Negative pressure pneumatic conveying gas drying device

Abstract

The utility model relates to the technical field of gas drying, and discloses a negative pressure pneumatic conveying gas drying device which comprises an electric push rod arranged at the top of a bottom plate; the moving frame penetrates through the middle of the drying cavity and is slidably connected with the drying cavity, and the right side wall of the moving frame is fixedly connected with an output shaft of the electric push rod; the humidity sensors are symmetrically arranged on the inner side wall of the air outlet pipe and electrically connected with the electric push rod; and the fixing mechanism is arranged on the movable frame and the adsorption layer. When the drying capacity of the adsorption layers is weakened, the humidity sensor detects that the gas humidity is improved, the electric push rod pushes the moving frame to the left side, the adsorption layer on the left side of the moving frame gradually retreats from the drying cavity, the adsorption layer on the right side extends into the drying cavity, and the saturated adsorption layer on the left side is replaced through the fixing mechanism; and the two adsorption layers are replaced back and forth, so that the effect of replacing the adsorption layers can be achieved without shutdown, and the gas drying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas drying, in particular to a negative pressure pneumatic conveying gas drying device. Background Technique

[0002] Negative pressure pneumatic conveying is a system that uses negative pressure (i.e., a pressure difference lower than atmospheric pressure) to convey materials. Its working principle is to generate negative pressure in a closed pipeline, suck the materials into the pipeline, and then convey the materials to the destination by air power. The negative pressure pneumatic conveying system has a series of advantages, such as remote control, easy centralized management, and the pipeline is not easy to block. Before negative pressure pneumatic conveying, the gas needs to be dried. Using dry gas can effectively prevent the materials from getting damp and keep the materials in a dry state, which is particularly important for moisture-absorbing materials. Moist air may combine with the materials to form wet blocks or adhesions, resulting in pipeline blockage. Using dry gas can reduce the occurrence of this situation and ensure the smooth operation of the conveying system.

[0003] Most of the existing gas drying devices absorb the water vapor in the gas through adsorbents. The longer the adsorbent is used, the weaker its adsorption capacity, but the adsorbent in the device is not easy to replace, so the gas drying efficiency is reduced. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a negative pressure pneumatic conveying gas drying device, which has the advantage of convenient replacement of the adsorption layer, and solves the problem that in the existing gas drying device, the adsorption capacity of the adsorption layer for drying the gas weakens with the increase of the use time, but the fixed adsorption layer in the device is not easy to replace, so the drying efficiency of the device is reduced.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solution: a negative pressure pneumatic conveying gas drying device, including a main body assembly, and the main body assembly includes:

[0008] A bottom plate, on the top of which a drying chamber is provided;

[0009] An air inlet pipe, which is connected to the front end of the drying chamber in a penetrating manner;

[0010] An air outlet pipe, which is connected to the rear end of the drying chamber in a penetrating manner;

[0011] A replacement assembly is provided on the bottom plate, the drying chamber and the air outlet pipe, and the replacement assembly includes:

[0012] An electric push rod, which is arranged on the top of the bottom plate;

[0013] A moving frame is disposed through the middle of the drying chamber and is slidably connected to the drying chamber. The right side wall of the moving frame is fixedly connected to the output shaft of the electric push rod;

[0014] Through grooves are symmetrically formed on the moving frame;

[0015] An adsorption layer is disposed in the through grooves;

[0016] Humidity sensors are symmetrically disposed on the inner side walls of the air outlet pipes. The humidity sensors are electrically connected to the electric push rod;

[0017] A fixing mechanism is disposed on the moving frame and the adsorption layer.

[0018] Preferably, the fixing mechanism includes:

[0019] Cavities are symmetrically formed on the moving frame;

[0020] Pull rods are disposed inside the cavities. The opposite ends of the pull rods penetrate and extend outside the moving frame;

[0021] Limit blocks are fixedly connected to one ends of the pull rods inside the cavities;

[0022] Springs are fixedly connected between the inner walls of the cavities and the limit blocks. The springs are sleeved outside the pull rods;

[0023] Pulling plates are fixedly connected to one ends of the pull rods outside the moving frame;

[0024] Limit grooves are symmetrically formed on one side of the adsorption layer close to the limit blocks.

[0025] Preferably, a sealing gasket is disposed at the top of the drying chamber. The sealing gasket is located above the moving frame.

[0026] Preferably, the top of the limit block has an inclined surface.

[0027] Preferably, sliders are symmetrically disposed at the bottom of the moving frame. Sliding grooves are symmetrically formed at the top of the bottom plate. The sliders are slidably connected in the sliding grooves.

[0028] Preferably, a handle is disposed at the top of the adsorption layer.

[0029] (III) Beneficial effects

[0030] Compared with the prior art, the present utility model provides a negative pressure pneumatic conveying gas drying device, which has the following beneficial effects:

[0031] This drying device has the advantage of convenient replacement of the adsorption layer. When the drying capacity of the adsorption layer weakens, the humidity sensor detects an increase in the gas humidity. The humidity sensor controls the electric push rod to start through the controller. The electric push rod pushes the moving frame to the left. The adsorption layer on the left side of the moving frame gradually exits the drying chamber, and the adsorption layer on the right side extends into the drying chamber. The saturated adsorption layer on the left is replaced through the fixing mechanism, which facilitates the replacement again after the adsorption layer on the right becomes saturated. The back-and-forth replacement of the two adsorption layers enables the effect of replacing the adsorption layer without stopping the machine, increasing the efficiency of gas drying. It solves the problem that in the existing gas drying device, the adsorption capacity of the adsorption layer for drying gas weakens with the increase of the usage time, but the fixed adsorption layer in the device is not convenient to replace, thus reducing the drying efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of the present utility model;

[0033] Figure 2 It is a schematic structural diagram of the drying chamber separation structure of the present utility model;

[0034] Figure 3 It is a schematic structural diagram of the moving frame movement structure of the present utility model;

[0035] Figure 4 It is a schematic cross-sectional structure diagram of the moving frame of the present utility model.

[0036] In the figure:

[0037] 1. Main body assembly; 11. Bottom plate; 12. Drying chamber; 13. Air inlet pipe; 14. Air outlet pipe;

[0038] 2. Replacement assembly; 21. Electric push rod; 22. Moving frame; 221. Slide block; 222. Slide groove; 23. Through groove; 24. Adsorption layer; 241. Handle; 25. Humidity sensor; 26. Fixing mechanism; 261. Cavity; 262. Pull rod; 263. Limit block; 264. Spring; 265. Pulling plate; 266. Limit groove; 27. Sealing gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0040] Embodiment 1

[0041] Refer to Figures 1-4, a negative pressure pneumatic conveying gas drying device, comprising a main body assembly 1, and the main body assembly 1 includes: a bottom plate 11, at the top of which there is a drying chamber 12; an air inlet pipe 13, which is connected to the front end of the drying chamber 12 in a penetrating manner; an air outlet pipe 14, which is connected to the rear end of the drying chamber 12 in a penetrating manner; a replacement assembly 2 is provided on the bottom plate 11, the drying chamber 12 and the air outlet pipe 14, and the replacement assembly 2 includes: an electric push rod 21, which is arranged on the top of the bottom plate 11; a moving frame 22, which is arranged through the middle of the drying chamber 12 and is slidably connected to the drying chamber 12, and the right side wall of the moving frame 22 is fixedly connected to the output shaft of the electric push rod 21; through grooves 23, which are symmetrically opened on the moving frame 22; an adsorption layer 24, which is arranged in the through grooves 23; humidity sensors 25, which are symmetrically arranged on the inner side wall of the air outlet pipe 14, and the humidity sensors 25 are electrically connected to the electric push rod 21; a fixing mechanism 26, which is arranged on the moving frame 22 and the adsorption layer 24. The fixing mechanism 26 includes: cavities 261, which are symmetrically opened on the moving frame 22; pull rods 262, which are arranged inside the cavities 261, and the opposite ends of the pull rods 262 penetrate and extend to the outside of the moving frame 22; limit blocks 263, which are fixedly connected to one end of the pull rods 262 inside the cavities 261; springs 264, which are fixedly connected between the inner wall of the cavities 261 and the limit blocks 263, and the springs 264 are sleeved outside the pull rods 262; a pull plate 265, which is fixedly connected to one end of the pull rods 262 outside the moving frame 22; limit grooves 266, which are symmetrically opened on one side of the adsorption layer 24 close to the limit blocks 263. A sealing gasket 27 is arranged on the top of the drying chamber 12, and the sealing gasket 27 is located above the moving frame 22.

[0042] In use, the staff conveys the gas to be dried into the drying chamber 12 through the air inlet pipe 13. When the gas passes through the adsorption layer 24, it is adsorbed and dried. The dried gas is conveyed to the next step through the air outlet pipe 14. The humidity sensor 25 monitors the humidity of the gas dried by the adsorption layer 24. When the adsorption layer 24 has been used for a long time, the adsorption layer 24 gradually reaches a saturated state, and its adsorption and drying capacity weakens. At this time, the humidity of the dried gas increases. When the humidity sensor 25 detects an increase in the gas humidity, the humidity sensor 25 sends the data to a controller (not shown in the figure). The controller controls the electric push rod 21 to start. The electric push rod 21 pushes the moving frame 22 to the left. The adsorption layer 24 on the left side of the moving frame 22 gradually exits the drying chamber 12, and the adsorption layer 24 on the right side extends into the drying chamber 12. There is no need to stop the machine to replace the adsorption layer 24, which improves the efficiency of gas drying. At the same time, the staff replaces the saturated adsorption layer 24 on the left through the fixing mechanism 26, which facilitates the replacement of the adsorption layer 24 on the right after saturation: the staff pulls the pull plate 265 outward. The pull plate 265 drives the pull rod 262 and the limit block 263 to move in the direction of the pull plate 265. The limit block 263 disengages from the limit groove 266. At this time, the staff can lift upward to remove the saturated adsorption layer 24 from the through groove 23. Before replacing the new adsorption layer 24, the staff pulls the pull plate 265 in advance to make the limit block 263 extend into the cavity 261, and the spring 264 is compressed. Then, the new adsorption layer 24 is placed in the through groove 23. When the pull plate 265 is released, the elastic force generated by the deformation of the spring 264 pushes the limit block 263 into the inside of the limit groove 266 to fix the adsorption layer 24, which facilitates subsequent replacement. Through the back-and-forth replacement of the two adsorption layers 24, the effect of replacing the adsorption layer 24 can be achieved without stopping the machine, increasing the efficiency of gas drying. The gasket 27 seals the area above the through groove 23 after the movement of the moving frame 22 to prevent gas from overflowing from the through groove 23 and affecting the efficiency of gas drying.

[0043] Embodiment 2

[0044] On the basis of Embodiment 1, an auxiliary function is added.

[0045] Refer to Figures 1-4 The top of the limit block 263 has an inclined surface. The bottom of the moving frame 22 is symmetrically provided with sliders 221. The top of the bottom plate 11 is symmetrically provided with chutes 222. The sliders 221 are slidably connected to the chutes 222. The top of the adsorption layer 24 is provided with a handle 241.

[0046] The inclined plane at the top of the limit block 263 enables the staff to fix the adsorption layer 24 without pulling the pull plate 265 in advance: The staff directly inserts the adsorption layer 24 into the through groove 23. When the outer side wall of the adsorption layer 24 contacts the inclined plane at the top of the limit block 263, the limit block 263 is pushed into the cavity 261, and the spring 264 is compressed. When the adsorption layer 24 completely enters the inside of the through groove 23, the limit block 263 and the limit groove 266 are on the same horizontal line. The deformed spring 264 after compression pops the limit block 263 into the limit groove 266, realizing the automatic fixation of the adsorption layer 24 and improving the convenience of the staff's operation. When the moving frame 22 is pushed by the electric push rod 21 to move, the bottom sliders 221 slide in the two sliding grooves 222 respectively. The setting of the sliders 221 and the sliding grooves 222 increases the stability of the moving frame 22 when it moves, facilitating the timely replacement of the adsorption layer 24. The handle 241 facilitates the staff to pull out or place the adsorption layer 24. The top of the handle 241 is flush with the top end of the through groove 23 to prevent the handle 241 from affecting the normal movement of the moving frame 22.

[0047] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A negative pressure pneumatic conveying gas drying device, comprising a main body assembly (1), and the main body assembly (1) includes: A bottom plate (11) with a drying chamber (12) arranged on its top; An air inlet pipe (13) which is connected to the front end of the drying chamber (12) in a penetrating manner; An air outlet pipe (14) which is connected to the rear end of the drying chamber (12) in a penetrating manner; It is characterized in that: a replacement assembly (2) is arranged on the bottom plate (11), the drying chamber (12) and the air outlet pipe (14), and the replacement assembly (2) includes: An electric push rod (21) arranged on the top of the bottom plate (11); A moving frame (22) which penetrates through the middle of the drying chamber (12) and is slidably connected to the drying chamber (12), and the right side wall of the moving frame (22) is fixedly connected to the output shaft of the electric push rod (21); Through grooves (23) symmetrically opened on the moving frame (22); An adsorption layer (24) arranged in the through grooves (23); Humidity sensors (25) symmetrically arranged on the inner side wall of the air outlet pipe (14), and the humidity sensors (25) are electrically connected to the electric push rod (21); A fixing mechanism (26) arranged on the moving frame (22) and the adsorption layer (24).

2. The negative pressure pneumatic conveying gas drying device according to claim 1, wherein: The fixing mechanism (26) includes: Cavities (261) symmetrically opened on the moving frame (22); Pull rods (262) arranged inside the cavities (261), and the opposite ends of the pull rods (262) penetrate and extend to the outside of the moving frame (22); Limit blocks (263) fixedly connected to one end of the pull rods (262) inside the cavities (261); Springs (264) fixedly connected between the inner walls of the cavities (261) and the limit blocks (263), and the springs (264) are sleeved outside the pull rods (262); Pulling plates (265) fixedly connected to one end of the pull rods (262) located outside the moving frame (22); Limit grooves (266) symmetrically opened on one side of the adsorption layer (24) close to the limit blocks (263).

3. The negative pressure pneumatic conveying gas drying device according to claim 2, wherein: A sealing gasket (27) is arranged on the top of the drying chamber (12), and the sealing gasket (27) is located above the moving frame (22).

4. The negative pressure pneumatic conveying gas drying device according to claim 3, characterized in that: The top of the limit block (263) has an inclined surface.

5. The negative pressure pneumatic conveying gas drying device according to claim 4, characterized in that: Sliders (221) are symmetrically arranged at the bottom of the moving frame (22), and sliding grooves (222) are symmetrically opened on the top of the bottom plate (11), and the sliders (221) are slidably connected in the sliding grooves (222).

6. The negative pressure pneumatic conveying gas drying device according to claim 5, wherein: A handle (241) is arranged on the top of the adsorption layer (24).

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