High-strength high-temperature-resistant locking gate valve with opening indication

Abstract

The utility model relates to the technical field of valves, in particular to a high-strength high-temperature-resistant locking gate valve with an opening indication function. Comprising a valve body, a valve cover fixedly arranged on the valve body, a fluid channel formed in the valve body, a valve plate arranged in the valve body and used for sealing the fluid channel, and an avoiding channel formed in the valve body, used for enabling the valve plate to slide upwards to open the fluid channel and matched with the valve plate to prevent the valve plate from rotating. The valve rod is rotatably arranged between the valve cover and the valve body, one end of the valve rod is located in the valve body, the other end of the valve rod is located outside the valve cover, the rotating thread is formed in the valve rod, the fixing nut is arranged on the valve plate and matched with the rotating thread, and the receding hole is formed in the valve body and matched with the valve rod. And an opening indicating device which is used for displaying the opening and is convenient for a user to adjust is also arranged between the valve rod and the valve cover.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, especially high strength high temperature resistant with opening degree indication locking gate valve. BACKGROUND

[0002] Gate valve is a kind of valve plate is gate valve, the movement direction of valve plate is perpendicular to fluid direction, gate valve is generally divided into clear rod gate valve and dark rod gate valve, wherein, clear rod gate valve is that valve plate and valve rod are relative to valve body, make linear motion in the axial direction of valve rod, and dark rod gate valve is that valve plate is relative to valve body, make linear motion in the axial direction of valve rod, and valve rod does not rise and fall, since the valve rod of dark rod gate valve is always hidden in valve body, therefore, compared with clear rod gate valve, it has the characteristics of saving space, but, this also leads to the difficulty in judging the opening degree of dark rod gate valve and the opening and closing state, and misjudgment is easily caused to user, and waterway safety is influenced. SUMMARY

[0003] Therefore, in view of the above problems, the utility model provides high strength high temperature resistant with opening degree indication locking gate valve.

[0004] To achieve the above object, the technical scheme of the utility model provides high strength high temperature resistant with opening degree indication locking gate valve, including valve body, the valve cover fixedly arranged on the valve body, the fluid passage arranged in the valve body, the valve plate arranged in the valve body for sealing the fluid passage, the avoiding passage arranged on the valve body for the valve plate to slide upward and open the fluid passage and matched with the valve plate to avoid its rotation, the valve rod rotatably arranged between the valve cover and the valve body and one end located in the valve body and the other end located outside the valve cover, the rotating screw thread arranged on the valve rod, the fixed nut matched with the rotating screw thread and arranged on the valve plate, the avoiding hole matched with the valve rod and arranged on the valve body, and the opening degree indication device for showing the opening degree and facilitating user to adjust is further arranged between the valve rod and the valve cover.

[0005] Further improvement is that the opening degree indication device includes the nut sleeve fixedly arranged on the valve cover through the positioning device and the indication screw rod locked in the nut sleeve, and the driving device is arranged between the indication screw rod and the valve rod.

[0006] Further improvement is that the positioning device includes the limiting seat arranged on the nut sleeve, the limiting seat is hexagonal, and the positioning groove matched with the nut sleeve and the limiting seat is arranged on the valve cover.

[0007] Further improvement is that the driving device includes the first key groove arranged on the valve rod, the first gear sleeved on the valve rod, the second key groove arranged on the first gear, the connecting key arranged between the first key groove and the second key groove, the clamp groove arranged on the valve rod, the clamp arranged in the clamp groove, and the second gear matched with the first gear is arranged on the indication screw rod through the limiting device.

[0008] Further improvement is that the limiting device comprises a limiting slot formed on the indicating screw, the second gear is sleeved on the indicating screw, the second gear is further provided with a limiting block matched with the limiting slot, the first gear is flush with the second gear, and the first gear and the clamp are further provided with a pressing plate larger in size than the first gear for preventing the second gear from moving upward along the indicating screw.

[0009] Further improvement is that the valve body is further provided with connecting flanges on both sides for facilitating connection with water conveying pipes.

[0010] Further improvement is that the valve cover is further provided with an anti-rust device.

[0011] Further improvement is that the anti-rust device comprises a protective ring arranged on the valve cover and higher in height than the valve rod outside the valve cover, and a protective cover arranged on the protective ring.

[0012] Further improvement is that the valve body is provided with a first protective layer, and the valve plate is provided with a second protective layer.

[0013] Further improvement is that the valve plate has a certain slope, and the valve body is formed with a guide slot matched with the valve plate for enhancing sealing performance and guiding performance.

[0014] The high-strength high-temperature-resistant lockable gate valve with opening degree indication has the advantages that:

[0015] The high-strength high-temperature-resistant lockable gate valve with opening degree indication has the advantages that: BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a front view of the high-strength high-temperature-resistant lockable gate valve with opening degree indication;

[0017] Fig. 2 It is an enlarged view of the A part of the high-strength high-temperature-resistant lockable gate valve with opening degree indication;

[0018] Fig. 3 It is a sectional view of the hexagonal opening and closing key of the high-strength high-temperature-resistant lockable gate valve with opening degree indication;

[0019] In the diagram: 101, Valve body; 102, Valve cover; 103, Fluid passage; 104, Valve plate; 105, Clearance passage; 106, Valve stem; 107, Rotating thread; 108, Fixing nut; 109, Clearance hole; 110, Nut sleeve; 111, Indicating screw; 112, Limit seat; 113, Positioning groove; 114, First keyway; 115, Second keyway; 116, Connecting key; 117, Clamp groove; 118, Clamp; 119, Limit groove; 120, Limit block; 121, Pressure plate; 122, Connecting flange; 123, Protective ring; 124, Protective cover; 125, First protective layer; 126, Second protective layer; 127, Guide groove; 128, Hexagonal locking block; 129, Hexagonal opening and closing key; 130, Scale. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0021] like Figs. 1-3 As shown, a high-strength, high-temperature resistant gate valve with opening indicator includes a valve body 101, a valve cover 102 fixedly mounted on the valve body 101, a fluid passage 103 opened within the valve body 101, a valve plate 104 installed within the valve body 101 for sealing the fluid passage 103, a clearance passage 105 opened on the valve body 101 for the valve plate 104 to slide upward to open the fluid passage 103 and to match the valve plate 104 to prevent its rotation, a valve stem 106 rotatably mounted between the valve cover 102 and the valve body 101 with one end inside the valve body 101 and the other end outside the valve cover 102, a rotating thread 107 opened on the valve stem 106, a fixing nut 108 on the valve plate 104 that matches the rotating thread 107, and a clearance hole 109 opened on the valve body 101 that matches the valve stem 106. An opening indicator device for displaying the opening degree is also provided between the valve stem 106 and the valve cover 102 for user adjustment.

[0022] To facilitate user observation of valve opening, the opening indicator includes: a nut sleeve 110 fixedly mounted on valve cover 102 by a positioning device, an indicator screw 111 locked inside the nut sleeve 110, and a driving device provided between the indicator screw 111 and valve stem 106.

[0023] To facilitate the installation of the nut sleeve 110, the positioning device includes: a limiting seat 112 disposed on the nut sleeve 110, the limiting seat 112 being hexagonal, and a positioning groove 113 provided on the valve cover 102 that matches the nut sleeve 110 and the limiting seat 112.

[0024] In order to make the indicating screw 111 lift along with the valve rod 106 rotating, the driving device comprises: a first key groove 114 opened on the valve rod 106, a first gear sleeved on the valve rod 106, a second key groove 115 opened on the first gear, a connecting key 116 arranged between the first key groove 114 and the second key groove 115, a clamp groove 117 opened on the valve rod 106, a clamp 118 arranged in the clamp groove 117, and a second gear matched with the first gear arranged on the indicating screw 111 through a limiting device.

[0025] In order to make the second gear drive the indicating screw 111 to rotate without moving up and down along with the indicating screw 111, the limiting device comprises: a limiting groove 119 opened on the indicating screw 111, the second gear sleeved on the indicating screw 111, and a limiting block 120 matched with the limiting groove 119 arranged on the second gear, the first gear and the second gear being flush in height, and the first gear and the clamp 118 being further provided with a pressing plate 121 with a size greater than the first gear for preventing the second gear from moving up along with the indicating screw 111.

[0026] In order to facilitate the installation of the valve, the valve body 101 is further provided with a connecting flange 122 on both sides for facilitating the connection of water conveying pipes.

[0027] In order to prevent the opening and closing of the valve from being damaged by rainwater and sundries, the valve cover 102 is further provided with an anti-rust device, the anti-rust device comprising: a protective ring 123 arranged on the valve cover 102 and having a height higher than the valve rod 106 outside the valve cover 102, and a protective cover 124 arranged on the protective ring 123.

[0028] In order to enhance the service life of the valve, the valve body 101 is provided with a first protective layer 125, and the valve plate 104 is provided with a second protective layer 126, and the first protective layer 125 and the second protective layer 126 are both rubber layers.

[0029] In order to improve the sealing performance and facilitate the lifting of the valve plate 104, the valve plate 104 has a certain slope, and the valve body 101 is provided with a guide groove 127 matched with the valve plate 104 for enhancing the sealing performance and the guiding performance.

[0030] In order to improve the safety, the valve rod 106 is provided with a hexagonal clamp block 128, and the user can use a corresponding hexagonal opening and closing key 129 or use a wrench to rotate, thereby reducing the risk of misoperation.

[0031] In order to facilitate observation, the protective ring 123 is further provided with a scale 130 matched with the indicating screw 111.

[0032] Working principle: when installing, first install the nut sleeve 110 in the limiting groove 119, then fix the valve cover 102, then lock the indicating screw 111 in the nut sleeve 110, then sleeve the second gear on the indicating screw 111, then install the first gear, cover the pressing plate 121, finally position the first gear and the pressing plate 121 through the clamp 118, and then it can be used;

[0033] When using, the user twists the valve rod 106, the valve rod 106 drives the first gear to rotate, and at the same time drives the second gear to rotate, and then the indicating screw 111 rotates in the nut sleeve 110 to start up and down, and because of the existence of the pressing plate 121, the limiting groove 119 and the limiting strip, the second gear will not be driven by the indicating screw 111, but will be limited in the position engaged with the first gear;

[0034] Twist the valve rod 106, and at the same time, the rotating thread 107 cooperates with the fixed nut 108, under the limiting of the guide groove 127 and the avoiding channel 105, drives the valve plate 104 to rise and fall, opens and closes the valve;

[0035] The two are combined, so that the user can intuitively see the opening and closing state of the valve.

[0036] The above shows and describes the basic principle and main features of the utility model and its advantages, and those skilled in the art should understand that the utility model is not limited by the above examples, the above examples and descriptions are only to illustrate the principle of the utility model, without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, these changes and improvements all fall within the scope of the utility model claimed, the scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-strength high-temperature-resistant gate valve with opening degree indication, comprising a valve body, a valve cover fixedly arranged on the valve body, a fluid passage arranged in the valve body, a valve plate arranged in the valve body for sealing the fluid passage, a avoiding passage arranged on the valve body for the valve plate to slide upward to open the fluid passage and match the valve plate to avoid rotation, a valve rod rotatably arranged between the valve cover and the valve body, one end of the valve rod being located in the valve body and the other end being located outside the valve cover, a rotating thread arranged on the valve rod, a fixing nut arranged on the valve plate and matching the rotating thread, and an avoiding hole arranged on the valve body and matching the valve rod, characterized in that: The valve stem and the valve cover are further provided with an opening degree indicating device for showing the opening degree and facilitating the user to adjust.

2. The high-strength, high-temperature resistant, open-position indicating, locked- shutter gate valve of claim 1, wherein: The opening degree indicating device comprises a nut sleeve fixed on the valve cover by a positioning device, and an indicating screw rod locked in the nut sleeve, and a driving device is arranged between the indicating screw rod and the valve stem.

3. The high-strength, high-temperature resistant, open-position indicating, locked- shutter gate valve of claim 2, wherein: The positioning device comprises a limiting seat arranged on the nut sleeve, and the limiting seat is hexagonal, and the valve cover is provided with a positioning groove matched with the nut sleeve and the limiting seat.

4. The high-strength, high-temperature resistant, open-position indicating, locked- shutter gate valve of claim 2, wherein: The driving device comprises a first key groove arranged on the valve stem, a first gear arranged on the valve stem, a second key groove arranged on the first gear, a connecting key arranged between the first key groove and the second key groove, a clamp groove arranged on the valve stem, and a clamp arranged in the clamp groove, and the indicating screw rod is provided with a second gear matched with the first gear by a limiting device.

5. The high-strength, high-temperature resistant, open-position indicating, locked- shutter gate valve of claim 4, wherein: The limiting device comprises a limiting groove arranged on the indicating screw rod, the second gear is arranged on the indicating screw rod, the second gear is further provided with a limiting block matched with the limiting groove, the first gear is flush with the second gear, and the first gear and the clamp are further provided with a pressing plate with a size larger than the first gear for preventing the second gear from moving upward with the indicating screw rod.

6. The high-strength, high-temperature resistant, open-position indicating, locked- shutter gate valve of claim 1, wherein: The valve body is further provided with a connecting flange for facilitating the connection of a water conveying pipe.

7. The high-strength, high-temperature resistant, open-position indicating, locked- shutter gate valve of claim 1, wherein: The valve cover is further provided with an anti-rust device.

8. The high-strength, high-temperature resistant, open-position indicating, locked- shutter gate valve of claim 7, wherein: The anti-rust device comprises a protective ring arranged on the valve cover and having a height higher than the valve stem, and a protective cover arranged on the protective ring.

9. The high-strength, high-temperature resistant, open-position indicating, locked- shutter gate valve of claim 1, wherein: The valve body is provided with a first protective layer, and the valve plate is provided with a second protective layer.

10. The high-strength, high-temperature resistant, open-position indicating, locked- shutter gate valve of claim 1, wherein: The valve plate has a certain slope, and the valve body is provided with a guide groove matched with the valve plate for enhancing the sealing performance and the guiding performance.

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