Filtering type drain valve with anti-blocking structure

Abstract

The utility model belongs to the field of drain valves, and particularly relates to a filter type drain valve with an anti-blocking structure, which comprises a valve body, a valve seat is arranged on the valve body, a valve rod is mounted at the top of the valve seat through a bearing and penetrates through the valve seat, a bump is fixedly connected to the lower end of the valve rod, an anti-loosening mechanism is arranged on the valve seat, and the anti-loosening mechanism is arranged on the valve seat. The inner side of the valve body is fixedly connected with a filter screen, and the inner side of the valve body is fixedly connected with a hollow ring. The filter screen is arranged in the valve body and used for filtering large particles of media circulating in the valve body, in addition, the protruding block is arranged at the tail end of the valve rod, the combination of the hollow ring and the plug is arranged beside the filter screen, in this way, the protruding block is rotated through the valve rod, the protruding block pushes the plug, and opening and closing of the valve body can be completed; a plurality of lifting pins are arranged on the plug, and the positions and the number of the lifting pins correspond to those of the meshes of the filter screen, so that the filter screen can be dredged, and the anti-blocking purpose is achieved.

Description

Technical Field

[0001] This utility model relates to the field of steam trap technology, specifically a filter-type steam trap with an anti-clogging structure. Background Technology

[0002] A steam trap is also called a drain valve, an automatic drainer, or a condensate drainer.

[0003] A search revealed a utility model patent with patent authorization announcement number CN219933695U, which discloses a drain valve with an anti-clogging structure. The valve includes a drain valve body, a vibration motor fixedly installed on one side of the top of the drain valve body's inner cavity, a filter screen plate fixedly connected to the output end of the vibration motor, a valve plate movably connected to the inner cavity of the drain valve body, a rotating rod fixedly connected to the top of the valve plate, a handle fixedly connected to the top of the rotating rod, an auxiliary rod fixedly connected to the bottom of the valve plate, a bearing movably connected to the bottom of the auxiliary rod, and the bottom of the bearing fixedly connected to the bottom of the drain valve body's inner cavity. Mounting heads are fixedly connected to both sides of the drain valve body, and the inner cavity of the mounting heads has internal threads.

[0004] When existing steam traps are in use, because the medium contains large particles that need to be filtered, many steam traps need to be equipped with filter components. However, the particles can cause blockage of the filter components themselves, which will also affect the flow of the medium. In addition, loose valve stems will directly affect the sealing performance of the valve body when it is closed. Utility Model Content

[0005] The purpose of this invention is to provide a filter-type steam trap with an anti-clogging structure, which solves the problems of easy clogging and poor sealing when the existing filter-type steam trap is closed.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a filter-type drain valve with an anti-clogging structure, comprising a valve body, a valve seat on the valve body, a valve stem mounted on the top of the valve seat via a bearing, the valve stem passing through the valve seat, a protrusion fixedly connected to the lower end of the valve stem, an anti-loosening mechanism on the valve seat, a filter screen fixedly connected to the inner side of the valve body, a hollow ring fixedly connected to the inner side of the valve body, a plug slidably connected to the inner side of the hollow ring, and a top pin fixedly connected to the side of the plug near the filter screen.

[0007] Preferably, a rotating wheel, made of stainless steel, is fixedly connected to the top of the valve stem. The rotating wheel facilitates the rotation of the valve stem.

[0008] Preferably, the position and number of the top pins correspond to the mesh size of the filter screen. The top pins can be used to unclog the mesh of the filter screen.

[0009] Preferably, a guide rod is fixedly connected to the hollow ring, and the guide rod is slidably connected to the plug. A spring is installed inside the plug, with one end of the spring fixedly connected to the guide rod and the other end of the spring fixedly connected to the inner surface of the plug. The guide rod and spring provide elastic support and guidance for the plug.

[0010] Preferably, the anti-loosening mechanism includes a locking disc slidably connected to the outside of the valve stem body, and the locking disc contacts the valve seat. A locking block is fixedly connected to the top of the valve seat, and the locking block engages with the locking disc. The anti-loosening mechanism prevents the valve stem from loosening after rotational adjustment.

[0011] Preferably, two connecting rods are fixedly connected to the upper end of the locking disc, and a pull ring is fixedly connected to the top of both connecting rods, with the pull ring located on the outside of the valve stem. The connecting rods and pull ring facilitate pulling up the locking disc.

[0012] Preferably, a guide block is fixedly connected to the inner ring wall of the locking disc, and the guide block is slidably connected to the valve stem. The guide block provides a guiding function for the locking disc.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model incorporates a filter screen within the valve body to filter large particles from the medium flowing through the valve. Additionally, a protrusion is positioned at the end of the valve stem, and a combination of a hollow ring and a plug is placed next to the filter screen. By rotating the valve stem, the protrusion pushes the plug, thus opening and closing the valve. Furthermore, multiple pins are placed on the plug, with their positions and numbers corresponding to the mesh size of the filter screen. This helps to unclog the filter screen and prevent blockage.

[0015] 2. This utility model provides a locking mechanism on the valve seat. The locking disc in the locking mechanism can slide axially on the valve stem via a guide block. A locking block is provided on the valve seat. When the locking disc and the locking block engage, the valve stem is locked. This prevents the valve stem from loosening, thereby preventing the valve body from failing to seal properly due to valve stem loosening. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A schematic diagram of the anti-loosening mechanism;

[0018] Figure 3 This utility model Figure 1 A front sectional view;

[0019] Figure 4 This utility model Figure 3 Enlarged view of point A;

[0020] Figure 5 This utility model Figure 3 A schematic diagram of the bump structure.

[0021] In the diagram: 1. Valve body; 2. Valve seat; 3. Valve stem; 4. Protrusion; 5. Rotary wheel; 6. Anti-loosening mechanism; 7. Filter screen; 8. Hollow ring; 9. Plug; 10. Top pin; 11. Guide rod; 12. Spring; 61. Locking disc; 62. Connecting rod; 63. Pull ring; 64. Guide block; 65. Locking block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 A filter-type drain valve with an anti-clogging structure includes a valve body 1, a valve seat 2 on the valve body 1, a valve stem 3 mounted on the top of the valve seat 2 via a bearing, the valve stem 3 passing through the valve seat 2, a protrusion 4 fixedly connected to the lower end of the valve stem 3, and a rotating wheel 5 made of stainless steel fixedly connected to the top of the valve stem 3. The rotating wheel 5 facilitates the rotation of the valve stem 3.

[0024] Please see Figure 3 A filter screen 7 is fixedly connected to the inner side of the valve body 1. A hollow ring 8 is also fixedly connected to the inner side of the valve body 1. A plug 9 is slidably connected to the inner side of the hollow ring 8. A top pin 10 is fixedly connected to the side of the plug 9 closest to the filter screen 7. The position and number of top pins 10 correspond to the mesh size of the filter screen 7. The mesh size of the filter screen 7 can be cleared by the top pins 10. A guide rod 11 is fixedly connected to the hollow ring 8. The guide rod 11 is slidably connected to the plug 9. A spring 12 is installed inside the plug 9. One end of the spring 12 is fixedly connected to the guide rod 11, and the other end of the spring 12 is fixedly connected to the inner surface of the plug 9. The guide rod 11 and the spring 12 provide elastic support and guidance for the plug 9.

[0025] Please see Figures 1-4An anti-loosening mechanism 6 is provided on the valve seat 2. This mechanism prevents the valve stem 3 from loosening after rotational adjustment. The anti-loosening mechanism 6 includes a locking disc 61 slidably connected to the outside of the valve stem 3, and the locking disc 61 contacts the valve seat 2. A locking block 65 is fixedly connected to the top of the valve seat 2, and the locking block 65 engages with the locking disc 61. Two connecting rods 62 are fixedly connected to the upper end of the locking disc 61, and a pull ring 63 is fixedly connected to the top of both connecting rods 62, located on the outside of the valve stem 3. The connecting rods 62 and the pull ring 63 facilitate pulling up the locking disc 61. A guide block 64 is fixedly connected to the inner wall of the locking disc 61, and the guide block 64 is slidably connected to the valve stem 3. The guide block 64 guides the locking disc 61.

[0026] The specific implementation process of this utility model is as follows: In use, firstly, the locking disc 61 is pulled upward by the pull ring 63 and the connecting rod 62, so that the locking disc 61 is disengaged from the locking block 65, thereby releasing the restriction on the valve stem 3. Then, the rotating wheel 5 rotates to the valve stem 3, and the valve stem 3 drives the protrusion 4 to rotate. The longer end of the protrusion 4 will apply a pushing force to the plug 9, so that it creates a gap with the hollow ring 8, thereby opening the valve body 1. The medium can flow in the valve body 1 and will be filtered out by the filter screen 7. Then, the pull ring 63 is released, and the locking disc 61 falls down and re-engages with the locking block 65, which can prevent the valve stem 3 from loosening. In addition, the protrusion 4 is rotated to insert the top pin 10 on the plug 9 into the mesh of the filter screen 7, which can clear the filter screen 7 and prevent the valve body 1 from being blocked.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter type hydrophobic valve with anti-blocking structure, comprising a valve body (1), characterized in that: The valve body (1) is provided with a valve seat (2), the top of the valve seat (2) is provided with a valve stem (3) through bearing, the valve stem (3) penetrates the valve seat (2), the lower end of the valve stem (3) is fixedly connected with a protruding block (4), the valve seat (2) is provided with an anti-loosening mechanism (6), the inner side of the valve body (1) is fixedly connected with a filter screen (7), the inner side of the valve body (1) is fixedly connected with a hollow ring (8), the inner side of the hollow ring (8) is slidably connected with a plug (9), the side of the plug (9) close to the filter screen (7) is fixedly connected with a top pin (10).

2. The filter type hydrophobic valve with anti-blocking structure according to claim 1, characterized in that: The top of the valve stem (3) is fixedly connected with a rotating wheel (5), the rotating wheel (5) is made of stainless steel.

3. The filter type hydrophobic trap with anti-clogging structure according to claim 1, characterized in that: The position and number of the top pin (10) correspond to the mesh of the filter screen (7).

4. The filter type hydrostatic trap with anti-clogging structure according to claim 1, characterized in that: The hollow ring (8) is fixedly connected with a guide rod (11), the guide rod (11) is slidably connected with the plug (9), the inside of the plug (9) is provided with a spring (12), one end of the spring (12) is fixedly connected with the guide rod (11), the other end of the spring (12) is fixedly connected with the inner surface of the plug (9).

5. The filter type trap hydronic expansion vessel with anti-clogging structure according to claim 1, characterized in that: The anti-loosening mechanism (6) includes a lock disc (61) slidably connected with the outer side of the valve stem (3), the lock disc (61) is in contact with the valve seat (2), the top of the valve seat (2) is fixedly connected with a lock block (65), the lock block (65) is clamped with the lock disc (61).

6. The filter type freeze-proof drain valve with anti-blocking structure according to claim 5, characterized in that: The upper end of the lock disc (61) is fixedly connected with two connecting rods (62), the top of the two connecting rods (62) is fixedly connected with a pull ring (63), and the pull ring (63) is located on the outer side of the valve stem (3).

7. The filter type hydrostatic trap with anti-clogging structure according to claim 5, characterized in that: The inner wall of the lock disc (61) is fixedly connected with a guide block (64), the guide block (64) is slidably connected with the valve stem (3).

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