Pneumatic anti-explosion adjusting butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, and provides a pneumatic anti-explosion adjusting butterfly valve which comprises a valve body. The rotating baffle is rotationally arranged on the valve body; and the pneumatic actuator is arranged on the rotating baffle and drives the rotating baffle to rotate. By means of the technical scheme, the problems that in the prior art, an electric adjusting butterfly valve is high in price and high in operation cost are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, and in particular to a pneumatic explosion-proof regulating butterfly valve. Background Art

[0002] In the steel smelting industry, the control of the combustion gas flow of blast furnace hot blast furnaces and power boilers usually relies on the key equipment of electric regulating butterfly valves. This valve is located in the gas area, and the safety requirements of its electric actuator are particularly stringent. It must have explosion-proof characteristics to ensure stable operation in extreme environments and avoid any risk of triggering an explosion. Since such valves need to be switched on and off and adjusted frequently and continuously during the production process, high requirements are placed on the performance of their electric actuators. Utility Model Content

[0003] The utility model provides a pneumatic explosion-proof regulating butterfly valve, which solves the problems of high price and high operating cost of electric regulating butterfly valves in the related technology.

[0004] The technical solution of the utility model is as follows:

[0005] A pneumatic explosion-proof regulating butterfly valve, comprising:

[0006] Valve body;

[0007] A rotating baffle, rotatably disposed on the valve body;

[0008] The pneumatic actuator is arranged on the rotating baffle, and the pneumatic actuator drives the rotating baffle to rotate.

[0009] Optionally, the rotating baffle comprises:

[0010] A valve stem is rotatably arranged on the valve body, and the pneumatic actuator is arranged on the valve stem;

[0011] The valve plate is arranged on the valve stem, and when the valve stem rotates, the valve plate is driven to rotate.

[0012] Optionally, it also includes:

[0013] A positioner is arranged on the pneumatic actuator, and the positioner is used to control the amount of air entering the pneumatic actuator.

[0014] Optionally, the pneumatic actuator has an air inlet and further comprises:

[0015] A bracket, on which the valve body is arranged;

[0016] A position-keeping valve, arranged on the bracket, and used for locking the valve plate;

[0017] A filter pressure reducing valve is arranged on the bracket and has an air outlet, the air outlet is communicated with the air inlet, and the filter pressure reducing valve is used to filter compressed air;

[0018] A pipeline, one end of which is connected to the positioner, and the other end of which is connected to the position-keeping valve, the filter pressure-reducing valve and the pneumatic actuator.

[0019] Optionally, the valve stem is rotatably arranged on the valve body along a vertical direction, and further comprises:

[0020] A first manual lever is slidably disposed on the bracket in a vertical direction and rotatably disposed on the valve body in a horizontal direction;

[0021] A first gear, disposed on the valve stem;

[0022] a second gear, arranged on the first manual rod, wherein after the first manual rod slides, the first gear and the second gear are meshed;

[0023] A handle is arranged on the first manual rod, and the handle is used to drive the first manual rod to slide.

[0024] Optionally, it also includes:

[0025] A rotating block, rotatably disposed on the bracket, and used to lift up the first manual rod after the rotating block rotates to prevent the first manual rod from sliding down;

[0026] An elastic member, one end of which is arranged on the rotating block, and the other end of which is arranged on the bracket, and the elastic member is used to provide a force for lifting the rotating block.

[0027] Optionally, it also includes:

[0028] A second manual lever, slidably disposed on the bracket;

[0029] The third gear is arranged on the second manual rod, and the second manual rod slides to drive the third gear to mesh with the first gear.

[0030] Optionally, it also includes:

[0031] A sealing member is arranged on the valve body, and the valve plate abuts against the sealing member after rotating;

[0032] A sealing protrusion is arranged on the sealing member, and a deformation space is provided between the sealing protrusion and the sealing member. After the valve body rotates, the sealing protrusion is used to abut against the sealing protrusion, and after the abutment, the deformation space is squeezed.

[0033] The working principle and beneficial effects of the utility model are:

[0034] In the utility model, in order to solve the problems of high price and high operating cost of the electric regulating butterfly valve in the related art, the main part of the pneumatic explosion-proof regulating butterfly valve in this scheme is the valve body. The valve body is made of high-strength and corrosion-resistant materials, and the internal channel design is smooth to reduce flow resistance and prevent medium deposition. At the same time, it has good explosion-proof performance and can be applied to flammable and explosive working conditions. Inside the valve body, a rotatable baffle is provided. The baffle is usually disc-shaped and connected to the valve body through a shaft pin or a bearing structure, so that the baffle can rotate 0° to 90° around the axis. The opening and closing degree of the baffle determines the flow area of ​​the valve, thereby realizing the regulation of the fluid flow. The pneumatic actuator is installed on the rotating baffle and is connected to the baffle through a mechanical connector. The pneumatic actuator receives the driving signal of the external air source, and converts the air pressure energy into mechanical energy through the reciprocating motion of components such as the piston or the diaphragm, thereby driving the rotating baffle to rotate. According to the size and direction of the air source pressure, the baffle can be opened and closed quickly and accurately, and the semi-open state can be adjusted to meet different control requirements for the fluid flow. In addition, the pneumatic explosion-proof regulating butterfly valve also has a complete explosion-proof design, such as the use of explosion-proof electric actuators, explosion-proof junction boxes, explosion-proof limit switches and other components, to ensure that in an inflammable and explosive environment, even if sparks or overheating occur, the surrounding environment will not be ignited, thereby ensuring the safety of the operation process. At the same time, the valve also has self-locking, limit and fault protection functions, which improves the stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0036] Figure 1 It is a schematic diagram of the structure of the utility model;

[0037] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0038] Figure 3 for Figure 2 A magnified schematic diagram of point A;

[0039] Figure 4 This is a schematic diagram of the valve body structure of the utility model;

[0040] Figure 5 for Figure 4 An enlarged schematic diagram of point B;

[0041] Figure 6 This is a schematic diagram of the structure of the rotating block of the utility model;

[0042] Figure 7 for Figure 6 An enlarged schematic diagram of point C;

[0043] In the figure: 100, valve body, 200, rotating baffle, 210, valve stem, 220, valve plate, 300, pneumatic actuator, 400, positioner, 310, air inlet, 500, bracket, 600, retaining valve, 700, filter pressure reducing valve, 710, air outlet, 800, pipeline, 900, first manual lever, 1000, first gear, 1100, second gear, 1200, handle, 1300, rotating block, 1400, elastic member, 1500, second manual lever, 1600, third gear, 1700, sealing member, 1800, sealing protrusion, 1810, deformation space. DETAILED DESCRIPTION

[0044] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, they can also be understood as further technical solutions without paying creative work. In some figures, components with the same structure or function are only schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0045] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a locking connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0046] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0047] Reference Figure 1 to Figure 7 , which is the first embodiment of the utility model, proposes

[0048] A pneumatic explosion-proof regulating butterfly valve, comprising:

[0049] Valve body 100;

[0050] A rotating baffle 200 is rotatably disposed on the valve body 100;

[0051] The pneumatic actuator 300 is disposed on the rotating baffle 200 , and the pneumatic actuator 300 drives the rotating baffle 200 to rotate.

[0052] In this embodiment, in order to solve the problems of high price and high operating cost of the electric regulating butterfly valve in the related art, the main part of the pneumatic explosion-proof regulating butterfly valve in this scheme is the valve body 100. The valve body 100 is made of high-strength and corrosion-resistant materials, and the internal channel design is smooth to reduce flow resistance and prevent medium deposition. At the same time, it has good explosion-proof performance and can be applied to flammable and explosive working conditions. Inside the valve body 100, a rotatable baffle is provided. The baffle is usually disc-shaped and connected to the valve body 100 through a shaft pin or a bearing structure, so that the baffle can rotate 0° to 90° around the axis. The opening and closing degree of the baffle determines the flow area of ​​the valve, thereby realizing the regulation of the fluid flow. The pneumatic actuator 300 is installed on the rotating baffle 200 and is connected to the baffle through a mechanical connector. The pneumatic actuator 300 receives a driving signal from an external air source, and converts air pressure energy into mechanical energy through the reciprocating motion of components such as a piston or a diaphragm, thereby driving the rotating baffle 200 to rotate. According to the size and direction of the air source pressure, the baffle can be opened and closed quickly and accurately, and the half-open state can be adjusted to meet different control requirements for fluid flow. In addition, the pneumatic explosion-proof regulating butterfly valve also has a complete explosion-proof design, such as the use of explosion-proof electric actuators, explosion-proof junction boxes, explosion-proof limit switches and other components to ensure that in flammable and explosive environments, even if sparks or overheating occur, the surrounding environment will not be ignited, thereby ensuring the safety of the operation process. At the same time, the valve also has self-locking, limit and fault protection functions, which improve the stability and reliability of the system.

[0053] Further, the rotating baffle 200 includes:

[0054] The valve stem 210 is rotatably disposed on the valve body 100, and the pneumatic actuator 300 is disposed on the valve stem 210;

[0055] The valve plate 220 is disposed on the valve stem 210 . When the valve stem 210 rotates, the valve plate 220 is driven to rotate.

[0056] In this embodiment, the valve stem 210 is a core component connecting the pneumatic actuator 300 and the valve plate 220, and is rotatably arranged inside the valve body 100 through a bearing or a sleeve structure to ensure that the valve stem 210 can rotate smoothly on the valve body 100. The pneumatic actuator 300 is directly mounted on the top of the valve stem 210, and the air pressure energy is converted into mechanical rotational force through the mechanical transmission structure inside the actuator. The valve plate 220 is locked on the valve stem 210, forming an integral rotating unit with the valve stem 210. The valve plate 220 is usually designed as a circular or elliptical thin plate to reduce flow resistance and adapt to a larger flow adjustment range. When the pneumatic actuator 300 receives a control signal and drives the valve stem 210 to rotate, the valve plate 220 will rotate synchronously with the valve stem 210, and the precise adjustment of the fluid flow rate is achieved by changing the opening size between the valve plate 220 and the flow channel of the valve body 100. In addition, in order to ensure explosion-proof performance, explosion-proof sealing measures are taken at the connection between the valve stem 210 and the valve plate 220, as well as at the connection between the valve body 100 and the pneumatic actuator 300, to prevent sparks or explosive gases from entering the dangerous area. At the same time, the material selection and surface treatment process of the valve plate 220 also fully consider the requirements of corrosion resistance and wear resistance, ensuring that the valve can still maintain long-term stable working performance under flammable and explosive conditions.

[0057] Furthermore, it also includes:

[0058] The positioner 400 is disposed on the pneumatic actuator 300 , and is used to control the amount of air entering the pneumatic actuator 300 .

[0059] In this embodiment, the positioner 400 is installed on the pneumatic actuator 300 and is a precise pneumatic control device. Its main function is to accurately control the amount of gas entering the pneumatic actuator 300 according to the input control signal. The positioner 400 is usually controlled by a pneumatic signal, which can achieve accurate adjustment and positioning of the valve opening. During the specific operation, the positioner 400 receives a control signal from a control system (such as PLC, DCS, etc.), and the signal value corresponds to the desired opening position of the valve. The positioner 400 calculates the corresponding cylinder piston stroke according to the signal value, and controls the amount of gas entering the actuator by adjusting the opening of the air inlet 310 and the exhaust port entering the pneumatic actuator 300, thereby driving the valve stem 210 and the valve plate 220 to rotate to the corresponding opening position. By adding the positioner 400, the control accuracy and response speed of the pneumatic explosion-proof regulating butterfly valve have been significantly improved, which can achieve more accurate flow control and automated process flow control, and at the same time, it also ensures the safe and stable operation of the valve in a flammable and explosive environment.

[0060] Furthermore, the pneumatic actuator 300 has an air inlet 310 and further includes:

[0061] A bracket 500, on which the valve body 100 is disposed;

[0062] A retaining valve 600 is provided on the bracket 500 and is used to lock the valve plate 220;

[0063] The filter pressure reducing valve 700 is disposed on the bracket 500 and has an air outlet 710, the air outlet 710 is communicated with the air inlet 310, and the filter pressure reducing valve 700 is used to filter the compressed air;

[0064] The pipeline 800 has one end connected to the positioner 400 , and the other end connected to the position-keeping valve 600 , the filter pressure-reducing valve 700 and the pneumatic actuator 300 .

[0065] In this embodiment, the bracket 500 is used as a basic support structure to lock the valve body 100 and ensure that the valve body 100 remains stable during operation. The valve body 100 is installed on the bracket 500 by an appropriate connection method. The position-keeping valve 600 is arranged on the bracket 500. Its main function is to keep the valve plate 220 in place in the event of loss of air source or sudden situation, prevent the valve from accidentally closing or opening, and ensure the safety of the process flow. The position-keeping valve 600 is connected to the valve plate 220 through the pipeline 800, thereby locking the position of the valve plate 220. The filter pressure reducing valve 700 is also installed on the bracket 500, which has an air outlet 710, and the air outlet 710 is connected to the air inlet 310 of the pneumatic actuator 300 through the pipeline 800. The main function of the filter pressure reducing valve 700 is to filter impurities and moisture in the compressed air entering the pneumatic actuator 300, and at the same time reduce the air pressure to the working pressure required by the actuator, thereby protecting the internal parts of the actuator from pollution and overpressure damage, and ensuring that the actuator works stably and reliably. The pipeline 800 system serves as a transmission carrier of the air circuit, with one end connected to the position-keeping valve 600, and the other end connected in series with the positioner 400, the filter pressure-reducing valve 700, and the air inlet 310 of the pneumatic actuator 300. In this way, after the compressed air is processed by the filter pressure-reducing valve 700, it is distributed to the position-keeping valve 600 and the pneumatic actuator 300 through the pipeline 800 system, thereby realizing the drive control and position-keeping functions of the valve plate 220. In summary, the pneumatic explosion-proof regulating butterfly valve in this embodiment integrates the bracket 500, the position-keeping valve 600, the filter pressure-reducing valve 700, and the pipeline 800 system, which not only ensures the precise adjustment and position-keeping of the valve during the pneumatic control process, but also improves the stability and safety of the system operation, especially in special environments such as flammable and explosive environments, and can effectively prevent potential safety hazards caused by air source problems.

[0066] Further, the valve stem 210 is rotatably arranged on the valve body 100 along the vertical direction, and further comprises:

[0067] A first manual lever 900 is slidably disposed on the bracket 500 in a vertical direction and is rotatably disposed on the valve body 100 in a horizontal direction;

[0068] A first gear 1000 is disposed on the valve stem 210;

[0069] The second gear 1100 is disposed on the first manual lever 900. After the first manual lever 900 slides, the first gear 1000 and the second gear 1100 are meshed;

[0070] The handle 1200 is disposed on the first manual rod 900 , and the handle 1200 is used to drive the first manual rod 900 to slide.

[0071] In this embodiment, the valve stem 210 is rotatably arranged on the valve body 100 in the vertical direction and connected to the valve plate 220. The valve plate 220 is driven to rotate by the pneumatic actuator 300 or the manual control device to realize the opening, closing and adjustment of the valve. The first manual lever 900 is slidably arranged on the bracket 500 in the vertical direction and is rotatably arranged on the valve body 100 in the horizontal direction. The manual operating force is transmitted to the valve stem 210 by combining sliding and rotating. A first gear 1000 is arranged on the valve stem 210, and a second gear 1100 is arranged on the first manual lever 900. When the first manual lever 900 slides in the vertical direction on the bracket 500, the second gear 1100 and the first gear 1000 are meshed with each other. Through the gear transmission effect, the valve stem 210 rotates following the sliding of the first manual lever 900, thereby driving the valve plate 220 to rotate, thereby realizing manual control of the valve opening. The handle 1200 is mounted on the first manual rod 900. The operator can control the sliding and rotation of the first manual rod 900 by holding and pushing the handle 1200. This design enables the valve to be opened, closed and adjusted through the handle 1200 when there is no air supply or emergency manual operation is required. The pneumatic explosion-proof regulating butterfly valve in this embodiment not only retains the original pneumatic control function by adding a manual control device, but also adds a manual operation mode, thereby improving the adaptability and reliability of the valve under various working conditions.

[0072] Furthermore, it also includes:

[0073] A rotating block 1300 is rotatably disposed on the bracket 500. After the rotating block 1300 rotates, it is used to lift up the first manual rod 900 to prevent the first manual rod 900 from sliding down;

[0074] The elastic member 1400 has one end disposed on the rotating block 1300 and the other end disposed on the bracket 500 . The elastic member 1400 is used to provide a force for lifting the rotating block 1300 .

[0075] In this embodiment, in order to ensure that the first manual rod 900 will not fall accidentally after sliding up, this solution designs a rotating block 1300, and the elastic member 1400 can be, but is not limited to, a torsion spring. Through the reset of the torsion spring, the rotating block 1300 supports the first manual rod 900. When the first manual rod 900 slides down, the rotating block 1300 is forced to rotate. After the first manual rod 900 drops a certain distance, the rotating block 1300 no longer rotates, supporting the first manual rod 900. At the same time, the first manual rod 900 is locked and will not move at will. The first gear 1000 and the second gear 1100 are meshed, and the first manual rod 900 drives the second gear 1100 to rotate, and the second gear 1100 drives the first gear 1000 to rotate. When the first manual rod 900 slides up, the rotating block 1300 resets to support the first manual rod 900.

[0076] Furthermore, it also includes:

[0077] A second manual lever 1500 is slidably disposed on the bracket 500;

[0078] The third gear 1600 is disposed on the second manual lever 1500 . After the second manual lever 1500 slides, the third gear 1600 is driven to mesh with the first gear 1000 .

[0079] In this embodiment, since it is relatively difficult to manually rotate the handle 1200 when the butterfly valve is relatively large, this solution can design a driving component at the second manual rod 1500. After the pneumatic actuator 300 is accidentally damaged, the driving component can be used to drive the second manual rod 1500 to rotate. Of course, a handle 1200 can also be designed on the second manual rod 1500, and both sides can be rotated together to ensure that the butterfly valve can be used normally after the pneumatic actuator 300 is damaged.

[0080] Furthermore, it also includes:

[0081] The sealing member 1700 is disposed on the valve body 100, and the valve plate 220 abuts against the sealing member 1700 after rotating;

[0082] The sealing protrusion 1800 is disposed on the sealing member 1700 . The sealing protrusion 1800 and the sealing member 1700 have a deformation space 1810 . After the valve body 100 rotates, it is used to abut against the sealing protrusion 1800 . After the abutment, the deformation space 1810 is squeezed.

[0083] In this embodiment, the seal 1700 is arranged on the inner side of the valve body 100 opposite to the valve plate 220. When the valve plate 220 rotates under the drive of the pneumatic actuator 300 or the manual control device, the valve plate 220 will be in close contact with the seal 1700, thereby forming a seal to prevent leakage of the medium. A sealing protrusion 1800 structure is specially designed on the seal 1700, and a certain deformation space 1810 is left between the sealing protrusion 1800 and the main body of the seal 1700. When the valve body 100 rotates as required to drive the valve plate 220 to contact the seal 1700, the edge of the valve plate 220 will abut against the sealing protrusion 1800. As the valve plate 220 further rotates and presses the sealing protrusion 1800, the deformation space 1810 will be gradually squeezed, and the sealing protrusion 1800 will be appropriately deformed, thereby increasing the contact area and sealing pressure with the valve plate 220, and further enhancing the sealing effect of the valve. Through such a design, the valve can maintain good sealing performance in any working state, effectively prevent medium leakage, and improve the overall efficiency and safety of the valve. At the same time, the materials used for the seal 1700 and the sealing protrusion 1800 are special materials that are wear-resistant, corrosion-resistant and high-temperature resistant to meet the strict requirements on valve sealing performance under different working conditions.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pneumatic explosion-proof regulating butterfly valve, characterized in that: include: Valve body (100); A rotating baffle (200) rotatably disposed on the valve body (100); The pneumatic actuator (300) is arranged on the rotating baffle (200), and the pneumatic actuator (300) drives the rotating baffle (200) to rotate.

2. A pneumatic explosion-proof regulating butterfly valve according to claim 1, characterized in that: The rotating baffle (200) comprises: A valve stem (210) is rotatably disposed on the valve body (100), and the pneumatic actuator (300) is disposed on the valve stem (210); The valve plate (220) is arranged on the valve stem (210), and when the valve stem (210) rotates, the valve plate (220) is driven to rotate.

3. A pneumatic explosion-proof regulating butterfly valve according to claim 2, characterized in that: Also includes: A positioner (400) is arranged on the pneumatic actuator (300), and the positioner (400) is used to control the amount of air entering the pneumatic actuator (300).

4. A pneumatic explosion-proof regulating butterfly valve according to claim 3, characterized in that: The pneumatic actuator (300) has an air inlet (310) and further comprises: A bracket (500), the valve body (100) being arranged on the bracket (500); A position-keeping valve (600) is arranged on the bracket (500), and the position-keeping valve (600) is used to lock the valve plate (220); a filter pressure reducing valve (700), arranged on the bracket (500) and having an air outlet (710), wherein the air outlet (710) is in communication with the air inlet (310), and the filter pressure reducing valve (700) is used to filter compressed air; A pipeline (800) has one end connected to the positioner (400) and the other end connected to the position-keeping valve (600), the filter pressure-reducing valve (700) and the pneumatic actuator (300).

5. The pneumatic explosion-proof regulating butterfly valve according to claim 4, characterized in that: The valve stem (210) is rotatably arranged on the valve body (100) along a vertical direction, and further comprises: A first manual lever (900) is slidably disposed on the bracket (500) in a vertical direction and is rotatably disposed on the valve body (100) in a horizontal direction; A first gear (1000) is arranged on the valve stem (210); a second gear (1100) disposed on the first manual rod (900), wherein after the first manual rod (900) slides, the first gear (1000) and the second gear (1100) mesh; A handle (1200) is arranged on the first manual rod (900), and the handle (1200) is used to drive the first manual rod (900) to slide.

6. A pneumatic explosion-proof regulating butterfly valve according to claim 5, characterized in that: Also includes: a rotating block (1300) rotatably disposed on the bracket (500); the rotating block (1300) is used to lift up the first manual rod (900) after rotation, thereby preventing the first manual rod (900) from sliding down; An elastic member (1400) has one end disposed on the rotating block (1300) and the other end disposed on the bracket (500), and the elastic member (1400) is used to provide a force for lifting the rotating block (1300).

7. The pneumatic explosion-proof regulating butterfly valve according to claim 5, characterized in that: Also includes: A second manual lever (1500) slidably disposed on the bracket (500); The third gear (1600) is arranged on the second manual rod (1500), and the second manual rod (1500) drives the third gear (1600) to mesh with the first gear (1000) after sliding.

8. The pneumatic explosion-proof regulating butterfly valve according to claim 2, characterized in that: Also includes: A sealing member (1700) is arranged on the valve body (100), and the valve plate (220) abuts against the sealing member (1700) after rotating; The sealing protrusion (1800) is arranged on the sealing member (1700), and the sealing protrusion (1800) and the sealing member (1700) have a deformation space (1810). After the valve body (100) is rotated, it is used to abut against the sealing protrusion (1800), and after the abutment, the deformation space (1810) is squeezed.

Images