Gas detection device for access control system

Abstract

The utility model belongs to the technical field of gas detection, and particularly relates to a gas detection device for an access control system, which comprises a detector body, the upper part of the right side wall of the inner side of the detector body is fixedly connected with a gas storage chamber, and the bottom of the inner side of the detector body is fixedly provided with a suction pump; an air outlet pipe on the upper side of the suction pump is fixedly connected with the air storage chamber, and the left end of the suction pump is fixedly connected with an air inlet pipe. Through the arrangement of the suction pump, the air inlet pipe and the like, air of access control accessories can be sucked for subsequent detection, large-particle impurities in the air can be filtered out under the action of the filter screen, the influence of the particle impurities and the like on subsequent detection components, a pump body and the like is avoided, and the detection efficiency is improved. And under the structures of a second motor, an impact ball, a first spring and the like, the filter screen can oscillate and shake, impurities attached to the filter screen are cleaned, and the circulation effect of the filter screen is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a gas detection device for an access control system. Background Art

[0002] The access control system is a security device used to control and manage entrances and exits, and the gas detection function of the access control system is usually used to monitor the gas composition in the indoor air, mainly including harmful gases such as carbon monoxide, smoke, flammable gases, etc.

[0003] The gas detection function in the access control system plays an important role in ensuring personnel safety, health and fire prevention. Through timely monitoring, alarm and control, the safety and comfort of the indoor environment can be effectively improved.

[0004] A gas detection device is disclosed in a utility model patent with patent authorization announcement number CN214895174U, including: a control box; a control board fixed in the control box; a sampling gas chamber fixed at the bottom of the control box; a gas sensor fixed in the sampling gas chamber; and a sampling pump fixed in the control box; the air inlet end of the sampling pump is connected to the gas source to be tested through an air inlet pipe, and the air outlet end of the sampling pump is connected to the sampling gas chamber through an exhaust pipe, and an exhaust hole is provided on the sampling gas chamber, and the gas sensor and the sampling pump are connected to the control board through wires.

[0005] However, the existing gas detection device for access control system also has certain shortcomings. First, although the existing gas detection device for access control system uses a suction pump, an air intake pipe and other structures to suck and input the air of the access control accessories, due to the presence of dust and other particulate impurities in the air, it is easy to affect the subsequent detection components, pump body, etc., and it is not convenient to detect the gas;

[0006] Secondly, the existing gas detection devices for access control systems mostly use straight-through flow pipes to discharge the detection gas. Due to the flow characteristics of the gas, subsequent air backflow will occur, resulting in inaccurate gas detection inside the gas storage chamber. Utility Model Content

[0007] The utility model aims to provide a gas detection device for an access control system, which solves the problem that the existing gas detection device for the access control system adopts a suction pump, an air inlet pipe and other structures to suck and input the air of the access control accessories, but due to the presence of particulate impurities such as dust in the air, it is easy to affect subsequent detection components, pump bodies, etc., making it inconvenient to detect the gas; and solves the problem that the existing gas detection device for the access control system mostly adopts a straight flow pipe to discharge the detection gas, and due to the flow characteristics of the gas, it will cause the subsequent air reflux phenomenon, resulting in the problem that the gas detection inside the gas storage chamber is not accurate enough.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas detection device for an access control system, comprising a detector body, a gas storage chamber is fixedly connected to the upper part of the inner right side wall of the detector body, a suction pump is fixedly installed on the inner bottom of the detector body, an air outlet pipe on the upper side of the suction pump is fixedly connected to the air storage chamber, an air inlet pipe is fixedly connected to the left end of the suction pump, the air inlet pipe is fixedly connected to the detector body, and a heating wire is fixedly installed on the lower part of the inner left side wall of the air storage chamber;

[0009] A motor is fixedly installed on the upper part of the inner right side wall of the gas storage chamber, and the output shaft of the motor is fixedly connected to a screw, and a moving block is threadedly connected to the outer side of the screw, and the moving block is slidably connected to the gas storage chamber, and a gas detection sensor is fixedly installed on the lower end of the moving block, and a guide plate is fixedly connected to the inner top of the gas storage chamber, and the horizontal part of the guide plate is slidably connected to the moving block.

[0010] Preferably, two evenly distributed auxiliary plates are slidably sleeved on the outer side of the horizontal part of the guide plate, and the two auxiliary plates are connected to the screw rod by threads. The two auxiliary plates are located on the left and right sides of the moving block. Through the setting of the auxiliary plates, the screw rod can be auxiliary supported to avoid the problem of poor driving effect caused by sinking and deformation of the screw rod.

[0011] Preferably, an air intake mechanism is provided on the air intake pipe, and the air intake mechanism includes a movable disk, the inner wall of the air intake pipe is slidably connected to the movable disk, the inner wall of the movable disk is fixedly connected to a filter, the upper end of the movable disk is fixedly connected to two symmetrically distributed connecting plates, the end surfaces of the two connecting plates are commonly fixedly connected to a contact ball, and a motor 2 is fixedly installed on the left side of the air intake pipe, the output end of the motor 2 is rotatably connected to the air intake pipe, and an impact ball is fixedly connected to the lower side of the output end of the motor 2, and the impact ball is in contact with the contact ball. By setting the filter, impurities such as dust in the air can be filtered out, and under the structure of the motor 2, the impact ball and the like, the filter can be impacted and vibrated, and the filter can be vibrated and cleaned.

[0012] Preferably, a limiting block is fixedly connected to the inner side wall of the air intake pipe, the limiting block contacts the connecting piece, and the limiting block contacts the movable disk. By setting the limiting block, the connecting piece and the movable disk can be contacted and limited.

[0013] Preferably, a fixing rod is fixedly connected to the inner wall of the air inlet pipe and located at the lower side of the movable plate, a spring 1 is welded to the upper side of the fixing rod, and the other end of the spring 1 is welded to the filter screen. By setting the spring 1, the filter screen can be connected for use.

[0014] Preferably, the detector body and the gas storage chamber are jointly provided with an exhaust mechanism, the exhaust mechanism comprising a circulation cylinder, the upper portion of the inner left wall of the detector body is fixedly connected with the circulation cylinder, the inner wall of the circulation cylinder is fixedly connected with a connecting pipe 1, the connecting pipe 1 is fixedly connected to the detector body, the inner wall of the circulation cylinder is fixedly connected with a connecting pipe 2, the connecting pipe 2 is fixedly connected to the gas storage chamber, the inner wall of the circulation cylinder is fixedly connected with a fixed disk, the inner wall of the circulation cylinder and the left side of the fixed disk are fixedly connected with a support rod, the inner wall of the support rod is slidably connected with a magnetic frame, the horizontal portion of the magnetic frame is fixedly connected with a blocking disk, the blocking disk is slidably connected to the fixed disk, a spring 2 is arranged on the outer side of the horizontal portion of the magnetic frame, an electromagnet is fixedly installed on the inner left wall of the circulation cylinder, the electromagnet is located on the left side of the vertical portion of the magnetic frame, and the magnetic frame can be pulled to move by the magnetic attraction of the electromagnet to drive the blocking disk to move, thereby making the fixed disk in a circulation state, and the detected gas can be discharged.

[0015] Preferably, one end of the second spring is fixedly connected to the blocking disk, and the other end of the second spring is welded to the support rod. Through the provision of the second spring, the blocking disk can be connected for use.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. The utility model can suction the air of the access control accessories for subsequent detection by setting up the suction pump, the air intake pipe and other structures. Under the action of the filter, the large particles of impurities in the air can be filtered out to avoid the influence of the particle impurities on the subsequent detection components, the pump body and the like. Under the structure of the motor 2, the impact ball, the spring 1 and the like, the filter can be made to oscillate and shake, and the impurities attached to the filter can be cleaned to ensure the circulation effect of the filter.

[0018] 2. The utility model can heat the gas sampled inside the gas storage chamber by setting a heating wire, so as to avoid the problem of inconvenience in gas detection in a low-temperature environment. Under the blocking effect of the blocking disk, the flow of external gas is prevented from affecting subsequent detection operations. Under the structure of electromagnet, magnetic frame and spring, the blocking disk can be driven to automatically separate from the fixed disk to ensure the normal circulation of the circulation tube and discharge the detected gas for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 For the utility model Figure 1 A magnified view of the air intake mechanism;

[0021] Figure 3 For the utility model Figure 2 A magnified image of point A;

[0022] Figure 4 For the utility model Figure 1 Enlarged view of the exhaust mechanism.

[0023] In the figure: 1. detector body; 2. gas storage chamber; 3. suction pump; 4. air inlet pipe; 5. heating wire; 6. motor 1; 7. screw; 8. moving block; 9. gas detection sensor; 10. guide plate; 11. air intake mechanism; 12. exhaust mechanism; 111. moving disk; 112. filter screen; 113. fixing rod; 114. spring 1; 115. connecting piece; 116. contact ball; 117. limit block; 118. motor 2; 119. impact ball; 121. circulation cylinder; 122. fixing disk; 123. support rod; 124. magnetic frame; 125. blocking disk; 126. spring 2; 127. electromagnet. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 A gas detection device for an access control system comprises a detector body 1, a gas storage chamber 2 is fixedly connected to the upper part of the inner right wall of the detector body 1, a suction pump 3 is fixedly installed on the inner bottom of the detector body 1, an air outlet pipe on the upper side of the suction pump 3 is fixedly connected to the air storage chamber 2, an air inlet pipe 4 is fixedly connected to the left end of the suction pump 3, the air inlet pipe 4 is fixedly connected to the detector body 1, and a heating wire 5 is fixedly installed on the lower part of the inner left wall of the air storage chamber 2;

[0026] A motor 6 is fixedly installed on the upper part of the inner right wall of the gas storage chamber 2, and a screw 7 is fixedly connected to the output shaft of the motor 6. A moving block 8 is threadedly connected to the outer side of the screw 7. The moving block 8 is slidably connected to the gas storage chamber 2. A gas detection sensor 9 is fixedly installed on the lower end of the moving block 8. A guide plate 10 is fixedly connected to the inner top of the gas storage chamber 2, and the horizontal part of the guide plate 10 is slidably connected to the moving block 8.

[0027] See also Figure 1Two evenly distributed auxiliary plates are slidably sleeved on the outer side of the horizontal part of the guide plate 10. The two auxiliary plates are connected to the screw rod 7 by threads. The two auxiliary plates are located on the left and right sides of the moving block 8. Through the setting of the auxiliary plates, the screw rod 7 can be auxiliary supported to avoid the problem of poor driving effect caused by the sinking and deformation of the screw rod 7.

[0028] See also Figure 1 , Figure 2 , Figure 3 An air intake mechanism 11 is provided on the air intake pipe 4, and the air intake mechanism 11 includes a movable disk 111. The movable disk 111 is slidably connected to the inner wall of the air intake pipe 4, and a filter screen 112 is fixedly connected to the inner wall of the movable disk 111. Two symmetrically distributed connecting pieces 115 are fixedly connected to the upper end of the movable disk 111, and the end surfaces of the two connecting pieces 115 are commonly fixedly connected with a contact ball 116. A motor 2 118 is fixedly installed on the left side of the air intake pipe 4, and the output end of the motor 2 118 is rotatably connected to the air intake pipe 4. An impact ball 119 is fixedly connected to the lower side of the output end of the motor 2 118, and the impact ball 119 is in contact with the contact ball 116. Through the setting of the filter screen 112, impurities such as dust in the air can be filtered out. Under the structure of the motor 2 118, the impact ball 119, etc., the filter screen 112 can be impacted and vibrated, and the filter screen 112 can be vibrated and cleaned.

[0029] See also Figure 1 , Figure 2 , Figure 3 A fixing rod 113 is fixedly connected to the inner wall of the air intake pipe 4 and is located at the lower side of the movable disk 111. A spring 114 is welded to the upper side of the fixing rod 113. The other end of the spring 114 is welded to the filter screen 112. By setting the spring 114, the filter screen 112 can be connected and used. A limiting block 117 is fixedly connected to the inner wall of the air intake pipe 4. The limiting block 117 contacts with the connecting piece 115. The limiting block 117 contacts with the movable disk 111. By setting the limiting block 117, the connecting piece 115 and the movable disk 111 can be contacted and limited.

[0030] See also Figure 1 , Figure 4The detector body 1 and the gas storage chamber 2 are jointly provided with an exhaust mechanism 12, and the exhaust mechanism 12 includes a circulation cylinder 121, and the upper part of the inner left wall of the detector body 1 is fixedly connected with the circulation cylinder 121, and the inner wall of the circulation cylinder 121 is fixedly connected with a connecting pipe 1, and the connecting pipe 1 is fixedly connected to the detector body 1, and the inner wall of the circulation cylinder 121 is fixedly connected with a connecting pipe 2, and the connecting pipe 2 is fixedly connected to the gas storage chamber 2, and the inner wall of the circulation cylinder 121 is fixedly connected with a fixed plate 122, and the inner wall of the circulation cylinder 121 and the left side of the fixed plate 122 are fixedly connected with a support rod 123, and the inner wall of the support rod 123 is slidably connected with a magnetic frame 124, and the horizontal part of the magnetic frame 124 is fixedly connected with a blocking Disk 125, blocking disk 125 is slidably connected with fixed disk 122, a spring 126 is arranged on the outer side of the horizontal part of magnetic frame 124, one end of spring 126 is fixedly connected with blocking disk 125, the other end of spring 126 is welded with support rod 123, through the setting of spring 126, blocking disk 125 can be connected for use, an electromagnet 127 is fixedly installed on the inner left wall of circulation cylinder 121, electromagnet 127 is located on the left side of the vertical part of magnetic frame 124, through the magnetic attraction of electromagnet 127, the magnetic frame 124 can be pulled to move, so as to drive blocking disk 125 to move, thereby making fixed disk 122 in a circulation state, and the gas after detection can be discharged.

[0031] The specific implementation process of the utility model is as follows: when in use, the air of the access control accessory can be sucked and input through the setting of the suction pump 3 and the air inlet pipe 4, so that the air flows into the air storage chamber 2. Under the action of the gas detection sensor 9, the air can be detected, and the motor 6 is started to drive the output shaft to rotate, so as to drive the screw 7 to rotate. Under the relationship of the threaded connection, the moving block 8 can be driven to move along the surface of the guide plate 10 to ensure the stable movement of the moving block 8, thereby driving the gas detection sensor 9 to move, improving the dynamic effect of gas detection, so as to ensure the accuracy of detection. When the ambient temperature is low, under the heating effect of the heating wire 5, the gas can be heated up, so that the gas molecules are in a normal active state, so as to ensure the normal detection effect of the gas detection sensor 9;

[0032] By setting the filter 112, large particles of impurities in the circulating air can be filtered out to avoid affecting subsequent detection, etc., and the output end is driven to rotate by the motor 2 118 to drive the impact ball 119 to rotate, so that the impact ball 119 squeezes the contact ball 116 to push the connecting piece 115 to move, and then drive the moving disk 111 to move, so that the moving disk 111 and the connecting piece 115 are separated from the limit block 117, and when the moving disk 111 moves, the filter 112 can be driven to move downward, so that the spring 114 is deformed, and when the impact ball 119 is separated from the contact ball 116, the spring 114 recovers its deformation to push the filter 112 to move upward, and drive the moving disk 111 to move, so that the moving disk 111 contacts and hits the limit block 117, so that the filter 112 is vibrated, and the impurities attached to the filter 112 are vibrated and cleaned to ensure the circulation effect of the filter 112;

[0033] By setting the blocking plate 125, the fixed plate 122 can be blocked, so that the gas storage chamber 2 is in a closed state, avoiding the problem of poor gas detection effect caused by the circulation of internal and external air. When the gas detection inside the gas storage chamber 2 is completed, the electromagnet 127 is started to magnetically attract the magnetic frame 124, so that the magnetic frame 124 moves to the left and drives the blocking plate 125 to move, and the spring 126 is deformed. When the magnetic frame 124 contacts the electromagnet 127, the spring 126 no longer deforms, and the blocking plate 125 is separated from the fixed plate 122, so that the fixed plate 122 is in a circulation state, and the gas storage chamber 2 is in an open state, and the gas inside the gas storage chamber 2 is discharged normally.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas detection device for an access control system, comprising a detector body (1), characterized in that: An air storage chamber (2) is fixedly connected to the upper portion of the inner right side wall of the detector body (1); a suction pump (3) is fixedly installed on the inner bottom of the detector body (1); an air outlet pipe on the upper side of the suction pump (3) is fixedly connected to the air storage chamber (2); an air inlet pipe (4) is fixedly connected to the left end of the suction pump (3); the air inlet pipe (4) is fixedly connected to the detector body (1); and a heating wire (5) is fixedly installed on the lower portion of the inner left side wall of the air storage chamber (2); A motor 1 (6) is fixedly mounted on the upper part of the right inner wall of the gas storage chamber (2); a screw rod (7) is fixedly connected to the output shaft of the motor 1 (6); a moving block (8) is threadedly connected to the outer side of the screw rod (7); the moving block (8) is slidably connected to the gas storage chamber (2); a gas detection sensor (9) is fixedly mounted on the lower end of the moving block (8); a guide plate (10) is fixedly connected to the inner top of the gas storage chamber (2); and a horizontal portion of the guide plate (10) is slidably connected to the moving block (8).

2. A gas detection device for an access control system according to claim 1, characterized in that: Two evenly distributed auxiliary plates are slidably sleeved on the outer side of the horizontal portion of the guide plate (10), and the two auxiliary plates are both connected to the screw rod (7) by threads. The two auxiliary plates are located on the left and right sides of the moving block (8).

3. A gas detection device for an access control system according to claim 1, characterized in that: An air intake mechanism (11) is provided on the air intake pipe (4), the air intake mechanism (11) comprising a movable disk (111), the inner wall of the air intake pipe (4) being slidably connected to the movable disk (111), the inner wall of the movable disk (111) being fixedly connected to a filter screen (112), the upper end of the movable disk (111) being fixedly connected to two symmetrically distributed connecting plates (115), the end surfaces of the two connecting plates (115) being fixedly connected to a contact ball (116), a second motor (118) being fixedly mounted on the left side of the air intake pipe (4), the output end of the second motor (118) being rotatably connected to the air intake pipe (4), the lower side of the output end of the second motor (118) being fixedly connected to an impact ball (119), the impact ball (119) being in contact with the contact ball (116).

4. A gas detection device for an access control system according to claim 3, characterized in that: The inner side wall of the air intake pipe (4) is fixedly connected to a limit block (117), the limit block (117) is in contact with the connecting piece (115), and the limit block (117) is in contact with the movable plate (111).

5. The gas detection device for access control system according to claim 3, characterized in that: A fixing rod (113) is fixedly connected to the inner wall of the air intake pipe (4) and located at the lower side of the movable plate (111), a spring 1 (114) is welded to the upper side of the fixing rod (113), and the other end of the spring 1 (114) is welded to the filter screen (112).

6. A gas detection device for an access control system according to claim 1, characterized in that: The detector body (1) and the gas storage chamber (2) are jointly provided with an exhaust mechanism (12), the exhaust mechanism (12) comprising a circulation tube (121), the upper portion of the inner left side wall of the detector body (1) being fixedly connected to the circulation tube (121), the inner wall of the circulation tube (121) being fixedly connected to a connecting tube 1, the connecting tube 1 being fixedly connected to the detector body (1), the inner wall of the circulation tube (121) being fixedly connected to a connecting tube 2, the connecting tube 2 being fixedly connected to the gas storage chamber (2), the inner wall of the circulation tube (121) being fixedly connected to a fixing plate (122), the A support rod (123) is fixedly connected to the inner wall of the flow tube (121) and is located on the left side of the fixed disk (122); a magnetic frame (124) is slidably connected to the inner wall of the support rod (123); a blocking disk (125) is fixedly connected to the horizontal portion of the magnetic frame (124); the blocking disk (125) is slidably connected to the fixed disk (122); a second spring (126) is provided on the outer side of the horizontal portion of the magnetic frame (124); an electromagnet (127) is fixedly mounted on the inner left side wall of the flow tube (121); the electromagnet (127) is located on the left side of the vertical portion of the magnetic frame (124).

7. A gas detection device for an access control system according to claim 6, characterized in that: One end of the second spring (126) is fixedly connected to the blocking plate (125), and the other end of the second spring (126) is welded to the support rod (123).

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