can push the limit column 156 to compress the telescopic spring 157 and reset it to the installation circular hole. The rotation position of the horizontal arc plate 149 and the pressing assembly can be positioned through the cooperation between the limit column 156 and the limit hole 158 to ensure that the pressing assembly rotates to a suitable and accurate angle. The scale groove three can provide a reference positioning point for the rotation of the horizontal arc plate 149. After the horizontal arc plate 149 stops rotating, the pressure resistance test of the pressing assembly on the breathing mask is completed according to the above operation.

[0045] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A breathing mask performance testing device, comprising a sealing box (1) and a testing instrument (2) on the right side thereof, characterized in that: The sealing box (1) is provided with a detection unit (11) for detecting the sealing performance of the breathing mask; The detection unit (11) comprises a mounting platform (111) mounted on the right side wall of the sealed box (1), a head model (112) being mounted on the upper end of the mounting platform (111), and a breathing mask being mounted on the head model (112) via two upper and lower elastic bundles, wherein the elastic bundles are composed of two sections of elastic bands (113) bonded to each other via Velcro; A pressing assembly for pressing the breathing mask is arranged on the left side of the mounting platform (111), the pressing assembly comprising an arc-shaped bottom plate (12), a T-shaped plate (121) is arranged on the upper end of the arc-shaped bottom plate (12), a vertical plate (122) is installed on the upper end of the T-shaped plate (121), an arc-shaped groove plate (123) slidably matched with the upper end of the vertical plate (122) is installed on the upper end of the arc-shaped bottom plate (12), a cylinder (124) is arranged on the right side of the vertical plate (122), a pressing block (126) is arranged on the right end of the pushing end of the cylinder (124), a moving assembly for driving the T-shaped plate (121) to move along the circumferential direction of the arc-shaped bottom plate (12) is arranged on the arc-shaped bottom plate (12), and an adjusting assembly for adjusting the height of the cylinder (124) and a supporting member for supporting the cylinder (124) are arranged on the vertical plate (122; The outer annular surfaces of the arc bottom plate (12) and the arc groove plate (123) are jointly provided with a vertical arc frame (141) installed in the sealing box (1); the front and rear sides of the vertical arc frame (141) are both provided with vertical arc plates (142) distributed along the circumference of the arc bottom plate (12) and the arc groove plate (123); a connecting piece for connecting the arc bottom plate (12) and the arc groove plate (123) is provided between the vertical arc frame (141) and the front and rear vertical arc plates (142); and a control component for controlling the rotation of the pressing component along the circumference of the vertical arc frame (141) is provided on the outer side of the vertical arc frame (141).

2. A breathing mask performance detection device according to claim 1, characterized in that: The central axis of the vertical arc frame (141) is perpendicular to the central axis of the arc bottom plate (12); the center of the arc bottom plate (12) is located on the vertical central axis of the human head model (112); the center of the vertical arc frame (141) is located at the midpoint of the vertical central axis of the human head model (112); the moving component comprises an arc groove (127) provided on the arc bottom plate (12) and slidably matched with the vertical section of the T-shaped plate (121); an arc guide rail is installed inside the arc groove (127); an arc electric slider (128) fixedly connected to the vertical section of the T-shaped plate (121) is slidably installed on the arc guide rail; and a scale groove (1) is provided at the upper end of the arc bottom plate (12) and is evenly arranged in the circumferential direction and is located outside the arc groove (127).

3. A breathing mask performance detection device according to claim 1, characterized in that: The adjustment component includes an adjustment groove (131) formed on the right side of the vertical plate (122). The cylinder (124) is installed at the right end of the mounting block (132) that is slidably engaged with the adjustment groove (131) up and down. A threaded rod (133) that is threadedly connected to the mounting block (132) is rotatably installed between the upper and lower inner walls of the adjustment groove (131). The upper end of the threaded rod (133) rotatably penetrates through the upper end of the vertical plate (122). A second scale groove is formed on the front side of the vertical plate (122) and is evenly arranged up and down.

4. A breathing mask performance detection device according to claim 2, characterized in that: The support member includes connecting telescopic rods (134) that are hinged to both the upper and lower sides of the fixed section of the cylinder (124). The other ends of the connecting telescopic rods (134) are inclined away from the axis of the cylinder (124) and are hinged to the right side of the vertical plate (122). Multiple triangular structures are formed among the connecting telescopic rods (134), the cylinder (124), and the vertical plate (122).

5. A breathing mask performance detection device according to claim 4, characterized in that: A sliding sleeve (135) is slidably installed on the fixed section of the lower connecting telescopic rod (134). An elastic telescopic column (136) is hinged to the lower end of the sliding sleeve (135). A positioning rod (137) that is slidably connected to the horizontal section of the T-shaped plate (121) up and down is installed at the lower end of the telescopic section of the elastic telescopic column (136). The lower end of the positioning rod (137) is frustum-shaped. Positioning holes (138) that are evenly arranged circumferentially and are located inside the arc-shaped groove (127) are formed on the upper end of the arc-shaped bottom plate (12). The positioning rod (137) is inserted and matched with the corresponding positioning hole (138).

6. A breathing mask performance detection device according to claim 2, characterized in that: An L-shaped frame (143) is installed between the middle of the outer ring surfaces of the arc-shaped bottom plate (12) and the arc-shaped groove plate (123). An arc-shaped through groove (144) that is slidably engaged with the L-shaped frame (143) is formed on the vertical arc-shaped frame (141). Sliding blocks (145) are installed at both the front and rear ends of the arc-shaped bottom plate (12) and the arc-shaped groove plate (123). An arc-shaped sliding groove (146) that is slidably engaged with the sliding block (145) is formed on the vertical arc-shaped plate (142).

7. A breathing mask performance detection device according to claim 6, characterized in that: The connecting member includes a connecting column (147) installed at the left end of the sliding block (145) and penetrating through the corresponding arc-shaped sliding groove (146). A side arc-shaped plate (148) that is attached to the outer ring surface of the corresponding vertical arc-shaped plate (142) is installed between two upper and lower opposite connecting columns (147). A horizontal arc-shaped plate (149) that is fixedly connected to the L-shaped frame (143) is installed between the middle parts of the front and rear two side arc-shaped plates (148). The arc-shaped bottom plate (12), the arc-shaped groove plate (123), the arc-shaped groove (127), the arc-shaped guide rail, and the horizontal arc-shaped plate (149) have the same curvature. The vertical arc-shaped frame (141), the vertical arc-shaped plate (142), the side arc-shaped plate (148), the arc-shaped through groove (144), and the arc-shaped sliding groove (146) have the same curvature.

8. A breathing mask performance detection device according to claim 7, characterized in that: The control assembly comprises a connecting rod 1 (151) hinged at the middle of the outer ring surface of the horizontal arc plate (149), an auxiliary block (152) located below the horizontal arc plate (149) is slidably installed in the arc groove (144), a connecting rod 2 (153) is hinged at the left end of the auxiliary block (152), and the connecting rod 2 (153) is a telescopic structure. The other ends of the connecting rod 1 (151) and the connecting rod 2 (153) are hinged on a moving frame, and the left end of the moving frame is connected to the pushing section of the electric push rod (154), and the electric push rod (154) is installed on the sealing box (1), and the lower end of the moving frame is installed with a moving rod that is slidably connected to the bottom wall of the sealing box (1) left and right.

9. A breathing mask performance detection device according to claim 7, characterized in that: Two fixing blocks (155) are installed at the upper end of the horizontal arc plate (149) and are distributed front and rear about the arc through slot (144). A mounting circular hole is provided at the right end of the fixing block (155). A limiting column (156) is slidably installed in the mounting circular hole. A telescopic spring (157) is connected between the limiting column (156) and the side wall of the mounting circular hole. Limiting holes (158) arranged evenly in the circumferential direction are provided at positions corresponding to the limiting columns (156) on the outer side of the vertical arc frame (141). The limiting columns (156) are plugged into and matched with the corresponding limiting holes (158). A third scale groove arranged evenly in the circumferential direction is provided on the front side of the vertical arc frame (141).

10. A breathing mask performance detection device according to claim 1, characterized in that: The left end of the pressing block (126) is provided with a threaded sleeve (125) threadedly connected to the right end of the pushing section of the cylinder (124).

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