Anti-crack temperature control shunting regulating valve

Abstract

The utility model discloses an anti-crack temperature control shunt regulating valve which comprises a temperature control module and a regulating valve module. The temperature control module comprises a front valve body, a controller and a temperature sensor; the adjusting valve module comprises a rear valve body, a valve cover, a valve rod and a valve clack, an inlet runner, an outlet runner and a backflow runner are arranged in the rear valve body, a first overflowing opening is formed between the inlet runner and the outlet runner, and a second overflowing opening is formed between the inlet runner and the backflow runner; a first valve seat ring and a second valve seat ring are mounted on the first overflowing opening and the second overflowing opening respectively; the valve cover is installed on the upper portion of the valve body, the support is installed on the valve cover, the electric actuator is arranged on the support, the valve rod penetrates through the valve cover, the outer end of the valve rod is connected with the output end of the electric actuator, and the valve clack is arranged at the inner end of the valve rod. According to the utility model, the valve seat ring which is in sealing fit with the valve clack is detachably arranged in the flow channel, so that only the valve seat ring needs to be replaced when the valve seat ring is scratched and abraded, and the later maintenance cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a temperature-controlled shunt regulating valve with crack prevention. Background Technique

[0002] The temperature-controlled shunt regulating valve can control the piston of the shunt valve to rise and fall, so that the liquid that does not meet the temperature requirements flows out from the return outlet, and the liquid that meets the temperature requirements flows out from the qualified outlet and enters the next process. The temperature control is accurate, the shunt process does not require waiting, and the shunted liquid is uniformly processed, improving production efficiency.

[0003] The invention patent with the publication (announcement) number of CN106369191A discloses a temperature-controlled shunt regulating valve, which includes a main valve and a shunt valve. Along the liquid flow direction, the main valve is arranged before the shunt valve, and a temperature sensor is also arranged between the main valve and the shunt valve. It also includes a control center. The main valve, the shunt valve and the temperature sensor are connected to the control center through wires. Among them, the shunt regulating valve includes a piston and a connecting rod. The piston is fixed at the bottom end of the connecting rod, a magnet is arranged at the top end of the connecting rod, and an electromagnetic coil is arranged at the top end of the shunt regulating valve. Soft rubber plugs are arranged on both the upper and lower surfaces of the piston. When the piston reaches the upper and lower limit positions, it can effectively block the channel openings. This structure closes the corresponding channel by directly blocking the channel opening in the valve body with the piston. However, after long-term use, the inner wall of the flow port will more or less be scratched and worn by the fluid. At this time, the sealing performance will deteriorate, and only the whole valve body can be replaced to be reused, and its later maintenance cost is relatively high. Content of the Utility Model

[0004] The purpose of the utility model is to provide a temperature-controlled shunt regulating valve with crack prevention. By detachably arranging a valve seat ring for sealing cooperation with the valve flap in the flow channel, when the valve seat ring is scratched and worn, only the valve seat ring needs to be replaced, greatly reducing the later maintenance cost.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a temperature-controlled shunt regulating valve with crack prevention, including a temperature control module and a regulating valve module;

[0006] The temperature control module includes a front valve body, a controller and a temperature sensor. A temperature measurement flow channel is arranged in the rear valve body. The temperature sensor is arranged through the valve body, and the temperature measurement probe of the temperature sensor extends into the temperature measurement flow channel. The output end of the temperature sensor is electrically connected to the input end of the controller through a wire;

[0007] The regulating valve module includes a rear valve body, a valve cover, a valve stem and a valve flap. An inlet flow channel, an outlet flow channel and a reflux flow channel are provided in the rear valve body. A first flow-through port is provided between the inlet flow channel and the outlet flow channel, and a second flow-through port is provided between the inlet flow channel and the reflux flow channel. A first valve seat ring and a second valve seat ring are detachably mounted on the first flow-through port and the second flow-through port respectively; the valve cover is installed on the upper part of the valve body, a bracket is installed on the valve cover, an electric actuator is provided on the bracket, the input end of the electric actuator is electrically connected to the output end of the controller through a wire, the valve stem penetrates through the valve cover, and the outer end of the valve stem is linked to the output end of the electric actuator. The valve flap is arranged at the inner end of the valve stem. When the valve flap abuts against the first valve seat ring, the first flow-through port is closed and the second flow-through port is opened. When the valve flap abuts against the second valve seat ring, the first flow-through port is opened and the second flow-through port is closed;

[0008] The front valve body is detachably connected to the rear valve body so that the temperature measuring flow channel communicates with the inlet flow channel.

[0009] By adopting the above technical solution, the temperature sensor on the temperature control module monitors the temperature of the medium in the temperature measuring flow channel. At the same time, the temperature sensor transmits the detected temperature data to the controller. The controller sends a signal to the electric actuator of the regulating module according to the received temperature data, prompting the electric actuator to drive the valve stem to rise and fall, and then driving the valve flap to rise and fall. When the temperature in the temperature measuring flow channel meets the set requirements, the electric actuator drives the valve flap to descend through the valve stem, so that the valve flap abuts against the second valve seat ring, the first flow-through port is opened, the second flow-through port is closed, and the medium passes through the outlet flow channel. When the temperature in the temperature measuring flow channel does not meet the set requirements, the electric actuator drives the valve flap to rise through the valve stem, so that the valve flap abuts against the first valve seat ring, the first flow-through port is closed, the second flow-through port is opened, and the medium passes through the reflux channel. Among them, since both the first valve seat ring and the second valve seat ring are detachable, when any valve seat ring has scratches and wear due to fluid erosion, resulting in poor sealing performance, the valve seat ring can be directly replaced without replacing the entire valve body, which greatly reduces the later maintenance cost.

[0010] The present utility model is further arranged such that the first valve seat ring is threadedly connected to the first flow-through port, and the upper end of the first valve seat ring is provided with a first limiting flange extending outwardly. A first groove is provided at the position corresponding to the upper end of the first flow-through port on the inner wall of the valve body, and the first limiting flange abuts against the inner end of the first groove; the second valve seat ring is threadedly connected to the second flow-through port, and the lower end of the second valve seat ring is provided with a second limiting flange extending outwardly. A second groove is provided at the position corresponding to the lower end of the second flow-through port on the inner wall of the valve body, and the second limiting flange abuts against the inner end of the second groove.

[0011] By adopting the above technical solution, the first valve seat ring and the second valve seat ring are installed on their corresponding flow ports in a threaded manner, which makes disassembly and assembly very convenient.

[0012] The utility model is further configured such that a first sealing gasket is sandwiched between the first limiting flange and the inner end of the first groove, and a second sealing gasket is sandwiched between the second limiting flange and the inner end of the second groove.

[0013] By adopting the above technical solution, the sealing performance of the first valve seat ring and the second valve seat ring after installation can be improved.

[0014] The utility model is further configured such that a plurality of first operating grooves are distributed in a circumferential array on the upper end of the first valve seat ring, and a plurality of second operating grooves are distributed in a circumferential array on the lower end of the second valve seat ring.

[0015] By adopting the above technical solution, the operating groove can provide a fulcrum, which facilitates the rotation operation of the first valve seat ring and the second valve seat ring, thereby making it easier to disassemble and assemble.

[0016] The utility model is further configured such that a first annular groove with a C-shaped cross-sectional profile is provided at the lower end of the first valve seat ring, a first sealing ring is embedded in the first annular groove, and the lower end portion of the first sealing ring is exposed outside the first annular groove; a second annular groove with a C-shaped cross-sectional profile is provided at the upper end of the second valve seat ring, a second sealing ring is embedded in the second annular groove, and the upper end portion of the second sealing ring is exposed outside the second annular groove.

[0017] By adopting the above technical solution, when the valve disc and the corresponding valve seat ring are tightly pressed against each other, a hard and soft dual sealing effect is achieved, which can further improve the sealing performance when the corresponding flow port is closed.

[0018] The utility model is further configured such that the regulating valve module also includes a guide sleeve, the guide sleeve is arranged on the outer periphery of the valve stem, the outer periphery of the guide sleeve is provided with a support flange, the support flange is clamped between the valve cover and the valve body, and the support flange is also provided with pressure-stabilizing holes that pass through from top to bottom and are distributed in a circular array.

[0019] By adopting the above technical solution, providing a guide sleeve can improve the stability of the up and down movement of the valve stem.

[0020] The present utility model is further configured such that the valve stem includes an upper connecting rod, a connecting column, a lower connecting rod, an upper inner hexagonal stud, and a lower inner hexagonal stud. An upper slot and a lower slot are respectively provided at the upper and lower ends of the connecting column. The upper connecting rod and the lower connecting rod are respectively inserted into the upper slot and the lower slot. And a first through hole communicating with the upper slot and a second through hole communicating with the lower slot are radially formed in the side portion of the connecting column. A first screw hole corresponding to the first through hole is provided in the side portion of the upper connecting rod, and a second screw hole corresponding to the second through hole is provided on the lower connecting rod. The upper inner hexagonal stud passes through the first through hole and its inner end is screwed into the first screw hole, and the lower inner hexagonal stud passes through the second through hole and its inner end is screwed into the second screw hole.

[0021] By adopting the above technical solution, the valve stem adopts a segmented and spliceable structure, which is more conducive to the processing and production of the valve stem.

[0022] The present utility model is further configured such that a dust-proof cover is installed at the upper end of the front valve body. The dust-proof cover surrounds the temperature sensor, and the controller is arranged at the upper end of the dust-proof cover.

[0023] By adopting the above technical solution, the temperature sensor can be protected from dust and water, and its service life can be improved.

[0024] The present utility model is further configured such that anti-corrosion coatings are applied on the surfaces of the front valve body and the rear valve body.

[0025] By adopting the above technical solution, the front valve body and the rear valve body can be protected, achieving the effects of anti-corrosion and rust prevention, thereby preventing the generation of cracks on the surface of the valve body and improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0027] Figure 2 is a schematic installation structure diagram of the first valve seat ring and the second valve seat ring of the present utility model;

[0028] Figure 3 is a schematic assembly structure diagram of the valve stem of the present utility model.

[0029] In the figure: 1, temperature control module; 2, regulating valve module; 3, front valve body; 4, controller; 5, temperature sensor; 6, temperature measuring flow channel; 7, rear valve body; 8, valve cover; 9, valve stem; 10, valve flap; 11, inlet flow channel; 12, outlet flow channel; 13, return flow channel; 14, first flow-through port; 15, second flow-through port; 16, first valve seat ring; 17, second valve seat ring; 18, bracket; 19, electric actuator; 20, first limiting flange; 21, first groove; 22, second limiting flange; 23, second groove; 24, first gasket; 25, second gasket; 26, first operation groove; 27, second operation groove; 28, first annular groove; 29, first sealing ring; 30, second annular groove; 31, second sealing ring; 32, guide sleeve; 33, supporting flange; 34, voltage stabilizing hole; 35, upper connecting rod; 36, connecting column; 37, lower connecting rod; 38, upper internal hexagonal stud; 39, lower internal hexagonal stud; 40, upper slot; 41, lower slot; 42, first through hole; 43, second through hole; 44, first screw hole; 45, second screw hole; 46, dust cover. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. 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 shall fall within the protection scope of the present invention.

[0031] Embodiment: As shown in the attached Figures 1 to 3 The anti-crack temperature control and flow dividing regulating valve shown, the temperature control module includes a front valve body, a controller and a temperature sensor. A temperature measuring flow channel is provided in the rear valve body. The temperature sensor is disposed through the valve body, and the temperature measuring probe of the temperature sensor extends into the temperature measuring flow channel, that is, an installation screw hole is opened on the temperature measuring valve body, and the temperature sensor is threadedly connected to the installation screw hole. The output end of the temperature sensor is electrically connected to the input end of the controller through a wire;

[0032] Among them, the controller can adopt a Siemens controller, which is used to receive temperature signals, perform P / PI / PID operations, and output 0...10V control signals. Common models of Siemens controllers include RWD60\RWD62\RWD68\RLU236\RMZ730-B, etc. The temperature sensor adopts (immersion type temperature sensor).

[0033] The regulating valve module includes a rear valve body, a valve cover, a valve stem, and a valve flap. An inlet flow channel, an outlet flow channel, and a return flow channel are provided in the rear valve body. A first flow-through port is provided between the inlet flow channel and the outlet flow channel, and a second flow-through port is provided between the inlet flow channel and the return flow channel. A first valve seat ring and a second valve seat ring are detachably installed on the first flow-through port and the second flow-through port respectively; the valve cover is installed on the upper part of the valve body, a bracket is installed on the valve cover, an electric actuator is provided on the bracket, the input end of the electric actuator is electrically connected to the output end of the controller through a wire, the valve stem penetrates the valve cover, and the outer end of the valve stem is linked to the output end of the electric actuator. The valve flap is arranged at the inner end of the valve stem. When the valve flap abuts tightly against the first valve seat ring, the first flow-through port is closed and the second flow-through port is opened. When the valve flap abuts against the second valve seat ring, the first flow-through port is opened and the second flow-through port is closed;

[0034] The front valve body and the rear valve body are detachably connected together by bolts, so that the temperature measuring flow channel is communicated with the inlet flow channel.

[0035] The temperature sensor on the temperature control module monitors the temperature of the medium in the temperature measuring flow channel. At the same time, the temperature sensor transmits the detected temperature data to the controller. The controller sends a signal to the electric actuator of the regulating module according to the received temperature data, prompting the electric actuator to drive the valve stem to rise and fall, and then driving the valve flap to rise and fall. When the temperature in the temperature measuring flow channel meets the set requirements, the electric actuator drives the valve flap to descend through the valve stem, so that the valve flap abuts against the second valve seat ring, the first flow-through port is opened, the second flow-through port is closed, and the medium passes through the outlet flow channel. When the temperature in the temperature measuring flow channel does not meet the set requirements, the electric actuator drives the valve flap to rise through the valve stem, so that the valve flap abuts against the first valve seat ring, the first flow-through port is closed, the second flow-through port is opened, and the medium passes through the return channel. Among them, since both the first valve seat ring and the second valve seat ring are detachable, when any valve seat ring has scratches and wear due to fluid erosion, resulting in poor sealing performance, the valve seat ring can be directly replaced without replacing the entire valve body, which greatly reduces the later maintenance cost.

[0036] As shown in the attached Figure 1 and attached Figure 2 As shown, the first valve seat ring is threadedly connected to the first flow-through port, and a first limiting flange extending outward is provided at the upper end of the first valve seat ring. A first groove is provided at the position corresponding to the upper end of the first flow-through port on the inner wall of the valve body, and the first limiting flange abuts against the inner end of the first groove; the second valve seat ring is threadedly connected to the second flow-through port, and a second limiting flange extending outward is provided at the lower end of the second valve seat ring. A second groove is provided at the position corresponding to the lower end of the second flow-through port on the inner wall of the valve body, and the second limiting flange abuts against the inner end of the second groove. The first valve seat ring and the second valve seat ring are installed on their respective corresponding flow-through ports by means of threaded fit, and the disassembly and assembly are very convenient.

[0037] As attached Figure 2 As shown, a first sealing gasket is sandwiched between the first limiting flange and the inner end of the first groove, and a second sealing gasket is sandwiched between the second limiting flange and the inner end of the second groove. This design can improve the sealing performance of the first valve seat ring and the second valve seat ring after installation.

[0038] As attached Figure 2 As shown, the upper end of the first valve seat ring has a plurality of first operating grooves distributed in a circumferential array, and the lower end of the second valve seat ring has a plurality of second operating grooves distributed in a circumferential array. The operating grooves can provide a fulcrum to facilitate the rotation operation of the first valve seat ring and the second valve seat ring, thereby making it easier to disassemble and assemble.

[0039] As attached Figure 2 As shown, the first valve seat ring has a first annular groove with a C-shaped cross-sectional profile at the lower end, a first sealing ring is embedded in the first annular groove, and the lower end of the first sealing ring is exposed outside the first annular groove; the second valve seat ring has a second annular groove with a C-shaped cross-sectional profile at the upper end, a second sealing ring is embedded in the second annular groove, and the upper end of the second sealing ring is exposed outside the second annular groove. When the valve disc is pressed against the corresponding valve seat ring, it has a hard and soft double sealing effect, which can further improve the sealing performance of the corresponding flow port when it is closed. In addition, the C-shaped cross-sectional profile design of the first annular groove and the second annular groove also makes it difficult for the first sealing ring and the second sealing ring to come out.

[0040] As attached Figure 1 As shown, the regulating valve module also includes a guide sleeve, which is sleeved on the outer periphery of the valve stem, and a support flange is provided on the outer periphery of the guide sleeve. The valve cover is connected to the upper end of the valve body by screws, and the support flange is clamped between the valve cover and the valve body. The support flange is also provided with pressure-stabilizing holes that penetrate up and down in a circular array. The provision of the guide sleeve can improve the stability of the up and down movement of the valve stem.

[0041] As attached Figure 1 and attached Figure 3 As shown, the valve stem includes an upper connecting rod, a connecting column, a lower connecting rod, an upper hexagon socket stud and a lower hexagon socket stud. An upper slot and a lower slot are respectively provided at the upper and lower ends of the connecting column. The upper connecting rod and the lower connecting rod are respectively inserted into the upper slot and the lower slot. A first through hole connected to the upper slot and a second through hole connected to the lower slot are radially opened on the side of the connecting column. A first screw hole corresponding to the first through hole is provided on the side of the upper connecting rod. A second screw hole corresponding to the second through hole is provided on the lower connecting rod. The upper hexagon socket stud passes through the first through hole and its inner end is screwed into the first screw hole. The lower hexagon socket stud passes through the second through hole and its inner end is screwed into the second through hole. The valve stem adopts a segmented splicable structure, which is more conducive to the processing and production of the valve stem.

[0042] As shown in the appendix Figure 1 As shown, a dust cover is installed at the upper end of the front valve body. The dust cover surrounds the temperature sensor, and the controller is arranged at the upper end of the dust cover. The dust cover can protect the temperature sensor from dust and water, thus extending its service life.

[0043] In addition, anti-corrosion coatings are applied on the surfaces of both the front valve body and the rear valve body, which can be epoxy resin coatings or polyurea coatings. This design can protect the front valve body and the rear valve body, achieving the effects of anti-corrosion and rust prevention, thereby preventing the generation of cracks on the valve body surface and extending its service life.

Claims

1. Anti-crack temperature-controlled shunt regulating valve, comprising a temperature control module and a regulating valve module; characterized in that: The temperature control module includes a front valve body, a controller and a temperature sensor. A temperature measuring flow channel is provided in the rear valve body. The temperature sensor is disposed through the valve body, and the temperature measuring probe of the temperature sensor extends into the temperature measuring flow channel. The output end of the temperature sensor is electrically connected to the input end of the controller through a wire; The regulating valve module includes a rear valve body, a valve cover, a valve stem and a valve flap. An inlet flow channel, an outlet flow channel and a return flow channel are provided in the rear valve body. A first flow-through port is provided between the inlet flow channel and the outlet flow channel, and a second flow-through port is provided between the inlet flow channel and the return flow channel. A first valve seat ring and a second valve seat ring are detachably installed on the first flow-through port and the second flow-through port respectively; the valve cover is installed on the upper part of the valve body, a bracket is installed on the valve cover, and an electric actuator is provided on the bracket. The input end of the electric actuator is electrically connected to the output end of the controller through a wire. The valve stem penetrates through the valve cover, and the outer end of the valve stem is linked to the output end of the electric actuator. The valve flap is disposed at the inner end of the valve stem. When the valve flap abuts against the first valve seat ring, the first flow-through port is closed and the second flow-through port is opened. When the valve flap abuts against the second valve seat ring, the first flow-through port is opened and the second flow-through port is closed; The front valve body and the rear valve body are detachably connected together so that the temperature measuring flow channel is communicated with the inlet flow channel.

2. The anti-crack temperature-controlled flow-dividing regulating valve according to claim 1, wherein: The first valve seat ring is threadedly connected to the first flow-through port, and a first limiting flange extending outward in the circumferential direction is provided at the upper end of the first valve seat ring. A first groove is provided at the position corresponding to the upper end of the first flow-through port on the inner wall of the valve body. The first limiting flange abuts against the inner end of the first groove; the second valve seat ring is threadedly connected to the second flow-through port, and a second limiting flange extending outward in the circumferential direction is provided at the lower end of the second valve seat ring. A second groove is provided at the position corresponding to the lower end of the second flow-through port on the inner wall of the valve body. The second limiting flange abuts against the inner end of the second groove.

3. The temperature-controlled flow dividing and regulating valve for crack prevention according to claim 2, characterized in that: A first sealing gasket is clamped between the first limiting flange and the inner end of the first groove, and a second sealing gasket is clamped between the second limiting flange and the inner end of the second groove.

4. The temperature-controlled flow-dividing regulating valve for preventing cracks according to claim 2, wherein: A plurality of first operation grooves are distributed in a circumferential array at the upper end of the first valve seat ring, and a plurality of second operation grooves are distributed in a circumferential array at the lower end of the second valve seat ring.

5. The anti-crack temperature-controlled flow-dividing regulating valve according to claim 2, characterized in that: A first annular groove with a C-shaped cross-sectional profile is provided at the lower end of the first valve seat ring, and a first sealing ring is embedded in the first annular groove. The lower part of the first sealing ring protrudes out of the first annular groove; a second annular groove with a C-shaped cross-sectional profile is provided at the upper end of the second valve seat ring, and a second sealing ring is embedded in the second annular groove. The upper part of the second sealing ring protrudes out of the second annular groove.

6. The anti-crack temperature-controlled flow dividing regulating valve according to claim 1, wherein: The regulating valve module further includes a guide sleeve sleeved on the outer periphery of the valve stem. A support flange is provided on the outer periphery of the guide sleeve. The support flange is clamped between the valve cover and the valve body, and a plurality of pressure stabilizing holes penetrating up and down are also distributed in a circumferential array on the support flange.

7. The anti-crack temperature-controlled flow-dividing regulating valve according to claim 6, characterized in that: The valve stem includes an upper connecting rod, a connecting column, a lower connecting rod, an upper internal hexagonal stud and a lower internal hexagonal stud. An upper slot and a lower slot are respectively provided at the upper and lower ends of the connecting column. The upper connecting rod and the lower connecting rod are respectively inserted into the upper slot and the lower slot. A first through hole communicating with the upper slot and a second through hole communicating with the lower slot are radially formed in the side of the connecting column. A first screw hole corresponding to the first through hole is provided in the side of the upper connecting rod. A second screw hole corresponding to the second through hole is provided on the lower connecting rod. The upper internal hexagonal stud passes through the first through hole and its inner end is screwed into the first screw hole. The lower internal hexagonal stud passes through the second through hole and its inner end is screwed into the second through hole.

8. The anti-crack temperature-controlled shunt regulating valve according to claim 1, wherein: A dust cover is installed at the upper end of the front valve body. The dust cover surrounds the temperature sensor. The controller is arranged at the upper end of the dust cover.

9. The temperature-controlled flow-dividing regulating valve for preventing cracks according to claim 1, characterized in that: Anticorrosive coatings are applied on the surfaces of both the front valve body and the rear valve body.

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