Valve rod quenching device

Abstract

The utility model relates to the technical field of quenching devices, in particular to a valve rod quenching device which comprises a bottom plate, a heating box is mounted on the left side of the upper surface of the bottom plate, and a water cooling box is fixedly connected to the right side of the upper surface of the bottom plate. When the valve rod quenching device works, a valve rod is placed in the placing basket, the motor drives the screw rod to rotate, the nut plate reciprocates downwards and upwards along the outer side wall of the screw rod, and the nut plate drives the connecting block and the placing basket to move, so that the valve rod is immersed in cold water in the water cooling box and moves up and down in the cold water for quenching and cooling; the refrigeration piece guarantees that cold water is in a low-temperature state, the valve rod moves up and down in the cold water, the situation that the valve rod is located at a single position and can make contact with the cold water at different positions is avoided, and the situation that the quenching effect is affected due to the fact that the temperature of the cold water around the valve rod rises too fast is prevented. Cold water is in a flowing state, uneven temperature of the cold water is avoided, and the quenching effect of the valve rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of quenching devices, in particular to a valve stem quenching device. Background Technique

[0002] The valve stem is an important component of the valve and is used for transmission. It is connected to the actuator or handle at the upper part and directly drives the valve core to move or rotate at the lower part to realize the opening, closing or regulating function of the valve. During the opening and closing process of the valve, the valve stem is not only a moving part and a force-bearing part, but also a sealing part. At the same time, it is subjected to the impact and corrosion of the medium and friction with the packing. Therefore, when selecting the valve stem material, it is necessary to ensure that it has sufficient strength, good impact toughness, anti-scuffing property and corrosion resistance at the specified temperature. The valve stem is a vulnerable part, and attention should also be paid to the machining performance and heat treatment performance of the material when selecting it;

[0003] Quenching is a processing step in the valve stem processing process, which is used to improve the hardness, wear resistance and fatigue resistance of the valve stem. When the valve stem is cooled by water with the help of a valve stem quenching device, the valve stem is often put into a cold water pool. The temperature of the cold water around the valve stem will rise rapidly, and the temperature of the cold water farther away from the valve stem will rise more slowly, resulting in uneven cold water temperature and affecting the quenching effect of the valve stem; For this reason, a valve stem quenching device is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a valve stem quenching device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A valve stem quenching device, including a bottom plate, a heating box is installed on the left side of the upper surface of the bottom plate, a water cooling box is fixedly connected to the right side of the upper surface of the bottom plate, a refrigeration sheet is installed on the right side wall of the water cooling box, a fixing frame is fixedly connected to the left side of the upper surface of the water cooling box, a screw rod is rotatably connected between the top wall of the inner side wall of the fixing frame and the inner bottom wall of the water cooling box through a bearing, a motor is installed on the upper surface of the fixing frame, the top end of the screw rod penetrates through the upper surface of the fixing frame and is fixedly connected to one end of the output shaft of the motor, a nut plate is threadedly connected to the outer side wall of the motor, a connecting block is fixedly connected to the right side wall of the nut plate, a placing basket is fixedly connected to the right side wall of the connecting block, a rotating column is rotatably connected to the middle of the inner bottom wall of the water cooling box through a bearing, a propeller is fixedly connected to the top end of the rotating column, transmission wheels are fixedly connected to the bottom of the outer side wall of the screw rod and the bottom of the outer side wall of the rotating column respectively, and a transmission chain is arranged between the outer side walls of the two transmission wheels, and the transmission chain is meshed with the transmission wheels.

[0006] As a further preference of this technical solution: Two positioning rods are symmetrically and fixedly connected between the top wall of the inner side wall of the fixing frame and the inner bottom wall of the water cooling box, and the positioning rods are slidably connected to the nut plate.

[0007] As a further preference of this technical solution: A water inlet pipe is communicated with the top of the rear surface of the water cooling box.

[0008] As a further preference of this technical solution: A drain pipe is communicated with the bottom of the rear surface of the water cooling box, and a valve is installed on the outer side wall of the drain pipe.

[0009] As a further preference of this technical solution: A control panel is installed on the front surface of the water cooling box, and the electrical output terminals of the control panel are respectively electrically connected to the electrical input terminals of the motor and the refrigerating sheet through wires.

[0010] As a further preference of this technical solution: The lower surface of the bottom plate is evenly welded with support feet.

[0011] As a further preference of this technical solution: Rubber pads are bonded to the bottoms of the support feet.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] When the present utility model works, the valve rod is placed in the placement basket. The motor drives the screw rod to rotate, so that the nut plate reciprocates up and down along the outer side wall of the screw rod. The nut plate drives the connecting block and the placement basket to move, so that the valve rod is immersed in the cold water in the water cooling box and moves up and down in the cold water for quenching and cooling. The refrigerating sheet ensures that the cold water is in a low temperature state, and the valve rod moves up and down in the cold water, avoiding being in a single position, and can contact the cold water at different positions, preventing the temperature of the cold water around the valve rod from rising too fast and affecting the quenching effect. When the screw rod rotates, it drives the transmission wheel, the transmission chain, the rotating column and the propeller to rotate, and the propeller stirs the water flow to make the cold water in a flowing state, avoiding uneven temperature of the cold water and improving the quenching effect of the valve rod, which brings convenience to the processing of the valve rod. Description of the Drawings

[0014] Figure 1 It is the front view structural schematic diagram of the present utility model;

[0015] Figure 2 It is the structural schematic diagram of the connecting block and the placement basket in the present utility model;

[0016] Figure 3 It is the sectional structural schematic diagram of the water cooling box from a certain perspective in the present utility model;

[0017] Figure 4 It is the sectional structural schematic diagram of the water cooling box from another perspective in the present utility model.

[0018] In the figure: 1, bottom plate; 2, heating box; 3, water cooling box; 4, fixing frame; 5, screw rod; 6, motor; 7, nut plate; 8, connecting block; 9, placing basket; 10, rotating column; 11, propeller; 12, driving wheel; 13, driving chain; 14, refrigerating sheet; 15, positioning rod; 16, water adding pipe; 17, drain pipe; 18, valve; 19, control panel; 20, support leg; 21, rubber pad. Detailed implementation manner

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as limiting the present application. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0020] In the description of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0021] Please refer to Figures 1-4, the present utility model provides a technical solution: a valve stem quenching device, including a bottom plate 1. On the left side of the upper surface of the bottom plate 1, a heating box 2 is installed. On the right side of the upper surface of the bottom plate 1, a water cooling box 3 is fixedly connected. On the right side wall of the water cooling box 3, a refrigeration sheet 14 is installed. On the left side of the upper surface of the water cooling box 3, a fixing frame 4 is fixedly connected. Between the top wall of the inner side wall of the fixing frame 4 and the inner bottom wall of the water cooling box 3, a screw rod 5 is rotatably connected through a bearing. On the upper surface of the fixing frame 4, a motor 6 is installed. The top end of the screw rod 5 penetrates through the upper surface of the fixing frame 4 and is fixedly connected to one end of the output shaft of the motor 6. A nut plate 7 is threadedly connected to the outer side wall of the motor 6. On the right side wall of the nut plate 7, a connecting block 8 is fixedly connected. On the right side wall of the connecting block 8, a placing basket 9 is fixedly connected. In the middle of the inner bottom wall of the water cooling box 3, a rotating column 10 is rotatably connected through a bearing. At the top end of the rotating column 10, a propeller 11 is fixedly connected. At the bottom of the outer side wall of the screw rod 5 and at the bottom of the outer side wall of the rotating column 10, transmission wheels 12 are fixedly connected respectively. Between the outer side walls of the two transmission wheels 12, a transmission chain 13 is provided. The transmission chain 13 is meshed and connected with the transmission wheels 12; The heating box 2 adopts the existing technology, including parts such as a box body structure, heating elements, a ventilation system, and a control system, all of which adopt the existing mature technology and will not be elaborated here too much; Place the valve stem in the placing basket 9. Drive the screw rod 5 to rotate through the motor 6, so that the nut plate 7 reciprocates downward and upward along the outer side wall of the screw rod 5. The nut plate 7 drives the connecting block 8 and the placing basket 9 to move, so that the valve stem is immersed in the cold water in the water cooling box 3 and moves up and down in the cold water for quenching and cooling. The refrigeration sheet 14 ensures that the cold water is in a low-temperature state, and the valve stem moves up and down in the cold water, avoiding being in a single position, and can contact the cold water at different positions, preventing the temperature of the cold water around the valve stem from rising too fast and affecting the quenching effect. When the screw rod 5 rotates, it drives the transmission wheels 12, the transmission chain 13, the rotating column 10 and the propeller 11 to rotate. The propeller 11 stirs the water flow to make the cold water in a flowing state, avoiding uneven temperature of the cold water.

[0022] In this embodiment, specifically: between the top wall of the inner side wall of the fixing frame 4 and the inner bottom wall of the water cooling box 3, two positioning rods 15 are symmetrically and fixedly connected. The positioning rods 15 are slidably connected with the nut plate 7; The nut plate 7 slides on the outer side wall of the positioning rod 15 to prevent the nut plate 7 from rotating along with the screw rod 5.

[0023] In this embodiment, specifically: at the top of the rear surface of the water cooling box 3, a water adding pipe 16 is communicated; Cold water can be added to the water cooling box 3 by means of the water adding pipe 16.

[0024] In this embodiment, specifically: at the bottom of the rear surface of the water cooling box 3, a drain pipe 17 is communicated. On the outer side wall of the drain pipe 17, a valve 18 is installed; Open the valve 18, and the cold water will quickly drain along the drain pipe 17.

[0025] In this embodiment, specifically: a control panel 19 is installed on the front surface of the water cooling box 3, and the electrical output terminals of the control panel 19 are electrically connected to the electrical input terminals of the motor 6 and the refrigeration sheet 14 through wires respectively; this is convenient for controlling the working states of the motor 6 and the refrigeration sheet 14.

[0026] In this embodiment, specifically: support feet 20 are uniformly welded to the lower surface of the bottom plate 1; this is convenient for supporting the bottom plate 1.

[0027] In this embodiment, specifically: a rubber pad 21 is adhered to the bottom of the support foot 20; the setting of the rubber pad 21 can increase the anti-slip performance of the support foot 20.

[0028] The working principle of the present utility model is: Place the valve stem in the placement basket 9, drive the screw rod 5 to rotate through the motor 6, so that the nut plate 7 reciprocates up and down along the outer side wall of the screw rod 5, the nut plate 7 drives the connecting block 8 and the placement basket 9 to move, so that the valve stem is immersed in the cold water in the water cooling box 3 and moves up and down in the cold water for quenching and cooling. The refrigeration sheet 14 ensures that the cold water is in a low temperature state, and the valve stem moves up and down in the cold water, avoiding being in a single position, and can contact the cold water at different positions, preventing the temperature of the cold water around the valve stem from rising too fast and affecting the quenching effect. When the screw rod 5 rotates, it drives the transmission wheel 12, the transmission chain 13, the rotating column 10 and the propeller 11 to rotate. The propeller 11 stirs the water flow to make the cold water in a flowing state, avoiding uneven cold water temperature and improving the quenching effect of the valve stem, which brings convenience to the processing of the valve stem.

[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A valve stem quenching device, characterized in that: It includes a bottom plate (1). On the left side of the upper surface of the bottom plate (1), a heating box (2) is installed. On the right side of the upper surface of the bottom plate (1), a water cooling box (3) is fixedly connected. On the right side wall of the water cooling box (3), a refrigeration sheet (14) is installed. On the left side of the upper surface of the water cooling box (3), a fixing frame (4) is fixedly connected. Between the top wall of the inner side wall of the fixing frame (4) and the inner bottom wall of the water cooling box (3), a screw rod (5) is rotatably connected through a bearing. On the upper surface of the fixing frame (4), a motor (6) is installed. The top end of the screw rod (5) penetrates through the upper surface of the fixing frame (4) and is fixedly connected to one end of the output shaft of the motor (6). A nut plate (7) is threadedly connected to the outer side wall of the motor (6). On the right side wall of the nut plate (7), a connecting block (8) is fixedly connected. On the right side wall of the connecting block (8), a placing basket (9) is fixedly connected. In the middle of the inner bottom wall of the water cooling box (3), a rotating column (10) is rotatably connected through a bearing. At the top end of the rotating column (10), a propeller (11) is fixedly connected. At the bottom of the outer side wall of the screw rod (5) and at the bottom of the outer side wall of the rotating column (10), transmission wheels (12) are fixedly connected respectively. Between the outer side walls of the two transmission wheels (12), a transmission chain (13) is provided. The transmission chain (13) is meshed and connected with the transmission wheels (12).

2. The valve stem quenching device according to claim 1, wherein: Between the top wall of the inner side wall of the fixing frame (4) and the inner bottom wall of the water cooling box (3), two positioning rods (15) are symmetrically and fixedly connected. The positioning rods (15) are slidably connected with the nut plate (7).

3. The valve stem quenching device according to claim 2, characterized in that: At the top of the rear surface of the water cooling box (3), a water adding pipe (16) is communicated.

4. The valve stem quenching device according to claim 3, wherein: At the bottom of the rear surface of the water cooling box (3), a drain pipe (17) is communicated. On the outer side wall of the drain pipe (17), a valve (18) is installed.

5. The valve stem quenching device according to claim 4, characterized in that: On the front surface of the water cooling box (3), a control panel (19) is installed. The electrical output terminals of the control panel (19) are electrically connected to the electrical input terminals of the motor (6) and the refrigeration sheet (14) respectively through wires.

6. The valve stem quenching device according to claim 5, characterized in that: On the lower surface of the bottom plate (1), supporting feet (20) are evenly welded.

7. The valve stem quenching device according to claim 6, characterized in that: At the bottom of the supporting feet (20), rubber pads (21) are adhered.

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