Pressure regulating valve

Abstract

The utility model relates to the technical field of pressure regulating valves, and discloses a pressure regulating valve which comprises a valve body, an executing mechanism and a valve cover, a sealing disc is placed at the top end of the valve body, the valve cover is installed at the top end of the sealing disc, and the executing mechanism is installed at the top end of the valve cover. The executing mechanism comprises an executing box, a valve element, a gear, a rack, a piston and a connecting pipe, the executing box is installed at the top end of the valve deck, and the piston is arranged in the executing box in a sliding mode. According to the ball valve, when the pressure of the water inlet end of the valve body is too large, water enters the execution box through the connecting pipe, the rack is pushed to move by compressing the piston, the rack is meshed with the gear, and the bottom end of the gear is clamped with the valve element, so that the valve element and the ball valve integrated with the valve element are controlled to rotate, and the water is cut off; the sealing performance of the control valve can be improved by designing the valve element into the ball valve, and compared with a cylinder, the ball valve is small in telescopic friction and abrasion and longer in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure regulating valves, in particular to a pressure regulating valve. Background Art

[0002] Pressure regulating valves are mainly used to control the fluid pressure in the flow system. For example, they are used in refrigeration systems for freezing and refrigeration and variable frequency multi-unit units. When the pressure on the compressor outlet side rises to the set pressure of the pressure regulating valve, the pressure regulating valve opens to reduce the pressure of the fluid discharged from the compressor, thereby protecting the compressor from operating within a reliable operating range and increasing the service life of the compressor and heat pump system.

[0003] Most traditional pressure regulating valves achieve sealing by telescoping the cylinder, but the sealing effect of telescoping the cylinder is poor, and the cylinder is easily worn, which greatly reduces the service life of the control valve.

[0004] Therefore, those skilled in the art provide a pressure regulating valve to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a pressure regulating valve is proposed. When the pressure at the water inlet end of the valve body is too high, the water enters the execution box through the connecting pipe, and the rack is pushed to move by the compression piston. Since the rack is engaged with the gear, and the bottom end of the gear is clamped with the valve core, the valve core and the ball valve integrated with the valve core are controlled to rotate to achieve water cut-off. By designing the valve core as a ball valve, the sealing performance of the control valve can be improved, and the ball valve has less friction and wear than the column expansion and contraction, and has a longer service life.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A pressure regulating valve comprises a valve body, an actuator and a valve cover, wherein a sealing disk is placed on the top of the valve body, the valve cover is mounted on the top of the sealing disk, and the actuator is mounted on the top of the valve cover;

[0008] The actuator includes an actuator box, a valve core, a gear, a rack, a piston and a connecting pipe. The actuator box is installed on the top of the valve cover, the piston is slidably arranged inside the actuator box, the top of the actuator box is detachably installed with a box cover, the gear is rotatably installed at the middle of the bottom end of the box cover, the rack is fixedly connected to one end of the piston, the rack and the gear are meshed, the valve core is inserted at the bottom end of the gear, the bottom end of the valve core is fixedly provided with a ball valve, the outer end of the ball valve is sleeved with a matching ball, and the top end of the valve body is connected to the bottom end of the actuator box with a connecting pipe;

[0009] Through the above technical solution, when the pressure at the water inlet end of the valve body is too high, the water enters the execution box through the connecting pipe, and the rack is pushed to move by the compression piston. Since the rack is engaged with the gear, and the bottom end of the gear is engaged with the valve core, the valve core and the ball valve integrated with the valve core are controlled to rotate to achieve water cutoff. By designing the valve core into a ball valve, the sealing performance of the control valve can be improved, and the ball valve has less friction and wear than the cylindrical expansion and contraction, and has a longer service life.

[0010] Furthermore, a valve seat is installed at the bottom end of the valve body, the top end of the valve seat is in contact with the outer surface of the matching ball, a clamping groove is provided in the middle of the top end of the valve seat, and a clamping block is integrally provided at the bottom end of the matching ball;

[0011] Through the above technical solution, a valve seat is installed at the bottom end of the valve body, and the top end of the valve seat is fitted with the outer surface of the mating ball. A slot is provided in the middle of the top end of the valve seat, and a clamping block is integrally provided at the bottom end of the mating ball. The clamping block and the slot are fixed to prevent the mating ball from rotating.

[0012] Furthermore, the valve seat and the four corners of the bottom end of the valve body are connected with connecting bolts, and the four connecting bolts are used in conjunction with nuts;

[0013] Through the above technical solution, connecting bolts are provided at the four corners of the bottom ends of the valve seat and the valve body, and the four connecting bolts are used in conjunction with nuts to facilitate fixing the valve seat and the valve body.

[0014] Furthermore, the box cover is installed above the valve core, and mounting bolts are installed at the four corners of the connection between the box cover and the actuator box;

[0015] Through the above technical solution, the box cover is installed above the valve core, and mounting bolts are installed at the four corners of the connection between the box cover and the execution box to facilitate maintenance of the gears and racks inside the execution box.

[0016] Furthermore, sealing rings are installed at both ends of the outer surface of the ball valve, and the outer surface of the ball valve fits with the inner surface of the matching ball;

[0017] Through the above technical solution, sealing rings are installed at both ends of the outer surface of the ball valve, thereby improving the sealing between the ball valve and the matching ball, and the outer surface of the ball valve fits the inner surface of the matching ball.

[0018] Furthermore, one end of the rack is slidably engaged with the execution box;

[0019] Through the above technical solution, a sliding engagement is performed between one end of the rack and the execution box, thereby ensuring the stability of the rack when it moves.

[0020] The utility model has the following beneficial effects:

[0021] 1. The utility model proposes a pressure regulating valve. When the pressure at the water inlet end of the valve body is too high, water enters the execution box through the connecting pipe, and the rack is pushed to move by the compression piston. Since the rack is engaged with the gear, and the bottom end of the gear is engaged with the valve core, the valve core and the ball valve integrated with the valve core are controlled to rotate to achieve water cutoff. By designing the valve core into a ball valve, the sealing performance of the control valve can be improved. In addition, compared with the cylindrical expansion and contraction, the ball valve has less friction and wear and a longer service life.

[0022] 2. The utility model proposes a pressure regulating valve, which is convenient for repairing the gears and racks inside the actuator box by designing a detachable box cover on the top of the actuator box, and the gears and the valve core are designed to be snap-fitted, and the valve seat is also designed to be detachable, so as to facilitate the later repair and replacement of the damaged valve core part, thereby reducing the use and maintenance cost of the control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an axonometric diagram of a pressure regulating valve proposed in the utility model;

[0024] Figure 2 This is a top sectional view of a pressure regulating valve proposed by the present utility model;

[0025] Figure 3 This is a side sectional view of a pressure regulating valve proposed by the utility model;

[0026] Figure 4 This is an internal axonometric diagram of a pressure regulating valve proposed in the present utility model;

[0027] Figure 5 This is an axonometric view of a valve seat of a pressure regulating valve proposed in the present utility model;

[0028] Figure 6 The utility model provides an axonometric view of a valve core of a pressure regulating valve.

[0029] Legend:

[0030] 1. Valve body; 2. Actuator; 201. Actuator box; 202. Valve core; 203. Piston; 204. Gear; 205. Rack; 206. Ball valve; 207. Connecting pipe; 208. Matching ball; 209. Box cover; 210. Sealing ring; 3. Valve seat; 4. Connecting bolts; 5. Block; 6. Slot; 7. Sealing disk; 8. Valve cover; 9. Mounting bolts. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0032] Reference Figure 1 、 Figure 2 、 Figure 4 、 Figure 6 The utility model provides an embodiment: a pressure regulating valve, comprising a valve body 1, an actuator 2 and a valve cover 8, a sealing disk 7 is placed on the top of the valve body 1, the valve cover 8 is installed on the top of the sealing disk 7, and the actuator 2 is installed on the top of the valve cover 8;

[0033] The actuator 2 includes an actuator box 201, a valve core 202, a gear 204, a rack 205, a piston 203 and a connecting pipe 207. The actuator box 201 is installed on the top of the valve cover 8. The piston 203 is slidably arranged inside the actuator box 201. The top of the actuator box 201 is detachably installed with a box cover 209. The gear 204 is rotatably installed at the middle of the bottom end of the box cover 209. The rack 205 is fixedly connected to one end of the piston 203. The rack 205 and the gear 204 are connected. The valve core 202 is meshed with each other, and the valve core 202 is inserted at the bottom end of the gear 204. The bottom end of the valve core 202 is fixed with a ball valve 206. The outer end of the ball valve 206 is sleeved with a matching ball 208. The top end of the valve body 1 is connected to the bottom end of the execution box 201 with a connecting pipe 207. Both ends of the outer surface of the ball valve 206 are installed with sealing rings 210. The outer surface of the ball valve 206 fits with the inner surface of the matching ball 208. One end of the rack 205 is connected to the execution box 201. The gear 204 is engaged with the rack 205, and the bottom end of the gear 204 is engaged with the valve core 202, thereby controlling the valve core 202 and the ball valve 206 integrated with the valve core 202 to rotate to cut off the water. By designing the valve core 202 as a ball valve 206, the sealing performance of the control valve can be improved. Compared with the expansion and contraction of the column, the ball valve 206 has less friction and wear and a longer service life. Sealing rings 210 are installed at both ends of the outer surface of the ball valve 206 to improve the sealing between the ball valve 206 and the mating ball 208. The outer surface of the ball valve 206 fits with the inner surface of the mating ball 208, and a sliding connection is performed between one end of the rack 205 and the actuator box 201 to ensure the stability of the rack 205 when it moves.

[0034] Reference Figure 1 、 Figure 3 、 Figure 5 , a valve seat 3 is installed at the bottom end of the valve body 1, and the top of the valve seat 3 fits with the outer surface of the matching ball 208. A card slot 6 is opened in the middle of the top of the valve seat 3, and a card block 5 is provided at the bottom end of the matching ball 208. The valve seat 3 and the four corners of the bottom end of the valve body 1 are connected with connecting bolts 4. The four connecting bolts 4 are used with nuts. The box cover 209 is installed above the valve core 202, and the four corners of the connection between the box cover 209 and the execution box 201 are equipped with mounting bolts 9. The valve seat 3 is installed at the bottom end of the valve body 1, and the top of the valve seat 3 fits with the outer surface of the matching ball 208. The top of the valve seat 3 A card slot 6 is provided in the middle of the end, and a card block 5 is integrally provided at the bottom end of the mating ball 208. The card block 5 is fixed with the card slot 6 to prevent the mating ball 208 from rotating. Connecting bolts 4 are provided at the four corners of the bottom end of the valve seat 3 and the valve body 1. The four connecting bolts 4 are used in conjunction with nuts to facilitate the fixation of the valve seat 3 and the valve body 1. The box cover 209 is installed above the valve core 202. The four corners of the connection between the box cover 209 and the execution box 201 are installed with mounting bolts 9 to facilitate the maintenance of the gear 204 and the rack 205 inside the execution box 201.

[0035] Working principle: When the water inlet pressure of the valve body 1 is too high, the water enters the execution box 201 through the connecting pipe 207, and the rack 205 is pushed to move by the compression piston 203. Since the rack 205 is meshed with the gear 204, and the bottom end of the gear 204 is clamped with the valve core 202, the valve core 202 and the ball valve 206 integrated with the valve core 202 are controlled to rotate to achieve water cutoff. By designing the valve core 202 as a ball valve 206, the sealing performance of the control valve can be improved, and the ball valve 206 has less friction and wear than the cylindrical expansion and contraction, and has a longer service life. By designing a detachable box cover 209 at the top of the execution box 201, it is convenient to repair the gear 204 and rack 205 inside the execution box 201, and the gear 204 and the valve core 202 are clamped, and the valve seat 3 is also detachable, which facilitates the later repair and replacement of the damaged valve core 202 part, reducing the use and maintenance cost of the control valve.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressure regulating valve, comprising a valve body (1), an actuator (2) and a valve cover (8), characterized in that: A sealing disk (7) is placed on the top of the valve body (1), the valve cover (8) is mounted on the top of the sealing disk (7), and the actuator (2) is mounted on the top of the valve cover (8); The actuator (2) comprises an actuator box (201), a valve core (202), a gear (204), a rack (205), a piston (203) and a connecting pipe (207); the actuator box (201) is mounted on the top of the valve cover (8); the piston (203) is slidably arranged inside the actuator box (201); a box cover (209) is detachably mounted on the top of the actuator box (201); the gear (204) is rotatably mounted on the middle of the bottom end of the box cover (209) The rack (205) is fixedly connected to one end of the piston (203), the rack (205) is meshed with the gear (204), the valve core (202) is inserted into the bottom end of the gear (204), a ball valve (206) is fixedly provided at the bottom end of the valve core (202), and a matching ball (208) is sleeved on the outer end of the ball valve (206), and a connecting pipe (207) is provided at the top end of the valve body (1) and the bottom end of the execution box (201).

2. A pressure regulating valve according to claim 1, characterized in that: A valve seat (3) is installed at the bottom end of the valve body (1), the top end of the valve seat (3) is in contact with the outer surface of the matching ball (208), a clamping groove (6) is provided in the middle of the top end of the valve seat (3), and a clamping block (5) is integrally provided at the bottom end of the matching ball (208).

3. A pressure regulating valve according to claim 2, characterized in that: The valve seat (3) and the four corners of the bottom end of the valve body (1) are connected with connecting bolts (4), and the four connecting bolts (4) are used in conjunction with nuts.

4. The pressure regulating valve according to claim 1, characterized in that: The box cover (209) is installed above the valve core (202), and mounting bolts (9) are installed at the four corners of the connection between the box cover (209) and the execution box (201).

5. The pressure regulating valve according to claim 1, characterized in that: Sealing rings (210) are installed at both ends of the outer surface of the ball valve (206), and the outer surface of the ball valve (206) fits with the inner surface of the matching ball (208).

6. The pressure regulating valve according to claim 1, characterized in that: One end of the rack (205) is slidably engaged with the execution box (201).

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