A dryer

Abstract

The utility model discloses a dryer, including valve body, cup body and connecting pipe, valve body is equipped with air inlet and air outlet, valve body is fixedly connected with cup body, and connecting pipe is located in cup body and is fixedly connected with valve body, and the filling cavity is formed between connecting pipe and cup body, and a plurality of drying agents are equipped in the filling cavity, and the air passage is equipped in connecting pipe, and the air passage is equipped on the circumferential outer wall of connecting pipe, and the air passage is still wrapped with the tubular filter core on the circumferential outer wall of connecting pipe, and the tubular filter core is correspondingly arranged with the air passage, the cup body is provided with the anti -spill filter screen with valve body, and the anti -spill filter screen has the inner hole, and the connecting pipe passes through the inner hole, and the outer peripheral edge of anti -spill filter screen is fixedly provided with the first steel sheet, and the hole wall edge of inner hole is fixedly provided with the second steel sheet, the nut is connected on connecting pipe, and the anti -spill filter screen is fixed on connecting pipe through the nut, the tubular filter core replaces the filter sheet, and the gas flow capacity is enhanced, and the anti -spill filter screen has high structural strength and is not easy to deform, and blocks the drying agent leakage.

Description

Technical Field

[0001] This utility model relates to the field of dryer technology, and in particular to a dryer. Background Technology

[0002] A dryer is a device used to remove moisture from compressed air, thereby obtaining dry compressed air. Silica gel granule-filled dryers utilize the adsorption properties of silica gel granules to absorb moisture from compressed air, achieving a drying effect. Existing silica gel granule-filled dryer structures typically include a valve body with an inlet and an outlet. A cup body is connected to the lower end of the valve body, and a connecting pipe is installed inside the cup body. A gas channel is formed within the connecting pipe, allowing compressed gas to pass through. This gas channel communicates with both the inner cavity of the cup body and the outlet. Several silica gel granules are placed between the outer wall of the connecting pipe and the inner wall of the cup body. Compressed gas enters through the inlet, enters the inner cavity of the cup body, passes through the silica gel granules to obtain dry compressed air, and then exits through the outlet via the gas channel. However, a drawback of the existing technology is that the silica gel granules inside the cup body are prone to leakage when the product is transported or inverted, affecting its use. Furthermore, to further filter the air, the dryer also incorporates filter elements; however, existing filter elements are usually located within the gas channel, resulting in a reduced effective airflow. Therefore, improvements are necessary. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a dryer with a simple and reasonable structure and convenient operation. It uses a cylindrical filter element to replace the filter plate, which enhances the gas flow. The anti-spill filter screen is fixed to the connecting pipe by a nut. The anti-spill filter screen is equipped with a first steel plate and a second steel plate to enhance the structural strength and prevent deformation. When the product is transported or inverted, the anti-spill filter screen can effectively prevent the desiccant in the filling chamber from leaking out from the gap between the cup body and the valve body.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The dryer of this utility model includes a valve body, a cup body, and a connecting pipe. The valve body has an air inlet and an air outlet, and is fixedly connected to the cup body. The connecting pipe is disposed in the cup body and is fixedly connected to the valve body. A filling cavity is formed between the connecting pipe and the cup body, and a plurality of desiccants are disposed in the filling cavity. A ventilation channel is provided inside the connecting pipe, and the air inlet communicates with the air outlet through the ventilation channel. A ventilation hole is provided on the circumferential outer wall of the connecting pipe, and the ventilation hole communicates with the filling cavity and the ventilation channel respectively. A cylindrical filter element is also wrapped on the circumferential outer wall of the connecting pipe, and the cylindrical filter element is correspondingly disposed with the ventilation hole. An anti-splash filter screen is abutting between the cup body and the valve body. The anti-splash filter screen has an inner hole, and the connecting pipe passes through the inner hole. A first steel plate is fixedly disposed on the outer peripheral edge of the anti-splash filter screen, and a second steel plate is fixedly disposed on the edge of the inner hole wall. A nut is threadedly connected to the connecting pipe, and the anti-splash filter screen is fixed to the connecting pipe by the nut.

[0005] Furthermore, the anti-spray filter is made of stainless steel.

[0006] Furthermore, the desiccant is porous color-changing silica gel particles.

[0007] Furthermore, a bottom connecting seat is provided at the end of the connecting pipe away from the valve body. One end of the bottom connecting seat is fixedly connected to the cup body, and the other end of the bottom connecting seat extends into the connecting pipe and is sealed to the connecting pipe.

[0008] Furthermore, the bottom connecting seat and the cup body are fixedly connected by a fastener, and a first sealing ring is provided between the bottom connecting seat and the cup body.

[0009] Furthermore, the connecting pipe has a recessed portion on its circumferential outer wall that corresponds to and mates with the cylindrical filter element, and the cylindrical filter element is fixedly disposed in the recessed portion.

[0010] Furthermore, the cup body is made of a transparent material.

[0011] Furthermore, a second sealing ring is provided between the cup body and the valve body.

[0012] Furthermore, a stepped portion is provided at one end of the connecting pipe near the valve body, and the anti-spray filter is axially confined between the stepped portion and the nut.

[0013] Furthermore, a third sealing ring is provided at the bottom between the connecting pipe and the valve body.

[0014] The beneficial effects of this utility model are as follows: Conventional similar products use filter plates to achieve the filtration function, and the filter plates are set inside the connecting pipe, usually at the end of the connecting pipe near the valve body, which reduces the effective airflow. This utility model uses a cylindrical filter element instead of a filter plate. The cylindrical filter element is wrapped around the circumferential outer wall of the connecting pipe, which greatly increases the flow of compressed air. The cylindrical filter element is set in accordance with the vent hole, which can effectively play the role of filtration and prevent impurities in the compressed air from passing through the vent hole.

[0015] An anti-spillage filter is also installed between the cup body and the valve body. The anti-spillage filter is fixed to the connecting pipe by a nut. The anti-spillage filter is equipped with a first steel plate and a second steel plate to enhance the structural strength and prevent deformation. When the product is transported or inverted, the anti-spillage filter can effectively prevent the desiccant in the filling cavity from leaking out from the gap between the cup body and the valve body.

[0016] The working principle of the utility model is as follows: Compressed air enters the filling chamber from the air inlet of the valve body. The desiccant in the filling chamber adsorbs the moisture in the air and dries the air. After the dried compressed air passes through the cylindrical filter element to filter out impurities in the air, it enters the vent hole, flows along the vent channel, and is finally discharged from the air outlet of the valve body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 yes Figure 2 Enlarged structural diagram at point A; Figure 4 yes Figure 2 Enlarged structural diagram at point B; Figure 5 This is an exploded structural diagram of the present invention; Figure 6 This is a structural diagram of the connecting pipe, bottom connecting seat, and bolt connection.

[0018] Figures 1-6 In the middle: 1. Valve body; 11. Air inlet; 12. Air outlet; 2. Cup body; 21. Second sealing ring; 3. Filling cavity; 31. Desiccant; 4. Connecting pipe; 41. Vent channel; 42. Vent hole; 43. Stepped part; 44. Recessed part; 45. Third sealing ring; 5. Cylindrical filter element; 6. Anti-spill filter screen; 61. Inner hole; 62. First steel sheet; 63. Second steel sheet; 7. Bottom connecting seat; 71. First sealing ring; 8. Nut; 9. Fixing component. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figures 1-6 A dryer is shown, comprising a valve body 1, a cup body 2, and a connecting pipe 4. The valve body 1 has independent air inlets 11 and outlets 12, and is fixedly connected to the cup body 2. The connecting pipe 4 is vertically disposed within the cup body 2 and fixedly connected to the valve body 1. An annular filling cavity 3 is formed between the connecting pipe 4 and the cup body 2. A plurality of desiccants 31 are disposed within the filling cavity 3. A through-ventilation channel 41 is axially disposed inside the connecting pipe 4. The air inlet 11 communicates with the outlet 12 through the ventilation channel 41. Ventilation holes 42 are disposed on the circumferential outer wall of the connecting pipe 4, and the ventilation holes 42 communicate with both the filling cavity 3 and the ventilation channel 41. (Reference) Figure 4 The connecting pipe 4 is further encased in a cylindrical filter element 5 on its circumferential outer wall, and the cylindrical filter element 5 is correspondingly disposed with respect to the vent hole 42. Preferably, in this embodiment, the connecting pipe 4 has a recessed portion 44 on its circumferential outer wall that corresponds to and mates with the cylindrical filter element 5. The cylindrical filter element 5 is fixedly disposed within the recessed portion 44, and the cylindrical filter element 5 covers the vent hole 42, which can effectively perform the function of filtration and prevent impurities in the compressed air from passing through the vent hole 42.

[0021] refer to Figure 2 , Figure 3 and Figure 5 A spill-proof filter 6 is provided between the cup body 2 and the valve body 1. Preferably, in this embodiment, the spill-proof filter 6 is made of stainless steel and is used to cover the open end of the cup body 2. Compared with the plastic filter commonly used in the prior art, the stainless steel spill-proof filter 6 has high structural strength and is not easily deformed. The spill-proof filter 6 has an inner hole 61, and the connecting pipe 4 passes through the inner hole 61 and is fixedly connected to the valve body 1. A first steel sheet 62 is fixedly provided on the outer peripheral edge of the spill-proof filter 6. The first steel sheet 62 is arranged in a ring shape. By providing the first steel sheet 62, the edge rigidity of the spill-proof filter 6 can be enhanced. A second steel sheet 63 is fixedly provided on the edge of the hole wall of the inner hole 61. The second steel sheet 63 is arranged in a ring shape. By providing the second steel sheet 63, the rigidity at the inner hole 61 is enhanced, and the deformation of the inner hole 61 can be effectively prevented.

[0022] Conventional products of the same type use filter discs to achieve the filtration function, and the filter discs are placed inside the connecting pipe 4, usually at one end of the connecting pipe 4 near the valve body 1, which reduces the effective airflow. This utility model uses a cylindrical filter element 5 instead of a filter disc. The cylindrical filter element 5 is wrapped around the circumferential outer wall of the connecting pipe 4, which greatly increases the flow of compressed air. The cylindrical filter element 5 is set in correspondence with the vent hole 42, which can effectively play a filtering role and prevent impurities in the compressed air from passing through the vent hole 42.

[0023] refer to Figure 2 , Figure 3 and Figure 5 The connecting pipe 4 has a nut 8 threaded onto its outer circumferential wall. During installation, the connecting pipe 4 is first inserted, and then the nut 8 is screwed in to fix it. The lower end face of the nut 8 presses against the upper end face of the anti-spillage filter 6. The anti-spillage filter 6 is fixed to the connecting pipe 4 by the nut 8, ensuring a stable and reliable connection. Preferably, in this embodiment, a step portion 43 is provided at one end of the connecting pipe 4 near the valve body 1. The anti-spillage filter 6 is axially confined between the step portion 43 and the nut 8, ensuring that the anti-spillage filter 6 is stably set between the valve body 1 and the cup body 2, thereby effectively preventing the desiccant 31 in the filling cavity 3 from leaking from the gap between the cup body 2 and the valve body 1 during transportation or inversion.

[0024] Preferably, in this embodiment, the cup body 2 is made of a transparent material, such as acrylic or transparent plastic, and the desiccant 31 is porous color-changing silica gel particles. Users can directly observe the color change of the silica gel particles through the transparent cup body 2 and determine whether to replace the silica gel particles based on the color change (when the silica gel particles turn from blue to pink after adsorption saturation, they need to be replaced). The saturated silica gel particles can be regenerated by baking and drying, and can be reused, which is cost-effective.

[0025] Preferably, in this embodiment, the reference Figure 2 The end of the connecting pipe 4 away from the valve body 1 is provided with a bottom connecting seat 7. One end of the bottom connecting seat 7 is fixedly connected to the cup body 2. The bottom connecting seat 7 and the cup body 2 are fixedly connected by a fastener 9. In this embodiment, the fastener 9 is a bolt. The other end of the bottom connecting seat 7 extends into the inner hole 61 of the connecting pipe 4 and is sealed to the connecting pipe 4. In this embodiment, the bottom connecting seat 7 and the connecting pipe 4 are interference-fitted to ensure that the desiccant 31 in the filling cavity 3 will not enter the connecting pipe 4.

[0026] Preferably, in this embodiment, the reference Figure 2 The bottom connecting seat 7 and the cup body 2 are provided with a first sealing ring 71, which can effectively prevent gas leakage.

[0027] Preferably, in this embodiment, the reference Figure 3 A second sealing ring 21 is provided between the cup body 2 and the valve body 1 to effectively prevent gas leakage.

[0028] Preferably, in this embodiment, the reference Figure 3 A third sealing ring 45 is provided at the bottom between the connecting pipe 4 and the valve body 1, which can effectively prevent gas leakage.

[0029] The working principle of this utility model is as follows: Compressed air enters the filling chamber 3 from the air inlet 11 of the valve body 1. The desiccant 31 (color-changing silica gel particles) in the filling chamber 3 adsorbs the moisture in the air through the porous structure, thus drying the air. The dried compressed air then passes through the cylindrical filter element 5 to filter out impurities in the air and enters the vent 42. It then flows along the venting channel 41 and is finally discharged from the air outlet 12 of the valve body 1.

[0030] When the product is transported or reversed, the anti-spill filter 6 is fixed to the connecting pipe 4 by the nut 8, and the anti-spill filter 6 adopts a rigid support structure with stainless steel mesh and edge steel plates, which is not easily deformed. It can effectively prevent the desiccant 31 in the filling cavity 3 from leaking out from the gap between the cup body 2 and the valve body 1.

[0031] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A dryer, comprising a valve body (1), a cup body (2), and a connecting pipe (4), wherein the valve body (1) is provided with an air inlet (11) and an air outlet (12), the valve body (1) is fixedly connected to the cup body (2), the connecting pipe (4) is disposed inside the cup body (2) and fixedly connected to the valve body (1), a filling cavity (3) is formed between the connecting pipe (4) and the cup body (2), a plurality of desiccants (31) are disposed in the filling cavity (3), a ventilation channel (41) is provided inside the connecting pipe (4), and the air inlet (11) is connected to the air outlet (12) through the ventilation channel (41), characterized in that: The connecting pipe (4) has a vent hole (42) on its circumferential outer wall. The vent hole (42) is connected to the filling cavity (3) and the ventilation channel (41) respectively. The connecting pipe (4) is also wrapped with a cylindrical filter element (5). The cylindrical filter element (5) is arranged correspondingly to the vent hole (42). A spill-proof filter (6) is provided between the cup body (2) and the valve body (1). The spill-proof filter (6) has an inner hole (61). The connecting pipe (4) passes through the inner hole (61). A first steel sheet (62) is fixedly provided on the outer periphery of the spill-proof filter (6), and a second steel sheet (63) is fixedly provided on the edge of the hole wall of the inner hole (61). A nut (8) is threaded onto the connecting pipe (4), and the anti-spray filter (6) is fixed onto the connecting pipe (4) by the nut (8).

2. The dryer according to claim 1, characterized in that: The anti-spray filter (6) is made of stainless steel.

3. The dryer according to claim 1, characterized in that: The desiccant (31) is porous color-changing silica gel particles.

4. A dryer according to claim 1, characterized in that: The end of the connecting pipe (4) away from the valve body (1) is provided with a bottom connecting seat (7). One end of the bottom connecting seat (7) is fixedly connected to the cup body (2), and the other end of the bottom connecting seat (7) extends into the connecting pipe (4) and is sealed to the connecting pipe (4).

5. A dryer according to claim 4, characterized in that: The bottom connecting seat (7) is fixedly connected to the cup body (2) by a fastener (9), and a first sealing ring (71) is provided between the bottom connecting seat (7) and the cup body (2).

6. A dryer according to claim 1, characterized in that: The connecting pipe (4) has a recess (44) on its circumferential outer wall that corresponds to and cooperates with the cylindrical filter element (5), and the cylindrical filter element (5) is fixedly disposed in the recess (44).

7. A dryer according to claim 1, characterized in that: The cup body (2) is made of transparent material.

8. A dryer according to claim 1, characterized in that: A second sealing ring (21) is provided between the cup body (2) and the valve body (1).

9. A dryer according to claim 1, characterized in that: The connecting pipe (4) has a stepped portion (43) at one end near the valve body (1), and the anti-spray filter (6) is axially confined between the stepped portion (43) and the nut (8).

10. A dryer according to claim 1, characterized in that: A third sealing ring (45) is provided at the bottom between the connecting pipe (4) and the valve body (1).

Images