Rising stem gate valve with lubricating sheath

Abstract

The utility model belongs to the technical field of rising stem gate valves, and particularly relates to a rising stem gate valve with a lubricating sheath. The rising stem gate valve at least comprises a rising stem gate valve body. A threaded valve rod is at least connected to the center of the rising stem gate valve body, a locking nut is connected to the upper portion of the threaded valve rod, and the threaded valve rod on the upper portion of the locking nut forms a valve rising stem. The cable also comprises a lubricating sheath. The lubricating sheath is sleeved on the upper portion of the valve rising stem, and the bottom end of the lubricating sheath is fixedly connected with the locking nut. After the rising stem gate valve is lubricated and protected by the lubricating device, the rising stem gate valve can be easily opened or closed only by two hands; a valve which is used for a long time and cannot be opened or closed by means of external force can be easily opened or closed. A lubricating sheath adopts a waste galvanized pipe, and a lubricant adopts waste lubricating oil, so that the cost is saved; and meanwhile, the maintenance and replacement cost of the rising stem gate valve is greatly saved, the labor intensity of operators is reduced, and the hidden dangers of safe production and long-period operation of the device are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of rising stem gate valves, and in particular relates to a rising stem gate valve with a lubricating sleeve. Background Art

[0002] Many factories use a large number of rising stem gate valves, which are in full open or full closed state when in use. Although the valves are lubricated, maintained, and moved during the overhaul period, and grease is applied for protection and lubrication, as time goes by, the grease ages, and the valve lubrication and maintenance are not in place, which causes sludge to accumulate on the exposed threaded valve stem, the locking nut at the top of the valve, the guide groove and copper sleeve on the valve body, and the handwheel to become stuck and rusted, causing the valve to be heavy to open or close or unable to open or close, and the valve needs to be forcibly opened or closed with the help of tools, which invisibly increases the damage rate of the valve and increases the labor intensity of the operators, posing a hidden danger to the safe production and long-term operation of the device. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a rising stem gate valve with a lubricating sleeve.

[0004] The technical solution adopted by the utility model is:

[0005] A rising stem gate valve with a lubricating sleeve comprises at least a rising stem gate valve body; a threaded valve stem is connected at least at the center of the rising stem gate valve body, a locking nut is connected to the upper part of the threaded valve stem, and the threaded valve stem at the upper part of the locking nut forms the valve rising stem; and also comprises a lubricating sleeve; the lubricating sleeve is sleeved on the valve rising stem, and the bottom end of the lubricating sleeve is fixedly connected to the locking nut.

[0006] The lubricating sleeve is a cylindrical hollow tube with a sealed upper end and an open lower end, and a filling port is opened on the top surface, and a sealing cover is connected to the filling port; the open lower end is fixedly connected to the upper top surface of the locking nut.

[0007] The diameter of the filling port is 2 to 3 mm.

[0008] The lubricating sleeve is a hollow cylinder; the inner diameter of the lubricating sleeve is larger than the outer diameter of the valve rising stem, and is not larger than the outer diameter of the locking nut.

[0009] The height of the lubricating sleeve is not less than the height of the valve rising stem when the locking nut is tightened.

[0010] The height of the lubricating sleeve is 1 cm higher than the height of the valve rising stem.

[0011] The lubricating sheath is a galvanized pipe.

[0012] The galvanized pipe is a waste galvanized pipe.

[0013] The lubricating sheath is filled with lubricant.

[0014] The lubricant filled in the lubricating sheath is waste lubricating oil; the liquid level height of the lubricant filling is 1 / 2 or 2 / 3 of the height of the lubricating sheath.

[0015] Beneficial effects:

[0016] (1) By using the present utility model to perform lubrication protection treatment on the rising stem gate valve, the valve that was originally heavy to open and close and required tools can now be easily opened or closed with only both hands; the valve that could not be opened or closed even with external force can now also be opened or closed.

[0017] (2) The lubricating sheath of the present utility model uses waste galvanized pipes, and the lubricant uses waste lubricating oil, saving costs.

[0018] (3) The present utility model greatly saves the maintenance and replacement costs of the rising stem gate valve damage.

[0019] (4) The present utility model reduces the labor intensity of the operating workers and reduces the potential hazards of the safe production and long-term operation of the device.

[0020] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and implement it according to the content of the specification, the following takes the preferred embodiment of the present utility model and combines with the attached drawings to describe in detail as follows. Description of the drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a structural schematic diagram of the present utility model.

[0023] In the figure: 1, lock nut; 2, lubricating sheath; 3, filling port; 4, threaded valve stem; 5, rising stem gate valve body. Specific embodiments

[0024] The following will combine the drawings in the embodiments of the present utility model to clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts belong to the scope of protection of the present utility model.

[0025] Example 1:

[0026] According to Figure 1 A rising stem gate valve with a lubricating sheath as shown, at least comprising a rising stem gate valve body 5; at least a threaded valve stem 4 is connected to the center of the rising stem gate valve body 5, a locking nut 1 is connected to the upper part of the threaded valve stem 4, and the threaded valve stem 4 above the locking nut 1 forms a valve rising stem; a lubricating sheath 2 is further included; the lubricating sheath 2 is sleeved on the valve rising stem, and its bottom end is fixedly connected to the locking nut 1.

[0027] During actual use, the lower end of the lubricating sheath 2 is welded to the upper surface of the locking nut 1. Before the fabricated lubricating sheath 2 is sleeved, the oil stains and sundries on the valve stem need to be cleaned up.

[0028] Using the utility model to perform lubrication protection treatment on the rising stem gate valve, a valve that is heavy to switch and requires tools can be easily opened or closed with both hands; a valve that was originally difficult to open and close with external force can also be easily opened or closed. The utility model greatly saves the maintenance and replacement costs of the damaged rising stem gate valve. The utility model reduces the labor intensity of the operator for valve maintenance and operation, reduces the potential hazards of the device for safe production and long-term operation, and makes the working environment clean and hygienic, effectively preventing the direct contact of the lubricating oil with dust, sand and gravel, increasing the service life of the lubricating oil, and reducing the loss of the lubricating oil grease.

[0029] Example 2:

[0030] According to Figure 1 A rising stem gate valve with a lubricating sheath as shown, the difference from Example 1 is that: the lubricating sheath 2 is a columnar hollow tube with a sealed upper end face and an open lower end, and a filling port 3 is opened on its top surface, and a sealing cover is connected to the filling port 3; the open lower end is fixedly connected to the upper top surface of the locking nut 1.

[0031] Furthermore, the diameter of the filling port 3 is 2 - 3 mm.

[0032] During actual use, when the lubricating sheath 2 adopts the above technical solution, it can not only conveniently achieve the functions of protection and lubrication, but also be simply processed.

[0033] During specific use, the lubricating sheath 2 is screwed onto the threaded valve stem 4 through the locking nut 1, and the nameplate on the rising stem gate valve body 5 can be used as a gasket to install the lubricating sheath 2 to prevent the leakage of the lubricating oil. Then, lubricant is filled into the lubricating sheath 2 through the filling port 3, and after filling, the sealing cover on the filling port 3 is tightened.

[0034] The design of the filling port 3 makes it more convenient to fill the lubricant.

[0035] The diameter of the filling port 3 is designed to be 2-3 mm. While meeting the requirement of convenient lubricant filling, the filling port 3 is also easy to seal.

[0036] The sealing cover in this embodiment uses a rubber plug.

[0037] Embodiment Three:

[0038] According to Figure 1 A rising-stem gate valve with a lubricating sheath as shown, the difference from Embodiment Two is that: the lubricating sheath 2 is a hollow cylinder; the inner diameter of the lubricating sheath 2 is larger than the outer diameter of the valve's rising stem and not larger than the outer diameter of the lock nut 1.

[0039] In actual use, with the above technical solution for the lubricating sheath 2, it will not affect the normal operation of the threaded valve stem 4 due to the setting of the lubricating sheath 2, and it ensures the possibility and stability of the connection with the lock nut 1.

[0040] Embodiment Four:

[0041] According to Figure 1 A rising-stem gate valve with a lubricating sheath as shown, the difference from Embodiment One is that: the height of the lubricating sheath 2 is not less than the height of the valve's rising stem when the lock nut 1 is tightened.

[0042] Furthermore, the height of the lubricating sheath 2 is 1 cm higher than the height of the valve's rising stem.

[0043] In actual use, the height of the lubricating sheath 2 being not less than the height of the valve's rising stem when the lock nut 1 is tightened ensures the normal working state of the threaded valve stem 4. The design that the height of the lubricating sheath 2 is 1 cm higher than the height of the valve's rising stem can not only ensure the normal operation of the threaded valve stem 4, but also will not occupy too much space due to the setting of the lubricating sheath 2 and affect the operation and use of other related equipment.

[0044] Embodiment Five:

[0045] According to Figure 1 A rising-stem gate valve with a lubricating sheath as shown, the difference from Embodiment One is that: the lubricating sheath 2 uses a galvanized pipe.

[0046] Furthermore, the galvanized pipe used is a waste galvanized pipe.

[0047] In actual use, using a galvanized pipe for the lubricating sheath 2 gives it good corrosion resistance and extends the service life of the lubricating sheath 2.

[0048] The utilization of waste galvanized pipes turns waste into treasure, achieving waste utilization and saving the production cost.

[0049] In specific applications, the inner wall of the waste galvanized pipe used must be smooth and free of debris.

[0050] Example Six:

[0051] According to Figure 1 a rising stem gate valve with a lubricating sheath as shown, the difference from Example One is that: lubricant is filled in the lubricating sheath 2.

[0052] Furthermore, the lubricant filled in the lubricating sheath 2 is waste lubricating oil; the liquid level height of the lubricant filling is 1 / 2 or 2 / 3 of the height of the lubricating sheath 2.

[0053] During actual use, after the lubricating sheath 2 is installed, a syringe is used to fill the lubricant into the lubricating sheath 2 to soak and lubricate the threaded valve stem 4, and finally the filling port is sealed.

[0054] The liquid level height of the lubricant filling is 1 / 2 or 2 / 3 of the height of the lubricating sheath 2. In the closed or open state of the rising stem gate valve, the threaded valve stem 4 is always under the protection of the lubricating oil. After the threaded valve stem 4 in the rising stem gate valve is subjected to sealing lubrication protection treatment, the accumulation of sludge and dust on the threaded valve stem 4 is reduced, and it always remains smooth and clean, enabling the rising stem gate valve to be easily opened or closed; for valves that have been used for a long time and cannot be opened or closed even with external force, they can also be easily opened or closed.

[0055] The lubricant filled in the lubricating sheath 2 uses waste lubricating oil, which saves the use cost on the one hand, and at the same time, also saves the cost of hazardous waste treatment.

[0056] In specific applications, the waste lubricating oil should not contain water and impurities, etc.

[0057] Without conflict, those skilled in the art can combine the relevant technical features in the above examples according to the actual situation to achieve the corresponding technical effects. The specific combination situations are not elaborated here one by one.

[0058] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indication also changes accordingly.

[0059] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one of such features.

[0060] The above are only the preferred embodiments of the present utility model. The present utility model will not be limited to these embodiments shown herein, but rather should be accorded the broadest scope consistent with the principles and novel features disclosed herein. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A rising stem gate valve with a lubricating sleeve, comprising at least a rising stem gate valve body (5); a threaded valve stem (4) is connected at least at the center of the rising stem gate valve body (5); a locking nut (1) is connected to the upper part of the threaded valve stem (4); the threaded valve stem (4) above the locking nut (1) forms a valve rising stem; characterized in that: It also includes a lubricating sleeve (2); the lubricating sleeve (2) is sleeved on the rising stem of the valve, and the bottom end of the lubricating sleeve (2) is fixedly connected to the locking nut (1); The lubricating sleeve (2) is a cylindrical hollow tube with a sealed upper end and an open lower end, and a filling port (3) is provided on the top surface thereof, and a sealing cover is connected to the filling port (3); the open lower end is fixedly connected to the upper top surface of the locking nut (1); The diameter of the filling port (3) is 2 to 3 mm; The height of the liquid level of the lubricant is 1 / 2 or 2 / 3 of the height of the lubricating sleeve (2); when the rising stem valve is closed or open, the threaded valve stem (4) is always protected by the lubricating oil.

2. A rising stem gate valve with a lubricating sleeve as claimed in claim 1, characterized in that: The lubricating sleeve (2) is a hollow cylinder; the inner diameter of the lubricating sleeve (2) is larger than the outer diameter of the valve stem, but not larger than the outer diameter of the locking nut (1).

3. A rising stem gate valve with a lubricating sleeve as claimed in claim 1, characterized in that: The height of the lubricating sleeve (2) is not less than the height of the rising stem of the valve when the locking nut (1) is in a tightened state.

4. A rising stem gate valve with a lubricating sleeve as claimed in claim 2, characterized in that: The height of the lubricating sleeve (2) is 1 cm higher than the height of the valve rising stem.

5. A rising stem gate valve with a lubricating sleeve as claimed in claim 1, characterized in that: The lubricating sheath (2) is made of a galvanized pipe.

6. A rising stem gate valve with a lubricating sleeve as claimed in claim 5, characterized in that: The galvanized pipe is a waste galvanized pipe.

7. A rising stem gate valve with a lubricating sleeve as claimed in claim 1, characterized in that: The lubricating sleeve (2) is filled with lubricant.

8. A rising stem gate valve with a lubricating sleeve as claimed in claim 7, characterized in that: The lubricant filled into the lubricating sleeve (2) is waste lubricating oil.

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