Bimetallic strip temperature control valve with antirust function and long service life
By installing sleeves and protective blocks on the flange support columns, the bolts and nuts are sealed and protected, solving the problem of cumbersome disassembly caused by rust on the bolts and nuts, and extending the service life of the bimetallic thermostatic valve.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2026-03-13
AI Technical Summary
When existing bimetallic thermostatic valves are connected to external pipelines, the bolts and nuts are prone to rust, making disassembly cumbersome and affecting maintenance.
A sleeve and a protective block are installed on the flange support column. The bolts and nuts are sealed and protected by the engagement of the slot and the positioning block to prevent rust.
It effectively prevents bolts and nuts from rusting, simplifies the disassembly process, and extends the service life of bimetallic thermostatic valves.
Smart Images

Figure CN223992038U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bimetallic strip temperature control valve technology, specifically relating to a long-life bimetallic strip temperature control valve with rust prevention function. Background Technology
[0002] Bimetallic strip thermostatic valves, also known as bimetallic strip steam traps, are a type of adjusting bolt valve containing a bimetallic strip temperature-sensing element. The element deforms when heated as the steam temperature rises or falls, thus actuating the valve core to open or close the valve. With the continuous development of technology, the application of bimetallic strip thermostatic valves is becoming increasingly widespread.
[0003] Existing bimetallic thermostatic valves are typically fastened to external pipelines via flanges using bolts and nuts. However, these bolts and nuts are prone to rusting after prolonged use, making subsequent disassembly of the bimetallic thermostatic valve cumbersome and hindering its maintenance. This issue has become a pressing problem for those in the field. Utility Model Content
[0004] The purpose of this invention is to propose a long-life bimetallic strip temperature control valve with rust prevention function to address the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a long-life bimetallic thermostatic valve with rust prevention function, comprising a bimetallic thermostatic valve body, flanges fixedly connected to the inlet and outlet of the bimetallic thermostatic valve body, a plurality of mounting holes equally spaced on the inner walls of the two flanges, and a support column movably connected to the inner walls of the flanges, each support column having a first through hole on its inner wall, a sleeve movably connected inside the first through hole, and a second through hole on the inner wall of the sleeve. Assembly is achieved by inserting the sleeve into the support column, thereby protecting the bolts and effectively preventing rust from forming on the threads of the bolts, thus avoiding corrosion caused by rust and the resulting problems with disassembly and assembly.
[0006] Preferably, a nut protection block is fixedly connected to the end of the support column away from the sleeve. The inner wall of the nut protection block has a first slot, and a first positioning block is movably connected inside the first slot. The inner wall of the first positioning block has a first receiving groove, and a first sealing block is fixedly connected to the end of the first positioning block away from the support column. This facilitates the engagement of the first slot with the first positioning block, allowing the first positioning block to be fixed. This, in turn, helps to seal and protect the nut through the first receiving groove on the inner wall of the first positioning block, preventing the nut from easily rusting and corroding, and thus ensuring the subsequent disassembly of the nut.
[0007] Preferably, a bolt head protection block is fixedly connected to the end of the sleeve away from the nut protection block. The inner wall of the bolt head protection block has a second slot, the inner wall of the second slot has a second positioning block, the inner wall of the second positioning block has a second receiving groove, and the end of the second positioning block away from the sleeve has a second sealing block fixedly connected to it. This facilitates the engagement of the second slot with the second positioning block, allowing the second positioning block to be fixed. This, in turn, facilitates the sealing and protection of the bolt head through the second receiving groove on the inner wall of the second positioning block, preventing the bolt from easily rusting and corroding. This ensures the subsequent disassembly of the bolt and further guarantees the maintenance and repair of the bimetallic thermostatic valve body.
[0008] Preferably, an alignment block is fixedly connected to the inner wall of the first through hole. The alignment blocks are distributed at equal angles along the axial center line of the first through hole. Specifically, the alignment blocks are distributed in a "U" shape. A protrusion is fixedly connected to the inner wall of the second through hole. The protrusion is distributed at equal angles along the axial center line of the second through hole. Specifically, the sleeve engages with the alignment block through the protrusion, which facilitates the alignment and installation of the sleeve when connecting it to the support column, thereby improving the convenience of connecting the sleeve to the support column.
[0009] Preferably, the first receiving groove is a regular hexagonal structure, and the structure of the first receiving groove is the same as that of the second receiving groove. Specifically, the first receiving groove can also be a circular structure or a square structure, so as to perform sealing and protection work according to bolts and nuts of different shapes.
[0010] Specifically, the diameter of the first through hole is smaller than the diameter of the second through hole, and the second through hole and the first through hole are located on the same axial center line, thereby ensuring effective protection of the bolt.
[0011] Specifically, the first positioning block is made of elastic rubber, which facilitates the effective engagement of the first positioning block into the interior of the second slot for fixation.
[0012] Specifically, the first sealing block and the first positioning block are arranged in a "T" shape, and the first positioning block and the first sealing block are an integrated structure, thereby ensuring that after the first positioning block is engaged and fixed, the first sealing block effectively seals the first slot.
[0013] Specifically, the second positioning block is made of elastic rubber, which facilitates the effective engagement of the second positioning block into the interior of the second slot for fixation.
[0014] Specifically, the second sealing block and the second positioning block are arranged in a "T" shape, and the second positioning block and the second sealing block are an integrated structure, thereby ensuring that the second sealing block and the second slot can effectively seal after the second positioning block is engaged and fixed.
[0015] In this invention, the first receiving groove is a regular hexagonal structure, and the structure of the first receiving groove is the same as that of the second receiving groove.
[0016] Compared with the prior art, the beneficial effects achieved by this utility model are: This utility model,
[0017] (1) By setting up a bimetallic thermostatic valve body, flange, support column, first through hole, sleeve, second through hole, nut protection block, first slot, bolt head protection block, second slot, first positioning block, first receiving groove, first sealing block, second positioning block, second receiving groove, second sealing block, alignment block and protrusion, it is convenient to seal and protect the bolts and nuts. This allows the bimetallic thermostatic valve body to be effectively rust-proofed after being connected to the external pipeline through the flange. This solves the problem that bolts and nuts are prone to rusting after use, which leads to complicated disassembly. This ensures the disassembly and maintenance of the bimetallic thermostatic valve body and extends the service life of the bimetallic thermostatic valve body. Attached Figure Description
[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is an explosion illustration of the present invention. Figure 1 ;
[0021] Figure 3 This is an explosion illustration of the present invention. Figure 2 .
[0022] In the diagram: 1. Bimetallic thermostatic valve body; 2. Flange; 3. Support column; 4. First through hole; 5. Sleeve; 6. Second through hole; 7. Nut protection block; 8. First slot; 9. Bolt head protection block; 10. Second slot; 11. First positioning block; 12. First receiving groove; 13. First sealing block; 14. Second positioning block; 15. Second receiving groove; 16. Second sealing block; 17. Alignment block; 18. Protrusion. Detailed Implementation
[0023] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0024] Please see Figure 1-3 This utility model provides a technical solution: a long-life bimetallic thermostatic valve with rust prevention function, including a bimetallic thermostatic valve body 1. Flanges 2 are fixedly connected to both the inlet and outlet of the bimetallic thermostatic valve body 1. Several mounting holes are equally spaced on the inner walls of both flanges 2. Support columns 3 are movably connected to the inner walls of the flanges 2. First through holes 4 are formed on the inner walls of the support columns 3. A sleeve 5 is movably connected inside the first through holes 4. A second through hole 6 is formed on the inner wall of the sleeve 5. Assembly is achieved by inserting the sleeve 5 into the support column 3. The sleeve 5 protects the bolts, effectively preventing rust from forming on the threads of the bolts, thus avoiding corrosion caused by rust and the resulting problems with disassembly and assembly.
[0025] Preferably, a nut protection block 7 is fixedly connected to the end of the support column 3 away from the sleeve 5. The inner wall of the nut protection block 7 is provided with a first slot 8. A first positioning block 11 is movably connected inside the first slot 8. A first receiving groove 12 is provided on the inner wall of the first positioning block 11. A first sealing block 13 is fixedly connected to the end of the first positioning block 11 away from the support column 3. This facilitates the engagement of the first slot 8 with the first positioning block 11, which can fix the first positioning block 11. In turn, it is beneficial to seal and protect the nut through the first receiving groove 12 on the inner wall of the first positioning block 11, preventing the nut from easily rusting and corroding, and thus ensuring the subsequent disassembly of the nut.
[0026] Preferably, a bolt head protection block 9 is fixedly connected to the end of the sleeve 5 away from the nut protection block 7. The inner wall of the bolt head protection block 9 is provided with a second slot 10, the inner wall of the second slot 10 is provided with a second positioning block 14, the inner wall of the second positioning block 14 is provided with a second receiving groove 15, and the end of the second positioning block 14 away from the sleeve 5 is fixedly connected with a second sealing block 16. This facilitates the engagement of the second slot 10 with the second positioning block 14, which allows the second positioning block 14 to be fixed. This, in turn, facilitates the sealing and protection of the bolt head through the second receiving groove 15 on the inner wall of the second positioning block 14, preventing the bolt from easily rusting and corroding. This ensures the subsequent disassembly of the bolt and further ensures the maintenance and repair of the bimetallic thermostatic valve body 1.
[0027] Preferably, the inner wall of the first through hole 4 is fixedly connected with an alignment block 17, which is distributed at equal angles along the axial center line of the first through hole 4. Specifically, the alignment block 17 is distributed in a "U" shape. The inner wall of the second through hole 6 is fixedly connected with a protrusion 18, which is also distributed at equal angles along the axial center line of the second through hole 6. Specifically, the sleeve 5 engages with the alignment block 17 through the protrusion 18, which facilitates the alignment and installation of the sleeve 5 when connecting with the support column 3, thereby improving the convenience of connecting the sleeve 5 with the support column 3.
[0028] Preferably, the first receiving groove 12 has a regular hexagonal structure, and the structure of the first receiving groove 12 is the same as that of the second receiving groove 15. Specifically, the first receiving groove 12 can also be a circular structure or a square structure, so as to perform sealing and protection work according to bolts and nuts of different shapes.
[0029] Specifically, the diameter of the first through hole 4 is smaller than the diameter of the second through hole 6, and the second through hole 6 and the first through hole 4 are located on the same axial center line, thereby ensuring effective protection of the bolt.
[0030] Specifically, the first positioning block 11 is made of elastic rubber, which facilitates the effective engagement of the first positioning block 11 into the interior of the second slot 10 for fixation.
[0031] Specifically, the first sealing block 13 and the first positioning block 11 are arranged in a "T" shape, and the first positioning block 11 and the first sealing block 13 are an integrated structure, thereby ensuring that after the first positioning block 11 is engaged and fixed, the first sealing block 13 effectively seals the first slot 8.
[0032] Specifically, the second positioning block 14 is made of elastic rubber, which facilitates the effective engagement of the second positioning block 14 into the interior of the second slot 10 for fixation.
[0033] Specifically, the second sealing block 16 and the second positioning block 14 are arranged in a "T" shape, and the second positioning block 14 and the second sealing block 16 are an integrated structure, thereby ensuring that after the second positioning block 14 is engaged and fixed, the second sealing block 16 performs effective sealing work on the second slot 10.
[0034] In use, firstly, the support column 3 passes through the mounting hole of the flange 2. Then, the sleeve 5 is inserted into the alignment block 17 through the protrusion 18, thereby fixing the sleeve 5 inside the support column 3. At this time, the sleeve 5 can be aligned and installed by the equiangular distribution of the protrusion 18 and the alignment block 17, thus improving the ease of assembly between the sleeve 5 and the support column 3. Next, the flange mounting hole of the outer pipe is fitted onto the outer wall of the support column 3 away from the flange 2, and the external bolt is inserted into the second through hole 6 in the sleeve 5. Then, the nut is inserted into the first slot 8 in the nut protection block 7 and tightened with the bolt. Finally, the first positioning block 11 is connected to the nut protection block through the first slot 8. 7. The first positioning block 11 is engaged, thereby sealing the first slot 8 through the first sealing block 13 and sealing and protecting the nut through the first receiving groove 12. After the bolt is installed, its head will be located inside the second slot 10. At this time, the second positioning block 14 is engaged into the second slot 10, which allows the second positioning block 14 to seal the second slot 10 through the second sealing block 16 and seal and protect the bolt head through the second receiving groove 15. This effectively prevents the bolt and nut from rusting, solving the problem of corrosion damage caused by rust on the bolt and nut, which affects the disassembly and assembly work.
[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A long-life bimetallic thermostatic valve with rust prevention function, comprising a bimetallic thermostatic valve body (1), characterized in that: The flange (2) is fixedly connected at the inlet and outlet of the bimetallic strip temperature control valve body (1), a plurality of mounting holes are formed in the inner wall of the two flanges (2) at equal angles, a plurality of support columns (3) are movably connected to the inner wall of the flanges (2), first through holes (4) are formed in the inner wall of the support columns (3), sleeves (5) are movably connected inside the first through holes (4), second through holes (6) are formed in the inner wall of the sleeves (5), nut protection blocks (7) are fixedly connected to one end of the support columns (3) away from the sleeves (5), first clamping grooves (8) are formed in the inner wall of the nut protection blocks (7), bolt head protection blocks (9) are fixedly connected to one end of the sleeves (5) away from the nut protection blocks (7), and second clamping grooves (10) are formed in the inner wall of the bolt head protection blocks (9). First positioning blocks (11) are movably connected inside the first clamping grooves (8), first accommodating grooves (12) are formed in the inner wall of the first positioning blocks (11), first sealing blocks (13) are fixedly connected to one end of the first positioning blocks (11) away from the support columns (3), second positioning blocks (14) are formed in the inner wall of the second clamping grooves (10), second accommodating grooves (15) are formed in the inner wall of the second positioning blocks (14), and second sealing blocks (16) are fixedly connected to one end of the second positioning blocks (14) away from the sleeves (5).
2. The bimetallic thermostat valve with anti-rust function and long service life according to claim 1, characterized in that: Alignment blocks (17) are fixedly connected to the inner wall of the first through holes (4) and are distributed at equal angles along the axial center line of the first through holes (4).
3. The thermostatic valve with high life and anti-rust function bimetallic strip according to claim 1, characterized in that: Protruding blocks (18) are fixedly connected to the inner wall of the second through holes (6) and are distributed at equal angles along the axial center line of the second through holes (6).
4. The thermostatic valve with high life and anti-rust function bimetallic strip according to claim 1, characterized in that: The first accommodating grooves (12) are regular hexagonal structures and have the same structure as the second accommodating grooves (15).