Tail gas exhaust assisting device for dry pump type vacuum pump

Abstract

The invention discloses a tail gas exhaust assisting device for a dry pump type vacuum pump. The tail gas exhaust assisting device comprises a dust removal box and a top box fixedly installed at the top of the dust removal box, a filtering mechanism for filtering particles of tail gas is arranged in the dust removal box, a regulation and control plate is arranged in the dust removal box in a sliding mode, and a plurality of sets of parallel filtering plates are vertically inserted into the regulation and control plate; by controlling the horizontal height of the regulation and control plate in the dust removal box and changing the purification area below the dust removal box, the effect of regulating and controlling the area of the purification area in real time according to the tail gas flow is achieved, the dust removal efficiency is improved, when the tail gas flow is abnormally increased, the two control valves are synchronously opened to cope with the situation, stable operation of the dust removal system is ensured, and the service life is prolonged. And the transverse brush transversely brushes and cleans the filter screen strips synchronously, and the longitudinal brush longitudinally brushes and cleans the filter plate synchronously, so that multi-directional cleaning of the filter plate is realized, and the cleaning effect of the filter plate is improved jointly.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and more specifically, to an exhaust gas auxiliary device for a dry pump vacuum pump. Background Art

[0002] In the normal production process of the workshop, vacuum pump equipment is used in various processes. The main components of the tail gas discharged by the vacuum pump are: dimethyl carbonate, ethyl methyl carbonate, ethylene carbonate, methane, ethane and a small amount of vacuum pump oil. These tail gases contain a large amount of organic solvents. Discharging them into the air will not only cause environmental pollution, but also cause harm to the human body. In order to avoid the impact of the exhaust gas on the environment, the exhaust gas is usually filtered and purified to assist in exhaust operations; Traditional filtration and purification methods are mostly to filter first, then directly burn through the combustion method, and convert organic solvents into carbon dioxide and water. At present, the purification area of ​​the equipment for filtering dust particles is constant, but because the received exhaust gas flow value is floating, the equipment cannot adjust the area of ​​the purification area in real time according to the exhaust gas flow, and cannot respond in time when facing abnormally increased exhaust gas, making it difficult to ensure dust removal effect; Moreover, the dust particle filtering device is often cleaned directly by applying a brush to the filter plate, which often results in poor cleaning effect of the filter plate, and it is impossible to improve the cleaning effect of the filter plate by performing multi-directional cleaning on the filter plate to ensure stable operation of the dust removal effect; In view of the above technical defects, a solution is now provided. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an exhaust assisting device for a dry pump vacuum pump.

[0004] To achieve the above object, the present invention provides the following technical solution: an exhaust gas exhaust assisting device for a dry pump vacuum pump, comprising a dust removal box and a top box fixedly mounted on the top thereof, wherein a filtering mechanism for filtering exhaust gas particles is arranged inside the dust removal box; The filtering mechanism comprises a regulating plate slidably connected to the inside of the dust removal box, a plurality of groups of filter plates arranged in parallel are vertically inserted on the regulating plate, a connecting rod is fixedly arranged on the top wall of the regulating plate between two filter plates, the top of the connecting rod movably penetrates into the top box, and the tops of the plurality of connecting rods are commonly connected to a transverse rod; The outer side of the filter plate is provided with a cleaning mechanism for performing multi-directional cleaning on the filter plate.

[0005] Furthermore, a plurality of groups of filter strips are arranged on the filter plate, and the plurality of groups of filter strips are arranged parallel to each other.

[0006] Furthermore, threaded rod 2 is threadedly connected to the outer walls on both sides of the transverse rod, a driving motor is fixedly arranged at the bottom of the threaded rod 2, and the top of the threaded rod 2 is rotatably connected to the top box through a bearing.

[0007] Furthermore, the cleaning mechanism comprises fixed plates symmetrically arranged on both sides of the filter plate, the top of the fixed plates is fixedly connected to the regulating plate, and longitudinal plates are fixedly arranged on the opposite bottom side walls of the two fixed plates.

[0008] Furthermore, a longitudinal brush is provided on the side wall of the longitudinal plate, and the longitudinal brush is in contact with the outer wall of the filter plate.

[0009] Furthermore, a slide rail is provided on the bottom wall of the regulating plate above the longitudinal plate, and a plurality of groups of mutually fixedly connected reciprocating threaded rods are arranged above the longitudinal plate, and a transverse block is threadedly connected to the outer wall of the reciprocating threaded rod.

[0010] Furthermore, a limit plate is fixedly connected to the top of the transverse block, and the limit plate is slidably matched with the slide rail. A transverse brush is fixedly provided on the side wall of the transverse block close to the filter plate, and the transverse brush is in contact with the outer wall of the filter plate.

[0011] Furthermore, the ends of the two reciprocating threaded rods on both sides are connected to a rotating shaft, a friction wheel is fixedly provided on the outer wall of the rotating shaft, the friction wheel is transmission-coordinated with the filter plate opposite to it, and a fixed rod is rotatably provided at the end of the rotating shaft through a bearing, and the top of the fixed rod is connected to the regulating plate.

[0012] Furthermore, a dust removal port is provided on the bottom wall of the dust removal box between the two filter plates, and a receiving member is provided below the dust removal port; The receiving member comprises a limiting frame connected to the bottom wall of the dust removal box, the limiting frame corresponds to the dust removal port, and a receiving drawer is slidably arranged in the limiting frame.

[0013] Furthermore, the input end of the dust removal box is provided with two air inlet pipes, the input ends of the two air inlet pipes are commonly connected to an air inlet three-way pipe, and a control valve 1 is provided on the outer wall of the air inlet pipe; the output end of the dust removal box is provided with two air outlet pipes, the output ends of the two air outlet pipes are commonly connected to an air outlet three-way pipe, and a control valve 2 is provided on the outer wall of the air outlet pipe.

[0014] Technical effects and advantages of the present invention: 1. The present invention controls the driving motor to rotate the threaded rod, moves the horizontal rod upward, drives multiple groups of connecting rods to move upward synchronously, controls the control plate to move upward a certain distance as needed, and expands the purification area below the dust removal box. By controlling the horizontal height of the control plate inside the dust removal box, the purification area below the dust removal box is changed, so as to achieve the effect of real-time regulation of the purification area according to the exhaust gas flow rate, and for abnormally increased exhaust gas, only one of the two control valves needs to be opened synchronously. The two control valves cooperate with each other, which not only improves the dust removal efficiency, but also can respond by synchronously opening the two control valves when the exhaust gas flow rate increases abnormally, thereby ensuring the stable operation of the dust removal system.

[0015] 2. In the present invention, during the movement of the regulating plate, the friction wheel contacts the outer wall of the filter plate, so that the rotating shaft and the reciprocating threaded rod rotate synchronously, and the limiting plate is limited by the slide rail to realize the reciprocating movement of the horizontal block, so that the horizontal brush can brush the filter strips horizontally for cleaning. At the same time, the longitudinal brush is always in contact with the outer wall of the filter plate, thereby realizing longitudinal brushing and cleaning of the filter plate, and cooperating with the transverse brush to realize multi-directional cleaning of the filter plate, thereby jointly improving the cleaning effect of the filter plate and ensuring the dust removal efficiency of the device.

[0016] 3. The present invention controls the horizontal height of the control plate inside the dust removal box, thereby changing the purification area below the dust removal box, so as to achieve the effect of real-time control of the purification area area according to the exhaust gas flow rate, which not only improves the dust removal efficiency, but also can respond by synchronously opening the two control valves when the exhaust gas flow rate increases abnormally, thereby ensuring the stable operation of the dust removal system, and synchronously allowing the horizontal brush to brush the filter strips horizontally and the vertical brush to brush the filter plate longitudinally to clean, thereby achieving multi-directional cleaning of the filter plate and improving the cleaning effect of the filter plate, and coordinating with the real-time control of the purification area area to jointly ensure the dust removal efficiency of the present device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structural appearance of the present invention.

[0018] Figure 2 It is a front view of the internal structure of the dust removal box in the present invention.

[0019] Figure 3 It is a three-dimensional diagram of the filtering mechanism in the present invention.

[0020] Figure 4 It is a front view of the internal structure of the top box in the present invention.

[0021] Figure 5 It is a three-dimensional diagram of the cleaning mechanism in the present invention.

[0022] Figure 6 It is a stereoscopic view of the reciprocating threaded rod and the transverse block in the present invention.

[0023] Figure 7 It is a structural schematic diagram of the slide rail in the present invention.

[0024] Figure 8 It is a three-dimensional diagram of the receiving drawer and the limiting frame in the present invention.

[0025] The accompanying drawings are marked as follows: 1. dust removal box; 3. top box; 4. air inlet pipe; 5. air inlet tee; 6. filtering mechanism; 61. regulating plate; 62. filter plate; 63. filter mesh; 64. connecting rod; 65. transverse rod; 66. threaded rod two; 7. cleaning mechanism; 71. slide rail; 72. limit plate; 73. transverse block; 74. reciprocating threaded rod one; 75. transverse brush; 76. friction wheel; 77. fixing rod; 78. longitudinal brush; 79. fixing plate; 710. longitudinal plate; 8. air outlet tee; 9. dust removal port; 10. limit frame; 11. receiving drawer; 12. air outlet pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1: Figure 1-8 As shown, the exhaust assisting device for a dry pump type vacuum pump proposed in this embodiment includes a dust removal box 1 and a top box 3 fixedly mounted on the top thereof, and a filtering mechanism 6 for filtering exhaust gas particles is arranged inside the dust removal box 1; like Figure 2-4 As shown, the filtering mechanism 6 includes a regulating plate 61 slidably arranged inside the dust removal box 1, and a plurality of sets of filter plates 62 arranged in parallel are vertically inserted on the regulating plate 61. A connecting rod 64 is fixedly arranged on the top wall of the regulating plate 61 located between two filter plates 62. The top of the connecting rod 64 movably penetrates into the top box 3, and the tops of the plurality of connecting rods 64 are commonly connected to a transverse rod 65 vertically connected thereto; By controlling the horizontal height of the control plate 61 inside the dust removal box 1, the purification area below the dust removal box 1 is changed, so as to achieve the effect of regulating the area of ​​the purification area in real time according to the exhaust gas flow rate, and for the abnormally increased exhaust gas, it is only necessary to synchronously open the two control valves 1. The two cooperate with each other, which not only improves the dust removal efficiency, but also can respond to the abnormal increase in exhaust gas flow rate by synchronously opening the two control valves 1. When the position of the control plate 61 inside the dust removal box 1 is changed, the final position thereof does not contact the filter mesh strips 63, thereby reducing the phenomenon that the exhaust gas enters the upper and lower areas of the dust removal box 1; like Figure 2-4 As shown, a plurality of groups of filter mesh strips 63 are arranged on the filter plate 62, and the plurality of groups of filter mesh strips 63 are arranged parallel to each other; a cleaning mechanism 7 for multi-directional cleaning of the filter plate 62 is arranged on the outer side of the filter plate 62; like Figure 2-4 As shown, threaded rods 66 are threadedly connected to the outer walls of both sides of the transverse rod 65, a driving motor is fixedly provided at the bottom of the threaded rod 66, and the top of the threaded rod 66 is rotatably connected to the top box 3 through a bearing.

[0028] It should be explained here that: the drive motor is controlled to rotate the threaded rod 2 66, so that the transverse rod 65 moves upward, driving the multiple groups of connecting rods 64 to move upward synchronously, and then controlling the control plate 61 to move upward a certain distance as required, thereby expanding the purification area below the dust removal box 1; Embodiment 2: Figure 2-3 As shown in 5-7, the exhaust assisting device for a dry pump type vacuum pump proposed in this embodiment is improved on the basis of embodiment 1, and the cleaning mechanism 7 includes fixed plates 79 symmetrically arranged on both sides of the filter plate 62, the top of the fixed plate 79 is fixedly connected to the regulating plate 61, and longitudinal plates 710 are fixedly arranged on the opposite bottom side walls of the two fixed plates 79, and longitudinal brushes 78 are arranged on the side walls of the longitudinal plates 710, and the longitudinal brushes 78 are in contact with the outer wall of the filter plate 62; The longitudinal brush 78 is always in contact with the outer wall of the filter plate 62, thereby realizing the longitudinal brush 78 dynamic cleaning of the filter plate 62, and cooperating with the transverse brush 75, thereby realizing multi-directional cleaning of the filter plate 62; like Figure 2-3 As shown in 5-7, a slide rail 71 is provided on the bottom wall of the regulating plate 61 located above the longitudinal plate 710, and a plurality of mutually fixedly connected reciprocating threaded rods 74 are provided above the longitudinal plate 710, and a transverse block 73 is threadedly connected to the outer wall of the reciprocating threaded rod 74, and a limit plate 72 is fixedly connected to the top of the transverse block 73, and the limit plate 72 is slidably matched with the slide rail 71, and a transverse brush 75 is fixedly provided on the side wall of the transverse block 73 close to the filter plate 62, and the transverse brush 75 is in contact with the outer wall of the filter plate 62; like Figure 2-3 As shown in 5-7, the ends of the two reciprocating threaded rods 74 on both sides are connected to a rotating shaft, and a friction wheel 76 is fixedly provided on the outer wall of the rotating shaft. The friction wheel 76 is in transmission cooperation with the filter plate 62 opposite to it. A fixing rod 77 is rotatably provided at the end of the rotating shaft through a bearing, and the top of the fixing rod 77 is connected to the regulating plate 61; The fixing rod 77 mainly serves to limit the positions of the multiple sets of reciprocating threaded rods 74, and the multiple reciprocating threaded rods 74 are fixedly connected at their ends in sequence, presenting the appearance of a rod; It should be explained that the friction wheel 76 contacts the outer wall of the filter plate 62, so that the rotating shaft and the reciprocating threaded rod 74 rotate synchronously, and the limiting plate 72 is limited by the slide rail 71, so that the reciprocating movement of the transverse block 73 is realized, so that the transverse brush 75 can horizontally brush and clean the filter mesh strips 63; Since a rubber ring is sleeved on the outer wall of the friction wheel 76, the friction force between the friction wheel 76 and the filter plate 62 can be increased, thereby ensuring the rotation of the friction wheel 76; like Figure 1-3 As shown in FIG. 8 , a dust removal port 9 is provided on the bottom wall of the dust removal box 1 between the two filter plates 62, and a receiving member is provided below the dust removal port 9; The receiving member includes a limit frame 10 connected to the bottom wall of the dust removal box 1, the limit frame 10 corresponds to the dust removal port 9, and a receiving drawer 11 is slidably arranged in the limit frame 10; It should be explained here that the cleaned dust falls into the interior of the receiving drawer 11 through the dust removal port 9. When cleaning the dust inside the dust removal box 1, the dust particles can be removed by simply pulling the receiving drawer 11 outwards. When the receiving drawer 11 is located inside the limiting frame 10, the connection between the receiving drawer 11 and the limiting frame 10 is always airtight, which prevents the exhaust gas inside the dust removal box 1 from overflowing, thereby ensuring the safety of the device when purifying the exhaust gas; The end of the receiving drawer 11 is open. Figure 8 , thereby facilitating the discharge of dust particles inside the receiving drawer 11; like Figure 1-2 As shown, the input end of the dust removal box 1 is provided with two air intake pipes 4, the input ends of the two air intake pipes 4 are commonly connected to an air intake tee pipe 5, and a control valve 1 is provided on the outer wall of the air intake pipe 4; The output end of the dust removal box 1 is provided with two air outlet pipes 12 , the output ends of the two air outlet pipes 12 are commonly connected to an air outlet three-way pipe 8 , and a control valve 2 is provided on the outer wall of the air outlet pipe 12 .

[0029] It should be explained here that: the two control valves 1 on the intake pipe 4 are opened synchronously to deal with the abnormal increase of exhaust gas flow. Under normal conditions, the control valve 1 on the lower intake pipe 4 is opened; Similarly, the two control valves 2 on the outlet pipe 12 are opened synchronously to deal with the phenomenon of abnormal increase in exhaust gas flow. Under normal conditions, the control valve 2 on the lower outlet pipe 12 is opened; The present invention is combined with Example 1 and Example 2 to know that: By controlling the horizontal height of the control plate 61 inside the dust removal box 1, the purification area below the dust removal box 1 is changed, so as to achieve the effect of real-time regulation of the purification area according to the exhaust gas flow rate, and for abnormally increased exhaust gas, only two control valves need to be opened synchronously, and the two control valves cooperate with each other, which not only improves the dust removal efficiency, but also ensures the stable operation of the dust removal system; In the process of the movement of the regulating plate 61, the friction wheel 76 is in contact with the outer wall of the filter plate 62 to realize the reciprocating movement of the transverse block 73, so that the transverse brush 75 can dynamically clean the filter mesh strips 63; the longitudinal brush 78 is always in contact with the outer wall of the filter plate 62 to realize the longitudinal brush 78 dynamic cleaning of the filter plate 62, and cooperates with the transverse brush 75 to realize multi-directional cleaning of the filter plate 62, thereby jointly improving the cleaning effect of the filter plate 62 and ensuring the dust removal efficiency of the device; Working process: Step 1: First, the exhaust gas of the dry vacuum pump enters the intake pipe 4 below through the intake tee pipe 5, enters the dust removal box 1 through the intake pipe 4, and is filtered by the filter mesh strips 63 on the multiple groups of horizontally arranged filter plates 62, thereby removing the dust particles in the exhaust gas. The purified exhaust gas is discharged through the exhaust pipe 12 below, and then discharged through the exhaust tee pipe 8 for further processing; Step 2: When the exhaust gas flow rate of the air intake three-way pipe 5 increases abnormally: synchronously open the control valves 1 on the two air intake pipes 4, so that the exhaust gas synchronously enters the upper and lower areas of the dust removal box 1 for purification, and finally is synchronously discharged through the two air outlet pipes 12; When the exhaust gas flow rate of the intake three-way pipe 5 increases slightly: control the driving motor to rotate the threaded rod 2 66, let the transverse rod 65 move upward, drive the multiple groups of connecting rods 64 to move upward synchronously, and then control the control plate 61 to move upward a certain distance as needed to expand the purification area below the dust removal box 1. By controlling the horizontal height of the control plate 61 inside the dust removal box 1, the purification area below the dust removal box 1 is changed, so as to achieve the effect of real-time regulation of the purification area area according to the exhaust gas flow rate, and for the abnormally increased exhaust gas, only two control valves need to be opened synchronously, and the two control valves cooperate with each other, which not only improves the dust removal efficiency, but also can respond by synchronously opening the two control valves when the exhaust gas flow rate increases abnormally, so as to ensure the stable operation of the dust removal system; Step 3: During step 2, the friction wheel 76 contacts the outer wall of the filter plate 62, so that the rotating shaft and the reciprocating threaded rod 74 rotate synchronously, and the limiting plate 72 is limited by the slide rail 71, so that the transverse block 73 can be reciprocated, and the transverse brush 75 can horizontally brush and clean the filter strips 63; At the same time, the longitudinal brush 78 is always in contact with the outer wall of the filter plate 62, thereby realizing the longitudinal brush 78 dynamic cleaning of the filter plate 62, and cooperating with the transverse brush 75 to realize multi-directional cleaning of the filter plate 62, thereby jointly improving the cleaning effect of the filter plate 62.

[0030] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An exhaust assisting device for a dry pump vacuum pump, comprising a dust removal box (1) and a top box (3) fixedly mounted on the top of the dust removal box, characterized in that: The dust removal box (1) is provided with a filtering mechanism (6) for filtering exhaust gas particles inside; The filtering mechanism (6) comprises a regulating plate (61) slidably connected to the inside of the dust removal box (1), a plurality of groups of filter plates (62) arranged in parallel are vertically inserted on the regulating plate (61), a connecting rod (64) is fixedly arranged on the top wall of the regulating plate (61) between two filter plates (62), the top of the connecting rod (64) movably penetrates into the top box (3), and the tops of the plurality of connecting rods (64) are commonly connected to a transverse rod (65); A cleaning mechanism (7) for performing multi-directional cleaning on the filter plate (62) is provided on the outer side thereof.

2. The exhaust assisting device for a dry pump vacuum pump according to claim 1, characterized in that: The filter plate (62) is provided with a plurality of groups of filter mesh strips (63), and the plurality of groups of filter mesh strips (63) are arranged parallel to each other.

3. The exhaust assisting device for a dry vacuum pump according to claim 1, characterized in that: The outer walls on both sides of the transverse rod (65) are both threadedly connected with a second threaded rod (66), a driving motor is fixedly arranged at the bottom of the second threaded rod (66), and the top of the second threaded rod (66) is rotatably connected to the top box (3) via a bearing.

4. The exhaust assisting device for a dry pump vacuum pump according to claim 1, characterized in that: The cleaning mechanism (7) comprises fixed plates (79) symmetrically arranged on both sides of the filter plate (62), the top of the fixed plates (79) being fixedly connected to the regulating plate (61), and longitudinal plates (710) being fixedly arranged on opposite bottom side walls of the two fixed plates (79).

5. The exhaust assisting device for a dry vacuum pump according to claim 4, characterized in that: A longitudinal brush (78) is provided on the side wall of the longitudinal plate (710), and the longitudinal brush (78) is in contact with the outer wall of the filter plate (62).

6. The exhaust assisting device for a dry vacuum pump according to claim 1, characterized in that: The bottom wall of the regulating plate (61) located above the longitudinal plate (710) is provided with a slide rail (71), and a plurality of groups of mutually fixedly connected reciprocating threaded rods (74) are arranged above the longitudinal plate (710), and a transverse block (73) is threadedly connected to the outer wall of the reciprocating threaded rod (74).

7. The exhaust assisting device for a dry vacuum pump according to claim 6, characterized in that: The top of the transverse block (73) is fixedly connected to a limit plate (72), the limit plate (72) is slidably matched with the slide rail (71), and a transverse brush (75) is fixedly provided on the side wall of the transverse block (73) close to the filter plate (62), and the transverse brush (75) is in contact with the outer wall of the filter plate (62).

8. The exhaust assisting device for a dry vacuum pump according to claim 7, characterized in that: The ends of the two reciprocating threaded rods (74) located on both sides are connected to a rotating shaft, and a friction wheel (76) is fixedly provided on the outer wall of the rotating shaft. The friction wheel (76) is in driving cooperation with the filter plate (62) opposite to it. A fixing rod (77) is rotatably provided at the end of the rotating shaft through a bearing, and the top of the fixing rod (77) is connected to the regulating plate (61).

9. The exhaust assisting device for a dry vacuum pump according to claim 1, characterized in that: The dust removal box (1) is provided with a dust removal opening (9) on the bottom wall between the two filter plates (62), and a receiving member is provided below the dust removal opening (9); The receiving member comprises a limit frame (10) connected to the bottom wall of the dust removal box (1), the limit frame (10) corresponds to the dust removal port (9), and a receiving drawer (11) is slidably arranged in the limit frame (10).

10. The exhaust assisting device for a dry vacuum pump according to claim 1, characterized in that: The dust removal box (1) is provided with two air inlet pipes (4) at the input end, the input ends of the two air inlet pipes (4) are commonly connected to an air inlet three-way pipe (5), and a control valve 1 is provided on the outer wall of the air inlet pipe (4); the dust removal box (1) is provided with two air outlet pipes (12) at the output end, the output ends of the two air outlet pipes (12) are commonly connected to an air outlet three-way pipe (8), and a control valve 2 is provided on the outer wall of the air outlet pipe (12).

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